Abstract FTIR-ATR (Focal Plane Array) FPA spectroscopic imaging was used to obtain depth resolved information about degradation of a polyester melamine coating by performing measurements on drilled conical holes. The results of the FTIR-FPA imaging show that combined effect of UV and moisture resulted in larger degradation effects in the outermost parts of the coatings but loss of melamine functionality was detected to the depth of approximately 8–10 μm after 2163 h weathering in QUVA accelerated test and after 4 years exposure in a marine environment. Longer periods of accelerated weathering, up to 4000 h, resulted in degradation through the whole coating outer layer.

中文翻译：

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聚酯三聚氰胺涂层在加速和自然风化后失去三聚氰胺功能的深度分辨 FTIR 焦平面阵列 (FPA) 光谱成像

摘要 FTIR-ATR（焦平面阵列）FPA 光谱成像用于通过对锥形孔进行测量来获得有关聚酯三聚氰胺涂层降解的深度分辨信息。FTIR-FPA 成像结果表明，紫外线和水分的共同作用导致涂层最外层的降解效应更大，但在 QUVA 中风化 2163 小时后，检测到三聚氰胺功能的损失大约为 8-10 μm加速试验和在海洋环境中暴露 4 年后。长达 4000 小时的更长时间加速风化导致整个涂层外层降解。