Polyurea Sealants for Control Joint Applications

Polyurea sealant technology can find its origin in slower reacting spray polyurea systems developed at Texaco Chemical Company in the late 1980s [1]. In this paper, we have presented a new type of control joint filler developed from the latest polyurea sealant technology, and investigated its compression-deflection characteristics, movement capabilities, and physical properties. During this investigation, two commercially available epoxy control joint fillers were subjected to the same compression-deflection test, and it was discovered that the polyurea control joint filler provided equal compressive resistance. The polyurea control joint filler was specially formulated to provide a balance between stiffness (compressive resistance) and flexibility. The flexibility of the polyurea control joint filler allowed the product to complete ten cycles of movement without experiencing loss of adhesion or cohesive failure. In addition, we observed how the unique cure characteristics of this polyurea control joint filler was fast and consistent over a wide range of temperatures.

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Saturday, January 1, 2011

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Polyurea Development Association The National Association of Corrosion Engineers The Society for Protective Coatings