The effect of benzoic and stearic acids on 2-bisbenzothiazole-2,2ะ-disulfide (MBTS)-and tetramethylthiuram disulfide (TMTD)-accelerated sulfur vulcanization of polyisoprene compounds, containing ZnO, was studied at 150ยฐC. In the presence of ZnO, the acids are rapidly converted to their zinc salts th
The effect of carbon black on tetramethylthiuram disulfide accelerator sulfur vulcanization of polyisoprene
โ Scribed by W. J. McGill; S. R. Shelver
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 608 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0021-8995
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Polyisoprene was vulcanized by 2-bisbenzothiazole-2,2ะ-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
A detailed study of the vulcanization of polybutadiene with various combinations of sulphur, tetramethylthiuram disulphide, ZnO, stearic acid, and zinc dimethyldithiocarbamate is reported. Vulcanization was conducted by heating samples at 2.5"C / min in a differential scanning calorimeter. The react
Polyisoprene was vulcanized with binary accelerator systems comprising mixtures of the zinc salts of tetramethylthiuram disulfide (TMTD) and 2-mercaptobenzothiale (MBT). Samples were heated in a DSC at a programmed rate, the reaction was stopped at points along the thermal curve, and the system was
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The sulfur vulcanization of NR by a MBT-TMTD mixed accelerator system both in the presence and absence of ZnO and stearic acid with or without DCP has been studied. The rate of decomposition of DCP in the presence of both MBT and T M T D is quite similar to that in the MBT system alone. The reductio