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Hydroxyapatite-containing material, method for synthesizing and forming hydroxyapatite-containing material in one step and application of hydroxyapatite-containing material

A technology of calcium hydroxyphosphate and calcium phosphate salt, which is applied in the direction of chemical instruments and methods, applications, and other household appliances, and can solve problems such as low production efficiency, unstable calcium hydroxyphosphate products, and long synthesis time, and achieve no three wastes discharge , good environmental conditions and high product purity

Pending Publication Date: 2021-01-08
YUNNAN ADDIPHOS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The first object of the present invention is to provide a simple and easy-to-obtain method for the synthesis and molding of calcium hydroxyphosphate materials in one step, so as to solve the instability of calcium hydroxyphosphate products prepared in the prior art, long synthesis time, and production problems. Process technical problems such as low efficiency

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  • Hydroxyapatite-containing material, method for synthesizing and forming hydroxyapatite-containing material in one step and application of hydroxyapatite-containing material
  • Hydroxyapatite-containing material, method for synthesizing and forming hydroxyapatite-containing material in one step and application of hydroxyapatite-containing material
  • Hydroxyapatite-containing material, method for synthesizing and forming hydroxyapatite-containing material in one step and application of hydroxyapatite-containing material

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Embodiment 1

[0045]This embodiment provides a preparation and molding method of a hydroxyl-containing calcium phosphate material, including the following steps:

[0046](1) Using calcium hydrogen phosphate dihydrate CaHPO4·2H2O and calcium hydroxide Ca(OH)2Mixed as raw material of mixed inorganic calcium salt, Na2HPO4Aqueous solution as a feed ingredient;

[0047]Among them, among the mixed inorganic calcium salt raw materials, calcium hydrogen phosphate dihydrate CaHPO4·2H2O and calcium hydroxide Ca(OH)2The total Ca / P ratio is 1.576; CaHPO4·2H2The average particle size D50 of O is 4-6μm, Ca(OH)2The average particle size D50 is 5-8μm;

[0048](2) Weigh 10g, 1M Na of the mixed inorganic calcium salt raw material in step (1)2HPO4Place 2.6 mL of the solution in a porcelain dish and mix, add 50 g of water under normal temperature and pressure, and stir evenly to obtain a mixed slurry. Spread the mixed slurry naturally under vibration conditions, add a small amount of water to cover the surface of the slurry,...

Embodiment 2

[0052]This embodiment provides a preparation and molding method of a hydroxyl-containing calcium phosphate material, including the following steps:

[0053](1) Using anhydrous calcium hydrogen phosphate CaHPO4With calcium hydroxide Ca(OH)2Mixed as raw material of mixed inorganic calcium salt, Na2HPO4Aqueous solution as a feed ingredient;

[0054]Among them, in the mixed inorganic calcium salt raw materials, anhydrous calcium hydrogen phosphate CaHPO4With calcium hydroxide Ca(OH)2The total Ca / P ratio is 1.6; CaHPO is processed by a gas micro-pulverizer4And Ca(OH)2, Make its average particle size D50 4-6μm.

[0055](2) Weigh 10g, 1M Na of the mixed inorganic calcium salt raw material in step (1)2HPO4Put 2.6mL of the solution in a porcelain dish and mix it, add 50g of water under normal temperature and pressure conditions, stir evenly to obtain a mixed slurry, flatten the mixed slurry naturally under vibration conditions, add a small amount of water to cover the surface of the slurry, and cover...

Embodiment 3

[0059]This embodiment provides a preparation and molding method of a hydroxyl-containing calcium phosphate material, including the following steps:

[0060](1) Using calcium hydrogen phosphate dihydrate CaHPO4·2H2O is mixed with calcium oxide CaO as the raw material of mixed inorganic calcium salt, (NH4)2HPO4The aqueous solution is used as a feed ingredient.

[0061]Among them, among the mixed inorganic calcium salt raw materials, calcium hydrogen phosphate dihydrate CaHPO4·2H2The total Ca / P ratio of O to calcium oxide CaO is 1.576. CaHPO4·2H2The average particle size D50 of O is 4-6μm, and the average particle size D50 of CaO is 5-8μm;

[0062](2) Weigh 10g of mixed inorganic calcium salt raw materials in step (1), 5M (NH4)2HPO4Place 2.6 mL of the solution in a porcelain dish and mix, add 50 g of water under normal temperature and pressure conditions, and stir evenly to obtain a mixed slurry. Spread the mixed slurry naturally under vibration conditions, add a small amount of water to cover ...

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Abstract

The invention relates to the technical field of preparation of novel inorganic materials, in particular to a hydroxyl-containing calcium phosphate material, a method for synthesizing and forming the hydroxyl-containing calcium phosphate material in one step and application of the hydroxyl-containing calcium phosphate material. The method comprises the following steps: injecting mixed slurry obtained by mixing inorganic calcium salt powder and supplementing liquid into a mold at normal temperature and normal pressure, reacting under a closed condition, and curing to form a solid material containing hydroxyapatite. According to the invention, the inorganic calcium salt powder and the supplementing liquid are adopted to finish synthesis of a hydroxyapatite molecular structure in one step, andsolidification is performed to form a corresponding hydroxyapatite stone block, so that the material has a certain mechanical strength and also has trimmable plasticity. According to the production process technical method, a production process technology which is low in cost, simple and convenient to process and free of 'three wastes' emission is provided for application of hydroxyapatite in dentistry, bone marrow, bioengineering materials, phosphate ceramics and the like.

Description

Technical field[0001]The invention relates to the new technical field of preparation and application of novel inorganic materials, in particular to a material containing hydroxyl calcium phosphate, and a method and application for completing synthesis and molding thereof in one step.Background technique[0002]Calcium hydroxyphosphate or hydroxyapatite powder, not only can be used as a bioengineering material because of its bionic function, but also is indispensable as a dispersant for resin products in petrochemical industry because of its very good dispersibility; Phosphate ceramics are used as filter materials and are also used in drinking water purification.[0003]The existing processes for preparing hydroxyapatite powder can be summarized as: chemical precipitation method and sol-gel method.[0004]Chemical precipitation method: Using inorganic calcium salt and phosphate as raw materials, the two are dissolved in water at a certain concentration to form a solution, and then mixed wi...

Claims

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Application Information

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IPC IPC(8): C04B28/34C04B40/02C04B38/04C04B35/447C04B35/626B28B13/02A61L27/12A23L29/00C02F1/00
CPCA23V2002/00A61L27/12A23L29/00A23L29/015B28B13/02C04B28/34C04B35/447C04B35/626C04B38/04C04B40/0286C04B2111/00836C04B2235/3208A23V2250/1578C04B22/064C04B22/002
Inventor 李敬民李雯
Owner YUNNAN ADDIPHOS TECH CO LTD
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