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- W3213306211 abstract "The development of self-healing materials is a very attractive approach to provide long-lasting and efficient protection against micro damages. Great attention from numerous research groups has been paid to polymers, composites, and coatings, which exhibit self-healing behavior at different dimensional scales.Through this thesis, the overall design flow for achieving hybrid epoxy systems containing covalent thermo-reversible bonds and the preparation and evaluation of selected examples is detailed. This work underlines that the concurring presence of thermo-reversible covalent bonds and high molecular mobility are essential requirements to develop self-healing systems.The most effective structural modification has been pursued by adjustment of the several features: average functionality of reacting precursor mixture and cross-linking density and thermosetting network and concentration of self-healing reversible bonds.Several Diels-Alder adducts have been synthesized and introduced in hybrid architecture systems, where stable bonds and thermoreversible bonds coexist.The resin formulation aimed at reaching a compromise between the mending capability of cured material and its dimensional stability at high temperatures, required during healing cycles. The Self-Healing ability were assessed by means of morphological, mechanical and spectroscopic characterization.The multiple healing feature of the system was proved: the hybrid epoxy resin was able to recover damages, still exhibiting the pristine stiffness.Satisfactory morphological and mechanical recovery results suggested that synthetic thermoreversible epoxy can envisage a new route in development of maintenance and repair strategies of structural and semi-structural components during their operative life. Furthermore, the availability of dynamic epoxies has allowed the development of smart materials, such as protective coating and re-engineered FRP. Finally, a more comprehensive approach was proposed for fiber-reinforced composites: the development and integration of an active interface, able to recover adhesive damage." @default.
- W3213306211 created "2021-11-22" @default.
- W3213306211 creator A5016731110 @default.
- W3213306211 date "2020-03-13" @default.
- W3213306211 modified "2023-09-23" @default.
- W3213306211 title "Intrinsic self healing thermoset from design to insustrial applications" @default.
- W3213306211 hasPublicationYear "2020" @default.
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