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US 12,460,322 B2Granted
Methods for manufacturing carbon fiber from coal
AssigneeCarbon Holdings Intellectual Properties, LLC
InventorChristopher L. Yurchick
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Abstract
Embodiments discloses herein relate to methods of processing coal. A method to process coal includes subjecting raw coal to a liquefaction process effective to form a pitch resin, subjecting the pitch resin to a variable crystallinity spinning process effective to form raw fiber, and subjecting the raw fiber to a carbonization process effective to form a low thermal conductivity carbon fiber.
Claims12
A method of processing coal, the method comprising:
- subjecting raw coal to a liquefaction process effective to form a pitch resin;
- forming a blend additive from the raw coal;
- subjecting the pitch resin to a variable crystallinity spinning process effective to form raw fiber while adding the blend additive to the pitch resin, the blend additive comprising an anisotropic pitch with a degree of anisotropy between 0% and 80%;
- subjecting the raw fiber to an oxygen stabilization process at a temperature of between about 200° C. and about 300° C.;
- and
- subjecting the stabilized fiber to a carbonization process effective to form a carbon fiber.
3 more elements
Dependencies are inferred from the claim text.