Expansion graphite sheet of high thermal resistance, and exhaust gasket of high thermal resistance
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United States of America Patent
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Dec 12, 2006
Grant Date -
Aug 25, 2005
app pub date -
Jan 18, 2005
filing date -
Jan 15, 2004
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Abstract
An expansion graphite sheet of high thermal resistance includes an expansion graphite as a main component, and inorganic thermal resistance particles made of at least one selected from the group consisting of aluminum boride (AlB.sub.2 and/or AlB.sub.12), silicon boride (SiB.sub.6), zinc boric acid (2ZnO.3B.sub.2O.sub.3.3.5H.sub.2O) and phosphorous boride (PB). An exhaust gasket made of the expansion graphite sheet, in addition to the expansion graphite sheet, can exhibit high thermal (oxidization) resistance under a high temperature of 600 700.degree. C.
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