储存条件对珠粒性能的影响第一汽车集团公司夏振佳刘生银消失模铸造法多采用可发性聚苯乙烯珠粒制造模型，珠粒中含５％～７％发泡剂，具有可发性。发泡剂主要成分是戊烷。戊烷沸点低，在储存过程中珠粒中发泡剂逐渐逸失，珠粒发泡能力下降直到失去发泡能力。发泡剂的逸... Storage conditions on the performance of the beads First Automobile Group Xia Zhenjia  Liu Shengyin Lost Foam Casting more use of expandable polystyrene beads manufacturing model, the beads containing 5% to 7% of the foaming agent, with the hair can be sex . The main component of blowing agent is pentane. The boiling point of pentane is low, the foaming agent in the beads gradually loses during storage, and the foaming ability of the beads decreases until the foaming ability is lost. Foaming agent Yi ...