文章摘要
Development of Low-temperature Resistant Rubber Sealing Material for Braking Device and Its Compatibility with Lubricating Grease
Received:September 27, 2022  Revised:September 27, 2022
DOI：10.12136/j.issn.1000-890X.2024.03.0211
Key Words: low-temperature resistant sealing material；rubber sealing part；nitrile rubber；lubricating grease；braking device
Author NameAffiliationE-mail
LIU Jinpeng* Qingdao Borui Zhiyuan Anti-vibration Technology Co.，Ltd ljp0103840@126.com 
LIU Zhiguo Qingdao Borui Zhiyuan Anti-vibration Technology Co.，Ltd  
CAO Jiangyong Qingdao Borui Zhiyuan Anti-vibration Technology Co.，Ltd  
ZHANG Xiaolin Qingdao Borui Zhiyuan Anti-vibration Technology Co.，Ltd  
DING Qi Qingdao Borui Zhiyuan Anti-vibration Technology Co.，Ltd  
SONG Chuanyun Qingdao Sifang Rolling Stock Research Institute Co.，Ltd  
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Abstract:
      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 low-temperature 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 ℃.
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