The development of electrical treeing in LDPE and its nanocomposites with spherical silica and fibrous and laminar silicates
Identifieur interne : 001391 ( Main/Exploration ); précédent : 001390; suivant : 001392The development of electrical treeing in LDPE and its nanocomposites with spherical silica and fibrous and laminar silicates
Auteurs : Pilar Tiemblo [Espagne] ; Mario Hoyos [Espagne] ; Jose Manuel Gmez-Elvira [Espagne] ; Julio Guzmn ; Nuria Garca [Espagne] ; Andrea Dardano [Italie] ; Francesco Guastavino [Italie]Source :
- Journal of Physics D: Applied Physics [ 0022-3727 ] ; 2008.
Abstract
Electrical treeing in LDPE and three LDPE nanocomposites, with spherical silica and fibrous and laminar phyllosilicates, has been studied. Electrical tests were performed at a 50Hz frequency and voltages between 8 and 29kV, and the time to inception of the first electrical partial discharges (TTI) of the electrical trees and the time to breakdown (TBD), related to the electrical stability of the insulator, were determined. Above 15kV all the nanocomposites show longer inception times and shorter tree growth times than LDPE. It is proposed that both observations are caused by the modification of the polymer crystalline morphology induced by the presence of the fillers and by the development of a large number of interfacial structures, both organoinorganic and amorphouscrystalline. Below 15kV the TBD is increased in the nanocomposites with the laminar silicate because of tortuosity and the TTI is increased in the fibrous silicate containing a nanocomposite because of the LDPE crystalline morphology in the presence of the silicate. The nanosilica particles decrease the electrical stability in the whole voltage range by decreasing both TTI and TBD.
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Phys. D: Appl. Phys.</title><idno type="ISSN">0022-3727</idno><idno type="eISSN">1361-6463</idno><imprint><publisher>IOP Publishing</publisher><date type="published" when="2008">2008</date><biblScope unit="volume">41</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="1">1</biblScope><biblScope unit="page" to="8">8</biblScope><biblScope unit="production">Printed in the UK</biblScope></imprint></series><idno type="istex">10BCE251378EC7420F92D58ACD86D2F8BBB5859E</idno><idno type="DOI">10.1088/0022-3727/41/12/125208</idno><idno type="PII">S0022-3727(08)66286-5</idno><idno type="articleID">266286</idno><idno type="articleNumber">125208</idno></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Electrical treeing in LDPE and three LDPE nanocomposites, with spherical silica and fibrous and laminar phyllosilicates, has been studied. Electrical tests were performed at a 50Hz frequency and voltages between 8 and 29kV, and the time to inception of the first electrical partial discharges (TTI) of the electrical trees and the time to breakdown (TBD), related to the electrical stability of the insulator, were determined. Above 15kV all the nanocomposites show longer inception times and shorter tree growth times than LDPE. It is proposed that both observations are caused by the modification of the polymer crystalline morphology induced by the presence of the fillers and by the development of a large number of interfacial structures, both organoinorganic and amorphouscrystalline. Below 15kV the TBD is increased in the nanocomposites with the laminar silicate because of tortuosity and the TTI is increased in the fibrous silicate containing a nanocomposite because of the LDPE crystalline morphology in the presence of the silicate. The nanosilica particles decrease the electrical stability in the whole voltage range by decreasing both TTI and TBD.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>Italie</li></country><region><li>Communauté de Madrid</li></region></list><tree><noCountry><name sortKey="Guzmn, Julio" sort="Guzmn, Julio" uniqKey="Guzmn J" first="Julio" last="Guzmn">Julio Guzmn</name></noCountry><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Tiemblo, Pilar" sort="Tiemblo, Pilar" uniqKey="Tiemblo P" first="Pilar" last="Tiemblo">Pilar Tiemblo</name></region><name sortKey="Garca, Nuria" sort="Garca, Nuria" uniqKey="Garca N" first="Nuria" last="Garca">Nuria Garca</name><name sortKey="Gmez Elvira, Jose Manuel" sort="Gmez Elvira, Jose Manuel" uniqKey="Gmez Elvira J" first="Jose Manuel" last="Gmez-Elvira">Jose Manuel Gmez-Elvira</name><name sortKey="Hoyos, Mario" sort="Hoyos, Mario" uniqKey="Hoyos M" first="Mario" last="Hoyos">Mario Hoyos</name></country><country name="Italie"><noRegion><name sortKey="Dardano, Andrea" sort="Dardano, Andrea" uniqKey="Dardano A" first="Andrea" last="Dardano">Andrea Dardano</name></noRegion><name sortKey="Guastavino, Francesco" sort="Guastavino, Francesco" uniqKey="Guastavino F" first="Francesco" last="Guastavino">Francesco Guastavino</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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