Polycarbonate composite material

Abstract

The invention discloses a polycarbonate composite material, which is prepared from the following components in terms of parts by weight: 30 to 80 parts of polycarbonate, 5 to 40 parts of ABS (Acrylonitrile-butadiene-styrene) and 5 to 80 parts of fillers, wherein on the basis of the total weight of the polycarbonate composite material, the weight content of iron element is 0.1 to 50 ppm, and the weight content of copper element is 0.01 to 20 ppm. Discovered in surprise, trace amount of the iron element and the copper element are added in the composite material, the content of the iron element in the composite material is controlled in the range of 0.1 to 50 ppm, and the content of the copper element in the composite material is controlled in the range of 0.01 to 20 ppm, so that not only can the pretreatment on filler powder be avoided, but also alkaline ions in a system can be stabilized, and color darkening and performance damage caused by the bringing of a screw rod or other metal are reduced, therefore the prepared polycarbonate composite material has the advantages that obviously improved impact strength, bending toughness and molding toughness are obtained, the rigidity brought by the fillers can be also considered, and excellent molding use stability and excellent color stability are obtained.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and in particular relates to a polycarbonate composite material with significantly improved impact strength and molding toughness and stable long-term performance. Background technique [0002] Polycarbonate PC has excellent heat resistance and high impact resistance, and is widely used in the field of exterior materials such as electrical / electronic products and automotive parts. In recent years, the thinning of molded articles molded from resin compositions has progressed, and demands for improvement in various physical properties of molded articles have been increasing. [0003] Better rigidity can be obtained by adding fillers in polycarbonate, but the ductility will be greatly reduced. In order to improve the impact strength of materials, there is currently a technology to improve the impact strength of the composition by adding an impact modifier, but it will affect the heat di...

AI Technical Summary

Problems solved by technology

[0003] Better rigidity can be obtained by adding fillers in polycarbonate, but the ductility will be greatly reduced

In order to improve the impact strength of the material, there is currently a technology to improve the impact strength of the composition by adding an impact modifier, but it will affect the heat distortion temperature and flow properties of the product, and there are also technologies through the selection of filler size or surface treatment To improve the impact strength, but the increase is not large, the effect is not obvious

[0004] In addition, the added filler will inevitably bring basic metal ions, the presence of basic metal ions will not only affect the color of the filler, but also cause a sudden drop in molding toughness and a decrease in molding stability in PC products

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