Method of preparing alpha-tricalcium phosphate through low temperature calcining

A tricalcium phosphate, low-temperature calcination technology, applied in chemical instruments and methods, phosphorus compounds, nanotechnology for materials and surface science, etc., can solve problems such as long solidification time and poor mechanical properties of α-tricalcium phosphate, Achieve low cost, low energy consumption and good repeatability

Active Publication Date: 2017-09-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the traditional method to prepare α-tricalcium phosphate has a long solidification time and poor mechanical properties.

Method used

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  • Method of preparing alpha-tricalcium phosphate through low temperature calcining
  • Method of preparing alpha-tricalcium phosphate through low temperature calcining
  • Method of preparing alpha-tricalcium phosphate through low temperature calcining

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Take 20g of β-cyclodextrin, prepare 1L of β-cyclodextrin saturated solution, and then weigh 47.2g of Ca(NO 3 ) 2 4H 2 O was dissolved in the above saturated solution of β-cyclodextrin to obtain Ca 2+ A solution with a concentration of 0.2mol / L was placed in an environment of 25°C for 24 hours; weighed 17.6g (NH 4 ) 2 HPO 4 Prepare 1L PO 4 3- Concentration is the solution of 0.133mol / L; Will (NH 4 ) 2 HPO 4 The solution was added dropwise to the Ca(NO 3 ) 2 4H 2 In the mixed solution of O and β-cyclodextrin, keep stirring, and adjust the pH of the reaction solution with ammonia water to keep it between 10-11. After the addition is completed, continue to stir and react for half an hour. The whole process is at 25°C. environment. After the reaction was completed, the obtained suspension was subjected to suction filtration, washed with distilled water and absolute ethanol during the suction filtration, and ventilated and dried at room temperature for 16 hours t...

Embodiment 2

[0038] Get 5g β-cyclodextrin, prepare 250ml of β-cyclodextrin saturated solution, then weigh 11.8g of Ca(NO 3 ) 2 4H 2 O was dissolved in the above saturated solution of β-cyclodextrin to obtain Ca 2+ For a solution with a concentration of 0.2mol / L, place the solution in an environment of 20°C for 24 hours; weigh 4.4g (NH 4 ) 2 HPO 4 Prepare 250ml PO 4 3- Concentration is the solution of 0.133mol / L; Will (NH 4 ) 2 HPO 4 The solution was added dropwise to the Ca(NO 3 ) 2 4H 2 In the mixed solution of O and β-cyclodextrin, keep stirring, and adjust the pH of the reaction solution with ammonia water to keep it between 10-11. After the dropwise addition is completed, continue to stir and react for half an hour. The whole process is at 20°C. environment. After the reaction was completed, the obtained suspension was subjected to suction filtration, washed with distilled water and absolute ethanol during the suction filtration, and ventilated and dried at room temperatur...

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Abstract

The invention discloses a method of preparing alpha-tricalcium phosphate through low temperature calcining. According to the method, alpha-cyclodextrin is taken as the template, Ca(NO3)2.4H2O, and (NH4)2HPO4 are taken as the raw materials, the standing time of the solution is controlled, the pH is adjusted by ammonia liquor, a chemical precipitation method is adopted to obtain an amorphous tricalcium phosphate precursor, the amorphous tricalcium phosphate precursor is dried by a special mode, then the precursor is calcined for 2 to 4 hours at a constant temperature of 600 to 650 DEG C, and finally the precursor is cooled in the furnace to obtain the alpha-tricalcium phosphate. The technology is simple, the energy consumption is little, and the cost is low. The detection on the curing performance of alpha-tricalcium phosphate and mechanical properties after curing shows that the performance of prepared alpha-tricalcium phosphate is better than that of alpha-tricalcium phosphate prepared by a conventional technology.

Description

technical field [0001] The invention relates to the technical field of bone cement biological material and its preparation, in particular to a method for preparing α-tricalcium phosphate by low-temperature calcination. Background technique [0002] With the development of material science, bioceramic materials have become an important part of today's biomedical engineering because of their special functions of repairing, replacing and regenerating body tissues. Phosphate bone cement (CPC) has good biocompatibility and bioactivity, mild reaction after implantation into the human body, basically no heat release, and can be freely shaped according to the defect site during the operation. extensive attention of researchers from all over the world. People have successively developed a series of calcium phosphate bone cement products to meet the needs of different parts of human hard tissue repair. [0003] Calcium phosphate commonly used in the field of biomaterials mainly has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/32B82Y30/00
CPCB82Y30/00C01B25/32C01P2002/72C01P2004/03C01P2004/62
Inventor 孙康宁王颂李爱民毕见强孙晓宁
Owner SHANDONG UNIV
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