Preparation method of scratch-resistant lacquer-free ABS moulding composition with high glaze

A molding composition and anti-scratch technology, which is applied in the field of preparation of high-gloss anti-scratch paint-free ABS molding composition, which can solve the problems of low application flexibility, limited surface gloss improvement, material surface gloss, hardness research, etc. problem, to achieve the effect of low cost, good surface gloss and good scratch resistance

Inactive Publication Date: 2009-09-16
四川长虹模塑科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single ABS resin system is difficult to meet the requirements at the same time due to the low rubber phase content and small particle size required for high surface gloss and the high rubber phase content and large particle size required for high impact toughness, and the general surface hardness of ABS products Low, poor scratch resistance, unable to meet special application requirements
The traditional solution is to spray paint on the surface of ordinary injection molded products to meet the requirements for surface gloss and scratch resistance. However, spray paint not only increases the processing steps, but also increases the cost of materials, and the organic solvent used in spray paint pollutes the environment. , and cause harm to the operators. At the same time, the thermosetting surface coating also has a negative impact on the recycling of thermoplastic products.
[0004] CN101058623 discloses a preparation method of high-gloss injection molding grade ABS polymer based on continuous bulk method. By improving the synthesis process, different rubber particle sizes and distributions can be obtained by reacting under specific conditions, and high-gloss injection molding with good comprehensive performance can be obtained. Grade ABS polymer, due to starting from the front en

Method used

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  • Preparation method of scratch-resistant lacquer-free ABS moulding composition with high glaze

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: 40 parts of ABS with a rubber phase content of 25%, an average rubber phase particle size of 150 nm, and a melt index of 1.8, and 40 parts of ABS with a rubber phase content of 35%, an average rubber phase particle size of 450 nm, and a melt index of 1.2 ABS, 20 parts of SAN with a melt index of 4.2, 4 parts of high-pigment carbon black masterbatch and 0.1 part of antioxidant are mixed, melted and extruded into pellets by twin-screw extruder, and the extruded pellets are made by injection molding Samples for relevant performance tests.

Embodiment 2

[0026] Example 2: 30 parts of ABS with a rubber phase content of 20%, an average rubber phase particle size of 130 nm, and a melt index of 2.5, and 50 parts of ABS with a rubber phase content of 35%, an average rubber phase particle size of 400 nm, and a melt index of 1.2 ABS, 20 parts of PMMA with a melt index of 3.6, 4 parts of high-pigment carbon black masterbatch and 0.5 parts of antioxidant are mixed, melted and extruded into pellets by twin-screw extruder, and the extruded pellets are made by injection molding Samples for relevant performance tests.

Embodiment 3

[0027] Example 3: 30 parts of ABS with a rubber phase content of 20%, an average rubber phase particle size of 130 nm, and a melt index of 2.5, and 30 parts of ABS with a rubber phase content of 35%, an average rubber phase particle size of 450 nm, and a melt index of 1.2 ABS, 40 parts of SAN with a melt index of 3.6, 5 parts of medium pigment carbon black masterbatch and 0.3 parts of antioxidant are mixed, melted and extruded to pelletize by twin-screw extruder, and the extruded pellets are made by injection molding Samples for relevant performance tests.

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Abstract

The invention relates to a preparation method of a scratch-resistant lacquer-free ABS moulding composition with high glaze. The moulding composition comprises at least two acrylonitrile-butadiene-styrene graft copolymers with specific rubber phase grain diameter, rubber content and fusant flow characteristic, at least one of acrylonitrile-styrene copolymer with specific fusant flow characteristic, polymethylmethacrylate and polymethylmethacrylate copolymer, and black master batch made from hyperchromatic carbon black. The fusants with different flow characteristics are properly split and enriched by a moulding process such that the moulding article maintains the excellent shock-resistant toughness and has the scratch-resistant surface effect with high glaze without lacquering treatment.

Description

Technical field: [0001] The invention relates to a preparation method of a high-gloss anti-scratch paint-free ABS molding composition, belonging to the field of polymer processing. Background technique: [0002] Acrylonitrile-butadiene-styrene copolymer (ABS, Acrylonitrile-Butadiene-Styrene) has the characteristics of excellent processing fluidity, low temperature impact toughness and excellent dyeability due to the rational use of the advantages of each copolymerization composition. It is the most widely used resin variety in engineering plastics for household appliances. It is mainly used to make the shells and internal structural parts of TVs, computers, refrigerators, audio and video recorders, air conditioners, vacuum cleaners, telephones, electronic pianos and other small household appliances. By changing the ratio of the three components of ABS, the polymerization method, the particle size of the rubber phase and other parameters, a series of ABS varieties with differ...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L25/12C08L33/12C08L25/14
Inventor 邹华维葛亚宁胥邦君宋宏春刘鹏波梁梅范萍程明
Owner 四川长虹模塑科技有限公司
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