Normal temperature cured self-assembly composite nano oxide anti-corrosive paint
A technology of anti-corrosion coatings and oxides, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of increased energy consumption, unstable film formation, poor anti-corrosion performance, etc.
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Embodiment 1
[0037] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 5 grams of 0.5% acetic acid solution, stir at room temperature for 5 hours, add 1 gram of dodecafluoroheptylpropyltrimethoxysilane, N-( β-aminoethyl)-γ-aminopropyltrimethoxysilane 1 gram, continue to stir at normal temperature for 1 hour, because these two silane coupling agents modify the surface of the corresponding nanoparticles, the nanoparticles are self-assembled. A dense coating is formed on the surface of the metal material. The simulated structure and atomic force microscope photos of the nano-anti-corrosion coating are shown in figure 1 , 2 , Nano-particles with uniform particle size self-assembled to form a dense coating. After the sample was cured at room temperature for three days, the salt spray test of the coating on aluminum alloy was up to 70 hours.
Embodiment 2
[0039] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 5 grams of 0.5% acetic acid solution, and stir for 5 hours at room temperature. Obtain nano-silica sol. Dissolve 0.6 g of acetylacetone in 10 g of alcohol, then add 2 g of n-butyl titanate, stir for 5 minutes, add 0.2 g of deionized water, and stir for 1 hour to obtain transparent and stable nano titanium dioxide particles uniformly dispersed in the solvent. After mixing the above two sols, add 3 grams of dodecafluoroheptylpropyltrimethoxysilane and 2 grams of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, and continue stirring at room temperature After 1 hour, due to the modification of the surface of the corresponding nanoparticles by the two silane coupling agents, the nanoparticles self-assemble and a dense coating is formed on the surface of the metal material. SEM photo of titanium dioxide nanoparticles image 3 . After the sample was cured at room temperature for three days, the sa...
Embodiment 3
[0041] Dissolve 10 grams of ethyl orthosilicate in 100 grams of absolute ethanol, add 3 grams of 0.5% acetic acid solution, stir at room temperature for 10 hours, add 1 gram of dodecafluoroheptylpropyltrimethoxysilane, N-( 2 grams of β-aminoethyl)-γ-aminopropyltrimethoxysilane, 1 gram of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, because these two silane coupling agents are in the corresponding The modification of the surface of the nanoparticles allows the nanoparticles to self-assemble and form a dense coating on the surface of the metal material. In order to further increase the thickness of the coating, add 2 grams of hydroxyl silicone oil. The scanning electron microscope photo of the nano anti-corrosion coating is shown in Figure 4 . After the sample was cured at room temperature for three days, the salt spray test of the coating on the magnesium alloy material lasted for 50 hours.
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