IOCAS-IR  > 海洋环境腐蚀与与生物污损重点实验室
Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating
Fan, Weijie1,3,4,6; Zhang, Yong4; Li, Weihua1,2; Wang, Wei1,5; Zhao, Xiaodong6; Song, Liying1
2019-07-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume368Pages:1033-1044
Corresponding AuthorLi, Weihua(liweihua@qdio.ac.cn) ; Wang, Wei(wangwei8038@ouc.edu.cn)
AbstractA shape-memory polyurethane (SMPU) was designed and used in the field of self-healing coating due to the capability to recover to its permanent shape in a predefined way. This technique could be modified by two different kinds of microcapsules to improve the localized corrosion resistance of healed coating by induction heating. For this purpose, the SMPU was synthesized by solvent polymerization using isophorone diisocyanate (IPDI) as hard segments and polycaprolactone (PCL) as soft segments. The results obtained from dynamic mechanical thermal analysis (DMTA) displayed a phase-separation structure, which is consistent with the results of H-1 NMR characterization. The repeatable shape-memory measurements further demonstrated that the shape recovery of SMPU is above 75%. Appending some microcapsules embedding Alodine 5200 and a heat-generating agent into SMPU, adhesion of aluminum substrate with healed coatings could be greatly improved, as well as corrosion resistance. In addition, the heat released from the exothermic reaction between the heat-generating agent and oxygen are supplied to the shape-memory recovery of polyurethane. It was clear that the corrosion resistance evaluations (by electrochemical impedance spectroscopy and scanning Kelvin probe measurements) confirm that the modified shape memory polyurethane have comparable healing efficiencies (eta = 77.3%) and excellent self-healing performances.
KeywordSelf-healing Shape-memory polyurethane Microcapsules Induction heating
DOI10.1016/j.cej.2019.03.027
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[51601188] ; Natural Science Foundation of China[51525903] ; AoShan Talents Outstanding Scientist Program ; Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS09]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000462769600097
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/154954
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorLi, Weihua; Wang, Wei
Affiliation1.Chinese Acad Sci, CAS Key Lab Marine Environm Corros & Biofouling, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China
2.Sun Yat Sen Univ, Coll Chem Engn & Technol, Zhuhai 519082, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Naval Aeronaut Univ, Qingdao Branch, Qingdao 266041, Shandong, Peoples R China
5.Ocean Univ China, Inst Mat Sci & Engn, Qingdao 266100, Shandong, Peoples R China
6.Yantai Univ, Sch Ocean, Yantai 264005, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Fan, Weijie,Zhang, Yong,Li, Weihua,et al. Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating[J]. CHEMICAL ENGINEERING JOURNAL,2019,368:1033-1044.
APA Fan, Weijie,Zhang, Yong,Li, Weihua,Wang, Wei,Zhao, Xiaodong,&Song, Liying.(2019).Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating.CHEMICAL ENGINEERING JOURNAL,368,1033-1044.
MLA Fan, Weijie,et al."Multi-level self-healing ability of shape memory polyurethane coating with microcapsules by induction heating".CHEMICAL ENGINEERING JOURNAL 368(2019):1033-1044.
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