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Characteristics and application of Polybutylene terephthalate (PBT)

- Aug 21, 2018 -

             Characteristics and application of PBT


A. Mechanical properties: high strength, fatigue resistance, dimensional stability, creep is also small (under high temperature conditions also very little change);

B, heat aging property: the enhanced UL temperature index reaches 120~140 C (outdoor aging is also good).

C, solvent resistance: no stress cracking;

D, water stability: PBT is not easy to decompose with water.

E. Insulation performance: Excellent (humidity, high temperature can also maintain electrical stability, is an ideal material for manufacturing electronic and electrical parts);

F, molding processability: general equipment injection or extrusion. Because of its fast crystallization and good fluidity, the mold temperature is also lower than that of other engineering plastics. In processing thin-walled parts, it takes only a few seconds for large parts as long as 40-60s.


A. Electronic appliances: connectors, switch parts, household appliances, accessories, small electric cover or (heat resistance, flame retardant, electrical insulation, molding processing);

B, automobile:

1, external parts: the main corner of the Granger, the engine exothermic hole cover;

2. Internal components: endoscopic brackets, wiper support and control system valves.

3, automotive electrical parts: automotive ignition coil coils and various electrical connectors.

(The number of PBT used in automobiles is less than that of nylon, polycarbons and polyformaldehyde, but with the emergence of low warpage PBT, it will be more widely used in automotive parts in the future.)

C. Mechanical equipment: belt drive shaft, electronic computer cover, mercury lampshade, electric iron cover, baking machine parts and a large number of gears, cams, buttons, electronic watch housing, camera parts (with heat resistance, flame retardant requirements)

we are the supplier of PBT in china ,for price or more information,pls feel free to contact with me at   abner@gpcchem.com