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http://dx.doi.org/10.4313/JKEM.2021.34.5.364

A Study on Dielectric Properties of Flame-Retardant Silicone Rubber Due to Silica Amount Change  

Lee, Sung Ill (Department of Safety Engineering, Korea National University of Transportation)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.34, no.5, 2021 , pp. 364-370 More about this Journal
Abstract
In this study, the dielectric properties of flame retardant silicone rubber mixed with the amount of silica 50~65 phr were measured at frequencies ranging from 1 to 2.7 MHz and temperature ranges from 30℃ to 160℃. The permittivity decreased with higher frequencies and higher temperatures, and tanδ are thought to have decreased due to the increased heat oxidation of the methyl group bound to Si, which increased the hardness of silicone rubber. FT-IR analysis of specimen mixed with SiO2 of 50~65 phr showed oscillations of OH groups bound to SiO2 between wavenumber 3,600 and 3,300. As a result of analyzing surface components by Energy Dispersive X-ray (EDX) on all specimens mixed with SiO2 of 50 to 65 phr, all specimens contained Si, and the analysis by field emission scanning electron (FE-SEM) confirmed that about 1~5 ㎛ particles were distributed regularly on the surface of the specimens.
Keywords
Permittivity; Energy dispersive X-ray (EDX); Field emission scanning electron (FE-SEM);
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Times Cited By KSCI : 1  (Citation Analysis)
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