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A kind of thermoplastic composition and its preparation method and application

A thermoplastic composition and copolymer technology, applied in the field of thermoplastic blends, can solve the problems of poor surface scratch resistance, poor impact resistance, insufficient heat resistance, etc., and achieve the effect of excellent heat resistance

Active Publication Date: 2012-02-08
WUHAN JINFA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymethyl methacrylate (MMA) is a transparent amorphous polymer with high surface hardness and good gloss, but poor impact resistance; acrylonitrile-butadiene-styrene terpolymer (ABS) has excellent chemical resistance, High impact resistance, easy to process, but poor surface scratch resistance; polycarbonate (PC) and polycarbonate / acrylonitrile-butadiene-styrene terpolymer alloys have high impact resistance, but surface scratch resistance Poor scratch resistance; acrylonitrile-butadiene-styrene terpolymer / polymethyl methacrylate alloy has high surface hardness and good gloss, but insufficient heat resistance
The lack of the above materials limits its application in increasingly large-scale flat-panel TVs, monitors, audio, etc.

Method used

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  • A kind of thermoplastic composition and its preparation method and application
  • A kind of thermoplastic composition and its preparation method and application
  • A kind of thermoplastic composition and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In the following examples and comparative examples, ratios and percentages are expressed by weight.

[0021] A is polymethyl methacrylate, which is a copolymer of methyl methacrylate and methyl acrylate in a ratio of 92:8;

[0022] B1 is styrene-maleic anhydride copolymer, is the copolymer of styrene and maleic anhydride by 91:9 ratio;

[0023] B2 is styrene-maleic anhydride copolymer, is the copolymer of styrene and maleic anhydride by 82:18 ratio;

[0024] C is a rubbery graft copolymer consisting of 44% by weight of shell copolymer (including 51% by weight of methyl methacrylate, 44% by weight of styrene and 5% by weight of n-butyl acrylate) and 55% by weight of The composition of the core layer copolymer (obtained by polymerizing 72 parts by weight of butadiene and 28 parts by weight of styrene).

[0025] After mixing A1, B1, B2, and C, they are extruded through an extruder, cooled, and granulated to obtain a thermoplastic blend with high heat resistance, high glo...

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Abstract

The invention discloses a thermoplastic composition, its preparation method and application. The thermoplastic composition is composed of the following components in weight percentage: 60-90% of polymethyl methacrylate and styrene-maleic anhydride copolymer blend; 10-40% of rubbery graft copolymer; The blend of methyl acrylate and styrene-maleic anhydride copolymer is composed of 30-70% by weight of polymethyl methacrylate and 70-30% by weight of styrene-maleic anhydride copolymer. The thermoplastic composition provided by the invention has excellent heat resistance, high gloss and scratch resistance, and can be used to produce high-gloss scratch-resistant and spray-free products such as LCD TV panels and liquid crystal displays by injection molding or rapid cold and hot molding processes Panels, speaker enclosures, etc.

Description

technical field [0001] The present invention relates to a high-gloss scratch-resistant spray-free coating thermoplastic blend based on polymethyl methacrylate and styrene / maleic anhydride copolymer with good heat resistance. Background technique [0002] In recent years, with the increasing environmental protection requirements, the demand for spray-free high-gloss materials is increasing. Polymethyl methacrylate (MMA) is a transparent amorphous polymer with high surface hardness and good gloss, but poor impact resistance; acrylonitrile-butadiene-styrene terpolymer (ABS) has excellent chemical resistance, High impact resistance, easy to process, but poor surface scratch resistance; polycarbonate (PC) and polycarbonate / acrylonitrile-butadiene-styrene terpolymer alloys have high impact resistance, but surface scratch resistance Poor scratch resistance; acrylonitrile-butadiene-styrene terpolymer / polymethyl methacrylate alloy has high surface hardness and good gloss, but insuff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L35/06C08L51/04
Inventor 程庆吴晓辉王亮叶晓光宁方林许晶玮
Owner WUHAN JINFA TECH CO LTD