Processing of aluminum oxide fibers

Details Processing of aluminum oxide fibers Processing of aluminum oxide fibers

1974-05-01

1976-03-30

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

106 65, 106 734, 264 63, 264DIG19, D02G 300

Patent

active

039475344

ABSTRACT:
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.

REFERENCES:
patent: 3104943 (1963-09-01), Berry
patent: 3231540 (1966-01-01), Vanderbilt
patent: 3686006 (1972-08-01), Horton
patent: 3760049 (1973-09-01), Borer et al.
patent: 3793041 (1974-02-01), Sowman
patent: 3794707 (1974-02-01), O'Neeill et al.
patent: 3846527 (1974-11-01), Winter et al.
patent: 3853688 (1974-10-01), D'Ambrosio

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