Process for preparing self-growing calcium phosphate crystal whisker strengthened porous bioceramic materials

A bioceramic material, calcium phosphate technology, which is applied in the field of bioceramic preparation, can solve the problems of hindering the densification of matrix particles and the inconspicuous effect of whisker toughening.

Inactive Publication Date: 2004-11-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of external whiskers, the whiskers are uniformly dispersed, tightly combined with the matrix interface, and the whiskers hinder the densification of the matrix particles, resulting in the whisker toughening effect is not obvious

Method used

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  • Process for preparing self-growing calcium phosphate crystal whisker strengthened porous bioceramic materials
  • Process for preparing self-growing calcium phosphate crystal whisker strengthened porous bioceramic materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: β-calcium phosphate porous ceramics

[0022] Raw materials: medical grade calcium carbonate (CaCO 3 ) and calcium hydrogen phosphate dihydrate (CaHPO 4 2H 2 O) is a raw material, and it is 1.5 to accurately weigh 171.1 grams of CaHPO by Ca / P mol ratio 4 2H 2 O) and 50.0 grams of CaCO 3 , Pour the weighed material into a ball mill jar, add deionized water and zirconia balls. According to the ratio of material: grinding ball: water, the mass ratio is 1:3:2.2, the mixture is high-speed ball milled for 16 hours, dried at a constant temperature of 85°C in an oven, and calcined at 830°C after drying to obtain an average particle size of 380nm. Beta-calcium phosphate powder 154.9 g.

[0023] Process: SiO 2 , Na 2 O and CaF 2 The mixed powder with a total weight of 50 g was weighed according to a molar ratio of 2:1:4, and the powder was pre-calcined in a calciner at 960° C. and kept for 1.5 hours; after cooling, the frit was ball-milled for use. Take by wei...

Embodiment 2

[0024] Example 2: Zirconia / 10wt% β-calcium phosphate porous ceramic

[0025] Raw materials: medical grade calcium carbonate (CaCO 3 ) and calcium hydrogen phosphate dihydrate (CaHPO4 2H 2 (2) is a raw material, and it is 1.67 to accurately weigh 342.2 grams of calcium hydrogen phosphate dihydrate (CaHPO 4 2H 2 O) and 134 grams of calcium carbonate (CaCO 3 ), pour the weighed material into a ball mill jar, add deionized water and zirconia balls. Proportioning is carried out according to the mass ratio of material: grinding ball: water is 1:3:2.2, and the mixed material is ball milled at high speed for 24 hours. It was dried in an oven at a constant temperature of 85° C., and then calcined at 740° C. to obtain 309.9 grams of hydroxyapatite powder with an average particle diameter of 300 nm.

[0026] Process: Na 2 SiO 3 , MgCO 3 , CaF 2 The mixed powder with a total weight of 50 grams was weighed according to a molar ratio of 1:2:2, and the mixed powder was pre-calcined ...

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Abstract

The invention discloses a process for preparing self- growing calcium phosphate crystal whisker tough porous biological ceramic material by using beta-calcium phosphate or hydroxyapatite powder, multiple phase addition agent, zirconium oxide and bonding agent as raw material through the steps of preparing multiple phase addition agent, making slip, modeling, blank pre-calcination and sintering process.

Description

technical field [0001] The invention relates to a preparation method of a self-growing calcium phosphate whisker tough porous bioceramic material, which belongs to the technical field of bioceramic preparation. Background technique [0002] Bone repair materials have been widely used in orthopedics, orthopedics and dentistry. There are millions of cases of bone defect patients every year in my country alone. Inorganic biomaterials represented by calcium phosphate series have attracted the attention of the medical community because of their good biocompatibility and degradability. In terms of clinical application, in addition to considering that the mineral composition of the material is the same as that of the repaired part, the structure and biomechanical properties of the material will directly affect its clinical application. As a carrier scaffold for specific tissue cells, it must be a porous material with high porosity. In order to meet the ingrowth of different tiss...

Claims

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Application Information

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IPC IPC(8): C04B35/447C04B35/622C04B35/63
Inventor 蔡舒李家顺王彦伟吕宏
Owner TIANJIN UNIV
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