Deterioration of surface structure of lacquer films due to ultraviolet irradiation
Deterioration of surface structure of lacquer films due to ultraviolet irradiation
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DOI：
10.1002/sia.2451
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发表时间：
2006-09-01
影响因子：
1.7
通讯作者：
Miyakoshi, Tetsuo
中科院分区：
文献类型：
--
作者：
Kamiya, Yoshimi;Lu, Rong;Miyakoshi, Tetsuo
揭示了在 15-20 摄氏度、相对湿度 60-70% 的环境下干燥的黑色（含铁离子）和黑色（半透明）漆膜因紫外线照射而劣化的机理。通过显微镜、IR 和 XPS 观察表面来评估漆膜的变化。在紫外线照射下48小时内，黑漆膜中出现了颗粒状物质和环形形状，但在紫外线照射下240小时之前，黑漆膜中没有出现颗粒状物质和环形形状。 XPS谱图中3445 cm(-1)附近的IR峰由于羟基的作用而增加，随着UV照射时间的增加，C峰减少，0增加，表明漆膜表面发生了化学反应。在涂膜的顶表面上，在黑漆膜中观察到许多环形形状，这表明黑漆膜比黑漆膜劣化得更快。此外，根据Py-GC/MS测量结果，还详细讨论了黑漆膜的结构变化。版权所有 (C) 2006 John Wiley & Sons, Ltd.
The mechanism of deterioration due to ultraviolet irradiation of black (with iron ion) and kurome (translucent) lacquer films that had been dried at 15-20 degrees C in 60-70% relative humidity environment was revealed. The lacquer film changes were evaluated by observations of the surface by microscopy, IR, and XPS. A particulate material and toroidal shapes appeared in the black lacquer film during UV irradiation within 48 h, but they did not appear in the kurome lacquer film under UV irradiation before 240 h. The IR peak at similar to 3445 cm(-1) increased owing to the hydroxyl group, and the C is peak decreased and 0 Is increased in the XPS spectra as the UV irradiation time increased, implying that a chemical reaction occurred on the surface of the lacquer film. On the top surface of the coating film, many toroidal shapes were observed in the black lacquer film, which showed that the black lacquer film deteriorated more quickly than the kurome lacquer film. In addition, the structural changes in the black lacquer film are also discussed in detail, on the basis of the results of the Py-GC/MS measurement. Copyright (C) 2006 John Wiley & Sons, Ltd.