Polycarbonate resin composition, polycarbonate resin molded article, and manufacturing method therefor

Abstract

Provided is a polycarbonate resin composition that contains (D) (D-1) 0.005 to 1.5 mass parts of a pearlescent particulate having a mean particle diameter of at least 10 [mu]m and less than 60 [mu]m, (D-2) 0.005 to 5 mass parts of a pearlescent particulate having a mean particle diameter between 60 [mu]m and 300 [mu]m, and (E) 0.05 to 0.4 mass parts of a titanium oxide having a mean particle diameter between 0.05 [mu]m and 3 [mu]m, per 100 mass parts of a glass-fiber-containing resin component that comprises (A) 60% to 90% by mass of an aromatic polycarbonate resin, (B) 5% to 20% by mass of a glass fiber having an index of refraction that differs by at most 0.02 from that of the aforementioned aromatic polycarbonate resin, and (C) 5% to 25% by mass of a polymethylmethacrylate resin. Also provided are a resin molded article made by molding the provided polycarbonate resin composition and a method for manufacturing said resin molded article. The provided polycarbonate resin composition yields a molded article that has a good metallic or sparkling appearance, reduced weld-line visibility, and no visible lightness difference between the two sides of weld lines. The polycarbonate resin composition is also highly heat-resistant and has excellent mechanical properties.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition, a polycarbonate resin molded article formed using the same, and a method for producing the resin molded article. More specifically, it relates to a polycarbonate resin combination that utilizes the heat resistance and mechanical properties of polycarbonate, and is suitable for the field of structural parts that require design, such as TVs, refrigerators, and vacuum cleaners, which have a metallic appearance or a galaxy-like appearance. A polycarbonate resin molded article formed by molding the resin composition, and a method for manufacturing the resin molded article. Background technique [0002] Polycarbonate resin molded products are excellent in transparency, heat resistance, and mechanical properties, so they are widely used as industrial transparent materials in the electrical and electronic fields, mechanical fields, automotive fields, etc., and are also widely used as Optical ...

AI Technical Summary

Problems solved by technology

[0008] However, needless to say, suppressing the occurrence of fusion lines, from the viewpoint of reducing the lightness difference between the left and right portions bounded by the fusion lines, as in Patent Documents 4 and 5, it is impossible to obtain a product that satisfies the requirements only by relying on the shape of the glossy particles themselves.

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