Preparation method of cool and sunlight-reflective waterproof coating for roof and outer wall
A waterproof coating, sunlight technology, applied in the direction of reflection/signal coating, coating, sustainable manufacturing/processing, etc. The effect of emissivity, improving hiding power, and enhancing reflection ratio
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[0017] Specific embodiment 1: This embodiment is a method for preparing a cool sunlight reflective waterproof coating for roof exterior walls, which is specifically carried out according to the following steps:
[0018] 1. Weigh 16%~19% deionized water, 0.5%~0.8% dispersant, 0.5%~1.0% defoamer A, 19%~24% filler, 22%~27% nano powder, 23%~28% emulsion, 8%~10% covering polymer, 0.2%~0.7% defoamer B, 0.3%~0.7% film-forming additives, 0.3%~0.6% anti-mold additives, 0.5%~0.8 %PH adjuster and remaining thickener premix;
[0019] 2. Add the deionized water and dispersant weighed in step 1 to the high-shear mixing and dispersing machine, control the linear speed to be 3.5m / s~5.0m / s, and stir, then add defoamer A and stir until Defoamer A is completely dissolved, add filler, adjust the linear speed of stirring to 20-25m / s, pH 7.8-8.2, stir for 15-25min, add nano powder, control the linear speed of stirring to 20-25m / s, and disperse Until the fineness of the slurry reaches 10-30μm, then adj...
Example Embodiment
[0021] Specific embodiment two: this embodiment is different from specific embodiment one in that the deionized water in step one meets the third-level water standard specified in GB / T6682-2008. Others are the same as the first embodiment.
Example Embodiment
[0022] Specific embodiment three: This embodiment is different from specific embodiment one or two in that: in step one, the dispersant is Rohm and Haas Orotan™ 1850E. Others are the same as the first or second embodiment.
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