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Preparation method of high-strength composite porous biological ceramic

A composite ceramic and porous ceramic technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of low strength and easy decomposition of hydroxyapatite

Inactive Publication Date: 2012-12-12
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of low strength of the existing porous bio-composite ceramics and the easy decomposition of hydroxyapatite during high-temperature sintering, and provide a preparation method of high-strength porous bio-composite ceramics

Method used

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  • Preparation method of high-strength composite porous biological ceramic
  • Preparation method of high-strength composite porous biological ceramic

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Experimental program
Comparison scheme
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specific Embodiment approach 1

[0016] Specific Embodiment 1: The preparation method of high-strength porous biocomposite ceramics in this embodiment is specifically prepared according to the following steps:

[0017] 1. Weigh 49.1%~85.9% of submicron ceramic powder with a particle size of 0.3μm~0.5μm, 0~0.5% of binder, 0.6%~1% of dispersant and 13.5%~49.4% of The sum of the contents of each component is 100%. Put the weighed submicron ceramic powder, binder, dispersant and solvent into a ball mill jar for ball milling for 24 hours, and control the ball milling rate to 120r / min~200r / min. The mass ratio of ball to material is 2~3:1, and the mixed slurry is obtained;

[0018] 2. Put the mixed slurry in a vacuum drying oven, vacuum degassing for 30min~40min, then pour the mixed slurry into the mold, and place the bottom of the mold in absolute ethanol at a temperature of -15°C~40°C In the process, condense and form for 10min~20min to obtain solid materials;

[0019] 3. Place the solid material in a vacuum fre...

specific Embodiment approach 2

[0022] Embodiment 2: This embodiment is different from Embodiment 1 in that: the submicron ceramic powder in step 1 is alumina or zirconia. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 1 and Embodiment 2 in that: in step 1, the binder is polyvinyl alcohol PVA-124, polyvinyl alcohol PVA-217 or polyvinyl alcohol PVA-205. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparation method of composite biological ceramic, in particular to a preparation method of high-strength composite porous biological ceramic. The preparation method solves the problems that existing composite porous biological ceramic is low in strength and hydroxyapatite is prone to decomposition during high-temperature sintering, and includes the steps: firstly, obtaining mixed slurry; secondly, obtaining solid materials; thirdly, obtaining a dry porous ceramic biscuit; fourthly, obtaining a porous ceramic support of a layered structure; and fifthly, obtaining the high-strength porous composite biological ceramic by means of hydro-thermal treatment. By the preparation method, a porous carrier of a high-strength layered structure is obtained by means of directional condensation forming, and the porous support can obtain biological activity by means of hydro-thermal treatment while the problem that hydroxyapatite is prone to decomposition during high-temperature sintering is solved. The porosity of the high-strength composite porous biological ceramic prepared by the preparation method is above 63%, and the compression strength can be above 100MPa. The high-strength composite porous biological ceramic can serve as a substitute for bearing skeletons.

Description

technical field [0001] The invention relates to a preparation method of biocomposite ceramics. Background technique [0002] As the largest tissue and organ of the human body, bone bears important responsibilities for life activities, but it is the most likely to cause defects. Every year, millions of patients with bone tissue damage need surgical treatment. Bone transplantation has become the second largest medical demand after blood transfusion. How to obtain more and better bone tissue regeneration and repair materials to repair human life and recreate health has become the common pursuit and motivation of many scientists around the world. . At present, some biomedical polymer materials, degradable synthetic polymer materials and absorbable bioceramics are widely used because they can induce special biological reactions or regulate biological activities at the interface of materials, resulting in the formation of bonds between tissues and materials. Used as a biomateria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B38/00C04B41/85C04B35/10C04B35/48
Inventor 胡路阳张善美
Owner ANHUI UNIV OF SCI & TECH