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Modified ASA material for vehicles, and preparation method thereof

An ASA resin and modification technology, which is applied in the field of low precipitation and high toughness automotive modified ASA materials and its preparation, can solve the problems of unqualified photoaging, achieve improved weather resistance and mechanical properties, low cost, and easy processing Effect

Pending Publication Date: 2020-03-24
中广核俊尔(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a modified ASA material for vehicles with low precipitation and high toughness and its preparation method, so as to solve the problem of unqualified photoaging caused by the precipitation of low molecular substances in the prior art

Method used

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  • Modified ASA material for vehicles, and preparation method thereof
  • Modified ASA material for vehicles, and preparation method thereof
  • Modified ASA material for vehicles, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0028] Add ASA resin, SAN resin, chain extender and various additives to the high-speed mixer and stir for 3 minutes at high speed, then add it to the main feeder of the extruder, and finally enter the twin-screw extruder for basic granulation. The temperature distribution of the extruder is as follows: from the feed section to the machine head: 200°C, 220°C, 230°C, 240°C, 235°C, 235°C, 240°C, 240°C Die head: 235°C, the material is extruded Finally, it is water-cooled, cut into pellets, and then packed. The pellets were dried in a blast oven at 95°C for 4 hours, and then test specimens were prepared by an injection molding machine.

[0029] See Table 1 for the parts by weight of the raw materials in Examples 1 to 5, and see Table 2 for the test results.

[0030] Raw material parts by weight of table 1 embodiment 1~5

[0031]

[0032]

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PUM

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Abstract

The invention provides a modified ASA material for vehicles. The modified ASA material comprises the following components in percentage by mass: 30-47% of an ASA resin, 50-67% of an SAN resin, 0.5-1%of a cross-linking agent, 0.1-1% of a weather-resistant aid, and 0.1-1% of an antioxidant, wherein the cross-linking agent is an organic peptide cross-linking agent. According to the invention, the cross-linking agent is introduced to initiate the cross-linking reaction of the low-molecular part in the ASA resin, so that easily degraded and precipitated low-molecular substances are changed into difficultly degraded and precipitated high-molecular substances so as to improve the weather resistance and the mechanical properties of the product, and the product is particularly suitable for the field of automobiles; and the production process is simple, the cost is low, and the prepared modified ASA resin is easy to process.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a modified ASA material for vehicles with low precipitation and high toughness and a preparation method thereof. Background technique [0002] ASA resin is a copolymer of acrylic rubber, acrylonitrile and styrene. It is a terpolymer formed by graft copolymerization of styrene, acrylonitrile and acrylic rubber. It has excellent mechanical and physical properties, strong weather resistance and relatively good high temperature resistance. Compared with ABS resin, ASA resin introduces acrylate rubber without double bonds to replace butadiene rubber, so the weather resistance has changed substantially, which is about 10 times higher than ABS. [0003] ASA resin has excellent weather resistance, mechanical strength, heat resistance and high electrical insulation. Products processed with ASA resin do not need surface protection such as spray paint coating and electroplating...

Claims

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Application Information

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IPC IPC(8): C08L25/12C08L51/04C08K5/10
CPCC08L25/12C08L2312/00C08L2201/08C08L51/04C08K5/10
Inventor 刘艺陈晓敏王海华沈岳新杨仓先
Owner 中广核俊尔(上海)新材料有限公司
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