Thermal-oxidative Aging of Nitrile Rubber5171Sealing Element
Received:February 25, 2013  Revised:July 01, 2013
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DOI:10.7643/issn.1672-9242.2013.04.001
KeyWord:Thermal-oxidative Aging of Nitrile Rubber5171Sealing Elementnitrile rubber  sealing material  thermal-oxidative aging
                 
AuthorInstitution
ZHANG Kai Southwest Technology and Engineering Research Institute,Chongqing,China
WANG Feng Southwest Technology and Engineering Research Institute,Chongqing,China
ZHU Lei Southwest Technology and Engineering Research Institute,Chongqing,China
XU Ze-qi Southwest Technology and Engineering Research Institute,Chongqing,China
LUO Tian-yuan Southwest Technology and Engineering Research Institute,Chongqing,China
LIU Jie Southwest Technology and Engineering Research Institute,Chongqing,China
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Abstract:
      Thermal oxidative aging test of nitrile rubber5171was carried out. The thermal oxidative aging behaviors were studied combining with macro and micro performance analysis before and after aging. The results showed that the physical and mechanical properties of nitrile rubber5171declined greatly during earlier stage; relative content of oxygen at surface and the crosslink density increases apparently, indicating that the crosslink reaction is the main reactions of nitrile rubber5171during aging; relative content of carbon at surface increases with the extension of aging time, while oxygen and nitrogen decreasing, indicating that the antioxidant D and dibutyl sebacate diffuses and migrates from inside to the outside of nitrile rubber5171.
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