Special engineering plastics are a kind of engineering plastics with high comprehensive properties and long-term service temperature above 150 ℃. They mainly include polyphenylene sulfide (PPS), polyimide (PI), polyether ether ketone (PEEK), liquid crystal polymer (LCP) and polysulfone (PSF). Special engineering plastics have unique and excellent physical properties, which are mainly used in high-tech fields such as electronic and electrical, special industry and so on.

Here are some common high temperature resistant plastics, among which PPS is widely used

Polyimide (PI): the long-term working temperature is above 350 ℃ and the short-term working temperature can reach 450 ℃. It is the engineering plastics with good high-temperature resistance in the current engineering plastics. In addition, its comprehensive performance is incomparable with other engineering plastics, and it is known as the "problem-solving expert" by the world.

PTFE: with high corrosion resistance, low friction coefficient, temperature resistance between - 80 ℃ and - 250 ℃, can provide formula. PFE, PFE and PFE

PPS: excellent comprehensive performance in chemical and high temperature environment, including wear resistance, high load capacity and dimensional stability. PPS is suitable for applications where PA, POM, pet, Pei and PSU are defective, while PI, peek and Pai are too expensive and must be replaced by more economical materials. Tectron HPV PPS exhibits wear resistance and low friction coefficient due to its uniform internal lubrication. It overcomes the friction coefficient of pure PPS and the premature wear of moving parts caused by Glass Fiber Reinforced PPS. There is no doubt that these characteristics and excellent resistance enable techron HPV PPS to be widely used in various industrial equipment, such as industrial drying and food processing ovens, mechanical bearings and electrical insulation systems.

Pei polyamide: this advanced polymer has outstanding thermal (long-term temperature resistance of 180 ℃), good toughness and rigidity, high hardness, good wear resistance and outstanding electrical properties, making it extremely suitable for use in electrical / electronic insulating parts and various structural components requiring high strength and stiffness at high temperature. Due to its good hydrolysis resistance, it has been widely used in the field of medical devices and analytical instruments; at the same time, as an amorphous material, Pei has good thermal insulation performance due to its ultra-high melting point. Pei also has excellent mechanical properties, electrical insulation, radiation resistance, high and low temperature resistance and wear resistance, and can be transmitted through microwave.

PSU: it is a kind of transparent or translucent amorphous polymer with amber color. It has excellent mechanical properties, high rigidity, wear resistance and high strength. It has excellent mechanical properties even at high temperature. Its range is - 100 - 150 ℃, long-term service temperature is 160 ℃, short-term service temperature is 190 ℃, and high thermal stability. It has good radiation stability, low ion impurities and good chemical and hydrolysis resistance