摩擦时间对CaSO_4晶须增强树脂基复合材料摩擦学性能的影响  

Effects of friction time on tribological properties of CaSO_4 whisker reinforced resin-based composite materials

作　　者：林有希[1] 黄俊钦[1] LIN Youxi HUANG Junqin(School of Mechanical Engineering and Automation,Fuzhou University, Fuzhou, Fujian 350116, China)

机构地区：[1]福州大学机械工程及自动化学院,福建福州350116

出　　处：《福州大学学报（自然科学版）》2017年第3期380-384,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51375094)

摘　　要：采用模压成型工艺制备CaSO_4晶须增强树脂基复合材料,并选用一种市售材料作对比,研究摩擦时间对两种材料摩擦学性能的影响,利用SEM及EDAX观测磨损表面形貌及成分变化,分析其磨损机理.结果表明:随着摩擦时间的变化,自制材料摩擦系数维持在0.45左右,制动平稳性较好,磨损机理以磨粒磨损为主;市售材料摩擦系数在0.32~0.36范围内波动,制动过程易产生颤动和噪声,磨损机理以粘着磨损和热疲劳磨损为主;两种材料摩擦表面平均温度及其磨损率均随着摩擦时间的延长而逐渐升高,且与对偶件存在明显的粘着效应.CaSO4 whisker reinforced resin-based composite materials were prepared by thermo-com-pression process,and a commercial brake material was selected as a reference. The influence of fric-tion time on the tribological perl＇ormances of samples was investigated by CHASE tester. The SEM and EDAX were used to observe the worn surface morphology and micro-structure respectively,and the in-fluence of friction time on wear mechanism was analyzed. Results show that the average friction coeffi-cient of self-make material maintained at around 0.45 with the increase of friction time,and showed stable and reliable brake performance during the whole braking process, and its main wear mechanism was abrasive wear. While the average friction coefficient of commercial brake material was fluctuated in the range of 0.32 ？0.36 and it was easy to produce vibration and noise during the whole braking process,and its main wear mechanism were adhesive wear and thermal fatigue wear. Furthermore,the average temperature of friction surface and the wear rate of samples were both increased gradually with the increase of friction time,and had obvious adhesion effect with the brake disc.

关 键 词：CASO4晶须 树脂基制动材料 摩擦时间 温度 磨损机理 

分 类 号：TB332[一般工业技术—材料科学与工程] TH117.1[机械工程—机械设计及理论]