Scale-free low-volatility polycarbonate compound

Abstract

The invention relates to a scale-free low-volatility polycarbonate compound. The compound comprises 20 wt.% to 95 wt.% of polycarbonate PC, 4 wt.% to 75 wt.% of polymerized acrylonitrile-butadiene-styrene ABS, 0 wt.% to 10 wt.% of maleic anhydride functional group styrol copolymer, 0.2 wt.% to 2 wt.% of epoxy resin and 0.2 wt.% to 5 wt.% of white carbon black. The compound of the invention uses the superfine inorganic grains white carbon black as the scale resisting agent and uses the specific functional group styrol copolymer and / or epoxy resin to solve the problem that the inorganic fine powder is difficult to scatter. A bit of white carbon black can prevent the scale and fogging phenomena in the process of machining and using the PC / ABS alloy.

Description

technical field [0001] The present invention relates to a polycarbonate composition without fouling and low emission, in particular a polycarbonate composition which is not easy to cause fouling during processing or molding, and at the same time has very low volatile condensed components when heated. Background technique [0002] The plastic blend alloy of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer ABS has good heat resistance, high impact resistance and excellent processability. This alloy is widely used in auto parts, home appliances and electronic components. Usually in different applications, PC / ABS alloys may be blended with various additives, such as flame retardants, antistatic agents, heat stabilizers, ultraviolet absorbers, lubricants, and pigments, to provide different uses and Processing required PC / ABS resin composition. In the production of such a wide variety of plastic products, various processing molding methods such as calendering, in...

AI Technical Summary

Problems solved by technology

The generation of fouling will inevitably lead to inferior products, such as molded products with rough surface or molded products with inaccurate dimensions

Although some preventive measures can be taken according to the different causes of fouling, such as the selection of material components and the adjustment of the amount, or the processing conditions such as strict control of molding temperature to reduce fouling as much as possible, but in most cases Under the circumstances, it is necessary to stop the production molding process to implement mold cleaning measures to remove fouling, which will cause operational troubles and reduce productivity

[0004] In addition, when PC / ABS alloy materials are applied to automotive interior and exterior decoration and functional parts, such as door panels, instrument panels or lamp housings, various additives, processing aids, toners and other organic small molecule impurities in PC / ABS Under the action of light and heat, it will usually migrate to the surface of plastic products and release some volatile substances, which will cause fogging and odor in the car