文章摘要
Structure and Properties of Polymerization Stabilized Nitrile Rubber
Received:March 24, 2022  Revised:March 24, 2022
DOI：10.12136/j.issn.1000-890X.2023.07.0505
Key Words: polymerization stabilized nitrile rubber；reactive antioxidant；microstructure；hot air aging
Author NameAffiliationE-mail
FAN Yongjiang PetroChina Lanzhou Petrochemical Academy 328898237@qq.com 
GAO Weiguang PetroChina Lanzhou Petrochemical Academy  
LI Donghong PetroChina Lanzhou Petrochemical Academy  
LI Donghong PetroChina Lanzhou Petrochemical Academy  
QU Jinlei Qingdao University of Science and Technology  
YANG Ronghao Sino-German College of Engineering，Qingdao University of Science and Technology  
LIU Li* Qingdao University of Science and Technology qdliuli@163.com 
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Abstract:
      The microstructure of raw rubber and the properties of the compound of polymerization stabilized nitrile rubber DN3305（referred to as DN3305） were studied and compared with ordinary nitrile rubber 3305E（referred to as 3305E）. The results showed that，the molecular structure of DN3305 was not much different from that of 3305E，the molecular weight and its distribution were close to 3305E，and the glass transition temperature of DN3305 was higher than that of 3305E. The Mooney viscosity of DN3305 compound was lower than that of 3305E compound，the vulcanization characteristics were similar，and the processability was better. The tensile stress at 300% elongation and tensile strength of the DN3305 vulcanizate were higher than those of the 3305E vulcanizate. After hot air aging at 110 ℃ for 28 days，the DN3305 vulcanizate still had some elasticity，showing better hot air aging resistance，and its oil resistance was also better. For the nitrile rubber products which did not require good low-temperature performance， polymerization stabilized nitrile rubber could be used to replace ordinary nitrile rubber to achieve excellent high-temperature resistance.
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