Preparation method of magnesium-based anti-microbial anti-corrosion nanometer coating layer
A nano-coating and corrosion-resistant technology, applied in coatings, electrolytic coatings, electrophoretic plating, etc., can solve problems such as human damage, inapplicability to biomedical fields, and high toxicity, and achieve low cost and reliable coating formation process control and easy operation
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Embodiment 1
[0019] A method for preparing a magnesium-based antibacterial and corrosion-resistant nano-coating, the specific preparation steps are as follows:
[0020] (1) Preparation of ionic random copolymer: Weigh 3.144g (20mmol) dimethylaminoethyl methacrylate, 4.166g (20mmol) isobornyl acrylate and 0.129g (2%) 2,2- Add azobisisobutyronitrile into the round-bottomed flask in turn, add 15mL of dioxane into the flask as a solvent, pass nitrogen gas for 30min, and react the system at 65°C for 24h. After the reaction is completed, dialyze the final reaction solution in deionized water. Remove unreacted monomers, initiators, and organic solvents, and freeze-dry the dialysate to obtain ionic random copolymers. 1 The H-NMR spectrum is shown in the accompanying drawing figure 1 shown;
[0021] (2) Preparation of composite nanoparticle solution: the ionic random copolymer prepared by step (1) is dissolved in ethanol to form a 5mg / mL solution, and then dropwise add antibacterial molecules con...
Embodiment 2
[0024] A method for preparing a magnesium-based antibacterial and corrosion-resistant nano-coating, the specific preparation steps are as follows:
[0025] (1) Preparation of ionic random copolymer: weigh 1.842g (10mmol) p-vinylbenzenesulfonic acid, 4.446g (20mmol) isobornyl methacrylate and 0.098g (2%) 2,2-azo Diisobutyronitrile was added to a round bottom flask in turn, 20 mL of dioxane was added to the flask as a solvent, nitrogen gas was passed for 30 minutes, and the system was reacted at 70°C for 18 hours. After the reaction was completed, the final reaction solution was dialyzed in deionized water to remove untreated Reactive monomers, initiators, organic solvents, and dialysis fluid are freeze-dried to obtain ionic random copolymers;
[0026] (2) Preparation of composite nanoparticle solution: the ionic random copolymer prepared in step (1) is dissolved in methanol to form a 2mg / mL solution, and then dropwise add antibacterial molecules containing 3mg / mL tannic acid in...
Embodiment 3
[0029] A method for preparing a magnesium-based antibacterial and corrosion-resistant nano-coating, the specific preparation steps are as follows:
[0030] (1) Preparation of ionic random copolymer: Weigh 1.541g (10mmol) methacrylic anhydride, 2.083g (10mol) isobornyl acrylate and 0.049g (1%) 2,2-azobisisoheptanonitrile , into a round bottom flask in turn, add 10mL dioxane as a solvent into the flask, pass nitrogen gas for 30min, and react at 67°C for 12h in the system. After the reaction is completed, dialyze the final reaction solution in deionized water to remove unreacted monomers, Initiator, organic solvent, and dialysate are freeze-dried to obtain ionic random copolymer;
[0031] (2) Preparation of composite nanoparticle solution: Dissolve the ionic random copolymer prepared in step (1) in n-butanol to form a 3 mg / mL solution, and then add dropwise a solution containing 1 mg / mL tannic acid to the above solution The n-butanol solution of antibacterial molecules, the volu...
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