POLYBUTYLENE TEREPHTHALATE RESINS (COMPOUNDING)

Polybutylene Terephthalate, PBT for short, is a thermoplastic polyester resin derived from copolymerization of 1.4-butanediol and terepthalic acid (PTA). Fiber glass can be added in the later stage of production to strengthen the product. Other additives can also be added to give PBT resins various electrical or mechanical advantages or to improve other attributes, such as fire retardation. It is high performance engineering plastic with the widest uses.

Table 1: Common PBT Compounding Ingredients & Their Functions

Table 2: Key Properties of Compounded PBT

Table 3: Comparison with Other Engineering Plastics

Table 4: Major Applications of Compounded PBT

PBT resins are widely used in compounding due to their excellent mechanical properties, electrical insulation, and chemical resistance. Glass fiber reinforcement enhances strength, while flame retardants make them suitable for electrical applications. Compared to nylon and PET, PBT offers faster processing and better dimensional stability, making it a preferred choice in automotive and electronics industries.

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