摘要
基于工程造价对纤维复材的低成本和高性能应用需求,采用溶胶-凝胶法制备了不同结构类型的纤维织物,考察了正硅酸乙酯(TEOS)含量、溶胶黏度和浸渍时间对涂层复合纤维抗氧化性能的影响,并对比分析了初始纤维织物和涂层纤维织物的拉伸性能。结果表明,纤维织物适宜的工艺参数:水∶TEOS∶乙烯基三乙氧基硅烷(VTES)∶无水乙醇比例为7∶7∶0.5∶11、溶胶黏度为3.7~4.2 mPa·s、浸渍时间为35 min;涂层纤维织物的拉伸断裂强度都高于初始纤维织物。在优化工艺下制备的涂层纤维织物比初始纤维织物有更高的力学性能,且经砂线为碳纤维、Z向砂为玻璃纤维具有最佳的力学性能。
Based on the application requirements of low cost and high performance of fiber composites to reduce engineering cost,fiber fabrics with different structures were prepared by sol-gel method.The effects of TEOS content,sol viscosity and immersion time on the oxidation resistance of coated composite fibers were investigated,and the tensile properties of initial fiber fabrics and coated fiber fabrics were compared and analyzed.The results showed that the suitable process parameters of the fiber fabric∶water∶TEOS∶vinyltriethoxysilane VTES)∶absolute ethanol were 7∶7∶0.5∶11,the sol viscosity was 3.7~4.2 mPa·s,and the impregnation time was 35 min.The tensile fracture strength of coated fiber fabrics was higher than that of initial fiber fabrics.The coated fiber fabric prepared under the optimized process had higher mechanical properties compared to the initial fiber fabric of the same structural type,and the best mechanical properties were obtained by using carbon fiber as sand thread and glass fiber as Z-direction sand.
作者
何剑
HE Jian(LandRun Engineering Consulting Co.,Ltd.,Changsha 410000,China)
出处
《粘接》
CAS
2024年第12期65-68,共4页
Adhesion
基金
长沙市公共工程建设中心项目(项目编号:QT202102-ZX1)。
关键词
工程造价
纤维织物
涂层
高温氧化
拉伸性能
engineering cost
fiber fabrics
coating
high temperature oxidation
tensile property
