啮合同向双螺杆挤出机偏心六棱柱元件混合性能的研究  

Mixing Performance of Eccentric Polygon Elements in Intermeshing Corotating Twin-screw Extruders

作　　者：杨高品[1] 陈涛[1] 谢林生[1] 马玉录[1] YANG Gaopin CHEN Tao XIE Linsheng MA Yulu(Engineering Center of Efficient Green Process Equipment and Energy Conservation of Ministry of Education, East China University of Science and Technology, Shanghai 200237, Chin)

机构地区：[1]华东理工大学,绿色高效过程装备与节能教育部工程研究中心,上海200237

出　　处：《中国塑料》2016年第10期60-67,共8页China Plastics

基　　金：国家自然科学基金(51273065)

摘　　要：提出了一种新型的偏心六棱柱元件,并对其混合流场进行三维非牛顿等温模拟;比较了六棱柱元件和偏心六棱柱元件的混合性能,同时通过添加10%(质量分数,下同)玻璃纤维增强的聚碳酸酯共混改性实验,对两者的混合效果进行了评估和表征。结果表明,由于流场中引入了明显的拉伸流动,偏心六棱柱的分散和分布混合能力优于六棱柱元件,所制备的玻璃纤维增强材料的韧性提升超过40%,并且热变形温度提高了7℃。Based on the self-designed eccentric polygon element, three-dimensional non-Newtonian isothermal flow field simulation was performed by means of POLYFLOW software to characterize the mixing performance of polygon and eccentric polygon elements. It was found that the dispersive and distributive mixing capabilities of eccentric polygon elements are better than those of polygon elements. Furthermore, the extension flow was also introduced into the flow field of eccentric polygon elements. A compounding experiment for the reinforced polycarbonate with 10 wt% of glass fiber was conducted to evaluate and characterize the mixing performance of polygon and eccentric polygon elements. The results indicated that the composite prepared by the eccentric polygon elements exhibited a better mechanical property and a higher heat deformation temperature than that prepared by polygon elements.

关 键 词：双螺杆挤出机 啮合同向 偏心六棱柱元件 数值模拟 混合特性 

分 类 号：TQ320.52[化学工程—合成树脂塑料工业]