高性能T800碳纤维复合材料树脂基体

在分析T800 碳纤维表面上胶剂的基础上, 系统研究了适用于制备高性能T800 碳纤维复合材料的树脂基体, 测试了树脂浇注体及其复合材料的力学性能和热机械性能, 研究了树脂基体对T800 碳纤维复合材料界面性能的影响。结果表明, T800 碳纤维表面上胶剂中酯基含量较高, 与缩水甘油酯类环氧树脂有良好的界面相容性, 经复配和优化的树脂体系其T800 碳纤维复合材料的层间剪切强度达到138 MPa , NOL 环拉伸强度达到2530MPa , 玻璃化温度( Tg ) 达到213 ℃, 具有优异的界面性能和耐热性能。 

High-performance resin matrix for T800 carbon f iber composites

High-performance carbon fiber has been widely used in commercial and military fields because of its highstrength , light weight and high stiffness. However , the application of higher performance carbon fiber ( e. g. T800)would cause worse mechanical performances because of the ext reme inertness of it s surface caused by the alignmentof graphitic crystallites. In order to produce the high-performance resin mat rix , which can bond T800 carbon fiber(CF) well , the sizing of T800 CF was analyzed. The effect of resin mat rix’ s st ructure and property on T800 CFcomposite was studied based on the analysis. Meanwhile , the mechanical property and thermal mechanical propertyof the resin and it s carbon fiber composite were analyzed. The result s show that T800 sizing possesses high contentof ester , which can possess excellent interfacial properties with glyceride epoxy. With the help of the optimized resinsystem , the T800 CF composite possesses excellent interfacial properties and heat-resistance properties. The interlaminar shear st rength ( ILSS) of the composite is 138 MPa , the tensile st rength of NOL rings is 2530 MPa , and theglass t ransition temperature ( Tg ) is 213 ℃.