摘要
为使腰果壳油-酚醛树脂基摩擦材料满足重型机械和设备的使用要求,基于干法工艺,采用丁腈橡胶对腰果壳油-酚醛树脂进行共混二次改性,研究不同含量丁腈橡胶对摩擦材料力学性能、耐热性能、摩擦磨损性能的影响。结果表明:丁腈橡胶的加入能够提高摩擦材料的冲击强度,同时降低材料的弹性模量和剪切模量,但随着橡胶含量的增加,摩擦材料的耐热性逐渐下降;丁腈橡胶含量的增加会提升摩擦材料的摩擦因数稳定性并能够保证较高的低温摩擦因数,当橡胶质量分数5%时,摩擦材料表现出最好的抗磨损性能。
In order to make Cashew shell oil（CNSL）-phenolic resin （PF） matrix friction material meet the demand for utilization in field of heavy machinery and equipment, based on the dry process, three groups of the Cashew shell oil-phenolic resin matrix friction materials secondly blending modified by different content of nitrile rubber（NBR） powder were prepared, and the specimens＇ mechanical properties , heat resistance , friction and wear performance was discussed.Experimental results show that;the addition of NBR can improve the impact strength,reduce the elastic and shear modulus.As the content of NBR increases,heat resistance of the specimens gradually decline.Specimens with 10% NBR content could ensure higher friction coefficient at relatively low temperature, while the specimens modified by 5% NBR content show lowest wear rate.
出处
《润滑与密封》
CAS
CSCD
北大核心
2016年第2期42-46,111,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51472203)
陕西省科技统筹创新工程计划项目(2011KTCQ01-06)
关键词
丁腈橡胶
摩擦因数
磨损率
摩擦材料
酚醛树脂
nitrile rubber
friction coefficient
wear rate
friction material
phenolic resin
