Flaking and degradation of polyurethane coatings after 2 years of outdoor exposure in Lhasa
文献类型：期刊论文
| 作者 | F. C. Liu ; Y. S. Hao ; Z. Y. Wang ; H. W. Shi ; E. H. Han ; W. Ke |
| 刊名 | Chinese Science Bulletin
 |
| 出版日期 | 2010 |
| 卷号 | 55期号:7页码:650-655 |
| 关键词 | FTIR XPS AFM degradation weathering flake urethane Lhasa weathering resistance performance tests films xps |
| ISSN号 | 1001-6538 |
| 中文摘要 | The exposure of a high gloss polyurethane aircraft topcoat system with polyurethane intermediate coating and epoxy primer to strong ultraviolet radiation in Lhasa, Tibet was studied by using scanning electron microscopy (SEM), atomic force microscopy (AFM), attenuated total reflectance Fourier-transform infrared (ATR-FTIR), and X-ray photoelectron spectroscopy (XPS). Micro-flakes were found to form on the topcoat surface after exposure and the size and quantity of the flakes increased with the increase of the exposure time. The magnitude of micro-bulges and the topcoat roughness increased after a long exposure to sunlight. Flakes and micro-bulges resulted in the loss of the topcoat gloss. ATR-FTIR and XPS analysis indicated that chain scissions of the polyurea C=O group and the polyurethane C-O-C and CO-NH groups occurred, and the degradation products of NH and carbonyl groups formed due to the exposure. The breaking of the chemical structure of the polyurethane resulted in a decrease in its elasticity and in the adhesion of the flakes to its surface. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31277]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | F. C. Liu,Y. S. Hao,Z. Y. Wang,et al. Flaking and degradation of polyurethane coatings after 2 years of outdoor exposure in Lhasa[J]. Chinese Science Bulletin,2010,55(7):650-655. |
| APA | F. C. Liu,Y. S. Hao,Z. Y. Wang,H. W. Shi,E. H. Han,&W. Ke.(2010).Flaking and degradation of polyurethane coatings after 2 years of outdoor exposure in Lhasa.Chinese Science Bulletin,55(7),650-655. |
| MLA | F. C. Liu,et al."Flaking and degradation of polyurethane coatings after 2 years of outdoor exposure in Lhasa".Chinese Science Bulletin 55.7(2010):650-655. |
入库方式： OAI收割
来源：金属研究所
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