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Effect of filler on the viscosity and viscoelasticity of melts of low-density polyethylene. Communication 2

  • Viscous Liquids
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Polymer Mechanics Aims and scope

Conclusions

1. A filler causes a change in the viscoelastic functions of melts, which in general cannot be described in linearly transformable coordinates.

2. With rising filler concentration, the maximum of the frequency of the relaxation spectrum N(s) increases, but the frequency corresponding to the maximum decreases.

3. The dynamic viscosity and rigidity of matrices and composites as functions of frequency are satisfactorily described by a three-parameter relationship. The relationship derived contains parameters of the degree of filling. Using the dimensionless viscosity η'/ηo and deformation frequency εϑ'1 it was possible to obtain a relationship which is invariant with respect to the filler in a limited range of change in ε and which can be used for approximate calculations.

4. The initial shear modulus of a composite with a filler concentration corresponding to formation of a secondary network can be lower than the shear modulus of the matrix.

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Authors
  1. L. A. Faitel'son
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  2. A. I. Alekseenko
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Additional information

For communication 1 see [13].

Institute of Polymer Mechanics, Academy of Sciences of the Latvian SSR, Riga. Translated from Mekhanika Polimerov, No. 1, pp. 122–126, January–February, 1977.

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Faitel'son, L.A., Alekseenko, A.I. Effect of filler on the viscosity and viscoelasticity of melts of low-density polyethylene. Communication 2. Polymer Mechanics 13, 118–122 (1977). https://doi.org/10.1007/BF00857289

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  • DOI: https://doi.org/10.1007/BF00857289

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