Abstract
The most demanding exterior paint applications typically require not only the coating gloss and color are maintained for 10 years or longer, but also the barrier properties are maintained during the same period. Service life prediction (SLP) theory looks at the microscopic antecedents of the failure modes which ultimately limit the service life of coatings. SLP theory can be used to help identify key material requirements for the coating, such as the photochemical stability of the paint binder, or its ability to maintain specific-tensile properties during outdoor exposure. New latex materials based on poly(vinylidene fluoride) copolymers offer the possibility of achieving these demanding performance requirements in air-dry paints, suitable as topcoats for architectural coatings on various substrates, and in industrial maintenance applications.
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