碳纤维增强树脂基摩擦材料摩擦磨损性能
般艳飞刘莹丁郭毕勇强
（南昌大学机电工程学院，南昌330031）
文摘为提高树脂基摩擦材料摩擦因数稳定性，改善其抗热衰退性能。以碳纤维作为增强纤维，采用热压成型工艺制备碳纤维增强树脂基摩擦材料；用XD-MSM型定速摩擦试验机测定摩擦磨损性能，研究了不同含量碳纤维增强对树脂基摩擦材料摩擦磨损性能的影响；利用VK-X200三维激光扫描显微镜观察了摩擦材料磨损后表面的微观形貌并探讨其磨损机理。结果表明，碳纤维增强树脂基摩擦材料的硬度、压缩强度和剪切强度均得到提高，并随碳纤维含量的增加而逐渐增大；碳纤维增强作用提高了树脂基摩擦材料的耐磨性和摩擦因数的稳定性，改变了树脂基摩擦材料的摩撑磨损形式；碳纤维含量为4wt%的增强树脂基摩擦材料摩擦因数稳定性较高，抗热表退性能较好，磨损机制主要为疲劳磨损。
关键调碳纤维，树脂基摩擦材料，摩擦磨损
中图分类号：TB332
D0I:10.3969/j. issn. 10072330.2016.02.007
Friction and Wear Properties of Carbon Fiber Reinforced
Resin-BasedFrictionMaterial LIUYing
BIYongqiang
YINYanfei
DINGGuo
(School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031)
AbstractTo improve the friction coefficient stability of resin-based friction material, and improve the property of inhibit thermal degradation. Carbon fibers as reinforcing fibers, carbon fibers reinforced resin-based friction materi-als were prepared by themoforming process. Friction and wear properties were measured through XD-MSM type con-stant-speed friction tester, the effects of different carbon fiber content on friction and wear properties of resin-based friction material were studied. Won surface morphology was observed by using VK-X200 three-dimensional laser scan-ning microscope, and wear mechanism was discussed. The results show that the hardness, compressive strength and shear strength of carbon fibers reinforced resin-based friction materials were improved, and increased gradually with the increase of carbon fiber content. Carbon fiber improved the friction coefficient stability of resin-based friction mate rial, enhanced the wear resistance and changed the form of friction and wear. The properties of friction coefficient sta bility and inhibit thermal degradation was great, and the wear mechanism was fatigue wear when the mass percentage of carbon fiber was 4wt% in the resin-based friction material.
Key wordsCarbon fiber,Resin-based friction material,Friction and wear
0引言
随着我国交通运输的不断发展，对制动摩擦材料性能的要求也越来越高。其中，树脂基摩擦材料具有摩擦磨损性能优良、制备工艺简单、性能可设计性强和成本低等优点，其应用越来越广[]。但树脂基摩
擦材料在制动过程中，摩擦因数稳定性较差，易发生高温热衰退，较大地限制了其应用前景[2]。为达到摩擦材料应用工况的要求，多种增强纤维可用于树脂基摩擦材料的填充改性，如玻璃纤维，金属纤维，碳纤维，陶瓷纤维等，其中，碳纤维具有稳定的摩擦因数，
收稿日期：201508-24
基金项目：江西省研究生创新专项资金立项项目（YC2014-S017）；南昌大学校级训练计划项目(2014133）作者简介：股艳飞，1992年出生，硕士研究生，主要从事摩擦材料性能研究。E-mail:yfyin_ncu@126.com 通讯作者：刘莹，Email：lyingncu@163.com
宇航材料工艺万方数据
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2016年第2期