High-impact high-density PC/ABS alloy and preparation method thereof

Abstract

The invention relates to a high-impact high-density PC / ABS alloy and a preparation method thereof. The PC / ABS alloy is prepared from the following raw materials in percentage by weight: 45-55 percent of polycarbonate, 15-30 percent of an acrylonitrile butadiene styrene copolymer, 3-5 percent of an ABS maleic anhydride-grafted polymer, 3-5 percent of a methyl methacrylate-styrene-butadiene copolymer, 15-25 percent of pigment level barium sulfate, 0.3-0.8 percent of a lubricating agent and 0.2-0.4 percent of an antioxidant, wherein the granularity of the pigment level barium sulfate is 8000-12000 meshes. The alloy provided by the invention has good impact toughness and processing fluidity and also has high density, and the requirements on high impact resistance and high density of PC / ABS alloy materials in certain special parts can be met.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-impact high-density PC / ABS alloy and a preparation method thereof. Background technique [0002] Polycarbonate is a widely used engineering plastic with good impact toughness, heat resistance, dimensional stability and light stability. However, it has the defects of sensitivity to notch, high internal stress of the product, high melt viscosity, poor fluidity and difficult molding. Acrylonitrile-styrene-butadiene copolymer (ABS) resin is a general-purpose plastic resin with excellent impact resistance and good molding processability, and has a high performance-price ratio, easy to electroplate, and stable in size It has good properties, but it also has the defects of poor weather resistance and heat resistance. [0003] The PC / ABS blend prepared by compatibilizer technology, that is, the PC / ABS alloy is an important engineering plastic alloy. This alloy has good...

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Problems solved by technology

[0004] The patent with application number 200910198009.7 mentions the use of 3-8% talcum powder to improve the rigidity of flame-retardant PC / ABS, but does not discuss its specific influence and effect on density

The patent application number 00817689.2 mentions that adding talcum powder to flame-retardant PC / ABS can improve the stress cracking resistance and rigidity of the material, but the patent also does not disclose the influence of components on the material density; application number 201310523104.6 discloses a PC / ABS alloy with mineral fillers, the purpose of which is to obtain an alloy with light weight, heat resistance, and good processability, and the corresponding influence of the selection of mineral fillers on impact performance and density is not disclosed

So far, there is no high-density and high-impact PC / ABS alloy material prepared by adjusting the composition formula in the prior art, that is, the PC / ABS alloy material in the prior art still cannot meet the high-impact and high-density special parts. requirements, which greatly limits the application of PC / ABS alloys in various fields