METHOD FOR MANUFACTURING CARBON FIBER AND CARBON FIBER COMPOSITE BOTTLE

To provide a method for manufacturing a carbon fiber and a carbon fiber composite bottle.SOLUTION: A method for manufacturing a carbon fiber includes the steps of: placing a carbon fiber as an anode in an electrolyte, where the electrolyte is nitric acid, sulfuric acid, phosphoric acid, acetic acid, ammonium bicarbonate, sodium hydroxide, or potassium nitrate; and performing a surface treatment, where a surface of the carbon fiber is oxidized by active oxygen generated by anodic electrolysis, thereby introducing oxygen-containing functional groups to the surface. The disclosure also provides a carbon fiber composite bottle, which includes a bottle body and a carbon fiber, where the bottle body is a type III bottle or a type IV bottle, and the carbon fiber surrounds the bottle body, has a surface oxygen concentration of 5-35%, and has a surface roughness of 5-25 nm.SELECTED DRAWING: Figure 1 【課題】本発明は、炭素繊維の製造方法及び炭素繊維複合ボトルを提供する。【解決手段】炭素繊維の製造方法は、炭素繊維を陽極として、硝酸、硫酸、リン酸、酢酸、重炭酸アンモニウム、水酸化ナトリウム、又は硝酸カリウムである電解液に入れる工程と、表面処理を行い、陽極電解による活性酸素によって炭素繊維の表面を酸化して、酸素含有官能基を導入する工程と、を含む。炭素繊維複合ボトルは、タイプ３のボトル又はタイプ４のボトルであるボトル本体と、ボトル本体を覆い、表面酸素濃度が５～３５％であり、表面粗さが５～２５ナノメートルである炭素繊維と、を含む。【選択図】図１