文献类型：期刊文献

英文题名：Synthesis of Cerium-containing Polymethylphenyl Silicone and Its Antioxidant Effect on Fluorosilicone Rubber

作者：Guan, Yong[1,2];Hu, Jian[1];Huang, Yong-Kang[1];You, Yang[1];Zhang, Huan-Yao[1];Zheng, An-Na[1];Xu, Xiang[1,2];Wei, Da-Fu[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Specially Funct Polymer Mat & Related Tec, Shanghai 200237, Peoples R China

年份：2019

卷号：37

期号：8

起止页码：783

外文期刊名：CHINESE JOURNAL OF POLYMER SCIENCE

收录：;EI(收录号：20212810632530);WOS:【SCI-EXPANDED(收录号:WOS:000474392800007)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Nos. 51573043 and 21805086) and the Fundamental Research Funds for the Central Universities (Nos. 222201817001 and 222201814004). This research was supported by the Shanghai Leading Academic Discipline Project (No. B502) and the Shanghai Key Laboratory Project (No. ZD20170203). Support from FSIR Advanced Material Co., Ltd. was also gratefully acknowledged.

语种：英文

外文关键词：Polymethylphenyl silicone; Cerium; Fluorosilicone rubber; Thermal stability

摘要：As an essential elastomer used in edge technologies, fluorosilicone rubber (FSR) suffers serious oxidative ageing problem when serving at high temperature. Cerium oxide is generally used as an antioxidant additive but remains unsatisfactory. In order to obtain better antioxidant effect on improving the thermal stability of FSR, a kind of cerium-containing polymethylphenyl silicone (PSI-Ce) was synthesized and the structure was verified by Fourier-transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (H-1-NMR). Due to the homogeneous dispersion on molecular scale, PSI-Ce imposed much better antioxidant effect than the commercial CeO2 did, no matter from isothermal degradation at 320 degrees C or thermal-oxidative ageing test at 230 degrees C. In particular, after ageing for 72 h, FSR/PSI-Ce (2 phr) maintained 82% of tensile strength and 63% of elongation at break, in comparison to the corresponding values of 48% and 42% for FSR/CeO2 (2 phr). Moreover, 2 phr PSI-Ce was equivalent to 0.046 phr CeO2 according to cerium element conservation.