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Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins

The paper describes the effect of the addition of alumina nanofibers on the mechanical properties of the epoxy resin. Alumina nanofibers functionalized with epoxypropyl functional groups are used in this work. The dependence of the mechanical characteristics on the amount of the additive, as well as...

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Autores principales: Simunin, M. M., Voronin, A. S., Fadeev, Yu. V., Dobrosmyslov, S. S., Kuular, A. A., Shalygina, T. A., Shabanova, K. A., Chirkov, D. Yu., Voronina, S. Yu., Khartov, S. V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964609/
https://www.ncbi.nlm.nih.gov/pubmed/36836973
http://dx.doi.org/10.3390/ma16041343
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author Simunin, M. M.
Voronin, A. S.
Fadeev, Yu. V.
Dobrosmyslov, S. S.
Kuular, A. A.
Shalygina, T. A.
Shabanova, K. A.
Chirkov, D. Yu.
Voronina, S. Yu.
Khartov, S. V.
author_facet Simunin, M. M.
Voronin, A. S.
Fadeev, Yu. V.
Dobrosmyslov, S. S.
Kuular, A. A.
Shalygina, T. A.
Shabanova, K. A.
Chirkov, D. Yu.
Voronina, S. Yu.
Khartov, S. V.
author_sort Simunin, M. M.
collection PubMed
description The paper describes the effect of the addition of alumina nanofibers on the mechanical properties of the epoxy resin. Alumina nanofibers functionalized with epoxypropyl functional groups are used in this work. The dependence of the mechanical characteristics on the amount of the additive, as well as the features of its distribution in the material, is investigated. In the work, nanocomposites were obtained, which are epoxy resin with aluminum oxide nanofibers. The mechanical properties of the samples were studied by bending tests and differential mechanical analysis (DMA). It has been shown that the addition of alumina nanofibers leads to an increase in ultimate flexural strength. The maximum of this increase is near the percolation threshold of alumina nanofibers in epoxy resin. With the addition of 0.2% alumina nanofibers, the ultimate flexural strength increases from 41 to 71 MPa. It is shown that after exceeding the percolation threshold of nanofibers, the ultimate strength decreases. In this case, the elastic modulus increases from 0.643 to 0.862 GPa. DMA is shown that the glass transition temperature decreases with increasing amount of the additive. This indicates a decrease in the molecular weight of the polymer. By implication, this suggests that the hardener connects the epoxypropyl functional groups on the nanofibers and the epoxy groups in the resin, and as a result of this process, the nanofibers become natural polymer chain length limiters. The data obtained from mechanical testing and differential mechanical analysis can be used to strengthen epoxy resins in polymer composite materials and molding compositions.
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spelling pubmed-99646092023-02-26 Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins Simunin, M. M. Voronin, A. S. Fadeev, Yu. V. Dobrosmyslov, S. S. Kuular, A. A. Shalygina, T. A. Shabanova, K. A. Chirkov, D. Yu. Voronina, S. Yu. Khartov, S. V. Materials (Basel) Article The paper describes the effect of the addition of alumina nanofibers on the mechanical properties of the epoxy resin. Alumina nanofibers functionalized with epoxypropyl functional groups are used in this work. The dependence of the mechanical characteristics on the amount of the additive, as well as the features of its distribution in the material, is investigated. In the work, nanocomposites were obtained, which are epoxy resin with aluminum oxide nanofibers. The mechanical properties of the samples were studied by bending tests and differential mechanical analysis (DMA). It has been shown that the addition of alumina nanofibers leads to an increase in ultimate flexural strength. The maximum of this increase is near the percolation threshold of alumina nanofibers in epoxy resin. With the addition of 0.2% alumina nanofibers, the ultimate flexural strength increases from 41 to 71 MPa. It is shown that after exceeding the percolation threshold of nanofibers, the ultimate strength decreases. In this case, the elastic modulus increases from 0.643 to 0.862 GPa. DMA is shown that the glass transition temperature decreases with increasing amount of the additive. This indicates a decrease in the molecular weight of the polymer. By implication, this suggests that the hardener connects the epoxypropyl functional groups on the nanofibers and the epoxy groups in the resin, and as a result of this process, the nanofibers become natural polymer chain length limiters. The data obtained from mechanical testing and differential mechanical analysis can be used to strengthen epoxy resins in polymer composite materials and molding compositions. MDPI 2023-02-04 /pmc/articles/PMC9964609/ /pubmed/36836973 http://dx.doi.org/10.3390/ma16041343 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Simunin, M. M.
Voronin, A. S.
Fadeev, Yu. V.
Dobrosmyslov, S. S.
Kuular, A. A.
Shalygina, T. A.
Shabanova, K. A.
Chirkov, D. Yu.
Voronina, S. Yu.
Khartov, S. V.
Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title_full Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title_fullStr Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title_full_unstemmed Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title_short Influence of the Addition of Alumina Nanofibers on the Strength of Epoxy Resins
title_sort influence of the addition of alumina nanofibers on the strength of epoxy resins
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9964609/
https://www.ncbi.nlm.nih.gov/pubmed/36836973
http://dx.doi.org/10.3390/ma16041343
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