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The Evaluation of bis(4-Methylphenylsulfonyldithiocarbimato)zincate (II) (ZNIBU) Activity in the Vulcanization of NBR Compounds and its Effect on their Mechanical Properties

Iara de Oliveira1, Leandro Cunha1, Leila Visconte1, Marcelo Oliveira2 and Mayura Rubinger2
1 Instituto de Macromoleculas Professora Eloisa Mano/Universidade Federal de Rio de Janeiro, P.O. Box 68525, Rio de Janeiro, RJ, 21941-598 Brazil 2 Departamento de Quimica, Universidade Federal de Vicosa, Vicosa MG, 36570 000 Brazil
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The effect of accelerator type on the vulcanization process and mechanical properties of nitrile rubber (NBR) compounds was investigated. Three commercial accelerators were selected, N-N-t-butyl-2-benzothiazole sulfenamide (TBBS), tetramethylthiuram disulfide (TMTD) and bis(dimethyldithiocarbamato)zinc (II) (ZDMC) and compared with the compound bis(4 methylphenylsulfonyldithiocarbimato)zincate (II) (ZNIBU). Surprisingly, it was found that the optimum vulcanization time for ZNIBU showed better results than for TBBS.

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