Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Thermal Resistance Network Model for Heat Conduction of Amorphous
  Polymers   Thermal conductivities (TCs) of the vast majority of amorphous polymers are
in a very narrow range, 0.1 $\sim$ 0.5 Wm$^{-1}$K$^{-1}$, although single
polymer chains possess TC of orders-of-magnitude higher. Entanglement of
polymer chains plays an important role in determining the TC of bulk polymers.
We propose a thermal resistance network (TRN) model for TC in amorphous
polymers taking into account the entanglement of molecular chains. Our model
explains well the physical origin of universally low TC observed in amorphous
polymers. The empirical formulae of pressure and temperature dependence of TC
can be successfully reproduced from our model not only in solid polymers but
also in polymer melts. We further quantitatively explain the anisotropic TC in
oriented polymers.

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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: cmp-lg
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The categories of this paper are: funct-an
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: cs
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math