Understanding the Percolation Characteristics of Nonlinear Composite Dielectrics
Identifieur interne : 000001 ( Main/Exploration ); précédent : 000000; suivant : 000002Understanding the Percolation Characteristics of Nonlinear Composite Dielectrics
Auteurs : Xiao Yang [République populaire de Chine] ; Jun Hu [République populaire de Chine] ; Shuiming Chen [République populaire de Chine] ; Jinliang He [République populaire de Chine]Source :
- Scientific Reports [ 2045-2322 ] ; 2016.
Abstract
Nonlinear composite dielectrics can function as smart materials for stress control and field grading in all fields of electrical insulations. The percolation process is a significant issue of composite dielectrics. However, the classic percolation theory mainly deals with traditional composites in which the electrical parameters of both insulation matrix and conducting fillers are independent of the applied electric field. This paper measured the nonlinear V-I characteristics of ZnO microvaristors/silicone rubber composites with several filler concentrations around an estimated percolation threshold. For the comparison with the experiment, a new microstructural model is proposed to simulate the nonlinear conducting behavior of the composite dielectrics modified by metal oxide fillers, which is based on the Voronoi network and considers the breakdown feature of the insulation matrix for near percolated composites. Through both experiment and simulation, the interior conducting mechanism and percolation process of the nonlinear composites were presented and a specific percolation threshold was determined as 33%. This work has provided a solution to better understand the characteristics of nonlinear composite dielectrics.
Url:
DOI: 10.1038/srep30597
PubMed: 27476998
PubMed Central: 4967925
Affiliations:
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Department of Electrical Engineering, Tsinghua University</institution>, Beijing, 100084,<country>China</country></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="Chen, Shuiming" sort="Chen, Shuiming" uniqKey="Chen S" first="Shuiming" last="Chen">Shuiming Chen</name><affiliation wicri:level="1"><nlm:aff id="a1"><institution>State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University</institution>, Beijing, 100084,<country>China</country></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author><author><name sortKey="He, Jinliang" sort="He, Jinliang" uniqKey="He J" first="Jinliang" last="He">Jinliang He</name><affiliation wicri:level="1"><nlm:aff id="a1"><institution>State Key Lab of Power Systems, Department of Electrical Engineering, Tsinghua University</institution>, Beijing, 100084,<country>China</country></nlm:aff><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea># see nlm:aff country strict</wicri:regionArea></affiliation></author></analytic><series><title level="j">Scientific Reports</title><idno type="eISSN">2045-2322</idno><imprint><date when="2016">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>Nonlinear composite dielectrics can function as smart materials for stress control and field grading in all fields of electrical insulations. The percolation process is a significant issue of composite dielectrics. However, the classic percolation theory mainly deals with traditional composites in which the electrical parameters of both insulation matrix and conducting fillers are independent of the applied electric field. This paper measured the nonlinear V-I characteristics of ZnO microvaristors/silicone rubber composites with several filler concentrations around an estimated percolation threshold. For the comparison with the experiment, a new microstructural model is proposed to simulate the nonlinear conducting behavior of the composite dielectrics modified by metal oxide fillers, which is based on the Voronoi network and considers the breakdown feature of the insulation matrix for near percolated composites. Through both experiment and simulation, the interior conducting mechanism and percolation process of the nonlinear composites were presented and a specific percolation threshold was determined as 33%. 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Siegmann</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Yang, Xiao" sort="Yang, Xiao" uniqKey="Yang X" first="Xiao" last="Yang">Xiao Yang</name></noRegion><name sortKey="Chen, Shuiming" sort="Chen, Shuiming" uniqKey="Chen S" first="Shuiming" last="Chen">Shuiming Chen</name><name sortKey="He, Jinliang" sort="He, Jinliang" uniqKey="He J" first="Jinliang" last="He">Jinliang He</name><name sortKey="Hu, Jun" sort="Hu, Jun" uniqKey="Hu J" first="Jun" last="Hu">Jun Hu</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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