Structure for composite materials of positive temperature coefficient thermistor devices and method of making the same
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United States of America Patent
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Jul 8, 2003
Grant Date -
Sep 12, 2002
app pub date -
Jan 24, 2002
filing date -
Mar 7, 2001
priority date (Note) -
Expired
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Abstract
The present invention discloses a structure for composite materials of a positive temperature coefficient thermistor and a method of making the same. A carbon black is electroplated onto a surface of the metal electrodes of a metal laminated material to form a continuous porous structure having carbon black. Then a thermal laminating process is used to laminate the metal laminated material and a conductive crystallized polymeric composite material plaque filled with carbon black, to form a fine point between surfaces of the metal electrodes of metal laminated material and the conductive crystallized polymeric composite material plaque filled with carbon black. In the meantime, it can also lower down interfacial resistance by allowing carbon black particles of conductive crystallized polymeric composite material filled with carbon black to fully contact with the surface electroplated layer of the metal electrodes.
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