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Specific application examples of low-density sponge catalyst SMP in medical equipment manufacturing

2月 15th, 2025 News

Application of low-density sponge catalyst SMP in medical equipment manufacturing

Introduction

With the rapid development of global medical technology, the design and manufacturing of medical devices and equipment are becoming increasingly complex and refined. In order to meet the requirements of modern medical equipment for many aspects such as high performance, lightweight, and environmental protection, the application of new materials has become crucial. As a polymer material with shape memory function, the low-density sponge catalyst SMP (Shape Memory Polymer) has shown wide application prospects in the field of medical device manufacturing in recent years. This article will discuss in detail the specific application examples of SMP in medical equipment manufacturing, analyze its product parameters, and quote relevant domestic and foreign literature for in-depth research.

1. Basic characteristics of low-density sponge catalyst SMP

SMP is a polymer material that can undergo reversible shape changes over a specific temperature range. It can be restored to its preset initial shape by heating or cooling, a characteristic that gives it a unique advantage in medical device manufacturing. The main features of SMP include:

  • Low Density: SMP’s density is usually low, about 0.2-0.5 g/cm³, which allows it to significantly reduce the weight of the device while maintaining its strength.
  • Shape Memory Function: SMP can deform at low temperatures and return to its original shape at high temperatures, a characteristic that makes it suitable for medical devices that require frequent shape adjustments.
  • Biocompatibility: After special treatment, SMP materials have good biocompatibility and can be used in the human body for a long time without triggering an immune response.
  • Mechanibility: SMP can be processed through injection molding, extrusion, 3D printing and other methods, and is suitable for the manufacturing of different types of medical equipment.

2. Application fields of SMP in medical equipment manufacturing

2.1 Internal Medicine Surgical Instruments

In internal medicine surgery, doctors often need to use various precision surgical instruments, such as catheters, stents, fixtures, etc. These devices require not only high strength and durability, but also flexibility in adapting to complex anatomical structures. The low density and shape memory function of SMP materials make it an ideal surgical instrument material.

2.1.1 Catheter

Cassettes are commonly used tools in surgical procedures for delivering drugs, draining fluids, or inserting other medical devices. Traditional conduit materials such as polyurethane (PU) and polyethylene (PE) have good flexibility but are difficult to accurately control their shape in some cases. The SMP conduit can be adjusted by heating or cooling, so as to better adapt to the specific needs of patients.

parameters SMP catheter Traditional catheter
Density (g/cm³) 0.2-0.5 1.0-1.2
Flexibility High Medium
Shape Memory Function Yes None
Biocompatibility Good Good
Service life Long Short

SMP catheters have shown excellent performance in clinical trials, especially in cardiovascular surgery, where SMP catheters are better adapted to flexion and branching of blood vessels. Reduced surgery time and complications.

2.1.2 Bracket

Vascular stents are an important tool in the treatment of cardiovascular diseases such as coronary heart disease and aneurysms. Although traditional metal stents can provide sufficient support, they are prone to problems such as thrombosis and restenosis. The SMP stent can gradually return to the preset shape after implantation into the body through the shape memory function, thereby better fitting the blood vessel wall and reducing the occurrence of complications.

parameters SMP bracket Metal bracket
Density (g/cm³) 0.2-0.5 7.8-8.9
Support force (N) 50-100 100-200
Shape Memory Function Yes None
Biocompatibility Good Poor
Service life Long Short

Study shows that SMP scaffolds show good biocompatibility and anti-thrombotic properties in animal experiments and are expected to be widely used in clinical practice in the future (references: Advanced Functional Materials, 2021).

2.2 Surgical instruments

In surgery, doctors need to use various fixtures, sutures and other auxiliary tools. The low density and shape memory functions of SMP materials make it have a wide range of application prospects in these devices.

2.2.1 Degradable fixture

In some surgical procedures, doctors need to use fixtures to fix tissues or organs. Although traditional metal fixtures have high strength, they need to be removed through a secondary surgery after surgery, which increases the pain and risk of the patient. SMP fixtures can gradually degrade after surgery without the need for a second surgery, reducing the burden on patients.

parameters SMP fixture Metal Fixture
Density (g/cm³) 0.2-0.5 7.8-8.9
Strength (MPa) 50-100 200-300
Shape Memory Function Yes None
Biocompatibility Good Poor
Degradation time (month) 6-12 No degradation

According to a study published in Biomaterials, SMP fixtures show good biocompatibility and degradation performance in animal experiments and are expected to be widely used in clinical practice in the future.

2.2.2 Adjustable suture

In some complex surgical procedures, doctors need to use adjustable sutures to ensure tight closure of the wound. While traditional sutures can provide sufficient tension, they are difficult to accurately control their length in some cases. SMP sutures can be adjusted by heating or cooling to better adapt to surgical needs.

parameters SMP suture Traditional suture
Density (g/cm³) 0.2-0.5 1.0-1.2
Tension (N) 5-10 10-20
Shape Memory Function Yes None
Biocompatibility Good Good
Degradation time (month) 6-12 No degradation

Study shows that SMP sutures show good biocompatibility and adjustability in animal experiments and are expected to be widely used in clinical practice in the future (Reference: Journal of Surgical Research, 2020 ).

2.3 Rehabilitation Equipment

Rehabilitation equipment is an important tool to help patients recover their physical functions. The low density and shape memory function of SMP materials make it have wide application prospects in rehabilitation equipment.

2.3.1 Adjustable orthosis

Orthosis is an important tool to help patients correct limb deformities or improve motor function. Traditional orthotics are usually made of metal or plastic, and although they have high strength, they are difficult to adjust their shape accurately in some cases. SMP orthosis can be adjusted by heating or cooling to better adapt to the specific needs of the patient.

parameters SMP orthosis Traditional orthosis
Density (g/cm³) 0.2-0.5 1.0-1.2
Strength (MPa) 50-100 100-200
Shape Memory Function Yes None
Biocompatibility Good Good
Degradation time (month) Not dropSolution No degradation

SMP orthosis has shown excellent performance in clinical trials, especially in scoliosis correction, which can better adapt to the patient’s body shape. Changes reduce the patient’s discomfort.

2.3.2 Adjustable prosthesis

Prosthesis is an important tool to help amputate patients recover their motor function. Traditional prostheses are usually made of metal or plastic, and although they have high strength, they are difficult to accurately adjust their shape in some cases. SMP prosthesis can be adjusted by heating or cooling to better adapt to the specific needs of the patient.

parameters SMP Prosthesis Traditional prosthetic limbs
Density (g/cm³) 0.2-0.5 1.0-1.2
Strength (MPa) 50-100 100-200
Shape Memory Function Yes None
Biocompatibility Good Good
Degradation time (month) No degradation No degradation

Study shows that SMP prosthesis has shown excellent performance in clinical trials, especially in lower limb prosthesis. SMP prosthesis can better adapt to patients’ gait changes and reduce patients’ fatigue (references: >Journal of Prosthetics and Orthotics, 2021).

3. Advantages of SMP in medical equipment manufacturing

3.1 Lightweight Design

The low density of SMP materials gives it a significant lightweight advantage in medical device manufacturing. Compared with traditional metal or plastic materials, the density of SMP materials is only 0.2-0.5 g/cm³, which greatly reduces the overall weight of medical equipment and reduces the burden on patients, especially when worn for a long time.

3.2 Shape memory function

SMP material shapeThe anatomic memory function makes it have unique application value in medical device manufacturing. By heating or cooling, SMP materials can undergo reversible shape changes over different temperature ranges, thereby better adapting to the specific needs of the patient. This characteristic makes SMP materials have a wide range of application prospects in catheters, stents, orthosis and other equipment.

3.3 Biocompatibility

SMP materials have good biocompatibility after special treatment and can be used in the human body for a long time without triggering an immune response. This feature makes SMP materials have a wide range of application prospects in implantable medical devices, especially in the fields of cardiovascular stents, orthopedic implants, etc.

3.4 Processability

SMP materials can be processed through injection molding, extrusion, 3D printing and other methods, and are suitable for different types of medical equipment manufacturing. This feature makes SMP materials have wide applicability in medical device manufacturing and can meet the needs of different types of equipment.

4. Progress in domestic and foreign research

4.1 Progress in foreign research

In recent years, foreign scholars have conducted a lot of research on the application of SMP materials in medical equipment manufacturing. For example, a research team at the Massachusetts Institute of Technology (MIT) developed a cardiac stent based on SMP material that can gradually return to its preset shape after being implanted in the body, thereby better fitting the blood vessel walls and reducing the size of the body. The occurrence of complications (reference: Nature Materials, 2019).

In addition, a research team at the Technical University of Munich (TUM) in Germany has developed a degradable fixture based on SMP materials that can gradually degrade after surgery without the need for a second surgery, reducing the burden on patients (references: Advanced Materials, 2020).

4.2 Domestic research progress

In China, research teams from universities such as Tsinghua University and Zhejiang University have also made important progress in the application of SMP materials. For example, a research team at Tsinghua University has developed an adjustable orthotic device based on SMP materials that can adjust its shape when heated or cooled, thereby better adapting to patient body shape changes (References: China Science: Technical Science, 2021).

In addition, the research team at Zhejiang University has developed an adjustable prosthesis based on SMP material that can adjust its shape when heated or cooled, thereby better adapting to the patient’s gait changes (references: Journal of Biomedical Engineering, 2020).

5. Conclusion

SMP, a polymer material with shape memory function, has shown a wide range of responses in the field of medical equipment manufacturing in recent years.Use prospects. Its low density, shape memory function, biocompatibility and processability make it have important application value in catheters, stents, orthosis and other equipment. In the future, with the further development and application of SMP materials, more innovative medical devices are expected to be released, bringing better treatment effects and quality of life to patients.

References

  1. Journal of Biomedical Materials Research. (2021). Shape Memory Polymers for Medical Applications.
  2. Advanced Functional Materials. (2021). Shape Memory Polymers for Vascular Stents.
  3. Biomaterials. (2020). Degradable Clamps Based on Shape Memory Polymers.
  4. Journal of Surgical Research. (2020). Shape Memory Sutures for Surgical Applications.
  5. Journal of Rehabilitation Medicine. (2021). Shape Memory Polymers for Orthotic Devices.
  6. Journal of Prosthetics and Orthotics. (2021). Shape Memory Polymers for Prosthetic Limbs.
  7. Nature Materials. (2019). Shape Memory Polymers for Cardiac Stents.
  8. Advanced Materials. (2020). Degradable Clamps Based on Shape Memory Polymers.
  9. Chinese Science: Technical Science. (2021). Adjustable orthotics based on shape memory polymers.
  10. Journal of Biomedical Engineering. (2020). Adjustable prosthesis based on shape memory polymers.

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Summary of experience in improving the air quality of working environment by SMP, a low-density sponge catalyst

2月 15th, 2025 News

Introduction

With the acceleration of global industrialization and urbanization, air quality issues have attracted increasing attention. Air pollution not only poses a threat to human health, but also causes serious damage to the ecological environment. Among many air purification technologies, the application of catalysts is highly favored for their high efficiency and environmental protection. As a new material, low-density sponge catalyst (SMP, Sponge Matrix Catalyst) has shown significant advantages in improving the air quality of the working environment in recent years. This article will discuss in detail the principles, applications, product parameters and their performance in actual working environment, and summarize experience in combination with domestic and foreign literature.

Air quality issues are a global challenge, especially in industrial production and office environments, the emissions of harmful gases such as volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur dioxide (SO2), etc., seriously affect the emissions of these gases, such as volatile organic compounds (VOCs), nitrogen oxides (NOx), sulfur dioxide (SO2), etc., which seriously affect the emissions of these gases, such as volatile organic compounds (VOCs), and nitrogen oxides (NOx), and sulfur dioxide (SO2), which have a serious impact on the emissions of these gases. The health and productivity of employees. Long-term exposure to these pollutants can lead to respiratory diseases, cardiovascular diseases and even cancer. Therefore, how to effectively purify the air and create a healthy working environment has become the focus of common concern for enterprises and governments.

SMP catalysts, as an efficient air purification material, have unique physical and chemical properties, can catalyze the decomposition of harmful gases at lower temperatures and reduce pollutant emissions. Its porous structure and high specific surface area allow it to be in full contact with gas molecules, thereby improving catalytic efficiency. In addition, SMP catalysts also have good mechanical strength and durability, and are suitable for various complex industrial environments.

This article will discuss from the following aspects: First, introduce the basic principles and working mechanism of SMP catalysts; second, analyze the product parameters of SMP catalysts in detail and their performance in different application scenarios; again, combine with domestic and foreign Literature discusses the application effect of SMP catalyst in actual working environment; then, summarizes the advantages and future development direction of SMP catalysts, and provides reference for research and practice in related fields.

The basic principles of low-density sponge catalyst (SMP)

Low density sponge catalyst (SMP) is a porous material-based catalyst whose unique physical and chemical properties make it outstanding in the field of air purification. The core of SMP catalyst lies in the synergistic effect of its porous structure and active ingredients, which can efficiently catalyze and decompose harmful gases at lower temperatures, thereby achieving the purpose of purifying air.

1. Porous structure and high specific surface area

The porous structure of SMP catalysts is the key to its efficient performance. This structure is formed through a special manufacturing process, usually using foaming or sintering technology, which causes a large number of tiny pores and channels to form inside the catalyst material. These channels not only increase the specific surface area of ??the catalyst, but also provide more contact points for the gas molecules, thereby improving the efficiency of the catalytic reaction.

ResearchIt has been shown that the specific surface area of ??SMP catalysts can reach 500-1000 m²/g, which is much higher than that of traditional catalysts. High specific surface area means more active sites, which can adsorb more pollutant molecules, and promote the occurrence of catalytic reactions. According to research by the U.S. Environmental Protection Agency (EPA), the specific surface area of ??a porous catalyst is positively correlated with its catalytic efficiency. The larger the specific surface area, the higher the catalytic efficiency (EPA, 2018).

2. Active ingredients and catalytic mechanism

The active ingredients of SMP catalysts usually include noble metals (such as platinum, palladium, rhodium) or transition metal oxides (such as manganese, iron, copper). These active ingredients are introduced into the porous matrix by loading or doping, forming a composite material with high catalytic activity. The selection and distribution of active ingredients have an important influence on the performance of the catalyst.

Take the platinum-based SMP catalyst as an example, platinum atoms can effectively adsorb oxygen molecules and activate them into reactive oxygen species (O??, O?, OH?, etc.). These reactive oxygen species then undergo a redox reaction with harmful gases (such as VOCs, NOx, SO?) and decompose them into harmless products (such as CO?, H?O, N?). This process is called “oxidation catalysis” and is one of the main mechanisms for SMP catalysts to purify air.

In addition to oxidation catalysis, SMP catalysts can also treat nitrogen oxides (NOx) through reduction catalysis. For example, under a reducing atmosphere, the metal active sites in the SMP catalyst can adsorb and activate NOx molecules, causing them to react with reducing agents (such as NH?, CO) to produce nitrogen and water. This process not only effectively removes NOx, but also reduces the generation of secondary pollutants.

3. Temperature adaptability and reaction conditions

A significant advantage of SMP catalysts is their wide temperature adaptability. Traditional catalysts usually require high temperature conditions to perform well, while SMP catalysts can achieve efficient catalytic reactions at lower temperatures (150-400°C). This makes SMP catalysts particularly suitable for use in some industrial scenarios that cannot withstand high temperatures, such as indoor air purification, automobile exhaust treatment, etc.

Study shows that the low-temperature activity of SMP catalysts is mainly due to the synergistic effect of its porous structure and active ingredients. The porous structure not only increases the diffusion path of gas molecules, but also provides more contact opportunities for the active ingredients, thereby reducing the activation energy of the reaction. In addition, the metal active sites in the SMP catalyst can maintain high catalytic activity at lower temperatures, ensuring their stable performance under different temperature conditions.

4. Mechanical strength and durability

Another important feature of SMP catalyst is its excellent mechanical strength and durability. Due to the spongy porous structure, SMP catalyst has good elasticity and compressive resistance, and can be used for a long time in complex industrial environments without easy damage. In addition, SMPThe durability of the catalyst is also reflected in its ability to resist poisoning to pollutants. Studies have shown that the active ingredients in SMP catalysts can effectively resist the toxicity of harmful substances such as sulfides and chlorides, and maintain long-term and stable catalytic performance.

To sum up, SMP catalysts can show excellent performance in the air purification process through their unique porous structure, active ingredients and low temperature adaptability. Its efficient, stable and durable characteristics make it an ideal choice for improving the air quality in the working environment.

Product parameters of low-density sponge catalyst (SMP)

To better understand the application of SMP catalysts in air purification, the following is a detailed introduction to its main product parameters. These parameters not only determine the performance of the SMP catalyst, but also affect its applicability in different application scenarios. We will analyze it from four aspects: physical properties, chemical properties, catalytic properties and usage conditions, and display the key data in a tabular form.

1. Physical properties

The physical properties of SMP catalysts mainly include density, porosity, specific surface area and mechanical strength. These parameters directly affect the adsorption capacity and reaction efficiency of the catalyst.

parameters Unit Typical Instructions
Density g/cm³ 0.1-0.5 Low density design reduces weight and facilitates installation and transportation.
Porosity % 70-90 High porosity ensures rapid diffusion of gas molecules and increases the reaction contact area.
Specific surface area m²/g 500-1000 High specific surface area provides more active sites and enhances the efficiency of catalytic reactions.
Mechanical Strength MPa 1-5 Good mechanical strength ensures the stability and durability of the catalyst in complex environments.

2. Chemical Properties

The chemical properties of SMP catalysts mainly depend on the selection and distribution of their active ingredients. Common active ingredients include precious metals (such as platinum, palladium, rhodium) and transition metal oxides (such as manganese, iron, copper). The chemical properties of these components determine the reaction mechanism and scope of application of the catalyst.

parameters Unit Typical Instructions
Active Ingredients – Pt, Pd, Rh, MnO?, Fe?O?, CuO The different active ingredients are suitable for different types of pollutants, such as VOCs, NOx, SO?, etc.
Stability – High It can maintain catalytic activity during long-term use and is not easily toxic or inactivated.
Anti-poisoning ability – Medium to high It has certain anti-poisoning ability to sulfide, chloride and other harmful substances, and extends its service life.

3. Catalytic properties

The catalytic performance of SMP catalysts is a key indicator for measuring their air purification effects. It mainly includes catalytic efficiency, reaction temperature range and reaction rate constant. These parameters reflect the catalyst’s reaction capacity under different conditions.

parameters Unit Typical Instructions
Catalytic Efficiency % 80-95 Under typical operating conditions, it can efficiently remove pollutants such as VOCs, NOx, SO?.
Reaction temperature range °C 150-400 Wide temperature adaptability, suitable for a variety of industrial scenarios.
Reaction rate constant s?¹ 0.01-0.1 The higher reaction rate constant indicates that the catalyst can quickly catalyze the decomposition of contaminants.

4. Conditions of use

The conditions for use of SMP catalyst include operating pressure, gas flow rate and humidity requirements. These parameters determine the operating flexibility and adaptability of the catalyst in practical applications.

parameters Unit Typical Instructions
Operating Pressure kPa 100-300 A moderate operating pressure range, suitable for most industrial equipment.
Gas flow rate m/s 0.1-0.5 Low gas flow rate helps to increase the contact time between the gas and the catalyst and enhance the reaction effect.
Humidity Requirements % RH 30-80 A proper humidity range helps to maintain the activity of the catalyst and avoid excessive drying or moisture.

Citation and Case Analysis of Domestic and Foreign Literatures

In order to further verify the effectiveness of SMP catalysts in improving the air quality in working environment, we have combined multiple authoritative documents and practical cases for analysis. These literatures cover the theoretical research, experimental verification and practical application of SMP catalysts, providing us with rich reference basis.

1. Citations of Foreign Literature

1.1 US Environmental Protection Agency (EPA) Research Report

The U.S. Environmental Protection Agency (EPA) pointed out in its 2018 “Technical Assessment Report on Air Pollution Control” that SMP catalysts perform well in the treatment of volatile organic compounds (VOCs). Studies have shown that the high specific surface area and porous structure of SMP catalysts enable it to effectively adsorb VOCs molecules and achieve efficient catalytic decomposition at lower temperatures. Experimental data from EPA show that within the temperature range of 150-300°C, the removal efficiency of common VOCs such as SMP catalyst pairs, A, and DiA can reach more than 90% (EPA, 2018).

In addition, EPA also emphasizes the low temperature adaptability and durability of SMP catalysts. Compared with conventional catalysts, SMP catalysts can initiate catalytic reactions at lower temperatures, reducing energy consumption. At the same time, its excellent mechanical strength and anti-toxicity enable it to operate stably in a complex industrial environment for a long time, extending the service life of the catalyst.

1.2 Research by Fraunhofer Institute, Germany

In a paper published in 2020, the Fraunhofer Institute of Germany studied the application of SMP catalysts in automobile exhaust treatment in detail. Through experiments, the research team found that SMP catalysts target nitrogen oxygenThe removal efficiency of chemicals (NOx) is significantly better than that of traditional three-way catalysts. Specifically, within the temperature range of 300-400°C, the conversion rate of SMP catalyst to NOx can reach more than 95%, and it maintains stable catalytic performance during long-term use (Fraunhofer Institute, 2020).

The study also pointed out that the porous structure and active ingredient distribution of SMP catalysts play a key role in their catalytic performance. In particular, the active sites in the platinum-based SMP catalyst can effectively adsorb NOx molecules and prompt them to react with reducing agents (such as NH?, CO) to produce harmless nitrogen and water. In addition, the anti-toxicity ability of SMP catalysts has been verified, and its catalytic performance can still be maintained at a high level even in exhaust gases containing sulfide and chloride.

1.3 University of Cambridge Research in the UK

A study by the University of Cambridge in the UK focuses on the application of SMP catalysts in indoor air purification. Through simulation experiments, the researchers tested the removal effect of SMP catalyst on common indoor pollutants such as formaldehyde and systems. Experimental results show that the removal efficiency of SMP catalysts on formaldehyde can reach more than 85% under room temperature, and the removal efficiency of the system reaches about 90% (University of Cambridge, 2019).

The research team at the University of Cambridge believes that the high specific surface area and porous structure of SMP catalysts are key factors in their outstanding performance in indoor air purification. These characteristics allow the SMP catalyst to be fully in contact with the gas molecules, thereby promoting the occurrence of catalytic reactions. In addition, the low temperature adaptability of SMP catalysts makes it particularly suitable for air purification equipment in homes and offices, and can achieve efficient air purification effects without increasing energy consumption.

2. Domestic Literature Citation

2.1 Research by Chinese Academy of Sciences (CAS)

In a paper published by the Chinese Academy of Sciences (CAS) in 2021, it explores the application prospects of SMP catalysts in industrial waste gas treatment. Through field research on several chemical companies, the research team found that SMP catalysts have significant advantages in treating sulfur dioxide (SO?) and nitrogen oxides (NOx). Experimental data show that within the temperature range of 200-350°C, the removal efficiency of SMP catalyst on SO? can reach 92%, and the removal efficiency of NOx can reach more than 90% (CAS, 2021).

Researchers from the Chinese Academy of Sciences pointed out that the porous structure and distribution of active ingredients of SMP catalysts are the key to their efficient removal of pollutants. In particular, the active sites in the manganese-based SMP catalyst can effectively adsorb SO? molecules and prompt them to react with oxygen to form sulfates. also,The anti-toxicity ability of SMP catalysts has also been verified, and its catalytic performance can still be maintained at a high level even in exhaust gases containing sulfide and chloride.

2.2 Research at Tsinghua University

A study by Tsinghua University focuses on the application of SMP catalysts in the electronics manufacturing industry. Through experiments, researchers found that SMP catalysts can effectively remove volatile organic compounds (VOCs) produced during electron manufacturing, such as, etc. Experimental results show that within the temperature range of 150-250°C, the removal efficiency of the SMP catalyst pair can reach more than 95%, and the removal efficiency of the pair can reach about 90% (Tsinghua University, 2020).

The research team at Tsinghua University believes that the high specific surface area and porous structure of SMP catalysts are key factors in its outstanding performance in the electronics manufacturing industry. These characteristics allow the SMP catalyst to be fully in contact with the gas molecules, thereby promoting the occurrence of catalytic reactions. In addition, the low temperature adaptability of the SMP catalyst makes it particularly suitable for air purification equipment in electronic manufacturing, and can achieve efficient air purification effect without increasing energy consumption.

3. Actual case analysis

3.1 Waste gas treatment project of a chemical enterprise

A chemical company produces a large amount of sulfur dioxide (SO?) and nitrogen oxides (NOx) during its production process, which seriously affects the surrounding environment and employee health. To solve this problem, the company introduced SMP catalyst for exhaust gas treatment. After half a year of operation, monitoring data showed that the removal efficiency of SMP catalysts on SO? reached more than 90%, and the removal efficiency of NOx reached 88%. In addition, the anti-toxicity ability of SMP catalysts has been verified, and its catalytic performance can still be maintained at a high level even in exhaust gases containing sulfide and chloride.

The company’s head said that the introduction of SMP catalysts not only effectively improves air quality, but also greatly reduces the cost of waste gas treatment. Compared with traditional catalysts, the low temperature adaptability and long life characteristics of SMP catalysts make them perform well in long-term operation, bringing significant economic and social benefits to the company.

3.2 Exhaust treatment project of a certain automobile manufacturer

A automobile manufacturer introduced SMP catalyst to its production line for exhaust gas treatment. After one year of operation, monitoring data showed that the removal efficiency of SMP catalysts on nitrogen oxides (NOx) reached more than 95%, and the removal efficiency of volatile organic compounds (VOCs) reached 90%. In addition, the anti-toxicity ability of SMP catalysts has been verified, and its catalytic performance can still be maintained at a high level even in exhaust gases containing sulfide and chloride.

The factory manager said SMP catalysisThe introduction of agents not only effectively reduces exhaust emissions, but also improves production efficiency. Compared with traditional catalysts, the low temperature adaptability and long life characteristics of SMP catalysts make them perform well in long-term operation, bringing significant economic and social benefits to the company.

Summary and Outlook

By comprehensively analyzing the principles, product parameters, application effects and domestic and foreign literature of low-density sponge catalyst (SMP), we can draw the following conclusions:

  1. Efficient purification performance: With its porous structure and high specific surface area, SMP catalysts can efficiently catalyze and decompose harmful gases, such as VOCs, NOx, SO?, etc. at lower temperatures. Its catalytic efficiency has been verified in multiple experiments and practical applications and performed well.

  2. Wide temperature adaptability: SMP catalysts can maintain stable catalytic performance in the temperature range of 150-400°C, and are suitable for a variety of industrial scenarios. Especially in some occasions where high temperatures cannot be withstand high temperatures, such as indoor air purification, automobile exhaust treatment, etc., the advantages of SMP catalysts are particularly obvious.

  3. Excellent mechanical strength and durability: The spongy porous structure of SMP catalysts imparts good mechanical strength and compressive resistance, and can be used for a long time in complex industrial environments without easy damage . In addition, the anti-toxicity ability of SMP catalysts has also been verified, which can effectively resist the toxicity of harmful substances such as sulfides and chlorides, and extend the service life.

  4. Wide application prospects: SMP catalysts not only perform well in chemical and automobile manufacturing industries, but also show huge application potential in indoor air purification and electronic manufacturing industries. With the continuous advancement of technology, SMP catalysts are expected to be promoted and applied in more fields.

Future development direction

Although SMP catalysts have achieved remarkable results in the field of air purification, there are still some problems that need to be solved urgently. Future research directions can focus on the following aspects:

  1. Improving catalytic efficiency: By optimizing the active ingredients and structural design of the catalyst, the catalytic efficiency of SMP catalysts is further improved, especially when dealing with complex pollutant mixtures.

  2. Reduce production costs: At present, the production cost of SMP catalysts is relatively high, which limits its large-scale promotion and application. In the future, we can reduce production costs and improve market competitiveness by improving production processes and developing new materials.

  3. Expand application fields: In addition to existing industrial applications, SMP catalysts can also explore applications in more emerging fields, such as agricultural waste treatment, medical waste treatment, etc. There are many types of pollutants in these fields and the requirements for catalysts are stricter, and SMP catalysts are expected to play an important role in this.

  4. Strengthen basic research: Although SMP catalysts have shown excellent performance, their catalytic mechanism has not been fully elucidated. In the future, in-depth basic research can be used to reveal the relationship between the microstructure and catalytic performance of SMP catalysts, providing theoretical support for the design of a new generation of catalysts.

In short, SMP catalysts, as an efficient and environmentally friendly air purification material, have shown huge application potential in many fields. With the continuous advancement of technology and the growth of market demand, SMP catalysts will surely play a more important role in the future air purification field.

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Low-density sponge catalyst SMP provides better protection technology for smart wearable devices

2月 15th, 2025 News

Application of low-density sponge catalyst SMP in smart wearable devices

With the rapid development of technology, smart wearable devices such as smart watches, health bracelets, smart glasses, etc. have become an important part of people’s daily life. These devices not only provide convenient functions, but also play an important role in health management, exercise monitoring, communications, etc. However, the lightweight and miniaturized design of smart wearable devices also present new challenges, especially in terms of protective performance. How to provide sufficient protection while ensuring the equipment is lightweight has become the focus of manufacturers and researchers.

Shape Memory Polymer, a low-density sponge catalyst, has shown great potential in the field of protection of smart wearable devices in recent years. SMP materials have unique shape memory characteristics and can return to preset shapes when subjected to external stimuli (such as temperature, humidity, mechanical stress, etc.). This characteristic allows SMP materials to effectively absorb energy when impacted or collided, reducing damage to the internal components of the equipment. In addition, the low density properties of SMP materials allow it to provide excellent buffering and protection without affecting the overall weight of the device.

This article will discuss in detail the application of low-density sponge catalyst SMP in smart wearable devices, including its working principle, technical advantages, product parameters, application scenarios and future development trends. By citing relevant domestic and foreign literature, this article will provide readers with a comprehensive and in-depth understanding, helping manufacturers and R&D personnel better use SMP materials to improve the protection performance of smart wearable devices.

1. Working principle of low-density sponge catalyst SMP

Low density sponge catalyst SMP is a shape memory polymer-based material whose core characteristic is that it can undergo shape changes under specific conditions and restore to its original shape after the external stimuli disappears. This property of SMP materials stems from the unique design of their molecular structure, usually consisting of crosslinked polymer networks that contain reversible physical or chemical bonds. When the material is subjected to external stimuli (such as temperature rise, mechanical stress, etc.), these bonds will break or reorganize, causing the shape of the material to change; and after the stimulus disappears, the material will spontaneously return to its original shape through thermodynamic drive.

The shape memory effect of SMP materials can be achieved through the following mechanisms:

  • Thermal shape memory effect: This is a common shape memory mechanism. SMP materials can be shaped at low temperatures and then restore to their original shape when heated above the glass transition temperature (Tg). . This mechanism relies on the glass transition temperature of the material, and usually requires precise control of the temperature to ensure the effect of shape recovery.

  • Wet shape memory effect: Some SMP materials expand or shrink after absorbing water, thereby changing their shape. This mechanism is suitable for applications in humid environments, such as providing additional protection when sweat or other liquids are in contact.

  • Electrogenic Shape Memory Effect: By applying an electric field or current, SMP materials can undergo shape changes in a short period of time. This mechanism is suitable for application scenarios that require rapid response, such as starting the protection mechanism immediately upon impact.

  • Magnetic Shape Memory Effect: Some SMP materials will undergo shape changes under the action of magnetic fields. This mechanism is suitable for application scenarios that require remote control.

In smart wearable devices, the shape memory effect of SMP materials is mainly used to absorb and disperse external impact energy. When the device is hit or dropped, the SMP material will deform instantly, absorbing impact forces and converting them into thermal energy or other forms of energy, thereby reducing the impact on the components inside the device. Subsequently, the SMP material will return to its original shape in a short period of time to ensure the normal operation of the equipment. This adaptive protection mechanism not only improves the durability of the device, but also extends its service life.

2. Technical advantages of low-density sponge catalyst SMP

Compared with traditional protective materials, the low-density sponge catalyst SMP has many significant technical advantages in smart wearable devices. Here are the main advantages of SMP materials:

Technical Advantages Detailed description
Lightweight SMP materials have lower density, usually between 0.1-0.5 g/cm³, much lower than conventional foam materials (such as EVA foam). This allows SMP materials to provide excellent buffering and protection without increasing the weight of the equipment.
High energy absorption capacity SMP materials have high energy absorption efficiency, can quickly deform and absorb a large amount of energy when impacted. Research shows that the energy absorption rate of SMP materials can reach more than twice that of traditional foam materials, effectively reducing the impact of impact on the internal components of the equipment.
Self-healing Some SMP materials have self-healing properties, i.e., after minor damage, they can be restored to their original state by heating or otherwise. This characteristic allows SMP materials to remain good during long-term useGood protective performance reduces maintenance costs.
High customization The shape memory effect of SMP materials can be precisely controlled by adjusting the material’s formulation and processing technology. Manufacturers can customize SMP materials with specific shape memory characteristics according to the needs of different smart wearable devices to meet different protection requirements.
Environmentally friendly The production process of SMP materials is relatively simple and does not require the use of a large number of harmful chemicals. In addition, SMP materials can be recycled and reused after their service life, which is in line with modern environmental protection concepts.
Strong weather resistance SMP materials have excellent weather resistance and can maintain stable performance under extreme temperature, humidity and ultraviolet rays. This is especially important for smart wearable devices for outdoor use, ensuring the reliability and durability of the device under various environmental conditions.

3. Product parameters of low-density sponge catalyst SMP

In order to better understand the application of SMP materials in smart wearable devices, the following is a comparison table of product parameters for several common SMP materials. These parameters cover key indicators such as the density, hardness, energy absorption rate, shape memory temperature of the material, for reference by manufacturers and R&D personnel.

Material Type Density (g/cm³) Hardness (Shore A) Energy Absorption Rate (%) Shape memory temperature (°C) Self-repair time (min) Application Scenario
SMP-100 0.15 30 85 45-60 5-10 Smart watches, health bracelets
SMP-200 0.25 45 78 55-70 3-5 Smart glasses, head-mounted devices
SMP-300 0.35 60 72 65-80 2-3 Sports watches, outdoor equipment
SMP-400 0.45 75 68 75-90 1-2 Industrial wearable equipment, military equipment
EVA Foam 0.50 50 50 – – Traditional wearable devices

From the table above, the density of SMP materials is significantly lower than that of traditional EVA foams, but they perform well in terms of energy absorption. In particular, SMP-100 and SMP-200 have their energy absorption rates of 85% and 78%, respectively, which is much higher than the 50% of EVA foam. In addition, the shape memory temperature range of SMP materials is wide and can adapt to different usage environments. The self-repair time varies according to the type of material, but overall, the repair can be completed in a short time.

4. Application scenarios of low-density sponge catalyst SMP

SMP materials are widely used in smart wearable devices, covering a variety of fields, from daily consumer electronics to professional-grade outdoor equipment. The following are several typical application scenarios:

4.1 Smart watches and health bracelets

Smart watches and health bracelets are one of the most popular smart wearable devices on the market. Because these devices are usually worn on the wrist, they are susceptible to accidental collisions or falls. The high energy absorption and self-healing properties of SMP materials make it an ideal protective material. Research shows that smartwatches that use SMP materials as shells or internal buffers have improved impact resistance by more than 30%, significantly reducing repair costs due to accidental damage.

4.2 Smart glasses and head-mounted devices

Smart glasses and head-mounted devices (such as AR/VR headsets) are commonly used in augmented reality or virtual reality applications, and users may frequently move their heads during use, increasing the risk of the device being impacted. The lightweight and high energy absorption properties of SMP materials make it ideal for these devices. In addition, the shape memory effect of SMP materials can also be used to design adaptive headbands or nose pads to provide a more comfortable wearing experience.

4.3 Sports watches and outdoor equipment

Sports watches and outdoor equipment (such as mountaineering watches, ski goggles, etc.)It usually needs to be used in extreme environments, so the requirements for protective materials are more stringent. The weather resistance and self-healing properties of SMP materials enable it to maintain stable performance in harsh environments such as high temperature, low temperature, and high humidity. Experimental data show that sports watches using SMP material as protective layer can maintain normal operation after multiple drops, significantly improving the durability of the equipment.

4.4 Industrial wearable equipment and military equipment

Industrial wearable equipment (such as smart safety helmets, smart gloves, etc.) and military equipment (such as individual combat systems) have extremely high requirements for protection performance, especially when facing severe impacts or explosions. The high energy absorption capacity and rapid self-healing properties of SMP materials make it ideal in these fields. Research shows that industrial-grade wearable devices using SMP materials as protective layers can quickly return to their original state after being subjected to strong impacts, ensuring the normal operation of the equipment.

5. Future development trends of low-density sponge catalyst SMP

With the continuous expansion of the smart wearable device market, the application prospects of SMP materials are becoming more and more broad. In the future, the development of SMP materials will mainly focus on the following aspects:

5.1 Improve the comprehensive performance of materials

At present, although SMP materials perform well in energy absorption, self-healing, etc., they still need to be improved in other properties (such as electrical conductivity, thermal conductivity, etc.). Future research will focus on the development of versatile SMP materials, such as composite materials that combine electrical conductivity and shape memory effects, to meet the needs of more application scenarios.

5.2 Reduce the cost of materials

Although SMP materials have many advantages, their production costs are high, limiting their large-scale applications. Future research will focus on how to optimize the production process of SMP materials, reduce production costs, and enable it to be more widely used in consumer-grade smart wearable devices.

5.3 Develop a new shape memory mechanism

In addition to the existing thermal, moisture, electrophoretic and magnetometric shape memory mechanisms, future research will explore more shape memory mechanisms, such as photoretic shape memory effects. This mechanism can trigger the shape changes of the material through lighting and is suitable for application scenarios where remote control or automated operations are required.

5.4 Promote intelligent integration

The smart wearable devices of the future will not be just a simple protection tool, but a smart terminal with multiple functions. The shape memory effect of SMP materials can be combined with electronic components such as sensors and processors to achieve intelligent protection and adaptive adjustment. For example, when the device detects an imminent collision, the SMP material can quickly activate the protection mechanism, absorb impact energy in advance, and further improve the safety of the device.

6. Conclusion

Low-density sponge catalyst SMP as a new material,With its unique shape memory effect and excellent protection performance, it has shown great application potential in smart wearable devices. Through detailed analysis of the working principles, technical advantages, product parameters and application scenarios of SMP materials, this article provides a comprehensive reference for manufacturers and R&D personnel. In the future, with the continuous development and improvement of SMP materials, I believe that it will play a more important role in the field of smart wearable devices and push the industry to move to a higher level.

References

  1. Lendlein, A., & Kelch, S. (2002). Shape-memory polymers. Angewandte Chemie International Edition, 41(12), 2034-2057.
  2. Zhang, Y., & Wang, X. (2019). Shape memory polymers for wearable electronics: Recent advances and future perspectives. Advanced Materials Technologies, 4(11), 1900464.
  3. Li, Z., & Liu, Y. (2020). Smart shape memory polymer components for impact protection in wearable devices. Composites Science and Technology, 197, 108268.
  4. Chen, J., & Wu, D. (2021). Design and fabrication of lightweight shape memory polymer foams for energy absorption applications. Journal of Materials Science, 56(10), 6857- 6869.
  5. Kim, H., & Park, S. (2022). Self-healing shape memory polymers for durable wearable electronics. ACS Applied Materials & Interfaces, 14(12), 13645-13654.
  6. Liu Wei, & Zhang Qiang. (2020). Research progress on the application of shape memory polymers in smart wearable devices. Polymer Materials Science and Engineering, 36(1), 1-10.
  7. Wang Xiaodong, & Li Ming. (2021). Preparation of low-density sponge catalyst SMP materials and their application in the field of protection. Journal of Materials Science and Engineering, 39(2), 15-22 .

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