A kind of antibacterial stainless steel and preparation method thereof
An antibacterial stainless steel and stainless steel technology, applied in the direction of metal material coating process, etc., can solve the problems of antibacterial film preparation process defects, difficult to achieve nano-size effect, uncontrollable film surface structure, etc., to achieve uniform and firm adhesion, short preparation period, The effect of less investment in equipment
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Embodiment 1
[0029] An antibacterial stainless steel and a preparation method thereof. Under the condition of -5~10℃, deposit the pretreated stainless steel in the dopamine buffer solution for 0.1~3h, then deposit in the solution containing titanium ions for 0.1~1h, and then deposit in the solution containing silver ions 0.1 ~ 1h, that is, get antibacterial stainless steel.
[0030] The concentration of the titanium ion-containing solution is 0.001-0.005 mol / L, and the pH value is 6-8.
[0031] The concentration of the silver ion-containing solution is 0.001-0.005 mol / L, and the pH value is 6-8.
[0032] The titanium ion-containing solution is ammonium fluotitanate solution; the silver ion-containing solution is silver nitrate solution.
Embodiment 2
[0034] An antibacterial stainless steel and a preparation method thereof. Under the condition of 10-25°C, deposit the pretreated stainless steel in a dopamine buffer solution for 3-12 hours, then deposit it in a solution containing titanium ions for 1-3 hours, and then deposit it in a solution containing silver ions for 1 ~ 3h, that is antibacterial stainless steel.
[0035] The concentration of the titanium ion-containing solution is 0.005-0.05 mol / L, and the pH value is 4-6.
[0036] The concentration of the silver ion-containing solution is 0.005-0.05 mol / L, and the pH value is 4-6.
[0037] The titanium ion-containing solution is a titanium sulfate solution; the silver ion-containing solution is a silver sulfate solution.
Embodiment 3
[0039] An antibacterial stainless steel and a preparation method thereof. Under the condition of 15-30℃, the surface pretreated stainless steel is deposited in dopamine buffer solution for 12-36 hours, then deposited in solution containing titanium ions for 3-5 hours, and then deposited in solution containing silver ions for 3 hours ~5h, the antibacterial stainless steel can be obtained.
[0040] The concentration of the titanium ion-containing solution is 0.05-0.5 mol / L, and the pH value is 3-5.
[0041] The concentration of the silver ion-containing solution is 0.05-0.5 mol / L, and the pH value is 3-5.
[0042] The titanium ion-containing solution is titanium tetrachloride solution; the silver ion-containing solution is silver chloride solution.
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