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http://dx.doi.org/10.4313/JKEM.2019.32.3.213

A Study on Flame Retardancy and Tracking Properties of Expanded Vermiculite Added Silicon Rubber for Wire  

Park, Seung Ho (Department of Safety Engineering, Korea National University of Transportation)
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.32, no.3, 2019 , pp. 213-218 More about this Journal
Abstract
In this study, a high-temperature vulcanizing (HTV) method was used to achieve a shore a hardness of 70. The basic base was composed of 60% silicon gum (GUM) which is a high-viscosity polymer, 30% fumed silica (FS), and 5% of plasticizer. The GUM and FS were mixed well with less than 1% silane to improve rubber strength. Expanded vermiculite was added as a filler at 10%, 15%, and 20%. The curing conditions were $170^{\circ}C$ for 10 min and a molding method was applied. We report herein, the results of inorganic analysis and flame-retardant and tracking tests on the expanded vermiculite. The flame retardance and tracking test outcomes for a shore a hardness of 70 were found to be optimal when the expanded vermiculite content was 10%.
Keywords
Silicone rubber; HTV (high temperature vulcanizing); Expanded vermiculite; Flammability rating;
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Times Cited By KSCI : 2  (Citation Analysis)
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