制动装置耐低温橡胶密封材料的研制及其与润滑脂适配性的研究  

Development of Low-temperature Resistant Rubber Sealing Material for Braking Device and Its Compatibility with Lubricating Grease

作　　者：刘金朋 刘志国 曹江勇 张晓林 丁琦 宋传云 LIU Jinpeng;LIU Zhiguo;CAO Jiangyong;ZHANG Xiaolin;DING Qi;SONG Chuanyun(Qingdao Borui Zhiyuan Anti-vibration Technology Co.,Ltd,Qingdao 266114,China;Qingdao Sifang Rolling Stock Research Institute Co.,Ltd,Qingdao 266031,China)

机构地区：[1]青岛博锐智远减振科技有限公司,山东青岛266114 [2]中车青岛四方车辆研究所有限公司,山东青岛266031

出　　处：《橡胶工业》2024年第3期211-215,共5页China Rubber Industry

摘　　要：分析轨道车辆制动装置橡胶密封件在低温下的失效形式及原理,通过优化配方研制耐低温橡胶密封材料,研究耐低温橡胶密封材料与润滑脂的适配性,通过橡胶密封件的低温密封试验以及疲劳试验对耐低温橡胶密封材料进行验证。结果表明:Molykote 55润滑脂对耐低温橡胶密封材料的体积变化率、物理性能及耐低温性能影响较小,适合作为制动装置的润滑脂;所制橡胶密封件可满足-55℃低温气密性以及疲劳寿命要求。The failure modes and principles of the rubber sealing part in railway vehicle braking device at low temperature were analyzed,the low-temperature resistant rubber sealing material was developed by optimizing the formula,the compatibility between the low-temperature resistant rubber sealing material and the lubricating grease was studied,and the low-temperature sealing test and fatigue test of the rubber sealing part were conducted to verify the low-temperature resistant rubber sealing material.The results showed that Molykote 55 lubricating grease had little effect on the volume change rate,physical properties,and lowtemperature resistance of the low-temperature resistant rubber sealing material,making it suitable as a lubricating grease for the braking device.The rubber sealing part produced could meet the requirements of the low-temperature airtightness and fatigue life at-55℃.

关 键 词：耐低温密封材料 橡胶密封件 丁腈橡胶 润滑脂 制动装置 

分 类 号：TQ336.42[化学工程—橡胶工业]