Polybutylene terephthalate (Polybutylene terephthalate), also known as polytetramethylene terephthalate, referred to as PBT. It is a polycondensate of terephthalic acid and 1,4-butanediol.

characteristic

a. Mechanical properties: high strength, fatigue resistance, stable size, and small creep (seldom changes under high temperature conditions);

b. Heat aging resistance: the enhanced UL temperature index reaches 120~140°C (the outdoor long-term aging resistance is also very good);

c. Solvent resistance: no stress cracking;

d. Water stability: PBT is not easy to decompose when encountering water;

e. Electrical performance:

1. Insulation performance: excellent (it can maintain stable electrical properties even in humidity and high temperature, and is an ideal material for manufacturing electronic and electrical parts);

2. Dielectric coefficient: 3.0-3.2;

3. Arc resistance: 120s

f. Molding processability: ordinary equipment injection or extrusion. Due to the fast crystallization speed and good fluidity, the mold temperature is lower than other engineering plastics. When processing thin-walled parts, it only takes a few seconds, and it only takes 40-60s for large parts..