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首页> 外文会议>International Symposium on State-of-the-Art Application of Surface and Interface Analysis Methods to Environmental Material Interactions: in Honor of James E.Castle's 65th Year, Mar 26-27, 2001, Washington D.C. >NOVEL TECHNIQUES FOR THE INVESTIGATION OF LONG-TERM PHOTO-DEGRADATION OF MULTI-LAYER POLYMER COATINGS
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NOVEL TECHNIQUES FOR THE INVESTIGATION OF LONG-TERM PHOTO-DEGRADATION OF MULTI-LAYER POLYMER COATINGS

机译：多层聚合物涂层长期光降解研究的新技术

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摘要

It is well known that certain polymer coating systems can become degraded when subjected to prolonged exposure to the elements. It is believed that the driving force behind this degradation mechanism is UV light. Because of the electrically insulating and optically opaque nature of paints, they pose considerable difficulties when analysis is attempted using the traditional techniques of surface science (Auger, SIMS, XPS, etc.) The objective of this ongoing work is to develop novel techniques that permit effective analysis of multi-layer Chemical Agent Resistant Coatings (CARC) in order to precisely determine the chemical mechanisms of environmental degradation triggered in these coatings. FT-IR was performed on microtomed cross-sectional samples. Frequency domain digital image correlation was used as a sensor to detect the onset and distribution of weathering damage. Finally, the ultra-fast phenomenon of femtosecond laser ablation was employed to remove successive layers of coating to enable depth analysis.
机译：众所周知，某些聚合物涂层体系在长时间暴露在元素下会变质。可以认为，这种降解机理的驱动力是紫外线。由于涂料的电绝缘和光学不透明的特性，当使用表面科学的传统技术（Auger，SIMS，XPS等）尝试进行分析时，它们构成了相当大的困难。这项正在进行的工作的目的是开发允许多层耐化学试剂涂层（CARC）的有效分析，以精确确定这些涂层中引发的环境退化的化学机理。 FT-IR在切片样品上进行。频域数字图像相关性用作检测风化破坏的发生和分布的传感器。最后，飞秒激光烧蚀的超快现象被用于去除涂层的连续层，以进行深度分析。

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