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Recently, the advantages of thick film coatings and linings have led to uses in many different applications in the industrial, commercial and automotive markets. Although this polyurethane and polyurea materials have excellent physical properties, they are based on aromatic chemistry which is susceptible to damage from UV radiation and is not light stable.
Recently, the advantages of thick film coatings and linings have led to uses in many different applications in the industrial, commercial and automotive markets. Although this polyurethane and polyurea materials have excellent physical properties, they are based on aromatic chemistry which is susceptible to damage from UV radiation and is not light stable. These aromatic-based materials discolor with sunshine and UV exposure. This presentation discusses a new type of thick film coating that utilizes aliphatic polyurethane chemistry. This material is relatively unaffected by UV radiation and is thus light stable. At the same time, they have been specially formulated to have excellent physical properties and wear performance. They exhibit excellent abrasion resistance, toughness and slip resistance while providing exceptional protection from detrimental effects of UV light. This paper presents the physical properties and performance characteristics of this new class of material. Weathering data comparing standard aromatic products versus the new aliphatic lining is provided. Potential applications for such protective linings are also discussed.
Water leakage into exterior wall construction is one of the principal causes of damage and deterioration to facade materials and underlying construction. This paper discusses the basic approaches currently used to keep water out of buildings and their relationship to several common exterior wall systems.
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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.
Fluoroethylene-vinyl ether (FEVE) resins were developed in the early 1980’s. These thermoset solution fluoropolymer resins are used to make highly durable, weatherable, and corrosion resistant air-dry coatings. Applications are found in architectural, industrial, automotive, and aerospace markets, and in infrastructure coatings for bridges, oil rigs, and water towers.