Article
  • A Study on the Vibration Damping of Natural Rubber Vulcanizates Filled with Various Carbon Blacks
  • Lee BC, Kim WY, Lee DS
  • 카본블랙 혼합에 따른 천연고무의 방진특성에 관한 연구
  • 이범철, 김완영, 이대수
Abstract
The effects of carbon black properties on the vibration damping of vulcanized natural rubber (NR) were studied empirically. Especially, changes of static modulus, hardness, dynamic ratio, loss tangent, and dynamic viscosity depending on the type and content of carbon black in the NR vulcanizate were investigated. It was observed that changes of static modulus closely followed trends predicted by Guth-Gold equation for the carbon black filled NR vulcanizate in case of carbon black of small particle. Rate of hardness increase depending on carbon black content increased on the increase of iodine adsorption value of carbon black. Two parameters, dynamic ratio and loss tangent, important for vibration damping were found to increase with increasing ratio of iodine adsorption value and dibutyl phthalate absorption value of carbon black. Optimized conditions for vibration damping with carbon black filled NR vulcanizate were suggested in terms of specific surface area of carbon black.

카본블랙을 첨가한 가황 천연고무의 방진특성에 미치는 카본블랙 특성의 영향을 실험적으로 고찰하였다. 특히 카본블랙 종류 및 첨가량에 따른 가황 천연고무의 정적탄성율, 경도, 동비율, loss tangent, 동적점성율의 변화를 해석하고 방진성능과의 관계를 검토하였다. 가황 천연고무의 정적탄성율 변화는 입자경이 작은 카본블랙을 첨가한 경우 Guth-Gold식으로 예측되는 바와 잘 일치함이 관찰되었다. 한편 카본블랙의 요오드흡착가가 클수록 가황 천연고무의 경도 중가율은 높았다. 방진특성의 중요한 인자인 동비율과 loss tangent의 경우 요오드흡착가와 디부틸프탈레이트 흡착가 비가 클수록 높아졌다. 방진특성의 최적을 위한 조건을 카본블랙의 비표면적으로 나타낼 수 있었다.

Keywords: nataral rubber; vibration damping; carbon black

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1996; 20(6): 971-978

    Published online Nov 25, 1996