Flame-retardant polybutylene terephthalate resin composition and moldings

Abstract

A flame-retardant polybutylene terephthalate resin composition wherein (A) 20-70% by weight of a polybutylene terephthalate resin or a mixture of a polybutylene terephthalate resin and a polyethylene terephthalate resin, (B) 1-20% by weight of a vinyl based resin, (C) 1-20% by weight of a phosphoric acid ester, (D) 1-30% by weight of a salt of a triazine based compound and cyanuric acid or isocyanuric acid, and (E) 0.1-5% by weight of an alkaline earth metal compound are compounded, and formed articles thereof have high degrees of flame retardancy and tracking resistance, and are unlikely to allow occurrence of metal pollution or deterioration in hydrolyzability due to a phosphoric acid ester, and therefore are suitable for machine component parts, electrical / electronic component parts, and automotive component parts.

Description

technical field [0001] The present invention relates to a flame-retardant resin composition and a molded article in which a non-halogen flame retardant is blended with a polybutylene terephthalate resin. More specifically, it relates to non-halogen products that are highly flame-retardant, hydrolyzable, and creepage-resistant, and are less prone to metal contamination by phosphate esters, and are very suitable for mechanical mechanism parts, electrical and electronic parts, or automotive parts. A flame-retardant polybutylene terephthalate resin composition and a molded article based on a flame retardant. Background technique [0002] Polybutylene terephthalate resin (PBT) is used in a wide range of fields such as mechanical mechanism parts, electrical and electronic parts, and automobile parts by making full use of its excellent injection moldability and mechanical properties. [0003] PBT is inherently flammable, so when it is used as an industrial material such as mechani...

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Problems solved by technology

[0011] These materials are useful flame-retardant resin materials that do not use halogen-based flame retardants, but they have problems such as bleeding of aromatic phosphate esters on the surface of molded products, or metal contamination.

[0013] These materials are useful flame-retardant resin materials that do not use halogen-based flame retardants. However, by blending resins such as polyphenylene ether, there are problems in that mechanical strength decreases, fluidity during injection molding decreases, and molded products are colored yellow. , poor hydrolysis resistance, metal contamination, limited use, etc.

[0017] The above-mentioned resin components containing polyester resins and styrene-based resins are useful resin components for improving moldability such as warping, and the above-mentioned flame retardants are useful flame retardants without using halogen-based flame retardants. , but does not have the effect of reducing the hydrolyzability and metal contamination caused by phosphorus-containing compounds

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