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Weather-resistant low-gloss high-fluidity polycarbonate composition

A polycarbonate and low-gloss technology, applied in the field of polycarbonate compositions, can solve the problems of unfavorable material molding and processing, reduce the gloss of PC compositions, increase the melt viscosity of compositions, etc., and achieve broad market application prospects, low Gloss, high flow effect

Inactive Publication Date: 2011-07-06
SHANGHAI KINGFA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above methods can effectively reduce the gloss of the PC composition, the disadvantage is that the melt viscosity of the composition is increased, which is very unfavorable to the molding process of the material.

Method used

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Examples

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Embodiment Construction

[0025] How the present invention is implemented is further described in detail, clearly and completely in conjunction with specific embodiments below, and the listed embodiments only further illustrate the present invention, and do not limit the present invention thereby.

[0026] Selected in the embodiment:

[0027] Polycarbonate—a linear PC derived from bisphenol A and phosgene, produced and provided by Dow Company, the brand is 300-10;

[0028] Styrene-based resin—ABS made by bulk polymerization, produced and provided by Shanghai Gaoqiao Petrochemical Company, the brand is 3453;

[0029] Ethylene-acrylate copolymer elastomer-EMA is produced and provided by DuPont Company, the content of methacrylate is 24wt%, and the brand is 1224AC;

[0030] The matting agent is a gelled styrene-acrylonitrile copolymer, GE company, brand BMAT;

[0031] Thermoplastic polyester-PBT is produced and provided by BASF Company, and the brand is 4500;

[0032] Ultraviolet light absorber-UVA is ...

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Abstract

The invention discloses a weather-resistant low-gloss high-fluidity polycarbonate composition, which consists of a main material and an aid, wherein the main material comprises the following components in percentage by weight: 40 to 80 percent of polycarbonate (PC), 10 to 55 percent of styrene base resin, 0 to 4 percent of ethylene-acrylic ester polymer elastomer, 1 to 3 percent of delustering agent and 0 to 3 percent of thermoplastic polyester; and the aid consists of an ultraviolet absorber, a radical scavenger and other aids, wherein the ultraviolet absorber is 0.1 to 1 percent of the total weight of the main material, the radical scavenger is 0.1 to 0.5 percent of the total weight of the main material, and the other aids are 0 to 3 percent of the total weight of the main material. The product has excellent weather resistance, lower gloss and high fluidity, keeps excellent mechanical properties and processability, and can be used for various automotive interior trims.

Description

technical field [0001] The invention relates to a polycarbonate composition, in particular to a polycarbonate composition which can be used for various automotive interior parts and has excellent weather resistance, matte effect and high fluidity. Background technique [0002] Polycarbonate (PC) plastic has the advantages of high heat resistance, good transparency, high gloss, good toughness, etc., but it has poor fluidity and difficult molding; the product is sensitive to gaps and prone to stress cracking; it is not resistant to solvents and is expensive. The above-mentioned shortcomings are usually improved by preparing PC plastic alloys, and PC / ABS plastic alloys are the most common one. PC / ABS alloy has good comprehensive properties such as low melt viscosity, good processability and high impact strength. However, since the butadiene term in ABS contains unsaturated double bonds, the weather resistance of PC / ABS is much worse than that of PC, so improving the weather re...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L55/02C08L23/08C08L67/02C08L25/12
Inventor 李文龙吴增刚田征宇蔡书义孙东海何继辉
Owner SHANGHAI KINGFA SCI & TECH
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