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Preparation method of wollastone/tricalcium phosphate composite bio-active material

A technology of composite biological materials and tricalcium phosphate, applied in the field of biological materials, can solve the problems of high energy consumption in the preparation process, limitation of sample shape design, and high cost

Inactive Publication Date: 2002-09-04
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0004] However, the above-mentioned wollastonite / tricalcium phosphate composite biological material designed by P.N.De Aza et al. also has the following disadvantages: the temperature is high (1390-1500°C) and the time is long (greater than 40 hours) during the ceramic sintering process, so the preparation The process consumes a lot of energy and costs high
In addition, because it cannot be preformed, the shape design of the sample is also limited

Method used

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Embodiment Construction

[0018] Below in conjunction with example the present invention will be further described, but in no way limited to embodiment.

[0019] The operation steps are as follows

[0020] (1) 124.85 grams of analytically pure Ca (NO 3 ) 2 4H 2 O was added to an appropriate amount of deionized water, stirred until dissolved and clarified, an appropriate amount of ammonia water was added, and the pH value of the solution was adjusted to 12.0, and the volume of the solution was 1.25 liters at this time;

[0021] (2) Add 38 grams of β-TCP powder to the above Ca(NO 3 ) 2 In the solution, stir vigorously for 30 minutes to make the added powder disperse evenly;

[0022] (3) 145.55 grams of analytically pure Na 2 SiO 3 9H 2 O was added to an appropriate amount of deionized water, stirred until dissolved and clarified, equipped with 1.25 liters of solution, and its pH value was measured to be 13.40;

[0023] (4) The Ca(NO 3 ) 2 and β-TCP powder suspension, while the above-mentioned ...

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Abstract

The preparation method of wollastonite / tricalcium phospate composite biological material includes the following steps: using Na2SiO3 or silicon sol as silicon source and using Ca(Na3)2 or CaCl2 and Ca(OH)2 as calcium source, respectively preparing their solutions with a certain concentration and pH value, adding proper quantity of beta-tricalcium phosphate (beta-TCP) to calcium contained solution, uniformly dispersing, then utilizing chemical coprecipitation process to prepare calcium silicate hydrate and beta-TCP powder uniformly-mixed precipitate, washing and drying, roasting at 800-900 deg.c to obtain wollastonite and beta-TCP composite powder, granulating, dry-pressing and forming, sintering for 2-5 hr. at 1300-1400 deg.C to obtain the invented wollastonite / tricalcium phosphate composite biological ceramics. According to the different requirements, the above-mentioned composition can be resulated, specially the formation of in-situ porous structure is favourable for growing of tissue and blood vessel, etc.

Description

technical field [0001] The invention relates to a preparation method of wollastonite / tricalcium phosphate composite biological material, belongs to the field of biological materials, and is mainly used in filling, repairing and rebuilding of human hard tissues (bones and teeth) in biomedicine. Background technique [0002] The A-W glass-ceramics invented by T.Kokubo et al. is the bioactive ceramic material with the best mechanical properties currently known. As one of the two microcrystalline phases in A-W glass ceramics (the other is apatite), wollastonite not only makes an important contribution to the mechanical properties of A-W glass ceramics, but also has high biological activity. T.Kokubo studied CaO-SiO 2 -P 2 o 5 After the system bioactive glass, it is pointed out that various bioactive materials with different functions can be prepared in CaO-SiO 2 developed on the basis of bio-based glass. In view of this, scholars in the field of biomaterials began to abando...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/02A61K6/838A61L31/02A61L31/16C04B35/01C04B35/622C04B35/64
Inventor 黄翔江东亮谭寿洪
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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