芳纶浆粕和纳米钛酸钠晶须在汽车摩擦材料中的协同效应  

Synergistic Effect of Aramid Pulp and Nano Sodium Titanate Whisker in Friction Materials for Automotive

作　　者：郭客[1,2] 张志强 宋仁伯[3] 许洁[3] 于浩男 GUO Ke;ZHANG Zhiqiang;SONG Renbo;XU Jie;YU Haonan(School of Chemical Engineering,Liaoning University,of Science and Technology,Anshan 117022,China;Ansteel Group Mining Design&Research Institute,Anshan 114004,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing J00083,China)

机构地区：[1]辽宁科技大学化学工程学院,鞍山117022 [2]鞍钢集团矿业设计研究院有限公司,鞍山114004 [3]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料研究学报》2020年第4期304-310,共7页Chinese Journal of Materials Research

摘　　要：以包括酚醛树脂、芳纶浆粕、纳米钛酸钠晶须、氧化铝、重晶石和二硫化钼的简化配方为基础制备一种摩擦材料,研究芳纶浆粕和纳米钛酸钠晶须的含量对摩擦材料的物理力学性能和摩擦磨损性能的影响。结果表明:随着芳纶浆粕含量的提高摩擦材料试样的布氏硬度呈现提高的趋势;当芳纶浆粕与钛酸钠晶须的比例为3:1时,材料的冲击强度达到最大值0.392 J/cm2,两种增强纤维的均匀混合为摩擦过程中产生高内聚强度的摩擦膜提供了基础,且这个比例产生最佳的协同效应,摩擦系数稳定在0.38~0.45,磨损率为5%。Friction materials were prepared based on a simple formulation with six ingredients(phenolic resin, aramid pulp, nano sodium titanate whisker, alumina, barite, molybdenum disulfide). Hardness,impact strength, friction coefficient, wear rate, and morphology of sliding surfaces were carefully examined to investigate the effect of the two different fibrous ingredients, i.e. aramid pulp and nano sodium titanate whisker, in the friction material on various physical and mechanical properties and friction properties.The results show that the Rockwell hardness of friction material increased with the increase of the content of aramid pulp in the formula. When the ratio of aramid pulp to sodium titanate whisker is 3: 1, the maximum impact strength of the material reached 0.392 J/cm2. The uniform mixing of two reinforcing fibers provided a basis for the formation of high cohesion friction film during the friction process. When the ratio was 0.75, the best synergistic effect was obtained. At this time the friction coefficient was stable between 0.38 and 0.45, and the wear rate was 5%.

关 键 词：复合材料 协同效应 摩擦磨损 芳纶浆粕 纳米钛酸钠晶须 

分 类 号：U465[一般工业技术—材料科学与工程]