湿式纸基摩擦材料的压缩回弹性能  

Compression-Resilience Property of Wet Paper-Based Friction Materials

作　　者：梁云[1] 张日盈 张春辉[1] LIANG Yun;ZHANG Riying;ZHANG Chunhui(State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2020年第8期82-90,共9页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家重点研发计划项目(2017YFB0308101)。

摘　　要：通过对原料特性和配方进行调节,探究了棉纤维打浆度、碳纤维形态、摩擦粉含量和树脂弹性模量对湿式纸基摩擦材料压缩回弹性的影响,同时设计了4种具有不同压缩回弹性的纸基摩擦材料,分析了压缩回弹性对湿式纸基摩擦材料摩擦磨损性能的影响。研究结果表明:棉纤维打浆度在20 oSR以上时,材料具有良好的尺寸稳定性;长3 mm的短切碳纤维、乙醇溶剂型高弹性模量粘结树脂可提高样品的尺寸稳定性;摩擦粉的加入可提高材料的稳定压缩率;压缩回弹性对摩擦磨损性能有重要的影响,当湿式纸基摩擦材料的永久形变率在4.0%以下、稳定压缩率在7.0%以上时,材料的摩擦磨损性能较为优异。The effects of beating degree of cotton fiber,carbon fiber morphology,friction powder content and resin elastic modulus on the compression-resilience property of wet paper-based friction materials were investigated by adjusting the raw material characteristics and formula.And 4 paper-based friction materials with different compression-resilience property were prepared to explore the influence of compression-resilience property on the friction and wear performance.The results show that the material has good dimensional stability when the beating degree of cotton fiber is above 20 oSR;the short carbon fiber of 3 mm and ethanol solvent type resin with high elastic modulus can improve the dimensional stability of the samples;the stable compression ratio can be improved by adding the friction powder;the compression-resilience property has significant influence on friction and wear performance.The friction and wear performance of the material is rather better when the permanent deformation rate of the wet paper-based friction material is below 4.0%and the stable compression ratio is above 7.0%.

关 键 词：摩擦材料 棉纤维 树脂 压缩回弹性 摩擦磨损性能 

分 类 号：TB332[一般工业技术—材料科学与工程]