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分散相含量对HDPE_PA6原位成纤增强复合材料性能的影响_黄安荣.doc

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第 41 卷第 8 期 塑料工业 2013 年 8 月 CHINA PLASTICS INDUSTRY ·15· 分散相含量对 HDPE /PA6 原位成纤增强 复合材料性能的影响 * 黄安荣1 ,韦良强2 ,罗 筑 2 ,朱永军1 ,秦舒浩 ** ,左晓玲1 ,谭 鹏 1 1 2 1 , ,, (1. 贵州大学材料与冶金学院,贵州 贵阳 550025;2. 国家复合改性聚合物材料工程技术研究中心,贵州 贵阳 550014) 摘要:采用熔融挤出-微纳叠层共挤制备了 HDPE/PA6 原位成纤增强复合材料,通过 SEM 分析了分散相 PA6 含 量对其在基体中的形态及分布的影响;讨论了两种加工方式下分散相 PA6 含量对复合材料静态力学性能和耐热性能 的影响以及加工方式对复合体系力学性能的作用。结果表明:在原位成纤增强复合材料中存在直径为 2 ~ 5 μm 的纤 维,当 HDPE/PA6 质量比为 85/15 时,微纤直径约为 ,此时,与普通共混体系相比,原位成纤增强复合体系的 3 μm 拉伸强度提高了 6. 9%,拉伸模量提高了 14. 8%,冲击强度提高 10. 03%;随 PA6 含量的增加,原位成纤增强复合体 系维卡软化温度明显提高,PA6 质量分数为 25%时比普通共混体系提高 8 ℃。 关键词:共混改性;复合材料;原位成纤;力学性能;维卡软化温度 DOI: 3969/j. issn. 1005-5770. 2013. 08. 004 中图分类号:2;TQ323. 6 文献标识码:A 文章编号:1005-5770 (2013) + TQ325. 1 08-0015-05 Effect of Contents of Dispersed Phase on Properties of HDPE/PA6 In-situ Fiber Reinforced Composites 1 , 2 , 2 , 1 , 1 , HUANG An-rong WEI Liang-qiang LUO Zhu ZHU Yong-jun 1 1 , 2 , 1 , QIN Shu-hao ZUO Xiao-ling TAN Peng (1. College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China; 2. National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550014,China) Abstract: HDPE /PA6 in-situ fiber reinforcing composites were prepared by melt extrusion micro-nano laminated co-extrusion. The effect of contents of PA6 dispersed phase in matrix on morphology and distribution was studied by SEM. It discussed the effect of content of PA6 in composites under two different processing on the static mechanical performance, thermal resisting performance and the influence of processing method on the mechanical behavior of composites. The result indicated that there were fibers with diameter of 2~5 μm in the in-situ fiber reinforcing composites,where HDPE /PA6 = 85/15, the diameter of fiber was about 3 μm. At this time,compared with that of the common blending, the tensile strength of in-situ fiber reinforcing composites was improved by 6. 9%, the tensile modulus improved by 14. 8%and the impact strength improved by 10. 03%. The Vicat sof
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