Preparation and application of a superhydrophobic coating composition
A technology of super-hydrophobic coatings and compositions, which can be used in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., and can solve problems such as limited application fields
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Embodiment 1
[0021] Preparation of surface aminated hollow microspheres
[0022] Dissolve γ-aminopropyltrimethoxysilane in industrial ethanol first, and prepare a solution with a mass fraction of 10% for later use; respectively put aluminum oxide hollow spheres, porous silica microspheres, and polystyrene hollow spheres into diameters In a chromatographic column with a diameter of 10 cm, turn off the switch at the bottom of the chromatographic column, fill up the prepared γ-aminopropyltrimethoxysilane solution, shake for 10 minutes, release the liquid, take out the microspheres and dry them at 50°C to obtain surface amination hollow microspheres, denoted as H-1, H-2, H-3.
Embodiment 2
[0024] Synthesis of perfluoroalkyl(meth)acrylate polymers with epoxy groups
[0025] ⅠAdd 35% perfluorohexyl ethyl acrylate, 15% glycidyl methacrylate, and 50% butyl acetate into the reaction flask, blow nitrogen for 30 minutes, and add 0.5% of the total amount of materials Azobisisobutyronitrile (AIBN) was heated to 70°C, reacted for 3hrs and discharged to obtain a perfluorohexylethyl acrylate polymer with epoxy groups, which was designated as P-1.
[0026] Ⅱ Add 35% perfluorohexyl ethyl methacrylate, 15% glycidyl methacrylate, and 50% butyl acetate into the reaction flask, blow nitrogen for 30 minutes, and add the mass fraction of the total amount of materials as 0.5% azobisisobutyronitrile (AIBN), heated up to 70° C., reacted for 3 hrs and discharged to obtain a perfluorohexylethyl methacrylate polymer with epoxy groups, which was designated as P-2.
[0027] Ⅲ Add 35% perfluorooctyl ethyl acrylate, 15% glycidyl methacrylate, and 50% butyl acetate into the reaction flask, b...
Embodiment 3
[0030] Preparation of Fluorine Modified Hollow Microspheres
[0031] Ⅰ Dissolve P-1, P-2, P-3, and P-4 in 120# gasoline respectively, and prepare a solution with a mass fraction of 20% for later use; put H-1 into a chromatographic column with a diameter of 10cm , turn off the switch at the bottom of the chromatography column, fill up the prepared polymer solution, shake for 10 minutes, release the liquid, take out the microspheres and dry them to obtain fluorine-modified hollow microspheres, respectively denoted as F-1, F-2, F-3, F-4.
[0032] Ⅱ Dissolve tape P-1 in 120# gasoline and prepare a solution with a mass fraction of 20% for later use; put H-2 and H-3 into a chromatographic column with a diameter of 10 cm, and close the switch at the bottom of the chromatographic column , fill up the prepared polymer solution, shake for 10 minutes, release the liquid, take out the microspheres and dry them to obtain fluorine-modified hollow microspheres, which are respectively denote...
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