1. Engineering plastics can be used as engineering materials and as a substitute for metal in the manufacture of machine parts and other plastics.
2. Engineering plastics have excellent comprehensive performance, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials.
3. Engineering plastics can meet higher requirements in terms of mechanical properties, durability, corrosion resistance, heat resistance, etc., and are more convenient to process and can replace metal materials. Engineering plastics are widely used in industries such as electronics and electrical, automotive, construction, office equipment, machinery, aerospace, etc. Replacing steel and wood with plastics has become an international trend.
4. Engineering plastics can be divided into two categories: general engineering plastics and special engineering plastics. The former mainly includes five general engineering plastics: polyamide, polycarbonate, polyoxymethylene, modified polyphenylene ether, and thermoplastic polyester; The latter mainly refers to engineering plastics with a heat resistance of over 150 ºC, including polyimide, polyphenylene sulfide, polysulfone, aromatic polyamide, polyarylester, polyphenylester, polyaryletherketone, liquid crystal polymer, and fluororesin.