SYMPOSIA PAPER Published: 01 January 1980
STP36100S

Performance Characterization of Exterior Metal Paints

Source

Reliable quantitative assessment of in-service capabilities of metal protection paint systems has been impeded in part by difficulties in characterizing the relevant compositional, physical, and environmental variables; but, more significantly, by the lack of a working theory of paint system weathering that incorporates the variables according to their significance. Observations of many paint systems over many years in various environments have suggested the generalization that degradation of most paint systems over a time period can be described by an S-shaped curve. A rational application of rate theory leads to a general equation for paint system performance. Important refinements to this equation may be developed in time, but for the present, emphasis is directed toward elucidating a methodology that coatings engineers may begin to use immediately.

Author Information

Tooke, R
Micro-Metrics Company, Atlanta, Ga.
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Details
Developed by Committee: E06
Pages: 689–697
DOI: 10.1520/STP36100S
ISBN-EB: 978-0-8031-4768-3
ISBN-13: 978-0-8031-0325-2