聚丙烯发泡体系中当量泡孔数对膨胀率的影响  

The Effect of the Normal Cell Number on Expansion Ratio in PP Foaming System

作　　者：王喜顺[1] 彭伟乐[1] 张奕[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,塑料橡胶装备及智能化研究室,广东广州510640

出　　处：《塑料》2009年第2期70-74,共5页Plastics

基　　金：国家自然科学基金(NNSF10172074/A020205);广东省科技攻关计划项目(2006B12401005);广东省教育厅产学研结合项目(2007B090400013)

摘　　要：以聚丙烯发泡体系为研究对象,引入当量泡孔数的概念,从当量泡孔数的角度解释膨胀率的变化。研究表明:利用当量泡孔数能比较好地对膨胀率变化作出解释,并发现膨胀率与泡孔面密度、平均直径等微观量存在着一定的关系,从而使通过控制膨胀率来最终控制泡孔形态的目的成为可能。Taking PP foaming system as an example, the normal cell number was introduced. The variation of expansion ratio was analyzed with the normal cell number. It was showed that the normal cell number could explain the variation of expansion ratio well,and it was found there existed a certain relationship between expansion ratio and foam surface density, average diameter,etc,which made it possible to control the cell morphology through controlling the expansion ratio.

关 键 词：聚丙烯 发泡体系 膨胀率 泡孔 当量泡孔数 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]