Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

Modification and Enhancement of Epoxide Coatings via Elastomeric Polysulfides, Self-Assembled Nanophase Particles, Functional Sol-Gels, and Anti-Corrosion Additives

McClanahan, Eric Robert
http://orcid.org/0000-0001-9787-4529
http://rave.ohiolink.edu/etdc/view?acc_num=akron1493674944922562

Abstract Details

2017, Doctor of Philosophy, University of Akron, Polymer Engineering.
Epoxides are widely used in the coatings industry as coating binders. Epoxide binders have several useful characteristics, which include the ability to react with polysulfide resin modifiers and thermosetting amide curatives. In order to improve the characteristics of epoxide coatings, various functional and non-functional additives and resins can be grafted or added to the epoxide binder. The first study involved the use of reacting polysulfides with epoxides and crosslinking with a polyamide to form films and coatings. While epoxide-polysulfides have heavily investigated in the literature for physical and fracture properties, a study investigating the fracture properties of epoxide-polysulfides at cold, ambient, and hot temperatures has not been attempted. The results indicated a toughening phenomenon at 5-10 wt. % polysulfides that led to enhancements in the fracture properties. Also, the addition of polysulfide content led to improvements in the flexibility and the impact resistance of the formulations. Self-assembled NAnoPhase (SNAP) particles are nano-scale functional sol-gels that were pioneered as corrosion-resistant surface preparations on aluminum substrates. No studies have investigated the use of SNAP particles as functional additives within epoxide-polyamide coating systems. SNAP sol-gel particles were formulated and added into epoxide-polyamide films and coatings. It was found that SNAP sol-gel particles were able to enhance the mechanical properties and corrosion resistance of the coatings. These studies are a novel discovery because the SNAP functional sol-gels are also able to act as a primer additive. In the last study, carbon nanotubes and magnesium were both added into epoxide-polyamide films and coatings systems, which were tested for mechanical and corrosion resistance properties, respectively. While existing studies have investigated the use of magnesium or carbon nanotubes as anti-corrosion additives in epoxide coatings, the tandem use of nanotubes and magnesium has not yet been investigated in the literature in terms of corrosion and mechanical properties. In the absence of magnesium, the addition of carbon nanotubes enhanced the mechanical properties (fracture and tensile properties) of the epoxide-polyamide films, although the enhancement was marginalized when magnesium was added. The carbon nanotubes also aided in the enhancement of the coating’s corrosion resistance as measured via electrochemical impedance spectroscopy (EIS).
Mark Soucek (Advisor)
Evans Edward (Committee Member)
Karim Alamgir (Committee Member)
Cavicchi Kevin (Committee Member)
Miyoshi Toshikazu (Committee Member)
293 p.
Aerospace Materials; Engineering; Mechanical Engineering; Nanoscience; Nanotechnology; Polymer Chemistry; Polymers
Coatings; Sol-Gels; Epoxides; Epoxies; Polysulfides; Self-Assembled Nanophase Particles; Coating Fracture Properties; Carbon Nanotubes; Aerospace Coatings; Corrosion Testing; Particle Characterization; Coatings Formulation

Recommended Citations

Citations

  • McClanahan, E. R. (2017). Modification and Enhancement of Epoxide Coatings via Elastomeric Polysulfides, Self-Assembled Nanophase Particles, Functional Sol-Gels, and Anti-Corrosion Additives [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1493674944922562

    APA Style (7th edition)

  • McClanahan, Eric. Modification and Enhancement of Epoxide Coatings via Elastomeric Polysulfides, Self-Assembled Nanophase Particles, Functional Sol-Gels, and Anti-Corrosion Additives. 2017. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1493674944922562.

    MLA Style (8th edition)

  • McClanahan, Eric. "Modification and Enhancement of Epoxide Coatings via Elastomeric Polysulfides, Self-Assembled Nanophase Particles, Functional Sol-Gels, and Anti-Corrosion Additives." Doctoral dissertation, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1493674944922562

    Chicago Manual of Style (17th edition)

akron1493674944922562
503
© 2017, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.