Hardening composite materials based on calcium phosphates (hydroxyapatite, monocalcium phosphate monohydrate) and polymer binders (polyvinyl alcohol, polyvinyl pyrrolidone) have been obtained. It was found that with an increase in the content of acidic calcium phosphate in the composition, the amount of brushite and tricalcium phosphate increases. The introduction of polymer binders into the composition of hardening composite materials increases their mechanical strength and inhibits the structural phase transformations of calcium phosphates at 800 ° C. Compositions
based on 5 & # 37; solutions of polymers and powders of hydroxyapatite or its mixture with a mass content of 10 - 40 & # 37; monocalcium phosphate monohydrate can be used as a consumable for 3D printing calcium phosphate biomaterials and ceramics
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