Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Recovery Behaviors of Natural Rubber Composites Thermally Aged in Altering Medium Systems of Air and Water

공기와 물의 교매질 시스템에서 열노화된 천연고무 복합체의 회복 거동

  • Choi, Sung-Seen (Department of Chemistry, Sejong Polymer Research Center, Sejong University) ;
  • Kim, Ok-Bae (Department of Chemistry, Sejong Polymer Research Center, Sejong University)
  • Received : 2013.04.18
  • Accepted : 2013.05.10
  • Published : 2013.09.30
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Abstract

Unfilled, carbon black-filled, and silica-filled natural rubber (NR) composites were aged with a circular deformation at $60-90^{\circ}C$ and the recovery behaviors were investigated. The samples were aged under the altering aging medium systems of air and distilled water every day for 10 days. The order of the recoveries according to the filler systems was unfilled > silica > carbon black. The recoveries of the samples aged in the air to water altering system were greater than those of the samples aged in the water to air altering system. The initial aging medium dominantly influenced the deformation level.

비충전, 카본블랙 충전, 그리고 실리카 충전 천연고무(NR) 복합체를 원형 변형 상태로 $60-90^{\circ}C$에서 노화시켜 회복 거동을 조사하였다. 시험편은 공기와 물을 매일 교대로 교체하는 교매질 시스템 하에서 노화시켰다. 충전시스템에 따른 회복률의 순서는 비보강 > 실리카 보강 > 카본블랙 보강 순이었다. 공기에서 물로 교체하는 교매질 시스템에서 노화된 시험편의 회복률이 물에서 공기로 교체하는 교매질 시스템에서 노화된 시험편의 회복률보다 더 컸다. 최초 노화 매질은 변형 정도에 지배적으로 영향을 끼쳤다.

Keywords

References

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