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Wang X, Zong L, Han J, Wang J, Liu C, Jian X. Toughening and reinforcing of benzoxazine resins using a new hyperbranched polyether epoxy as a non-phase-separation modifier. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.069] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Armelin E, Whelan R, Martínez-Triana YM, Alemán C, Finn MG, Díaz DD. Protective Coatings for Aluminum Alloy Based on Hyperbranched 1,4-Polytriazoles. ACS APPLIED MATERIALS & INTERFACES 2017; 9:4231-4243. [PMID: 28068472 DOI: 10.1021/acsami.6b14174] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Organic polymers are widely used as coatings and adhesives to metal surfaces, but aluminum is among the most difficult substrates because of rapid oxidative passivation of its surface. Poly(1,4-disubstituted 1,2,3-triazoles) made by copper-catalyzed azide-alkyne cycloaddition form strongly bonded interfaces with several metal substrates. In this work, a variety of alkyne and azide monomers were explored as precursors to anticorrosion coatings for a standard high-strength aluminum-copper alloy. Monomers of comparatively low valency (diazide and trialkyne) were found to act as superior barriers for electrolyte transfer to the aluminum surface. These materials showed excellent resistance to corrosive pitting due to the combination of three complementary properties: good formation of highly cross-linked films, as observed by Fourier transform infrared spectroscopy and differential scanning calorimetry; good adhesion to the aluminum alloy substrate, as shown by pull-off testing; and excellent impermeability, as demonstrated by electrochemical impedance spectroscopy.
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Affiliation(s)
- Elaine Armelin
- Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya , C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya , Campus Sud, Edifici C', C/Pasqual i Vila s/n, 08028 Barcelona, Spain
| | - Rory Whelan
- Institut für Organische Chemie, Universität Regensburg , Universitätsstr. 31, 93040 Regensburg, Germany
| | | | - Carlos Alemán
- Departament d'Enginyeria Química, EEBE, Universitat Politècnica de Catalunya , C/Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain
- Center for Research in Nano-Engineering, Universitat Politècnica de Catalunya , Campus Sud, Edifici C', C/Pasqual i Vila s/n, 08028 Barcelona, Spain
| | - M G Finn
- School of Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - David Díaz Díaz
- Institut für Organische Chemie, Universität Regensburg , Universitätsstr. 31, 93040 Regensburg, Germany
- IQAC-CSIC , Jordi Girona 18-26, 08034 Barcelona, Spain
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Santiago D, Fabregat-Sanjuan A, Ferrando F, De la Flor S. Hyperbranched-modified epoxy thermosets: Enhancement of thermomechanical and shape-memory performances. J Appl Polym Sci 2016. [DOI: 10.1002/app.44623] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- David Santiago
- Department of Mechanical Engineering; Universitat Rovira i Virgili; Av. Països Catalans 26 Tarragona 43007 Spain
| | - Albert Fabregat-Sanjuan
- Department of Mechanical Engineering; Universitat Rovira i Virgili; Av. Països Catalans 26 Tarragona 43007 Spain
| | - Francesc Ferrando
- Department of Mechanical Engineering; Universitat Rovira i Virgili; Av. Països Catalans 26 Tarragona 43007 Spain
| | - Silvia De la Flor
- Department of Mechanical Engineering; Universitat Rovira i Virgili; Av. Països Catalans 26 Tarragona 43007 Spain
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Zou ZP, Liu XB, Wu YP, Tang B, Chen M, Zhao XL. Hyperbranched polyurethane as a highly efficient toughener in epoxy thermosets with reaction-induced microphase separation. RSC Adv 2016. [DOI: 10.1039/c5ra21168a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Improvements in the toughness and thermal properties without affecting other mechanical properties in the hyperbranched polyurethane modified epoxy were demonstrated.
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Affiliation(s)
- Zai-Ping Zou
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Xiao-Bing Liu
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Ye-Ping Wu
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Bing Tang
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Mao Chen
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
| | - Xiu-Li Zhao
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang 621900
- China
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Efficient impact resistance improvement of epoxy/anhydride thermosets by adding hyperbranched polyesters partially modified with undecenoyl chains. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.09.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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