文献类型：期刊文献

中文题名：螺杆结构及转速对玻璃纤维增强PA66复合材料力学及流变性能的影响

英文题名：Effect of Screw Configuration and Screw Speed on the Mechanical and Rheology Properties of Glass Fiber Reinforced Polyamide 66

作者：杨建民[1];李春忠[1];张玲[1];张天水[1]

机构：[1]华东理工大学超细材料制备与应用教育部重点实验室,上海200237

年份：2010

卷号：26

期号：10

起止页码：118

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20104813436336);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(20706015;50703009);上海市科技启明星计划(07QA14014);上海市科委纳米专项(0852nm02000;0952nm02000);上海市曙光学者跟踪计划(08GG09);上海市优秀学科带头人计划(08XD1401500);上海市重点学科建设项目资助(B502)

语种：中文

中文关键词：聚酰胺66;玻璃纤维;平均长度;螺杆结构与转速

外文关键词：polyamide 66; glass fiber; average length; screw configuration and speed

摘要：通过改变挤出机的螺杆结构及螺杆转速,研究了熔融挤出过程中,剪切强度的变化对聚酰胺66/玻璃纤维复合材料力学及流变性能的影响。结果表明,当螺杆后段的捏合块数量由7块减少到4块,且螺杆转速为120r/min时,熔体受到的机械剪切应力最小,在挤出过程中有效地减少了玻纤的断裂,使其平均长度最长,复合材料的力学性能最高。聚酰胺66中加入玻璃纤维能显著影响复合材料的流变行为,玻纤的平均长度越长,与基体间的作用就越强,共混体系的复数黏度及动态储能模量也越高。
The method of changing the screw configuration and screw speed of two-screw extruder was used to study the influence of shearing strength on the mechanical and rheological properties of polyamide 66/glass fiber composites made by melt mixing. The results show that when the number of kneading blocks decreases from 7 to 4,and the screw speed is 120 r/min,the composites undergo the lowest shear stress,which reduce the fracture of glass fiber effectively. Fiber average length reaches maximum value,and the mechanical properties of the composites is optimum. Rheological properties of PA66 are greatly influenced by adding glass fiber in PA66 matrix. With increasing fiber average length,the interaction between fibers and matrix is stronger,which leads to an increase in viscosity and storage modulus.