An Investigation into the Influencing Factors for Polymer Melt at the Filling Stage in Micro Injection Molding

摘要：

　　The flow behaviors for polymer melt at the filling stage in micro injection molding are different from those in conventional injection molding due to the miniaturization of plastic parts.This paper focuses on the study of the effects of three main influencing factors,including the microscale viscosity and wall slip,on melt filling flow in microscale neglected those in conventional injection molding process.The theoretical models and the interrelation of these factors in microscale channels were constructed by means of the model correction method.Then,the micro melt flow behaviors were investigated with comparisons of the available experimental data.The results indicate that the dimensions affect the shear rates and viscous dissipation,which in turn affects the apparent viscosity.Finally,the conclusion is that the melt flow behaviors in microchannels are different from those in macrochannels owing to these significant influencing factors.

关键词： Micro injection molding Filling stage Microscale effect Microscale viscosity Wall slip

作者: Jian Zhuang Daming Wu Yajun Zhang Lin Wang Xiongwei Wang Ying He Wei Hu

作者单位: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, China Patent Examination Cooperation Center of The Patent Office, SIPO, Beijing, 100083, China Chinese Academy of Agriculture Mechanization Sciences, Beijing 100083, China

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）