Article
Chemistry, Applied
Panhua Li, Wanchun Guo, Zhang Lu, Jifeng Tian, Xueai Li, Haiyan Wang
Summary: UV-responsive single-microcapsule self-healing system with SiO2/ZnO hybrid shell shows great potential in repairing microcracks on spacecraft polymeric composite coatings, extending their service life and reliability. The stable inorganic SiO2 shell enhances the stability and UV shielding performance of the microcapsules, preventing premature curing of the epoxy resin core in the UV-rich space environment.
PROGRESS IN ORGANIC COATINGS
(2021)
Review
Chemistry, Multidisciplinary
Tiwa Yimyai, Daniel Crespy, Michael Rohwerder
Summary: Organic coatings are widely used for protecting metals against corrosion, with self-healing as a new research focus. Understanding the reactions of coatings to corrosion-induced stimuli, as well as the release and spreading of self-healing agents, is crucial for designing high-performance self-healing coatings.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Yuye Zhu, Min Chen, Limin Wu
Summary: The new self-healing coating utilizes a UV-responsive microsphere system to achieve dual repair modes, with high efficiency and full utilization rate of the microspheres.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Fei Yu, Hengyu Feng, Zhen Yan, Xudong Liu, Yu Liu, Linghan Xiao
Summary: Graphene oxide microcapsules containing light-curing epoxy resin were fabricated through a self-assembling process based on Pickering emulsions. The chemical stability of the microcapsules was improved through chemical stitching of GO nanosheets, resulting in epoxy resin content above 85 wt%. The energy-efficient process generated minimal waste and residuals. Moreover, the microcapsules' fracture and reactions under UV light irradiation on hot-dip galvanized steel surface contributed to the self-healing property and protective effect of the self-repairing coatings.
Article
Chemistry, Applied
Panhua Li, Zhang Lu, Kaixuan Ma, Gaofeng Zou, Liang Chang, Wanchun Guo, Kesong Tian, Xueai Li, Haiyan Wang
Summary: The study developed UV-triggered self-healing SiO2/PDA hybrid microcapsules with enhanced UV-shielding ability and compatibility for epoxy resin coating, showing great potential in repairing microcracks on spacecraft and improving coating reliability. The UV absorber PDA in the microcapsules plays a crucial role in protecting the core material from undesirable UV-cured behavior before self-repairing. The enhanced UV-shielding ability and compatibility of the microcapsules contributed to their outstanding self-repairing performance under UV irradiation.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Fei Yu, Hengyu Feng, Jinpeng Leng, Hongying Xue, Ziyi Zhong, Zhen Yan, Xudong Liu, Yu Liu, Linghan Xiao
Summary: This study designs a self-healing polymer composite based on photo-responsive technology, which utilizes microcapsules embedded in a waterborne epoxy matrix to achieve crack repair and maintain solidification.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Applied
Nan Zheng, Jie Liu, Yuhang Wang, Chunmei Li, Qiuyu Zhang
Summary: A self-healing coating utilizing the synergistic action of ultraviolet light and moisture has been successfully developed. By embedding CS-RGO microcapsules in the resin matrix, the mechanical properties and anti-corrosion properties of the matrix are improved, showing great potential for various industries, especially in the field of over-water construction.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Engineering, Environmental
Zhenxiao Bi, Fangjian Gao, Man Liu, Ruiyu Zhang, Ruolin Liu, Gan Cui, Jing Xu
Summary: Developing a multifunctional self-healing coating with orderly distributed microcapsules can improve the anti-corrosion performance of coatings, seal scratches, and enhance corrosion resistance. The 15 wt% ODM coating exhibited the best anti-corrosion performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Dawei Sun, Yan Zheng, Mingzhang Lan, Ziming Wang, Suping Cui, Jinglei Yang
Summary: Metal shell microcapsules containing liquid HMDI were successfully synthesized by plating a layer of Ni-P alloy on microcapsules surfaces, improving their robustness. The final microcapsules had a three-layered structure with a shell strength of 28.5 MPa, remaining stable in various solvents and showing satisfactory performance in salty water.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Li Cheng, Chengbao Liu, Haichao Zhao, Liping Wang
Summary: The study introduces a novel photothermal responsive composite epoxy system with hierarchical damage reporting and healing capabilities, achieved by loading mesoporous polydopamine nano-spheres with crystal violet lactone and phenanthroline. The coating damage is indicated by intensified fluorescent signal and can be rapidly closed with NIR irradiation. Corrosion probes released from the coating can chelate with Fe2+ ions from localized corrosion, producing a distinct visual red color to report corrosion pits and resist corrosion. The proposed smart coatings have potential applications in achieving hierarchically self-reporting and self-repairing function for general coating defects and substrate corrosion.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Yuye Zhu, Mengdi Liu, Min Chen, Limin Wu
Summary: In this study, a novel strategy using a blue light-responsive microsphere system is proposed for autonomous self-healing coatings. The system generates free radicals under blue light irradiation, which are irreversibly consumed by encapsulated polymerization inhibitors. This allows the system to release healing agents through microsphere collapses, promoting the development of photo-responsive self-healing coatings under weak stimuli.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Dhawal R. Thakare, Thao M. Xiong, Ian L. Flueck, Ephraim G. Morado, Steven C. Zimmerman, Nancy R. Sottos
Summary: This work reports pH-responsive microcapsules with triggered release over a wide range of acidic pH values, which are robust enough to be incorporated in commercial solvent-based epoxy coatings. The degradation and release kinetics of the microcapsules are quantified at various pH levels. Inhibition efficiencies up to 70% are achieved in acidic saltwater solutions.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Qi Wang, Wei Wang, Xiaohong Ji, Xiangping Hao, Chengcheng Ma, Wei Hao, Xinglinmao Li, Shougang Chen
Summary: The core-shell electrospun nanofibers synthesized by a coaxial electrospinning method can be used as additives for self-healing coatings, showing good morphological stability and pH-sensitive ability to significantly enhance the tensile properties of the coating. The repair characteristics of tannic acid and tung oil under different conditions can complement each other and strengthen the self-healing ability of the coating.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Kaiyun Wu, Ziyue Wei, Yuan Dong, Yongbin He, Hui Liu, Guanqing Sun, Jing Luo
Summary: This study comprehensively investigates the influence of the preparation process and shell formation materials on self-healing microcapsules. The SR UV method is found to be more suitable for preparing microcapsules with high core content and spherical core-shell morphology. The particle size distribution of microcapsules is related to the shear strength during initial emulsion preparation, and the introduction of shell-formation materials can lead to structural transformations. Coatings based on microcapsules exhibit excellent self-healing properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Conghuan Ma, Jiahong Li, Jianyu Wang, Da Bian, Yongwu Zhao
Summary: In this study, microcapsules with repairing ability were prepared and added to an epoxy resin matrix to create a self-healing coating. The results show that the coating has excellent self-healing ability, effectively inhibiting the progress of metal corrosion.
POLYMER ENGINEERING AND SCIENCE
(2022)