碳纤维增强复合材料具有优异的刚性,但延展性差,纤维容易发生脆断;玻璃纤维延展性好,但强度相对较低,将碳纤维与玻璃纤维经过针刺工艺进行混杂,采用真空导入模塑成型工艺制备出多种混杂结构的玻璃纤维/碳纤维复合材料。使用电子万能试验机对混杂复合材料的拉伸、弯曲性能进行测试,通过场发射扫描电子显微镜观察混杂复合材料的断面形貌。结果表明,混杂处理能够提高复合材料的强度,层间混杂复合材料拉伸强度比传统玻璃纤维复合材料提升25.24%,最大破坏应变比传统碳纤维复合材料提升40.26%,在弯曲破坏测试中表现为假塑性破坏。
Carbon fiber reinforced composites have excellent rigidity but poor ductility,and the fiber is prone to brittle fracture.Blass fiber ductility is good,but the strength is relatively low.The carbon fiber and glass fiber were blended through the needle-punching process,and a variety of glass fiber/carbon fiber composites with hybrid structure were prepared by vacuum introduction molding process.The tensile and flexural properties of the hybrid composites were tested using an electronic universal testing machine,and the cross-section morphology of the hybrid composites was observed by field emission scanning electron microscopy.The results showed that the hybrid treatment could improve the strength of the composites,and the tensile strength of the interlayer hybrid composites was 25.24% higher than that of the traditional glass fiber composites,the maximum destructive strain was 40.26% higher than that of the traditional carbon fiber composites,and it showed pseudo-plasticity damage in the bending damage test.
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基金资助
陕西省重点研发计划项目(2022NY-057,2023-YBGY-466);陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-013)
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