CHINA EVA FOAM is a copolymer of ethylene and vinyl acetate random copolymer, its properties with VA content and change: the VA content of the smaller, the closer its properties of the copolymer PE; content is, the more the properties of the copolymer close to the rubber. For the purposes of plastics, VA content of about 10% to 20%.

CHINA EVA FOAM foam is CHINA EVA FOAM resin as matrix and the inner microporous plastic products, gas makes the existence of CHINA EVA FOAM foam has low density, high specific strength, can absorb the load, to insulation, sound insulation, etc., and therefore widely used in recent In recent years a great development. CHINA EVA FOAM foam nuclear generation method can be divided into physical foaming chemical foaming method, the present study the latter. Since AC is generic organic blowing agent in the hair blowing gas maximum (of 250 ~ 300mlPg), and there is less heat release, dispersion, and the release of nitrogen-based and difficult to escape from the foam body, etc., so with AC as a blowing agent.

AC main decomposition reaction is highly exothermic, the secondary reaction is an endothermic reaction, the reaction temperature as the primary and secondary reaction temperature or less, the foaming aid ZnO added to increase the foaming temperature range , but also suppresses the AC decomposition ZnO secondary reaction, which prevent the formation of isocyanate and ammonia cause corrosion of equipment.