Water-based middle coating high in stone-chip resistance, preparation method and application
A technology with high stone resistance and performance, applied in coatings, polyester coatings, polyurea/polyurethane coatings, etc., can solve the problems of reduced VOC emissions, unqualified stone resistance performance, poor mechanical properties, etc. Efficiency improvement, guaranteed stone chip resistance, gloss reduction effect
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Embodiment 1
[0058] The reagents and consumption used in embodiment are as shown in table 1:
[0059] Table 1
[0060]
[0061]
[0062] Step 1: Sanding
[0063] Take a water-based special container, and confirm the shrinkage cavity test result after cleaning. After the shrinkage cavity is qualified, add oil-free saturated polyester, solvent diethylene glycol butyl ether, and a DMEA solution with a pH regulator concentration of 10% according to the parts by weight in Table 1. ;
[0064] Start stirring to 400RPM, after stirring for 5 minutes, add pure water (ED grade), DISPERBYK-180 wetting and dispersing agent and TEGO Dispers 655, co-solvent PRIMEPOL PX-1000, dispersion stabilizer, mixed etherified melamine resin while stirring , the feeding interval between each material is 5 minutes, after the feeding is completed, stir at a speed of 600-800RPM for 15 minutes;
[0065] Stir at a speed of 600-800RPM, continue to add anti-cratering agent GK-19, fumed silica, carbon black, titaniu...
Embodiment 2
[0083] The reagents and consumption used in embodiment are as shown in table 2:
[0084] Table 2
[0085]
[0086]
[0087]
[0088] Step 1: Sanding
[0089] Take a water-based special container, confirm the shrinkage cavity test result after cleaning, and add oil-free saturated polyester, solvent diethylene glycol butyl ether, and a DMEA solution with a pH regulator concentration of 10% according to the parts by weight in Table 2 after the shrinkage cavity is qualified. ;
[0090] Start stirring to 400RPM. After stirring for 5 minutes, add pure water (ED grade), DISPERBYK-192 wetting and dispersing agent and BORCHI GEN1252, co-solvent PRIMEPOL PX-1000, dispersion stabilizer, mixed etherified melamine resin while stirring, The feeding interval between each material is 5 minutes. After the feeding is completed, stir at a speed of 600-800 RPM for 15 minutes;
[0091] Stir at a speed of 600-800RPM, continue to add anti-cratering agent GK-19, fumed silica, carbon black...
Embodiment 3
[0109] The reagents and consumption used in embodiment are as shown in table 3:
[0110] table 3
[0111]
[0112]
[0113] Step 1: Sanding
[0114]Get the water-based special container, confirm the shrinkage cavity test result after cleaning, and add oil-free saturated polyester, solvent ethylene glycol butyl ether, and a DMEA solution with a pH regulator concentration of 10% according to the parts by weight in Table 3 after the shrinkage cavity is qualified;
[0115] Start stirring to 400RPM, after stirring for 5 minutes, add pure water (ED grade), DISPERBYK-190 wetting and dispersing agent and TEGO WET 280, co-solvent PRIMEPOL PX-1000, dispersion stabilizer, mixed etherified melamine resin while stirring , the feeding interval between each material is 5 minutes, after the feeding is completed, stir at a speed of 600-800RPM for 15 minutes;
[0116] Stir at a speed of 600-800RPM, continue to add anti-cratering agent GK-19, fumed silica, carbon black, titanium dioxide,...
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