华东理工大学学报（自然科学版）2017，Vol.43Issue(2)：178-183,202,7.DOI:10.14135/j.cnki.1006-3080.2017.02.005
挤出循环对玻纤增强PA66复合材料流变性能和力学性能的影响
Influence of Extrusion Cycle on the Rheological and Mechanical Properties of Glass Fiber Reinforced PA66 Composites
张来胜 1王婷兰 1唐颂超 1孟庆国 2张祥福2
作者信息
- 1. 华东理工大学材料科学与工程学院,上海200237
- 2. 上海普利特复合材料股份有限公司,上海201707
- 折叠
摘要
Abstract
Glass fiber reinforced PA66 (PA66/GF35) composites were reprocessed by the twin screw extruder.The effects of extrusion cycles on the Theological properties,thermal performance,glass fiber length and mechanical properties were investigated.The results showed that the melt volume flow rate of PA66/GF35 composites increased gradually and their apparent viscosity decreased significantly upon increasing the number of reprocessing cycle.For PA66 matrix,thermal oxidative degradation occurred during extrusion cycles,which led to the decrease of the intrinsic viscosity,the melting point,crystallization temperature and the degree of crystallinity,as well as the fraction of glass fiber and reduction of glass fiber length.Mechanical properties of PA66/GF35 composites were weakened with the increase of extrusion cycle.After four cycles extrusion,their tensile strength,flexural modulus and impact strength reduced by 38.41％,21.73％ and 67.33％,respectively.关键词
玻纤增强尼龙66/挤出循环次数/流变性能/特性黏度/力学性能Key words
glass fiber reinforced PA66 composites/extrusion cycles/rheological properties/intrinsic viscosity/mechanical properties分类
化学化工引用本文复制引用
张来胜,王婷兰,唐颂超,孟庆国,张祥福..挤出循环对玻纤增强PA66复合材料流变性能和力学性能的影响[J].华东理工大学学报（自然科学版）,2017,43(2):178-183,202,7.
