气体辅助微挤出模设计及加工  

Design and Manufacture of Gas-assisted Micro-extrusion Die

作　　者：肖建华[1] 高延峰[1] 陈思维[1] 周友明[1] 

机构地区：[1]南昌航空大学材料学院,江西南昌330063

出　　处：《塑料工业》2016年第8期34-36,共3页China Plastics Industry

基　　金：国家自然科学基金项目(21464010)

摘　　要：在传统挤出成型的基础上,通过添加气体辅助和微挤出成型技术,初步建立模具模型,并通过计算机辅助设计出一套气体辅助微挤出模具,并采用3D打印加工出该模具。结果如下:利用UG软件设计的气体辅助微挤出模中,聚合物熔体在微通道中在气体辅助壁面滑移的条件下进行挤出,有望消除离模胀大和表面张力引起的尺寸变形。On the basis of traditional extrusion, gas-assisted extrusion and micro-extrusion technology were taken into account to produce precise micro-plastic parts. Micro-extrusion die model was established for polymer melt flow through the micro-channel, a new gas-assisted micro-extrusion die was designed by computer-aided design, and three dimensional printing was used to manufacture the die. The results show that a gas-assisted micro-extrusion die was successful designed by using UG software. Main features of this die can be described as follows ： polymer melt flows through the micro-channel in the condition of wall slip by gas- assisted, which could help to eliminate the size deformation originating from die swell and surface tension.

关 键 词：气体辅助 微挤出模 模具设计 3D打印 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]