Title: Polyurea spray elastomer technology-Commercial application update

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Publication: CIA

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Date: 2/13/2011

Abstract:
Several years ago, the concept of a polyurea spray elastomer technology was introduced. Since that introduction, numerous developments and presentations have boosted the market interest. The use of amine terminated polyether resins is still the basis for this technology. The polyurea spray elastomer systems require no catalyst and are extremely fast in reactivity and cure. Changes in humidity and ambient temperature have little effect on this fast, consistent reactivity. Aromatic and aliphatic polyurea spray elastomer systems are easily achieved by changes in formulation composition, and they are still 100% solids. These spray systems have excellent mechanical properties and extended durability when subjected to extreme environmental conditions. Coating applications show excellent adhesion to a variety of substrates, including sand blasted or primed steel, aluminium and concrete. Polyurea spray coated steel panels exhibit good corrosion resistance when subjected to salt fog exposure and salt water immersion at elevated temperatures. Variable moisture permeability rates in the elastomer system can also be obtained while the excellent performance characteristics. Recent studies and developments have shown that polyurea spray elastomer systems can be applied at much lower processing pressures. This allows for thinner film applications as well as broader processing equipment use.