Aqueous silicon dioxide-fluorinated acrylate polyurethane ultraviolet-curing coating, preparation method and application thereof
A technology of fluorinated acrylate and water-based silica, which is applied in the field of water-based silica-fluorinated acrylate polyurethane UV-curable coating and its preparation, can solve the thermal stability, water resistance and corrosion resistance of hybrid materials No research has been done to achieve the effect of excellent mechanical properties, small surface tension and fast curing rate
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[0043] Example 1
[0044] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of ethyl orthosilicate (TEOS) at room temperature and stir evenly, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and adjust the temperature The temperature was raised to 70°C and reacted for 3 hours. After the sol was cooled, 23.8351g of N,N-dimethylformamide (DMF) was added, and the stirring was continued for 30 minutes to obtain TEOS sol.
[0045] Add 12.03g of polyether polyol (NJ-330), 0.8864g of dimethylolpropionic acid (DMPA) and 15g of polyether polyol (NJ-330) into a 500mL four-necked flask equipped with a stirrer, reflux condenser, thermometer and feeding device. N-methylpyrrolidone (NMP) solvent, heat the system to 60℃, add 5.55g isophorone diisocyanate (IPDI), add 0.05g catalyst dibutyltin dilaurate (T-12) dropwise, stir for 30min After that, the temperature of the system was increased to 70°C, and the reactio...
Example Embodiment
[0046] Example 2
[0047] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of ethyl orthosilicate (TEOS) at room temperature and stir evenly, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and adjust the temperature The temperature was raised to 70°C and reacted for 3 hours. After the sol was cooled, 23.8351g of N,N-dimethylformamide (DMF) was added, and the stirring was continued for 30 minutes to obtain TEOS sol.
[0048] Add 9.975g of polyether polyol (NJ-330), 0.9907g of dimethylolpropionic acid (DMPA) and 15g of dimethylolpropionic acid (DMPA) into a 500mL four-necked flask equipped with a stirrer, reflux condenser, thermometer and feeding device. N-methylpyrrolidone (NMP) solvent, heat the system to 60℃, add 5.55g isophorone diisocyanate (IPDI), add 0.05g catalyst dibutyltin dilaurate (T-12) dropwise, stir for 30min After that, the temperature of the system was increased to 70°C, and after...
Example Embodiment
[0049] Example 3
[0050] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of ethyl orthosilicate (TEOS) at room temperature and stir evenly, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and adjust the temperature The temperature was raised to 70°C and reacted for 3 hours. After the sol was cooled, 23.8351g of N,N-dimethylformamide (DMF) was added and stirred for 30 minutes to obtain TEOS sol.
[0051] Add 9.975g of polyether polyol (NJ-330), 0.9907g of dimethylolpropionic acid (DMPA) and 15g of dimethylolpropionic acid (DMPA) into a 500mL four-necked flask equipped with a stirrer, reflux condenser, thermometer and feeding device. N-methylpyrrolidone (NMP) solvent, heat the system to 60℃, add 5.55g isophorone diisocyanate (IPDI), add 0.05g catalyst dibutyltin dilaurate (T-12) dropwise, stir for 30min After that, the temperature of the system was increased to 70°C, and after the reaction was co...
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