纳米SiC增强碳纤维层合板摩擦磨损性能

Friction and Wear Properties of Nano-SiC Reinforced Carbon Fiber Laminates

为了探寻一种简便的制备纳米SiC增强碳纤维层合板的方法,本文将纳米SiC颗粒均匀分散在无水乙醇中,制备成不同质量分数的SiC试剂,然后均匀喷涂在碳纤维预浸料表面,固化成型。对不同试件进行摩擦磨损实验,得到不同含量的纳米SiC颗粒对碳纤维层合板摩擦因数、磨损量的影响规律,并且对磨损形貌和复合材料的硬度进行分析。实验结果表明:在碳纤维预浸料表面喷涂纳米SiC颗粒能够有效改善碳纤维层合板的摩擦磨损性能;当纳米SiC浓度为1%时,层合板的摩擦因数、磨损量、磨痕的宽度及深度较于不含纳米SiC的层合板分别降低52%,63%,32.3%,54.8%,摩擦磨损性能最好。

In order to find a convenient method for preparing nano-SiC reinforced carbon fiber laminates,the nano-SiC particles were uniformly dispersed in anhydrous ethanol to prepare nano-SiC reagent with different mass fractions,and then the nano-SiC reagent was uniformly sprayed on the surface of carbon fiber prepregs and solidified. The friction and wear tests of different specimens were carried out to obtain the effects of different content on the friction coefficient and wear amount of carbon fiber laminates,and the wear morphology and hardness of composites were analyzed. The experimental results show that spraying nano-SiC particles on the surface of carbon fiber prepreg can effectively improve the friction and wear performance of carbon fiber laminates. When the concentration of nano-SiC is 1%,the friction coefficient,wear,width and depth of the laminates decrease by 52%,63%,32. 3% and 54. 8%,respectively,compared with that of the specimens without nano-SiC.