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利用激光对玻璃纤维、玄武岩纤维和碳纤维进行表面改性后,以环氧树脂为基体,分别制备三种纤维增强环氧树脂复合材料.利用SEM、万能试验机对表面改性前后的碳纤维形态、力学性能及三种纤维/环氧树脂复合材料的力学性能和断面形貌进行表征,研究了纤维激光表面改性对三种纤维及其环氧树脂复合材料力学性能的影响。结果表明:激光表面改性对碳纤维/环氧树脂复合材料的力学性能提升最高,复合材料的拉伸强度最大提高了77.06%,冲击强度提高了37.5%.玄武岩纤维次之,而玻璃纤维/环氧树脂复合材料的力学性能有所下降。因此激光进行表面改性适用于碳纤维和玄武岩纤维。
Three kinds of fiber-reinforced epoxy resin composites were prepared by surface modification of glass fiber, basalt fiber and carbon fiber with laser, and three kinds of fiber-reinforced epoxy resin composites were prepared by using epoxy resin as matrix.Using SEM and universal testing machine, the carbon fiber morphology, Mechanical properties and mechanical properties of the three fiber / epoxy composites and cross-sectional morphology were characterized to study the fiber laser surface modification on the mechanical properties of three fibers and epoxy resin composites. The results show that the mechanical properties of the carbon fiber / epoxy composites are enhanced most greatly by laser surface modification, the tensile strength of the composites increases by 77.06% and the impact strength by 37.5%, while the basalt fibers are the second, while the glass fiber / The mechanical properties of oxygen resin composites decreased. Therefore laser surface modification is suitable for carbon fiber and basalt fiber.