Silica fibers are fibers made of sodium silcate (water glass). They are used in heat protection (including asbestos substitution) and in packings and compensators. They can be made such that they are substantially free from non-alkali metal compounds.
Sodium silicate fibres may be used for subsequent production of silica fibres, which is better than producing the latter from a melt containing SiO2 or by acid-leaching of glass fibres. The silica fibres are useful for producing wet webs, filter linings and reinforcing the material.
- Water-Containing Water Glass Fibers: United States Patent: 4,471,019, Sep. 11, 1984
- Manufacturing Silica Fibers. United States Patent, 4,332,601, Jun. 1, 1982. Arno Wegerhoff, Woerth and Karlheinz Hillermeier, Wuppertal. All of Fed. Rep. of Germany
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