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A thermal analysis study of the interactions of curatives in the accelerated sulphur vulcanization system

✍ Scribed by C.M. Kok

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
251 KB
Volume
21
Category
Article
ISSN
0014-3057

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✦ Synopsis

Possible interactions between curatives of a sulphenamide accelerated sulphur vulcanizing system have been studied by differential scanning calorimetry. Comparison of the thermograms reveals that in most cases reactions occurred between combinations of two or three of these curatives. However, the most favourable reaction appears to be complex formation between the compounding ingredients zinc oxide, stearic acid and the sulphenamide accelerator. This finding supports the often quoted initial step in the accelerated sulphur vulcanization of natural rubber.

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✍ F. W. H. Kruger; W. J. McGill 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 820 KB

## Abstract Several aspects on the mechanism of vulcanization in the synthetic __cis__‐1,4‐polyisoprene (IR)‐sulfur‐tetramethylthiuram disulphide (TMTD)–ZnO system were harmonized. The differential scanning calorimetry (DSC) thermograms showed that the vulcanization processes became better resolved