分散相含量对HDPE/PA6原位成纤增强复合材料性能的影响  

Effect of Contents of Dispersed Phase on Properties of HDPE/PA6 In-situ Fiber Reinforced Composites

作　　者：黄安荣[1] 韦良强[2] 罗筑[1,2] 朱永军[1] 秦舒浩[1,2] 左晓玲[1] 谭鹏[1] 

机构地区：[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

出　　处：《塑料工业》2013年第8期15-19,共5页China Plastics Industry

基　　金：贵州大学研究生创新基金(研理工2013066)

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2～5μm的纤维,当HDPE/PA6质量比为85/15时,微纤直径约为3μm,此时,与普通共混体系相比,原位成纤增强复合体系的拉伸强度提高了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8.8℃。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 insitu 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 softening temperature of in-situ fiber reinforcing composites enhanced obviously with the increase of the contents of PA6,when the content of PA6 was 25 wt％,the Vicat softening temperature improved by 8.8 ℃ compared with that of the common blending.

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 

分 类 号：TQ320.6[化学工程—合成树脂塑料工业]