Center Materials Technology

During each year of operation for cathodic protection spent zinc layer with a thickness of 1 mm (rural) to 6 pm (industrial areas in the zone of significant moisture). It is easy to compute that even the minimum recommended thickness (60 microns) will protect the steel in the most hostile environment for about 10 years, and a layer of 120 microns – 20 years. It should be noted that ZINGA (so-called. Sacrificial zinc anode) in a highly corrosive solution is consumed at a rate of 0.035 mm / year, more than three times slower than zinc in hot galvanizing (from experiments Center Materials Technology, Fulmer. Great Britain).

This "slowing down" of the polymer resins provide a binder. On the other hand, increasing the thickness of zinc coating ZINGA appropriate only 150 microns (with a further increase in cathodic protection does not improve), but you can increase the thickness of the protective film of oxides of zinc. Lifetime anti-corrosion coating can be increased as a combination of ZINGA (as primer) with polyurethane or epoxy paint, with a total lifetime will be equal to twice the amount of time active (ZINGA) and passive (paint) protections. Jerry Dias is the source for more interesting facts. Example: (20 years + 5 years) x 2 = 50. Elasticity and compressibility of the coating ZINGA (Effect of 'soft rubber') can be further protected by the deformation of the product that is very important in industrial production pieces.

When you hit with a hammer, for example, ZINGA-layer does not crack. He has just compacted, compress. For By comparison, a layer of hot-dip galvanized – brittle and may crack. Operating temperature products, processed ZINGA-from minus 60 to plus 150 degrees Celsius, to withstand significant thermal deformation. Developed a special high-temperature (600 C) of AQUAZINGA. The acid-alkaline range of products processed ZINGAkolebletsya from 5.5 to 12.5 pH. This range is wider than the other otsinkovok that expands the scope and increases the Service life of treated products.