碳纤维/环氧树脂脉管自润滑复合材料的制备及摩擦性能

以聚乳酸（PLA）为前驱体，碳纤维（CF）为增强体，通过经纬编织成PLA-CF复合纤维织物；以环氧树脂（EP）为基体，甲基硅油为润滑介质，采用前驱体蒸发（VaSC）技术和真空浸油方式分别制备了脉管自润滑环氧树脂（VAEP）材料和CF/VAEP复合材料。利用SEM对CF/VAEP复合材料的断面、摩擦面和对偶面形貌进行表征，以万能材料试验机和高速环块摩擦磨损试验机对CF/VAEP复合材料的力学和摩擦学性能进行了测试。结果表明:脉管结构和CF提升了EP的润滑性能和力学性能。当径向脉管密度为8孔/10 mm时，VAEP的摩擦系数和磨损率较纯EP分别降低了67.95%和85.71%；当径向脉管密度为8孔/10 mm，CF经纬丝束比为8/4时，CF/VAEP复合材料的拉伸强度、拉伸模量、弯曲强度、弯曲模量比相同径向脉管密度的VAEP分别提高了203.33%、44.16%、325.78%、311.37%。 

Preparation and tribological properties of carbon fiber/epoxy resin vascular self-lubrication composites

Vascular self-lubrication epoxy resin (VAEP) and carbon fiber (CF)/VAEP composites were prepared by the vaporization of sacrificial components (VaSC) technology and vacuum immerse mode. With methyl silicone oil as a lubricant, polylactide (PLA) was used as the sacrificial components, CF was used as the reinforcing components, which was woven into PLA-CF fabric by the measure of warp and weft weave. The morphology of the CF/VAEP composites of section, friction surface and transfer film surface were characterized by SEM. The mechanical properties and tribological properties of the CF/VAEP composites were tested by electronic universal testing machine and high-speed block-on-ring wear tester. The results show that the vascular structure and CF enhance the lubrication and mechanical properties of epoxy resin (EP). Compared with the pure EP, when the radial direction vascular density of the VAEP is 8 pores/10 mm, the friction coefficient and wear rate are reduced by 67.95% and 85.71%, respectively. Compared with the same radial direction vascular density of VAEP, when the radial direction vascular density of the CF/VAEP composites is 8 pores/10 mm and warp to weft ratio of CF tow is 8/4, the tensile strength, tensile modulus, bending strength and bending modulus of the CF/VAEP vascular self-lubricating composites are increased by 203.33%, 44.16%, 325.78%, 311.37%, respectively.