A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Weatherability of exterior wood coatings in Japan
The weather resistance of eleven commercial exterior wood coatings was assessed using natural and artificial accelerated (sunshine carbon-arc) weathering trials. The colour, water repellency, glossiness and extent of surface defects in finishes were evaluated before and after the weathering tests. The main defects that developed in the film forming coatings were cracks and delamination of the film. In contrast, the penetrating stains showed discoloration due to loss of pigmentation and the accumulation of atmospheric particulate pollutants. A questionnaire was developed that asked respondents to comment on the refinishing requirements for exterior coatings exposed to natural and accelerated weathering. Results suggested that refinishing of film forming coatings and penetrating stains exposed to accelerated weathering was required after 1500 - 2000 hours and 1000 - 1500 hours, respectively. Refinishing of film forming coatings and penetrating stains exposed to natural weathering was required after 12 - 24 months and 6 - 12 months, respectively. From the results of the exposure trial (above) and the questionnaire a rating scale to assess the loss in properties of exterior coatings during natural and accelerated weathering was developed.
Weatherability of exterior wood coatings in Japan
The weather resistance of eleven commercial exterior wood coatings was assessed using natural and artificial accelerated (sunshine carbon-arc) weathering trials. The colour, water repellency, glossiness and extent of surface defects in finishes were evaluated before and after the weathering tests. The main defects that developed in the film forming coatings were cracks and delamination of the film. In contrast, the penetrating stains showed discoloration due to loss of pigmentation and the accumulation of atmospheric particulate pollutants. A questionnaire was developed that asked respondents to comment on the refinishing requirements for exterior coatings exposed to natural and accelerated weathering. Results suggested that refinishing of film forming coatings and penetrating stains exposed to accelerated weathering was required after 1500 - 2000 hours and 1000 - 1500 hours, respectively. Refinishing of film forming coatings and penetrating stains exposed to natural weathering was required after 12 - 24 months and 6 - 12 months, respectively. From the results of the exposure trial (above) and the questionnaire a rating scale to assess the loss in properties of exterior coatings during natural and accelerated weathering was developed.
Weatherability of exterior wood coatings in Japan
Witterungsbeständigkeit von Holzbeschichtungen in Japan
Kiguchi, M. (author) / Suzuki, M. (author) / Imamura, Y. (author)
1998
17 Seiten, 13 Bilder, 8 Tabellen, 18 Quellen
Conference paper
English
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