Abstract: ［Objective］ This study aims to rapidly evaluate the performance of anticorrosiveweatherable coatings used in marine environments of China.［Methods］ Two artificial accelerated ageing test procedures suitable for China..s actual marine environments were established referring to thecyclic ageing test procedures outlined in ISO 12944 and Norsok M501. Procedure 1（P1）consists of one cycle：72 h of UV aging（UVA-340）/condensation + 72 h of salt spray + 24 h of high-low temperature alternation. Procedure 2（P2）consists of one cycle：120 h of UV ageing（UVB-313）/condensation + 48 h of salt spray. Verification tests were conducted，with natural weathering exposures in the South China Sea and East China Sea as benchmarks for comparison.［Results］Procedure P1 was suitable for evaluating weatherable coatings with low requirements for the appearance performance but high requirements for corrosion resistance，such as those for offshore platforms. It achieved an accelerationfactor of more than 21 times for anti-corrosion performance. Procedure P1 was suitable for evaluatingcoatings with high requirements for appearance performance，such as ship topside paints. The acceleration rate relative to one-year atmospheric exposure was about 4-6 times，and approximately 7-9. 5 times relative to two-year atmospheric exposure.［Conclusion］ Both cyclic ageing proceduresdemonstrated significant acceleration effect for investigating anticorrosive weatherable coating systems.However，the appropriate test procedure should be selected according to the specific application scenario. 

Key words: anticorrosive weatherable coatings；artificial acceleration；performance evaluation 

摘要： 【目的】对应用于我国海洋环境下的防腐耐侯涂料进行快速性能考核与评价。【方法】参照 ISO1 2944及 Norsok M501中的循环老化试验程序，设定了 2个适用于我国实际海洋环境的人工加速老化试验程序，程序 1（P1）为 72 h紫外老化（ UVA-340）/冷凝 +72 h盐雾 +24 h高低温交变作为 1个循环；程序 2（P2）为 120 h紫外（UVB-313）/冷凝 +48 h盐雾作为 1个循环，并以南海及东海自然环境下的耐候性试验作为比对，开展了验证试验。【结果】 P1程序适用于海工平台等对涂层的外观性能要求不高，但对防腐要求较高的耐候涂料性能评估，对防腐性能的加速达 21倍以上。而 P2程序适用于船舶等对涂层外观性能要求较高的涂层性能评估， 1a期大气曝晒的加速倍率为 4~6，2a期大气曝晒的加速倍率为 7~9. 5。【结论】本文所设置的 2个循环老化程序对考察防腐耐候涂料体系均有明显的加速效果，但应用对象有所不同。

关键词: 防腐耐候涂料, 人工加速, 性能评价

CLC Number: 

• TQ630. 7+ 2