Study on Surface Discoloration and Color Stability of Iron Ions Treated European Oak（Quercus robur）

QIU Hong-yun; LONG Ling; LIU Ru; XU Jian-feng; LI Xiao-yan

doi:10.19455/j.mcgy.20200502

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Study on Surface Discoloration and Color Stability of Iron Ions Treated European Oak（Quercus robur）
1. Research Institute of Forestry New Technology,Chinese Academy of Forestry
2. Research Institute of Wood Industry,Chinese Academy of Forestry
Vol. 34, Issue 5, Pages: 7-12(2020)
DOI： 10.19455/j.mcgy.20200502

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[1]邱竑韫,龙玲,刘如,徐建峰,李晓艳.表面铁离子处理对欧洲栎木材颜色变化及稳定性影响的研究[J].木材工业,2020,34(05):7-12+16.

QIU Hong-yun, LONG Ling, LIU Ru, et al. Study on Surface Discoloration and Color Stability of Iron Ions Treated European Oak（Quercus robur）. [J]. China Wood Industry 34(5):7-12(2020)
[1]邱竑韫,龙玲,刘如,徐建峰,李晓艳.表面铁离子处理对欧洲栎木材颜色变化及稳定性影响的研究[J].木材工业,2020,34(05):7-12+16. DOI： 10.19455/j.mcgy.20200502.

QIU Hong-yun, LONG Ling, LIU Ru, et al. Study on Surface Discoloration and Color Stability of Iron Ions Treated European Oak（Quercus robur）. [J]. China Wood Industry 34(5):7-12(2020) DOI： 10.19455/j.mcgy.20200502.

摘要

为获得颜色稳定的深色栎木地板,采用Fe,2,（SO,4,）,3,溶液对欧洲栎木材表面进行化学变色处理,并测试其在紫外光及高温高湿环境下的颜色稳定性。研究结果表明:随着Fe,2,（SO,4,）,3,溶液质量分数升高,试样表面颜色趋暗和绿蓝色,质量分数高于6%后颜色基本稳定;紫外光老化96h后,所有试样表面颜色趋于暗、红、黄;在高温高湿老化条件下,不同质量分数溶液处理试样的表面颜色变化趋势不一致,总体趋于更暗、更红、更蓝;两种条件下老化96 h后,8%质量分数溶液处理试样的颜色稳定性最优。Fe,2,（SO,4,）,3,处理能赋予栎木现代感的深色表面,UV漆涂饰能进一步提高其颜色稳定性,建议进一步优化Fe,2,（SO,4,）,3,处理体系,以获得颜色稳定且美观的木材表面化学变色方法。

Abstract

A series of experiments were conducted to explore the effect of various concentrations of Fe,2,（SO,4,）,3, solution on the color change of oak floor; the color stability of treated wood during the accelerated aging process of UV and high temperature and humidity was investigated. The results showed that the oak became darkened, greening and bluing with the increasing concentration of Fe,2,（SO,4,）,3,. After the concentration value was higher than 6%, the surface color did not further change. After 96 hours of the UV aging treatment, the surface color of all samples tended to be darkened, reddening and yellowing; the intensity of color change of samples under the high temperature and humidity conditions was different, and inclining to be darker, more reddish and blueish. The samples treated with 8% concentration of Fe,2,（SO,4,）,3, solution presented the best color stability. The Fe,2,（SO,4,）,3, treatment contributed to darken the surface of the oak. The samples had better color stability and different shades of colors after the UV coating. It was suggested that further studies on optimizing the Fe,2,（SO,4,）,3, treatment need to be carried out to form a chemical coloration method for wood surfaces with stable and attractive color properties.