Zinc-rich paints are recognized for their excellent adhesion to new substrates as on aged substrates and for their excellent resistance to rubbing.

Given their excellent cathodic protection barrier, these materials have been used, for more than 100 years in the world, in fact the American Iron and Steel Institute and the Steel Structures Painting Council, make specific recommendations for the use of these materials, for their performance Corrosion resistance and low loss of adhesion over time. Zinc-rich Paints have similar characteristics to hot-dip galvanized (galvanized). Leaving a high percentage of zinc in the dry film, once the material has cured or reacted with the substrate (depending on the type of binder used). Therefore, in some cases they are considered galvanizing. These paints can synergistically combine the cathodic protection properties of zinc with the corrosion-inhibiting properties of epoxy paints and their adhesion qualities in the case of Zinc Rich Epoxy, our SINTECOAT EZ 119. With the use of inorganic binders, such as Ethyl Silicate, achieves greater cathodic protection and chemical adhesion between iron and zinc without forming a film, as is the case of our SINTECOAT IZ 100, obtaining a similar high friction resistance surface Galvanized Zinc-rich Paints are recommended for the repair of damaged galvanized coatings, in accordance with the guidelines of ASTM A 780, since it allows replacing part of the lost zinc and maintaining the cathodic protection of galvanizing. These paints are highly recommended, for the galvanic protection of steel for construction since, depending on the type of binder, the painted surfaces have an increase in the grip of the upper layers and they can be welded, which allows their use for work. of large metal constructions, using these materials as Primer de Taller (shop-primer), that is, for the temporary protection of steel surfaces treated with abrasive jets to eliminate calamine and generate an adequate anchoring profile for the upper layers, which is the case of our SINTECOAT IZ 104. Normally they are used as anticorrosives, but they can perfectly be used as finishing materials if one wants a metallic gray matte finish. On this type of materials both in the case of SINTECOAT EZ 119, as in the case of SINTECOAT IZ 100 and SINTECOAT IZ 104, different types of finishes can be applied, such as being Epoxy and Polyurethane, but it is not possible to apply them, commonly called Synthetic Enamels or Alkyd Paints, since these materials contain oils in their composition that react with Zinc generating soluble soaps that result in the release of the upper layers.

Publicado el 19/07/2013