微孔发泡注塑成型制品表面粗糙度与表面气泡破裂形变行为的关系  

Relationship Between Surface Roughness and Surface Bubble Breakup Behavior of Microcellular Foam Injection Molding

作　　者：胡彪[1] 胡广洪[1] 

机构地区：[1]上海交通大学模具CAD国家工程研究中心,上海200030

出　　处：《上海交通大学学报》2016年第8期1300-1306,共7页Journal of Shanghai Jiaotong University

基　　金：上海市自然科学基金(13ZR1420500)资助

摘　　要：基于泰勒泡孔形变理论,结合微孔发泡注塑成型工艺,分析了微孔发泡注塑成型过程中气泡的形变及临界破裂条件,并以聚丙烯和氮气为研究对象,设计微孔发泡注塑成型正交实验,对临界破裂泡孔尺寸与表面粗糙度之间的关系进行了分析.结果表明,临界破裂泡孔尺寸与表面粗糙度在同一数量级并呈正相关关系,因此可以通过调节工艺控制临界破裂条件的泡孔尺寸,达到降低表面粗糙度的目的.The bubble critical breakup size of microcellular foam injection molding part surface was analyzed based on the Taylor droplet deformation theory and the relationship between bubble critical breakup size and surface roughness was illustrated.Analysis results show that the bubble critical breakup size is in the same order of magnitude as the surface roughness value.And they are positively correlated.Thus controlling the bubble critical breakup size can be an efficient way to reduce the surface roughness,and can be a theoretical guidance of improving surface quality by changing the processing parameters.

关 键 词：微孔发泡注塑成型 泰勒泡孔形变理论 临界破裂泡孔尺寸 表面粗糙度 

分 类 号：TQ320.66[化学工程—合成树脂塑料工业]