纳米SiC的表面改性对CE／纳米SiC复合材料力学性能的影响  

EFFECT OF NANO-SiC MODFED BY COUPLNG AGENT ON MECHANCAL PROPERTY OF CE/NANO-SiC COMPOSTES

作　　者：张学英[1] 张文根[1] 祝保林[1] 王君龙[1] 梁国正[2] 

机构地区：[1]渭南师范学院复合材料研究所,渭南714000 [2]西北工业大学理学院,西安710072

出　　处：《工程塑料应用》2009年第1期19-22,共4页Engineering Plastics Application

基　　金：陕西省自然科学基金项目(2006B25)

摘　　要：采用高分子偶联剂SCA-3和低分子偶联剂KH-560对纳米SiC进行表面改性,并分别制备了氰酸酯树脂(CE)/纳米SiC复合材料。考察了这两种偶联剂对CE/纳米SiC复合材料力学性能的影响,并用透射电子显微镜(TEM)和扫描电子显微镜(SEM)表征了材料的微观结构和断面形貌,探讨了偶联剂的表面改性机理。结果表明,SCA-3比KH-560更能有效地改善CE的力学性能;相对纯CE而言,经SCA-3表面改性纳米SiC的质量分数为1%时,CE/纳米SiC复合材料的冲击强度和弯曲强度分别提高了91.38%和32.84%。Nano-SiC was modified by the macromolecule silane coupling agent （SCA -3） and the low molecule silane coupling agent （KH -560）, cyanate ester resins （CE）/nano-SiC composites were prepared respectively. The effect of two coupling agent on mechanical properties of CE/nano-SiC composites were investigated. The microstructure and morphology of CE/nano-SiC composites were showed through TEM and SEM, and the surface modification mechanism of coupling agent was discussed. The results indicated that SCA -3 had better effect on improving the mechanical properties of CE than KH -560. Compared with pure CE, the i/npact strength and the flexural strength of CE/nano-SiC composite were increased by 91.38% and 32.84% respectively when nano-SiC was modified by SCA-3 and it＇s mass fraction was 1%.

关 键 词：氰酸酯树脂 偶联剂 纳米SIC 力学性能 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业] TB301[一般工业技术—材料科学与工程]