Special engineering plastics refer to a class of engineering plastics with high comprehensive performance and long-term use temperature above 150 ℃, mainly including 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 electronics, electrical and special industries.

Here are some common high-temperature resistant plastics, among which PPS has a wide range of applications:

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

PTFE: high corrosion resistance, low friction coefficient of zui, temperature resistance between - 80 ° C and - 250 ° C, formula available. Fluoroplastics series high temperature resistant plastics also include: polytetrafluoroethylene propylene PCTFE; Perfluoroethylene propylene FEP; Soluble PFA

PPS: It has excellent comprehensive properties in chemical and high temperature environments, including wear resistance, high load capacity and dimensional stability. PPS is suitable for applications where the use of PA, POM, PET, PEI and PSU is defective, while the use of PI, PEEK and PAI is too expensive and must be replaced by more economical materials. Because TECHRON HPV PPS has a uniform distribution of internal lubrication, it shows good wear resistance and low friction coefficient. It overcomes the defect of premature wear of the corresponding surface of moving parts caused by glass fiber reinforced PPS, which is the friction coefficient of pure PPS. Undoubtedly, these characteristics and excellent resistance can make TECHNON HPV PPS widely used in various industrial equipment, such as industrial drying and food processing ovens, mechanical bearings and electrical insulation systems.

PEI polyamide: this kind of high polymer has outstanding thermal power (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 insulation parts and various structural components requiring high strength and stiffness at high temperatures. Because of its good hydrolysis resistance, it is 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 penetrate microwave.

PSU: It is a slightly amber amorphous transparent or translucent polymer with excellent mechanical properties, high rigidity, wear resistance and high strength. It has outstanding advantages of maintaining excellent mechanical properties even at high temperatures. Its range is - 100 - 150 ℃, long-term use temperature is 160 ℃, short-term use temperature is 190 ℃, and its thermal stability is high. It has good radiation stability, low ionic impurities and good chemical and hydrolysis resistance.