Polybutylene terephthalate, belonging to the polyester series, is composed of 1.4-pbt butanediol (1.4-Butylene glycol) and terephthalic acid (TPA) or terephthalate (DMT) Milky white translucent to opaque, crystalline thermoplastic polyester resin produced by polycondensation and kneading process.
The characteristics of PBT plastic are as follows;
⒈Excellent mechanical properties, high mechanical strength, good fatigue resistance and dimensional stability. Creep is also small, and these properties show little change at high temperatures.
2. The energy consumed in the production of PBT is the highest among engineering plastics, which is of great significance to the situation of energy shortage in the world.
⒊Excellent heat aging resistance, the enhanced UL temperature index reaches 120~140℃, in addition, the outdoor long-term aging resistance is also very good.
⒋Good solvent resistance, no stress cracking.
⒌PBT is easy to flame retardant and can reach UL94V-0 level. Because of its good affinity with flame retardants, it is easy to develop reactive or additive flame retardant grades. Flame retardant products are widely used in the electrical and electronic industry.
⒍PBT is easy to decompose when exposed to water, so be careful when using it in high temperature and high humidity environment.
⒎Excellent electrical properties, high volume resistivity and dielectric strength, excellent arc resistance, minimal hygroscopicity, and can maintain stable electrical properties in humid and high temperature environments. It is ideal for manufacturing electronic and electrical parts Material.
⒏Easy for molding and secondary processing, easy to use ordinary equipment for injection molding or extrusion. Due to the fast crystallization speed and good fluidity, the mold temperature is also lower than other engineering materials. It only takes a few seconds to process thin-walled parts, and it only takes 40-60s for large parts.
The applications of PBT plastics are as follows:
1. Electronic appliances: non-fuse breakers, electromagnetic switches, flyback transformers, home appliance handles, connectors, casings, etc.;
2. Cars: door handles, bumpers, distributor covers, fenders, wire shields, wheel covers, etc.;
3. Industrial ZeroParts: OA fans, keyboards, fishing tackle reels, parts, lampshades, etc.
German-BASF Plastic Ultradur B 2550 Physical Properties Table Parameters
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