Central Federal Polyurethane Defoamer Solves The Problem Of Foaming For You

Polyurethane coatings are currently widely used in floor coatings, wood lacquers, anticorrosive coatings, automotive refinish coatings and wood coatings. They are a type of coating with great potential for development. Because it is in the production process, complex processes and the addition of certain substances to stir, it often causes foam, which brings great trouble to the manufacturer. At this time, the only solution is to add polyurethane defoamer.

The production of polyurethane coating foam is usually the following two cases:

1. In the actual production of polyurethane coatings, it is formed by a variety of materials with different surface tensions, most of which are prepared by floating liquid polymerization. After mechanical shaking and stirring, this causes foaming conditions during the synthesis process. In the middle, since the surface tension of the system can be lowered by the addition of the surfactant, foaming is more likely to occur.

1. There is a gap in the coated substrate during the construction process. When coating on the voided substrate, the air in the gap overflows from the inside of the coating film. If the bubble rises below the surface, it remains in the coating film. Fisheyes are formed; if they rise to the surface, shrinkage cavities and pinholes are formed, which is often the case when painting on wood or cement substrates.

Application of polyurethane defoamer in floor paint

The Zilibon polyurethane antifoaming agent has a surface tension lower than that of the original bubble film, and the film wall of the bubble film containing the antifoaming agent portion is gradually thinned, and is strongly pulled by the surrounding surface tension and the large film layer, which causes the foam to be foamed. The surface tension changes abruptly, resulting in cracking of the bubbles. You can also maintain the defoaming and antifoam effect in production for a long time.

Above the bubble problem based on customer practice, if you encounter foam problems or defoamer requirements in production, please click on the consultation window on the right to consult, or call the national free consultation hotline: +86 13929201380.