Polymer heat pipe with carbon core
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United States of America Patent
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-
Nov 12, 2002
Grant Date -
May 30, 2002
app pub date -
Nov 29, 2000
filing date -
Dec 6, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A polymer heat pipe with a carbon core and a method of forming such a heat pipe is disclosed. The heat pipe includes a substantially pure carbon fiber core and an outer jacket of substantially pure polymer material. The heat pipe is formed by extruding a mixture of a base of polymer material and a plurality of carbon fibers through an extrusion die. The extrusion die is heated into a range of approximately 250-400.degree. F. to cause the carbon fiber to migrate to the center of the extrudate and the polymer to migrate outwardly. As a result, a jacket of polymer material is formed around a core of carbon fibers to form a highly thermally conductive heat pipe.
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