微发泡PP/云母粉复合材料的发泡行为  

Foaming Behavior of Microfoam PP/Mica Composite

作　　者：龚维[1,2] 丁彤[1] 何颖[1] 朱建华[2] 何力[2] 

机构地区：[1]贵州师范大学材料与建筑学院,贵州贵阳550014 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料》2011年第3期45-47,15,共4页Plastics

基　　金：贵州省自然基金(黔科合J字[2009]2020号);国家973前期项目(2007CB616912)

摘　　要：采用化学发泡法,以异相成核理论为基础,研究不同含量云母粉对PP/云母粉复合材料发泡行为的影响,制备了微发泡PP/云母粉复合材料。结果表明:随云母粉含量的增加,泡孔平均直径逐渐减小,泡孔密度逐渐增加。云母粉质量含量为8%时,可得到泡孔直径22.1μm左右、泡孔密度接近2.7×107的微发泡聚丙烯材料,可以作为聚丙烯发泡的良好发泡体系。Effect of different content mica on foaming behavior of microfoam PP/Mica composite was studied by heterogeneous nucleation theory. Mierofoam PP/Miea composite was prepared. The results indicated that with the increasing of mica content, cell diameter decreased gradually, cell density increased gradually. The polypropylene foam with cells about 22.1 μm in size and cell density of near 2.7 × 10^7cells/cm3 was produced by the use of PP/mica foaming system with 8wt % content,there was ideal foaming system in PP composite.

关 键 词：聚丙烯 发泡体系 泡孔平均直径 复合材料 发泡行为 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]