PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Xianliang Li,Bin Gong,Yijie Jin,Zhihao Chen,Wenzhong Yang
In this study, we present a facile strategy to construct a smart PN-Zn-MOF-74 nanocontainer-based coating with outstanding triple functions including the barrier effect, as well as self-healing and self-reporting features. Flattened 2D PN-Zn-MOF-74 nanocontainers were synthesized by decorating the hexagonal boron nitride (h-BN) sheets with a polydopamine (PDA) layer, which was employed to interlink the Zn-MOF-74 nanodevices. The composite nanocontainers were then uniformly dispersed in a waterborne epoxy coating (WEC) and coated onto Q235 mild steel surfaces. Thus, as the Fe 3+ and H + ions were gradually released from the localized corrosion sites, the encapsulated active inhibitors (Zn 2+ and PDA) in PN-Zn-MOF-74 were exchanged and released promptly to form a robust protective film, coating the micro-damaged sites. The EIS results indicated that PN-Zn-MOF-74 with two inhibitors demonstrated a remarkable active corrosion protection performance, with the |Z| 0.01Hz value increasing from 381 Ω cm 2 (blank) to 1389 Ω cm 2 (PN-Zn-MOF-74). However, the cation exchange between Fe 3+ and Zn 2+ can collapse the fluorescent Zn-MOF-74 and form a weak fluorescent compound at the damage sites, achieving the self-reporting ability of the coating. In addition, the coating adhesion test and cross-sectional images showed that the presence of PN-Zn-MOF-74 can effectively strengthen the impermeability of the composite coating, guaranteeing its long-lasting barrier properties. The coating demonstrated a higher |Z| 0.01Hz value (4.91 × 10 9 Ω cm 2 ) despite following 504-h immersion tests, which was over 2 orders of magnitude higher than that of the blank WEC coating. This study provides a simplified and feasible method for augmenting the dependability, practicality, and versatility of anti-corrosion polymer coatings.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Yingdong Cui,Xia Zhao,Zuquan Jin,Xiaohong Ji,Jizhou Duan,Baorong Hou
Organic coatings sustain damage during service inevitably. Accurately locating the damaged site and healing it simultaneously to prevent substrate exposure are significant challenges in extending the service life of metallic structures. This study reports on a smart protective coating with self-reporting and self-healing capabilities. The strategy was realized by embedding polyacrylonitrile (PAN) core-shell nanofibers containing 2-amino-1,3,4-thiadiazole (2-AT) and crystal violet lactone (CVL) into organic coatings. When the PAN@2-AT/CVL coating was damaged, CVL at the damaged site emitted bright blue fluorescence under UV light, while 2-AT could adsorb and form a thin film on the steel surface to inhibit corrosion. Furthermore, the flexibility of the PAN@2-AT/CVL coating was significantly enhanced compared to the blank coating, which helped to reduce the formation of microcracks in the coating. The smart coating was expected to be widely applied for the protection of infrastructure in marine environments, offering new solutions for improving the performance of metallic protection materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Chengbao Liu,Peimin Hou,Bei Qian,Xiaoping Hu
Integrating healable and reportable ability to sustain new-generation smart anticorrosion coatings with long-term durability is highly desirable to accommodate the development of marine industries. Herein, a new type of dual-function coating is designed to fulfill the needs. Through introducing the smart nanocontainers based on the core of HNTs loaded with 8-hydroxyquinoline (8HQ) and the shell made from sodium tripolyphosphate-chitosan (CS) into conventional epoxy matrix, the smart healable and reportable anticorrosion coating on carbon steel (Q235) was developed. Electrochemical impedance spectroscopy (EIS) and salt spray measurement indicated the corrosion inhibition effect of the nanocontainers and healable performance of composite coatings. Benefitting from the 8HQ, the designed waterborne epoxy coating displayed higher low-frequency modulus after 60 days of immersion, confirming the long-term protection ability. Besides, the composite coating exhibited obvious dark-green color at damaged region to timely sense and report the local corrosion in 30 min of immersion tests. This smart coating with sensitive corrosion visualization and well-performed healable properties holds great potential in actual anticorrosion fields.
研究领域:
材料科学
·
腐蚀与防护
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Zhongshao Li,Shuwen Zhao,Zewei Shao,Hanxiang Jia,Aibin Huang,Ping Jin,Xun Cao
Vanadium dioxide (VO 2 ) has already been widely concerned as a thermochromic smart window material. However, the Achilles heel of VO 2 is susceptible to degradation by water and oxygen in the air, which has limited its commercialization. Until now, it has remained unclear what effect water has on the deterioration of VO 2 , hindering the solution to this dilemma. In this work, the degradation mechanism of VO 2 during natural aging was proposed based on density functional theory (DFT) calculation and experimental analysis, and the role of water in the degradation process was discussed in detail. The results showed that water affects the deterioration reaction by influencing the adsorption behavior of oxygen on the VO 2 surface, destroying the dense structure, and participating in the reaction in the form of combined water. This work fills the degradation mechanism gap of VO 2 , helps to design high-performance structures of VO 2 -based smart coatings, and provides theoretical guidance to solve the problem of VO 2 weatherability.
研究领域:
材料科学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Jinke Wang,Yao Huang,Lingwei Ma,Xin Guo,Shanghao Wu,Chenhao Ren,Dawei Zhang
In this work, a smart coating with corrosion-sensing and self-healing dual functions was developed on carbon steel by incorporating the urea formaldehyde (UF) microcapsules loaded with 1,10-phenanthroline (Phen) molecules. Phen as both the corrosion-sensing indicator and corrosion inhibitor was encapsulated into the UF microcapsules via the oil-water (O/W) emulsion in-situ polymerization method. When the coating was damaged, the Phen molecules released from UF/Phen microcapsules would react with the Fe 2+ ions generated from the active anodic corrosion site of the carbon steel substrate, and displayed a prominent red color chelate compound for corrosion-sensing application. During the neutral salt spray test, the corrosion evolution underneath the damaged coating can be rapidly detected within 15 min. Besides, the corrosion activity near the coating scratch can be effectively inhibited due to the adsorption of released Phen on the exposed substrate surface. After 72 h of immersion in 3.5 wt% NaCl solution, the low frequency impedance modulus of the scratched coating containing 10 wt% UF/Phen microcapsules was almost 7 times that of the scratched blank coating. The smart coating can not only achieve timely corrosion sensing, but also suppress the corrosion activity, which is of great importance for practical corrosion protection applications.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 10
·e56569
·
IF 2.7
Jianmin He,Hao Liu,Bingtao Bao,Hanzhong Ren,Weixiang Xu,Qiuyan Luo,Yiting Xu,Jie Li,Birong Zeng,Conghui Yuan,Guorong Chen,Lizong Dai
The marine environment with high humidity and salinity poses higher requests on the service life of traditional polymer coatings therefore, various fillers have been developed for modification. Smart coatings built by fillers that possesses passive barrier and active self-healing properties show considerable prospects in metal protection. Herein, we applied a novel dual-loading strategy to design tannic acid (TA) decorating hydroxyapatite (HAp)/zeolite imidazole framework (ZIF-8) loading 2-amino benzothiazole (2-ABT) composite fillers. The epoxy coating (EP) doped with ABT@ZIF8-HAp@TA (AZHT/EP) presented hydrophobicity and improved mechanical performance on Q215 steel. Moreover, the |Z| f=0.01Hz of AZHT/EP after immersion in saline water for 28 days (6.24 × 10 10 Ω•cm 2 ) is higher than pure EPs with two magnitudes. The anticorrosion mechanism of the AZHT/EP was proposed based on the analysis of corrosion products. To conclude, the dual-loading strategy has considerable potential in designing smart coatings for corrosion protection in harsh environments.
研究领域:
材料科学
·
表面工程
·
腐蚀防护
·
纳米复合材料
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Qi Zhang,Haoqian Wang,Lu Qiu,Xiaoqian Han,Zhihang Wang,Nong Wang
The developed smart coating for water–oil separation, characterized by its mild separation conditions, ease of control, and absence of secondary pollution, holds promising potential for applications in controlled liquid transmission, oil–water separation, smart textiles, and biosensing films. This work focused on synthesizing copolymers that respond to both photon and pH stimuli. Initially, 4-trifluoromethoxy-4′-methacryloxyazobenzene (FMAB) and similar monomers, serving as photon-responsive units with varying carbon chain lengths, were synthesized using different synthetic routes. Such a design approach also aimed to enhance the hydrophobic characteristics of the photoresponsive segments to a certain degree. Theoretically, the impact of the carbonyl position on nucleophilic substitution reactions was investigated through density functional theory (DFT) calculations. These monomers were subsequently copolymerized individually with dimethylaminoethyl methacrylate (DMAEMA), which acts as a pH-responsive unit, using the reversible addition–fragmentation chain transfer (RAFT) technique in a one-step copolymerization process. The polymers were subsequently coated onto glass slides to form films, the contact angles of which could be modulated in response to both light and pH stimuli. To be highlighted, the maximum contact angle change can reach 131° under double stimulation. To ultimately showcase its oil–water separation capabilities, the polymer was combined with a nonwoven fabric to create a membrane. This membrane is capable of reversibly transitioning between hydrophilic–lipophobic and hydrophobic–lipophilic states, demonstrating substantial potential for future advancements in efficient water–oil separation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Yufei Xiong,Yi Guo,Zixiang Zeng,Lijie Dong
Inhibitor-loading nanocontainers are considered as promising materials for smart anticorrosion coatings due to their potential to realize stimuli-responsive self-diagnose and self-healing. However, unsatisfying inhibitor-loading capacity and robustness as well as elaborated design restrict their up-scaling and application in long-term corrosion protection. In this work, cobalt ferrite (CoFe 2 O 4 , CFO) nanospheres with nanoporous structure and robustness are utilized as smart nanocontainers, which are successively coated with polyethyleneimine (PEI), polyacrylic acid sodium (PAAS) and imidazoline quaternary amination salt (IQAS) via electrostatic layer-by-layer assembly (CFO@PEI/PAAS/IQAS). Subsequently, the CFO@PEI/PAAS/IQAS is incorporated with styrene-ethylene-butylene-styrene thermoplastic elastomer (SEBS), forming a smart anticorrosion coating (CFO@PEI/PAAS/IQAS composite coating). The porous structure together with the robustness of CFO facilitate the high inhibitor-loading capacity and the mechanical durability of the coating. Moreover, the CFO@PEI/PAAS/IQAS composite coating exhibits outstanding corrosion resistance and pH-responsive self-healing performance for scratches. This kind of pH-responsive nanocontainers with facile preparation method provides a broad application potential for the next generation of smart anticorrosion coatings.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2019
·
IF 4.959
Xiangping Hao,Shougang Chen,Dong Qin,Mutian Zhang,Wen Li,Jincheng Fan,Chao Wang,Mengyao Dong,Jiaoxia Zhang,Frank Cheng,Zhanhu Guo
Antifouling biocides releasing restricts the longevity of antifouling coatings. Compared with the anchoring state, the releasing behavior of agents is much faster on the voyage, while the biofouling process is tougher. In this work, a series of capsaicin-based pH-triggered polyethylene glycol/capsaicin@chitosan (PEG/CAP@CS), polyvinyl alcohol (PVA)/CAP@CS and alginate (ALG)/CAP@CS multilayer films are prepared with controlling antimicrobial properties in marine environments. There are 23.70, 23.35 and 22.06 ppb CAP releasing from (PVA/CAP@CS) 20 , (PEG/CAP@CS) 20 and (ALG/CAP@CS) 20 films after immersing in pH 4 solutions for 60 days, while only 13.07, 12.95 and 11.55 ppb CAP have been found in alkaline solutions after immersing for the same time, respectively. All these three types of films exhibit extraordinary pH responsive properties. They can control the CAP release at a low level in alkaline solutions, and make the CAP release fast in acid solutions. Moreover, the antibacterial properties against P.aeruginosa are outstanding about 95.84%, 95.0% and 96.91% for (PVA/CAP@CS) 20 , (PEG/CAP@CS) 20 and (ALG/CAP@CS) 20 films, respectively. The bacteriostasis of (ALG/CAP@CS) 20 film keeps 92.73% after 60 days in alkaline solution, which means it is steadily controlled in the marine environment. Although with similar antibacterial properties to those of (PEG/CAP@CS) 20 film, (PVA/CAP@CS) 20 film displays the maximum decrease with about 92% in acid solution after 60 days. The ALG/CAP@CS film with the best-controlled release performance and long-term antibacterial properties provides novel guidance for developing new antifouling coatings application in the marine environment.
研究领域:
海洋生物学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chengbao liu,Li Cheng,Lanyue Cui,Bei Qian,Rongchang Zeng
Polymeric coatings with long life, strong environmental adaptability and high durability are of great significance for practical applications. This work presents a facial strategy to construct a smart nanocomposite coating with excellent shielding, corrosion self-diagnosing and self-repairing functions by integrating nanocontainers into epoxy resin. The nanocontainers were synthesized through decorating the hydroxyapatite sheets with zeolitic imidazolate frameworks (HA-ZIF), which were employed to encapsulate corrosion probe (Phenanthroline, Phen). With the occurrence of localized corrosion, Phen molecules could be timely released and reacted with the metal ions to form conspicuous red color at damaged sites, achieving real time corrosion diagnosing function. Given the stimulus responsive property of ZIF, the corrosion propagating process can be significantly inhibited by the released benzimidazole. As contrast of the traditional nanocontainers applied in anticorrosion coating, the inhibitors were used directly to synthesis the HA-ZIF nanocontainer rather than subsequent loading, which greatly improved inhibitors content in nanocontainers. Moreover, the impermeability of composite coating has been remarkably enhanced by the presence of HA sheets, ensuring the long-term protective performance. Importantly, the integrating multi functions in one coating is realized in the ingeniously designed nanocontainers. It is envisioned that the facial and feasible strategy provides insights in improving the longevity, functionality and reliability of protective coatings.
研究领域:
材料科学
·
腐蚀防护
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
You Wu,Yangyang Duan,Juan Qiu,Xiang Gao,Houyi Ma
The aim of this work is to develop an eco-friendly pH-responsive intelligent coating with long-term corrosion protection by a convenient method. Herein, an eco-friendly and long-term pH-responsive intelligent anti-corrosion coating (BTA-CaCO 3 @TA coating) is fabricated through the addition of a hydrophilic pH-responsive release material (BTA-CaCO 3 @TA microspheres) into a waterborne epoxy resin coating. The electrochemical impedance spectroscopy results indicated that BTA-CaCO 3 @TA microspheres could endow the coating with long-term corrosion protection. The |Z| f =0.01Hz values of the BTA-CaCO 3 @TA coating after 130 days of immersion were still higher than those of the pure waterborne epoxy resin coating at the beginning of immersion. The excellent long-term protection performance was related to the good dispersibility of BTA-CaCO 3 @TA microspheres in the waterborne coatings, the TA conversion film and the BTA inhibitor protection film, which formed on the steel surface in situ. This synergistic strategy demonstrated its future application for protecting metals from corrosion.
研究领域:
材料科学
·
腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Shuai Zhang,Yin Zhang,Yanping Huang,Bingqun Lin,Shengjie Ling,Changtong Mei,Mingzhu Pan
With the acceleration of urbanization, energy-efficient, comfortable, and lightweight materials have been growing widely used. An ideal real-time monitoring strategy integrated with prominent fire sensing capability, flame retardancy, and embedded in communication network Internet of Things (IoT) remains a huge concern. Here, we develop a sensitive and durable fire alarm intelligent coating strategy based on a metal-insulator transitional Ti 3 O 5 via a layer-by-layer assembly (LBL). We elucidate the atomic structure, electronic band, and orbital structure of Ti 3 O 5 correlated from the charge-ordered β-phase (electrical insulation state) to valence-delocalized of α-phase (electrical conduction state) during switchable temperature by density functional theory (DFT) calculations. Accordingly, a thermally activated electron jump among the localized states facilitates the early fire alarm with a sensitive fire response time (∼3.78 s) and an excellent response repeatability. Moreover, the fire alarm coating also performs the remarkable flame retardancy, smoke suppression and weatherability. This work provides a promising routine to realize the condensed matter as advanced fire sensors, offering insights into fire alarm towards smart phones, cloud service, and a central control system through IoT for fire prevention and protection application.
研究领域:
材料科学
·
消防工程
·
电子与通信技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）