PE/PTT原位成纤复合材料形态及力学性能研究  

Study on the Morphology and Mechanical Properties of PE/PTT In-situ Fiberized Composites

作　　者：任曙霞[1] 苏旺飞[1] 黄象安[2,1] 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《塑料科技》2009年第11期58-61,共4页Plastics Science and Technology

摘　　要：用挤出-熔体拉伸-淬冷法制得了聚乙烯/聚对苯二甲酸丙二醇酯(PE/PTT)原位成纤增强纤维,以普通共混纤维作为对照,研究了挤出后熔体拉伸速度对PTT成纤形态和纤维强度的影响。结果表明:原位成纤作用对材料力学性能的提高在注塑样条中得到了体现。拉伸速度越大,液滴转化为纤维的数量越多,形成的微纤越多;但若拉伸速度过大,在本实验范围内,纤维强度反而有所下降;在注塑样条中,随着PTT含量的增加,材料的拉伸强度先增大后减小。The PE/PTT in-situ fiberized reinforcing fiber was prepared by means of extrusion-drawing-cooling method. The influencing effects of drawing speed on the fiberization and tensile strength were studied in contrast to the common blend fiber of PE/PTT. The results showed that the in-situ fiberized action has great effect on the improvement of the mechanical properties of injection sample. With the drawing speed increasing,the more the amount of melt drop turned into fiber in PTT,the more micro-fibril formed; and then when the drawing speed was too fast,the fiber strength would be decreased. The tensile strength of the injection sample increased first and then decreased with the increasing of the content of PTT.

关 键 词：聚乙烯 聚对苯二甲酸丙二醇酯 原位成纤复合材料 拉伸速度 成纤形态 力学性能 

分 类 号：TQ327.1[化学工程—合成树脂塑料工业]