Five Popular Engineering Plastics For High Temperature Resistance

Preface

Engineering plastics are a class of polymer materials with excellent performance, which are widely used in many fields. Among them, the super high temperature engineering plastics is because of its excellent high temperature resistance characteristics and attract attention. The following is an introduction to five kinds of super high temperature resistant engineering plastics.

Polyphenylene sulfide (PPS)

Polyphenylene sulfide (PPS) is a crystalline polymer with high thermal and chemical stability. It can work stably for a long time in a high temperature environment above 200°C and has good mechanical and electrical insulation properties.The main application fields of PPS include electronic and electrical appliances, automobile, aerospace, etc. In the field of electronic and electrical appliances, PPS is often used in the manufacture of connectors, switches, relays and other parts. In the field of electronic and electrical appliances, PPS is often used in the manufacture of connectors, switches, relays and other parts; in the automotive field, it can be used in the manufacture of engine peripheral parts, fuel system components, etc.; in the field of aerospace, PPS is widely used in the manufacture of high-temperature-resistant structural parts and functional parts.

The excellent performance of PPS comes from its unique molecular structure. Its molecular chain contains a large number of benzene rings and sulfur atoms, and these structures give it a high melting point, high strength, high rigidity and other characteristics. In addition, PPS also has good chemical resistance, can resist most acids, alkalis, salts and other chemical substances. However, PPS also has some shortcomings, such as brittleness, processing difficulty and so on. In order to overcome these shortcomings, it is usually necessary to modify it, such as the addition of toughening agents, improve the processing technology.

Polyimide (PI)

Polyimide is a polymer with excellent resistance to high temperatures. It can be used for a long time in high temperature environments above 300°C, and can even withstand high temperatures of up to 500°C for a short period of time.PI is not only resistant to high temperatures, but also has excellent mechanical properties, electrical insulation properties and chemical resistance. It has a wide range of applications in aerospace, electronics, chemical and other fields.

In the aerospace field, PI is often used in the manufacture of high-temperature structural components, Insulation Materials, sealing materials, etc.; in the field of electronics, PI can be used to make printed circuit boards, electronic packaging materials, etc.; in the chemical industry, PI can be used for the manufacture of corrosion-resistant pipelines, containers, etc. PI's high performance stems from its unique molecular structure, the molecular chain of the imide group gives it excellent resistance to high temperatures and chemical corrosion resistance. At the same time, PI can also be adjusted through different synthesis methods and modification means to meet the needs of different fields.

Polyetheretherketone (PEEK)

Polyetheretherketone is a high performance thermoplastic with high temperature resistance and mechanical strength. Its continuous use temperature can reach 260 ℃, instantaneous use temperature can even exceed 300 ℃. PEEK also has good chemical resistance, wear resistance and electrical insulation properties.

PEEK has important applications in the medical field, such as for the manufacture of artificial bones, joints and other medical devices; in the aerospace field, can be used to manufacture aircraft parts; in the automotive field, for the manufacture of high-performance parts.PEEK's excellent performance makes it an ideal alternative to metal, not only to reduce the weight, but also improve the performance and reliability of parts.

The preparation process of PEEK is relatively complex and costly. However, with the development of technology and the expansion of production scale, its cost is expected to be gradually reduced. Meanwhile, researchers are constantly exploring new modification methods and application areas to further utilize the advantages of PEEK.

Polybenzimidazole (PBI)

Polybenzimidazole (PBI) is an ultra high temperature resistant engineering plastic with special properties. It can be stabilized at very high temperatures, with long-term service temperatures up to about 370°C. PBI has excellent thermal stability, mechanical strength and chemical resistance.

PBI performs well in some applications with extreme temperatures and harsh chemical environments. For example, PBI can be used as the material of key components in some special chemical equipments; in some high temperature fuel cells, PBI is also used in the manufacture of key components.PBI is difficult to synthesize, which also leads to its high price. However, due to its unique properties, PBI is still indispensable in some fields that require very high performance.

In order to better utilize the advantages of PBI, researchers are still exploring new application routes and modification methods to improve its performance and reduce cost, and further expand its application scope.

Polyarylsulfone (PASF)

Polyarylsulfone is a kind of engineering plastics with excellent high temperature resistance and mechanical properties. Its long-term use temperature can reach about 200 ℃, and has good chemical resistance and dimensional stability.

PASF has certain applications in the fields of electronic and electrical appliances, automobiles, aerospace and so on. In the field of electronic and electrical appliances, it can be used to manufacture high-temperature-resistant insulating materials and structural parts; in the automotive field, it can be used to manufacture engine peripheral parts, etc. The performance characteristics of PASF make it an important engineering plastic, providing a reliable solution for many applications at high temperatures and in harsh environments.

However, PASF also faces some challenges, such as higher cost and more difficult processing. In order to better promote and apply it, further optimization of its production process and cost reduction are needed. At the same time, continuous technological innovation and application expansion are also needed to fully utilize its advantages and potential.

Summarize

In conclusion, these five kinds of super high temperature engineering plastics have their own characteristics and play an important role in different fields. With the continuous progress of science and technology and growing application demand, their application prospects will be broader, providing strong support for the development of various industries.