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Tearing of thin polyimide films

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Abstract

Films of BTDA-ODA polyimide up to 58μm thick were torn at constant cross-head speed in “trousers” tests. In common with previous results on polyolefins, the work of tearing was found to increase markedly with specimen thickness. A model for the increase, based on the volume of plastically deformed material adjacent to the crack plane, was found to be only qualitatively valid. The experimental slope of a plot of tearing energy (per unit area) against thickness was 70 MJ m−3. Optical and scanning electron micrographs of torn films are discussed in regard to the modes of failure.

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Authors and Affiliations

  1. Polymeric Materials Branch, NASA Langley Research Center, 23665-5225, Hampton, Virginia, USA

    J. A. Hinkley & C. A. Hoogstraten

Authors
  1. J. A. Hinkley
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  2. C. A. Hoogstraten
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Hinkley, J.A., Hoogstraten, C.A. Tearing of thin polyimide films. J Mater Sci 22, 4422–4425 (1987). https://doi.org/10.1007/BF01132041

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  • DOI: https://doi.org/10.1007/BF01132041

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