A kind of preparation method of ferroferric oxide/titanium dioxide magnetic bioactive coating
A technology of ferroferric oxide and titanium dioxide, which is applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., can solve problems such as implant failure, weak tissue bonding, and insufficient biological activity, so as to promote new bone formation, Good biological activity, the effect of promoting fracture healing
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[0027] A preparation method for ferroferric oxide / titanium dioxide magnetic bioactive coating, comprising the following steps:
[0028] Step 1: using solvothermal method, using ethylene glycol as solvent, 1,6-hexamethylenediamine, ferric chloride hexahydrate, and anhydrous sodium acetate as solutes, wherein the concentration of 1,6-hexamethylenediamine is 0.2–5.0 mol / L, the concentration of ferric chloride hexahydrate is 0.05-2.0mol / L, the concentration of anhydrous sodium acetate is 0.01-0.5mol / L, the reaction is carried out in a high temperature and high pressure reactor, the reaction temperature is 180-220°C, the time 2-24h, after the reaction is completed, water-soluble aminated ferric oxide nanoparticles with a particle size of 20-300nm are obtained;
[0029] Step 2: Using micro-arc oxidation method, water is used as solvent, and water-soluble aminated ferric oxide nanoparticles, calcium salt, phosphorus salt and weak acid are used as solute to form an electrolyte, and wa...
Embodiment 1
[0032] Step 1: Prepare 180mL of a solution with 1,6-hexanediamine, ferric chloride hexahydrate, anhydrous sodium acetate as the solute and ethylene glycol as the solvent, wherein the concentration of 1,6-hexanediamine is 1.4mol / L, the concentration of ferric chloride hexahydrate is 0.1mol / L, and the concentration of anhydrous sodium acetate is 0.06mol / L, then transfer the above solution into a 250mL high-temperature and high-pressure reactor, and keep it warm for 6 hours at 198°C to prepare Water-soluble aminated ferric oxide nanoparticles with a size of 160nm were obtained.
[0033] The second step: in the composite solution of 0.2mol / L calcium acetate, 0.2mol / L β-sodium glycerophosphate and 0.167mol / L acetic acid, add 5.0g of the above-mentioned aminated ferric oxide nanometer Particles form an electrolyte, with titanium as the anode and stainless steel as the cathode, using a pulse power supply to conduct micro-arc plasma treatment on titanium under the conditions of volta...
Embodiment 2
[0035] Step 1: Prepare 180mL of a solution with 1,6-hexanediamine, ferric chloride hexahydrate, anhydrous sodium acetate as the solute and ethylene glycol as the solvent, wherein the concentration of 1,6-hexanediamine is 0.2mol / L 1,6-hexamethylenediamine, the concentration of ferric chloride hexahydrate is 2.0mol / L, and the concentration of anhydrous sodium acetate is 0.01mol / L. The water-soluble aminated ferric oxide nanoparticles with a size of 20 nm can be prepared by keeping the temperature for 2 hours.
[0036] Second step: in the composite solution of the calcium chloride by 0.5mol / L, the sodium phosphate of 0.5mol / L and the oxalic acid of 0.01mol / L, add the above-mentioned aminated ferric oxide nanoparticle of 0.2g that makes, An electrolyte is formed, with titanium as the anode and stainless steel as the cathode, using a pulse power supply to conduct micro-arc plasma treatment on titanium under the conditions of voltage 550V, frequency 350Hz, duty cycle 5%, and distan...
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