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Process for preparing processable biological active glass ceramic material

A technology of bioactive glass and ceramic materials, which is applied in the field of preparation of machinable bioactive glass ceramic materials, can solve the problems of unfavorable nanoparticle introduction, easy precipitation, and easy volatilization, so as to maintain sample purity, large specific surface area, gel The effect of small particles

Inactive Publication Date: 2007-10-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the traditional melting method is used to prepare biological glass-ceramics, there are the following disadvantages: (1) The melting temperature is generally high, above 1500 ° C, and some components in the glass ingredients are easy to volatilize at high temperatures, so that the prepared glass-ceramic components cannot be strictly controlled. It meets the design requirements; (2) due to the use of crucibles, it is easy to cause component pollution; (3) it is easy to precipitate some unnecessary crystal phases during pouring or water quenching; (4) it is difficult to achieve the required (5) When doping, impurity particles exist in the state of ions or molecules at high temperature, and are easy to form with other components during crystallization treatment. Heterogeneous phase, thus not conducive to the introduction of nanoparticles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: 1) Preparation of hydroxyapatite precursor sol

[0014] Calcium nitrate and phosphorus pentoxide are dissolved in dehydrated alcohol respectively by the mass ratio of 1: 3 and 1: 5 to make the alcoholic solution of calcium nitrate and the alcoholic solution of phosphorus pentoxide, then, at normal temperature, press Ca / P=1.67 molar ratio, the alcoholic solution of phosphorus pentoxide is added dropwise in the alcoholic solution of calcium nitrate and mixed evenly, and the mixed solution is left to stand to obtain a colorless and transparent hydroxyapatite precursor sol;

[0015] 2) Preparation of phlogopite precursor sol

[0016] According to the molecular formula KMg of phlogopite 3 (Si 3 Al)O 10 f 2 , to determine tetraethyl orthosilicate (TEOS), Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 The molar ratio is 6:2:4:2:2, Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 Add deionized water in turn, stir at 65°C at a...

Embodiment 2

[0020] Embodiment 2: 1) preparation of hydroxyapatite precursor sol

[0021] Dissolve calcium nitrate and phosphorus pentoxide in dehydrated alcohol to make the alcoholic solution of calcium nitrate and the alcoholic solution of phosphorus pentoxide respectively by the mass ratio of 1: 3.6 and 1: 4.3, then, at normal temperature, press Ca / P=1.67 molar ratio, the alcoholic solution of phosphorus pentoxide is added dropwise in the alcoholic solution of calcium nitrate and mixed evenly, and the mixed solution is left to stand to obtain a colorless and transparent hydroxyapatite precursor sol;

[0022] 2) Preparation of phlogopite precursor sol

[0023] According to the molecular formula KMg of phlogopite 3 (Si 3 Al)O 10 (OH) 1 f 1 , to determine tetraethyl orthosilicate (TEOS), Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 The molar ratio of Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 Add deionized water in sequence, stir at 58°C at a...

Embodiment 3

[0027] Embodiment 3: 1) Preparation of hydroxyapatite precursor sol

[0028] Dissolve calcium nitrate and phosphorus pentoxide in dehydrated alcohol to make the alcoholic solution of calcium nitrate and the alcoholic solution of phosphorus pentoxide respectively by the mass ratio of 1: 3.2 and 1: 4.6, then, at normal temperature, press Ca / P=1.67 molar ratio, the alcoholic solution of phosphorus pentoxide is added dropwise in the alcoholic solution of calcium nitrate and mixed evenly, and the mixed solution is left to stand to obtain a colorless and transparent hydroxyapatite precursor sol;

[0029] 2) Preparation of phlogopite precursor sol

[0030] According to the molecular formula KMg of phlogopite 3 (Si 3 Al)O 10 (OH) 0.5 f 1.5 , to determine tetraethyl orthosilicate (TEOS), Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 The molar ratio is 6:2:4.5:1.5:2, Al(NO 3 ) 3 9H 2 O, Mg(NO 3 ) 2 ·6H 2 O, MgF 2 and KNO 3 Add deionized water in turn, st...

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Abstract

A process for preparing a machinable bioactive glass ceramics includes such steps as dripping the alcohol solution of P2O5 to the alcohol solution of calcium nitrate, stirring to obtain precursor A, mixing ethyl silicate, Al(NO3)3*9H2O, Mg(NO3)2*6H2O, MgFe and KNO3, stirring to obtain precursor B, mixing precursor A with B, adding ZrO2, stirring to become sol, supercritical CO2 drying, crystallizing and sintering.

Description

technical field [0001] The invention relates to a preparation method of a bioactive glass-ceramic material, in particular to a preparation method of a processable bioactive glass-ceramic material. Background technique [0002] The traditional preparation of biological glass-ceramic materials often adopts the melting method, that is, the batch material is placed in a crucible, and is heated at a high temperature to form a uniform, bubble-free glass liquid that meets the forming requirements. Or pour the glass liquid into the mold, and prepare the biological glass ceramics by casting method. When the traditional melting method is used to prepare biological glass-ceramics, there are the following disadvantages: (1) The melting temperature is generally high, above 1500 ° C, and some components in the glass ingredients are easy to volatilize at high temperatures, so that the prepared glass-ceramic components cannot be strictly controlled. It meets the design requirements; (2) du...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/02C03B32/02
CPCC03C10/0045C03C1/006C03C4/0007C03C10/0018C03C10/16
Inventor 孙晓明宁青菊史永胜王秀峰于成龙
Owner SHAANXI UNIV OF SCI & TECH