The modified polystyrene samples were exposed outdoor at Lasa and Mohe natural environmental test stations and their weathering mechanism was studied by using XPS.
通过改性聚苯乙烯试样在拉萨和漠河户外暴露试验，利用X射线光电子能谱(XPS)探讨了改性聚苯乙烯材料表面老化机制。
Outdoor weathering must be used to verify accelerated testing, and it is possible with the correct testing procedure to get meaningful data from an outdoor test in a short time frame.
使用正确的测试程序，户外暴露测试可以在较短的时间内获得较好的测试结果。
Two artificial weathering tests were conducted according to different standards, and correlations between outdoor exposure test and artificial weathering tests were compared.
并根据不同的试验标准进行了两种人工气候老化试验，比较了这两种方法与自然气候暴露试验结果的相关性。
Two artificial weathering tests were conducted according to different standards, and correlations between outdoor exposure test and artificial weathering tests were compared.
并根据不同的试验标准进行了两种人工气候老化试验，比较了这两种方法与自然气候暴露试验结果的相关性。
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