The function of wetting agents

The wetting leveling agent can effectively reduce the surface tension of the system and significantly improve the application effect of water-based wood paint. After adding a wetting leveling agent, the wetting performance and permeability of the paint on the substrate increase, and the leveling performance of the paint liquid is improved. Sometimes, it can also overcome the problem of edge shrinkage (mirror frame effect). More importantly, leveling agents can solve common shrinkage problems, especially those caused by excessive use of defoamers. Excessive leveling agent can counteract the defoaming effect of defoaming agent, causing bubbles to appear in the paint during construction, and some may also have a significant stabilizing effect. Therefore, it is advisable to choose wetting leveling agents with good leveling properties, low foaming properties, and low foam stability. The combination of leveling agents and defoamers, including the selection of varieties and the control of dosage, is the focus of research on water-based wood paint formulations.