Polyethylene terephthalate (PET), with the chemical formula (C10H8O4)n, is obtained by esterification of dimethyl terephthalate with ethylene glycol or esterification of terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then polycondensation. It is a crystalline saturated polyester, a milky white or light yellow, highly crystalline polymer with a smooth and glossy surface. It is a common resin in life and can be divided into APET, RPET and PETG.

It has excellent physical and mechanical properties in a wide temperature range, and the operating temperature can reach 120℃. It has excellent electrical insulation. Even at high temperature and high frequency, its electrical properties are still good, but its corona resistance is poor, and its creep resistance, fatigue resistance, friction resistance and dimensional stability are all good.

Product usage

Main applications in electronic appliances include: electrical sockets, electronic connectors, rice cooker handles, TV yokes, terminal blocks, circuit breaker housings, switches, motor fan housings, instrument mechanical parts, money counter parts, electric irons, and accessories for induction cookers and ovens; flow control valves, carburetor covers, window controllers, pedal transmissions, and switchboard covers in the automotive industry; gears, blades, pulleys, pump parts in the mechanical industry, and also wheelchair bodies and wheels, lampshade housings, lighting housings, drain pipe joints, zippers, watch parts, and sprayer parts.

In addition:

It can be spun into polyester fibers, i.e. polyester.

It can be made into thin films for substrates, insulating films, and product packaging for recording, video, and movie films.

As plastic, it can be blown into various bottles, such as cola bottles and mineral water bottles.

It can be used as electrical parts, bearings, gears, etc.