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Mechanical relaxation in arimide PM fibres in the temperature range 20–900°K

  • Physicomechanical Properties And Applications Of Man-Made Fibres
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Fibre Chemistry Aims and scope

Conclusions

The temperature dependences of the tangent of the mechanical loss angle, tan δ, the dynamic shear modulus, G', and the velocity of shear waves, ct, of arimide PM fibre have been studied by the method of free twisting oscillations in the temperature range 20–900°K, at frequencies of 0.2–1 Hz.

Relaxation transitions are observed in the tan δ = f(T) dependence in the temperature regions of 115, 220, 400, and 644°K, with activation energies of 23, 59, 84, and 770 kJ/mole, respectively.

Values of the dynamic shear modulus of the investigated fibre have been obtained over a wide temperature range.

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Authors
  1. A. S. Badaev
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  2. A. B. Noskov
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  3. V. E. Sorokin
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  4. Z. G. Oprits
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Additional information

Translated from Khimicheskie Volokna, No. 4, pp. 41–42, July–August, 1984.

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Badaev, A.S., Noskov, A.B., Sorokin, V.E. et al. Mechanical relaxation in arimide PM fibres in the temperature range 20–900°K. Fibre Chem 16, 269–271 (1985). https://doi.org/10.1007/BF00574545

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  • DOI: https://doi.org/10.1007/BF00574545

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