A systematic discussion of the molecular structure, dynamic surface tension reduction mechanism, low-foam properties and applications of acetylenic diol surfactants in waterborne coatings, covering selection, dosage and formulation advice.
The right wetting agent doubles the result; the wrong one causes cratering and foaming. This article gives the addition sequence and typical dosage range of substrate wetting agents, low-foam wetting agents and leveling agents in waterborne systems.
In spray application, spreading of atomized droplets on the substrate occurs within milliseconds, and static surface tension alone cannot describe the process. This article explains the significance of dynamic surface tension and its effect on coating defects.
Acetylenic diol surfactants achieve low foam through their unique gemini molecular structure, which lowers static surface tension while exhibiting low-foam properties. This article explains the defoaming mechanism from the perspective of dynamic surface tension.
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