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US 2026/0209998 A1Published application
Sugar-based high-strength carbon fiber and preparation method thereof
AssigneeHarbin Institute of Technology
InventorsJie SHENG, Daming CHEN, Xinghong ZHANG, Weidong FEI
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Abstract
A sugar-based high-strength carbon fiber and a preparation method thereof are provided. The disclosure uses renewable water-soluble sugars as the carbon source, employs water as the solvent, and prepares carbon fiber precursor fibers through wet spinning, followed by pre-carbonization and carbonization treatments so as to achieve the synthesis of carbon fiber.
Claims10
A method for preparing a sugar-based carbon fiber, comprising following steps:
- dissolving gel monomers, water-soluble sugars, and crosslinking agents in water to obtain solution A;
- and adding spinning aids, initiators, and catalysts to the solution A to serve as spinning dope;
- preparing a solution identical to the solution A, and adding ionic gel aids to serve as coagulation bath;
- using a solution obtained by omitting the gel monomers, the crosslinking agents, and the spinning aids from the spinning dope as water bath solution;
- obtaining carbon fiber precursor fibers through wet spinning by using the spinning dope, the coagulation bath, and the water bath solution;
- and
- performing pre-carbonization on the carbon fiber precursor fibers to obtain pre-carbonized fiber;
- then performing carbonization on the pre-carbonized fiber to obtain the sugar-based carbon fiber.
5 more elements
Dependencies are inferred from the claim text.