Journal of the Korean Wood Science and Technology
- Volume 22 Issue 3
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- Pages.45-50
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- 1994
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- 1017-0715(pISSN)
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- 2233-7180(eISSN)
A Color Difference of White Polyurethane Coating Containing Antioxidant
산화방지제가 첨가된 백색 폴리우레탄 도막의 색차
- Lee, Phil-Woo (College of Agriculture & Life Science, Seoul National University) ;
- Yun, Young-Ki (College of Agriculture & Life Science, Seoul National University)
- Received : 1994.06.15
- Published : 1994.09.30
Abstract
This experiment was to investigate the effects of UV radiation and chemical treatments on the color difference in antioxidant (Tris(2,4-di-t-butyl phenoxy) phosphite)-containing polyurethane coats. The results obtained were summerized as follows: 1. The color difference increased as the exposure time of UV radiation increases, but decreased as addition level of antioxidant increaes. 2. After 400 hours exposure to UV radiation, the color difference respectively showed 6.13 and 5.94 at 0.7 % and 1.0 % addition level but appeared more severe below 0.7 % addition level. Thus, antioxidant prevented discoloration effectively. 3. The color difference of films by chemical treatments increased after 8 hours. Color difference of films treated with 5 % acetic acid(