Processes occurring in organosilicon compositions undergoing vulcanization by atmospheric moisture

Vulcanization of “one-pack” organosilicon compositions occurring under the influence of atmospheric moisture is examined from the point of view of the theory of three dimensional polycondensation. The range of conditions for gel formation found experimentally are compared with the range calculated i...

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Bibliographic Details
Published in:Polymer science USSR 1977, Vol.19 (1), p.42-49
Main Authors: Severnyi, V.V., Minsker, Ye.I., Ovechkina, N.A.
Format: Article
Language:English
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Summary:Vulcanization of “one-pack” organosilicon compositions occurring under the influence of atmospheric moisture is examined from the point of view of the theory of three dimensional polycondensation. The range of conditions for gel formation found experimentally are compared with the range calculated in accordance with the views of Carothers and Flory, worked out for systems containing non-equivalent concentrations of functional groups. Chemical models of the compounds formed in the system at the stage preceding vulcanization are proposed, as well as an outline of the vulcanization process that explains specific features of the behaviour of these compositions brought out in this work.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(77)90146-0