碳酸钙晶须对微发泡聚丙烯材料发泡行为的影响  

Effect of Calcium Carbonate Whisker on Foaming Behavior of Polypropylene Composite

作　　者：龚维[1,2,3] 鲍安坤[1] 李宗华[1] 孙林浩[1] 何力[3] 郑环[1] 

机构地区：[1]贵州师范大学材料与建筑工程学院,贵州贵阳550014 [2]重庆大学材料科学与工程学院,重庆400030 [3]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》2010年第3期79-81,117,共4页Plastics

基　　金：贵州省自然基金项目(黔科合J字[2009]2020号);国家973前期项目(2007CB616912);贵州省科学技术基金项目(黔科合J字[2008]2005号)

摘　　要：通过把改性碳酸钙晶须以不同含量加入到聚丙烯中,在二次开模条件下制备微发泡PP/碳酸钙晶须复合材料,分析不同含量的碳酸钙晶须对微发泡复合材料发泡行为的影响。结果表明:当碳酸钙晶须质量含量为10%时,微发泡复合材料的泡孔分散度为6.25、泡孔直径25.27μm左右、泡孔密度为4.25×105个/cm3,具有理想的发泡效果。The calcium carbonate whisker was modified by silane coupling agent,which was added into polypropylene with different content. Microcellular foam polypropylene/calcium carbonate whisker composites was prepared by twice-open mold. The effects of different contents of calcium carbonate whisker on foaming behavior were analyzed in microcellular foam composite. The results showed that the content of calcium carbonate whisker was 10 % , the size dispersion was 6.25, cell diameter was 25. 27 μm, cell density was 4. 25 × 10^5 months/cm^3, there was ideal foaming effect in microcellular foam composite.

关 键 词：聚丙烯 碳酸钙晶须 二次开模 发泡行为 复合材料 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]