Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique

Borth, David J.
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524749968517527

Abstract Details

2018, Master of Science (M.S.), University of Dayton, Materials Engineering.
The research described herein examines the effect of hydrolytic decomposition on the work function of polyurethane rain erosion coatings (REC). Two groups of panels, one group coated with REC containing carbon black and one group coated in REC without carbon black, were exposed to high temperature and humidity conditions in a steam autoclave for various periods of time. The work function of each unique exposure time was measured with a scanning Kelvin probe (SKP) and compared to unexposed coated panels to determine the magnitude of change in the REC coating. For both sample groups, results from the SKP analysis showed that as the coated panels were exposed for longer periods of time, the work function increased compared to an identical panel that was not exposed. The extent of the polymer coating degradation was determined by Raman spectroscopy and thermomechanical analysis (TMA). Raman analysis indicated a decrease in ester bonds, while with TMA a decrease in polymer strength was observed with increasing exposure time. These results demonstrate that there is decomposition of the REC occurring from the exposure and it is due to hydrolysis of the ester bonds. The change in REC structure/composition was able to be detected by the Kelvin probe in a non-destructive manner, making it a valuable tool in assessing the decomposition of polyurethane rain erosion coatings.
Douglas Hansen, Ph D. (Advisor)
98 p.
Aerospace Materials; Materials Science; Polymer Chemistry
Non-destructive Analysis; Scanning Kelvin Probe; SKP; Polyurethane; Hydrolysis; Work Function; Thermomechanical Analysis; TMA; Attenuated Total Reflectance Fourier-transform Infrared Spectroscopy; FT-IR; Raman; Aircraft Coatings

Recommended Citations

Citations

  • Borth, D. J. (2018). Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524749968517527

    APA Style (7th edition)

  • Borth, David. Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique. 2018. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524749968517527.

    MLA Style (8th edition)

  • Borth, David. "Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique." Master's thesis, University of Dayton, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524749968517527

    Chicago Manual of Style (17th edition)

dayton1524749968517527
681
© 2018, some rights reserved.Creative Commons License Non-Destructive Evaluation of Urethane-Ester Coating Systems Using the Scanning Kelvin Probe Technique by David J. Borth is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Dayton and OhioLINK.