论文部分内容阅读
基于炭布优异的摩擦磨损性能、自润滑性能以及低密度等特点,将其应用于湿式摩擦材料中,以适应高转速、大压力或润滑不充分等极端工况。分别以1K、3K和6K碳布为增强体,制备出三种炭布/树脂复合摩擦材料,研究了其湿式摩擦学性能。结果表明:随着纤维束内单丝数量的增加,摩擦材料的瞬时制动稳定性降低,动摩擦系数减小,但是耐磨性能提高。所有摩擦材料的磨损率小于1.10×10-5 mm3/J,表现出较好的耐磨性能,并且对偶材料的磨损率很小,仅为0.40×10-5 mm3/J。磨损主要表现为纤维断裂、拔出及树脂脱粘等形式,但是在磨损表面没有形成大尺寸磨屑和明显的“第三体”磨粒,导致摩擦材料和对偶材料的磨损率较小。
Based on the excellent friction and wear properties of carbon cloth, self-lubricating properties and low density, it is applied to wet friction materials to adapt to extreme conditions such as high speed, big pressure or insufficient lubrication. Three types of carbon cloth / resin composite friction materials were prepared with 1K, 3K and 6K carbon cloth respectively as reinforcements, and their wet tribological properties were studied. The results show that with the increase of the number of monofilaments in the fiber bundle, the instantaneous braking stability of the friction material decreases, the dynamic friction coefficient decreases, but the wear resistance improves. The wear rate of all the friction materials is less than 1.10 × 10-5 mm3 / J, showing better wear resistance, and the wear rate of the dual material is very small, only 0.40 × 10-5 mm3 / J. Abrasion is mainly manifested in the form of fiber breakage, pull-out and resin debonding, but no large-size wear debris and obvious “third body” wear particles are formed on the wear surface, resulting in a relatively small wear rate of the friction material and the dual material .