Ultrahigh heat-resistant and flame-retardant ABS (acrylonitrile butadiene styrene) composition and preparation method thereof

Abstract

The invention discloses an ultrahigh heat-resistant and flame-retardant ABS (acrylonitrile butadiene styrene) composition and a preparation method thereof. The ultrahigh heat-resistant and flame-retardant ABS composition comprises the following component in parts by weight: 100 parts of ABS resin, 10-25 parts of environment-friendly bromine containing flame retardant, 2-8 parts of flame-retardantsynergist, 5-30 parts of heat-resistant modifier, 0.1-2 parts of dispersant, 1-10 parts of toughening agent, 0.1-1 parts of antioxidant, 0.1-1 parts of light stabilizing agent and 0.5-5 parts of processing adjuvant. The preparation method comprises the following steps of fully mixing the components in parts by weight; sending the mixture to a double-screw extruder; performing mixed smelting; extruding and granulating; drawing into strips; cooling; cutting granules; and packaging to obtain a finished product. The ultrahigh heat-resistant and flame-retardant ABS composition is high in heat resistance, low in cost, low in smoke density, good in flame-retardant effect and high in stability; mechanical properties of the ultrahigh heat-resistant and flame-retardant ABS composition are kept in an optimal balance; and the ultrahigh heat-resistant and flame-retardant ABS composition can be extensively applied to storage batteries, power supplies, rowed sockets, decorative lights, electric cookers, microwave ovens and other flame-retardant and heat-resistant apparatuses and products.

Description

technical field [0001] The invention relates to an ABS composition, in particular to an ultra-high heat-resistant and flame-retardant ABS composition and a preparation method thereof. Background technique [0002] ABS resin is a terpolymer composed of styrene, butadiene and acrylonitrile. It combines the high fluidity of styrene, the rubber toughness of butadiene and the chemical resistance of acrylonitrile. It has excellent processing performance, Low temperature resistance, electrical insulation, chemical corrosion resistance, high gloss and excellent electroplating performance, as well as good creep resistance, high dimensional stability, small molding shrinkage, etc., are widely used in military industry, automobiles, electronic appliances, etc. The field of application is very wide. But on the one hand, the oxygen index of ABS resin is only 18, which is a flammable material; on the other hand, the heat resistance of ABS resin itself is not high, and the general heat di...

AI Technical Summary

Problems solved by technology

[0003] At present, flame retardant modification is mostly achieved by adding flame retardants, and the sea-island structure of ABS resin itself, adding flame retardants will further reduce its heat-resistant temperature

At present, most of the modification methods commonly used to improve the heat resistance of flame-retardant ABS are realized by adding heat-resistant modifiers. The material and its preparation method. The material includes ABS, SAN, flame retardant, heat-resistant agent, compatibilizer, antioxidant and lubricant. The method has the advantages of simultaneously achieving high heat resistance, high flame retardancy and high gloss , but this method is very limited in improving the heat resistance of flame-retardant ABS, and the heat distortion temperature will not exceed 90°C. At the same time, the addition of heat-resistant agents has a great impact on the mechanical properties, especia