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The purpose of this presentation is to introduce you to low-pressure, ambient temperature spraying of polyurea and to discuss the advantages of low-pressure spray equipment. Some of the inherent advantages are equipment cost, ease of use, less over-spray, and equipment mobility. This presentation will be divided into several key areas. We will examine features and benefits, general equipment specifications, capabilities, operation of the system, typical periodic maintenance requirements and examples of available options.
Recent polyurea resin technology advances have allowed for the development of value-added polyurea topcoats that are proving to be valuable alternatives for many polyurethane applications. The development of an SSPC specification for a weatherable polyurea topcoat is discussed for the purpose of providing a standard that will be acceptable throughout our industry.
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Ours is an age of stringent VOC regulations and one of the positive responses from coating formulators has been the advent of innovative high solids coatings that contain exempt solvents. While proper surface preparation for applying lining systems has always been crucial to long term coating success our field experience has shown that this is all the more the case with coatings formulated with one or more exempt solvents.
Duplex coatings are used to protect galvanizing in harsh environments, provide aesthetics, and enhance corrosion protection. Surface preparation is critical to achieving long term performance, and abrasive blasting was found to be the most effective surface preparation technique.