Method for making high strength and high modulus carbon fibers

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United States of America Patent

PATENT NO 11773514
APP PUB NO 20200378035A1
SERIAL NO

16984273

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Abstract

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In a method of making a carbon fiber, PAN (poly(acrylonitrile-co methacrylic acid)) is dissolved into a solvent to form a PAN solution. The PAN solution is extruded through a spinneret, thereby generating at least one precursor fiber. The precursor fiber is passed through a cold gelation medium, thereby causing the precursor fiber to gel. The precursor fiber is drawn to a predetermined draw ratio. The precursor fiber is continuously stabilized to form a stabilized fiber. The stabilized fiber is continuously carbonized thereby generating the carbon fiber. The carbon fiber is wound onto a spool. A carbon fiber has a fiber tensile strength in a range of 5.5 GPa to 5.83 GPa. The carbon fiber has a fiber tensile modulus in a range of 350 GPa to 375 GPa. The carbon fiber also has an effective diameter in a range of 5.1 μm to 5.2 μm.

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Patent Owner(s)

Patent OwnerAddress
GEORGIA TECH RESEARCH CORPORATION926 DALNEY STREET NW ATLANTA GA 30318

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chae, Han Gi Atlanta, US 6 34
Gulgunje, Prabhakar V Atlanta, US 3 0
Gupta, Kishor K Atlanta, US 3 0
Kamath, Manjeshwar G Atlanta, US 4 0
Kumar, Satish Atlanta, US 113 1255
Liu, Yaodong Atlanta, US 12 98
Newcomb, Bradley A Atlanta, US 29 78

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