表面修饰碳纳米管对玻璃纤维及复合材料的性能影响

Effect on the strength of glass fibers and composites materials modified with carbon nano tubes on the glass fiber surface

玻璃纤维因良好的力学性能被广泛应用于增强复合材料,而玻璃纤维与树脂基体的界面是影响复合材料性能的关键因素之一。实验中将碳纳米管(CNTs)改性后均匀地分散到浸润剂中,利用玻璃纤维在线成型工艺直接涂覆到玻璃纤维表面并制备复合材料。通过力学性能测试和显微形貌分析,结果表明CNTs能较好地分散于浸润剂和玻璃纤维表面,发现0.5%(质量分数)CNTs可以显著提高玻璃纤维的拉伸强度,并能显著改善纤维和基体的结合强度,从而提高复合材料的强度。

Due to the good mechanical properties,glass fibers are widely used as fiber reinforced composites( FRPs).For certain,the interface between glass fibers and matrix was one of the key factors on affecting the performance of composites. In the article the modified CNTS was dispersed uniformly into the sizing agent,and was coated to the surface of glass fiber through the on-line forming process up to manufacture the composites. Through mechanical properties testing and micrograph observation,it was found that the CNTs was sprinkled in the surface,and 0. 5wt% CNTs can improve the strength of glass fiber. Moreover,it can promote the combination between the fiber and resin,and enhance the strength of composite materials.