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Effects of polyvinylsilicone oil with condensed aromatics on the radiation resistance of heat‐curable silicone rubber
Author(s) -
Jiang Zhigang,
Zhang Jie,
Feng Shengyu
Publication year - 2006
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.24487
Subject(s) - silicone rubber , silicone oil , materials science , silicone , radiation resistance , natural rubber , composite material , heat resistance , irradiation , polymer chemistry , physics , nuclear physics
Polyvinylsilicone oil with condensed aromatics (called C 1 gum) was synthesized by Diels‐Alder reaction of polyvinylsilicone oil and acenaphthenecyclone, and was used as an additive in heat‐curable silicone rubber. The resistance to irradiation of the silicone rubber obtained was investigated by γ‐rays at doses up to 300, 500, and 1000 kGy in vacuum. The dose rate was 150 kGy/min. After irradiation, the average molecular weight between crosslinks ( M c ) and mechanical properties of the silicone rubber were determined. The results show that C 1 gum can effectively improve the radiation resistance of silicone rubber. When the amount of C 1 gum used in silicone rubber changes from 2 to 14 parts per hundred silicone gum, the radiation protection effects increase with increasing amount of C 1 gum. The radiation protection mechanism of C 1 gum was also discussed. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 1937–1942, 2006