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Thermal properties of two low viscosity silicone oils as functions of temperature and pressure
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
1982 (English)In: Journal of Applied Physics, ISSN 0021-8979, Vol. 53, no 12, 8751-8755 p.Article in journal (Refereed) Published
Abstract [en]

The thermal conductivity and the specific heat capacity per unit volume have been measured for two low viscosity grades of Dow Corning 200 fluid (polydimethyl siloxane) in the range 110 to 350 K and under pressures up to 2.0 GPa (20 kbar). Both the quantities studied are found to increase with increasing pressure in the liquid phase. From the measured data the phase diagrams are obtained. The 5 mm2/s (5 cSt) grade fluid does not crystallize, but undergoes a glass transition at 1.0 GPa at room temperature. The 1 mm2/s (1 cSt) grade has a more complicated phase diagram with a partly crystalline phase at low temperatures and pressures and two glass transitions at high temperatures and pressures.

Place, publisher, year, edition, pages
American Institute of Physics , 1982. Vol. 53, no 12, 8751-8755 p.
Keyword [en]
High pressure, silicone oil, poly(dimethyl siloxane), PDMS, DC 200, viscosity, thermal conductivity, thermal diffusivity, phase diagram, glass transition, crystallization
National Category
Condensed Matter Physics
Research subject
URN: urn:nbn:se:umu:diva-23162DOI: 10.1063/1.330475OAI: diva2:220668
Available from: 2009-06-02 Created: 2009-06-02 Last updated: 2010-02-03

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