Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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The Study of Characteristics on EPDM, NBR, FKM, VMQ and FVMQ for Sealing Applications to Lithium Ion Battery

리튬 이온 전지 씰링에의 응용을 위한 EPDM, NBR, FKM, VMQ 및 FVMQ 특성연구

  • Seo, Kwan-Ho (Department of Polymer Science, Kyungpook National University) ;
  • Cho, Kwang-Soo (Department of Polymer Science, Kyungpook National University) ;
  • Yun, In-Sub (Department of Polymer Science, Kyungpook National University) ;
  • Choi, Woo-Hyuk (Research & Development Institute, Pyung-hwa Oil seal Industry co., LTD.) ;
  • Hur, Byung-Ki (Research & Development Institute, Pyung-hwa Oil seal Industry co., LTD.) ;
  • Kang, Dong-Gug (Research & Development Institute, Pyung-hwa Oil seal Industry co., LTD.)
  • 서관호 (경북대학교 고분자공학과) ;
  • 조광수 (경북대학교 고분자공학과) ;
  • 윤인섭 (경북대학교 고분자공학과) ;
  • 최우혁 (평화오일씰공업(주) 기술개발본부) ;
  • 허병기 (평화오일씰공업(주) 기술개발본부) ;
  • 강동국 (평화오일씰공업(주) 기술개발본부)
  • Received : 2010.04.12
  • Accepted : 2010.07.14
  • Published : 2010.09.30
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Abstract

The materials of the lithium ion battery gasket require chemical resistance to the electrolyte, electrical insulating, compression set, anti-contamination and heat resistance. To estimate suitability for rubber which has better performance to compression set than PFA, each compound were made with various rubbers, such as EPDM, NBR, FKM, FVMQ, VMQ and we checked the characteristics of each compound. Samples from each compound was deposited in Propylene Carbonate and tested for changing of Hardness and Volume during 1,000 hr with $80^{\circ}C$. EPDM and VMQ showed good performance to chemical resistance to the electrolyte, and also we could get the values over $10^{10}{\Omega}cm$ on volume resistance basis in electrical insulating. EPDM and VMQ were judged as the most suitable material.

리튬 이온 전지의 가스켓 재료로 사용되기 위해서는 내전해액성, 전기절연성, 낮은 압축 영구 줄음률, 비오염성, 내열성이 요구된다. Perfluoroalkoxy (PFA)보다 압축 영구 줄음률이 우수한 고무의 적합성을 평가하기 위하여 Ethylene Propylene Diene Monomer (EPDM), Nitrile Butadiene(NBR), Fluoro Elastomers(FKM), Methyl-Vinyl Silicone Rubber (VMQ), Fluorosilicone(FVMQ)을 이용하여 최적상태의 compound를 제작하고 특성을 살펴보았다. 시험편을 $80^{\circ}C$의 propylene carbonate액에 침적하여 경도 및 체적변화를 1,000시간까지 시간별로 측정하였다. EPDM과 VMQ가 내전해액성이 우수하였으며, 전기절연성에서도 체적저항 기준 $10^{10}{\Omega}cm$이상의 결과를 얻을 수 있었다. 따라서, EPDM과 VMQ가 적절한 것으로 판단되었다.

Keywords

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