聚丙烯旋转成型用浆液料气泡效应的研究  

Bubble Effect in Aqueous Slurry for PP for Rotational Moulding

作　　者：王晓[1] 季尧岽[1] 许家瑞 

机构地区：[1]中山大学化学与化工学院材料科学研究所,聚合物复合材料及功能材料教育部重点实验室,广东广州510275

出　　处：《中国塑料》2003年第2期63-68,共6页China Plastics

基　　金：国家自然科学基金资助项目 ( 5 0 0 730 30 );中山大学创新化学实验研究基金资助项目

摘　　要：研究了以粉状聚丙烯为原料、以聚乙烯醇 (PVA )为稳定剂的旋转成型浆液料中的气泡效应。实验结果表明 ,浆液的t1/2 分层时间会随着浸渍时间的延长而减小 ,t1/4 分层时间会随着浸渍时间的延长而增大 ,并分别趋于稳定值。这分别是由于浆液中粉料颗粒间和颗粒内的气泡效应所引起的。本研究结果给出了检测浆液中气泡的存在和生成量的方法 。Bubble effect in aqueous slurry of powder polypropylene (PP) using poly(vinyl alcohol) (PVA) as the stabilizer which is used as a sort of raw materials in rotational moulding has been investigated.The experimental results show that the separating time t 1/2 of the slurry decreases with the prolongation of the soaking time of the particles of powder PP,on the contrary,the separating time t 1/4 of the slurry increases and that both the separating time t 1/2 and t 1/4 tends to become stable constants respectively if the soaking time is enough.This is caused by the bubble effects both among and in the particles in the slurry.As a result,a method of determining the bubbles in the slurry has been developed and the technique to remove the bubbles in the slurry has been obtained.

关 键 词：聚丙烯 旋转成型 浆液料 气泡效应 研究 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TQ320.669