Connector plastic materials are generally LCP, Nylon, PPS, PBT, PET

1. LCP

LCP, liquid crystal polymer, is a material with very good electrical insulating properties, which can maintain its electrical properties continuously at 200 to 300 degrees Celsius without being affected, and can reach temperatures of 316 degrees Celsius with intermittent use. In addition, LCP has very strong corrosion resistance, and will not suffer any corrosion in 90% acid or 50% alkaline environment. LCP also has excellent thermal stability and resistance to heat and chemicals.

2. Nylon

Nylon has good toughness, self-lubrication, chemical resistance and wear resistance. PA6T has better toughness than PA9T, and the heat distortion temperature is 290 degrees Celsius, which is very suitable for SMT connectors. PA46 products have high strength and good toughness, and are not prone to cracks.

3. PPS

Advantages: good rigidity, low water absorption, good dimensional stability, HDT260 ℃, good flame retardant performance.

Disadvantages: slow crystallization speed, products are prone to burrs, poor toughness

4. PBT

PBT is a crystalline engineering plastic. Has an obvious melting point (215-235 ° C). In the molten state, it has low viscosity, good fluidity, low hygroscopicity, and good electrical stability under humid and high temperature conditions.

Disadvantages: larger shrinkage after molding. (Because the heat resistance is not high enough, it cannot be used for SMT, only on DIP type connectors)

5. PET

Crystalline engineering plastics, melting point 245-260℃. Good mechanical properties, electrical properties, solvent resistance

Disadvantages: Anisotropy, larger shrinkage. The crystallization rate is slow. Drying requirements are higher.