文献类型：期刊文献

英文题名：Photostabilizing Efficiency of Acrylic-based Bamboo Exterior Coatings Combining Benzotriazole and Zinc Oxide Nanoparticles

作者：Rao, Fei[1,2,3] Zhang, Yahui[2] Bao, Minzhen[1,3] Zhang, Zhiyuan[4] Bao, Yongjie[1,2,3] Li, Neng[1,2] Chen, Yuhe[1,2] Yu, Wenji[1,2]

第一作者：Rao, Fei

通信作者：Li, N[1];Chen, YH[1];Li, N[2];Chen, YH[2]

机构：[1]China Natl Bamboo Res Ctr, Dept Efficient Utilizat Bamboo & Wood, Wenyi Rd 310, Hangzhou 310012, Zhejiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Dept Wood Based Panels & Adhesives, Xiang Shan Rd, Beijing 100091, Peoples R China;[3]Key Lab High Efficient Proc Bamboo Zhejiang Prov, Dept Efficient Utilizat Bamboo & Wood, Wenyi Rd 310, Hangzhou 310012, Zhejiang, Peoples R China;[4]Zhejiang Humanities Landscape Co Ltd, Dept Aquat Bot, Tianmushan Rd 223, Hangzhou 310012, Zhejiang, Peoples R China

年份：2019

卷号：9

期号：9

外文期刊名：COATINGS

收录：;Scopus(收录号：2-s2.0-85072177103);WOS:【SCI-EXPANDED(收录号:WOS:000487973600020)】；

基金：This research was funded by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2018MB008) and the National Key Research and Development Program of China (2016YFD0600904).

语种：英文

外文关键词：bamboo; benzotriazole; zinc oxide nanoparticles; photostability; synergistic; outdoor

摘要：Long-term exposure to ultraviolet (UV) light can degrade and discolor bamboo; thus, coatings to protect it from UV exposure are required, especially for outdoor use. Benzotriazole (BTZ) and zinc oxide nanoparticles (NZnO) are organic and inorganic UV absorbers commonly used in UV shielding coatings. This study investigated the photostabilizing efficiency of acrylic-based bamboo exterior coatings using a combination of BTZ and NZnO. Different film formulations covering bamboo substrates were irradiated with artificial UV light for 500 h to accelerate aging. The UV-shielding effect on bamboo beneath various films was determined by CIELAB color space and Fourier transform infrared (FTIR) analysis. The film effectiveness was analyzed by scanning electron microscopy, wettability, UV-vis spectroscopy, and FTIR-attenuated total reflection (ATR) spectroscopy. Films containing BTZ provided higher resistance to photodegradation and more effectively inhibited photodiscoloration of the bamboo substrates than those prepared solely with NZnO. After 500 h of UV irradiation, the BTZ-NZnO film containing 2 wt % BTZ and 1 wt % NZnO showed the best coating performance. Strong synergistic effects were detected in the BTZ-NZnO coatings, particularly for the 2:1 ratio formulation. This study also demonstrated the potential of combining BTZ and NZnO as additives for developing stable, effective UV-shielding bamboo exterior coatings for outdoor applications.