Borra, Gopichand (2017) Effect of moisture exposure on long-term properties of epoxy at elevated temperatures. Coursework Masters thesis, University of Southern Queensland. (Unpublished)
Abstract
The main objective of this work was to experimentally determine the effect of moisture exposure on long term properties of epoxy based resin when immersed in saline solution at elevated temperatures from 23oC to 80 oC. The seven different specimens were manufactured using specific mix ratios of fillers and epoxy resin. The specimens were subjected to moisture exposure to determine the amount of moisture absorption and were then subjected to compression test under universal testing machine at 16, 26 and 56 days of immersion. The failure loads of the specimens were recorded.
The moisture absorption results were obtained using saturation equation from ASTM D570 as the specimens at low temperatures absorbed less moisture, the increase in temperature increased the moisture absorption and also the increase in filler content also increased the moisture absorption. The compression strength results revealed that F60 has the lowest strength values 59Mpa for 23oC, 52Mpa for 60oC and 48Mpa for 80oC. The highest strength values 98Mpa for 23oC, 85Mpa for 60oC and 83Mpa is obtained by F0.
Long-term effect is predicted using Arrhenius law for seven different mixes at 23oC, 60oC and 80oC temperatures. The predicted strength reduction after 100 years was estimated at 55%, 42% and 36% for 23oC, 60oC and 80oC temperatures respectively.
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| Item Type: | Thesis (Non-Research) (Coursework Masters) |
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| Item Status: | Live Archive |
| Additional Information: | Current UniSQ staff and students can request access to this thesis. Please email research.repository@unisq.edu.au with a subject line of SEAR thesis request and provide: Name of the thesis requested and Your name and UniSQ email address. |
| Faculty/School / Institute/Centre: | Current - Faculty of Health, Engineering and Sciences - School of Nursing and Midwifery (1 Jan 2015 - ) |
| Supervisors: | Manalo, Allan; Marnan, Ginghis |
| Qualification: | Master of Engineering Sciences (Civil Engineering) |
| Date Deposited: | 22 Jun 2026 22:45 |
| Last Modified: | 22 Jun 2026 22:46 |
| Uncontrolled Keywords: | Epoxy polymer, Fillers, saline solution, moisture absorption, compression test, long-term performance |
| URI: | https://sear.unisq.edu.au/id/eprint/53204 |
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