Benzodifuranone based color-changing epoxy-polyamine coating
Benzodifuranone based color-changing epoxy-polyamine coating
复制标题
苯并二呋喃酮基变色环氧聚胺涂料
DOI：
10.1016/j.dyepig.2019.01.016
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发表时间：
2019-05-01
影响因子：
4.5
通讯作者：
Zhou, Qixin
中科院分区：
文献类型：
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作者：
Zeng, Weixiu;Deng, Zhifeng;Zhou, Qixin
将苯并二呋喃酮（1，4-BDF）颜料引入环氧-多胺涂料中，制备了一种新型的环氧变色涂料。基于1，4-BDF的环氧涂层表现出响应于环境条件（例如温度、UV光和pH）的从深蓝色到棕色的颜色变化。涂层的颜色通过光谱反射率和由光谱引导分光光度计测量的CIELAB值来证明。通过UV/维斯和FTIR分析，颜色变化是由于1，4-BDF颜料与多胺固化剂反应形成不稳定的产物。此外，涂层的不透明度和光反射率随着颜色的变化而沿着变化。不透明度是一个有效的参数，可以将紫外加速试验和日光暴露联系起来，以显示涂层外观的变化。
A new color-changing epoxy coating was developed by incorporating benzodifuranone (1,4-BDF) pigments into epoxy-polyamine coating matrix. The 1,4-BDF based epoxy coating exhibited a color change from dark blue to brown responding to environmental conditions, such as temperature, UV light, and pH. The color of the coating was demonstrated by the spectral reflectance and CIELAB values measured by a spectro-guide spectrophotometer. The color change was due to the reaction of 1,4-BDF pigment with the polyamine curing agent to form an unstable product characterized by UV/Vis and FTIR analysis. Moreover, the coating's opacity and light reflectance changed along with the color change. Opacity is an effective parameter to link the UV accelerated testing and sunlight exposure to demonstrate the change of the coating's appearance.