Near-infrared quick-response precise self-repairing anticorrosive coating and preparation method thereof
A fast-response, anti-corrosion coating technology, used in anti-corrosion coatings, coatings, polyurea/polyurethane coatings, etc., can solve problems such as loss of repair effect, and achieve the effect of simple construction, overcoming self-repair times, and low cost
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Embodiment 1
[0027] A method for preparing a near-infrared rapid response and precise self-repairing anti-corrosion coating, comprising the following steps:
[0028] 1. Preparation method of furan-modified nanoparticles
[0029] Take by weighing 10g particle diameter and be 50nm CeO Nanoparticles are dispersed in 500mL molar mass concentration and be 10mM, pH is in the Tris-HCl buffer solution of 8.5, add 5g dopamine hydrochloride again, after stirring at high speed for 12 hours, centrifuge to separate out the nanoparticles, Disperse evenly with ethanol.
[0030] Place 15 g of the above-mentioned homogeneously dispersed dopamine-coated nanoparticle ethanol dispersion at 60 ° C, adjust the pH to 9 with triethylamine, add 20 g of furfuryl mercaptan dropwise, continue stirring for 24 hours, and centrifuge to separate the nanoparticles. Disperse evenly with butanone.
[0031] 2. Synthetic method of maleimide-terminated polyurethane
[0032] React 20.25g of isophorone diisocyanate and 24.75g...
Embodiment 2
[0036] A method for preparing a near-infrared rapid response and precise self-repairing anti-corrosion coating, comprising the following steps:
[0037] 1. Preparation of furan-modified nanoparticles
[0038] Take by weighing 10g particle diameter and be 50nm CeO Nanoparticles are dispersed in 500mL molar mass concentration and be 10mM, pH is in the Tris-HCl buffer solution of 8.5, add 5g dopamine hydrochloride again, after stirring at high speed for 12 hours, centrifuge to separate out the nanoparticles, Disperse evenly with ethanol.
[0039] Put 15g of the above uniformly dispersed dopamine-coated nanoparticles ethanol dispersion at 60°C, adjust the pH to 9 with triethylamine, add 20g of furfuryl mercaptan dropwise, continue stirring for 24 hours, and centrifuge to separate the nanoparticles. Disperse evenly with butanone.
[0040] 2. Synthetic method of maleimide-terminated polyurethane
[0041] React 20.25g of isophorone diisocyanate and 24.75g of polypropylene glycol a...
Embodiment 3
[0045] A method for preparing a near-infrared rapid response and precise self-repairing anti-corrosion coating, comprising the following steps:
[0046] 1. Preparation of furan-modified nanoparticles
[0047]Take by weighing 10g particle diameter and be 50nm CeO Nanoparticles are dispersed in 500mL molar mass concentration and be 10mM, pH is in the Tris-HCl buffer solution of 8.5, add 5g dopamine hydrochloride again, after stirring at high speed for 12 hours, centrifuge to separate out the nanoparticles, Disperse evenly with ethanol.
[0048] Place 15 g of the above-mentioned homogeneously dispersed dopamine-coated nanoparticle ethanol dispersion at 60 ° C, adjust the pH to 9 with triethylamine, add 20 g of furfuryl mercaptan dropwise, continue stirring for 24 hours, and centrifuge to separate the nanoparticles. Disperse evenly with butanone.
[0049] 2. Synthetic method of maleimide-terminated polyurethane
[0050] React 20.25g of isophorone diisocyanate and 24.75g of poly...
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