Measurement of Thermal Shrinkage/Expansion Force of Filled Rubber

충전된 고무재료의 열변화에 따른 수축력/팽창력 측정

  • Park, Sang-Min (Center for Functional Nano Fine Chemicals (BK 21) School of Applied Chemical Engineering, Chonnam National University) ;
  • Hong, Chang-Kook (Center for Functional Nano Fine Chemicals (BK 21) School of Applied Chemical Engineering, Chonnam National University) ;
  • Cho, Dong-Lyun (Center for Functional Nano Fine Chemicals (BK 21) School of Applied Chemical Engineering, Chonnam National University) ;
  • Kaang, Shin-Young (Center for Functional Nano Fine Chemicals (BK 21) School of Applied Chemical Engineering, Chonnam National University)
  • 박상민 (전남대학교 응용화학공학부) ;
  • 홍창국 (전남대학교 응용화학공학부) ;
  • 조동련 (전남대학교 응용화학공학부) ;
  • 강신영 (전남대학교 응용화학공학부)
  • Published : 2007.12.31

Abstract

In this study, the thermal shrinkage and expansion stresses of filled NR and SBR vulcanizates were measured to investigate the dimensional stability at an elevated temperature. When a rubber sample was held at constant pre-strain, a thermal stress developed upon heating due to the entropic consideration. The peak shrinkage stress of carbon black or silica filled NR decreased with increasing filler content. In SBR compounds, however, the peak shrinkage stress of SBR with 30 phr filler content was higher than that of unfilled compounds. The expansion stress of carbon black filled NR was changed little, but that of filled SBR increased with increasing the filler content. The peak expansion stress of silica filled NR and SBR vulcanizates increased with increasing silica content.

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