| 摘要 |
A new and useful composite fiber and its use, especially its use as a dimensionally stable separator. The composite fiber is comprised of non-organic particulates bound to an organic polymer in fiber form and prepared by vigorously grinding or shearing a mixture of non-organic particules and organic precursor particles for the polymer at elevated temperature. Many non-organic substances are serviceable and valve metal oxides are highly suitable. The organic polymer fiber is advantageously derived from fluorine-containing polymer. The composite fibers can serve as a filter, for instance as a filter-packing material for column chromatography, or can be suitable for separations, e.g., battery separations. The fiber may be compressed, or compressed and sintered, and thereby be useful as bearings or gaskets. When used as a separator, the separator is preferably a diaphragm for use in electrolytic cells for the production of chlorine and caustic, and the method of its preparation is preferably by direct coating onto a foraminous cathode of an electrolytic cell from a slurry or paste of composite fibers, followed by drying and heating. |
