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Shape change during the 19 °C-Phase transformation of PTFE

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Physik der Duroplaste und anderer Polymerer

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 64))

Abstract

The shape change associated with the phase transformation of PTFE at room temperature was measured under uniaxial compressive load in a specially designed dilatometer. The transformation is insensitive to cooling rate. Shape changes due to lattice variant shear were not found if the transformation occurs under an external shear stress. Anisotropic shape changes are due to molecular alignment and independent of the stress acting during transformation. The experiments indicate that the PTFE transforms by a special type of diffusionless transformation that takes place by a shear-free lattice variant volume change and lattice invariant elastic strain.

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Author information

Authors and Affiliations

  1. Institut für Werkstoffe, Ruhr-Universität Bochum, Bochum, Germany

    E. Hornbogen

Authors
  1. E. Hornbogen
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Editor information

E. W. Fischer F. Horst Müller R. Bonart

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© 1978 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Hornbogen, E. (1978). Shape change during the 19 °C-Phase transformation of PTFE. In: Fischer, E.W., Müller, F.H., Bonart, R. (eds) Physik der Duroplaste und anderer Polymerer. Progress in Colloid & Polymer Science, vol 64. Steinkopff. https://doi.org/10.1007/BFb0117512

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  • DOI: https://doi.org/10.1007/BFb0117512

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  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-1806-3

  • Online ISBN: 978-3-7985-1807-0

  • eBook Packages: Springer Book Archive

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