Polybutylene terephthalate (PBT GC)
PBT GC is special grades of polybutylene terephthalate for optic loose tube. PBT resin is one of the most suitable products for optic loose tube offering good physical properties, dimensional stability, chemical resistance, and fast crystallization speed. PBT GC has a high molecular weight and high melt strength for extrusion processing and meet strict requirements of optic loose tube, such as good hydrolysis resistance, easy high speed processing, crystallization properties.
Characteristic of PBT GC resin:
• Good hydrolysis resistance;
• High melt strength;
• High flexural modulus with good kink resistance;
• Excellent processing Property:
• Stability in processing;
• Low coefficient of thermal expansion;
• Low moisture absorption;
• Good abrasion resistance etc.

Polybutylene terephthalate (PBT -DH)