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EnglishThis paper focuses on the preparation and characterization of hybrid organic-inorganic epoxy systems obtained through the application of a Layer by Layer (LbL) assembly on a UV-cured epoxy coating. To this aim, a mixture 90/10 (wt.%) of 3,4-epoxycyclohexylmethyl-3’,4’-epoxy-cyclo-hexane carboxylate (CE)/diglycidylether-terminated polydi-methyl-siloxane (GTPDMS) was subjected to LbL deposition of 10 and 20 bilayers of silica (positively charged/negatively charged). The relationship between the dielectric properties and transition temperature (Tg) were investigated. Two dielectric relaxation modes namely alpha and beta were observed, attributed to the molecular motions of the polymer chains. The breakdown voltage decreased with increasing number of nanosilica bilayers deposited.
Dielectric properties of UV-cured epoxy films treated with Layer-by-Layer nanosilica architectures / Bouanga C.V.; Couderc H.; Frechette M.F.; Savoie S.; Malucelli G.; Camino G.; Carosio F.. - ELETTRONICO. - (2012), pp. 59-63. ((Intervento presentato al convegno IEEE International Symposium on Electrical Insulation (ISEI) 2012 tenutosi a Montreal nel 14 Oct - 17 Oct 2012.
| Titolo: | Dielectric properties of UV-cured epoxy films treated with Layer-by-Layer nanosilica architectures |
| Autori: | |
| Data di pubblicazione: | 2012 |
| Abstract: | This paper focuses on the preparation and characterization of hybrid organic-inorganic epoxy syst...ems obtained through the application of a Layer by Layer (LbL) assembly on a UV-cured epoxy coating. To this aim, a mixture 90/10 (wt.%) of 3,4-epoxycyclohexylmethyl-3’,4’-epoxy-cyclo-hexane carboxylate (CE)/diglycidylether-terminated polydi-methyl-siloxane (GTPDMS) was subjected to LbL deposition of 10 and 20 bilayers of silica (positively charged/negatively charged). The relationship between the dielectric properties and transition temperature (Tg) were investigated. Two dielectric relaxation modes namely alpha and beta were observed, attributed to the molecular motions of the polymer chains. The breakdown voltage decreased with increasing number of nanosilica bilayers deposited. |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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