A kind of water-based acrylate polymer/nanoparticle hybrid and hydrophobic coating based thereon and preparation method
A water-based acrylate and water-based acrylic technology, applied in the direction of coating, can solve the problems of affecting coating adhesion and unclear durability of super-amphiphobic coating, achieving excellent adhesion, convenient construction, and reducing toxic and harmful Effect
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Embodiment 1
[0039]Add 10.0g of silica nanoparticles to the mixed solution of ethanol and ammonia at pH=11, then add 1.0g of heptafluorodecyltrimethoxysilane and 0.4g of vinyltrimethoxysilane to it, apply at 50℃ Ultrasonic reaction 4h. The product is filtered and dried to obtain functional hydrophobic nano silica particles.
[0040]Add 7.0g of functional hydrophobic nano-silica particles and 75mL n-butanol into a three-necked flask, sonicate for 30min to make the particles uniformly dispersed, heat up to 95℃, and then add 3.0g methyl group dropwise to it at a uniform rate within 3h under nitrogen protection Methyl acrylate, 2.0 g styrene, 6.0 g butyl acrylate, 2.0 g acrylic acid, 3.0 g 2-hydroxyethyl acrylate and 0.3 g dibenzoyl peroxide, followed by heat preservation and reaction for 3 hours to obtain a solvent-based superhydrophobic coating. Then the system was distilled under reduced pressure to remove excess n-butanol, and the temperature was reduced to 50°C by adding 3 mL of N,N-dimethylethano...
Embodiment 2
[0043]Add 7.0g of titanium dioxide nanoparticles to a mixed solution of ethanol and ammonia at pH=13, and then add 4.9g of tridecafluorooctyltriethoxysilane and 1.96g of γ-methacryloxypropyltrimethoxy silane to it Silane, stirring at 50°C for 2h. The product is filtered and dried to obtain functional hydrophobic nano titanium dioxide particles.
[0044]Add 5.0g of functional hydrophobic nano titanium dioxide particles and 50mL of tetrahydrofuran into a three-necked flask. Ultrasound for 20min to uniformly disperse the particles. The temperature is raised to 90°C. Then under nitrogen protection, 2.5g of methyl methacrylate is added dropwise at a constant rate within 3h. 1.0g styrene, 4.3g n-hexyl acrylate, 1.2g acrylic acid, 1.5g -4-hydroxybutyl acrylate and 0.2g azobisisobutyronitrile, followed by heat preservation and reaction for 3 hours to obtain a solvent-based superhydrophobic coating. Then the system was distilled under reduced pressure to remove excess tetrahydrofuran, and the t...
Embodiment 3
[0047]Add 5.0g of aluminum oxide nanoparticles to a mixed solution of ethanol and ammonia at pH=12, and then add 2.0g of dodecafluoroheptylpropyltrimethoxysilane and 0.8g of vinyltriethoxysilane to it, Stir at 50°C for 3h. The product is filtered and dried to obtain functional hydrophobic nano aluminum oxide particles.
[0048]Add 3.0 g of functional hydrophobic nano aluminum oxide particles and 40 mL of isopropanol into a three-necked flask, sonicate for 25 minutes to uniformly disperse the particles, raise the temperature to 110 ℃, and then add 1.5 g of formazan at a uniform rate within 3 hours under nitrogen protection Methyl acrylate, 0.5g styrene, 1.0g 2-ethylhexyl acrylate, 0.5g methacrylic acid, 0.5g 2-hydroxypropyl acrylate and 0.1g tert-butyl peroxyacetate, followed by insulation reaction for 3h Get a solvent-based super hydrophobic coating. Then the system was distilled under reduced pressure to remove excess isopropanol, and the temperature was reduced to 50°C and 1.0 mL of ...
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