Formula: Color powder coating

"Color powder coating formulation (for reference only): formulation 1, polyvinyl acetate emulsion 20% 2 BA-154 emulsion 73 water 364 light calcium carbonate 1.2% 5 calcium triphosphate 1 2% 6 bentonite 1-1.27 magnesium oxide 0.1-1% 8 kaolin 2-3.5% barium metaborate 1-3% 10 preservative 0.1% 11 compound defoamer 0.6% 12 ammonia water 13 pigment the formulation of the preparation method (1) base material Take 1 / 5 of the water and add it into the reactor, start mixing, and control the rotating speed at 30-40 rpm If 2 / 3 of the defoamer is used, add the preservative, and mix for 10min Then if the color paste, BA-154 emulsion, polyvinyl acetate emulsion, stir 30min can be agitated and replaced (2) Slurry In the other mixing tank, if the rest of the water is stirred first, start the mixing, rotate at 300 rpm, add sodium tripolyphosphate, barium metaborate, the remaining defoamer and magnesium oxide in turn, and mix for 10min Then add bentonite, mix for 30min, then add kaolin, and mix for 10min Finally, if the filler is calcium carbonate, mix for about 30 minutes before discharging The slurry is put into the colloid mill and grinded circularly for 25-30min before discharging (3) The slurry is added to the base material and stirred at 150 rpm for 30min Add ammonia to adjust the pH value to 8.2-8.3 Continue mixing for 40min, then discharge, filter and poke It shows that the coating is sprayed on the surface of the base material in the form of convex spots to form a pattern with three-dimensional decorative effect The coverage of spots to substrate or surface is 60% - 80% (1) During spraying, the coating is not atomized and can be ejected in blocks (2) The sprayed blocky coating base material surface is not broken and can be attached to the base material surface (3) the spots shall have certain fluidity Before drying, the spots shall be smoothed gradually under the action of surface tension to form curved spots, and the phenomenon of sagging shall be applied in the process of coating The color microbead spray coating is popular in the building materials market and the building decoration market Its decorative style is novel, colorful and three-dimensional It is widely welcomed This research method uses polyvinyl acetate emulsion as film forming agent, and develops a versatile and versatile microsphere spray coating with low cost, moderate price and excellent performance.