A kind of preparation method of flame retardant plastic composite material

Abstract

The invention discloses a method for preparing a flame-retardant plastic composite material. The method comprises the following steps: firstly drying polybutylene terephthalate (PBT) in an air dry oven at 110-120 DEG C for 4-6 hours, and drying acrylonitrile-butadiene-styrene copolymer (ABS) in the air dry oven at 60-70 DEG C for 2-4 hours; weighing corresponding raw materials according to the set mass percentage, and mixing the weighed raw materials into a high-speed mixer; adding the mixture into a twin-screw extruder for melting and mixing, cooling in a water tank, and granulating in a granulator to obtain the flame-retardant plastic composite material. The composite material prepared by the method has relatively high impact toughness, excellent processing performance and excellent flame retardant performance, and can be applied to the fields of automobiles, household appliances, electronic information and the like.

Description

technical field [0001] The invention relates to the technical field of engineering plastic alloys, in particular to a method for preparing a flame-retardant plastic composite material. Background technique [0002] In recent years, the plastics industry has made great progress, and engineering plastics, especially ABS, have been standardized in the fields of electrical appliances, transportation, and computers. ABS is the most used engineering plastic. It is an acrylonitrile-butadiene-styrene copolymer, which has good fluidity, high mechanical properties, and good surface quality. However, ABS itself is easy to burn and not resistant to aging (easy to turn yellow) ), low heat resistance, and high price also limit its application. Traditional flame retardant ABS uses bromine-containing flame retardants compounded with antimony-containing compounds. However, bromide will produce toxic gases during combustion, and antimony trioxide is also toxic, causing negative effects on hu...

AI Technical Summary

Problems solved by technology

In addition, PBT (polybutylene terephthalate) has the characteristics of high heat resistance, high strength, and good aging resistance, and its price is relatively low. It is also a widely used engineering plastic, but its toughness is poor, and its processing flow Poor performance, poor surface properties, due to the poor compatibility of PBT and ABS, the performance of simple blends is poor, especially the impact toughness is low, so compatibilization and toughening are required

[0004] The flame-retardant PBT / ABS alloy materials in the prior art are either not halogen-free, environmentally friendly, flame-retardant, or have low impact toughness, or poor fluidity, and their application range is not wide

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