Effect of water and hydrogen sulfide in zinc dimethyldithiocarbamate accelerated sulfur vulcanization
β Scribed by M. Shumane; M. H. S. Gradwell; W. J. McGill
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 279 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0021-8995
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Poly(isoprene-co-isobutylene) (IIR or butyl) and chlorinated poly(isopreneco-isobutylene) (CIIR or chlorobutyl) compounds containing combinations of zinc dimethyldithiocarbamate [Zn 2 (dmtc) 4 ], tetramethylthiuram disulfide (TMTD), sulfur, and ZnO were vulcanized at 150Β°C, the reaction was stopped
Stearic and benzoic acids were heated with 2-bisbenzothiazole-2,2Π-disulfide (MBTS)/sulfur/ZnO and tetramethylthiuram disulfide (TMTD)/sulfur/ZnO isothermally at 150Β°C and in a DSC at 2.5Β°C/min, in the absence of rubber. The acids readily reacted with ZnO, and at vulcanization temperatures, little o
Polyisoprene was vulcanized by 2-bisbenzothiazole-2,2Π-disulfide (MBTS)/ sulfur and tetramethylthiuram disulfide (TMTD)/sulfur in the absence and presence of benzoic and stearic acids. It was found that the crosslink density of MBTS vulcanizates is halved by the addition of carboxylic acids and this
## Abstract Absorption of hydrogen sulfide in aqueous suspensions of biologically produced sulfur particles was studied in a batch stirred cell reactor, and in a continuous setβup, consisting of a labβscale gas absorber column and a bioreactor. Presence of biosulfur particles was found to enhance t