ACS Applied Polymer Materials
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2022
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IF 4.855
Pingjing Mo,Ziyue Hu,Zijie Mo,Xiang Chen,Jian Yu,Mohamed S. Selim,Rong Sun,Jianbin Xu,Xiaoliang Zeng,Zhifeng Hao
Anticorrosive coatings are extensively investigated as a potential solution to prevent or at least retard metal corrosion occurrence. However, the actual breakthrough is still hampered by the risk of barrier properties loss because of the local failure of the coating. Self-healing coatings can effectively repair microcracks, but outstanding self-healing behavior is always accompanied by poor self-cleaning ability. Herein, we report a series of poly(dimethylsiloxane) (PDMS) modified with a terephthalic aldehyde (TA)-polyurea (PDMS-TA-PUa) copolymer with a double reversible dynamic bond crosslinking network structure. The PDMS-TA-PUa coating exhibits fast and re-recycled self-healing behavior that heals cracks within 40–50 min at room temperature. The fast self-healing property is attributed to the dynamic nature of the imine bonds and hydrogen bonds in polymer networks. The PDMS-TA-PUa coating also shows great self-cleaning and anticorrosive ability, due to high hydrophobic, low surface energy, and high corrosion potential. Our work gives an insight into the design and preparation of multifunctional coating material with excellent anticorrosion performance, fast self-healing, and self-cleaning properties.
研究领域:
材料科学
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化学工程
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腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
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IF 9.4
Xue Fu,Haixu Dou,Yong Fan,Jianing Xu,Hui Qi,Chengchun Zhang,Lingjie Song,Jie Zhao,Luquan Ren,Weihua Ming
Great attentions have been paid to anticorrosion coatings with self-healing performances to enhance its reliability and protection period, but massive challenges still remain for developing a coating with selectively triggered and accurately controllable self-healing behaviors. Herein, by integrating lamellar graphene oxide (GO) into a polycaprolactone (PCL) nanofiber loaded with 8-hydroxyquinoline (8HQ) corrosion inhibitors, a composite coating with precisely controllable self-healing capabilities is developed. The coating defects can be remotely and accurately repaired under near-infrared (NIR) light irradiation within a very short time. Notably, the precisely controllable defect recovery even within a minimal region of ∼0.03 cm 2 can be achieved, without causing pristine performance recession of irrelevant regions. The embedded GO can work both as efficient photothermal conversion materials, and yield “labyrinth effect” to enhance the passive barrier against corrosive media. Moreover, encapsulated corrosion inhibitors 8HQ can be rapidly released into acid/alkaline microregions in a corrosive-triggered manner, to form self-assembly protective layers and offer instant safeguarding for damaged sites. The integrated precise self-healing system enables extremely high corrosion inhibition efficiency exceeding 98.6 %. This work illustrates a feasible approach for combining remotely precise self-healing and active/passive enhanced passive barrier, presenting perspective potential in practical engineering anticorrosion applications or other controllable micro-reaction function surfaces.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
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2021
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IF 3.266
Yuhua Dong,Kexin Wu,Yuanyuan Yin,Chundong Geng,Qiong Zhou
PPy@PDA nanoparticles , prepared by varying ratios of PPy and dopamine hydrochloride, could be used as near infrared (NIR)-absorbing photothermal agents given that the UV–vis–NIR light absorption spectra showed a broad absorption band at 800–900 nm. A NIR-induced shape memory-assisted self-healing epoxy resin coating was obtained, and its shape memory effect was investigated by 808 nm NIR irradiation. Results indicated that the addition of PPy@PDA nanoparticles improved the shape recovery behavior of the composite. The self-healing property of the coatings was investigated by electrochemical test. Results of linear sweep voltammetry (LSV) and electrochemical impedance spectra (EIS) verified that the coating with 5 wt% PPy@PDA nanoparticles had a much better light-induced shape memory effect, self-healing performance, and protective capability than those of other contents of PPy@PDA nanoparticles. Moreover, the shape memory effect of the coating should be affected by the corrosion product of the metallic substrate.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhiqiang Fang,Yangkai Xiong,Lei Huang,Jipeng Li,Daxiong Hu,Qitong Mao,Hao Jiang,Xuewei Tang,Panpan Tang,Zheng Li,Guoqing Wang
Polymer coatings are inherently susceptible to deformation and irreversible damage when they are subjected to external forces during service. Self-healing coatings integrated with exceptional mechanical robustness and corrosion resistance are essential for industrial applications but have been deemed challenging. Here, we present a NIR-triggered self-healing coating by combining a toughness epoxy network with melanin-modified silica (MMS). Moreover, to investigate the impact of pore size and porosity of silica on the corrosion protection performance, three types of various silica particles are selected as building blocks. The melanin-modified fumed silica/epoxy coatings demonstrate superior elongation (275 %), outstanding tensile strength (5.31 MPa) and high toughness (7.37 MJ·m 3 ). Moreover, the introduction of the MMS can not only improve the anticorrosion performance (|Z| 0.01 Hz value of 1.24 × 10 10 Ω·cm 2 ) but also realize fast photo-thermal repair (60 s). Our strategy furnishes a universal layout prototype for the manufacture of robust self-healing coatings with a scalable and cost-effective preparation method.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
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IF 3.7
Xichang Shan,Zhongli Zou,Zhijuan Mi,Kunmin Tong,Chunping Hou
This work presents the development of a novel nanotube (S12HNTS-T-P) that is coated with polyethylenimine (PEI) and internally loaded with a corrosion inhibitor (thiourea) utilizing vacuum negative pressure and electrostatic adsorption methods. A smart self-healing coating with self-repairing properties was fabricated on the basis of S12HNTS-T-P. Bis[3-(triethoxysilyl)propyl]tetrasulfide (Si69), a widely used organosilane coupling agent, provides stability and corrosion resistance. The integration of S12HNTS-T-P into Si69 significantly enhances the coating’s corrosion resistance and self-healing capabilities. To further evaluate the performance of the smart self-healing coating, a control group comprising Si69 coatings without S12HNTS-T-P was established. Electrochemical tests revealed that the coating with 3 wt % S12HNTS-T-P exhibited markedly superior corrosion resistance compared to those with 0, 1, and 5 wt % S12HNTS-T-P. In comparison to the control group, the coating with 3 wt % S12HNTS-T-P demonstrated a 99.4% increase in corrosion inhibition efficiency after 72 h of immersion in a 3.5 wt % NaCl solution. Scanning electron microscopy (SEM) and immersion tests further corroborated that the smart self-healing coating exhibited self-repairing behavior when subjected to external scratching stimuli. Simulation results indicated that thiourea released from the nanotubes can adsorb and form a protective film at the scratch sites, effectively repairing the coating’s defects. The exceptional corrosion resistance and high healing rates of the smart self-healing coating suggest that S12HNTS-T-P plays a pivotal role in enhancing the corrosion protection of zinc.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Wenhui Ji,Xiaohong Ji,Lin Cao,Qing Yu,Wei Wang
Here, we developed a novel type of composite coating with excellent self-healing and anti-corrosion properties, activated by photothermally responsive nanofillers. The photothermal heterojunction Ag 2 S@Ti 3 C 2 was synthesized and functionalized with a silane coupling agent, and subsequently incorporated into an epoxy resin containing Diels-Alder (DA) bonds. It is found that the heterojunction enhances the light absorption, increases the number and lifetime of photogenerated electron-hole pairs, and facilitates the passage of photogenerated charges through the heterojunction interface, thereby reducing interface transfer resistance and releasing heat. Under irradiation with 808 nm near-infrared light, the photothermal effect of Silane-Ag 2 S@Ti 3 C 2 triggers molecular chain movement and dynamic DA bond reconstruction, thereby repairing scratches in the coating. Surface characterization and electrochemical tests indicate that the coating containing 1 wt% Silane-Ag 2 S@Ti 3 C 2 nanofillers exhibits significant self-healing and anti-corrosion properties. The self-healing rate of the coating approached nearly 96.00 %. After five self-healing cycles, the protective performance of the initial immersion stage was effectively restored, the self-healing rate remained at about 90.00 %. Even after 60 d of immersion, the low-frequency impedance modulus remained above 10 8 Ω·cm 2 . This study presents a novel strategy for the development of multi-cycle self-healing coatings utilizing photothermal effects.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Corrosion Communications
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2021
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IF 0
Zhengyu Jin,Zilong Zhao,Tong Zhao,Hongwei Liu,Hongfang Liu
In this work, a novel graphene oxide (GO)/SiO 2 -based nanocontainer loaded benzotriazole (BTA) was synthesized by a one-step method. The self-healing epoxy resin coating with high corrosion resistance based on GO-SiO 2 -benzotriazole (GS-BTA) nanocontainers was prepared. Electrochemical impedance spectroscopy (EIS) and wire beam electrode impedance scanning (WBE-EIS) measurements were used to evaluate the long-term anticorrosion and self-healing properties of coatings, respectively. Results indicate that the long-term corrosion resistance of GS-BTA coating is largely improved compared with the pure epoxy coating from EIS results. And the impedance of GS-BTA coating changes little after 48 d of testing. The impedance value at 0.01 Hz for pure EP coating has a fast decrease with time, and the value is 7.7 × 10 6 Ω cm 2 on the 48th day. The impedance values of GS-BTA/EP coating change little with time, and the value increases by three orders of magnitude on the 48th day compared with the EP coating. The impedance distributions of WBE suggest that the GS-BTA coating has a good self-healing ability in the artificial scratch area. The self-healing ability derives from the release of BTA and its adsorption at anodic corrosion sites.
研究领域:
材料科学
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腐蚀防护
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电化学
✓ 已验证
DOI
COMPOSITES COMMUNICATIONS
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2018
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IF 0
Nan Zheng,Lei Qiao,Jie Liu,Jiufu Lu,Wenge Li,Chunmei Li,Qing Liu,Ying Xue,Qiuyu Zhang
The microcapsules of multilayered shells structure loaded with dicyclopentadiene (DCPD) were prepared via one-part strategy in Pickering emulsions stabilized by hydrolyzed poly(glycidyl methacrylate) (PGMA) nanoparticle . The target microcapsules had polyurethane (PU) inner shell layer, phenol-formaldehyde (PF) outer shell layer, and PGMA outermost layer. Meanwhile, in order to compare with the target microcapsules, the microcapsules of double layered shells (Sample 1) were both acquired. Size distribution, morphology, chemical structure and reaction heat of the capsules were studied by particle size analysis , scanning electron microscopy (SEM), fourier transform infrared spectra (FTIR), nuclear magnetic resonance (NMR), and differential scanning calorimetry (DSC). It was found that the ingredients of PF, PU and PGMA were contained in the target microcapsules of multilayered shells, and the encapsulated core materials still kept high chemical reactivity. The resistant properties against thermal and solvent were evaluated by thermogravimetric analysis (TGA) and the solvent immersion test. When the IPDI content was suitable, the multilayered shells microcapsules (Sample 2, 3) possessed excellent thermal and solvent resistances comparing with Sample 1. In addition, the coatings embedded Sample 3 have displayed good self-healing performance by SEM, electrochemical impedance spectroscopy (EIS), salt immersion test and the tensile analysis of tapered double cantilever beam (TDCB) fracture specimens.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2021
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IF 8.067
Xiaohong Ji,Wei Wang,Xia Zhao,Lifei Wang,Fubin Ma,Yanli Wang,Jizhou Duan,Baorong Hou
In this research, core−shell electrospun fibers loaded with the shell of cellulose acetate and the core of oleic acid and alkyd varnish resin were synthesized and used within poly(dimethyl siloxane) (PDMS) to prepare self-healing and pH-responsive coatings for a steel substrate. The morphology of the electrospun fibers was characterized by scanning electron microscopy, transmission electron microscopy and confocal fluorescence microscopy. Thermo gravimetric analysis and Fourier transform infrared spectroscopy revealed that the self-healing agents were loaded successfully with a loading rate of 2.9%. The properties of the fiber-PDMS composite coating were characterized by water contact angle measurements, mechanical tests, electrochemical impedance spectroscopy, and scanning Kelvin probe. Results show that the maximum self-healing efficiencies of the fiber-PDMS coating in alkaline and acidic solution are 95.96% and 97.04%, respectively. The composition of the self-healing agents at the damaged part of the coating was verified by an infrared mapping test and using an energy dispersive spectrometer. In addition, the sandpaper abrasion test shows the hydrophobic effect of fiber-PDMS coating remains above 88.2% and decreases slightly through the addition of abrasion cycles. This research can pave the way for the industrial applications of pH-responsive self-healing coatings.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2019
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IF 3.834
Xiaohong Ji,Wei Wang,Weihua Li,Xia Zhao,Ang Liu,Xin Wang,Xiaoying Zhang,Weijie Fan,Yanli Wang,Zhaoxia Lu,Shuan Liu,Hao Shi
pH-responsible self-healing core-shell electrospun nanofibers encapsulating oleic acid (OA) and benzotriazole (BTA) corrosion inhibitors were synthesized and added into a coating material for the corrosion protection of carbon steels. The shell of electrospun nanofibers were poly(vinyl alcohol) (PVA), and the healing agents OA and BTA were used as core materials to reseal a damaged region. The average nanofiber diameters was 350 nm, and the surface is smooth, without any bead structure. OA plays a critical role on corrosion inhibitor in 3.5% alkaline sodium chloride solution and the maximum inhibition efficiency was 86.0% after 10 days immersion. BTA works in 3.5% acidic sodium chloride solution and the maximum inhibition efficiency was 83.4% after 5 days immersion. The anti-corrosion and self-healing capability of core-shell coating were evaluated through scanning electron microscopy, transmission electron microscopy, confocal laser fluorescence microscopy, Fourier transform infrared spectroscopy, electrochemical measurement technology, thermo gravimetric analysis, and material test system rack. Results showed that core-shell spinning fibers with corrosion inhibitors at different concentrations were prepared successfully. The core-shell fibers released the inhibitors to form an OA protective film and a BTA passivation film on the exposed metal surface. Electrochemical measurement monitored specifically the self-healing properties of the coating. These result potentially have important value for the design and research of self-healing materials in the future.
研究领域:
材料科学
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腐蚀与防护
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电化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
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IF 2.829
Yugao Guo,Jie Wang,Dawei Zhang,Tao Qi,Guo Liang Li
Utilization of self-healing nanocontainers with corrosion inhibitors is an efficient strategy for protecting metals from corrosion. However, self-healing coatings require the rapid release of these corrosion inhibitors to achieve an on-demand barrier on metal surface while avoiding unwanted leakage before the protective coatings are damaged. Herein, well-defined ZIF-7@BTA nanoparticles with approximately 30 wt% benzotriazole inhibitors are prepared via a ligand exchange approach. The as-synthesized ZIF-7@BTA nanoparticles can rapidly release the BTA inhibitor onto scratched areas on metal surfaces, providing 99.4% inhibition efficiency under acidic conditions. Moreover, only limited inhibitor of BTA molecules was leached out (less than 4%) in a neutral environment. Furthermore, the ZIF-7@BTA nanoparticles were further distributed in the polymer matrix to prepare the self-healing anticorrosion coatings for corrosion resistance enhancement in an acidic environment. Electrochemical impedance spectroscopy (EIS) analysis was utilized to characterize the corrosion resistance.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Mingmao Yu,Jing Feng,Qian Yang,Zhi Dang,Lijuan Zhang
Organosilane, with functional organic groups attached to inorganic silicon atoms, exhibits excellent passivation performance for pyrite. However, a considerable number of micro-cracks will gradually appear on the surface of passivation film under long-term corrosion of oxidizing medium, resulting in a significant decrease of passivation effect. To improve the stability and long-term performance of organosilane coating, a novel passivator (PT-ATP@HQ) with self-healing function was prepared to inhibit the oxidation of pyrite. We chose 3-mercaptopropyltrimethoxysilane (Prop-SH) and tetraethoxysilane (TEOS) as the host coating (PT), and attapulgite clay (ATP) loaded with 8-hydroxyquinoline (8-HQ) was used to endow the coating with better passivation and self-healing performance. The electrochemical and chemical leaching results showed that the addition of ATP@HQ greatly improved the passivation performance of PT coating. The passivation efficiencies of total Fe and SO 4 2− reached to 88.1% and 79.2%, respectively. We also found that the protective capability of the scratched PT-ATP@HQ coating can be recovered automatically through 8-HQ release from ATP. The passivation and self-healing mechanisms were investigated by FT-IR, XPS , 29 Si NMR, and other characterization methods, which were as follows: firstly, the organosilanes hydrolyzed to form highly active silanol groups, then dehydration condensation reaction occurred between silanol molecules and ATP@HQ to obtain cross-linked network structure connected by Si– O –Si bonds. After that, Si–OH groups reacted with the hydroxyl groups of pyrite to form Fe– O –Si bonds, thereby an inert and dense passivation film attached to the surface of pyrite. Once the passivation film is locally damaged, 8-HQ will automatically release to repair the cracks.
研究领域:
化学工程
·
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）