Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effect of Waste Ground Tire Rubber on Flame Retardancy and Foaming Properties of the NBR foams

폐타이어 고무분말(GTR)이 니트릴고무(NBR) 발포체의 난연 및 발포 특성에 미치는 영향

  • Moon, Sung-Chul (Division of Chemical and Polymer Sci. & Eng., Chosun Univ.) ;
  • Lee, Jae-Chul (Division of Chemical and Polymer Sci. & Eng., Chosun Univ.) ;
  • Choi, Jae-Kon (Division of Chemical and Polymer Sci. & Eng., Chosun Univ.) ;
  • Jo, Byung-Wook (Division of Chemical and Polymer Sci. & Eng., Chosun Univ.)
  • 문성철 (조선대학교 공과대학 화학.고분자공학부) ;
  • 이재철 (조선대학교 공과대학 화학.고분자공학부) ;
  • 최재곤 (조선대학교 공과대학 화학.고분자공학부) ;
  • 조병욱 (조선대학교 공과대학 화학.고분자공학부)
  • Published : 2003.09.30
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Abstract

The flame retardancy and foaming properties of NBR foams containing waste ground tire rubber (GTR) were studied. When the composition ratios of NBR/GTR were ranged in $100/0{\sim}80/20$ (w/w) and rubbers/flame retardants were in the range of $1/1.95{\sim}3.70 wt%$, the considerably optimized foam for flame retardancy was obtained with high limiting oxygen indices (LOI, $29.4{\sim}40.0$), low heat release rate(HRR), closed/semi-closed cell of uniformity, and reasonable expandability ($215{\sim}300 %$). The LOI was increased and the heat release rate was decreased with increasing the amount of GTR content.

본 연구에서는 폐타이어 고무분말 (GTR)과 일부 난연제를 포함한 acrylonitrile-butadiene rubber (NBR) 발포체를 제조하고, 난연 및 발포특성에 GTR이 미치는 영향을 조사하였다. 그결과 고무/난연제의 조성비가 $1/1.95{\sim}3.70 wt%$이며, GTR의 함량이 20 wt% 범위 이내에서 원활한 핵의 생성 및 cell의 성장으로 인해 높은 발포율 ($215{\sim}300 %$)과 균일한 닫힌/반 닫힌 셀(closed/semi-closed cell)을 보여주었으며, 높은 LOI ($29.4{\sim}40.0$)와 낮은 (A)-HRR을 보임을 확인하였다. 또한 GTR의 함량이 증가함에 따라 자체적인 난연 특성으로 인해 LOI가 증가하고, HRR이 감소하는 반면에 (A)-COY는 증가함을 확인하였다.

Keywords

References

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