交联对PP／TPI超临界二氧化碳发泡性能的影响  

Ingluence of Crosslinking on Super Critical CO_2 Foaming Properties of Polypropylene/Trans-1,4-Polyisoprene Blends

作　　者：康菲菲[1] 高长云[1] 冷秀江 孟倩倩[1] 辛振祥[1] 

机构地区：[1]青岛科技大学,橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东青岛266042 [2]青岛博宁福田智能交通科技发展有限公司,山东青岛266109

出　　处：《塑料》2017年第2期118-120,共3页Plastics

摘　　要：采用熔融共混的方法制备聚丙烯(PP)/反式-1,4-聚异戊二烯(TPI)共混材料,并加入过氧化二异丙苯(DCP)使其形成一定程度的交联结构,然后用超临界CO2方法对其进行发泡。通过差示扫描量热分析(DSC)对共混材料发泡前后的热性能进行了研究;通过扫描电子显微镜(SEM)等测试手段观测了发泡材料的泡孔结构。研究表明:交联PP/TPI发泡材料的发泡倍率、泡孔尺寸降低,泡孔密度增大。Polypropylene/trans-1 ,4-polyisoprene （PP/TPI） blends with dicumyl peroxide （DCP） to get crosslinking structure were prepared by melt blending method. PP/TPI compositions were foamed blowing with supercritical COz. The thermal performances of unfoamed blends and foams were studied by differential Scanning calorimetry （ DSC）. Foamed cell structures were observed by scanning electron microscopy （ SEM）. The results showed that the crosslinking PP/TPI foams had lower foaming ratio and the average cell size and larger cell density.

关 键 词：聚丙烯 反式-1 4-聚异戊二烯 超临界CO2 发泡 交联 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]