Polyphoshate ceramic and method of making same

Details Polyphoshate ceramic and method of making same Polyphoshate ceramic and method of making same

C - Chemistry, Metallurgy

04

B

C04B 35/447 (2006.01) C04B 35/624 (2006.01)

Patent

CA 2576637

The present invention describes a porous polyphosphate ceramic, which comprises a network of interconnected particles or fibers, each of these particles has an amorphous polyphosphate core and an outer dried polyphosphate hydrogel layer. The composition of the hydrogel polyphosphate layer includes an amorphous polyphosphate, water and a multivalent cation. The network is interconnected through connections made in a region of the hydrogel polyphosphate layer between adjacent integrated polyphosphate particles that is later dried. The invention also describes the method of producing the porous polyphosphate ceramic by adding water to polyphosphate particles, partially dissolving the particles, to produce a hydrogel layer, allowing the hydrogel layer between adjacent particles to integrate and drying the integrated particles to produce the porous ceramic.

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