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Beraldo CHM, Versteg A, Spinelli A, Scharnagl N, da Conceição TF. Anticorrosive properties of chitosan-derivatives coatings on Mg AZ31 alloy in Hank's Balanced Salt Solution. Int J Biol Macromol 2024; 260:129390. [PMID: 38218288 DOI: 10.1016/j.ijbiomac.2024.129390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 12/12/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
This study describes the preparation of chitosan-derivatives coatings on AZ31 Mg alloy for corrosion protection in Hank's Balanced Salt Solution (HBSS). The derivatives were prepared by reacting chitosan with natural aldehydes (vanillin, benzaldehyde and cinnamaldehyde) and the coatings were characterized by means of water contact angle, scanning electron microscopy and swelling essays. The corrosion behavior of the samples was investigated using potentiodynamic polarization, electrochemical impedance spectroscopy and hydrogen evolution essays. All derivatives present superior corrosion protection than neat chitosan and the best performance is observed for the vanillin derivative with the highest modification degree, which present hydrogen evolution rate of 0.05 mL cm-2 day-1, below the tolerance limit for biomedical application, and |Z|max in the order of 104.6 Ω cm2 even after 14 days of exposure to the corrosive solution.
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Affiliation(s)
| | - Augusto Versteg
- Chemistry Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
| | - Almir Spinelli
- Chemistry Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
| | - Nico Scharnagl
- Helmholtz-Zentrum Hereon GmbH, Institute of Surface Science, Geesthacht 21502, Germany.
| | - Thiago Ferreira da Conceição
- Materials Engineering Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil; Chemistry Department, Federal University of Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
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2
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Fleischer M, Kelar Tučeková Z, Galmiz O, Baťková E, Plšek T, Kolářová T, Kováčik D, Kelar J. Plasma Treatment of Large-Area Polymer Substrates for the Enhanced Adhesion of UV-Digital Printing. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:426. [PMID: 38470757 DOI: 10.3390/nano14050426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024]
Abstract
UV-digital printing belongs to the commonly used method for custom large-area substrate decoration. Despite low surface energy and adhesion, transparent polymer materials, such as polymethylmethacrylate (PMMA) and polycarbonate (PC), represent an ideal substrate for such purposes. The diffuse coplanar surface barrier discharge (DCSBD) in a novel compact configuration was used for substrate activation to improve ink adhesion to the polymer surface. This industrially applicable version of DCSBD was prepared, tested, and successfully implemented for the UV-digital printing process. Furthermore, wettability and surface free energy measurement, X-ray photoelectron spectroscopy, atomic force, and scanning electron microscopy evaluated the surface chemistry and morphology changes. The changes in the adhesion of the surface and of ink were analyzed by a peel-force and a crosscut test, respectively. A short plasma treatment (1-5 s) enhanced the substrate's properties of PMMA and PC while providing the pre-treatment suitable for further in-line UV-digital printing. Furthermore, we did not observe damage of or significant change in roughness affecting the substrate's initial transparency.
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Affiliation(s)
- Michal Fleischer
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Zlata Kelar Tučeková
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Oleksandr Galmiz
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Eva Baťková
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Tomáš Plšek
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Tatiana Kolářová
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Dušan Kováčik
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Jakub Kelar
- Department of Plasma Physics and Technology, CEPLANT-R&D Centre for Plasma and Nanotechnology Surface Modifications, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
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Processing of the yttria stabilized zirconia-bioactive glass nano composite produced by electrophoretic deposition method. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-022-05168-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Abstract
AbstractThe yttria-stabilized zirconia (YSZ) is added to a bioactive glass coating through the electrophoretic deposition (EPD) method to significantly improve the mechanical properties, in particular the bonding strength of the coating on the Ti substrate. In this study, suspensions of bioactive glass and YSZ powder (at the same ratio, 20 g/l) are prepared in ethanol solvent; and tri-ethanol-amine is used as the stabilizer. The effects of the EPD parameters such as deposition time and voltage are studied. The optimum coating quality is achieved at a voltage of 60 V for 10 min. After coating, sintering is performed at three different temperatures (800, 850, and 900 °C). The XRD is used to identify the structure and phase of yttria-stabilized zirconia powders and the coated samples. FE-SEM is also employed to assess the microstructure of the specimens. The highest adhesion strength ($$\sim$$
∼
4.38 MPa) is obtained at the sintering temperature of 850 °C.
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Uses of Scanning Electrochemical Microscopy (SECM) for the Characterization with Spatial and Chemical Resolution of Thin Surface Layers and Coating Systems Applied on Metals: A Review. COATINGS 2022. [DOI: 10.3390/coatings12050637] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Scanning Electrochemical Microscopy (SECM) is increasingly used in the study and characterization of thin surface films as well as organic and inorganic coatings applied on metals for the collection of spatially- and chemically-resolved information on the localized reactions related to material degradation processes. The movement of a microelectrode (ME) in close proximity to the interface under study allows the application of various experimental procedures that can be classified into amperometric and potentiometric operations depending on either sensing faradaic currents or concentration distributions resulting from the corrosion process. Quantitative analysis can be performed using the ME signal, thus revealing different sample properties and/or the influence of the environment and experimental variables that can be observed on different length scales. In this way, identification of the earlier stages for localized corrosion initiation, the adsorption and formation of inhibitor layers, monitoring of water and specific ions uptake by intact polymeric coatings applied on metals for corrosion protection as well as lixiviation, and detection of coating swelling—which constitutes the earlier stages of blistering—have been successfully achieved. Unfortunately, despite these successful applications of SECM for the characterization of surface layers and coating systems applied on metallic materials, we often find in the scientific literature insufficient or even inadequate description of experimental conditions related to the reliability and reproducibility of SECM data for validation. This review focuses specifically on these features as a continuation of a previous review describing the applications of SECM in this field.
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Nasri N, Rusli A, Teramoto N, Jaafar M, Ku Ishak KM, Shafiq MD, Abdul Hamid ZA. Past and Current Progress in the Development of Antiviral/Antimicrobial Polymer Coating towards COVID-19 Prevention: A Review. Polymers (Basel) 2021; 13:4234. [PMID: 34883737 PMCID: PMC8659939 DOI: 10.3390/polym13234234] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 01/10/2023] Open
Abstract
The astonishing outbreak of SARS-CoV-2 coronavirus, known as COVID-19, has attracted numerous research interests, particularly regarding fabricating antimicrobial surface coatings. This initiative is aimed at overcoming and minimizing viral and bacterial transmission to the human. When contaminated droplets from an infected individual land onto common surfaces, SARS-CoV-2 coronavirus is able to survive on various surfaces for up to 9 days. Thus, the possibility of virus transmission increases after touching or being in contact with contaminated surfaces. Herein, we aim to provide overviews of various types of antiviral and antimicrobial coating agents, such as antimicrobial polymer-based coating, metal-based coating, functional nanomaterial, and nanocomposite-based coating. The action mode for each type of antimicrobial agent against pathogens is elaborated. In addition, surface properties of the designed antiviral and antimicrobial polymer coating with their influencing factors are discussed in this review. This paper also exhibits several techniques on surface modification to improve surface properties. Various developed research on the development of antiviral/antimicrobial polymer coating to curb the COVID-19 pandemic are also presented in this review.
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Affiliation(s)
- Nazihah Nasri
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
| | - Arjulizan Rusli
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
| | - Naozumi Teramoto
- Department of Applied Chemistry, Faculty of Engineering, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino 275-0016, Chiba, Japan;
| | - Mariatti Jaafar
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
| | - Ku Marsilla Ku Ishak
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
| | - Mohamad Danial Shafiq
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
| | - Zuratul Ain Abdul Hamid
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Pulau Pinang, Malaysia; (N.N.); (A.R.); (M.J.); (K.M.K.I.); (M.D.S.)
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Baden N. Novel Method for High-Spatial-Resolution Chemical Analysis of Buried Polymer-Metal Interface: Atomic Force Microscopy-Infrared (AFM-IR) Spectroscopy with Low-Angle Microtomy. APPLIED SPECTROSCOPY 2021; 75:901-910. [PMID: 33739171 DOI: 10.1177/00037028211007187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There is a great need for the analysis of the chemical composition, structure, functional groups, and interactions at polymer-metal interfaces in terms of adhesion, corrosion, and insulation. Although atomic force microscopy-based infrared (AFM-IR) spectroscopy can provide chemical analysis with nanoscale spatial resolution, it generally requires to thin a sample to be placed on a substrate that has low absorption of infrared light and high thermal conductivity, which is often difficult for samples that contain hard materials such as metals. This study demonstrates that the combination of AFM-IR with low-angle microtomy (LAM) sample preparation can analyze buried polymer-metal interfaces with higher spatial resolution than that with the conventional sample preparation of a thick vertical cross-section. In the LAM of a polymer layer on a metal substrate, the polymer layer is tapered to be thin in the vicinity of the interface, and thus, sample thinning is not required. An interface between an epoxyacrylate layer and copper wire in a flexible printed circuit cable was measured using this method. A carboxylate interphase layer with a thickness of ∼130 nm was clearly visualized at the interface, and its spectrum was obtained without any signal contamination from the neighboring epoxyacrylate, which was difficult to achieve on a thick vertical cross-section. The combination of AFM-IR with LAM is a simple and useful method for high-spatial-resolution chemical analysis of buried polymer-metal interfaces.
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Affiliation(s)
- Naoki Baden
- Nihon Thermal Consulting, Co., Ltd., 1-5-11 Nishishinjuku, Sinjuku-ku, Tokyo 160-0023, Japan
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Abstract
With the development of human society, the requirements for building materials are becoming higher. The development of polymer materials and their application in the field of architecture have greatly enhanced and broadened the functions of building materials. With the development of material science and technology, many functional materials have been developed. Polymer materials have many excellent properties compared with inorganic materials, and they can also be improved to enhance functional properties by blending or adding various additives (such as flame retardants, antistatic agents, and antioxidants). In this paper, polymer-based building materials are introduced with three classes according to the applications, that is, substrates, coatings, and binders, and their recent signs of progress in the preparations and applications are carefully demonstrated.
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8
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Li R, Huang T, Gong S. Preparation of high hydroxyl self‐emulsifying polyester and compounding with acrylate. J Appl Polym Sci 2020. [DOI: 10.1002/app.48278] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rui‐Qi Li
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 People's Republic of China
| | - Tao Huang
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 People's Republic of China
| | - Shu‐Ling Gong
- College of Chemistry and Molecular SciencesWuhan University Wuhan Hubei 430072 People's Republic of China
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Gong J, Jeong H, Cho D. The Development of a Surface Finisher of Car Park Slab Using Waterborne Silicon Acrylic with Polyamide [Part II: Safety Tests]. MATERIALS 2019; 12:ma12010158. [PMID: 30621361 PMCID: PMC6337466 DOI: 10.3390/ma12010158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/21/2018] [Accepted: 01/02/2019] [Indexed: 11/16/2022]
Abstract
Due to the environmental concerns of solventborne coating systems, environmental directives have recently been promulgated in many countries. Additionally, integrated environmental policies have been pushed in many fields to minimise influences on the environment. Waterborne silicon acrylic finishers have gained much interest to replace the traditional finishing system. To satisfy the requirements, a waterborne finisher with polyamide was previously developed and its performance was determined. For further safety assessment, various tests were conducted, such as gas toxicity, heavy metals tests, chemical resistance test and chloride migration test, followed by equivalent standards. In the cases of gas toxicity and heavy metals evaluations, both results were acceptable considering their corresponding standards, e.g. KS F 2271, KS F 3888-2 and BS EN 71-3. Based on the evaluation, silicon acrylic with 30% mix ratio of polyamide resin (SA+PR30%) could be implemented as an environmentally friendly finisher for various applications. In the chemical resistance and chloride migration test results, the developed finisher showed a barrier effect in the chemical environment. Thus, the developed finisher could be an alternative finisher applicable for slabs in chemical industrial areas.
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Affiliation(s)
- Junho Gong
- Department of Convergence System Engineering, Chungnam National University, Daejeon 34134, Korea.
| | - Hoseong Jeong
- Department of Convergence System Engineering, Chungnam National University, Daejeon 34134, Korea.
| | - Dooyong Cho
- Department of Convergence System Engineering, Chungnam National University, Daejeon 34134, Korea.
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10
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Zhong S, Li J, Cai Y, Yi L. Novel surfactant-free waterborne acrylic-silicone modified alkyd hybrid resin coatings containing nano-silica for the corrosion protection of carbon steel. POLYM-PLAST TECH MAT 2018. [DOI: 10.1080/03602559.2018.1542711] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shenjie Zhong
- Institute of Advanced Functional Coatings, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
| | - Jiawei Li
- Institute of Advanced Functional Coatings, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
| | - Ying Cai
- Institute of Advanced Functional Coatings, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
| | - Lingmin Yi
- Institute of Advanced Functional Coatings, College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
- Engineering Research Center for Eco-Dyeing & Finishing of Textiles, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, P. R. China
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Waterborne Acrylate-Based Hybrid Coatings with Enhanced Resistance Properties on Stone Surfaces. COATINGS 2018. [DOI: 10.3390/coatings8080283] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The application of coating polymers to building materials is a simple and cheap way to preserve and protect surfaces from weathering phenomena. Due to its environmentally friendly character, waterborne coating is the most popular type of coating, and improving its performance is an important key of research. The study presents the results regarding the mechanical and photo-oxidation resistance of some water-based acrylic coatings containing SiO2 nanoparticles obtained by batch miniemulsion polymerization. Coating materials have been characterized in terms of hydrophobic/hydrophilic behavior, mechanical resistance and surface morphology by means of water-contact angle, and scrub resistance and atomic force microscopy (AFM) measurements depending on silica-nanoparticle content. Moreover, accelerated weathering tests were performed to estimate the photo-oxidation resistance of the coatings. The chemical and color changes were assessed by Fourier-transform infrared spectroscopy (FTIR) and colorimetric measurements. Furthermore, the nanofilled coatings were applied on two different calcareous lithotypes (Lecce stone and Carrara Marble). Its properties, such as capillary water absorption and color modification, before and after accelerated aging tests, were assessed. The properties acquired by the addition of silica nanoparticles in the acrylic matrix can ensure good protection against weathering of stone-based materials.
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Effect of Zinc Phosphate on the Corrosion Behavior of Waterborne Acrylic Coating/Metal Interface. MATERIALS 2017; 10:ma10060654. [PMID: 28773013 PMCID: PMC5554035 DOI: 10.3390/ma10060654] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 05/30/2017] [Accepted: 05/30/2017] [Indexed: 12/05/2022]
Abstract
Waterborne coating has recently been paid much attention. However, it cannot be used widely due to its performance limitations. Under the specified conditions of the selected resin, selecting the function pigment is key to improving the anticorrosive properties of the coating. Zinc phosphate is an environmentally protective and efficient anticorrosion pigment. In this work, zinc phosphate was used in modifying waterborne acrylic coatings. Moreover, the disbonding resistance of the coating was studied. Results showed that adding zinc phosphate can effectively inhibit the anode process of metal corrosion and enhance the wet adhesion of the coating, and consequently prevent the horizontal diffusion of the corrosive medium into the coating/metal interface and slow down the disbonding of the coating.
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Wan H, Song D, Li X, Zhang D, Gao J, Du C. A new understanding of the failure of waterborne acrylic coatings. RSC Adv 2017. [DOI: 10.1039/c7ra04878e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Two waterborne coatings, a styrene–acrylic coating and a terpolymer coating based on acrylic acid, vinyl chloride and 1,1-dichloroethylene segments, had their barrier properties and wet adhesion compared after immersion in 3.5 wt% NaCl solution.
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Affiliation(s)
- Hongxia Wan
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Dongdong Song
- Aerospace Research Institute of Materials and Processing Technology
- Beijing
- P. R. China
| | - Xiaogang Li
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
- Ningbo Institute of Material Technology and Engineering
| | - Dawei Zhang
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Jin Gao
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
| | - Cuiwei Du
- Institute for Advanced Materials and Technology
- University of Science and Technology Beijing
- Beijing 100083
- P. R. China
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