High modulus graphite fiber and manufacturing method thereof
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United States of America Patent
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Apr 22, 2014
Grant Date -
Feb 6, 2014
app pub date -
Jul 31, 2012
filing date -
Jul 31, 2012
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Abstract
A high modulus graphite fiber with a tensile modulus of 270˜650 GPa and a plurality of crystal structures with a thickness (Lc) of 20˜70 angstroms is disclosed. Carbon fiber is used as a raw material, and a microwave focusing method is used to perform an ultra quick high temperature graphitization process to increase the temperature of the carbon fiber at a heating speed of 10˜100° C. per minute to a graphitization temperature of 1400˜3000° C., and then to perform a quick graphitization process for 0.5˜10 minutes to form the high modulus graphite fiber.
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