木材用塗料耐候性之研究－塗料耐候性之比較

Study on the Weatherability of Wood Finishes-Comparisons of the Weatherability of Coatings Applied on Wood Surface

李鴻麟(Hong-Lin Lee) ； 鄒哲宗(Che-Tsung Tsou) ； 夏滄琪(Tsang-Chyi Shiah) ； 顧文君(Wen-Jun Ku)

《林業試驗所研究報告季刊》 8卷4期 (1993/12) Pp. 321-330

https://doi.org/10.7075/BTFRI.199312.0321

摘要

本試驗選用商業上常用之透明、不透明聚胺基甲酸酯塗料，並配合光安定劑之添加，將塗料塗裝在橡木上，然後放置於室外45°向南之耐候試驗架上，進行室外耐候試驗；試材計分爲兩組，一組直接曝露於大氣因子中、另一組則置於玻璃片下。經過室外一年之耐候試驗，由塗膜性質分析比較試驗結果顯示，無論添加光安定劑與否，直接曝露於大氣因子下之塗膜劣化較爲嚴重；比較光安定劑種類添加對塗膜耐候性質之改善效果，同時添加兩種光安定劑之效果最佳；比較各種塗膜之耐候性質顯示，以不透明灰色聚胺基甲酸酯塗料之塗膜耐候性質最佳。

關鍵字

聚胺基甲酸酯塗料 ； 光安定劑 ； 耐候性

並列摘要

The purpose of this study is to compare the weatherability of coatings applied on wood surface. Commercial used coatings including two aromatic clear PU, two aliphatic clear PU, red PU, gray PU, and two kinds of light stabilizers added to each coating were examined in this study. After exposure to the outdoors for one year, film properties including color difference, brightness retention and gloss were evaluated. The experimental results revealed that severe deterioration was observed on the specimens exposed directly to the outdoors than those exposed behind the window glass. The best improvement of weatherability for film properties was obtained by adding two kinds of light stabilizers together in all PU coatings. Among the six PU coatings investigated, the gray one whether light stabilizer added or not was proved to obtain the best weatherability for protecting Wood to against weathering.

並列關鍵字

Polyurethane ； light stabilizer ； weatherability