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The Change of the Cyclic Aging Characteristics under Salt-fog/Heating on Silicone Rubber by ATH Additions  

Lee, Chung (Korea Atomic Energy Research Institute)
Kim, Ki-Yup (Korea Atomic Energy Research Institute)
Kim, Gyu-Baek (Department of Safety Engineering, Dongguk University)
Ryu, Boo-Hyung (Department of Safety Engineering, Dongguk University)
Publication Information
Journal of the Korean Society of Safety / v.20, no.3, 2005 , pp. 58-63 More about this Journal
Abstract
In this research, silicone rubber with additions of inorganic filler, alumina trihydrate$(Al(OH)_3\;:\;ATH)$, was aged acceleratedly and cyclically by the salt-fog and heating. The optimum amount of ATH addition to silicone rubber have been investigated by measurements of leakage current in the change of electrical properties and tensile strength, %elongation in mechanical properties and FT-IR, TG, SEM in the change of the chemical properties. With regard to un-aged silicone rubber, as the ATH addition amount increases, conductive path formation time was shortened in the electrical properties and tensile strength was increased, %elongation was decreased. In case of identical ATH addition amount, as cyclic aging increases, surface resistivity, tensile strength and %elongation were decreased. Considering the cyclic aging, the most effective amount of ATH addition was about 90phr.
Keywords
cyclic aging; silicone rubber; ATH; FT-IR; SEM;
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