Improving the Performance of Clear Coatings on Wood through the Aggregation of Marginal Gains
AbstractRemarkable increases in the performance of complex systems can be achieved by a collective approach to optimizing individual factors that influence performance. This approach, termed the aggregation of marginal gains, is tested here as a means of improving the performance of exterior clear-coatings. We focused on five factors that influence clear-coating performance: dimensional stability of wood; photostability of the wood surface; moisture ingress via end-grain; coating flexibility and photostability; and finally coating thickness. We performed preliminary research to select effective wood pre-treatments and durable clear-coatings, and then tested coating systems with good solutions to each of the aforementioned issues (factors). Red oak and radiata pine panels were modified with PF-resin, end-sealed, and thick acrylic, alkyd or spar varnishes were applied to the panels. Panels were exposed to the weather and the level of coating defects was assessed every year over a 4-year period. All of the coatings are performing well on PF-modified pine after 4 years’ outdoor exposure. In contrast, coatings failed after 2 years on unmodified pine and they are failing on PF-modified oak. We conclude that our approach shows promise. Future research will build on the current work by developing solutions to additional factors that influence clear-coating performance. View Full-Text
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Evans, P.D.; Vollmer, S.; Kim, J.D.W.; Chan, G.; Kraushaar Gibson, S. Improving the Performance of Clear Coatings on Wood through the Aggregation of Marginal Gains. Coatings 2016, 6, 66.
Evans PD, Vollmer S, Kim JDW, Chan G, Kraushaar Gibson S. Improving the Performance of Clear Coatings on Wood through the Aggregation of Marginal Gains. Coatings. 2016; 6(4):66.Chicago/Turabian Style
Evans, Philip D.; Vollmer, Stephan; Kim, Joseph D.W.; Chan, George; Kraushaar Gibson, Sara. 2016. "Improving the Performance of Clear Coatings on Wood through the Aggregation of Marginal Gains." Coatings 6, no. 4: 66.
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