Method and manufacturing carbon-containing modified polystyrene resin foamed particles, and a method of manufacturing the same carbon-containing modified polystyrene resin foamed article

摘要

PROBLEM TO BE SOLVED: To provide a carbon-containing modified polystyrene resin foam molded article which has heat resistance and blackness improved more than those of a conventional carbon-containing modified polystyrene resin foam molded article.;SOLUTION: Carbon-containing modified polystyrene resin foam particles are obtained by preliminary foaming, to a bulk foaming multiple of 20-45 times, carbon-containing expandable modified polystyrene resin particles obtained by impregnating a blowing agent into carbon-including modified polystyrene resin particles including 100-400 pts.mass of a polystyrene resin per 100 pts.mass of a carbon-including polypropylene resin. The film thickness of the most superficial layer of the foam particles, calculated from an image observed with a scanning electron microscope, is 5-25 μm. The average bubble diameter of air bubbles contacting to the most superficial layer of the foam particles calculated from an image observed with a scanning electron microscope, is 100-600 μm.;COPYRIGHT: (C)2011,JPO&INPIT