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正电子湮没技术(PAS)作为一种新型的探测手段,近年在研究高分子材料的自由体积等方面获得了很大成功,在涂料领域γ射线多普勒增宽能谱被发现能够很好地研究涂料的老化机理,通过调节入射正电子的能量还可以得到不同深度涂层的自由体积变化和老化程度,综述了PAS技术在涂料中的应用.

参考文献

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