Journal of Radiation Research and Radiation Processing ›› 2019, Vol. 37 ›› Issue (1): 10201-010201.doi: 10.11889/j.1000-3436.2019.rrj.37.010201

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Radiation vulcanization and properties of hydrogenated butadiene-acrylonitrile rubber

CHENG Anren1(),DAI Pei1(),YANG Hongjun2,YUAN Ke3,JIAO Yang1(),LU Yongjun1,WANG Liancai1,BAO Mao1   

  1. 1. Beijing Research Center for Radiation Application, Beijing 100015, China
    2. Troop 63963, Beijing 100072, China
    3. Inner Mongolia First Machinery Group Corporation, Baotou 014032, China
  • Received:2018-09-30 Revised:2018-11-16 Accepted:2018-11-16 Online:2019-02-20 Published:2019-01-30
  • Contact: Yang JIAO E-mail:rubbertire@163.com;jiaoyang7171@sina.com
  • About author:>CHENG Anren was born in October 1972, and received his bachelor’s degree from Hubei University of Technology in 1997. Now he is a senior engineer at Beijing Research Center of Radiation Application, majoring in radiation modification and application of polymer materials. E-mail: rubbertire@163.com|DAI Pei was born in July 1987, and received his doctoral degree from Beijing University of Chemical Technology in 2016. Now he is a post doctor at Beijing Research Center of Radiation Application, majoring in radiation preparation and properties of functional materials. E-mail: daipei008@126.com|JIAO Yang, associate professor, E-mail:jiaoyang7171@sina.com
  • Supported by:
    National Natural Science Foundation of China (11805016), China Postdoctoral Science Foundation (2018M631377), and Building of Innovative Team Plan (IG201703N)

Abstract:

Vulcanized hydrogenated butadiene-acrylonitrile rubber (HNBR) without the use of vulcanization reagents was cross-linked by γ-ray irradiation. The vulcanization behavior was investigated at the absorbed dose range of 0 ~ 300 kGy. The micromorphology and dynamic mechanical properties were characterized and analyzed by dynamic mechanical analysis and scanning electron microscope, respectively. The results indicated that the HNBR sample was vulcanized by γ-ray irradiation without vulcanization reagents. With an increase in the absorbed dose, the elastic torque simultaneously increased when the mold filling deformation decreased due to the cross-linked reaction of HNBR. The HNBR sample exhibited excellent mechanical properties and oil resistance when the absorbed dose of 200~250 kGy. Compared with the chemical-vulcanized HNBR, the retention rate of tensile strength and the elongation at break of radiation-vulcanized HNBR increased by 24% and 39%, respectively, in air at 150 oC for 70 h. Moreover, the compression set of the radiation-vulcanized HNBR (46.20%) was lower than that of chemical-vulcanized HNBR (58.56%) after being immersed in 903# oil at 150 oC for 24 h. The results prove that radiation vulcanization improves hot-air and hot-oil aging resistance and is, thus, expected to achieve both high performance and long service life.

Key words: Hydrogenated butadiene-acrylonitrile rubber, Radiation vulcanization, Technical property, Aging

CLC Number: 

  • TL13