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阐述了三维正交机织复合材料沿不同方向的拉伸力学性能。复合材料以三维正交机织玻璃纤维织物为增强体,以环氧树脂为基体,基于真空辅助树脂传递模塑(VARTM)工艺成型并制备试样。测试了试样的拉伸性能,结果表明:该三维正交机织复合材料90°(纬向)的拉伸性能优于0°(经向),但断口处存在严重的纤维抽拔和界面脱粘现象;增强体结构中经纱和纬纱含量对拉伸性能影响较大,面内某一纱线含量高,则该方向拉伸性能就强。同时,Z纱有效地改善了普通层合板复合材料拉伸分层失效的缺陷,但玻璃纤维与树脂基体界面结合性能较差。
The tensile mechanical properties of three-dimensional orthogonal woven composites in different directions are described. The composite material was reinforced by three-dimensional orthogonal woven glass fiber fabric and epoxy resin was used as the matrix. The composite was prepared by vacuum assisted resin transfer molding (VARTM) process and samples were prepared. Tensile properties of the samples were tested. The results show that the tensile properties of the three-dimensional orthogonal woven composite at 90 ° (latitudinal) are better than 0 ° (warp direction), but there are serious fiber extraction and interface Debonding phenomenon; reinforced body structure of the warp and weft content of the greater impact on the tensile properties of a certain high-level yarn, then the direction of the tensile properties. At the same time, Z-yarns effectively improve the defect of ordinary laminate laminates in tensile stratification failure, but the interface between glass fiber and resin matrix is poor.