Cargando…

Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating

Dual component microencapsulated hydrophobic amine and microencapsulated isocyanate were designed and fabricated for self-healing anti-corrosion coating. In this system, novel hydrophobic polyaspartic acid ester (PAE) and isophorone diisocyanate (IPDI) were microencapsulated respectively with melami...

Descripción completa

Detalles Bibliográficos
Autores principales: Guo, Maolian, Li, Wei, Han, Na, Wang, Jianping, Su, Junfeng, Li, Jianjie, Zhang, Xingxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415046/
https://www.ncbi.nlm.nih.gov/pubmed/30966353
http://dx.doi.org/10.3390/polym10030319
_version_ 1783403100642476032
author Guo, Maolian
Li, Wei
Han, Na
Wang, Jianping
Su, Junfeng
Li, Jianjie
Zhang, Xingxiang
author_facet Guo, Maolian
Li, Wei
Han, Na
Wang, Jianping
Su, Junfeng
Li, Jianjie
Zhang, Xingxiang
author_sort Guo, Maolian
collection PubMed
description Dual component microencapsulated hydrophobic amine and microencapsulated isocyanate were designed and fabricated for self-healing anti-corrosion coating. In this system, novel hydrophobic polyaspartic acid ester (PAE) and isophorone diisocyanate (IPDI) were microencapsulated respectively with melamine-formaldehyde (MF) as shell via in situ polymerization. To reduce the reaction activity between shell-forming MF prepolymer and PAE, another self-healing agent tung oil (TO) was dissolved in PAE and subsequently employed as core material. With field-emission scanning electron microscopy (FE-SEM) and optical microscopy (OM), the resultant microencapsulated IPDI with diameter of 2–5 μm showed a spherical shape and smooth surface. More importantly, both the morphology and microstructure of microencapsulated PAE enhanced significantly after addition of TO. Fourier transform infrared spectra (FTIR) analysis confirmed the molecular structure of chemical structure of the microcapsules. Thermal gravimetric analysis (TGA) indicated that both kinds of microcapsules exhibit excellent thermal resistance with the protection of MF shell. Furthermore, the self-healing epoxy coating system containing microencapsulated IPDI and microencapsulated PAE/TO was prepared and investigated. From the micrographs of true color confocal microscope (TCCM), the self-healing coating containing dual-component microcapsules showed excellent self-repairing performance compared to single microencapsulated IPDI system, and the optimal content of dual-component microcapsules in epoxy coating was 20 wt % approximately.
format Online
Article
Text
id pubmed-6415046
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64150462019-04-02 Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating Guo, Maolian Li, Wei Han, Na Wang, Jianping Su, Junfeng Li, Jianjie Zhang, Xingxiang Polymers (Basel) Article Dual component microencapsulated hydrophobic amine and microencapsulated isocyanate were designed and fabricated for self-healing anti-corrosion coating. In this system, novel hydrophobic polyaspartic acid ester (PAE) and isophorone diisocyanate (IPDI) were microencapsulated respectively with melamine-formaldehyde (MF) as shell via in situ polymerization. To reduce the reaction activity between shell-forming MF prepolymer and PAE, another self-healing agent tung oil (TO) was dissolved in PAE and subsequently employed as core material. With field-emission scanning electron microscopy (FE-SEM) and optical microscopy (OM), the resultant microencapsulated IPDI with diameter of 2–5 μm showed a spherical shape and smooth surface. More importantly, both the morphology and microstructure of microencapsulated PAE enhanced significantly after addition of TO. Fourier transform infrared spectra (FTIR) analysis confirmed the molecular structure of chemical structure of the microcapsules. Thermal gravimetric analysis (TGA) indicated that both kinds of microcapsules exhibit excellent thermal resistance with the protection of MF shell. Furthermore, the self-healing epoxy coating system containing microencapsulated IPDI and microencapsulated PAE/TO was prepared and investigated. From the micrographs of true color confocal microscope (TCCM), the self-healing coating containing dual-component microcapsules showed excellent self-repairing performance compared to single microencapsulated IPDI system, and the optimal content of dual-component microcapsules in epoxy coating was 20 wt % approximately. MDPI 2018-03-14 /pmc/articles/PMC6415046/ /pubmed/30966353 http://dx.doi.org/10.3390/polym10030319 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Guo, Maolian
Li, Wei
Han, Na
Wang, Jianping
Su, Junfeng
Li, Jianjie
Zhang, Xingxiang
Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title_full Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title_fullStr Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title_full_unstemmed Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title_short Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating
title_sort novel dual-component microencapsulated hydrophobic amine and microencapsulated isocyanate used for self-healing anti-corrosion coating
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415046/
https://www.ncbi.nlm.nih.gov/pubmed/30966353
http://dx.doi.org/10.3390/polym10030319
work_keys_str_mv AT guomaolian noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT liwei noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT hanna noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT wangjianping noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT sujunfeng noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT lijianjie noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating
AT zhangxingxiang noveldualcomponentmicroencapsulatedhydrophobicamineandmicroencapsulatedisocyanateusedforselfhealinganticorrosioncoating