EVA FOAM MANUFACTURER of ethylene and vinyl acetate random copolymer with VA content of the nature of the change : the VA content of the smaller , the closer its properties of the copolymer PE; content is, the copolymer nature closer rubber . For the purposes of plastics , VA content of about 10% to 20% [ 1 ] .

EVA FOAM MANUFACTURER foam is EVA FOAM MANUFACTURER resin matrix while the interior has a microporous plastic products, gas makes the existence of EVA FOAM MANUFACTURER foam has low density , high specific strength , can absorb the load , to insulation, sound insulation , etc. so widely used, has been greatly developed in recent years [ 2 ] . EVA FOAM MANUFACTURER bubble nucleation 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 .