한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제32권3호
  • /
  • Pages.213-218
  • /
  • 2019
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  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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팽창질석 첨가에 따른 전선용 실리콘 고무의 난연 및 트래킹 특성에 관한 연구

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

  • 박승호 (한국교통대학교 안전공학과) ;
  • 이성일 (한국교통대학교 안전공학과)
  • Park, Seung Ho (Department of Safety Engineering, Korea National University of Transportation) ;
  • Lee, Sung Ill (Department of Safety Engineering, Korea National University of Transportation)
  • 투고 : 2019.02.26
  • 심사 : 2019.04.08
  • 발행 : 2019.05.01
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초록

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%.

키워드

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Fig. 1. Tracking test sample and electrode assembly method.

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Fig. 2. Vermiculite (10%) tracking test result.

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Fig. 3. Vermiculite (15%) tracking test result.

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Fig. 4. Vermiculite (20%) tracking test result.

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Fig. 5. Optical microscope photograph vermiculite (a) 10%, (b) 15%, and (c) 20%.

Table 1. Flammability rating standard.

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Table 2. Vermiculite (10%) flame retardant test result.

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Table 3. Vermiculite (15%) flame retardant test result.

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Table 4. Vermiculite (20%) flame retardant test result.

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Table 5. Vermiculite EDS analysis.

JJJRCC_2019_v32n3_213_t0005.png 이미지

참고문헌

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