EXPANDABLE POLYSTYRENE BEAD COMPRISING SILICONE AND EXPANDED VERMICULITE, AND METHOD FOR PREPARING THE SAME

摘要

This invention relates to a flame retardant expandable polystyrene beads , and their manufacture . The present invention provides an expandable polystyrene beads that are dispersed in the styrene -based polymer flame retardant , the flame retardant is characterized in that it comprises a silicon-based powder and expanded vermiculite powder . Are expandable polystyrene beads of the present invention exhibits excellent flame retardancy effect , without lowering the physical properties such as foaming not .