EXPANDABLE POLYSTYRENE BEAD INCLUDING PLATE-SHAPED TALC COATED BY RESIN AND PRODUCTION METHOD THEREOF

摘要

A foaming polystyrene bead, a method for preparing the polystyrene bead, and a polystyrene foam prepared by foaming the polystyrene bead are provided to lower heat conduction. A method for preparing a foaming polystyrene bead comprises the steps of mixing plate talc with a resin selected from the group consisting of a polypropylene wax, a polyethylene wax or a low molecular weight polystyrene having a weight average molecular weight of 500-1,000 with a high speed to coat the plate talc with the resin; and adding the coated plate talc to polymerize a polystyrene bead having a diameter of 0.3-3 mm, wherein the content of the plate talc is 0.1-10 parts by weight to the foaming polystyrene bead.