A kind of modified nanoparticle and its preparation method and superhydrophobic self-healing photocuring coating prepared therefrom
A light-curing coating and nano-particle technology, which is applied in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problem of disappearance of super-hydrophobic properties of coatings, high energy consumption, and easy damage to micro-nano structures and other issues to achieve the effect of broadening applications and low energy consumption
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Embodiment 1
[0040] Embodiment 1: the preparation of modified aluminum oxide nanoparticles:
[0041] Add 6 parts of dithiodiethylene glycol, 8 parts of 3-isocyanatopropyltrimethoxysilane and 0.1 part of organotin catalyst into the reactor, heat to 85°C, stir for 3 hours, and then pour into the reactor Add 35 parts of aluminum oxide nanoparticles, 10 parts of trimethoxy silicone oil, 10 parts of heptadecafluorodecyltrimethoxysilane, 8 parts of 3-(methacryloyloxy)propyltrimethoxysilane, polymerization inhibitor (MEHQ) 0.1 part and 30 parts of isopropanol, stirred and reacted at 40°C for 24 hours, centrifuged the reaction liquid at 5000 rpm for 1 hour, poured off the clear liquid, and ultrasonically dispersed the solid matter with 10 parts of isopropanol for 20 minutes. Then centrifuge at 5000 rpm for 1 hour, remove the supernatant, and dry the solid to obtain modified aluminum oxide nanoparticles SD028-1, the structural formula of which is as follows:
[0042] Its structure was characterize...
Embodiment 2
[0044] Embodiment 2: the preparation of modified titanium dioxide nanoparticles:
[0045] Add 10 parts of dithiodiethylene glycol, 12 parts of 3-isocyanatopropyl triethoxysilane and 0.3 parts of organotin catalyst into the reactor, heat to 90°C, stir for 2 hours, and then pour into the reactor Add 40 parts of titanium dioxide nanoparticles, 12 parts of trimethoxy silicone oil, 12 parts of perfluoropolyether trimethoxysilane, 10 parts of 3-(methacryloxy)propyltriethoxysilane, polymerization inhibitor (MTBHQ ) and 35 parts of isopropanol, stirred and reacted at 35°C for 24 hours, centrifuged the reaction solution at 5000 rpm for 1 hour, poured off the clear liquid, and ultrasonically dispersed the solid matter with 10 parts of isopropanol for 15 minutes. Centrifuge at rpm for 1 hour, remove the supernatant, and dry the solids to obtain modified aluminum oxide nanoparticles SD028-2. The structural formula is as follows:
[0046]
Embodiment 3
[0047] Embodiment 3: the preparation of modified zirconia nanoparticles:
[0048] Add 8 parts of dithiodiethylene glycol, 10 parts of 3-isocyanatopropyltrimethoxysilane and 0.1 part of organic bismuth catalyst into the reactor, heat to 65°C, stir for 4 hours, and then pour into the reactor Add 45 parts of zirconia nanoparticles, 15 parts of trimethoxy silicone oil, 13 parts of perfluoropolyether triethoxysilane, 10 parts of 3-(methacryloxy)propyl trimethoxysilane, polymerization inhibitor (MTBHQ) 0.1 part and 40 parts of isopropanol, stirred and reacted at 45°C for 24 hours, centrifuged the reaction solution at 5000 rpm for 1 hour, poured off the clear liquid, and ultrasonically dispersed the solid matter with 10 parts of isopropanol for 25 minutes. Then centrifuge at 5000 rpm for 1 hour, remove the supernatant, and dry the solids to obtain modified aluminum oxide nanoparticles SD028-3. The structural formula is as follows:
[0049]
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