Corrosion Resistance of Epoxy Coatings Modified by Bis-Silane Prepolymer on Aluminum Alloy
In this communication, a bis-silane prepolymer was used to modify epoxy resin, aiming to enhance the corrosion resistance of epoxy coatings on aluminum alloy substrates. The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion b...
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| Veröffentlicht in: | Coatings (Basel) 2021-07, Vol.11 (7), p.842 |
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| creator | Zeng, Diping Liu, Zhiyi Zou, Lihua Wu, Haijiang |
| description | In this communication, a bis-silane prepolymer was used to modify epoxy resin, aiming to enhance the corrosion resistance of epoxy coatings on aluminum alloy substrates. The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion behavior of silane-epoxy coatings was studied. Compared with silane monomer-modified epoxy coatings, bis-silane-modified epoxy coatings have lower coating capacitance (Cc), higher charge transfer resistances (Rdl), and lower double layer capacitance (Cdl) during long-time immersion. It indicates that bis-silane-modified epoxy coating has stronger waterproof permeability and substrate corrosion protection ability. In addition, due to the leaching of the silane component and cross-linking reaction between different silanes during the immersion process, the bis-silane-modified epoxy coatings exhibit much stronger “self-healing” ability. |
| doi_str_mv | 10.3390/coatings11070842 |
| format | Article |
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The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion behavior of silane-epoxy coatings was studied. Compared with silane monomer-modified epoxy coatings, bis-silane-modified epoxy coatings have lower coating capacitance (Cc), higher charge transfer resistances (Rdl), and lower double layer capacitance (Cdl) during long-time immersion. It indicates that bis-silane-modified epoxy coating has stronger waterproof permeability and substrate corrosion protection ability. In addition, due to the leaching of the silane component and cross-linking reaction between different silanes during the immersion process, the bis-silane-modified epoxy coatings exhibit much stronger “self-healing” ability.</description><identifier>ISSN: 2079-6412</identifier><identifier>EISSN: 2079-6412</identifier><identifier>DOI: 10.3390/coatings11070842</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Aluminum base alloys ; Bisphenol A ; Capacitance ; Charge transfer ; Corrosion potential ; Corrosion prevention ; Corrosion resistance ; Crosslinking ; Electrodes ; Electrolytes ; Epoxy coatings ; Epoxy resins ; Leaching ; Prepolymers ; Protective coatings ; Self healing materials ; Silanes ; Solvents ; Spectrum analysis ; Submerging ; Substrates ; Tetraethyl orthosilicate</subject><ispartof>Coatings (Basel), 2021-07, Vol.11 (7), p.842</ispartof><rights>2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion behavior of silane-epoxy coatings was studied. Compared with silane monomer-modified epoxy coatings, bis-silane-modified epoxy coatings have lower coating capacitance (Cc), higher charge transfer resistances (Rdl), and lower double layer capacitance (Cdl) during long-time immersion. It indicates that bis-silane-modified epoxy coating has stronger waterproof permeability and substrate corrosion protection ability. In addition, due to the leaching of the silane component and cross-linking reaction between different silanes during the immersion process, the bis-silane-modified epoxy coatings exhibit much stronger “self-healing” ability.</description><subject>Aluminum base alloys</subject><subject>Bisphenol A</subject><subject>Capacitance</subject><subject>Charge transfer</subject><subject>Corrosion potential</subject><subject>Corrosion prevention</subject><subject>Corrosion resistance</subject><subject>Crosslinking</subject><subject>Electrodes</subject><subject>Electrolytes</subject><subject>Epoxy coatings</subject><subject>Epoxy resins</subject><subject>Leaching</subject><subject>Prepolymers</subject><subject>Protective coatings</subject><subject>Self healing materials</subject><subject>Silanes</subject><subject>Solvents</subject><subject>Spectrum analysis</subject><subject>Submerging</subject><subject>Substrates</subject><subject>Tetraethyl orthosilicate</subject><issn>2079-6412</issn><issn>2079-6412</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNpdkEtLxDAUhYMoOIyzdxlwXc2rjyzHMj5gRPGxcVPS9EYytE1NWrD_3gwzC_Fu7oF7-C7nIHRJyTXnktxop0bbfwVKSU4KwU7QgpFcJpmg7PSPPkerEHYkjqS8oHKBPkvnvQvW9fgVgg2j6jVgZ_BmcD8zLo9g_OQaayw0uJ7xrQ3Jm21VD_jFw-DauQOPI2HdTp3tpy6K1s0X6MyoNsDquJfo427zXj4k2-f7x3K9TTSnfEyA1o2gRUNlkzKWG250boQBmadak1TFSCzPoNYSpEhrklKTgapFPDeKk4wv0dWBO3j3PUEYq52bfB9fVixNhShoxvcucnDpGDd4MNXgbaf8XFFS7Uus_pfIfwHZcGch</recordid><startdate>20210701</startdate><enddate>20210701</enddate><creator>Zeng, Diping</creator><creator>Liu, Zhiyi</creator><creator>Zou, Lihua</creator><creator>Wu, Haijiang</creator><general>MDPI AG</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20210701</creationdate><title>Corrosion Resistance of Epoxy Coatings Modified by Bis-Silane Prepolymer on Aluminum Alloy</title><author>Zeng, Diping ; 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The bis-silane prepolymer was prepared by tetraethoxysilane (TEOS) and γ-glycidoxypropyl trimethoxysilane (GPTMS). The corrosion behavior of silane-epoxy coatings was studied. Compared with silane monomer-modified epoxy coatings, bis-silane-modified epoxy coatings have lower coating capacitance (Cc), higher charge transfer resistances (Rdl), and lower double layer capacitance (Cdl) during long-time immersion. It indicates that bis-silane-modified epoxy coating has stronger waterproof permeability and substrate corrosion protection ability. In addition, due to the leaching of the silane component and cross-linking reaction between different silanes during the immersion process, the bis-silane-modified epoxy coatings exhibit much stronger “self-healing” ability.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/coatings11070842</doi><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Aluminum base alloys Bisphenol A Capacitance Charge transfer Corrosion potential Corrosion prevention Corrosion resistance Crosslinking Electrodes Electrolytes Epoxy coatings Epoxy resins Leaching Prepolymers Protective coatings Self healing materials Silanes Solvents Spectrum analysis Submerging Substrates Tetraethyl orthosilicate |
| title | Corrosion Resistance of Epoxy Coatings Modified by Bis-Silane Prepolymer on Aluminum Alloy |
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