PC/ABS-regenerated PCTG composite material for electric meter box and preparation method of PC/ABS-regenerated PCTG composite material

Abstract

The invention provides a PC / ABS-regenerated PCTG composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: a, 65-75 parts of PC; b, 10-20 parts of ABS; c, 10-20 parts of regenerated PCTG; d, 1-5 parts of a flexibilizer; e, 0.5-2 parts of a compatilizer; and f, 0.5-2 parts of other assistants, wherein the sum of the weight parts of the six components is 100 parts, wherein the regenerated PCTG is a PCTG product and a recycled crushed material obtained in product production. The PC / ABS-regenerated PCTG composite material prepared by the invention has high impact, high strength, high fluidity and high heat resistance, and meets performance requirements on electronic and electrical products. The invention further provides a recycling mode of the regenerated PCTG; and PC / ABS is improved by utilizing the regenerated PCTG, so the recycling benefit of the PCTG is maximized while the performance is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PC / ABS and recycled PCTG composite material for an electric meter box and a preparation method thereof. Background technique [0002] PC is an engineering plastic with excellent comprehensive performance. The benzene ring on the molecular main chain makes it have good mechanical properties and heat resistance, and the ether bond makes the molecular chain have a certain degree of flexibility. It is a kind of Rigid and tough engineering plastics. However, the processing fluidity is poor, the chemical resistance and weather resistance are poor, and it is sensitive to notches, which affects its wide use. Usually, ABS is added to improve its fluidity to ensure the molding process of parts, but ABS will reduce its heat resistance, impact and strength. . [0003] In recent years, PC / ABS alloy products have been used more and more widely, but it is difficult to achieve an a...

AI Technical Summary

Problems solved by technology

However, the processing fluidity is poor, the chemical resistance and weather resistance are poor, and it is sensitive to notches, which affects its wide use. Usually, ABS is added to improve its fluidity to ensure the molding process of parts, but ABS will reduce its heat resistance, impact and strength.

[0003] In recent years, PC / ABS alloy products have been used more and more widely, but it is difficult to achieve an alloy product with high impact, high strength and high heat resistance, mainly because ABS does not contribute to the heat resistance of the alloy

A kind of ABS / PBT / PCTG composite material is disclosed in CN106221151A, it has better low-temperature toughness and solvent resistance with respect to ABS / PBT / PC alloy, but this alloy heat distortion temperature is not high

[0004] The plastic meter box made of PC / ABS is the mainstream product of the plastic meter box on the market at present. It mainly improves the fluidity of PC through the addition of ABS, so that although the mechanical properties and heat resistance have declined, it can still basically Meet the requirements of general plastic meter boxes

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