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| Spatial resolution comparison of AC-SECM with SECM and their characterization of self-healing performance of hexamethylene diisocyanate trimer microcapsule coatings | |
Wang, Wei1,2; Xu, Likun1; Sun, Huyuan2 ; Li, Xiangbo1; Zhao, Shouhuan3; Zhang, Weining4
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| 2015-03-14 | |
| 发表期刊 | JOURNAL OF MATERIALS CHEMISTRY A
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| 卷号 | 3期号:10页码:5599-5607 |
| 文章类型 | Article |
| 摘要 | Hexamethylene diisocyanate trimer (HDIt) microcapsules were synthesized by in situ polymerization and were characterized via field emission-scanning electron microscopy, fluorescence microscopy, and Fourier transform infrared spectroscopy. We added HDIt microcapsules into epoxy resin coatings as functional additives and then assessed the resulting self-healing performance of the epoxy resin coatings using a scratched crevice on a 5083 aluminum surface as a test scenario. The protective coating with the HDIt microcapsules had robust self-healing after the samples were immersed in a solution of 0.6 M NaCl for 48 h. Healing efficiencies of epoxy resin coatings as high as 45.3 +/- 2.9%, characterized by a fracture test, were achieved for 16 wt% HDIt microcapsules. The self-healing ability was further shown by using scanning electrochemical microscopy (SECM) and alternating current scanning electrochemical microscopy (AC-SECM). We found that AC-SECM offered additional local electrochemical topographies of the self-healing surface at different AC frequencies. Comparing the two topographical tests obtained from both SECM and AC-SECM revealed that AC-SECM achieved better spatial resolution and was less influenced by the scanning step size and the cleanliness of the tip surface. |
| DOI | 10.1039/c5ta00529a |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350682100046 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/25412 |
| 专题 | 海洋环境腐蚀与生物污损重点实验室 |
| 作者单位 | 1.Luoyang Ship Mat Res Inst, State Key Lab Marine Corros & Protect, Qingdao 266101, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Shanghai Ocean Univ, Food Sci & Technol Coll, Shanghai 201306, Peoples R China 4.Beijing Yinglong Technol Co Ltd, Beijing 100073, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Wang, Wei,Xu, Likun,Sun, Huyuan,et al. Spatial resolution comparison of AC-SECM with SECM and their characterization of self-healing performance of hexamethylene diisocyanate trimer microcapsule coatings[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(10):5599-5607. |
| APA | Wang, Wei,Xu, Likun,Sun, Huyuan,Li, Xiangbo,Zhao, Shouhuan,&Zhang, Weining.(2015).Spatial resolution comparison of AC-SECM with SECM and their characterization of self-healing performance of hexamethylene diisocyanate trimer microcapsule coatings.JOURNAL OF MATERIALS CHEMISTRY A,3(10),5599-5607. |
| MLA | Wang, Wei,et al."Spatial resolution comparison of AC-SECM with SECM and their characterization of self-healing performance of hexamethylene diisocyanate trimer microcapsule coatings".JOURNAL OF MATERIALS CHEMISTRY A 3.10(2015):5599-5607. |
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