口模拉伸共聚高密度聚乙烯单丝的取向结构探讨

AN INVESTIGATION ON STRUCTURE MODEL OF ORIENTED COPOLYMERIZED HDPE MONOFILAMENTS BY DIE

口模拉伸共聚高密度聚乙烯单丝的取向结构探讨益小苏邹湘坪（浙江大学高分子系杭州３１００２７）谭洪生（齐鲁石化公司树脂所淄博２５５４３６）关键词共聚型聚乙烯，增强型单丝材料，Ｃｏｘ复合材料模型，Ｇｉｂｓｏｎ＆Ｗａｒｄ晶桥模型，口模拉伸工艺高密度聚乙烯（...

Self-reinforced Polymerized HDPE monofilament were prepared by die drawing process. According to Cox model for fiber composite and Gibson & Ward crystalline bridges′ model, the reinforced mechanism was discussed to reveal that the mechanical improvement of monofilament was due to the growth of needlelike crystal with larger aspect ratio or the increase of volume fraction of the crystalline bridge. Based on the experimental results obtained by DMA, DSC and SEM, the theoretical prediction was also analyzed and discussed, and found the theoretical values could wellexplain the monofilament behavior.