The tendency of roller splash during the construction of water-based building coatings was studied.

Scientists studied the effects of thickeners and volume solids on the tendency of roller splashes during the construction of water-based building coatings.
fibers form between rollers and substrates during roller coating of water-based building coatings. These fibers gradually thin and break down into small droplets, resulting in waste of paint

. This defect is widely known as splashing. In the current study, similar volumes and different volumes of solids were studied based on the type of thickener (i.e. the combination of cellulose and clay, cellulose and hydrophobic modified polyaldehyde/HMPAPE) and the tendency to splash easily in water-based building coatings with a fully provisioned medium pigment volume concentration.
HMPAPE thickener-based coating splashes at least
in solid volume, cellulose and clay thickener-based coatings splash the most, while HMPAPE-based thickeners have the least splashes. This is mainly due to the chemical properties, molecular weight and thickening of thickeners.
, based on different types of thickeners, a reliable correlation was established between observed splashes and frequency-related elastic mods outside the linear viscosity range at the same and varying solid content. This correlation helps chemists quickly screen formulations to minimize splashes during roller coating, saving time, cost and manpower.
can be found in Volume 17 (2020) of the Journal of Coating Technology and Research.
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