Application of Defoaming Agent for Steel Frame Bridge Paint

　　The defoamer for steel frame bridge paint has the advantages of self emulsification, easy dispersion, strong versatility, good defoaming and anti foaming performance, no surface defects, and no impact on film formation. It has outstanding effect on water-based paint system, effectively controls the production of foam in the process of paint production, packaging and application, and has good compatibility with a wide range of paint systems.

　　Bubble problems often occur during the production of steel frame bridge paint. The foam of steel frame bridge paint is mainly caused by surfactant, raw materials, mixing, equipment and other reasons:

　　1. Due to the added surfactant, the formation of foam is accelerated and the foam is stable;

　　2. Chemical reaction occurs in other additives added, resulting in the production of foam;

　　3. High speed shaking or vibration during production brings gas into the system to form foam;

　　4. Improper equipment power will also cause foam.

　　Product characteristics of defoamer for steel frame bridge paint:

　　1. It can be dispersed in water and also soluble in organic solvents;

　　2. Good solubility and stability, it can quickly eliminate bubbles generated during mixing and coating processes, ensuring that the coating surface does not bubble, shrink, or show fisheyes, and is flat and smooth.

　　The use method of defoamer for steel frame bridge paint: adding the original solution or adding it in batches. Add half in the grinding stage to inhibit the production of foam; Add the other half during the paint mixing stage.

　　Defoamer for steel frame bridge paint is mainly used for: colored emulsion paint, high gloss lotion paint, adhesive, high PVC emulsion paint, ink grinding, silicate paint (fireproof paint), anti-corrosion paint, water-based wood paint, steel frame bridge paint, etc. Can be used in polyurethane systems, polyvinyl acetate, styrene/acrylic resins, or pure acrylic systems. It can also be used in coatings, water-based wood coatings, water-based epoxy resins, industrial coatings, adhesives, lubricant industries, PVC coatings, primers, penetrating primers, printing inks, etc.