纳米二氧化硅修饰玻纤表面对玻纤增强聚丙烯复合材料性能的影响  

The effect of nano-silica modified glass fiber on the properties of glass fiber reinforced polypropylene composites

作　　者：靳宇 信春玲[1,2] 何亚东[1,2] 闫宝瑞[1] 任峰[1] 李锐 JIN Yu;XIN ChunLing;HE YaDong;YAN BaoRui;REN FengLI Rui(College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Polymer Processing Equipment Engineering Research Center,Ministry of Education,Beijing University of Chemical Technology,Beijing 100029,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]北京化工大学教育部高分子材料加工装备工程研究中心,北京100029

出　　处：《北京化工大学学报（自然科学版）》2020年第2期36-43,共8页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家重点研发计划(2016YFB0302005);中石化重大科技项目—绿色环保汽车轻量化材料技术开发与应用(218013)。

摘　　要：基于纳米颗粒比表面积高的特性,将超声震荡分散后的纳米SiO 2通过化学接枝方法修饰玻璃纤维表面制备玻璃纤维/聚丙烯热塑性复合材料。通过扫描电子显微镜(SEM)表征纳米SiO 2在玻纤表面的分布状态及其与纤维树脂的结合情况,结果表明纳米颗粒在纤维表面分布状况良好,纤维与树脂能较为紧密地结合。通过动、静态力学测试表征复合材料的界面结合情况及整体力学性能,结果表明复合材料在动态热机械分析(DMA)测试下具备良好的综合界面性能;与空白组对比,复合材料的层间剪切强度最高提升约86%,拉伸强度最高提升约300%,弯曲强度最高提升约94%。In order to take advantage of the high specific surface area of nanoparticles,a nano-silica suspension was dispersed by ultrasonication,and introduced onto the surface of glass fibers by chemical grafting.The modified glass fibers were molded into laminate composites with polypropylene(PP).The nano-silica nanoparticles were well distributed on the fiber surface,and the fiber and resin were strongly combined.The results of dynamic mechanical analysis(DMA)showed that the modified glass fiber/PP composites had a good comprehensive interface performance compared with the unmodified glass fibers,the interlaminar shear strength increased by about 86%,the tensile strength increased by about 300%,and the bending strength increased by about 94%.

关 键 词：界面结合性能 纳米二氧化硅 超声分散 玻纤聚丙烯复合材料 

分 类 号：TQ322[化学工程—合成树脂塑料工业]