Die-printing and covering water-based UV-curable coating and preparation method
A technology of curing coatings and ultraviolet light, applied in the field of coatings, can solve the problems of water-based light-curing coatings such as low hardness, poor wear resistance, and poor coverage of material mold printing
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[0033] The preparation method of the above-mentioned mold printing covering water-based UV-curable coating comprises the following steps:
[0034] S1. Add the silicone-modified urethane acrylate oligomer UV-curable emulsion in the component into the dispersion container;
[0035] S2. Stir at 600-800 rpm, add substrate wetting agent, organic amine regulator, dispersant, wear-resistant powder, matting powder, and defoamer in sequence;
[0036] S3. Disperse at 1200-1500 rpm for 20-30 minutes until the fineness of the slurry is less than 10 μm; so that the final paint film can reach the required fineness, and the fineness of the slurry is less than 10 μm, indicating that the powder has been fully dispersed;
[0037] S4. Add water-based polyurethane resin, water-based covering resin, thickener, leveling agent, anti-settling agent, heat to pre-dissolve photoinitiator and co-solvent, add after cooling to below 40°C, stir and mix at 800-1000 rpm Uniform, 250-350-mesh filter packaging...
Embodiment 1
[0040] Weigh the following raw materials in parts by weight: 25 parts of silicone-modified urethane acrylate oligomer UV-curable emulsion, 0.4 parts of modified polyether siloxane copolymer (substrate wetting agent 1), acetylene glycol surface Active agent (substrate wetting agent 2) 1.0 parts, dimethylethanolamine 0.1 parts, high molecular weight block copolymer solution 0.7 parts, high-purity quartz powder 12 parts, fumed silica 3.5 parts, polyether siloxane copolymer 0.1 parts of antifoaming agent, 30 parts of water-based UV curing aliphatic polyurethane resin, 40 parts of water-based UV curing polyurethane dispersion, Hemings PUR42 (thickener 1) 0.3 parts, Hemings NUVIS FX 1010 (thickener 2) 0.5 parts, polyether siloxane copolymer leveling agent 0.5 parts, polyamide wax amine salt 0.3 parts, benzoylformic acid 3 parts of methyl ester, 1.5 parts of DPM (alcohol ether solvent 1), 1.5 parts of DPNB (alcohol ether solvent 2).
[0041] Add the silicone-modified urethane acryl...
Embodiment 2
[0043] Weigh the following raw materials in parts by weight: 30 parts of silicone-modified polyurethane acrylate oligomer UV-curable emulsion, 0.3 parts of modified polyether siloxane copolymer, 0.8 parts of acetylenic glycol surfactant, triethylamine 0.15 parts, 0.5 parts of copolymer dispersant containing pigment affinity group, 10 parts of high-purity quartz powder, 4 parts of polyethylene wax powder, 0.1 part of polydimethylsiloxane defoamer, water-based UV curable aliphatic polyurethane 20 parts of resin, 35 parts of water-based UV curable polyurethane dispersion, Hemings 0.4 parts of PUR42 (thickener one), 0.3 parts of Hemings NUVIS FX 1010 (thickener two), 0.7 parts of ethoxy polydimethylsiloxane leveling agent, 0.4 parts of modified urea solution, hydroxyl ring 3.5 parts of hexyl phenyl ketone, 2 parts of DPM (alcohol ether solvent 1), 2 parts of DPNB (alcohol ether solvent 2).
[0044] Add the silicone-modified urethane acrylate oligomer UV-curable emulsion in the a...
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