Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Binary Cure Systems of 1,6-Bis(N,N'-dibenzylthiocarbamoyldithio)-hexane and Benzothiazole Sulfenamides in Carbon Black-filled Natural Rubber Compounds

  • Choi, Sung-Seen (Advanced Materials Research Center, Chungnam National University) ;
  • Park, Byung-Ho (Kumho Research and Development Center) ;
  • Lee, Seung-Goo (Department of Textile Engineering, College of Engineering, Chungnam National University) ;
  • Kim, Beom-Tae (Research Center of Bioactive Materials, College of Natural Science, Chonbuk National University)
  • Published : 2002.02.20
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Abstract

Binary cure system is composed of different two cure accelerators, which can cause a synergy effect to delay the scorch time and to increase the cure rate. In this study, binary cure systems between 1,6-bis(N,N'-dibenzylthiocarbamoyldithio)-hexane (DBTH) and benzothiazole sulfenamides were investigated using carbon black-filled natural rubber compounds. N-Cyclohexyl-2-benzothiazole sulfenamide (CBS), N-tert-butyl-2-benzothiazole sulfenamide (TBBS), and 2-(morpholinothio) benzothiazole (MOR) were employed as benzothiazole sulfenamides. The binary cure systems show scorch safty at high temperature. The binary cure systems have faster cure rate and better reversion resistance than the single cure system of the benzothiazole sulfenamides. DBTH is found to be more effective to decrease the viscosity of a compound than the benzothiazole sulfenamides. Physical properties of the vulcanizates with the binary cure system are better than those of the vulcanizates with the single one.

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References

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