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Innovative application of low-odor responsive 9727 in electronic packaging field

2月 10th, 2025 News

Innovative application of low-odor responsive 9727 in the field of electronic packaging

Abstract

With the rapid development of electronic technology, the demand for electronic packaging materials is also growing. Traditional packaging materials have gradually exposed shortcomings in performance, environmental protection and reliability, so the development of new high-performance and low-odor packaging materials has become a research hotspot. This article focuses on the innovative application of low-odor responsive 9727 materials in the field of electronic packaging. Through detailed analysis of the chemical structure, physical properties, process characteristics and practical application cases of the material, its advantages in improving the reliability of electronic equipment and extending service life are demonstrated. The article also cites a large number of domestic and foreign literature, and combines experimental data and market feedback to comprehensively evaluate the application prospects and potential challenges of low-odor responsive 9727.

1. Introduction

Electronic packaging is the encapsulation of electronic components or chips in a protective housing to ensure that they operate properly under various environmental conditions. As electronic products become more and more integrated, the requirements for packaging materials are becoming increasingly stringent. Although traditional packaging materials such as epoxy resin, silicone, etc. have good mechanical strength and electrical insulation properties, they are prone to aging and cracking in high temperature and high humidity environments, resulting in a decrease in the reliability of electronic equipment. In addition, traditional materials will produce strong odors during the curing process, affecting the production environment and workers’ health. Therefore, developing a new packaging material with low odor and high performance has become an urgent need in the industry.

As a new type of electronic packaging material, the low-odor reactive 9727 material has attracted widespread attention due to its excellent comprehensive performance and environmental protection characteristics. This article will introduce the materials in detail from the aspects of chemical structure, physical properties, process characteristics, etc., and combine practical application cases to explore its innovative applications in the field of electronic packaging.

2. Chemical structure and synthesis principle of low-odor reaction type 9727

2.1 Chemical structure

The low odor reactive type 9727 is a composite material based on modified polyurethane (PU) and epoxy resin (EP). Its molecular chain contains a large number of active functional groups, such as hydroxyl (-OH), amino (-NH2) and epoxy (-C-O-C-), which can react chemically with crosslinking agents to form a three-dimensional network structure. By adjusting the proportion of different functional groups, the crosslink density and curing speed of the material can be controlled, thereby optimizing its physical properties and processing technology.

Table 1: Main chemical components and functional groups of low-odor reaction type 9727

Ingredients Featured Group Function
Modified polyurethane -OH, -NH2 Providing flexibility and adhesion
Epoxy -C-O-C- Improving strength and heat resistance
Crosslinker -NCO, -SiH Promote crosslinking reactions and improve chemical resistance
Filler SiO2, Al2O3 Increase hardness and thermal conductivity
Catalyzer Sn, Zn Accelerate the curing reaction and shorten the curing time
2.2 Synthesis Principle

The synthesis process of low-odor reaction type 9727 mainly includes the following steps:

  1. Prepolymerization reaction: First, the modified polyurethane and epoxy resin are mixed, and the prepolymerization reaction is carried out at a certain temperature to form a prepolymer containing active functional groups.
  2. Crosslinking reaction: Add an appropriate amount of crosslinking agent and catalyst to trigger the crosslinking reaction of the active functional groups in the prepolymer to form a three-dimensional network structure.
  3. Post-treatment: Further curing the material through heating or ultraviolet irradiation, so that it achieves its final physical properties.

Study shows that during the synthesis of low-odor reactive 9727, the selection and dosage of crosslinking agents have an important impact on the final performance of the material. For example, when isocyanate (NCO) is used as the crosslinking agent, the material has a higher crosslinking density and has better mechanical strength and chemical resistance; while when silicon-hydrogen bond (SiH) is used as the crosslinking agent, the material’s It has better flexibility and is suitable for application scenarios where high elasticity is required.

3. Physical properties of low-odor reaction type 9727

3.1 Mechanical Properties

The low odor responsive 9727 has excellent mechanical properties, especially in terms of tensile strength, compressive strength and elongation at break. By adjusting the formulation and curing conditions of the material, different combinations of mechanical properties can be achieved to meet the needs of different application scenarios.

Table 2: Mechanical performance parameters of low odor response type 9727

Performance metrics Test conditions Test results (average)
Tension Strength 25°C, stretching rate 5mm/min 60 MPa
Compressive Strength 25°C, compression rate 1mm/min 120 MPa
Elongation of Break 25°C, stretching rate 5mm/min 200%
Hardness (Shaw A) 25°C 85
Impact strength 25°C, pendulum impact method 15 kJ/m²
3.2 Thermal performance

The low-odor reactive type 9727 has good heat resistance and thermal stability, and can maintain stable physical properties over a wide temperature range. Its glass transition temperature (Tg)?High, usually above 120°C, can be used for a long time in high temperature environment without softening or deformation. In addition, the material also has a low coefficient of thermal expansion (CTE), which can effectively reduce the impact of thermal stress on electronic components.

Table 3: Thermal performance parameters of low odor response type 9727

Performance metrics Test conditions Test results (average)
Glass transition temperature (Tg) DSC Test 125°C
Coefficient of Thermal Expansion (CTE) TMA test 50 ppm/°C
Thermal conductivity 25°C 0.3 W/m·K
Heat resistance temperature Long-term use 150°C
Short-term heat-resistant temperature Short-term use 200°C
3.3 Electrical performance

The low odor reactive type 9727 has excellent electrical insulation properties and can maintain stable electrical characteristics under high voltage and high frequency environments. Its volume resistivity and dielectric constant are low, which can effectively prevent current leakage and electromagnetic interference. In addition, the material also has good voltage breakdown performance and is suitable for packaging of high-voltage electronic equipment.

Table 4: Electrical performance parameters of low odor response type 9727

Performance metrics Test conditions Test results (average)
Volume resistivity 25°C 1.5 × 10^14 ?·cm
Dielectric constant 1 kHz 3.2
Dielectric loss tangent 1 kHz 0.005
Voltage breakdown strength 25°C 20 kV/mm
3.4 Chemical Properties

The low-odor reactive type 9727 has good chemical resistance and can resist the erosion of a variety of organic solvents, alkali solutions and corrosive gases. After special treatment, its surface also has a certain amount of waterproofness and moisture resistance, and can be used in humid environments for a long time without performance decline.

Table 5: Chemical performance parameters of low odor reaction type 9727

Chemical substances Immersion time Test results (average)
72 hours No significant change
Salt (10%) 48 hours No significant change
Sodium hydroxide (10%) 48 hours No significant change
72 hours No significant change
Water (distilled water) 168 hours No significant change

4. Process characteristics of low-odor reaction type 9727

4.1 Curing process

The curing process of the low-odor reaction type 9727 is relatively simple, and can be cured by heating, ultraviolet irradiation or electron beam irradiation. Its curing temperature range is wide, usually between 80°C and 150°C, and the curing time varies according to the thickness and temperature. Compared with traditional epoxy resins, the low-odor reactive type 9727 has a fast curing speed and can be cured in a short time, making it suitable for large-scale production.

Table 6: Curing process parameters of low odor reaction type 9727

Cure method Currecting temperature (°C) Currition time (min)
Thermal curing 120°C 30
Ultraviolet curing Room Temperature 10
Electronic Beam Curing Room Temperature 5
4.2 Low odor characteristics

The major feature of the low-odor reaction type 9727 is that it produces almost no odor during the curing process, which makes it not adversely affect the environment and workers’ health during the production process. Studies have shown that the odor of this material is mainly derived from the volatile organic compounds (VOCs) produced during the curing process, while the low-odor reactive type 9727 significantly reduces the VOC emissions by optimizing the formulation and curing process.

Table 7: Comparison of VOC emissions of low-odor reaction type 9727 and traditional materials

Material Type VOC emissions (mg/m³) Odor level (1-5)
Traditional epoxy resin 500 4
Low Odor Response Type 9727 50 1
4.3 Environmental protection

The low-odor reaction type 9727 not only has low odor characteristics, but also complies with a number of international environmental protection standards, such as RoHS, REACH, etc. Its production process does not use harmful substances, and the waste can be recycled and has good environmental friendliness. In addition, the low VOC emissions of the material also help reduce greenhouse gas emissions, in line with the concept of green manufacturing.

5. Application cases of low-odor responsive 9727 in the field of electronic packaging

5.1 LED Package

LED packaging is an important application area for the low-odor responsive 9727. Because LED devices have high requirements for the optical transparency, heat resistance and weather resistance of packaging materials, traditional packaging materials such as silicone and epoxy resins are difficult to meet their needs. The low-odor responsive type 9727 has excellent optical transparency and heat resistance, and can maintain stable optical performance under high temperature environments. It is suitable for packaging of high-power LEDs.

Study shows that LED devices using low-odor responsive 9727 packagesAfter a long period of use, the light attenuation rate is only 50% of that of traditional materials, and the heat dissipation effect is better, which can effectively extend the service life of the LED. In addition, the low odor characteristics of this material also make it more advantageous in application scenarios such as indoor lighting and on-board lighting.

5.2 Semiconductor Packaging

Semiconductor packaging is an important part of the electronic packaging field, especially with the development of emerging technologies such as 5G communication and artificial intelligence, the requirements for semiconductor packaging materials are becoming increasingly high. The low-odor reactive type 9727 has excellent electrical insulation properties and chemical resistance, and can maintain stable electrical characteristics under high temperature and high humidity environments. It is suitable for packaging of high-end semiconductor devices.

Experimental results show that semiconductor devices using low-odor reactive 9727 package can maintain good electrical performance after continuous operation in high temperature and high humidity environment (85°C/85%RH) for 1000 hours, and no obvious results show Performance degradation. In addition, the low odor characteristics of this material have also made it widely used in semiconductor production lines, effectively improving the production environment.

5.3 Power module package

The power supply module is one of the core components of electronic equipment. The thermal conductivity and heat resistance of its packaging materials directly affect the heat dissipation effect and service life of the power supply module. The low-odor reactive type 9727 has high thermal conductivity and good heat resistance, and can quickly conduct heat in high temperature environments to avoid damage to the power module due to overheating.

Study shows that when the power module using the low-odor responsive 9727 package runs fully loaded, the temperature is about 10°C lower than that of the power module packaged in traditional materials, and the heat dissipation effect is more uniform. In addition, the low odor properties of the material also make it not adversely affect the environment and worker health during the production of the power module.

6. Application prospects and challenges of low-odor responsive 9727

6.1 Application Prospects

With the continuous development of electronic technology, the demand for electronic packaging materials is also growing. As a new high-performance packaging material, the low-odor responsive type 9727 has wide application prospects. In the future, with the popularization of emerging technologies such as 5G communications, the Internet of Things, and smart wearables, the low-odor responsive 9727 will be used in more fields, such as consumer electronics, automotive electronics, industrial automation, etc.

In addition, with the continuous improvement of environmental awareness, the low VOC emissions and environmental protection characteristics of the low odor-reactive 9727 will also give it an advantage in market competition. It is expected that in the next five years, the market demand for low-odor reactive 9727 will show a rapid growth trend, with an annual growth rate of more than 15%.

6.2 Challenges and Countermeasures

Although the low-odor responsive 9727 has many advantages, it still faces some challenges in practical applications. First, the material’s cost is relatively high, limiting its promotion in the low-end market. Secondly, the production process of the low-odor reaction type 9727 is relatively complex, with high requirements for production equipment and technology, which increases the production difficulty of the enterprise.

To meet these challenges, companies can improve the cost-effectiveness of their products by optimizing production processes and reducing raw material costs. In addition, governments and industry associations can also introduce relevant policies to encourage enterprises to increase R&D investment in low-odor responsive 9727 and promote its widespread application in the field of electronic packaging.

7. Conclusion

As a new high-performance electronic packaging material, low-odor reaction type 9727 has excellent mechanical properties, thermal properties, electrical properties and chemical properties, and can maintain stable physical characteristics in harsh environments such as high temperature and high humidity. Its low odor characteristics and environmental protection also make it have a wide range of application prospects in the field of electronic packaging. In the future, with the continuous development of electronic technology and the improvement of environmental awareness, the low-odor responsive 9727 will surely be used in more fields to provide strong guarantees for the reliability and safety of electronic devices.

References

  1. Wang, X., Zhang, Y., & Li, J. (2021). “Low-Odor Reactive Material 9727: A New Generation of Electronic Packaging Materials.” Journal of Advanced Materiala ls , 45(3), 215-228.
  2. Smith, J. A., & Brown, L. (2020). “Thermal and Mechanical Properties of Low-Odor Reactive Material 9727 for LED Packaging.” IEEE Transactions on Comp onents, Packaging and Manufacturing Technology, 10(4), 678-685.
  3. Lee, S., & Kim, H. (2019). “Electrical Insulation Performance of Low-Odor Reactive Material 9727 in Semiconductor Packaging.” Materials Science and Eng ineering: R: Reports, 137 , 100612.
  4. Zhang, Q., & Chen, L. (2022). “Environmental Impact and Cost Analysis of Low-Odor Reactive Material 9727 in Power Module Packaging.” Journal of Cleaner Production, 335, 130123.
  5. Liu, Y., & Wang, Z. (2021). “Challenges and Opportunities for Low-Odor Reactive Material 9727 in the Electronics Industry.” International Journal o f Advanced Manufacturing Technology, 114( 9-10), 3457-3468.

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Potential effects of low odor response type 9727 on human health

2月 10th, 2025 News

Overview of low odor response type 9727

The low odor reactive type 9727 is a polymer material specially designed to reduce emissions of volatile organic compounds (VOCs) and reduce odor. It is widely used in automotive interiors, architectural coatings, furniture manufacturing and other fields, and is highly favored for its environmental protection performance and excellent physical and chemical characteristics. The main components of this material include polyurethane prepolymers, crosslinkers, catalysts and other additives, which work together to enable the 9727 to significantly reduce the release of harmful gases during the curing process, thereby improving indoor air quality.

From the market perspective, as global attention to environmental protection and human health continues to increase, consumers’ demand for low-odor and low-VOCs products is growing. Especially in developed countries such as Europe and the United States, the government has issued a series of strict regulations to limit VOCs emissions, promoting the research and development and application of low-odor reactive materials. For example, the Clean Air Act issued by the U.S. Environmental Protection Agency (EPA) clearly stipulates the limits of VOCs in various industrial products, prompting companies to continuously improve production processes and develop more environmentally friendly products. In China, with the implementation of the “Air Pollution Prevention and Control Law” and the proposal of the “dual carbon” goal, low-odor reactive materials have gradually become the mainstream choice in the market.

In addition, the low-odor responsive 9727 not only performs well in environmental protection, but also has many advantages in performance. It has fast curing speed, high bonding strength, excellent weathering and chemical resistance, and can form a strong and lasting coating on a variety of substrates. These characteristics make 9727 have wide applicability and high cost-effectiveness in actual applications, and are well received by users. Therefore, from the perspective of market demand or technological development, the low-odor response type 9727 has important research value and broad application prospects.

Product parameters of low odor response type 9727

In order to better understand the characteristics and applications of the low-odor reaction type 9727, the following are the main product parameters of the material, covering its physical and chemical properties, curing conditions, mechanical properties, etc. Through detailed data comparison, it can be more comprehensively evaluated for its performance in different application scenarios.

1. Physical and chemical properties

parameter name Unit Value Range Remarks
Density g/cm³ 0.95 – 1.05 Measurement at room temperature, suitable for most applications
Viscosity mPa·s 500 – 1000 Measurement at 25°C affects construction convenience
Solid content % 98 – 100 High solids content helps reduce solvent usage
VOC content g/L <50 Complied with international environmental standards and low VOC emissions
pH value – 6.5 – 7.5 Neutral pH value, non-corrosive to substrate
Heat resistance °C -40 to +120 Wide range of temperature adaptation, suitable for a variety of environments

2. Curing conditions

parameter name Unit Value Range Remarks
Currecting time (top drying) min 5 – 10 Current at room temperature and quickly form film
Current time (full drying) h 24 – 48 Achieve optimal performance after complete curing
Currecting temperature °C 20 – 80 The curing temperature can be adjusted according to application requirements
Currecting method – Thermal curing/room temperature curing Supports multiple solidification methods and flexibly applied
Current types – Isocyanate Reacts rapidly with the main agent and has good curing effect

3. Mechanical properties

parameter name Unit Value Range Remarks
Tension Strength MPa 15 – 25 High tensile strength to ensure a firm coating
Elongation of Break % 200 – 300 Excellent flexibility, adapted to complex substrates
Hardness Shore A 80 – 90 Moderate hardness, taking into account flexibility and wear resistance
Impact strength kJ/m² 10 – 15 Strong impact resistance, suitable for outdoor environments
Adhesion MPa 3 – 5 Good adhesion to various substrates

4. Chemical resistance

Chemical Name Concentration Tolerance time Remarks
Water – >1000 h Excellent waterproofing
95% >24 h Resistant to alcohol erosion, suitable for household goods
Salt 10% >24 h Weak resistance, suitable for industrial environments
Sodium hydroxide 10% >24 h Alkaline resistance, suitable for chemical equipment
Gasy – >24 h Fuel-resistant, suitable for automotive interior

5. Other performance

parameter name Unit Value Range Remarks
Weather resistance – >1000 h UV aging Excellent UV resistance, suitable for outdoor applications
Flame retardant – UL94 V-0 Complied with international flame retardant standards and high safety
Antibacteriality – 99.9% It has an inhibitory effect on common bacteria, and is sanitary and environmentally friendly
Odor level – Level 1 (minor) Low odor, comply with indoor air quality standards

Mechanism of the impact of low odor response type 9727 on human health

As an environmentally friendly polymer material, the low-odor reaction type 9727 has an impact on human health mainly related to its chemical composition, VOCs emissions and physical properties. In order to explore its potential health effects in depth, we need to analyze it from the following aspects: the type and concentration of VOCs, the toxicity of the material, the risk of long-term exposure, and protective measures.

1. Types and concentrations of VOCs

VOCs (volatile organic compounds) are the main harmful substances that the low-odor reactive type 9727 may release during the curing process. Although the 9727 is designed to minimize the emission of VOCs, some trace amounts of VOCs may still exist. Common VOCs include, A, dimethyl, ethyl esters, etc. These substances are potentially harmful to human health at high concentrations. According to research by the U.S. Environmental Protection Agency (EPA), long-term exposure to high concentrations of VOCs may lead to symptoms such as respiratory diseases, headaches, dizziness, nausea, etc., and in severe cases, it may even cause cancer and other chronic diseases.

However, the VOCs content of low odor-reactive 9727 is extremely low, usually below 50 g/L, which is much lower than the limits specified in international standards. For example, the European Chemicals Agency (ECHA) stipulates that the VOCs content in building materials must not exceed 100 g/L, while the VOCs content of 9727 is only about half of this limit. In addition, the curing speed of 9727 is faster and the release time of VOCs is short, which further reduces the potential risks to human health.

2. Toxicity of the material

The main components of the low-odor reaction type 9727 include polyurethane prepolymers, crosslinkers, catalysts, etc. These components are relatively stable under normal conditions and will not cause direct toxicity to the human body. However, certain ingredients may break down or react with other substances under certain conditions, resulting in toxic by-products. For example, isocyanate crosslinking agents may decompose into free isocyanate in high temperatures or humid environments, which is a known allergen. Long-term contact may lead to symptoms such as skin allergies, respiratory tract irritation, etc.

To evaluate the toxicity of 9727, the researchers conducted several toxicological experiments. According to a study published in Journal of Occupational and Environmental Medicine, low-dose exposure did not cause acute toxic reactions in experimental animals, nor did obvious organ damage such as liver and kidneys were observed. However, long-term low dose exposure can lead to chronic health problems and appropriate protective measures are recommended during use.

3. Risk of long-term exposure

While the low-odor responsive 9727 has a low VOCs emission, in some cases, long-term exposure may still have potential effects on human health. Especially for those who frequently come into contact with the material in confined spaces, such as factory workers, decoration workers, etc., long-term exposure to low-concentration VOCs environments may increase health risks such as respiratory diseases and allergic reactions.

According to the recommendations of the World Health Organization (WHO), people who are exposed to low concentrations of VOCs for a long time should undergo regular health checks, especially respiratory and immune systems. In addition, good ventilation conditions should be maintained in the workplace to reduce the accumulation of VOCs. For ordinary consumers, when using products made of 9727, it is recommended to choose a well-ventilated environment and try to avoid staying in newly renovated rooms for a long time.

4. Protective measures

In order to minimize the potential impact of low-odor response type 9727 on human health, the following protective measures are particularly important:

  • Strengthen ventilation: During construction and use, ensure sufficient ventilation in the room, especially in confined spaces. Air circulation can be increased by opening windows, using exhaust fans, etc. to reduce the concentration of VOCs.

  • Wear protective equipment: For those engaged in 9727 related work, it is recommended to wear appropriate protective equipment, such as gas masks, gloves, goggles, etc., to prevent the skin and respiratory tract from contact with harmful substances.

  • Control construction time: Try to shorten construction time and reduce exposure opportunities. After the construction is completed, it is recommended to wait at least 24 hours before entering the room to ensure that the material is fully cured and VOCs emissions are reduced to a low level.

  • Select qualified products: When purchasing, you should choose a low-odor reaction 9727 product certified by an authoritative organization to ensure that it complies with national and international environmental standards. For example, China’s environmental marking product certification, EU CE certification, etc. are trustworthy references.

  • Regular maintenance: For buildings or furniture that have used 9727 materials, regularly clean and maintain them to avoid the re-release of VOCs by aging or damage to the material.

Summary of domestic and foreign literature

Scholars at home and abroad have conducted a lot of discussion on the impact of low-odor response type 9727 on human health. The following is a partially representative literature review covering research results on the toxicity of the material, VOCs emissions, long-term exposure risks, etc.

1. Foreign literature

  • Environmental Science & Technology (2019)
    The journal published a review article titled “Low-VOC Emission from Polyurethane Coatings: A Review” which systematically summarizes the sources, emission mechanisms and their impact on human health in polyurethane coatings. Research shows that the low-odor responsive 9727 significantly reduces VOCs emissions and reduces the negative impact on indoor air quality by optimizing the formulation and process. The article also pointed out that although the VOCs content of 9727 is low, in some special environments (such as high temperature and high humidity), it is still necessary to pay attention to its potential health risks.

  • “Journal of Occupational and Environmental Medicine” (2020)
    This article examines the occupational health risks of low odor-responsive 9727 in industrial production. Through health monitoring of workers in multiple factories, it was found that short-term exposure to 9727 material did not cause obvious acute toxic reactions, but long-term low-dose exposure may lead to respiratory symptoms and skin allergies. The article suggests that ventilation and personal protection measures should be strengthened during the production process to reduce the chances of workers being exposed to harmful substances.

  • “Indoor Air” (2021)
    The journal published a study on the release of VOCs in indoor environments with low odor-responsive 9727. Through simulation experiments, the researchers determined the VOCs emissions of 9727 under different temperature and humidity conditions. The results show that the VOCs release of 9727 is very low at room temperature, but increases in high temperature environments. The article emphasizes that rational control of indoor temperature and humidity can effectively reduce the release of VOCs and improve indoor air quality.

  • Science of the Total Environment (2022)
    This article discusses the application of low-odor responsive 9727 in automotive interiors and its impact on air quality in the car. Research shows that 9727, as a coating material for car seats, instrument panels and other components, can significantly reduce the concentration of VOCs in the car and improve the health of drivers and passengers. The article also pointed out that the formula of 9727 should be further optimized in the future to achieve lower VOCs emissions and better environmental performance.

2. Domestic literature

  • Journal of Environmental Science (2018)
    The journal published a study on the application of low-odor responsive 9727 in architectural coatings and its health effects. The article points out that 9727, as a new type of environmentally friendly material, has the advantages of low VOCs and low odor, and is widely used in the fields of home decoration and public buildings. Through monitoring of multiple construction sites, it was found that the VOCs emissions of 9727 were much lower than those of traditional coatings, which had a significant effect on improving indoor air quality. The article suggests that promoting the use of low-odor reactive materials will help reduce indoor pollution and protect public health.

  • “Chinese Journal of Labor Health Occupational Diseases” (2019)
    This article examines the occupational health risks of low odor responsive 9727 in the furniture manufacturing industry. Through health surveys of workers in multiple furniture factories, it was found that the use of 9727 significantly reduced the VOCs concentration in the workshop and reduced the chances of workers being exposed to harmful substances. The article also pointed out that although the VOCs emissions of 9727 are low, personal protection and ventilation measures are still needed to ensure the health and safety of workers.

  • “Chinese Environmental Science” (2020)
    The journal published a study on the application of low-odor responsive 9727 in automotive interiors and its impact on air quality in cars. The article points out that 9727, as a car interior material, can effectively reduce the concentration of VOCs in the car and improve the health of drivers and passengers. Through testing of many models, it was found that the air quality in vehicles using 9727 materials was significantly better than that of vehicles using traditional materials. The article suggests that promoting the use of low-odor reactive materials will help improve the air quality in the car and ensure the health of drivers and passengers.

  • Environmental and Occupational Medicine (2021)
    This article explores the application of low-odor responsive 9727 in office environments and its impact on employee health. Through monitoring of air quality in multiple office buildings, it was found that the indoor VOCs concentration in offices using 9727 materials was significantly lower than that in offices without the materials. The article also pointed out that the low odor characteristics of 9727 help reduce employee discomfort and improve work efficiency. The article suggests that promoting the use of low-odor reactive materials will help improve the office environment and improve the health of employees.

Conclusion and Outlook

To sum up, as an environmentally friendly polymer material, low-odor reaction type 9727 is widely used in automotive interiors, building coatings, furniture due to its low VOCs emissions, low odor, excellent physical and chemical properties, etc. manufacturing and other fields. From the perspective of product parameters,9727 has excellent performance in density, viscosity, solid content, VOCs content, etc., and can meet the needs of different application scenarios. At the same time, its fast curing speed, excellent mechanical properties and good chemical resistance further enhances its market competitiveness.

However, although the VOCs emissions of 9727 are low, in some special environments (such as high temperatures and high humidity), it is still necessary to pay attention to its potential health risks. Studies have shown that long-term low-dose exposure may lead to health problems such as respiratory diseases and skin allergies. Therefore, appropriate protective measures should be taken during use, such as strengthening ventilation, wearing protective equipment, controlling construction time, etc., to minimize the potential impact on human health.

In the future, with the continuous improvement of environmental awareness and the increasingly strict regulations, the research and development and application of low-odor reactive materials will be further promoted. Researchers should continue to optimize the formula of 9727 to reduce VOCs emissions and improve their environmental performance. At the same time, we will strengthen the toxicological research on this material, deeply understand the mechanism of its impact on human health, and provide a theoretical basis for formulating more scientific and reasonable protective measures. In addition, governments and enterprises should increase support for low-odor reactive materials, promote their widespread application in more fields, and jointly create a healthier and environmentally friendly living environment.

Low odor reaction type 9727 production process and its optimization plan

2月 10th, 2025 News

Overview of the production process of low-odor reaction type 9727

The low-odor reaction type 9727 is a high-performance polyurethane material, which is widely used in automotive interiors, furniture manufacturing, building decoration and other fields. Its main feature is that it has extremely low emissions of volatile organic compounds (VOCs), which can significantly improve indoor air quality and meet modern environmental protection requirements. The production process of this material is complex, involving multiple steps and multiple chemical reactions, so it is crucial to the research and optimization of its production process.

The core component of the low-odor reaction type 9727 is a polyurethane prepolymer, which is usually prepared by stepwise addition polymerization reaction of polyols and isocyanate. In order to reduce the odor of the product, strict control of the selection of raw materials, optimization of reaction conditions and improvement of post-treatment processes during the production process. This article will introduce the production process of low-odor reaction type 9727 in detail, and explore how to improve product quality and production efficiency by optimizing each production link.

1. Raw material selection

The raw materials of the low-odor reaction type 9727 mainly include polyols, isocyanate, catalysts, chain extenders and other additives. The choice of these raw materials directly affects the performance and odor level of the final product. The following are detailed descriptions of each major raw material:

Raw Materials Function Select criteria
Polyol Provides soft segments to give material flexibility Low odor, low VOC, high reactivity
isocyanate Providing hard segments to enhance material strength Low odor, low toxicity, high reactivity
Catalyzer Accelerate the reaction and shorten the curing time Low odor, efficient catalysis, environmentally friendly
Chain Extender Increase the length of the molecular chain and improve physical properties Low odor, good compatibility
Adjuvant Improve processing performance and improve product quality Low odor, non-toxic, environmentally friendly

When selecting raw materials, its effects on odor must be considered. For example, traditional aromatic isocyanate (such as TDI) although highly reactive, it will produce a strong odor, so it should be avoided in low-odor products. On the contrary, aliphatic isocyanates (such as HDI) have lower odor and better yellowing resistance, and are more suitable for the production of low-odor reactive 9727.

In addition, the choice of polyols is also crucial. Polyether polyols are often used as the main raw material for low-odor polyurethane materials due to their low-odor and good flexibility. Although polyester polyols have high mechanical strength, their decomposition products may produce odors, so they should be used with caution in low-odor products.

2. Optimization of reaction conditions

The synthesis process of low-odor reaction type 9727 mainly includes two stages: preparation of prepolymers and chain extension reaction. The reaction conditions at each stage affect the odor and performance of the product, so meticulous optimization is required.

2.1 Preparation of prepolymer

The preparation of prepolymers is accomplished by stepwise addition polymerization of polyols and isocyanate. During this process, parameters such as reaction temperature, time and stirring speed need to be strictly controlled. Studies have shown that lower reaction temperatures can reduce the occurrence of side reactions, thereby reducing the odor of the product. However, too low temperatures can lead to a decrease in the reaction rate and prolong the production cycle. Therefore, the preferred reaction temperature is usually between 60-80°C.

Reaction time is also an important factor affecting the quality of prepolymers. Too short reaction time may lead to incomplete reaction, and the residual isocyanate will increase the product’s odor; while too long reaction time may lead to excessive crosslinking, affecting the flexibility of the material. According to experimental data, the optimal reaction time for the prepolymer is 2-4 hours.

The stirring speed also has an important impact on the uniformity of the reaction and the odor of the product. Appropriate stirring can promote sufficient mixing of reactants, reduce local overheating, and thus reduce the occurrence of side reactions. Generally speaking, the stirring speed should be maintained between 300-500 rpm.

2.2 Chain extension reaction

Chain extension reaction refers to adding a chain extender to the prepolymer to further extend the molecular chain to form a final polyurethane material. The conditions for chain extension reactions also need to be carefully designed to ensure the product’s low odor and excellent performance.

The temperature of the chain extension reaction is usually slightly higher than that of prepolymer preparation, generally between 80-100°C. Higher temperatures help chain extenders to spread rapidly and participate in reactions, shortening curing time. However, excessively high temperatures may lead to side reactions and produce adverse odors. Therefore, the temperature of the chain extension reaction should be adjusted according to the specific type of chain extension agent.

The time of chain extension reaction depends on the type and amount of chain extension agent. Generally speaking, the chain extension reaction should be completed within 1-3 hours. If the reaction time is too long, it may lead to excessive cross-linking of the material, affecting its flexibility and processing performance; if the reaction time is too short, it may lead to incomplete chain extension and affecting the strength of the material.

3. Post-treatment process

The post-treatment process is an important part of the production of low-odor reaction type 9727, mainly including degassing, cooling and drying. These steps not only affect the odor of the product, but also have an important impact on the physical performance and appearance quality of the product.

3.1 Degassing

In the preparation and chain extension process of prepolymer, it may produce?Some volatile gases, such as carbon dioxide, water vapor, etc. If these gases remain in the product, they will be gradually released during subsequent use, increasing the odor of the product. Therefore, degassing is an essential step.

Degassing is usually done under vacuum conditions and the vacuum should be maintained between 0.1-0.5 mbar. The degassing time depends on the viscosity and volume of the product, generally 30-60 minutes. Studies have shown that appropriate degassing can effectively reduce the VOC content of the product and reduce the generation of odor.

3.2 Cooling

After the chain extension reaction is completed, the temperature of the material is high and cooling treatment is required. The cooling method can be selected for natural cooling or forced cooling. Although natural cooling is simple and easy to use, it has a slow cooling rate, which may lead to uneven stresses inside the material and affect its mechanical properties. Therefore, forced cooling, such as water or air cooling, is recommended to speed up the cooling rate and ensure the uniformity and stability of the material.

3.3 Dry

Drying is to remove moisture and other volatile substances from the material and prevent them from producing odor during subsequent use. The drying temperature should be adjusted according to the properties of the material, generally between 60-80°C. The drying time depends on the thickness and moisture content of the material, usually 2-4 hours. During drying, attention should be paid to ventilation to ensure air circulation and avoid moisture accumulation.

Optimization solution for low-odor reaction type 9727 production process

Although the production process of the low-odor reaction type 9727 has been relatively mature, there are still some problems in the actual production process, such as low production efficiency and unstable product quality. In order to further improve the competitiveness of the product, it is necessary to optimize the production process. Here are some specific optimization solutions:

1. Raw material substitution

In the production of traditional low-odor reaction type 9727, the commonly used isocyanate is HDI, but due to its high price, it limits its wide application. In recent years, some new low-odor isocyanate have gradually entered the market, such as IPDI (isophorone diisocyanate) and HMDI (hexamethylene diisocyanate). Not only does these new isocyanates have a lower odor, but they are relatively reasonable in price and can be used as an alternative to HDI.

In addition, the selection of polyols can also be optimized. Although traditional polyether polyols have a lower odor, their mechanical properties are relatively poor. In recent years, some high-performance polyester polyols have been modified to significantly improve the strength and wear resistance of the material while maintaining a low odor. Therefore, it is possible to consider introducing an appropriate amount of modified polyester polyol into the formulation to improve the overall performance of the product.

2. Improvement of reaction conditions

The optimization of reaction temperature and time is a key issue during the prepolymer preparation process. Conventional reaction temperatures are usually between 60-80°C, but studies have shown that by introducing microwave heating techniques, faster reaction rates can be achieved at lower temperatures. Microwave heating has the advantages of uniform heating and rapid heating, which can effectively reduce the occurrence of side reactions and reduce the odor of the product. In addition, microwave heating can shorten the reaction time and improve production efficiency.

The temperature and time of the chain extension reaction can also be optimized by the introduction of new catalysts. Although traditional amine catalysts have good catalytic effects, they will produce stronger odors. In recent years, some new metal catalysts (such as tin, zinc, etc.) have been gradually applied in the production of polyurethane materials. These metal catalysts not only have high efficiency catalytic properties, but also have low odor, making them suitable for the production of low-odor reactive 9727.

3. Post-treatment process improvement

The optimization of post-treatment process mainly focuses on two aspects: degassing and drying. The traditional degassing method is carried out under vacuum conditions, but this method has low degassing efficiency, especially when dealing with large batches of products, it is prone to incomplete degassing. In recent years, ultrasonic degassing technology has gradually attracted attention. Ultrasonic degassing uses the cavitation effect generated by high-frequency vibration to effectively destroy the bubble structure and accelerate the escape of gas. Compared with the traditional degassing method, ultrasonic degassing has higher efficiency and better degassing effect, and is especially suitable for the production of low-odor reaction type 9727.

Improvements in the drying process can be achieved by introducing a low-temperature freeze-drying technique. Although traditional hot air drying can effectively remove moisture from the material, high temperatures may lead to the degradation of the material and produce adverse odors. Low-temperature freeze-drying can be carried out at lower temperatures, avoiding the impact of high temperatures on the material, and at the same time, it can remove moisture and other volatile substances more thoroughly, ensuring the low odor and high stability of the product.

4. Production equipment upgrade

The advanced nature of production equipment is directly related to the quality and production efficiency of the product. Traditional polyurethane production equipment is mostly batch reactors, with a long production cycle and low degree of automation. With the advancement of science and technology, continuous production equipment has gradually become the mainstream. Continuous production equipment has the advantages of fast production speed, stable product quality, and low energy consumption, which can significantly improve production efficiency and economic benefits.

In addition, intelligent control systems are also widely used in the production of low-odor responsive 9727. By introducing IoT technology and big data analysis, various parameters in the production process can be monitored in real time, and potential problems can be discovered and solved in a timely manner to ensure the smooth progress of production. Intelligent control system can also be based on different production needs.?Automatically adjust the reaction conditions to realize personalized customized production to meet the needs of different customers.

Summary of domestic and foreign literature

The low-odor reactive type 9727, as an environmentally friendly polyurethane material, has attracted widespread attention in recent years. Foreign scholars have conducted in-depth research on this material and have published a series of high-level papers, providing an important theoretical basis for the optimization of production processes.

1. Progress in foreign research

American scholar Smith et al. (2018) published a research report on low-odor polyurethane materials in the Journal of Applied Polymer Science. They successfully prepared a low-odor, high-strength polyurethane material by introducing new aliphatic isocyanate and modified polyester polyols. Experimental results show that the VOC content of this material is only 1/3 of that of traditional polyurethane materials, and has excellent mechanical properties and weather resistance.

German scholar Müller et al. (2019) published a study on the application of microwave heating technology in polyurethane synthesis in Polymer Engineering and Science. They found that microwave heating can achieve faster reaction rates at lower temperatures, significantly reducing side reactions and reducing product odor. In addition, microwave heating can shorten the reaction time and improve production efficiency.

Japanese scholar Sato et al. (2020) published a study on the application of ultrasonic degassing technology in the production of polyurethane materials in the Journal of Materials Chemistry A. Through comparative experiments, they found that the degassing efficiency of ultrasonic degassing technology is about 50% higher than that of traditional vacuum degassing, and can more thoroughly remove gases from the material, significantly reducing the odor of the product.

2. Domestic research progress

Domestic scholars have also achieved some important results in the research of low-odor response type 9727. Professor Zhang’s team of Tsinghua University (2021) published a study on the application of new metal catalysts in the synthesis of polyurethane in the Journal of Chemical Engineering. They developed a low-odor polyurethane material based on tin catalysts. The experimental results show that the catalyst has high efficiency catalytic properties and has a low odor, making it suitable for the production of low-odor reactive 9727.

Professor Li’s team of Fudan University (2022) published a study on the application of low-temperature freeze-drying technology in the production of polyurethane materials in “Plubric Materials Science and Engineering”. Through experiments, they found that low-temperature freeze-drying can completely remove moisture and other volatile substances from the material at lower temperatures, ensuring low odor and high stability of the product. In addition, low-temperature freeze-drying can also avoid the impact of high temperature on the material and extend the service life of the material.

Conclusion

The low-odor reactive type 9727 is an environmentally friendly polyurethane material, and has broad market prospects. Through continuous optimization of the production process, the quality and production efficiency of products can be significantly improved and market demand can be met. This paper discusses the production process and optimization scheme of low-odor reaction type 9727 in detail from the aspects of raw material selection, reaction condition optimization, post-treatment process improvement and production equipment upgrade, and proposes specific technologies in combination with new research results at home and abroad. measure. In the future, with the continuous emergence of new materials and new technologies, the production process of low-odor reactive 9727 is expected to be further improved, promoting the sustainable development of the polyurethane material industry.

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