Influence of Skydrol immersion at elevated temperatures on the thermo-mechanical properties of a high-Tg anhydride epoxy resin toughened with a hydroxy-terminated polyester

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007097
URN to cite this document: urn:nbn:de:bvb:703-epub-7097-1

Title data

Hübsch, Jan David ; Demleitner, Martin ; Bard, Simon ; Berendes, Philipp ; Altstädt, Volker ; Mittelstedt, Christian:
Influence of Skydrol immersion at elevated temperatures on the thermo-mechanical properties of a high-Tg anhydride epoxy resin toughened with a hydroxy-terminated polyester.
In: Journal of Applied Polymer Science. Vol. 140 (2023) Issue 1 . - No. e53263.
ISSN 1097-4628
DOI der Verlagsversion: https://doi.org/10.1002/app.53263

	Format: PDF Name: J of Applied Polymer Sci - 2022 - H bsch - Influence of Skydrol immersion at elevated temperatures on the thermo‐mechanical.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Abstract

Abstract Currently, the application of composites in aerospace parts exposed to higher temperatures and in aggressive media is still severely limited. To replace metal alloys, alternative resins systems with suitable long-term heat resistance are needed. In this study, the effect of the aviation hydraulic fluid Skydrol on the thermal and mechanical properties of a high-Tg, anhydride-cured epoxy resin in the unmodified and toughened state at elevated temperature is investigated. An aliphatic polyester diol was selected as an intrinsic toughener and its impact on the thermal, mechanical, and aging properties was determined. Experimental characterization of the aging effects is carried out with dynamic-mechanical characterization, infrared spectroscopy, and electron dispersion x-ray spectroscopy. In addition, the fracture toughness and the fatigue crack propagation behavior are determined. Initially, the toughened system shows an improved fracture toughness. Since oxidation is blocked by the Skydrol fluid only thermal degradation takes place as determined by the decrease in glass transition temperature Tg and network density. The thermal degradation leads to a tougher behavior, which is observed in both systems in static and dynamic mode with toughness decreasing with aging time again.

Further data

Item Type:	Article in a journal
Keywords:	ageing; resins; thermosets
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Faculties > Faculty of Engineering Science > Former Professors > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Volker Altstädt Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Former Professors
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-7097-1
Date Deposited:	14 Jul 2023 07:56
Last Modified:	14 Jul 2023 07:56
URI:	https://epub.uni-bayreuth.de/id/eprint/7097

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