廢紙纖維水泥板用塗料之耐候性與耐光性之研究

Study on Coating Weatherability and Lightfastness of Wastepaper Cement Fiberboard

鄒哲宗(Che-Tsung Tsou) ； 夏滄琪(Tsang-Chyi Shiah) ； 尹華文(Hwa-Wen Yin) ； 顧文君(Wen-Jun Ku)

《台灣林業科學》 12卷3期 (1997/09) Pp. 363-368

https://doi.org/10.7075/TJFS.199709.0363

摘要

本試驗針對廢紙纖維水泥板塗裝試材進行耐候及耐光性質測定：於所測試塗料中，氟碳類塗膜擁有較穩定之顏色及光澤度變化，其接觸角角度維持最高；然而抗剝離性能較差。塗膜附著性能以PE塗膜較佳，然而其戶外曝露下之塗膜光澤度衰減顯著。白色之PU及環氧樹脂塗膜之變色和光澤度衰減較透明塗膜顯著。以掃描式電子顯微鏡觀察可發現，透明塗膜多呈現龜裂破壞，白色塗膜則多呈現表面粗糙或白堊化之破壞現象。

關鍵字

廢紙纖維水泥板 ； 耐候性 ； 耐光性

並列摘要

To Promote increased use of waste recycling and reuse, this study investigates the weatherability and lightfastness of coatings applied on wastepaper cement fiberboard. Six kinds of commercial coatings, including unsaturated polyester, polyurethane, epoxy resin coatings, and fluorocarbon coatings were examined. The following conclusions can be drawn:
1. Experimental results indicate that the fluorocarbon coating shows the most stable color difference value and gloss variation, and maintains the largest contact angle among the finishes studied, except for the adhesion characteristics of the film.
2. The unsaturated polyester coating has better adhesion, but the gloss of the coated surface showed a remarkable deteriorating trend during the outdoors exposure test.
3. The trend of discoloration and gloss deterioration of white polyurethane and epoxy resin coatings was remarkably greater than for the clear coatings.
4. It was observed from the SEM images of coated surfaces, that clear coatings showed a cracking phenomenon, while white coatings showed roughness and/or check failure.

並列關鍵字

wastepaper cement fiberboard ； weatherability ； lightfastness