Engineering plastics can be divided into general engineering plastics and special engineering plastics.
Polyamide (PC), polyamide (nylon), polyoxymethylene (POM), denatured polyphenylene ether (denatured PPE), polyester (PETP, PBTP), polyphenylene sulfide (PPS) are used as general engineering plastics. ), polyaryl ester, and the like. Polypropylene can also be included in the scope of engineering plastics if it improves its hardness and cold resistance.
Special engineering plastics refer to a class of engineering plastics with high comprehensive performance and long-term use temperature above 150 °C, mainly including polyphenylene sulfide (PPS), polyimide (PI), polyetheretherketone (PEEK), Liquid crystal polymer (LCP) and polysulfone (PSF).
Engineering plastics have been used as mechanical parts for gears, worm gears, pulleys, bearing cages, cams, gaskets, bushings, bushings, seal rings, etc., partially replacing metal materials.
Engineering plastic products have been widely used in national defense, aviation, subway, ship, automobile, construction machinery (gear in single-slot winch), coal preparation machinery, ball mill, textile machinery, sugar cane press, petrochemical, light industry, home appliances (meters, water meters, toys), etc., involving defense military, industrial machinery, transportation, civil and many other fields.