本文選題：聚酰亞胺基摩擦材料 + 增摩填料�。� 參考：《大連交通大學(xué)》2015年碩士論文

【摘要】：在聚合物基摩擦材料制備中,材料的選擇和組合方式繁多。不同使用條件的摩擦材料,對(duì)樹脂基體、增強(qiáng)組元的選擇、及其制備技術(shù)都有一定的要求。酚醛樹脂是目前樹脂基摩擦材料常用的基體,但是在摩擦制動(dòng)的高溫高速條件下,酚醛樹脂作為基體制備的摩擦材料性能并不能完全滿足要求。本文選用耐熱性和耐磨性能優(yōu)異的MC1833多元共聚聚酰亞胺樹脂代替酚醛樹脂作為摩擦材料基體,添加氧化鋁和二氧化硅兩種增摩填料制備聚合物基摩擦材料,研究其對(duì)聚酰亞胺基摩擦材料性能的影響。結(jié)果表明:適當(dāng)添加氧化鋁可以起到增加并穩(wěn)定摩擦系數(shù)的作用。添加15%含量氧化鋁的試樣摩擦系數(shù)高而平穩(wěn)。添加4%含量Si O2的試樣與不加Si O2的相比,摩擦系數(shù)明顯提升,磨損率有所降低;隨著Si O2含量的繼續(xù)增大,摩擦系數(shù)變化不明顯,磨損率大幅度增加。選用0.4~0.6mm粒度Si O2的試樣磨損率在加入三種Si O2粒度(0.1~0.2 mm,0.3~0.4 mm和0.4~0.6 mm)的試樣中最小。混雜增摩填料的試樣中加入6%含量Si O2、14%含量氧化鋁和8%含量Si O2、12%含量氧化鋁的試樣高速時(shí)摩擦系數(shù)較高且穩(wěn)定,具有明顯的抗熱衰退性和最低的磨損率。
[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.
【學(xué)位授予單位】：大連交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB39

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本文編號(hào)：2088013