增摩填料对聚酰亚胺基摩擦材料摩擦磨损性能的影响

发布时间：2018-07-01 14:02

本文选题：聚酰亚胺基摩擦材料 + 增摩填料　；参考：《大连交通大学》2015年硕士论文

【摘要】：在聚合物基摩擦材料制备中,材料的选择和组合方式繁多。不同使用条件的摩擦材料,对树脂基体、增强组元的选择、及其制备技术都有一定的要求。酚醛树脂是目前树脂基摩擦材料常用的基体,但是在摩擦制动的高温高速条件下,酚醛树脂作为基体制备的摩擦材料性能并不能完全满足要求。本文选用耐热性和耐磨性能优异的MC1833多元共聚聚酰亚胺树脂代替酚醛树脂作为摩擦材料基体,添加氧化铝和二氧化硅两种增摩填料制备聚合物基摩擦材料,研究其对聚酰亚胺基摩擦材料性能的影响。结果表明:适当添加氧化铝可以起到增加并稳定摩擦系数的作用。添加15%含量氧化铝的试样摩擦系数高而平稳。添加4%含量Si O2的试样与不加Si O2的相比,摩擦系数明显提升,磨损率有所降低;随着Si O2含量的继续增大,摩擦系数变化不明显,磨损率大幅度增加。选用0.4~0.6mm粒度Si O2的试样磨损率在加入三种Si O2粒度(0.1~0.2 mm,0.3~0.4 mm和0.4~0.6 mm)的试样中最小。混杂增摩填料的试样中加入6%含量Si O2、14%含量氧化铝和8%含量Si O2、12%含量氧化铝的试样高速时摩擦系数较高且稳定,具有明显的抗热衰退性和最低的磨损率。
[Abstract]:There are various selection and combination methods in the preparation of polymer based friction materials. The friction materials with different use conditions have certain requirements for the selection of the resin matrix, the selection of the reinforced component and the preparation technology. The phenolic resin is the common base of the current resin based friction materials, but the phenolic tree is the phenolic tree under the high temperature and high speed condition of the friction braking. The properties of the friction materials prepared by fat as a matrix can not satisfy the requirements completely. In this paper, the MC1833 polyimide polyimide resin with excellent heat resistance and wear resistance is selected as the matrix of the friction material instead of the phenolic resin, and two kinds of friction material with alumina and silica are added to the preparation of polymer based friction materials, and the polyimide is studied. The effect of the properties of the base friction material shows that proper addition of alumina can increase and stabilize the friction coefficient. The friction coefficient of the sample added with 15% content of alumina is high and stable. The friction coefficient of the sample adding 4% Si O2 increases obviously, the wear rate decreases, and the content of Si O2 continues. In addition, the friction coefficient change is not obvious and the wear rate increases greatly. The wear rate of sample with 0.4~0.6mm size Si O2 is the smallest in three Si O2 particles (0.1~0.2 mm, 0.3~0.4 mm and 0.4~0.6 mm). At high speed, the friction coefficient is high and stable, and has obvious thermal decay resistance and the lowest wear rate.
【学位授予单位】：大连交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB39

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