Composite organism ceramic material composed of apatite-wollastonite/beta-tricalcium phosphate

A technology of composite bioceramics and tricalcium phosphate, which is applied in the fields of inorganic non-metallic materials and biomedical engineering, and achieves the effects of good biological activity, favorable adhesion and good cell compatibility.

Inactive Publication Date: 2007-03-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After searching: there are no patents and paper reports on this system as a bone repair material or bone tissue engineering repair material in China

Method used

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  • Composite organism ceramic material composed of apatite-wollastonite/beta-tricalcium phosphate
  • Composite organism ceramic material composed of apatite-wollastonite/beta-tricalcium phosphate

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example 1

[0021] 1. Using the self-developed sol-gel method to prepare highly active and fine AW GC precursor powder (patent application number: 200510021184.0), the basic steps are: first fully hydrolyze ethyl orthosilicate and triethyl phosphate in ethanol , and then dissolve the easily hydrolyzed inorganic salts in organic reagents successively, and make them react with water to form a gel through hydrolysis and polycondensation process, then aging, drying, and thermally decomposing at 500°C to remove residual organic matter and Moisture, the preparation of fine precursor powder;

[0022] 2. Preparation of TCP precursor powder: high-purity fine CaCO 3 Blend into a paste. Add phosphoric acid solution dropwise under ultrasonic stirring at room temperature, react according to Ca / P=1.5, wash and dry the precipitate to obtain the TCP precursor;

[0023] 3. Preparation of apatite-wollastonite bio-glass ceramics (AW GC) / β-tricalcium phosphate (β-TCP) composite bioactive ceramics:

[0024...

example 2

[0029] 1. Prepare AW basic glass powder by melting method, the basic steps are: MgO4.6, CaO44.9, SiO 2 34.2, P 2o 5 16.3, CaF 2 0.5 of the mixture (heaviness percentage) was melted in a platinum crucible at 1450°C for 2 hours, then quenched into a frit, crushed and sieved to obtain glass powder;

[0030] 2. Preparation of TCP precursor powder: Ca(NO 3 ) 2 and (NH 4 ) 2 HPO 4 Carry out chemical precipitation reaction, adjust the pH to 11-12 with ammonia water, react for 12 hours, filter, wash and dry to obtain the precursor powder;

[0031] 3. Preparation of apatite-wollastonite bio-glass ceramics (AW GC) / β-tricalcium phosphate (β-TCP) composite bioactive ceramics: AW GC / β-TCP was prepared in accordance with the method described in step 3 of Example 1 Composite bioactive ceramics.

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Abstract

The invention discloses a composite biological active ceramic material of Apatite-Wollastonite/beta-tricalcium phosphate (AW/beta-TCP), which comprises the following steps: adopting sol-gel process to prepare AW former powder; preparing TCP former powder through chemical sediment method; sieving TCP former powder through 60-order standard sieve; putting AW former powder and TCP former particle in the material mixing machine according to different proportion; adding certain rate corresponding to powder weight geoceric acid or naphthalene particle with grain size at 20-30 order; making 5wt% polyvinyl alcohol solution as adhesive; blending completely; moulding; drying; sintering to obtain porous product.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials and biomedical engineering, and relates to a new bone repair material—apatite / wollastonite (AW) / β-tricalcium phosphate (β-TCP) composite bioactive ceramic material. Background technique [0002] In 1982, Kokubo and others developed the MgO-CaO-SiO2-P2O5 series AW bioactive glass ceramics containing apatite (A, apatite), wollastonite (W, wollastonite) crystal phase and glass phase. A-W bioactive glass-ceramics have good biocompatibility. After the product is implanted in the body, it is safe, non-toxic, and has no adverse reactions such as rejection, inflammation, and tissue necrosis, and has high mechanical strength. Its biological activity is also excellent. When it is implanted in the body, it can form an apatite layer through a surface chemical reaction in a short period of time, thereby firmly bonding with the bone in the body and forming an osseointegration. Since the 1980s, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/447C04B35/622C04B38/06
Inventor 杨为中周大利尹光福陈槐卿张云肖斌欧俊
Owner SICHUAN UNIV
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