CINECA IRIS Institutional Research Information System
IRIS è l'Anagrafe della ricerca dell'Università degli Studi di Trento, e ha lo scopo di raccogliere, documentare, conservare e diffondere, anche ad accesso aperto, la produzione scientifica degli autori afferenti all'Università degli Studi di Trento.
EnglishBoth untreated and calcined fumed alumina nanoparticles were dispersed into an epoxy-based adhesive at various percentages. The glass transition temperature of the nanofilled adhesives increased up to an optimal filler loading and then decreased, probably due to concurrent and contrasting effects of chain blocking and reduction of the crosslinking degree. Tensile modulus, stress at break, and fracture toughness of bulk adhesive were positively affected by the presence of untreated alumina nanoparticles at an optimal filler content. Mechanical tests on single-lap aluminum bonded joints indicated that untreated alumina nanoparticles markedly improved both the shear strength and fatigue life of the bonded joints. In particular, the shear strength increased by about 60% for an optimal filler content of 1 vol.%, and an adhesive failure mechanism was evidenced for all the tested specimens. Concurrently, a relevant decrease of the equilibrium contact angle with water was observed for nanofilled bulk adhesives. In summary, alumina nanoparticles can effectively improve the mechanical performances of epoxy structural adhesives, both by increasing their mechanical properties and by enhancing the interfacial wettability with an aluminum substrate.
The role of alumina nanoparticles in epoxy adhesives / Dorigato, Andrea; Pegoretti, Alessandro. - In: JOURNAL OF NANOPARTICLE RESEARCH. - ISSN 1388-0764. - STAMPA. - 13:6(2011), pp. 2429-2441.
Scheda prodotto non validato
I dati visualizzati non sono stati ancora sottoposti a validazione formale da parte dello Staff di IRIS, ma sono stati ugualmente trasmessi al Sito Docente Cineca (Loginmiur).
| Titolo: | The role of alumina nanoparticles in epoxy adhesives | |
| Autori: | Dorigato, Andrea; Pegoretti, Alessandro | |
| Autori Unitn: | ||
| Titolo del periodico: | JOURNAL OF NANOPARTICLE RESEARCH | |
| Anno di pubblicazione: | 2011 | |
| Numero e parte del fascicolo: | 6 | |
| Codice identificativo Scopus: | 2-s2.0-80052569495 | |
| Codice identificativo ISI: | WOS:000291225900018 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s11051-010-0130-0 | |
| Handle: | http://hdl.handle.net/11572/84997 | |
| Citazione: | The role of alumina nanoparticles in epoxy adhesives / Dorigato, Andrea; Pegoretti, Alessandro. - In: JOURNAL OF NANOPARTICLE RESEARCH. - ISSN 1388-0764. - STAMPA. - 13:6(2011), pp. 2429-2441. | |
| Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |
File in questo prodotto:
Copyright © 2021