Preparation method for super-hydrophobic coating
A technology of superhydrophobic coating and glycidol, which is applied in the direction of coating, etc., can solve the problems of easy aging, insufficient stability of superhydrophobic surface, and insufficient washing resistance, and achieve stable hydrophobic performance, simple and efficient preparation method, and good acid resistance. Effect
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[0034] A kind of preparation method of superhydrophobic coating of the present invention, specifically implement according to the following steps:
[0035] Step 1. Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor.
[0036] Step 2. Weighing dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA) treated in step 1 and Azobisisobutyronitrile and sodium bisulfite;
[0037] Among them, dodecafluoroheptyl methacrylate (DFMA) and glycidyl methacrylate (GMA) are used as raw materials, and azobisisobutyronitrile and sodium bisulfite are used as initiators.
[0038] Step 3. Add all the materials weighed in step 2 into the container together, then add tetrahydrofuran into the container, seal the container and pass nitrogen gas for 45min to 55min, the purpose is to discharge the oxygen in the container;
[0039] Wherein, tetrahydrofuran is a solvent, nitrogen is a protect...
Embodiment 1
[0060] Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh 10% methacrylic acid respectively according to the molar ratio of 9:1:0.06:0.1 Difluoroheptyl ester (DFMA), treated glycidyl methacrylate (GMA), and azobisisobutyronitrile and sodium bisulfite; add all weighed materials together to a round-bottomed flask, and add to the round-bottomed flask Add tetrahydrofuran to the flask, seal the round-bottomed flask and ventilate nitrogen for 45 minutes to discharge the oxygen in the round-bottomed flask; place the whole round-bottomed flask in an oil bath constant temperature pot with a temperature of 65°C and heat it under the protection of nitrogen Turn on the magnetic stirring for 35 minutes to fully react the dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA), azobisisobutyronitrile and sodium bisulfite in the round bottom flask. Pour out the reactants ...
Embodiment 2
[0067] Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh 10% methacrylic acid according to the molar ratio of 8:1:0.05:0.15. Difluoroheptyl ester (DFMA), treated glycidyl methacrylate (GMA), and azobisisobutyronitrile and sodium bisulfite; add all weighed materials together to a round-bottomed flask, and add to the round-bottomed flask Add tetrahydrofuran to the flask, seal the round-bottom flask and pass nitrogen gas for 50 minutes, and discharge the oxygen in the round-bottom flask; place the whole round-bottom flask in an oil bath constant temperature pot with a temperature of 70°C and heat it under the protection of nitrogen. Turn on the magnetic stirring for 40 minutes to fully react the dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA), azobisisobutyronitrile and sodium bisulfite in the round bottom flask. Pour out the reactants formed in the r...
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