注塑工艺对微发泡PP/云母粉发泡行为影响  

Effect of Injection Processing on PP/Mica Powder Foaming Behavior

作　　者：龚维[1,2,3] 高家诚[1] 何力[3] 朱建华[3] 何颖[2] 郑环[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]重庆大学材料科学与工程学院,重庆400045 [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：《现代塑料加工应用》2009年第6期5-8,共4页Modern Plastics Processing and Applications

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(200722s700812);贵州省教育厅自然科学基金项目(50101050222007)

摘　　要：用正交试验研究了注射温度、注射压力、注射速度和冷却时间对化学发泡法制备聚丙烯(PP)/云母粉发泡材料的泡孔平均直径和泡孔密度的影响。结果表明,在PP中添加云母粉后,注射压力对发泡PP/云母粉材料的结构参数影响最大,其次为注射温度;较理想的工艺参数为注射温度170℃、注射压力50 MPa、注射速度95%、冷却时间30 s。The effect of injection temperature, injection pressure, injection speeds, and cooling time on cell size, cell density of foamed PP/mica powder was studied through orthogonal. The results show that the injection pressure has the most important effect on foamed PP/mica powder structural parameters after adding mica in PP, followed by injection temperature. The injection temperature, injection pressure, injection speeds, and cooling time are 170 ℃, 50 MPa, 95% and 30 s separately. They are the optimal process conditions.

关 键 词：聚丙烯 云母 微发泡材料 注塑工艺参数 发泡行为 

分 类 号：TQ320.662[化学工程—合成树脂塑料工业]