摘要
该文研究纳米级氧化物涂层对碳纤维 /环氧基复合材料的界面性能和耐热性能的影响。采用溶胶 -凝胶法在碳纤维的表面涂覆了氧化铝和钇稳定的氧化锆(YSZ)涂层 ,透射电镜分析表明涂层中粒子的大小约为 1 0nm。通过比较氧化物涂层前后碳纤维 /环氧复合材料的力学性能发现 ,Al2 O3 和YSZ涂层后使复合材料的层间剪切强度分别提高了 1 7.7%和 52 .0 % ,拉伸强度和弯曲强度也均稍有提高。且在碳纤维表面形成的Al2 O3 或YSZ涂层在 350～ 70 0℃能有效地减缓碳纤维环氧基复合材料的氧化失重速率。
The effects of nanoscale oxide coatings on interfacial properties and resistance thermal property of carbon fiber /epoxy composites were studied in this paper. The alumina and yittra stabilized zirconia (YSZ) coatings on the surface of carbon fiber were prepared by sol-gel method. The particle sizes of coatings observed by TEM were about 10 nm. Studies on the dynamic properties of coated-and-uncoated carbon fiber/epoxy composites showed that the ILSS of Al_2O_3-coated and YSZ-coated carbon fiber /epoxy composites increased by 17.7 % and 52.0 %, respectively, and stretching and bending strength increased slightly. The oxide loss weight rates of coated composites obviously decreased in the range of 350 ℃ and 700 ℃.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2003年第5期636-641,共6页
Journal of Nanjing University of Science and Technology
基金
南京市科技发展项目 (2 0 0 12 0 83)
关键词
氧化物涂层
碳纤维/环氧复合材料
力学性能
耐热性能
oxide coating, carbon fiber /epoxy composites, dynamic property, resistance thermal property
