Low/high-heat-resistant ABS resin and preparation method thereof

Abstract

The invention relates to low / high-heat-resistant ABS resin and a preparation method thereof and belongs to a high molecular material modification processing technology. The invention provides the preparation method of the low / high-heat-resistant ABS resin, which enables ABS resin to have high heat resistance and simultaneously keeps favorable mechanical properties. The low / high-heat-resistant ABS resin comprises the following components in parts by mass: 50-85 parts of ABS resin, 5-20 parts of SBS thermoplastic elastomer, 10-45 parts of a styrene-nitrogen-phenyl maleimide copolymer and 0.2-0.4 part of an antioxidant. The components are blended and extruded to prepare the modified ABS resin which has high heat resistance and favorable mechanical properties and can be widely used as a material for automobiles and electric products.

Description

1. Technical field: [0001] The invention relates to a preparation method of a modified ABS resin, in particular to a low-high heat-resistant ABS resin. 2. Background technology: [0002] ABS resin (acrylonitrile-styrene-butadiene copolymer) is currently the largest and most widely used polymer, with excellent comprehensive properties, excellent impact strength, good dimensional stability, electrical properties, wear resistance It is widely used in auto parts (dashboards, tool hatches, wheel covers, mirror boxes, etc.), high-strength tools (vacuum cleaners, hair dryers, etc.) , mixers, lawn mowers, etc.), typewriter keyboards, recreational vehicles such as golf carts and jet skis, etc., with the increase in the scope of application, not only ABS resin is required to have good mechanical properties, but also to have certain Some excellent properties, such as: high heat resistance, flame retardancy, transparency, high elastic modulus and other characteristics. [0003] Due to...

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Problems solved by technology

[0004] The following two modification methods are usually used to improve the heat resistance of ABS resin. One is to add inorganic rigid thermal fillers to ABS resin by filling modification method, which can improve the heat resistance of ABS resin. The commonly used fillers are mica powder, Talc powder, glass fiber, and glass microspheres, etc., filled with modified ABS resin have the disadvantages of decreased impact strength and rough surface while increasing the heat distortion temperature, which cannot meet the application requirements of heat-resistant ABS resin.

[0005] The other is the blending modification of SA nitrogen resin to achieve the purpose of improving the heat resistance of ABS resin. This method is to increase the content of acrylonitrile in the resin system to improve the heat resistance of the resin, although the mechanical properties of the resin are guaranteed. , but the increased heat deflection temperature is not ideal

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