COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2021
·
IF 4.539
Song Duan,Baojie Dou,Xiuzhou Lin,Shixiong Zhao,Wilfred Emori,Jilin Pan,Hao Hu,Hang Xiao
In this study, uniform sized ZIF-8 was synthesized by microemulsion method, and a series of ZIF-8 modified epoxy coatings with different mass fractions were successfully prepared. EIS analysis revealed the improved anti-corrosion performance of the modified epoxy coating with increasing mass fraction of ZIF-8 fillers, and this was confirmed by the results of the salt spray and adhesion tests . In addition, the tensile strength and friction properties of the epoxy coating have also been greatly improved. These phenomena were explained by the chemical cross-linking between ZIF-8 fillers and epoxy. The chemical cross-linking increased both the cross-linking density and the barrier performance of the epoxy coating, consequently improving its anti-corrosion and mechanical properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
CORROSION SCIENCE
·
2020
·
IF 6.479
Cheng Li,Yuan Li,Xiao Wang,Sicheng Yuan,Dan Lin,Yanji Zhu,Huaiyuan Wang
It is difficult for ordinary coatings to meet the long-term anti-corrosion requirements of modern industry. Incorporating high-performance fillers into those coatings is considered as an effective way to solve the problem. Herein, a new hydrophobic fluoro-substituted polyaniline (PFAN) filler with high-performance was successfully synthesized. Results showed that the filler synthesized at 0 ℃ exhibited nearly two-dimensional micro-fibrous morphology and good solubility in some common solvents. Results also revealed that the fabricated filler could passivate iron and prevent electrolyte penetration. All these advantages endowed the epoxy coating containing 3 wt% PFAN with exceptional long-term anti-corrosion performance.
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
PROGRESS IN ORGANIC COATINGS
·
2020
·
IF 4.469
Jian Lv,Chenxi Zhu,Haonan Qiu,Jing Zhang,Changdong Gu,Jie Feng
In severely cold regions, it is very difficult to prevent the formation of ice on solid surfaces, even on superhydrophobic (SH) surfaces. Compared with anti-icing surfaces, icephobic surfaces are more useful in practice. In this work, a traditional epoxy coating was modified by using maleic anhydride (MAH) as a crosslinking agent, in addition to filling a small amount of epoxy resin grafted with fluorine containing chains (FEP). The wettability and the mechanical properties of the modified coating, as well as the adhesive strength of ice on the coating surface and the stability of the icephobic properties of the coating, were systematically studied. The results showed that the modified coating surface became more hydrophobic and the force required to remove ice from the surface was less than that needed for removing on the unmodified coating surface. Furthermore, the modified coating has excellent mechanical properties. After sanding with abrasive paper, the unmodified coating surface is more hydrophilic, whereas the modified coating surface retains its hydrophobicity. X-ray photoelectron spectroscopy (XPS) indicates that compared with crosslinking by traditional polyamides, crosslinking using MAH greatly reduces the number of polar groups on the coating surface. The FEP introduction further reduces the free energy of the coating surface. As a result, the modified epoxy coating exhibits excellent icephobic performance. This study will be helpful for the design of icephobic epoxy coatings for use in practical applications. For example, it may make the de-icing on the underside of trains running in cold regions becomes more easily.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2015
·
IF 6.723
Lin Gu,Shuan Liu,Haichao Zhao,Haibin Yu
Dispersion of graphene in solvents is of crucial importance toward its practical applications. In this study, using a water-soluble carboxylated aniline trimer derivative (CAT–) as a stabilizer, the commercial graphene can be stably dispersed in water at high concentration (>1 mg/mL) via strong π–π interaction that was proved by Raman and UV–vis spectra. Moreover, the CAT–-functionalized graphene sheets (G-CAT– hybrid) exhibited high conductivity (∼1.5 S/cm), good electroactivity and improved electrochemical stability. The addition of well-dispersed graphene into waterborne epoxy system (G-CAT–/epoxy) remarkably improved corrosion protection compared with pure waterborne epoxy coating, based on a series of electrochemical measurements performed under 3.5% NaCl solution. This significantly enhanced anticorrosion performance is mainly due to the improved water barrier properties derived from highly dispersed graphene nanosheets in the epoxy coating.
研究领域:
材料科学
·
化学工程
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Xiaomeng Li,Shuxue Zhou
The application of MXene in anticorrosion coatings has attracted recent research interest. Limited information exists on the effect of MXene functionalization on anticorrosion performance. In this work, epoxy-functionalized Ti 3 C 2 nanosheets (E-Ti 3 C 2 ) were prepared by grafting with (3-glycidyloxypropyl) trimethoxysilane and incorporated into solvent-borne epoxy coatings with low mass fractions of 0.3 wt%, 0.5 wt% and 0.7 wt%. The anticorrosion properties of the coatings were investigated by electrochemical impedance spectroscopy and salt spray tests. The highest impedance was achieved for the 0.5 wt% E-Ti 3 C 2 coating, at nearly three orders of magnitude higher than a pure epoxy coating. In contrast, the coating with unmodified Ti 3 C 2 yielded an impedance improvement of approximately one order of magnitude. Salt spray tests manifested the same anticorrosion results. The enhanced anticorrosion improvement by epoxy-functionalization should result from the better dispersibility and chemical bonding between the E-Ti 3 C 2 and matrix. The mechanical properties and adhesion force of the coatings were also evaluated. A better scratch resistance, higher adhesion force and reduced flexibility resulted after E-Ti 3 C 2 incorporation.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Ting Shen,Hongxi Zeng,Zhiwei Chen,Shu-Rui Zhao,Hao-Cheng Yang,Weihua Li
Affordable self-repairing coatings with robust interfacial adhesion are of great interest in anticorrosion applications. Epoxy (EP) coating is the most widely used commercial anticorrosion coating but suffers from failure once damaged because it cannot be repaired facilely as a thermosetting material. Herein, we develop a thermoreversible epoxy by regulating the curing program within a partial curing window of a commercial epoxy–anhydride system. The as-prepared coatings experience a reversible solid–liquid transition during the heating–cooling cycle. The curing windows for thermoplastic and thermosetting epoxy are investigated as well as the underlying curing mechanism. The photothermal coatings were fabricated by embedding carbon nanoparticles (CNPs) within the epoxy coating, enabling in situ repairing by the near-infrared laser irradiation. Such coatings show moderate surface adhesion to metal surfaces, impressive recycling and repairing abilities, and competitive corrosion resistance.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Changhua Li,Yong Li,Qilong Chen,Dan Sun,Hongjie Li,Wen Chen,Jing Yan,Guiyang Wu,Xi Yuan,Sha Wang,Yi He,Hao Yu
Polyaniline-coated Ti 3 C 2 Tx particles (TPi) endowed the electrophoretic deposited epoxy coating with efficient physical shielding and corrosion inhibition capacities to improve the corrosion protection ability. Ti 3 C 2 Tx of few/single layers was prepared and TPi particles were synthesized by in-situ polymerization of polyaniline on Ti 3 C 2 Tx surface. Characterization results indicated the successful synthesis of TPi material. TPi/epoxy coating was prepared on P110 steel sheet through cathodic electrophoretic deposition method, and the protection ability was tested by electrochemical impedance spectroscopy (EIS) and saline immersion test. EIS results of the complete coating showed that impedance modulus at low frequency (0.01 Hz) of TP7 coating was 3.92 × 10 8 Ω cm 2 after soaking for 20 d, which was higher than 2.82 × 10 6 Ω cm 2 of neat epoxy coating (NEP), indicating better protection performance. The results of impedance spectrum of scratched coating showed that TP7 coating had obvious corrosion inhibition effect, which was attributed to the passivation effect of polyaniline to promote the conversion of loose corrosion products into dense layers. This research provided a new approach to apply Ti 3 C 2 Tx into the electrophoretic deposited epoxy coating with corrosion inhibition effect.
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
Polymers
·
2017
·Vol. 9
·期 8
·333
·
IF 3.364
Liang Fang,Jiamei Chen,Yuting Zou,Zhongzi Xu,Chunhua Lu
The thermally-induced self-healing behavior of polymer coatings consists of two steps, i.e., gap closure and crack repair. In addition, the polymer coatings with thermally-induced self-healing capability are expected to show satisfied properties to ensure the application. Here, four epoxy coatings with dense irreversible Network I, dense reversible Network II based on a Diels–Alder (DA) reaction, loose irreversible Network III, as well as partially irreversible and partially reversible Network IV were prepared, respectively. The dense irreversible Network I showed an evident gap closure upon heating, while the crack still existed at the high temperature. The dense reversible Network II presented good self-healing upon direct heating at a high temperature of 150 °C, leading to the quick gap closure in 40 s and subsequent crack disappearance in 80 s. The loose irreversible Network III showed negligible crack variations upon heating, while the partially reversible and partially irreversible Network IV showed quick gap closure as well but only partial crack disappearance. Besides, the coating with the reversible Network II based on the DA reaction not only presented good self-healing capability but also possessed the satisfied mechanical properties and the best electrochemical corrosion property, ensuring its further exploitation and potential practical applications.Keywords:self-healing;epoxy coatings;Diels–Alder reactions;reverse plasticity;network architectures
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Corrosion Communications
·
2022
·
IF 0
Jinke Wang,Shanghao Wu,Lingwei Ma,Bing Zhao,Haowen Xu,Xiaolun Ding,Dawei Zhang
This work synthesized novel Fe 3 O 4 nanoparticles loaded with 2-mercaptobenzothiazole corrosion inhibitors (Fe 3 O 4 -MBT NPs), which possessed not only photothermal conversion property but also corrosion inhibition ability. The loading percentage of MBT inhibitors in the Fe 3 O 4 -MBT NPs was 9.69 wt.%. The obtained Fe 3 O 4 -MBT NPs were incorporated into a shape memory epoxy coating to achieve passive protection and self-healing property. The passive protection property of intact Fe 3 O 4 -MBT/epoxy coating was assessed using electrochemical impedance spectroscopy (EIS) measurement during immersion in 3.5 wt.% NaCl solution. The low-frequency impedance modulus at 0.01 Hz of the composite coating containing 3 wt.% Fe 3 O 4 -MBT NPs was approximately 5 times higher than that of the blank epoxy coating after 240 h of immersion, indicating the superior barrier property of the composite coating. As for the self-healing property, the scratch width on the coating surface could narrow from 80 µm to ∼5 µm after near-infrared (NIR) light irradiation for 30 s, which was ascribed to the excellent photothermal conversion property of Fe 3 O 4 NPs. EIS results verified that both the scratch closure triggered by the photothermal conversion of Fe 3 O 4 NP and the release of MBT inhibitors are beneficial for the suppression of corrosion activity within the coating scratch. The Fe 3 O 4 -MBT/epoxy coating with outstanding passive protection and self-healing property holds great potential to achieve long-term corrosion protection.
研究领域:
材料科学
·
表面工程
·
电化学
·
纳米技术
✓ 已验证
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yue Sun,Xiang Li,Bin Du,Jialong Cui,Ali Abdullah,Yanji Zhu,Huaiyuan Wang,Di Bao
Global warming is attributed to excessive emissions of greenhouse gases, which are being addressed through the deployment of carbon capture technologies aimed at mitigating climate change. However, this approach faces significant challenges, as high concentrations of CO 2 pose a huge risk of corrosion, compromising integrity. The active inhibitor polyfluoroaniline grown on the surface of graphene (Gr-PFAN) is encapsulated in epoxy novolac (EN) coating. And highly reactive nitrogen-containing poly(p-phenylenediamine-fluoroaniline) (Gr-PPFAN) was synthesized by changing the polymerization monomer. For the first time, primary amine nitrogen-containing active sites are discussed in CO 2 shielding material. The gas transmission rate (GTR) test showed that the GTR of the composite film containing Gr-PPFAN was 3.7 times higher than that of Gr-PFAN. And the presence of highly reactive amines in the polymer mass transfer behavior was calculated by molecular simulation. Therefore, the PPFAN coating is a serious failure in H 2 O-CO 2 environment. The introduction of the low content of active sites in Gr-PFAN into the epoxy resin matrix resulted in significant enhancement of the H 2 O, H 2 O-CO 2 and H + corrosion resistance. The small amount of active amine not only enhances the phase interface between the resin and the flake filler, but also facilitates the formation of a protective layer on the metal surface. Experimental results demonstrated that Gr-PFAN/EN exhibited the highest |Z| 0.01 Hz value (3.5 × 1011 O × cm 2 ) after 90 days of immersion in 3.5 wt% NaCl solution and 1.5 × 1011 O × cm 2 for 30 days in the carbon capture environment. Furthermore, it makes Gr-PFAN/EN a promising candidate for practical applications in CO 2 capture projects. The findings provide a scientific basis for the development of efficient anti-corrosion coatings suitable for carbon capture technologies.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Miao Yuan,Saidan Wang,Hongxia Du,Yating Sui,Xiangjing Zhang,Song Zhao,Qiushi Li,Shaojie Liu,Xuteng Xing,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene, with a large specific surface area, high chemical stability and excellent barrier properties, has become a promising of anti-corrosion filler in organic coatings. However, the poor dispersion and compatibility in organic coatings restrict its efficient application. To this end, L-histidine (L-His) corrosion inhibitor was grafted on the 3-aminopropyl triethoxysilane (APTES) functionalized Ti 3 C 2 T x MXene surface, under the electrostatic attraction between the carboxylate and protonated aminopropyl groups. The obtained APTES-Ti 3 C 2 T x MXene@L-His cannot only accelerate the dispersion of Ti 3 C 2 T x MXene filler, but also greatly promote the anti-corrosion property and service lifetime of coatings through combining the physical shielding effect of MXene laminate structure with active anti-corrosion function of L-His corrosion inhibitor. Results show that amino-functionalized Ti 3 C 2 T x MXene can maintain homogeneous in epoxy resin for 300 h, enhancing its dispersion in epoxy coating. Moreover, APTES-Ti 3 C 2 T x MXene@L-His composite can achieve the continuous release of L-His for 3000 min, and additional acid-base dual response property, the releasing rate of L-His is significantly accelerated in acidic or alkaline solutions. The total loading amount of L-His in APTES-Ti 3 C 2 T x MXene@L-His composite is about 3 %. Furthermore, the practical composite coating containing APTES-Ti 3 C 2 T x MXene@L-His also exhibits the excellent anti-corrosion and certain self-healing properties, such as its |Z 0.01 Hz| value remains above 10 10 Ω·cm 2 during the 40 d immersing in 3.5 NaCl solution, which is 3 orders of magnitude higher than that of pure epoxy coating. This work extends the great significance for Ti 3 C 2 T x MXene based composite coatings application of in the field of anti-corrosion.
研究领域:
材料科学
·
腐蚀与防护
·
有机涂层改性
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Ao Men,Liangliang Xiong,Cong Cai,Xiaoqiang Fan,Minhao Zhu
A double-walled microcapsule was fabricated by integrating Ti 3 C 2 T x onto polysulfone through electrostatic self-assembly, effectively overcoming the limitations of conventional single-walled microcapsules, such as inadequate thermal stability, premature release and susceptibility to breakage. By incorporating Ti 3 C 2 T x @PSF microcapsule loaded with ionic liquid (IL) into the coating, a self-lubricating and self-repairing anti-wear and corrosion resistance epoxy coating was developed and evaluated. The coating exhibited an 83.24 % reduction in wear rate, attributed to the uniform lubricating films formed by the released IL and the broken Ti 3 C 2 T x microcapsule. Additionally, the enhanced thermal stability of the double-walled structure helps to prevent the uncontrolled loss of the ionic liquid. For corrosion resistance, the coating containing 10 wt% Ti 3 C 2 T x @PSF@IL demonstrated the ability to withstand up to 40 days of salt spray exposure before notable corrosion occurred. This noticeable performance is attributed to the enhanced interface between the microcapsules and resin, the extended diffusion path created by Ti 3 C 2 T x , and the adsorption effect of IL. Herein, this Ti 3 C 2 T x @PSF double-walled microcapsule loaded IL provides an effective solution for high-performance anticorrosive and wear-resistant epoxy coatings in harsh environments.
研究领域:
材料科学
·
表面工程
·
腐蚀防护
✓ 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）