Sustained-release anti-mildew/antibacterial and self-cleaning dual-functional casein-based nano-microcapsule coating material and preparation method thereof
A technology of nano-microcapsules and coating materials, applied in the direction of anti-fouling/underwater coatings, coatings, protein coatings, etc., to achieve the effects of size controllable, unique structure and characteristics, and broad application prospects
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[0025] The preparation method of the slow-release anti-mildew / antibacterial and self-cleaning dual-functional casein-based nano-microcapsule coating material that the present invention relates to comprises the following steps:
[0026] Weigh 60-100mg casein powder, add it into 10-30mL weak acid solution with a mass fraction of 1-3%, stir and dissolve at room temperature to 50°C for 12h-24h, then cool to room temperature to obtain solution A;
[0027] Weigh 3-10mg antifungal agent or antibacterial agent, 30-70mg polymer micelles, 18-54μL butyl titanate and 6-18μL coupling agent and add them to 600-800μL organic solvent at the same time, and heat at room temperature to 50℃ After stirring and dissolving for 12h-24h, cool to room temperature to obtain solution B;
[0028] At room temperature, slowly add solution B to solution A at a rate not higher than 2µL / min, and keep stirring for 24h-72h; the slow-release anti-mildew, antibacterial, self-cleaning casein-based nano-microcapsule...
Embodiment 1
[0034] Example 1: Weigh 60 mg of casein powder, add it to 10 mL of acetic acid solution with a mass fraction of 1 %, stir and dissolve at room temperature for 12 hours, then cool to room temperature to obtain solution A; weigh 3 mg of N -Octyl-4-isothiazolin-3-one, 30 mg F127, 18 μL butyl titanate and 6 μL γ-methacryloxypropyltrimethoxysilane were added to 600 μL tetrahydrofuran at the same time, and After stirring and dissolving at room temperature for 12 hours, cool to room temperature to prepare solution B; at room temperature, slowly add solution B to solution A at a rate of 2 µL / min, and continue stirring for 24 hours; the target product is obtained.
Embodiment 2
[0035] Example 2: Weigh 100mg of casein powder, add it to 30mL of 3% citric acid solution, stir and dissolve at 50°C for 24h, then cool to room temperature to obtain solution A; weigh 10mg of mercapto Add benzothiazole, 70mg F127, 54μL butyl titanate and 18μL vinyltrimethoxysilane to 800μL dichloromethane at the same time, stir and dissolve at 50°C for 24h, then cool to room temperature to prepare solution B; , slowly add solution B to solution A at a rate of 1 µL / min, and keep stirring for 72 hours; the target product is obtained.
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