A kind of abs resin composition with high melt strength and good appearance for blow molding

Abstract

The invention discloses an ABS (acrylonitrile butadiene styrene) resin composition with high melt strength and good appearance for blow molding. The ABS resin composition comprises, by weight, 34.1-84.5% of ABS resin, 5-20% of grafting SAN (styrene-acrylonitrile) resin, 5-10% of rubber with terminated polybutadiene, 5-20% of heat-resistant agents and 0.5-1.5% of auxiliaries. The ABS resin composition has the advantages that branched polymers can be formed in an in-situ manner in extruding and granulating procedures, branched molecular chains and molecular chains of matrix resin are easy to entangle with one another, accordingly, the melt strength of ABS resin can be stably and effectively improved, prepared products are good in homogeneity, preparation processes are simple, and the ABS resin composition has low equipment requirements and is quite suitable for producing components such as spoilers of automobiles by means of blow molding.

Description

technical field [0001] The invention belongs to the field of polymer materials, in particular to an ABS resin composition for blow molding with high melt strength and good appearance. Background technique [0002] ABS resin is an acrylonitrile-butadiene-styrene terpolymer with excellent impact strength, good processing performance and chemical stability, easy to process and shape, and excellent comprehensive performance. ABS resin is widely used in the automobile industry, electronic and electrical industry, light industrial appliances, textile and construction industries due to its excellent comprehensive performance. ABS resin can be produced by various molding methods such as extrusion, injection molding, vacuum, blow molding, etc. The tail fins of many cars are blow molded by ABS resin. Blow molding is different from other molding methods, and its effect on the melt of the material The strength requirement is very high. Insufficient melt strength will cause sag phenomen...

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Problems solved by technology

Chinese patent CN105175925 uses graft-modified SAN resin due to the presence of isocyanate small molecules containing multifunctional groups. Cross-linking / branching reactions occur, and cross-linking / branching SAN resins are generated to improve the melt strength of the system. , the ABS resin obtained by the above methods is difficult to achieve the uniformity of the system, and the degree of improvement of the melt strength is also limited.

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