Thermally-conductive, electrically non-conductive heat transfer material and articles made thereof
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United States of America Patent
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Jul 13, 2004
Grant Date -
Feb 20, 2003
app pub date -
Jun 7, 2002
filing date -
Jul 15, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A heat transfer material comprised of a polymeric material and a nitride or oxide is provided and is thermally conductive, but electrically non-conductive. The polymeric material may be silicone rubber, and the nitride or oxide may be aluminum nitride, boron nitride, silicon nitride, aluminum oxide or beryllium oxide. The material is made flexible by adding plasticizer and remains flexible after an extended period of use. A dielectric jacket for an electrical heating cable is thermally conductive and remains flexible so that it can be reused. The heat transfer material can be used on heating devices such as steam tubes and panels, where the heat transfer material does not bond to or adhere to the heated surface, which allows the heating device to be reused.
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