Ageing mechanism of durability of various kinds of sealants was discussed in the light of their cross-linking process, testing results of heat ageing and Xenon lamp weathering.

本文结合各类密封材料的交联反应过程和热老化、氙灯老化试验结果，对其耐久性的老化反应机理进行了探讨。

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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。

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