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  • Research on Controllable Ar...
    Xu, Chi; Jia, Zhidong; Guan, Ruiyang

    IEEE transactions on dielectrics and electrical insulation, 06/2023, Letnik: 30, Številka: 3
    Journal Article

    Chalking of silicone rubber (SR) is a universal and important aging phenomenon. However, performing chalking simulation to study the aging performance of SR in the laboratory is difficult. In this study, a controllable artificial chalking method, which was based on selective scission reactions using methylcyclohexane (MCH) and diethylamine (DEA) as solvents, and tetramethylammonium hydroxide as the catalyst, was developed. Through controlling the ratio between DEA and MCH, different chalking degrees of SR could be realized artificially. The macroscopic observation, scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy were conducted to compare the differences of samples with various chalking degrees. Furthermore, the control mechanism of the degree of chalking and the function of DEA during the artificial chalking process was elucidated. The results demonstrated that the artificial chalking method was feasible and could help identify the anti-aging ability of SR.