Glass fiber reinforced halogen-free flame-retardant polybutylene terephthalate (PBT)

Abstract

The invention relates to glass fiber reinforced halogen-free flame-retardant polybutylene terephthalate (PBT), which is characterized by being prepared from the following raw materials in part by mass: 40 to 50 parts of PBT, 10 to 20 parts of halogen-free flame retardant, 2 to 8 parts of acrylate copolymer, 1 to 5 parts of nano-scale polyethylene terephthalate (PET), 1 to 5 parts of antioxidant and 20 to 40 parts of glass fibers, wherein the halogen-free flame retardant is melamine salt. Products prepared from the glass fiber reinforced halogen-free flame-retardant PBT are low-smoke, environment-friendly, hard to break and easy to process and form.

Description

technical field [0001] The invention relates to a glass fiber-reinforced halogen-free flame-retardant PBT, which is mainly used for the housing of household food machinery. Background technique [0002] Polybutylene terephthalate, English name polybutylene terephthalate (referred to as PBT), can also be called thermoplastic polyester plastic, PBT is milky white translucent to opaque, crystalline thermoplastic polyester. Because PBT has heat resistance, weather resistance, chemical resistance, good electrical properties, low water absorption, and good gloss, it is widely used in electronic appliances, auto parts, machinery, household products, etc., and PBT products are also compatible with PPS, PC, POM, PA, etc. are called the five general-purpose engineering plastics. In order to achieve a better flame retardant effect, the existing PBT products all add halogen flame retardants such as bromine and chlorine to their raw materials. Although the flame retardant effect is exce...

AI Technical Summary

Problems solved by technology

In order to achieve a better flame retardant effect, the existing PBT products all add halogen flame retardants such as bromine and chlorine to their raw materials. Although the flame retardant effect is excellent, it will produce smoky, highly toxic hydrogen halide and other Contains halogenated organic substances, and will produce dioxins when burned, which is extremely harmful to the human body

Unable to meet the use requirements of food machinery (such as soybean milk machine and other products)

[0003] The use of halogen-free flame retardants, although meeting the requirements of low smoke and environmental protection, requires a large amount of halogen-free flame retardants to meet the requirements of flame retardancy, resulting in low physical properties, brittle products, and difficult processing.