Carbon Fiber Reinforced Plastics Based on an Epoxy Binder with the Effect of Thermally Induced Self-Repair
Rattachement africain : ru. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
The authors have proposed the novel approach for evaluation of the self-healing effect in carbon fiber reinforced plastics (CFRP) on micro- and macro samples, using the dynamic mechanical analysis (DMA) and the double-cantilever beam delamination methods, respectively. A modified epoxy resin with a self-healing effect was used as the matrix for carbon plastics. The flexural modulus E’ of microsamples with delamination and the specific delamination energy (crack resistance) GIR of macrosamples with a given initial crack were chosen as criteria for evaluating the self-healing of carbon plastics. The sensitivity of the E’ and GIR parameters to the applied initial crack is shown. The value of the elastic modulus E’ with the initial crack can be reduced up to two times compared to the E’ values for the control materials, depending on the length of the initial crack. The degree of recovery of E’ for CFRP with a microcrack varies from 91 to 118%. A high degree of healing could be achieved in 48 h. The GIR value of CFRP samples with a given macroseparation after heat treatment is 7% of the initial GIR value (0.7 kJ/m2). Recovery of delaminations for microsamples is more efficient than for macrosamples. The study of CFRP cracks by X-ray tomography before and after self-healing showed that the crack “overgrows” during the heat treatment cycle, and the defects (pores) formed during the manufacture of the sample decrease in size.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Carbon Fiber Reinforced Plastics Based on an Epoxy Binder with the Effect of Thermally Induced Self-Repair
- Date Crossref
- 28/05/2023
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Bauman Moscow State Technical University Intersectoral Engineering Center “Composites of Russia” pays non établi dans la noticeUniversité ou école supérieure
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Semenov Institute of Chemical Physics pays non établi dans la noticeStructure de recherche
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A. N. Nesmeyanov Institute of Organoelement Compounds pays non établi dans la noticeStructure de recherche
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Institute of Biochemical Physics NM Emanuel pays non établi dans la noticeStructure de recherche
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N.N. Semenov Federal Research Center of Chemical Physics pays non établi dans la noticeStructure de recherche
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A.N. Nesmeyanov Institute of Organoelement Compounds pays non établi dans la noticeStructure de recherche
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N.M. Emanuel Institute of Biochemical Physics pays non établi dans la noticeStructure de recherche
Intersectoral Engineering Center “Composites of Russia” — Bauman Moscow State Technical University, Semenov Institute of Chemical Physics et A. N. Nesmeyanov Institute of Organoelement Compounds, avec 4 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.