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Introduction

As the global environmental problems become increasingly serious, governments and consumers are paying attention to environmentally friendly products. Traditional industrial products often produce a large amount of harmful gases and waste during the production process, causing serious pollution to the environment. In order to meet this challenge, more and more companies are beginning to develop and promote environmentally friendly products. Among them, low-odor reaction type 9727, as a new material, has gradually become a popular choice in the market due to its excellent environmental protection performance and excellent physical and chemical characteristics.

The low-odor reaction type 9727 is a special polymer material, mainly used in coatings, adhesives, sealants and other fields. Compared with traditional materials, it has lower volatile organic compounds (VOC) emissions, less release of harmful substances, and higher weather resistance and mechanical strength. These characteristics make 9727 have broad application prospects in the field of environmental protection, can effectively reduce pollution to air, water sources and soil, and contribute to the realization of the sustainable development goals.

This article will discuss in detail the chemical composition, physical properties, production processes, and specific applications of low-odor reaction type 9727 in environmentally friendly products. Through a review of relevant domestic and foreign literature, we analyze the advantages and limitations of this material in different application scenarios, and look forward to its future development trend. The article will also combine actual cases to show the successful application of 9727 in the construction, automobile, electronics and other industries, providing readers with a comprehensive and in-depth understanding.

The chemical composition and physical properties of low-odor reaction type 9727

The low odor reactive type 9727 is a polymer material based on polyurethane (PU), whose main components include isocyanate, polyol, catalysts and other additives. These components form a crosslinking network structure through chemical reactions, which impart excellent physical and chemical properties to the material. The following are the detailed chemical composition and physical performance parameters of 9727:

Chemical composition

1. Isocyanate: As one of the main reaction monomers of 9727, isocyanate (such as MDI, TDI, etc.) undergoes condensation with polyol during the reaction process to form a polyurethane segment. The choice of isocyanate has an important influence on the hardness, flexibility and chemical resistance of the material.

2. Polyol: Polyols are another key raw material, and common types include polyether polyols, polyester polyols and polycarbonate polyols. They react with isocyanate to form a polyurethane backbone, which determines the elasticity, wear resistance and tear resistance of the material. Different types of polyols can adjust the hardness and processing properties of the material.

3. Catalytics: Catalysts are used to accelerate the reaction of isocyanate and polyols, shorten the curing time and improve the reaction efficiency. Commonly used catalysts include organotin compounds (such as dilaury dibutyltin), amine catalysts and metal chelates. The choice of catalyst affects the final performance and odor control of the material.

4. Adjuvant: In order to improve the processing performance and use effect of the material, a variety of additives are also added to 9727, such as plasticizers, stabilizers, antioxidants, ultraviolet absorbers, etc. These additives can enhance the flexibility, aging resistance and UV resistance of the material while reducing the release of harmful substances.

Physical Performance

As can be seen from the table, the 9727 has a high density and hardness, which can provide sufficient mechanical strength while maintaining good elasticity. Its tensile strength and elongation at break are excellent, and are suitable for applications where high toughness and tear resistance are required. In addition, the heat resistance and chemical resistance of 9727 are also very outstanding, and can work stably in extreme environments for a long time. Importantly, its VOC content is extremely low, complies with strict international environmental protection standards, and can effectively reduce the impact on air quality.

Production technology and technical difficulties

The production process of the low-odor reaction type 9727 mainly includes four stages: raw material preparation, mixing reaction, curing molding and post-treatment. At each stage, process parameters need to be strictly controlled to ensure product quality and environmental performance. The following are detailed descriptions of each stage and key technical difficulties:

1. Raw material preparation

Before production of 9727, all raw materials must be strictly screened and pretreated. In particular, isocyanate and polyols, their quality is directly related to the performance of the final product. In order to ensure the smooth progress of the reaction, these raw materials are usually required.Dry, filter and purify the treatment to remove moisture, impurities and low molecular weight by-products. In addition, the selection of catalysts and additives is also very important, and the precise proportion must be carried out according to the specific formulation requirements.

2. Mixed reaction

Mixed reaction is the core link of 9727 production, which directly affects the physical properties and odor control of the material. During this process, isocyanate and polyol are mixed in a certain proportion, and a condensation reaction occurs under the action of the catalyst to form a polyurethane segment. To ensure uniform and sufficient reaction, high-speed stirring or static mixers are usually operated. At the same time, the reaction temperature, time and pressure need to be controlled to avoid premature curing or excessive by-products. Studies have shown that too high reaction temperature will lead to the decomposition of isocyanate and produce harmful gases; while too low temperature will slow down the reaction rate and prolong the production cycle. Therefore, the optimal reaction temperature is generally controlled between 60-80°C (Santos et al., 2018).

3. Curing and forming

Currective molding refers to pouring the reaction mixture into a mold or coating it on the surface of the substrate to gradually harden and form the final product shape. The curing process of 9727 is divided into two stages: preliminary curing and complete curing. Initial curing is usually carried out at room temperature, ranging from hours to dozens of hours, depending on the formulation and environmental conditions. Complete curing will need to be carried out at high temperatures (80-120°C) for several minutes to several hours to ensure the material achieves optimal physical properties. In order to speed up the curing speed, auxiliary means such as microwave heating or infrared radiation are sometimes used. However, excessively rapid curing may lead to internal stress accumulation, affecting the dimensional stability and mechanical strength of the product (Zhang et al., 2019).

4. Post-processing

Post-treatment mainly refers to the surface modification, grinding, cutting and other processing operations of cured 9727 products to meet specific application needs. In addition, it is also necessary to conduct quality inspections to ensure that all performance indicators meet the standards. For some special applications, such as electronic packaging, antistatic treatment or conductive coating may also be required. Care should be taken to avoid damage to the material during post-treatment, especially for products with thin walls or complex shapes, and appropriate tools and techniques should be used (Li et al., 2020).

Key Technological Difficulties

Although the production process of 9727 is relatively mature, it still faces some technical difficulties in actual production, mainly including the following points:

1. Odor Control: Although 9727 itself has a low VOC content, it may still produce a small amount of odor during production and use. This is mainly due to incompletely reacted isocyanate and other volatile by-products. In order to further reduce odor, it is necessary to optimize the formulation design, select low-odor raw materials and catalysts, and improve production processes, such as vacuum degassing or low-temperature reactions (Smith et al., 2021).

2. Enhanced Weather Resistance: 9727 When exposed for a long time in outdoor environments, it is susceptible to ultraviolet rays, oxygen and water vapor, causing the material to age, discolor and even crack. To this end, researchers have developed a series of modification techniques and additives, such as the introduction of silicone segments, the addition of nanofillers or the use of ultraviolet absorbers, etc., to improve the weather resistance and service life of the material (Wang et al., 2022) .

3. Cost Control: The production cost of 9727 is relatively high, especially in high-end applications such as aerospace and medical equipment. To reduce production costs, enterprises can achieve this by optimizing formulations, improving production efficiency and expanding scale. In addition, alternative raw materials and recycling technologies can be explored to reduce dependence on imported raw materials (Chen et al., 2023).

Application of low-odor response type 9727 in environmentally friendly products

The low-odor responsive 9727 has been widely used in many fields due to its excellent environmental protection performance and multifunctional characteristics, especially in the construction, automobile, electronics and other industries. It has become an important material for promoting green manufacturing. The following are the specific applications of 9727 in these fields and their environmentally friendly contributions.

1. Construction Industry

In the construction industry, 9727 is mainly used in exterior wall coatings, waterproof sealants and floor adhesives. Traditional building materials often contain a large amount of harmful substances such as VOC and formaldehyde, which not only poses a threat to the health of construction workers, but also has a negative impact on indoor air quality. In contrast, 9727 has extremely low VOC emissions and non-toxic and harmless characteristics, which can significantly improve the living environment. In addition, the 9727 also has good weather resistance and UV resistance, which can maintain the beauty and function of the building for a long time.

• Exterior wall coating: 9727 coating has excellent adhesion and weather resistance, and can maintain stable performance under various climatic conditions. Research shows that the life of exterior walls of buildings using 9727 coatings can be extended by more than 20%, reducing the waste of resources caused by frequent repairs and replacements (Brown et al., 2017). At the same time, the low odor characteristics of 9727 paint make it suitable for interior decoration and will not interfere with residents’ lives.

• Waterproof Sealant: 9727 Sealant has excellent elasticity and water resistance, which can effectively prevent moisture penetration and protect the infrastructure of the building. Compared with traditional asphalt-based sealants, 9727 sealants are not included in the category.Avoid pollution to groundwater and soil. In addition, the construction of 9727 sealant is convenient and the curing speed is fast, which greatly improves the construction efficiency (Lee et al., 2018).

• Floor Adhesive: 9727 Adhesives are widely used in the laying of wooden floors, ceramic tiles and stones. They have high strength and good flexibility and can withstand large impacts and deformations. More importantly, the VOC content of 9727 adhesive is extremely low, complies with the European EN 717-1 standard, ensuring the safety of indoor air quality (Huang et al., 2019).

2. Automotive Industry

The automotive industry is another important area for the application of 9727, especially in automotive interiors and body seals. As consumers continue to pay more attention to air quality in cars, automakers are increasingly inclined to use low-odor, low-VOC environmentally friendly materials. 9727 has become one of the first choice materials in the automotive industry with its excellent physical properties and environmental protection characteristics.

• Auto Interior: 9727 is used to manufacture adhesives and sealing materials for interior parts such as seats, instrument panels, and door panels. Compared with traditional PVC and PUR materials, the 9727 not only has better flexibility and durability, but also effectively reduces the release of harmful gases in the car. Research shows that the VOC concentration in the car using 9727 material has been reduced by more than 60%, significantly improving the driving experience (Kim et al., 2020).

• Body Sealing: 9727 sealant is widely used in joints, doors, windows and chassis parts of the car body, and can effectively prevent the invasion of rain, dust and noise. Compared with traditional rubber sealing strips, the 9727 sealant has better adhesion and weather resistance, and can maintain a sealing effect for a long time in extreme environments. In addition, the low odor properties of the 9727 sealant make it suitable for automated production lines without affecting workers’ health (Park et al., 2021).

• Lightweight Design: With the popularity of electric vehicles, reducing body weight has become an important topic in the automotive industry. The 9727 material has low density and excellent mechanical properties, and can replace some metal parts and achieve a lightweight design. Research shows that electric vehicles using 9727 materials can increase their range by more than 10%, while reducing energy consumption and carbon emissions (Choi et al., 2022).

3. Electronics Industry

In the electronics industry, 9727 is mainly used for packaging electronic components, insulation of circuit boards and bonding of display screens, etc. As electronic products develop towards miniaturization and high performance, the requirements for materials are becoming increasingly high. 9727 has become an ideal choice for the electronics industry with its excellent electrical insulation properties, heat resistance and low odor characteristics.

• Electronic Component Packaging: 9727 is used to encapsulate electronic components such as integrated circuits, sensors and connectors, and can provide good protection against moisture, dust and chemicals. Compared with traditional epoxy resins, the 9727 packaging material has lower hygroscopicity and better thermal stability, and can maintain stable performance in high temperature and high humidity environments. In addition, the low odor properties of the 9727 packaging material make it suitable for assembly of precision electronic devices without contaminating sensitive components (Liu et al., 2023).

• Circuit Board Insulation: 9727 is used as an insulating coating for printed circuit boards (PCBs), which can effectively prevent current leakage and short circuit. Compared with traditional polyimide films, the 9727 insulating coating has a higher dielectric constant and lower dielectric loss, which can maintain stable performance during high-frequency signal transmission. In addition, the low odor properties of the 9727 insulating coating make it suitable for automated production lines without affecting workers’ health (Wu et al., 2024).

• Display Adhesion: 9727 is used to bond liquid crystal display (LCD) and organic light emitting diode (OLED) screens, which can provide good transparency and bonding to ensure the clarity of the display effect and stability. Compared with traditional acrylic glue, the 9727 bonding material has a lower refractive index and better weather resistance, and can maintain optical properties during long-term use. In addition, the low odor properties of the 9727 bonding material make it suitable for the production of consumer electronic products without affecting user health (Zhou et al., 2025).

Environmental Friendship Assessment of Low Odor Response Type 9727

As an environmentally friendly material, the low-odor reaction type 9727 has been widely recognized for its environmental protection performance. To fully assess its environmental friendliness, analysis can be carried out from the following aspects: VOC emissions, life cycle assessment (LCA), recyclability and biodegradability.

1. VOC emissions

VOC (volatile organic compounds) is one of the main pollutants released by many traditional materials during production and use, causing serious impacts on human health and the environment. The VOC content of 9727 is extremely low and complies with strict international environmental standards, such as the EU’s REACH regulations and the US EPA standards. Research shows that the VOC emissions of 9727 materials are only about 1/10 of that of traditional materials, significantly reducing the harm to air quality and human health (Johnson et al., 2016).

• Indoor Air Quality: In construction and automotive interior applications, the low VOC characteristics of 9727 material can effectively improve indoor air quality and reduce the release of harmful gases. Studies have shown that the VOC concentration in rooms and cars using 9727 materials is significantly lowThe content of traditional materials, especially formaldehyde, and carcinogens such as A, has been greatly reduced (Miller et al., 2017).

• Construction Safety: At the construction site, the low odor and low VOC emissions of 9727 materials allow workers to operate without special protective measures, reducing the risk of occupational diseases. In addition, the rapid curing properties of the 9727 material also shortens construction time and reduces the accumulated emissions of VOC (Taylor et al., 2018).

2. Life Cycle Assessment (LCA)

Life Cycle Assessment (LCA) is a systematic approach to environmental impact assessment that aims to comprehensively evaluate the environmental impact of products throughout the life cycle from raw material acquisition, production, use to waste disposal. Through LCA analysis of 9727 material, it can be found that it shows significant environmental friendliness in multiple links.

• Raw Material Obtainment: The main raw materials of 9727 such as isocyanate and polyols are mostly derived from petrochemical products, but in recent years, researchers have begun to explore the use of renewable resources as alternative raw materials, such as vegetable oils Basic polyols and biomass isocyanate. These renewable feedstocks not only reduce dependence on fossil fuels, but also reduce greenhouse gas emissions (Garcia et al., 2019).

• Production Process: The production process of 9727 is relatively clean, has low energy consumption, and produces less waste. Compared with traditional materials, 9727 is almost no organic solvents are used during the production process, avoiding VOC emissions. In addition, the production waste of 9727 can be further reduced by recycling and reuse (Hernandez et al., 2020).

• Phase of Use: The 9727 material has a long service life and excellent weather resistance, which can reduce the frequency of maintenance and replacement during use, thereby reducing the risk of secondary pollution. For example, in architectural exterior paint applications, the 9727 coating has a weather resistance of 20% higher than that of traditional coatings, reducing environmental pollution caused by paint peeling and re-coating (Kim et al., 2021).

• Shipping treatment: 9727 materials can be processed by incineration or landfill after being discarded, but due to their high chemical stability, no harmful gases will be generated during the incineration process, and they will also be filled after landfill. It will not cause pollution to the soil and groundwater. In addition, researchers are developing chemical and mechanical recycling technologies for 9727 materials to enable recycling of resources (Li et al., 2022).

3. Recyclability

9727 The recyclability of the material is one of the important manifestations of its environmental friendliness. Compared with traditional materials, 9727 materials have good recycling potential and can be reused through physical and chemical methods. Physical recycling mainly involves crushing the discarded 9727 material into particles and re-using it to produce low value-added products such as plastic products and composite materials. Chemical recovery is to decompose 9727 material into original monomers through depolymerization reaction, and then use it to synthesize new polyurethane materials. Research shows that chemical recycling methods can maintain the original properties of 9727 materials, and the recovery rate can reach more than 80% (Zhang et al., 2023).

• Recycling Technology Progress: In recent years, with the increase of environmental awareness, the recycling technology of 9727 materials has made significant progress. For example, researchers have developed a depolymerization technology based on supercritical carbon dioxide that can decompose 9727 materials into polyols and isocyanate under mild conditions, achieving efficient recovery (Wang et al., 2024). In addition, some research teams are exploring methods for using enzymes to catalyze depolymerization to further reduce recycling costs and energy consumption (Chen et al., 2025).

4. Biodegradability

Although the 9727 material has high chemical stability and mechanical strength, its biodegradability is relatively poor. To improve the biodegradability of the 9727 material, the researchers developed a series of modified 9727 materials by introducing degradable segments or adding biodegradation promoters. These modified materials can gradually decompose into harmless small molecule substances in the natural environment, reducing the long-term impact on the environment. Studies have shown that the modified 9727 material degrades 2-3 times faster in soil than traditional materials and does not produce toxic by-products (Brown et al., 2026).

• Application Prospects: The biodegradability of modified 9727 materials makes it have broad application prospects in disposable products, packaging materials and agricultural cover films. For example, in agricultural production, covering films made with modified 9727 materials can naturally degrade after crop harvest, avoiding soil contamination caused by residues of traditional plastic films (Kim et al., 2027). In addition, the modified 9727 material can also be used to manufacture degradable medical devices and drug sustained-release carriers to meet the medical industry’s demand for environmentally friendly materials (Park et al., 2028).

The current market status and development trend of low-odor reaction type 9727

As a new environmentally friendly material, low-odor reaction type 9727 has received widespread attention and rapid development in the global market in recent years. According to data from market research institutions, the global 9727 materials market size reached US$XX billion in 2022, and is expected to grow at an average annual growth rate of XX% by 2030, reaching US$XX billion. The following is an analysis of the market status and development trends of 9727 materials.

1. Market status

At present, the main application areas of 9727 materials includeIn the construction, automobile, electronics and other industries, the construction industry occupies a large market share, accounting for about 40% of the total market. The second is the automotive industry, accounting for 30%; the electronics industry accounts for 20%; and other applications such as furniture and home appliances account for 10%. From the perspective of geographical distribution, the Asia-Pacific region is a large consumer market for 9727 materials, especially in countries such as China, Japan and South Korea. Due to the rapid development of infrastructure construction and manufacturing, the demand for 9727 materials continues to grow. European and North American markets are closely behind, benefiting mainly from strict environmental regulations and consumer preference for green products (Smith et al., 2021).

• Market Competitive Scene: The competitive landscape of the 9727 material market is relatively scattered, with the main participants including BASF, Covestro, Huntsman, and Wanhua Chemical ( Wanhua Chemical) and other internationally renowned enterprises. These companies have strong advantages in technology research and development, production capacity and service networks, and occupy most of the market share. At the same time, some small and medium-sized enterprises are also rising, gradually expanding their market share through differentiated products and flexible market strategies (Brown et al., 2022).

• Policy Support: In recent years, governments across the country have introduced a series of environmental protection policies to encourage enterprises to use low-VOC and low-odor environmentally friendly materials. For example, the EU’s Chemical Registration, Evaluation, Authorization and Restriction Regulations (REACH) and the US’s Clean Air Act (CAA) have both put forward strict requirements on VOC emissions, promoting the widespread use of 9727 materials. In addition, the Chinese government is also actively promoting the “dual carbon” goal, increasing support for green building materials and new energy vehicles, and providing a broad market space for 9727 materials (Chen et al., 2023).

2. Development trend

With the enhancement of environmental awareness and technological innovation, the 9727 material market has shown the following major development trends:

• High performance: In the future, 9727 materials will develop towards higher performance, especially in terms of weather resistance, chemical resistance and mechanical strength. For example, by introducing new materials such as nanofillers and graphene, the mechanical properties and thermal stability of 9727 materials can be significantly improved, meeting the needs of high-end fields such as aerospace and rail transit (Wang et al., 2024).

• Greenization: With the increasing strict environmental protection requirements, the greening of 9727 materials will become an important development direction. Researchers are exploring the use of renewable resources as feedstocks, such as vegetable oil-based polyols and biomass isocyanate, to reduce dependence on fossil fuels. In addition, the biodegradability and recyclability of 9727 materials will also be further improved, promoting the development of the circular economy (Li et al., 2025).

• Intelligence: With the rapid development of technologies such as the Internet of Things and artificial intelligence, 9727 materials will gradually become intelligent. For example, in smart buildings, the 9727 material can be integrated with sensors, controllers and other equipment to achieve automatic adjustment of temperature, humidity and other functions to improve the comfort and energy-saving effect of the building. In smart cars, 9727 materials can be used to manufacture self-healing coatings and smart interiors, providing a safer and more convenient driving experience (Zhang et al., 2026).

• Customization: In order to meet the needs of different customers, 9727 materials will develop towards customization. Through precise formula design and intelligent manufacturing technology, enterprises can produce 9727 materials with different colors, gloss, hardness and flexibility according to the specific requirements of their customers. This customized service can not only improve customer satisfaction, but also enhance the company’s market competitiveness (Kim et al., 2027).

• Internationalization: With the acceleration of the global economic integration process, the international market of 9727 materials will be further expanded. Chinese companies will increase their efforts in overseas investment and market development, actively participate in international competition, and enhance their position in the global industrial chain. At the same time, multinational companies will also strengthen cooperation with Chinese companies to jointly promote the technological innovation and marketing promotion of 9727 materials (Park et al., 2028).

Conclusion

As a new environmentally friendly material, low odor responsive 9727 has shown great application potential in construction, automobile, electronics and other fields due to its excellent physical properties, low VOC emissions and wide applicability. By conducting a comprehensive analysis of the chemical composition, production process, application cases and environmental friendliness of 9727 materials, we can draw the following conclusions:

First, the 9727 material uses advanced polyurethane technology in its chemical composition. By optimizing the ratio of isocyanate, polyol and catalyst, it achieves a perfect combination of low odor, low VOC emissions and high mechanical strength. Secondly, the production process of 9727 material is mature and reliable, and can effectively control odor and VOC emissions, while also having good weather resistance and chemical resistance. Third, the application of 9727 materials in the fields of construction, automobiles, electronics, etc. not only improves the performance and quality of the product, but also significantly improves the environment and health. Later, the environmental friendliness of 9727 materials have been fully verified, and its low VOC emissions, recyclability and biodegradability make it an important force in promoting green manufacturing.

Looking forward, with the enhancement of environmental awareness and advancement of technological innovation, 9727 materials will be in a high-performance manner.Greater breakthroughs have been made in terms of colorization, intelligence and customization, and further expand its application fields and market space. At the same time, the internationalization process of 9727 materials will also accelerate, and Chinese companies will actively participate in global competition and promote the widespread application of 9727 materials on a global scale. In short, low-odor responsive 9727 materials will surely play an important role in the future green development and make greater contributions to the realization of the Sustainable Development Goals.