环氧树脂/纳米SiO_2复合材料的制备  

Preparation of epoxy resin/nano-SiO_2 composites

作　　者：郝胜强[1] 张云仲 王永利[1] 上官林宏[1] 杨志毅[1] 刘永跃[3] 韩杨[3] 

机构地区：[1]济南军区司令部工程科研设计所,山东省济南市250002 [2]工程兵学院,江苏省徐州市210004 [3]济南军区司令部军训部,山东省济南市250002

出　　处：《合成树脂及塑料》2014年第4期36-39,共4页China Synthetic Resin and Plastics

摘　　要：制备了环氧树脂(EP)/纳米SiO2复合材料,研究了纳米SiO2用量对复合材料结构和力学性能的影响,采用扫描电子显微镜观察了复合材料的断面形貌,分析了纳米SiO2的增韧机理。添加适量的纳米SiO2可显著提高EP的力学性能,添加6 phr纳米SiO2时,EP/纳米SiO2复合材料的力学性能最佳,拉伸剪切强度、弯曲强度、悬臂梁缺口冲击强度分别为13.8 MPa,86.1 MPa,11.6 kJ/m2;适量的纳米SiO2能改善EP的内部结构,具有明显的增韧补强作用。The authors prepared the epoxy resin/nano-SiO2 composite and studied the effects of nano-SiO2 dosage on its structure and mechanical properties. The fracture morphology of the epoxy resin/nano-SiO2 composite was observed by means of scanning electron microscope（SEM） and the toughening mechanism of nano-SiO2 was analyzed. The mechanical properties of the epoxy resin could be enhanced remarkably by adding appropriate amount of nano-SiO2. The mechanical properties of the epoxy resin/nano-SiO2 composite were the best when the content of nano-SiO2 was 6 phr. The tensile shear strength, flexural strength, Izod notched impact strength were 13.8 MPa, 86.1 MPa,11.6 kJ/m2 respectively. Adding appropriate amount of nano-SiO2 could improve the internal structure of the composites and the nano-SiO2 had signally toughening and reinforcement effect on the composites.

关 键 词：环氧树脂 纳米二氧化硅 力学性能 增韧补强 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]