Exactly alternating silarylene–siloxane polymers. V. Evaluation of the mechanical properties of crosslinked elastomers

Authors

  • Mary E. Livingston,

    1. Chemical Engineering Department, Materials Research Laboratory, University of Massachusetts, Amherst, Massachusetts 01003
    Current affiliation:
    1. Kendall Corporation, Division of Pipeline Coatings, 17 Hartwell Avenue, Lexington, MA 02173
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  • Peter R. Dvornic,

    1. Chemical Engineering Department, Materials Research Laboratory, University of Massachusetts, Amherst, Massachusetts 01003
    Current affiliation:
    1. Department of Macromolecular Chemistry, Institut of Chemistry, Technology and Metalurgy, Njegoseva 12, 11000 Beograd, Yugoslavia
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  • Robert W. Lenz

    1. Chemical Engineering Department, Materials Research Laboratory, University of Massachusetts, Amherst, Massachusetts 01003
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Abstract

The search for technologically useful elastomers with good thermal stability at elevated temperatures combined with low temperature flexibility has led us and others to the preparation of a series of linear alternating silarylene–siloxane polymers. Because of the very favorable thermal stabilities of these polymers, a detailed study was made of methods for their vulcanization and for the evaluation of their mechanical properties. The results of these investigations are described, including mechanical properties of the vulcanizates both before and after heat aging and before and after immersion in different solvents, as well as their characteristics after prolonged and repeated extension.

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