METHOD FOR MINIMIZING THE DEFORMED BEADS DURING PRODUCING EXPANDABLE POLYSTYRENE BEADS CONTAINING GRAPHITE

摘要

PURPOSE: A polymerization method of expandable polystyrene particles is provided to minimize modified particles generated upon seed polymerization after extrusion, and to be able to manufacture expandable polystyrene particles having high yield, and excellent appearance quality. CONSTITUTION: A polymerization method of expandable polystyrene particles comprises: a step of obtain pellets of suspendable and uniform pellets by mix-extruding graphite to styrene resin; a step of maintaining dispersion by putting the pellets together with water and dispersant into a reactor; and a step of dissolving initiator, and flame retardant into a styrene monomer, seed-polymering by continuously adding into the reactor, while emulsifying with water by using surfactant, and impregnating by putting foaming agent in.