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Viscoelastic dissipation and the tear energy of urethane-cross-linked polybutadiene elastomers

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Abstract

A series of urethane-cross-linked polybutadiene elastomers of varying cross-linking levels have been investigated to determine the relationship between viscoelastic dissipation and tear (or fracture) resistance. Several points of correspondence were identified between these two properties. The first was an inverse proportionality in the terminal region between crosslink density and torsional creep behaviour as well as tear energy data, with the looser net-works being more dissipative and displaying the greatest resistance to tear. Secondly, master curves of both creep compliance and tear energy exhibited a unique intermediate plateau. This plateau measured approximately 13 decades in time in each case. The temperature dependences were determined to be the same for the tear energy and creep compliance. Finally, in the terminal or long time region, it was found that the dynamic loss modulusG″ could be linearly correlated with the tear energy.

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Author notes

  1. G. -F. Gu

    Present address: Tung Chi University, Shanghai, People's Republic of China

  2. R. G. Stacew

    Present address: Air Force Rocket Propulsion Laboratory, Edwards Air Force Base, California, USA

  3. L. -J. Su & E. D. Von Meerwall

    Present address: General Tire and Rubber Company, Research Division, 44305, Akron, Ohio, USA

Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Pittsburgh, 15261, Pittsburgh, Pennsylvania, USA

    D. J. Plazek & G. -F. Gu

  2. Institute of Polymer Science, The University of Akron, 44325, Akron, Ohio, USA

    R. G. Stacew, L. -J. Su, E. D. Von Meerwall & F. N. Kelley

Authors
  1. D. J. Plazek
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  2. G. -F. Gu
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  3. R. G. Stacew
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  4. L. -J. Su
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  5. E. D. Von Meerwall
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  6. F. N. Kelley
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Plazek, D.J., Gu, G.F., Stacew, R.G. et al. Viscoelastic dissipation and the tear energy of urethane-cross-linked polybutadiene elastomers. J Mater Sci 23, 1289–1300 (1988). https://doi.org/10.1007/BF01154592

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  • DOI: https://doi.org/10.1007/BF01154592

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