Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Carbon Black on Mechanical and Damping Properties of EPDM/Carbon Black System

EPDM/Carbon Black계에서 Carbon Black에 따른 기계적 성질 및 방진 특성

  • No, Tae-Kyeong (Department of Polymer Science, Kyungpook National University) ;
  • Kang, Dong-Guk (Research & Development Institute, Pyung-hwa Oil seal Industry co., LTD.) ;
  • Seo, Jae-Sik (Polymeric Materials Research Team, Hyundai Motor Company, Hyundai Kia Motors Namyang Institute) ;
  • Yang, Kyung-Mo (Polymeric Materials Research Team, Hyundai Motor Company, Hyundai Kia Motors Namyang Institute) ;
  • Seo, Kwan-Ho (Department of Polymer Science, Kyungpook National University)
  • 노태경 (경북대학교 고분자공학과) ;
  • 강동국 (평화오일씰공업(주) 기술개발본부) ;
  • 서재식 (현대자동차(주) 재료연구팀) ;
  • 양경모 (현대자동차(주) 재료연구팀) ;
  • 서관호 (경북대학교 고분자공학과)
  • Received : 2012.06.19
  • Accepted : 2012.07.31
  • Published : 2012.09.30
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Abstract

This study measured the mechanical and damping properties of EPDM compounds including fillers. Semi-reinforcing furnace black (SRF), high abrasion furnace black (HAF) and acetylene black were used as fillers. Dicumyl peroxide (DCP) were used as curing agents. The measurements were conducted using a moving die rheometer (MDR), durometer, universal testing machine (UTM), compression set and dynamic mechanical analysis (DMA). The tensile strength and elongation at break increased with increasing SRF contents in EPDM compounds. However, they decreased with increasing the amount of acetylene black. In the inspecting temperature range, EPDM compound filled acetylene black had stable storage modulus. Furthermore, the tan ${\delta}$ of the EPDM compounds obtained was enhanced by compounding with acetylene black.

본 연구에서는 EPDM 컴파운드에 여러 종류의 충전제를 사용하여 물리적, 기계적 특성을 관찰하였다. 충전제로는 Semi-reinforcing furnace black(SRF), high abrasion furnace black(HAF) 그리고 acetylene black을 사용하였다. 가교제로는 dicumyl peroxide (DCP)를 사용하였다. 레오미터, 경도계, 만능 재료 시험기, 영구 압축 줄음율 그리고 동적 점탄성 분석을 통하여 재료의 성질을 관찰하였다. EPDM 컴파운드에 충전제로 SRF를 사용하였을 때함량의 증가에 따라 인장강도와 파단 연신율은 증가하였으나, acetylene black을 사용하였을 때 함량의 증가에 따라 인장강도와 파단 연신율은 감소하였다. Acetylene black을 사용하였을 때 넓은 온도 범위에서 저장탄성률의 변화율이 적었다. 또한 EPDM 컴파운드의 tan ${\delta}$는 acetylene black을 사용하였을 때 우수한 결과를 보였다.

Keywords

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