Amorphous hydrated metal oxide sizing for composite fibers

Details Amorphous hydrated metal oxide sizing for composite fibers Amorphous hydrated metal oxide sizing for composite fibers

C - Chemistry, Metallurgy

08

K

117/110, 154/93,

C08K 7/04 (2006.01) C03C 25/38 (2006.01) C03C 25/42 (2006.01) C04B 41/45 (2006.01) C08J 5/06 (2006.01) D06M 11/45 (2006.01) D06M 11/46 (2006.01)

Patent

CA 1332897

A method of coating a fiber resulting in a more oxidative resistant fiber. The method comprises mixing metal alkoxides and basic metal carboxylates in amounts such that the metal alkoxides are substantially water soluble. The basic metal carboxylate has the formula: R'-CO2M'(OH)n? zHm X where (i) R' is an organic radical; (ii) M' is any metal that has a valence of 3 or 4; (iii) x is BO3-, SO4=, Cl-, NO3-, R"CO2-, where R" is an organic radical; (iv) n and m correspond to the valence of (M'-1) and x respectively; and (v) Z has a value sufficient so that said R'-CO2M'(OH)n is substantially water soluble. A layer of the solution is applied to the fiber and the fiber is exposed to a temperature sufficient to form an oxide surface. The fibers can be used to make polymeric composites. Fibers having the above-described coating are impregnated with a resin, stacked in layers and exposed to pressure and optional heat.

613888

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