METHOD FOR PRODUCING METAL OXIDE FIBER
To provide a production method for improving towing properties of polymetalloxane and improving the productivity of a metal oxide fiber with excellent heat resistance and strength.SOLUTION: A method for producing a metal oxide fiber comprises the following steps (A) to (C) in sequence: (A) a step of...
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Zusammenfassung: | To provide a production method for improving towing properties of polymetalloxane and improving the productivity of a metal oxide fiber with excellent heat resistance and strength.SOLUTION: A method for producing a metal oxide fiber comprises the following steps (A) to (C) in sequence: (A) a step of preparing a mixture liquid containing a polymetalloxane having a structural unit represented by general formula (1) below, a water-soluble polymer, and an organic solvent in which a composition ratio of the polymetalloxane in the solid content is 40 to 80 wt% and a composition ratio of the water-soluble polymer is 20 to 60% wt%; (B) a step of spinning the above mixture liquid as a spinning stock solution to form a metal oxide fiber precursor; and (C) a step of firing the metal oxide fiber precursor to form the metal oxide fiber.SELECTED DRAWING: None
【課題】ポリメタロキサンの曳糸性を向上し、耐熱性と強度に優れた金属酸化物繊維の生産性を向上する製造方法を提供する。【解決手段】下記の工程(A)~(C)を順に行うことを特徴とする金属酸化物繊維の製造方法。(A)下記一般式(1)で表される構造単位を有するポリメタロキサンと、水溶性ポリマーと、有機溶剤と、を含み、固形分中の前記ポリメタロキサンの構成比が40~80重量%であり、前記水溶性高分子ポリマーの構成比が20~60%重量%である混合液を調整する工程。(B)前記混合液を紡糸原液として紡糸し、金属酸化物繊維前駆体とする工程。(C)前記金属酸化物繊維前駆体を焼成し、金属酸化物繊維とする工程。TIFF2022142854000006.tif38170【選択図】なし |
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