MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2024
·
IF 2.5
Cansen Liu,Qingmei Chen,Canhai Cai,Jianyu Xu
Developing ecofriendly anticorrosion coating has great demand for marine protection. Incorporation of nontoxic inorganic fillers into waterborne epoxy (WEP) coating shows tremendous potential for enhancing corrosion resistance. However, the application of MXene/WEP coating is limited by the poor dispersion of MXene in WEP and insufficient corrosion resistance. Herein, a polydopamine (PDA) modified MXene-CeO 2 @PDA (MCP) filler is constructed by a combination of CeO 2 with MXene and embedded into WEP to form ecofriendly anticorrosion MCP/WEP coating. Dispersion of MXene in WEP is improved by the introduction of CeO 2 and PDA modification. Benefiting from the synergy of the physical labyrinth effect of MXene and the chemical inhibition effect of CeO 2 , MCP/WEP coating exhibits remarkable anticorrosion behavior in 3.5 wt% NaCl solution with a low corrosion rate (CR) of 4.48 × 10 −6 mpy, which is three orders of magnitude lower than that of blank WEP (4.78 × 10 −3 mpy). Moreover, MCP/WEP presents long-term and stable corrosion protection for over 30 days. The results reveal the incorporation of MCP significantly promotes the anticorrosion performance of WEP.
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
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Mingjun Cui,Jianda Dong,Kaihe Zhou,Yunhui Fang,Jibin Pu,Haichao Zhao,Yonggang Wang,Liping Wang
In present study, phenosafranin (PSF) was employed to achieve the dispersion of graphene in water owing to the presence of π-π interaction which was also confirmed from the absorption free energy calculated by first principles based on density functional theory. In addition, water-borne epoxy (WEP) coatings containing graphene, PSF and PSF@G were prepared and fabricated on the electrodes. Meanwhile, the corrosion protection performance of different coatings during the immersion in 3.5 wt% NaCl solution was investigated and compared. It could be concluded from the results that PSF@G/WEP coating presented better protective performance than other coatings since the well dispersed graphene in WEP provided superior impermeability to corrosive medium. Besides, the PSF surfactant used to disperse graphene was also beneficial to improve the protective performance of the WEP coating.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Siyu Liu,Chuanpeng Li,Yuchen Sun,Xuanlin Qiu,Xiaoli Li,Chufeng Sun,Yu Liu,Qiangliang Yu,Bo Yu,Meirong Cai,Feng Zhou,Weimin Liu
MXene has excellent anticorrosion and self-lubricating properties. It is widely used in the field of anticorrosion and wear resistance. However, there is a strong interaction between MXene nanosheets, which makes it easy for them to agglomerate in the coating and affects the mechanical properties of the coating. Thus, the application of MXene is limited. In this study, MXene is modified by 2,5-diaminobenzenesulfonic acid, which can reduce the aggregation of MXene in the coating. MXene is functionalized by using tetrabutylphosphorus hydroxide benzotriazole lignin composite material (BTA-P4444-Lig) with environmental protection, anticorrosion, and lubricating properties. The prepared MXene has excellent anticorrosion and lubrication properties. Functionalized MXene (f-MXene-P) is used as a filler for environmentally friendly waterborne epoxy (WEP) coatings. Electrochemical tests show that the impedance of f-MXene-P/WEP (3.91 × 107 Ω·cm2) is an order of magnitude higher than that of WEP (1.89 × 106 Ω·cm2). The maze effect of MXene and the protective film formed by BTA-P4444-Lig on the surface of Q235 steel synergistically enhance the anticorrosion performance of f-MXene-P/WEP. The friction test results show that the friction coefficient of f-MXene-P/WEP (0.068) is much lower than that of WEP (0.612). The synergistic effect of MXene and BTA-P4444-Lig with lubricating properties improves the wear resistance of f-MXene-P/WEP.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Junfeng Chen,Wenjie Zhao
The complex and harsh deep sea environment is the main reason for the failure of the protective coating of marine equipment. However, excellent protective coating is the key to prolong the service life of the equipment under deep sea environment. Ti 3 C 2 T X , with high aspect ratio, abundant surface functional groups and excellent mechanical properties, is the suitable candidate nanofiller for coating reinforcement. Herein, we synthesized a novel silk fibroin-Ti 3 C 2 T X (SF-Ti 3 C 2 T X ) hybrid nanofiller as reinforced-additives for improving the anti-corrosion ability of waterborne epoxy coating. Due to the rough surface of SF-Ti 3 C 2 T X nanosheets, they have excellent compatibility with the resin matrix and could fill the inherent defects of the coating. The anticorrosion behaviors of as-prepared composite coatings under both of atmospheric pressure and simulated deep sea environment were investigated in detail. Particularly, the composite coating with 0.5 wt% SF-Ti 3 C 2 T X sheets showed outstanding corrosion protection (impedance value remained 1.31 × 10 8 Ω⋅cm 2 , four orders of magnitude higher than pure EP) after 240 h immersion under 20 MPa hydrostatic pressure. In addition, the interface of coating/steel was not damaged and the coating remained the favorable adhesion strength (3.16 MPa, but that of pure EP only 0.88 MPa) even in the harsh high hydrostatic pressure. Based on the experiment data, we discussed and analyzed the failure process of coatings and explained the corrosion protection mechanism of SF-Ti 3 C 2 T X hybrid under simulated deep sea environment.
研究领域:
材料科学
·
海洋工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2019
·
IF 3.074
Yunqing Xia,Yi He,Chunlin Chen,Youqing Wu,Fei Zhong,Jingyu Chen
In this work, the hydrophilic organic films were successfully coated on g-C 3 N 4 nanosheets through facile co-modification of dopamine (DA) and silane coupling agent (KH560). The co -modification of polydopamine (PDA) and KH560 on lamellar g-C 3 N 4 greatly enhanced dispersion of g-C 3 N 4 in aqueous solution and dramatically improved the compatibility and interfacial interaction with waterborne epoxy. The effect of incorporating modified g-C 3 N 4 nanosheets into waterborne epoxy on anticorrosion performance for P110 steel substrates were demonstrated through electrochemical impedance spectroscopy (EIS), potentiodynamic polarization and salt spray test. The results revealed that the |Z| 0.01Hz value and percentage coating resistance (R c ) gain (η c %) of nanocomposite coating increased by 977% and 90.72% with the addition of modified g-C 3 N 4 nanosheets in comparison with pure waterborne epoxy coating, exhibiting outstanding anticorrosion abilities. The reinforced anticorrosion performances of nanocomposite coating could be attributed to the notable shielding effect and well dispersibility of modified g-C 3 N 4 nanosheets.
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
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 13
·6330-6342
·
IF 3.925
Yue Yu,Mingjun Cui,Wenru Zheng,Haichao Zhao
As a structural analogue of graphene, hexagonal boron nitride (h-BN) is receiving increased attention in the field of anticorrosive polymer coatings due to its electrical insulation and high barrier properties. However, the hydrophobicity of h-BN nanosheets makes them easily aggregate in water, thereby limiting their application in water-borne polymer coatings for corrosion protection. In this study, carbon dots (CDs) derived from citric acid are prepared as a dispersant for improving the dispersion of h-BN nanosheets in a water-borne epoxy (WEP) coating by taking advantage of the π–π interaction between h-BN and CDs. The possible reaction between oxygen functional groups on the CD surface and unreacted epoxy resin/curing agent could increase the compatibility and crosslinking density between h-BN and the WEP matrix, which in turn effectively reinforces the barrier effect of the composite coating. EIS results show that the impedance modulus of the h-BN@CDs/WEP coating is higher than 108 Ω cm2 after 34 d of exposure in 3.5 wt% NaCl solution, nearly three orders of magnitude higher than those of pure WEP and h-BN/WEP (∼105 Ω cm2). Additionally, salt spray and LEIS results reveal the superior corrosion protection performance of the h-BN@CDs/WEP coating even under damaged status.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Mingjun Cui,Siming Ren,Haichao Zhao,Qunji Xue,Liping Wang
This study reports an eco-friendly water-borne epoxy (EP) with enhanced corrosion protection performance by embedding graphene oxide (GO). For this purpose, the dispersion of the GO in ethanol is improved by modifying the GO nanosheets with hydrophilic dopamine (DA), owing to the π-π interactions between the GO and self-polymerized polydopamine (PDA) as well as the covalent bonding between DA and GO. Results obtained from transmittance electron microscopy (TEM), scanning probe microscopy (SPM) Fourier transform infrared (FT-IR) spectroscopy, Raman spectroscopy, UV–vis absorbance spectroscopy and X-ray photoelectron spectroscopy (XPS) reveal the successful modification of PDA on the surface of GO nanosheets. Besides, the GO/EP and GO-PDA/EP coatings are applied on the steel substrates and their corrosion protection performance is investigated via electrochemical measurements, scanning electron microscopy (SEM) and scanning vibration electrochemical technology (SVET). Results demonstrate that inclusion of well-dispersed GO-PDA nanosheets leads to the remarkable improvement in the corrosion protection performance of water-borne EP coating.
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
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Shan Wan,Huikai Chen,Guangyi Cai,Bokai Liao,Xingpeng Guo
The amino-functionalized carbon dots (FCDs) were used as intercalators to exfoliate and modify the boron nitride for obtaining the FCDs/boron nitride nanosheets (BNNS) nanocomposite . The FCDs, BNNS and FCDs/BNNS were respectively dispersed into the waterborne epoxy (WEP) matrix to prepare the corresponding modified WEP coatings on the copper substrate through the spray coating method. Their micro/macro-morphologies, compositions, surface roughness , self-healing and corrosion resistance behaviors were comparatively researched. Electrochemical results and surface morphology observation show that WEP FCDs/BNNS coating possesses the optimal corrosion protection performance after 40 d immersion in 3.5 wt% NaCl solution. And the impedance value (4.97 × 10 5 Ω cm 2 ) of WEP FCDs/BNNS coating is still about an order of magnitude higher than that of pure WEP coating (3.36 × 10 4 Ω cm 2 ). In the WEP FCDs/BNNS coating system, BNNS as physical barrier extend the diffusion path of corrosive species and block inherent defects of the coating, thus slowing down the corrosion rate; FCDs as intercalators strip BNNS enhancing its physical barrier effect. Besides, FCDs can also act as the effective corrosion inhibitors , which could adsorb on the exposed or corroded copper surface and hinder the further corrosion. Their synergistic effects of physical barrier performance from BNNS and self-healing capability from FCDs endow the WEP composite coating with outstanding corrosion resistance.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Ziyang Zhou,Sepideh Pourhashem,Zhengquan Wang,Jiawen Sun,Xiaohong Ji,Xiaofan Zhai,Jizhou Duan,Baorong Hou
In this research, the effects of fresh and oxidized MXene on the surface, adhesion, and corrosion-resistant properties of waterborne epoxy coatings are considered. The oxidized MXene is prepared through storage of fresh MXene nanosheets in an open vial for 1 month. The results confirm that the waterborne epoxy coating loaded with silane functionalized fresh MXene nanosheets (epoxy/F-MXene) has significantly higher barrier performance and anti-corrosion behavior than the sample modified with silane functionalized oxidized MXene nanosheets (epoxy/F-O-MXene). Indeed, the F-MXene nanosheets (with defect-free and large two dimensional morphology) are able to effectively inhibit the path of corrosive media as well as increment the epoxy matrix compactness compared to the F-O-MXene (with broken nanosheet morphology composed of TiO 2 nanoparticles) due to rapid oxidation of the MXene nanosheets in the environment. Besides, the epoxy/F-MXene nanocomposite coating has slightly higher water contact angle and adhesion strength to the metallic substrate compared to the epoxy/F-O-MXene. The results of this research clearly reveal the importance of preventing MXene oxidation before application as nanofiller in the polymer coatings.
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
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Chenyang Zhao,Yi Huang,Yue Li,Chen Wang,Wenlin Yuan,Di Cheng,Tao Shen,Ji Zhang,Jie Liu,Chao Yang,Chunchun Wu,Qianhong Shen,Hui Yang
Nanocontainers encapsulating corrosion inhibitors are commonly incorporated into organic coatings to enable self-healing effects, thereby ensuring long-term anticorrosion performance. In this study, a novel dual corrosion inhibitor-loaded self-healing nanocontainer with core-shell structure was proposed for fabricating composite waterborne epoxy coatings with both active and passive corrosion prevention properties. The nanocontainer, named BTA-ZIF-8@LDH-Mo, was synthesized through the in-situ growth of molybdate-intercalated ZnAl layered double hydroxide (LDH-Mo) on the surface of 1H-benzotriazole-inbuilt zeolitic imidazolate framework (BTA-ZIF-8). Potentiodynamic polarization results showed that the I corr of bare Q235 carbon steel immersed in a 3.5 wt% NaCl solution decreased from 4.658 × 10 −6 A/cm 2 to 1.274 × 10 −6 A/cm 2 after introducing BTA-ZIF-8@LDH-Mo nanocontainers, resulting in a superior corrosion inhibition efficiency of 72.65 %. Electrochemical impedance spectroscopy further demonstrated that the |Z| f=0.01Hz of epoxy coating doped with BTA-ZIF-8@LDH-Mo reached 4.24 × 10 9 Ω·cm 2 after 42 d of immersion in 3.5 wt% NaCl solution, approximately 30 times higher than that of pure EP coating. Moreover, investigations on artificially scratched coatings indicated that the incorporation of BTA-ZIF-8@LDH-Mo nanocontainers effectively mitigated the corrosion process by forming an inhibiting layer on the metal substrate that impeded the corrosion process. The dual corrosion inhibitor strategy relies on the synergistic action of BTA pre-loaded in ZIF-8 nanoparticles and molybdate ( MoO 4 2- ) intercalated in LDH interlayers for active corrosion protection . Additionally, the nanocontainers enhance passive protection by elongating the diffusion paths of corrosive media and trapping chloride ions. This nanocontainer design offers a facile strategy for fabricating a smart coating with the excellent anticorrosion properties.
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
Materials Today Communications
·
2024
·
IF 3.7
Yun Lei,Qiangqiang Zheng,Haoran Zhu,Rui Dou,Jiabin Yuan,Yonggang Zhao,Haoping Peng,Pengfei Yu
We synthesized PA-SiO 2 gel nanoparticles using sol-gel method by modifying silica aerogel with phytic acid (PA) and 2-(3-epoxycyclohexane) ethyl trimethoxysilane (Si186). By introducing the PA-SiO 2 gel nanoparticles into waterborne epoxy (WEP) coating, the PA-SiO 2 gel1.0 %/WEP coating exhibits excellent corrosion resistance. This is mainly attributed to the strong complexation of PA with metal ions and the physical barrier effect of SiO 2 gel as a filler. In this case, the PA-SiO 2 gel nano-filler not only fills the defects and pores in the WEP coating, but also acts as a physical barrier to extend the invasion of corrosive substances. In addition, the strong complexation of PA with metal ions forms a protective film of a dense complex on the metal surface to prevent further corrosion. Meanwhile, the interface interaction between the coating and metal is enhanced, and its mechanical properties are improved. The electrochemical impedance spectroscopy (EIS) results show that the impedance modulus of PA-SiO 2 gel1.0 %/WEP coating (1.53×10 9 Ω·cm 2 ) is three orders of magnitude higher than that of pure WEP coating (9.33×10 6 Ω·cm 2 ) at 0.01 Hz after immersion in 3.5 wt% NaCl solution for 30 days. The Tales test results show that the corrosion inhibition efficiency is 99.9 % higher than that of pure WEP coating.
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
Xingnan Zhou,Haowei Huang,Rui Zhu,Renjie Chen,Xinxin Sheng,Delong Xie,Yi Mei
To develop a water-borne epoxy (WEP) nanocomposite coating containing graphene oxide (GO) nanomaterials with excellent anti-corrosion property, natural and nontoxic phytic acid (PA) molecules were used to functionalize GO for improving the compatibility between GO and WEP coating. The results of Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, ultraviolet–visible spectroscopy, X-ray photoelectron spectroscopy, and atomic force microscopy indicated successful decoration of PA molecules onto the surface of GO nanomaterials. Scanning electron microscopy analysis revealed that the dispersion performance of GO in WEP was significantly enhanced owing to PA modification. The results obtained from long-term electrochemical measurements and salt spray test confirmed that addition of well-dispersed PA-GO nanomaterials could remarkably enhance the barrier and corrosion protection capability of the WEP coatings.
研究领域:
材料科学
·
表面化学
·
腐蚀科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）