Journal of Radiation Research and Radiation Processing ›› 2020, Vol. 38 ›› Issue (3): 1-9.doi: 10.11889/j.1000-3436.2020.rrj.38.030101

• REVIEW •    

Recent progress in irradiation-induced aging of silicones

CHEN Hongbing(),QIN Ziming,WANG Pucheng,LIU Bo,HUANG Wei   

  1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621000, China
  • Received:2020-03-30 Revised:2020-04-28 Accepted:2020-04-28 Online:2020-06-20 Published:2020-06-18
  • About author:CHEN Hongbing (male) was born in March 1986, and obtained his doctoral degree from Sichuan University in 2013, majoring in polymer chemistry and physics, associate professor, engaging in radiation chemistry and polymer flame retardation. E-mail:
  • Supported by:
    Science Challenge Project(TZ2018004);National Natural Science Foundation of China(U1530259)


Silicone rubber are widely used in engineering for their excellent properties. When exposed to high-energy rays or particles, such as existing in aerospace and nuclear power plant applications, silicones would age. The irradiation-induced crosslinking and radiolysis lead to decreasing of material properties and thus influencing the service lifetime. Many factors affect the aging behaviors and make it hardly to predict. This article reviews the recent research progresses in this field and summarizes the effects of absorbed dose, dose rate, environment factors, and additives on radiation aging of materials. In addition, the characterization, simulation and modeling of irradiation-induced aging are also discussed. The thorough survey of the current literatures offers useful guidance to predict lifetime of the silicones.

Key words: Silicone rubber, Irradiation, Aging, Review

CLC Number: 

  • TL13