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  • 1
    Electronic Resource
    Electronic Resource
    Anisotropic conduction of heat in a flowing polymeric material (1990)
    Springer
    Rheologica acta 29 (1990), S. 580-587 
    Details
    ISSN: 1435-1528
    Keywords: Anisotropy ; thermalconductivity ; polymerprocessing ; orientation ; viscousheating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract In this paper a theory is presented which relates the thermal conductivity tensor of an amorphous polymeric material to the history of deformation of the material. The basis of the theory is formed by the network theory for polymeric materials. It will be shown that the results obtained here are in good agreement with experimental results on rubber. The effect of anisotropic heat conduction on the flow of a polymeric material will be demonstrated by the simple example of viscous heating in shear flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01329304
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Anisotropic conduction of heat caused by molecular orientation in a flowing polymeric liquid (1990)
    Springer
    Rheologica acta 29 (1990), S. 175-181 
    Details
    ISSN: 1435-1528
    Keywords: Anisotropy ; thermalconductivity ; orientation ; Graetz-Nusselt problem ; polymer processing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Abstract To demonstrate the influence of molecular orientation on the heat conduction in a flowing polymeric liquid, we consider a variant of the Graetz-Nusselt problem. A polymeric liquid is flowing between two flat, parallel plates with a sudden change in the wall temperature. The temperature distribution in the entrance region is calculated numerically taking viscous dissipation into account. It is assumed that the material properties are independent of the temperature. It is shown that the change in the temperature distribution in the fluid caused by molecular orientation is large enough to affect polymer processing significantly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01331353
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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