caa a22 4500 463247485 CHVBK 20180405153330.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10086-006-0838-8 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0838-8 Surface deterioration of wood-flour polypropylene composites by weathering trials [Elektronische Daten] [Makoto Kiguchi, Yutaka Kataoka, Hiroshi Matsunaga, Koichi Yamamoto, Philip Evans] The market for wood-fiber plastic composites (WPCs) is expanding rapidly in many countries including Japan, where WPCs are mainly used for exterior products. In such applications, WPCs undergo undesirable color change, chalking, and shrinkage and swelling, and accordingly there is a need to better understand the mechanisms responsible for the weathering of WPC and develop methods of improving their weathering resistance. In this study, weatherability of WPC was assessed by natural and accelerated weathering trials. Discoloration (whitening) of WPC during exposure was caused by degradation of both wood and plastic. Darker color pigments as additives improved the color stability of WPC; however, chalking on the surfaces still occurred. The color stability of WPC was improved by application of exterior coatings. Preweathering of WPC (before coatings were applied) increased the absorption of coatings by the WPC and had a positive effect on the color stability and prevented chalking of the composites. The Japan Wood Research Society, 2006 WPC nationallicence Weathering nationallicence Discoloration nationallicence Chalking nationallicence Finishing nationallicence Kiguchi Makoto Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut Kataoka Yutaka Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut Matsunaga Hiroshi Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut Yamamoto Koichi Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut Evans Philip Centre for Advanced Wood Processing, University of British Columbia, V6T 1Z4, Vancouver, British Columbia, Canada aut Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 234-238 1435-0211 53:3<234 2007 53 10086 https://doi.org/10.1007/s10086-006-0838-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0838-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kiguchi Makoto Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut NATIONALLICENCE 700 1- Kataoka Yutaka Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut NATIONALLICENCE 700 1- Matsunaga Hiroshi Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut NATIONALLICENCE 700 1- Yamamoto Koichi Forestry and Forest Products Research Institute (FFPRI), PO Box 16, 305-8687, Tsukuba Norin, Tsukuba, Japan aut NATIONALLICENCE 700 1- Evans Philip Centre for Advanced Wood Processing, University of British Columbia, V6T 1Z4, Vancouver, British Columbia, Canada aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 234-238 1435-0211 53:3<234 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer