Method for preparing antibacterial active titanium oxide nanotube array composite coating material
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A technology of titanium oxide nanotubes and composite coatings, applied in coatings, electrolytic coatings, surface reaction electrolytic coatings, etc., can solve the problems of no antibacterial properties and limited applications, and achieve growth and nutrient transfer, The effect of reducing differences
Inactive Publication Date: 2013-05-22
INNER MONGOLIA METAL MATERIAL RES INST
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[0004] Although these methods effectively activate the surface of the titanium alloy and make it biologically active, because it does not yet have antibacter...
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Embodiment 1
[0022] A preparation of an antibacterial and active titanium oxide nanotube array composite coating material, the specific steps are as follows:
[0023] (1) Preparation of active titanium oxide nanotube array: use pure titanium as the substrate, the surface is polished with metallographic sandpaper, cleaned, and dried as the anode, and the spectroscopically pure graphite sheet is used as the cathode, with 5g / LNa 2 HPO 4 The 0.5wt% HF solution is used as the electrolyte, which is taken out after anodizing at 20V for 20 minutes, dried and kept at 500°C for 1 hour, and cooled with the furnace;
[0024] (2), AgNO 3 Preparation of soaking solution: Weigh polyethylene glycol, potassium nitrate and silver nitrate at one time and dissolve them in distilled water to prepare a solution containing AgNO 3 0.1 mol·L -1 , containing polyethylene glycol 11.8 g L -1 , containing potassium nitrate 10g L -1 mixed solution;
[0025] (3), Soaking: Soaking with AgNO at 25°C 3 0.1 mol·L -...
Embodiment 2
[0029] A preparation of an antibacterial and active titanium oxide nanotube array composite coating material, the specific steps are as follows:
[0030] (1) Preparation of active titanium oxide nanotube array: use titanium alloy Ti6Al4V as the substrate, the surface is polished, cleaned and dried by metallographic sandpaper as the anode, and the spectroscopically pure graphite sheet is used as the cathode, with a concentration of 10g / LNa 2 HPO 4 The 0.5wt% HF solution is used as the electrolyte, which is taken out after anodizing at 20V for 40min, dried and kept at 500°C for 2 hours, and cooled with the furnace.
[0031] (2), AgNO 3 Preparation of soaking solution: Weigh polyethylene glycol, potassium nitrate and silver nitrate at one time and dissolve them in distilled water to prepare a solution containing AgNO30.1 mol L -1 , containing polyethylene glycol 5.9 g L -1 , containing potassium nitrate 5g·L -1 mixed solution;
[0032] (3), Soaking: Soaking AgNO at 20°C 3 ...
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Abstract
The invention discloses a method for preparing an antibacterial active titanium oxide nanotube array composite coating material. The method comprises the following steps of: performing electrolytic oxidation to prepare a titanium oxide nanotube array with biological activity by taking titanium and an alloy thereof as an anode, taking an electrolyte solution containing phosphate anion and fluorinion as electrolyte; soaking the titanium oxide nanotube array with biological activity in the solution of silver nitrate and polyethylene glycol which are taken as a soaking solution, taking the titanium oxide nanotube array out, inducing the light in the active titanium oxide nanotube array to deposit silver particles through UV-irradiation, and obtaining the titanium oxide nanotube array composite coating material with the antibacterial property and biological activity. According to the material prepared by the method, the silver particles enter the titanium alloy or a titanium alloy matrix, and the material has long-term antibacterial stability; the thickness of the active titanium oxide nanotube array can be controlled in a range from 100 to 1000nm, and bone cell growth and nutrition transfer are promoted; the active titanium oxide generated through anodic oxidation can prevent release of titanium ion in the matrix, and the corrosion resistance of the matrix is improved; and moreover, the coating material has obvious biological activity and can induce bone apatite formation.
Description
technical field [0001] The invention relates to a preparation method of a composite coating material with antibacterial performance and biological activity, which belongs to the preparation technology of bone repair biological materials. Background technique [0002] Titanium and titanium alloys have excellent biocompatibility and mechanical properties, and are widely used in bone repair. Titanium and titanium alloys are biologically inert materials with poor biological activity and no antibacterial properties. After it is implanted into the human body, it always exists as a heterogeneous body of the host, which is prone to deformation and loosening, resulting in failure of the implant. After the surface modification technology is used to endow it with biological activity, new bone can be directly deposited on the surface of titanium alloy to form osseointegration, avoiding the formation of fibrous knot tissue, which prevents it from forming a chemical combination with the ...
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