Heavy-anticorrosive epoxy finishing coat and preparation method thereof
An epoxy surface, heavy-duty anti-corrosion technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., to achieve excellent anti-corrosion performance, operational continuity, and reduce surface energy.
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Embodiment 1
[0049](1) Dissolve 5 parts by mass of butyl titanate and 3 parts by mass of dodecylfluoroalkyltrimethoxysilane in 5 parts by mass of xylene solution, add dropwise to 2 parts by mass of isopropanol, 5 parts by mass of In a mixed solution composed of toluene, 0.5 parts by mass of water, and 0.1 parts by mass of nitric acid, react at 25°C for 8 hours;
[0050] (2) To maintain the acidic condition of the system, add 3 parts by mass of water and 40 parts by mass of solvent, and then dropwise add 10 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethyl Oxysilane, 3 parts by mass of dodecafluoroalkyltrimethoxysilane and 10 parts by mass of dimethyldimethoxysilane mixed solution, continue to stir for 8h;
[0051] (3) Add 10 parts by mass of anhydrous sodium sulfate to remove water and filter, add a small amount of ammonia dropwise to adjust the pH of the system to 7~8, react at 50°C for 8 hours; finally add a small amount of concentrated hydrochloric acid to adjust the system to neutra...
Embodiment 2
[0057] Embodiment 2: Change the reaction conditions of (5) and (6), and the rest are the same as in Embodiment 1.
[0058] (1) Dissolve 5 parts by mass of butyl titanate and 3 parts by mass of dodecylfluoroalkyltrimethoxysilane in 5 parts by mass of xylene solution, add dropwise to 2 parts by mass of isopropanol, 5 parts by mass of In a mixed solution composed of toluene, 0.5 parts by mass of water, and 0.1 parts by mass of nitric acid, react at 25°C for 8 hours;
[0059] (2) To maintain the acidic condition of the system, add 3 parts by mass of water and 40 parts by mass of solvent, and then dropwise add 10 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethyl Oxysilane, 3 parts by mass of dodecafluoroalkyltrimethoxysilane and 10 parts by mass of dimethyldimethoxysilane mixed solution, continue to stir for 8h;
[0060] (3) Add 10 parts by mass of anhydrous sodium sulfate to remove water and filter, add a small amount of ammonia dropwise to adjust the pH of the system to 7~8, ...
Embodiment 3
[0064] Embodiment 3: change the reaction condition of (1), all the other are the same as embodiment 1.
[0065] (1) Dissolve 20 parts by mass of butyl titanate and 10 parts by mass of dodecafluoroalkyltrimethoxysilane in 20 parts by mass of xylene solution, add dropwise to 5 parts by mass of isopropanol, 10 parts by mass of In a mixed solution composed of toluene, 2 parts by mass of water, and 0.4 parts by mass of nitric acid, react at 25°C for 8 hours;
[0066] (2) To maintain the acidic condition of the system, add 3 parts by mass of water and 40 parts by mass of solvent, and then dropwise add 10 parts by mass of γ-(2,3-epoxypropoxy)propyltrimethyl Oxysilane, 3 parts by mass of dodecafluoroalkyltrimethoxysilane and 10 parts by mass of dimethyldimethoxysilane mixed solution, continue to stir for 8h;
[0067] (3) Add 10 parts by mass of anhydrous sodium sulfate to remove water and filter, add a small amount of ammonia dropwise to adjust the pH of the system to 7~8, react ...
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