Evaluation of the Mechanical Properties of Microcapsule-Based Self-Healing CompositesReport as inadecuate




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International Journal of Aerospace Engineering - Volume 2016 2016, Article ID 7817962, 10 pages -

Research Article

Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132-84084 Fisciano, Italy

Faculty of Natural Sciences II, Institute of Chemistry, Chair of Macromolecular Science, Martin Luther University of Halle-Wittenberg, von-Danckelmann-Platz 4, 06120 Halle Saale, Germany

Institute for Polymers Composites and Biomaterials IPCB, CNR, Piazzale Enrico Fermi 1, 80055 Portici, Italy

Received 1 July 2015; Revised 20 November 2015; Accepted 13 January 2016

Academic Editor: Hong Nie

Copyright © 2016 Liberata Guadagno et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Self-healing materials are beginning to be considered for applications in the field of structural materials. For this reason, in addition to self-healing efficiency, also mechanical properties such as tensile and compressive properties are beginning to become more and more important for this kind of materials. In this paper, three different systems based on epoxy-resins-ethylidene-norbornene ENB-Hoveyda-Grubbs 1st-generation HG1 catalyst are investigated in terms of mechanical properties and healing efficiency. The experimental results show that the mechanical properties of the self-healing systems are mainly determined by the chemical nature of the epoxy matrix. In particular, the replacement of a conventional flexibilizer Heloxy 71 with a reactive diluent 1,4-butanediol diglycidyl ether allows obtaining self-healing materials with better mechanical properties and higher thermal stability. An increase in the curing temperature causes an increase in the elastic modulus and a slight reduction of the healing efficiency. These results can constitute the basis to design systems with high regenerative ability and appropriate mechanical performance.





Author: Liberata Guadagno, Marialuigia Raimondo, Umberto Vietri, Carlo Naddeo, Anja Stojanovic, Andrea Sorrentino, and Wolfgang H. B

Source: https://www.hindawi.com/



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