Mesophase pitch for carbon fiber and method for producing mesophase pitch-based carbon fiber
AssigneeKyushu University, National University Corporation
InventorsKoji NAKABAYASHI, Hiroki SHIMANOE, Jin MIYAWAKI, Seong-Ho YOON
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Abstract
A method for producing mesophase pitch including: step A of preparing pitch component a comprising mesogenic component being anisotropic component and solvent component being isotropic component; step B of preparing pitch component a′ comprising mesogenic component being anisotropic component and solvent component being isotropic component, separating mesogenic component from the pitch component a′ to obtain pitch component b mainly comprising mesogenic component; and step C of mixing the pitch component a, and the pitch component b and performing heat-treatment to the mixture.
Claims10
A method for producing mesophase pitch for carbon fiber comprising:
- performing pressurized heat-treatment to heavy residual oil, then performing inert gas blowing heat-treatment to prepare pitch component a comprising mesogenic component being anisotropic component and solvent component being isotropic component;
- performing pressurized heat-treatment to heavy residual oil, then performing inert gas blowing heat-treatment to prepare pitch component a′ comprising mesogenic component being anisotropic component and solvent component being isotropic component, separating mesogenic component from the pitch component a′ to obtain pitch component b mainly comprising mesogenic component;
- and
- mixing the pitch component a comprising mesogenic component and solvent component, and the pitch component b mainly comprising mesogenic component and performing heat-treatment to the mixture.
Dependencies are inferred from the claim text.