芳砜纶在制动摩擦材料中的应用  

Application of polysulfonamide fibers in brake friction materials

作　　者：王慧[1] 林志峰[1] 吕亚非[1] 

机构地区：[1]北京化工大学新型高分子材料制备与加工北京市重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2009年第6期48-51,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学基金(50673012)

摘　　要：采用芳砜纶、玄武岩和硅灰石为纤维增强体,锆英石为磨料,石墨为固体润滑剂,蛭石和重晶石分别为降低噪音和成本的填料,腰果酚型苯并噁嗪改性的酚醛树脂为基体,制备了含芳砜纶的制动摩擦材料。测定了摩擦材料的热衰退性、热恢复性和体积磨损率。结果表明,芳砜纶具有降低摩擦系数和改善体积磨损率的作用,含9%体积分数芳砜纶的制动摩擦材料具有最佳摩擦性能。Non-metallic brake friction materials containing polysulfonamide fibers （PSA）, basalt fibers, and wollastonite as reinforcements, zircon as abrasive, graphite as solid lubricant, vermiculite as noise-reducing filler, barite as cost-reducing filler, and cardanol-based benzoxazine modified phenolic resin as binder have been formulated and their composites were prepared. The presence of PSA was found to depress the friction coefficient and improve the wear rate of the friction composites. The optimal friction performance was obtained with a volume fraction of 9 % of PSA.

关 键 词：芳砜纶 制动摩擦 摩擦性能 

分 类 号：TB332[一般工业技术—材料科学与工程]