The basic properties of the five general engineering plastics

Characteristics and uses of the five general engineering plastics:

Polyamide (PA) has won people's attention because of its unique low specific gravity, high tensile strength, wear resistance, good self-lubricating properties, excellent impact toughness, and the combination of rigidity and flexibility, combined with its simple processing, high efficiency, and specific gravity. Light (only 1/7 of metal), can be processed into various products instead of metal, widely used in the automotive and transportation industries. Typical products include pump impellers, fan blades, valve seats, bearings, various instrument panels, automotive electrical instruments, hot and cold air conditioning valves, etc., each of which consumes 3.6 to 4 kg of nylon products. Polyamide has the largest consumption in the automotive industry, followed by electronics and electronics.

Although polycarbonate (PC) is a thermoplastic resin, it has the strength similar to that of non-ferrous metals, and at the same time has both ductility and toughness. Its impact strength is extremely high, it can not be destroyed by hammering, and it can withstand TV. The explosion of the screen. The transparency of the polycarbonate is excellent and can be applied to any coloration. Due to the above excellent properties of polycarbonate, it has been widely used in various safety shades, signal lights, transparent protective panels for stadiums and sports fields, lighting glass, high-rise architectural glass, automotive mirrors, windshield panels, aircraft cabin glass, motorcycles. Driving a helmet. The largest market is computers, office equipment, automobiles, replacement glass and sheets.

Polyoxymethylene (POM) is known as “super steel” because of its superior mechanical and chemical properties, so it can be used as a material that many metal and non-metal materials cannot. It is mainly used for various precisions. High small modulus gears, instrumental precision parts with complex geometry, taps and air line valves. China uses polyoxymethylene for agricultural sprinkler irrigation machinery, which can save a lot of copper.

Polybutylene terephthalate (PBT) is a thermoplastic polyester. Non-reinforced PBT has better processing and electrical properties than other thermoplastic engineering plastics. PBT has a low glass transition temperature, and the mold temperature can be rapidly crystallized at 50 ° C, and the processing cycle is short. Polybutylene terephthalate (PBT) is widely used in the electronics, electrical and automotive industries. Due to the high performance and temperature resistance of PBT, it can be used as a flyback transformer for TV sets, car distribution boards and ignition coils, office equipment housings and bases, various automotive exterior parts, air conditioner fans, electronic stove bases, Office equipment shell parts.

Polyphenylene ether (PPO) resin has excellent physical and mechanical properties, heat resistance and electrical edge, low hygroscopicity, high strength, good dimensional stability, and creep resistance at high temperatures is the best among all thermoplastic engineering plastics. of. It can be applied to small appliances such as washing machine compressor cover, vacuum cleaner casing, coffee utensils, hair styling, microwave oven utensils, etc. Modified polyphenylene ether is also used in TV components, connectors for teleportation equipment, and the like.