Talking about-Improvement of floating color and blooming of water-based epoxy floor and selection of dispersant

In recent years, the national environmental protection policy has become increasingly strict, and the regulations have been gradually improved: the new national standard "GB/T22374-2018 floor coating materials" was officially implemented in May 2019; In the future, floor coatings are bound to accelerate the development of solvent-free and water-based systems. Because of the particularity of the system, the choice of additives is often more complex than other systems

. Floating color problems are also common.
the main characteristics of the water-based epoxy floor:
1) the general use of curing agents as the main formula, the system
pH is generally in the range of 10-11;
Because of its high PH,
requirements for dispersants and slurry are relatively high:
1) dispersants recommend the use of cation-type or non-ionic high molecular weight wetting dispersants;
2) pigments need to choose neutral or alkaline surface treatment
3) color paste to choose high-performance resin-free slurry.
from the dispersant point of view, choose the appropriate dispersant for the base paint (white and filler), make their own resin-free slurry, generally can avoid floating hair flowers. However, due to the different performance of curing agents in various manufacturers, the selection of epoxy parts are also different, each system applicable to dispersants and floating hair flowers will be different degrees of improvement. Here are two examples for reference: case
1: Water-based epoxy self-leveling system
dispersor selection
pigment content: 69%,
dispersant addition: 2% SOP, USE DISPERBYK-194 N resin-free black slurry
construction method: 3mm knife scraping, film thickness of about 1mm
Note: the smaller the color difference, the better, the standard of general industrial paint is e. 0.5
Case 2: Water-based epoxy thin coating system
disperdissor selection
pigment content: 40%
dispersant addition: 2% SOP, using DISPERBYK-199 resin-free black slurry
Construction method: Roll coating
Note: storage conditions, two months at room temperature
ANTE-TERRA-250 is a particularly suitable dispersant for water-like epoxyamine ingredients, especially with titanium white and filler dispersion. Its versatility is good, can reduce the viscosity of the system, control floating hair flowers. And because of its own controlled flocculation molecular structure, it also has some help to prevent sinking.
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