Rubber reforming styrene resin and molded product made by the rubber reforming styrene resin

Abstract

The invention relates to rubber reforming styrene resin and a molded product made by the rubber reforming styrene resin, and the rubber reforming styrene resin comprises: 50% in weight-90% in weight of continuous phase formed by copolymer; and 10% in weight-50% in weight of dispersion phase formed by rubber particles, wherein the copolymers comprise 50% in weight-90% in weight of styrene monomeric units and 10%-50% in weight of acrylonitrile monomeric units; the rubber particle has a non-occlusion structure and an occlusion structure; and total content of dimers or trimers derived from the styrene monomeric units and the acrylonitrile monomeric units of the rubber reforming styrene resin occupies under 5,000 ppm of 100 parts in weight of the rubber reforming styrene resin. The resin has a relatively good processing property, non molding pollution will be generated in making process, and the molded product with relatively good heat resistance and color changing property and machinery property is formed.

Description

technical field [0001] The present invention relates to a material suitable for the production of plastic moldings for electrical equipment, office equipment, automobile parts, household goods, etc., and particularly relates to a rubber-modified styrene-based resin. The present invention also provides a molded article made of the rubber-modified styrenic resin. Background technique [0002] Generally, plastic molded products used for electrical equipment and household goods contain mostly rubber-modified styrene-based resin, polycarbonate resin (Polycarbonate Resin) and the like. The rubber-modified styrene resin, such as acrylonitrile-butadiene-styrene resin (ABS), has high surface hardness, good chemical resistance, good electrical properties and easy molding. characteristics, and gradually been widely used in various plastic molded products. [0003] The rubber-modified styrene-based resin can be manufactured into a molded product through extrusion molding (extrusionmol...

AI Technical Summary

Problems solved by technology

In recent years, the application of rubber-modified styrene-based resins in extrusion molding has further required an increase in production capacity. Therefore, the processing properties of rubber-modified styrene-based resins (such as fluidity or die expansion) etc.) are even more demanding. For example, if the fluidity in the molten state is poor, it will not be able to fill the entire mold, resulting in problems such as poor appearance and size of the molded product. Or, if the fluidity in the molten state is too good, it is easy to go from The joints of the mold leak out, which causes problems such as burrs on the molded product. For example, if the expansion of the die is too large, it will easily cause the melt of the molded product to break, and if it is too small, it will easily cause the surface of the molded product to be rough and corrugated.

In addition to the requirements on the processing properties of rubber-modified styrene resin, at the same time, the molded products formed from it must meet the mechanical properties required by the industry, such as impact resistance, but often the improvement of processing properties is not It will cause poor mechanical properties, so how to achieve a balance between processing properties and mechanical properties is an important topic that has been widely studied

In addition to the above-mentioned problems, the current rubber-modified styrene-based resin is easy to make the mold stained with stains and form mold stains during the processing method.

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