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    • 9. 发明授权
    • Processing of aluminum oxide fibers
    • 氧化铝纤维的加工
    • US3947534A
    • 1976-03-30
    • US465952
    • 1974-05-01
    • Manfred Mansmann
    • Manfred Mansmann
    • C01F7/00C04B35/622D01F9/00D01F9/08D02G3/00
    • C04B35/62236C01F7/00C04B35/62231Y10S264/19
    • In the production of aluminum oxide fibers comprising dry spinning an aluminum-containing solution to produce fiber and thereafter heat treating the fiber, the improvement which comprises applying to the fiber prior to heat treatment a solution of polyvinyl acetate in a solvent which is inert to the fiber. Advantageously the polyvinyl acetate is present in its solution in a concentration of about 0.1 to 10% by weight and is applied to the fiber in about 0.1 to 3 % by weight. The spinning solution may also contain SiO.sub.2 and polyethylene oxide, and the polyvinyl acetate solution may also contain di-n-butyl phthalate as a plasticizer for the polyvinyl acetate. The fiber bundles are characterized by increased strength and resistance to breaking during further processing.
    • 在生产含氧化铝纤维的氧化铝纤维中,包括含铝溶液以生产纤维,然后对纤维进行热处理,其改进在于,在将聚乙酸乙烯酯溶液在惰性的溶剂中加热处理之前, 纤维。 有利地,聚乙酸乙烯酯在其溶液中以约0.1至10重量%的浓度存在,并以约0.1至3重量%的量施用于纤维。 纺丝溶液也可以含有SiO 2和聚环氧乙烷,聚乙酸乙烯酯溶液也可以含有邻苯二甲酸二正丁酯作为聚乙酸乙烯酯的增塑剂。 纤维束的特征在于在进一步加工期间增加的强度和抗断裂性。