硫酸镁晶须对微发泡PP复合材料发泡行为的影响  

Effect of Magnesium Sulfate Whisker on Foaming Behavior of Polypropylene Materials

作　　者：李宗华[1] 龚维[1] 孙林浩[1] 鲍安坤[1] 何颖[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

出　　处：《现代塑料加工应用》2010年第4期41-44,共4页Modern Plastics Processing and Applications

基　　金：贵州师范大学学生科研基金项目;贵州省自然基金项目黔科合J字[2009](2020号)

摘　　要：以不同含量的改性的碱式硫酸镁(MgSO4)晶须加入到聚丙烯(PP)中,在二次开模条件下制备微发泡PP/硫酸镁晶须复合材料,分析了不同含量的硫酸镁晶须对微发泡复合材料发泡行为的影响规律。结果表明,随晶须含量的增加,泡孔平均直径逐渐减小,泡孔密度逐渐增加,晶须质量分数为25%时泡孔直径为26.79μm,泡孔密度达到2.33×105个/cm3,具有理想的发泡效果。The modified basic magnesium sulfate （MgSO4） whisker was added into polypropylene with different content. The microcellular foam PP/ MgSO4 whisker composites was made under the condition of twice-open mold. The effect rule of content of MgSO4 whisker on foaming behavior of microcellular foam composites was analyzed. The results show that with the increase of whisker content, cell diameter decreases gradually, cell density increases gradually. The cell diameter is 26.79 μm and cell density is 2.33 × 10^5 months/ cm^3 when the content of whisker is 25% ;there is ideal foaming effects in microcellular foam composites.

关 键 词：聚丙烯 硫酸镁晶须 微发泡 发泡行为 

分 类 号：TQ328.9[化学工程—合成树脂塑料工业]