Role of ozone in dynamic cut growth of rubber
- 1 June 1965
- journal article
- research article
- Published by Wiley in Journal of Applied Polymer Science
- Vol. 9 (6) , 2031-2045
- https://doi.org/10.1002/app.1965.070090604
Abstract
The effect of ozone on the growth of cuts in rubber strips subjected to repeated tensile deformations has been investigated. At tearing energies below a critical value ozone accounts for all the cut growth, and in this region the rate of growth also occurs due to mechanico‐oxidative rupture, the rate of this type of growth increasing rapidly with increasing tearing energy so that the effects of ozone are normally slight. For vulcanizates of natural rubber and SBR unprotected by antiozonant, the characteristics of dynamic ozone cut growth can be deduced from static measurements. If a natural rubber test piece is not allowed to relax to zero strain on each cycle, the effects of ozone are important over a wider range of tearing energy.Keywords
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