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11039 The Progress of Newly Developed Fluoro-polymer Topcoat Systems Weathering performance and track records since the 1980’s

Picture for 11039 The Progress of Newly Developed Fluoro-polymer Topcoat Systems
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Outdoor tests and accelerated weathering experiments have been carried out to confirm the weathering performance of coating systems with ambient cure fluoro-polymer topcoats. The results showed that the protective performance of such coating systems was superior to other topcoats such as polyurethane coating.

Product Number: 51300-11039-SG
ISBN: 2011 11039 CP
Author: Hiroyuki Tanabe, Masanori Nagai, Winn Darden and Takashi Takayanagi
Publication Date: 2011
Industry: Coatings and Linings
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$20.00

Coating systems with ambient cure fluoro-polymer topcoats were developed in 1982 and have been applied to numerous steel structures since then. They have been demonstrated to give the best weathering performance among other commonly used topcoats. To confirm this, outdoor tests and accelerated weathering tests have been carried out. Gloss retention during exposure was measured, the surface appearance of each sample observed by SEM, and surface degradation analyzed by FT-IR spectroscopy. In addition, the extent of coating degradation by chalking was measured. It was observed that chalking of fluoro-polymer was much lower compared with that of coating systems such as polyurethanes, which means the fluoro-polymer coating retains its initial coating film thickness. Fluoro-polymer coatings have been applied to many steel and concrete structures, for example to high rise buildings and bridges where it is not easy to do maintenance. The results showed that the protective performance of the fluoro-polymer coating system was superior to other topcoats such as the polyurethane coating. Track records of fluoro-polymer topcoats were also studied and compared with laboratory testing.

Key words: Weather-ability, Protective performance, Fluoro-polymer coating Surface observations, maintenance, Life cycle cost

Coating systems with ambient cure fluoro-polymer topcoats were developed in 1982 and have been applied to numerous steel structures since then. They have been demonstrated to give the best weathering performance among other commonly used topcoats. To confirm this, outdoor tests and accelerated weathering tests have been carried out. Gloss retention during exposure was measured, the surface appearance of each sample observed by SEM, and surface degradation analyzed by FT-IR spectroscopy. In addition, the extent of coating degradation by chalking was measured. It was observed that chalking of fluoro-polymer was much lower compared with that of coating systems such as polyurethanes, which means the fluoro-polymer coating retains its initial coating film thickness. Fluoro-polymer coatings have been applied to many steel and concrete structures, for example to high rise buildings and bridges where it is not easy to do maintenance. The results showed that the protective performance of the fluoro-polymer coating system was superior to other topcoats such as the polyurethane coating. Track records of fluoro-polymer topcoats were also studied and compared with laboratory testing.

Key words: Weather-ability, Protective performance, Fluoro-polymer coating Surface observations, maintenance, Life cycle cost

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