Preparation of elastic graphite materials
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United States of America Patent
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May 21, 1991
Grant Date -
N/A
app pub date -
Sep 15, 1989
filing date -
Sep 22, 1988
priority date (Note) -
Expired
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Abstract
A method for producing an elastic graphite material having a packing density of 1.0 g/cm.sup.3 or lower and a recovery of 50% or higher at a compressibility of 10 to 90% is provided, which comprises: heating a carbonaceous material rapidly while bringing the carbonaceous material into contact with nitric acid for expansion and foaming, and graphitizing the thus expanded and foamed carbonaceous material.
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