| ZHANG Yi-gang,HAN Wen-li,ZHANG Qi-bin,ZHANG Yan-jun,XIE Bei-bei,XU Zhong-ping.Steel Structure Coating System and Performance Evaluation in Marine Atmospheric Zone[J],45(11):118-122 |
| Steel Structure Coating System and Performance Evaluation in Marine Atmospheric Zone |
| Received:March 11, 2016 Revised:November 20, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.11.018 |
| KeyWord:marine atmosphere NORSOK M-501 QUV accelerated aging polyurethane steel structure |
| Author | Institution |
| ZHANG Yi-gang |
1.CNPC Research Institute of Engineering Technology, Tianjin , China; 2.Research Division of Anti-corrosion Coating and Thermal Insulation Structure, CNPC Key Tubular Goods Laboratory, Tianjin , China |
| HAN Wen-li |
1.CNPC Research Institute of Engineering Technology, Tianjin , China; 2.Research Division of Anti-corrosion Coating and Thermal Insulation Structure, CNPC Key Tubular Goods Laboratory, Tianjin , China |
| ZHANG Qi-bin |
CNPC Tianjin BO-XING Engineering Science & Technology Co., Ltd, Tianjin , China |
| ZHANG Yan-jun |
1.CNPC Research Institute of Engineering Technology, Tianjin , China; 2.Research Division of Anti-corrosion Coating and Thermal Insulation Structure, CNPC Key Tubular Goods Laboratory, Tianjin , China |
| XIE Bei-bei |
1.CNPC Research Institute of Engineering Technology, Tianjin , China; 2.Research Division of Anti-corrosion Coating and Thermal Insulation Structure, CNPC Key Tubular Goods Laboratory, Tianjin , China |
| XU Zhong-ping |
1.CNPC Research Institute of Engineering Technology, Tianjin , China; 2.Research Division of Anti-corrosion Coating and Thermal Insulation Structure, CNPC Key Tubular Goods Laboratory, Tianjin , China |
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| Abstract: |
| The work aims to evaluate the properties of the self-developed polyurethane supporting system. The evaluation methods of steel structure coating properties in marine atmosphere were summarized. The matching of acrylic polyurethane coating with zinc-rich primer and epoxy primer was investigated through the NORSOK M-501 cyclic corrosion test, and the aging resistance of the self-developed acrylic polyurethane coating was compared with that of foreign similar products through QUV accelerated aging experiment. Corrosion spreading resistance of the supporting system consisting of polyurethane coating and zinc-rich primer was better than that of the supporting system consisting of polyurethane coating and epoxy primer. For the self-developed polyurethane coating system subject to 4200 h of cyclic aging, corrosion in the marked position spread by 5.56 mm (less than 8 mm specified by NORSOK M-501 standard), adhesive force decreased from 12.26 MPa to 9.83 MPa at the attenuation amplitude of 19.8% (less than 50% specified by NORSOK M-501 standard). After aging for 3000 h under UV-irradiation, 60° glossiness of the self-developed polyurethane coating decreased from 81.5 to 66.5 while the gloss retention rate was 82.94%. The self-developed polyurethane coating system is of excellent marine atmospheric environmental resistance. Its cylic aging resistance and UV-light accelerated aging resistance are equivalent to that of foreign similar products. |
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