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在紫外光固化树脂中,采用新的复合工艺制备了晶须增强树脂基复合材料。采用FTIR研究了SiC晶须对树脂体系固化反应性的影响,对固化成型件进行了拉伸测试,并利用SEM观察分析了成型件断口形貌,探讨了晶须的增强机理。结果表明:实验合成的复合材料机械强度明显高于纯树脂体系;SiC晶须具有较高的光透性,对固化体系反应影响很小,是光固化成型材料的较为理想增强体。
In the UV-curable resin, whisker reinforced resin matrix composites were prepared by a new composite process. FTIR was used to study the effect of SiC whiskers on the curing reactivity of the resin system. Tensile tests were carried out on the cured moldings. The fracture morphology of the moldings was observed by SEM, and the whisker enhancement mechanism was also discussed. The results show that the mechanical strength of the composites synthesized by the experiment is obviously higher than that of the pure resin system. The SiC whiskers have a high light permeability and little influence on the curing system reaction. They are ideal reinforcements for the light-cured molding materials.