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    • 15. 发明授权
    • Titanium coated asbestos fiber
    • 钛涂层石棉纤维
    • US4388149A
    • 1983-06-14
    • US310722
    • 1981-10-13
    • Frank M. KimmerlePierre Roberge
    • Frank M. KimmerlePierre Roberge
    • C03C25/42C04B30/02H01M2/16D21H5/18
    • D21H13/42C03C25/42C04B30/02D21H5/183H01M2/1613Y10T428/2907Y10T428/2949Y10T428/31656
    • The invention relates to a chrysotile asbestos fiber substantially coated on its exterior surface with hydrated titanium dioxide, the titanium dioxide content being from 0.5 to 35% by weight, part of the titanium dioxide being chemically bonded to the asbestos fiber and the remaining titanium dioxide being retained by electrostatic bond, said modified fiber having an Mg:Si ratio of from less than 3:2 to 2:2 when calculated on an atomic number ratio, a Ti:Si ratio of from more than 0:2 to less than 1:2 and said modified fiber being also characterized by an infrared spectrum wherein the relative peaks at 1082, 1025 and 957 cm.sup.-1 have been substantially altered in their intensity and as shown in curves C and D of FIG. 1 , said fiber resisting leaching of the Mg ions by strong acids 3 to 6 times better than natural asbestos fibers and resisting leaching of SiO.sub.2 groups in strong alkali media 1.5 to 3 times better than unmodified chrysotile fibers. The novel titanated fibers are useful in the manufacture of diaphragm for separating the electrode compartments of electrolytic cells.
    • 本发明涉及一种温和石棉纤维,其基本上在其外表面上涂覆有水合二氧化钛,二氧化钛含量为0.5至35重量%,部分二氧化钛与石棉纤维化学键合,剩余的二氧化钛为 通过静电键保持,当以原子数比计算时,所述改性纤维的Mg:Si比率小于3:2至2:2,Ti:Si比大于0:2至小于1: 2和所述改性纤维的特征还在于红外光谱,其中1082,1025和957cm-1处的相对峰已经在它们的强度上基本上改变,并且如图2的曲线C和D所示。 1,所述纤维可以抵抗Mg离子的强酸,比天然石棉纤维强3至6倍,耐碱性介质中SiO 2团浸出比未改性的温石棉纤维高1.5〜3倍。 新型钛酸盐纤维可用于制造用于分离电解槽电极隔室的隔膜。