Method for making silica fibers

Details Method for making silica fibers Method for making silica fibers

1980-01-07

1982-06-01

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 31, 156663, 423335, 423339, C03C 2506, C03C 1500, B44C 122

Patent

active

043326005

ABSTRACT:
Process for the production of silica fibers of the type in which alkali water glass is dry spun into water-containing alkali silicate fibers which are then contacted with solutions containing hydrogen ions for transforming into silica fibers, the improvement being dry-spinning glass free from non-alkaline compounds having a molar ratio of alkaline oxide to silic dry dioxide of from about 1:3 to 1:1.9 and a viscosity of about 10-700 Pa measured at 30.degree. C., at 10.degree.-50.degree. C. in a drying funnel of a temperature of more than 100.degree. C., at a discharge velocity of minimum 5 m/min.

REFERENCES:
patent: 2338463 (1944-01-01), Skaupy et al.
patent: 2969272 (1961-01-01), Teja
patent: 3061495 (1962-10-01), Alford
patent: 3092531 (1963-06-01), Labino
patent: 3480390 (1969-11-01), Reinhardt et al.
patent: 3560177 (1971-02-01), Lajarte et al.
patent: 4200485 (1980-04-01), Price et al.

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