新型填料对高摩复合材料摩擦磨损性能影响及机制

发布时间：2018-01-09 10:35

本文关键词：新型填料对高摩复合材料摩擦磨损性能影响及机制　出处：《复合材料学报》2017年10期 　论文类型：期刊论文

【摘要】：采用干法热压成型工艺制备高摩复合材料,研究了基体材料腰果壳油改性酚醛树脂(CPR)与丁晴橡胶(NR)的质量比和新型高性能填料(主要成分为石墨粉Al2O3、MoS2、Fe粉)含量对高摩复合材料摩擦磨损性能的影响规律。在摩擦磨损试验机上测试了高摩复合材料的摩擦磨损性能,利用激光共聚焦显微镜、扫描电镜对摩擦表面形貌、磨屑进行观察和分析,借助EDS测定摩擦表面成分的变化。结果表明,随着CPR与NR质量比的增加,高摩复合材料的耐热性能、结合性能大幅提高,且具有较好的摩擦磨损性能。当高性能填料含量较低时,磨损表面出现大量连续的真实接触面,磨损机制为磨粒磨损和黏着磨损;当高性能填料含量较高时,真实接触面积减少,磨损表面剥落严重,并出现较多的裂纹,其主要磨损形式转变为磨粒磨损和疲劳磨损。随着高性能填料含量的增加,摩擦表面的元素从均匀分布逐渐转变为局部富集,磨粒的尺寸逐渐变大。
[Abstract]:The dry hot pressing process for preparing high friction composite materials, the matrix material of cashew nut shell oil modified phenolic resin (CPR) and nitrile rubber (NR) and the mass ratio of the new high performance packing (the main component of graphite powder Al2O3, MoS2, Fe powder) content of the high friction composite effect of friction wear the performance in friction and wear test machine friction and wear properties of high friction composite material were tested, using laser scanning confocal microscope, scanning electron microscope on the surfaces of friction and wear debris were observed and analyzed, with the change of EDS determination of friction surface composition. The results showed that with the increase of CPR and NR mass ratio, high heat resistance the friction of composite materials, combined with a substantial increase in performance, and has good friction and wear properties of high performance. When the filler content is low, the wear surface surface contact with a large number of real continuous, the wear mechanism is abrasive wear and adhesive wear; When the high performance of the filler content, the real contact area decreased, wear surface spalling, and the emergence of more cracks, the main wear mechanism is abrasive wear and fatigue wear. High performance with increasing filler content, the friction surface of the elements from the uniform distribution gradually transformed into local enrichment, abrasive grain size gradually larger.

【作者单位】：贵州大学材料与冶金学院;贵州大学高性能金属结构材料与制造技术国家地方联合工程实验室;贵州大学贵州省材料结构与强度重点实验室;
【基金】：贵州省工业攻关项目(黔科合GY字(2013)3037)
【分类号】：TB332
【正文快照】： 网络出版地址:www.cnki.net/kcms/detail/11.1801.TB.20170105.1636.008.html引用格式:龚乾江,徐祥,杨明.新型填料对高摩复合材料摩擦磨损性能影响及机制[J].复合材料学报,2017,34(10):2171-2181.GONG Qianjiang,XU Xiang,YANG Ming.Research on the effect and mechanism of

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