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A thermal analysis study of the effect of zinc oxide on the sulphur vulcanization of rubbers

✍ Scribed by C.M. Kok

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 145 KB
Volume: 22
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(86)90084-4

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✦ Synopsis

The effect of zinc oxide on the vulcanization enthalpy of various sulphur vulcanization systems has been studied. The enthalpy-zinc oxide plots reveal minima in the natural rubbe~sulphur unaccelerated system as well as in the synthetic polyisoprene-sulphur unaccelerated system, containing extracts of natural rubber impurities. However, this complex behaviour is not observed in accelerated sulphur vulcanizing systems for the two rubbers and is also absent from unaccelerated sulphur vulcanization of styrene-butadiene rubber. It is postulated that the non-rubber impurities play an important role in producing these minima in the enthalpy~inc oxide plots.

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