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Effect of bimodality on tear properties of silicone networks

โœ Scribed by Gul Bali Shah; Ray Wlliam Winter

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
391 KB
Volume
197
Category
Article
ISSN
1022-1352

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โœฆ Synopsis

Abstract

The effect of blending a short and a long chain prepolymer, i.e. the effect of biomodality, and that of concentration of the crosslinker on mechanical properties has been investigated. The content of short chain prepolymer was varied from 0 to 80 wt.โ€%. Different concentrations of crosslinker, 3.9, 9.1 and 12.3 wt.โ€%, were used for the bimodal mixtures. It was found that the enhancement of tear properties was dependent upon both the bimodality and the amount of crosslinker used for curing. It has been shown that the enhancement cannot be explained in terms of the existing theoretical equations for tear properties.

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