PE/PBT原位成纤增强复合材料的形态和力学性能研究  

Morphology and Mechanical Properties of PE/PBT In-situ Fiberized Reinforcing Composites

作　　者：罗卫[1] 黄象安[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室 东华大学材料科学与工程学院,上海201620

出　　处：《合成纤维》2010年第12期18-21,共4页Synthetic Fiber in China

摘　　要：采用挤出-熔体拉伸-淬冷法制得了聚乙烯/聚对苯二甲酸丁二醇酯（PE/PBT）原位复合纤维和原位增强材料,研究了挤出后熔体拉伸速度对PBT微纤形态和复合纤维强度的影响以及原位成纤复合材料的性能。结果表明：随着熔体拉伸速度的增加,PBT微纤的平均直径先减小后增大,复合纤维相对强度基本呈上升趋势。在注塑样条中,随着PBT含量的增加,材料的拉伸强度先增大后减小,但比普通共混材料的力学性能好。PE/PBT in-situ fiberized reinforcing composites were prepared by means of extrusion-drawing-cooling method.The effects of drawing speed on the fiberization and tensile strength were studied.The results showed that with the drawing speed increasing,the more the amount of PBT melt drops turned into microfibers,the average diameter of PBT microfibers decreased and then increased.And the breaking strength of PE/PBT in-situ fibers was improved.It can also be found that the in-situ fiberized action has great effect on the improvement of the mechanical properties of injection sample,the tensile strength of the injection sample increased first and then decreased with the increasing of the content of PBT.

关 键 词：PBT PE 原位成纤复合材料 微纤形态 力学性能 

分 类 号：TQ342.61[化学工程—化纤工业]