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  • Thermal conductivity  (1)
  • network theory  (1)
  • 1
    Digitale Medien
    Digitale Medien
    A network theory for the thermal conductivity of an amorphous polymeric material (1989)
    Springer
    Rheologica acta 28 (1989), S. 257-266 
    Details
    ISSN: 1435-1528
    Schlagwort(e): Thermalconductivity ; anisotropy ; network theory ; polymer ; rubber
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Abstract A model to relate the thermal conductivity tensor to the deformation of an amorphous polymeric material above the glass transition temperature is presented. The basis of the model is formed by the transient network theory for polymer melts. With this theory it is possible to calculate the average orientation of the macromolecular segments as a function of the history of the deformation. Combined with an expression which relates the thermal conductivity to the orientation of the molecules, this provides us with the information needed to calculate the heat conduction tensor. Despite the fact that the simplest possible network model is chosen, there is good agreement with the sparse, experimental results.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01329335
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    The non-isothermal elastic dumbbell: A model for the thermal conductivity of a polymer solution (1990)
    Springer
    Rheologica acta 29 (1990), S. 416-422 
    Details
    ISSN: 1435-1528
    Schlagwort(e): Thermal conductivity ; anisotropy ; elastic dumbbell ; polymer
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Abstract In a flowing polymeric liquid, molecular orientation will give rise to anisotropic conduction of heat. In this paper, a theory is presented relating the thermal conductivity tensor to the deformation history of the fluid. The basis of this theory is formed by the Hookean dumbbell. It is shown that the anisotropy of the thermal conductivity is proportional to the polymer contribution to the extra-stress tensor. This stress-thermal law makes it relatively simple to incorporate anisotropic heat conduction into the numerical simulation of a flowing polymeric liquid.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01376792
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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