HEAT-RESISTANT ABS RESIN COMPOSITION FORMED BY BLOW MOLDING AND PREPARATION METHOD THEREFOR

摘要

The present invention relates to a heat-resistant ABS resin composition formed by blow molding and a preparation method therefor. The composition comprises styrene resin composition A in 100 parts by weight and a heat-resistant agent B in 20 to 40 parts by weight, the heat-resistant agent B being N-phenylmaleimide-α-methylstyrene-acrylonitrile-styrene quadripolymer. The preparation method for the ABS resin composition comprises the following steps: weighing the components in parts by weight; thoroughly mixing the components in a high-speed mixer, to obtain a mixture; the mixture entering a double-screw extruder from a main feed port, and undergoing melt extrusion, cooling, drying, and dicing, to obtain the ABS resin composition. A product prepared by blow molding in the present invention has desirable surface quality and heat-resistant performance, the vicat softening temperature reaches above 110°C, and therefore, the product can meet the heat-resistance requirement of the paint-spraying post-processing technique for auto parts and can be used in a harsh environment; moreover, the product prepared by blow molding is highly impact-resistant.