Ion co-doped beta-dicalcium silicate powder as well as preparation method and application thereof

A technology of dicalcium silicate and co-doping, which is applied in the direction of silicate, alkaline earth metal silicate, chemical instruments and methods, etc., can solve the problems of long synthesis time, expensive raw materials, high reaction temperature, etc., and achieve good slowness release ability, no environmental pollution, and low synthesis temperature

Pending Publication Date: 2020-11-27
SUZHOU DINGAN ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the sol-gel method has a lower synthesis temperature, smaller particle size and better uniformity, but its chemical process is more complicated, the raw materials are expensive, and the organic solvent used contains certain toxicity, which poses a greater safety hazard in the production process.
In the industrial production process, the sol-gel method needs to consume a lot of energy due to the need to dry the moisture in the sol during the process, resulting in high costs; while the traditional solid-phase synthesis method has a high reaction temperature (generally not lower than 1400 °C ), the synthesis time is long, and an additional stabilizer needs to be added to stabilize β-dicalcium silicate. This meth

Method used

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  • Ion co-doped beta-dicalcium silicate powder as well as preparation method and application thereof
  • Ion co-doped beta-dicalcium silicate powder as well as preparation method and application thereof
  • Ion co-doped beta-dicalcium silicate powder as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] β-Ca 1.7 (Sr 0.1 mn 0.1 Zn 0.1 ) SiO 4 Granular powder

[0042] The first step: weigh 2.362 grams of Ca (NO 3 ) 2 4H 2 O was dissolved in 100mL deionized water to prepare a calcium nitrate solution, 1.5mL concentrated ammonia water was added dropwise to the calcium nitrate solution, and then heated and stirred in a water bath at 70°C for 30min to obtain a calcium nitrate solution with a pH of 9; weigh 2.842g of Na 2 SiO 3 9H 2 O was dissolved in 100mL deionized water to obtain a sodium silicate solution, and the prepared sodium silicate solution was added dropwise to the calcium nitrate solution at a rate of 100mL / h, and mixed and stirred for 5 hours to obtain the first mixed solution; the first mixed solution was obtained by suction filtration The precipitate was obtained from the solution, and the precipitate was washed with deionized water, and then dried in a vacuum oven at 80°C for 8 hours to obtain a precursor powder; the precursor powder was calcined in ...

Embodiment 2

[0049] β-Ca 1.7 (Eu 0.1 Sr 0.2 ) SiO 4 Granular powder

[0050] The first step: weigh 2.362 grams of Ca (NO 3 ) 2 4H 2 Dissolve O in 100mL deionized water to prepare a calcium nitrate solution, add 1.5mL concentrated ammonia water dropwise, heat and stir in a water bath at 70°C for 30min to obtain a calcium nitrate solution with a pH of 7-8. Weigh 2.842 g Na 2 SiO 3 9H 2 O was dissolved in 100mL deionized water, and the prepared sodium silicate solution was added dropwise to the calcium nitrate solution at a rate of 100mL / h, mixed and stirred for 5h to obtain the first mixed solution; Get a precipitate from a mixed solution, wash the precipitate with deionized water, and then dry it in a normal pressure drying oven at 80°C for 8h to obtain a precursor powder; place the precursor powder in a microwave oven at 950°C for 0.5h and heat up The speed is 300°C / min, and naturally cooled to room temperature to obtain the intermediate product nano-calcium silicate powder.

[...

Embodiment 3

[0057] β-Ca 1.6 (Na 0.1 Sr 0.1 Fe 0.2 ) SiO 4 Granular powder

[0058] The first step: weigh 2.362 grams of Ca (NO 3 ) 2 4H 2 Dissolve O in 100mL deionized water to make a solution, add 1.5mL concentrated ammonia water dropwise, adjust the pH of the calcium nitrate aqueous solution to 8-9, heat and stir in a water bath at 70°C for 30min. Weigh 2.842 g Na 2 SiO 3 9H 2 O was dissolved in 100mL deionized water, and the prepared sodium silicate solution was added dropwise to the calcium nitrate solution at a rate of 50mL / h, heated and stirred in a water bath at 50°C for 8 hours to obtain the first mixed solution; centrifuge the first mixed solution The precipitate was obtained, washed with deionized water, placed in a freeze-drying oven, and dried for 12 hours through the steps of pre-freezing, sublimation, and desorption to obtain a precursor powder; the precursor powder was calcined in an infrared radiation furnace at 800°C 3h, the heating rate is 2000°C / min, and natu...

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Abstract

The invention discloses ion co-doped beta-dicalcium silicate powder, a preparation method and an application. The composition general formula of the ion co-doped beta-dicalcium silicate powder is Ca<2-x>M<x>(SiO4)<1-y>(BO3)<y>, M ions are one or more metal cations capable of replacing Ca<2+> ions, x is greater than 0 and less than or equal to 1, the borate ions BO3<3-> are anions capable of partially substituting SiO4<4-> ions, and y is more than or equal to 0 and less than or equal to 0.05. The ion co-doped beta-dicalcium silicate powder provided by the invention can realize various biological functions such as bone cell induced conduction, vascularization promotion, bacteria resistance and bacteriostasis, and can meet clinical application requirements such as dental restoration, jawbonerestoration, spine restoration, joint restoration and other hard tissue restoration. The preparation method provided by the invention has the advantages of low synthesis temperature, short synthesis time, no environmental pollution, batch production and the like.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to an ion co-doped β-dicalcium silicate powder, a preparation method and an application. Background technique [0002] Dicalcium silicate (Ca 2 SiO 4 , C2S) is one of the most important components in Portland cement clinker, in cement and refractory materials, dicalcium silicate has been widely studied and applied. There are many crystal forms of dicalcium silicate, among which, the metastable phase of β-dicalcium silicate has hydration activity, that is, hydraulicity. When β-dicalcium silicate powder is in contact with water, the surface layer of the particles is dissolved and accompanied by ion migration, and the silicate hydrate (C-S-H) gel with a nanoporous structure is deposited on the surface of the powder particles, while the calcium hydroxide crystals are on the surface of the particles. The capillary region of the hydrate gel nucleates and grows. As the rea...

Claims

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Application Information

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IPC IPC(8): C01B33/20C01B33/24A61K47/02A61L27/02A61L27/50A61L27/54A61L27/58
CPCC01B33/20C01B33/24A61L27/025A61L27/50A61L27/54A61L27/58A61K47/02C01P2002/52C01P2002/72C01P2004/03A61L2430/02A61L2430/12A61L2430/24A61L2300/406A61L2300/602A61L2300/412
Inventor 朱阳光李亚东杨志杰李亚军徐传艳
Owner SUZHOU DINGAN ELECTRONICS TECH
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