Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold
As the presence of a percolating network formed by filler is indispensable for field grading composite, particulate fillers often result in high filler content that can be unfavorable in some aspects. The utilization of fillers with high aspect ratio is an effective way of reducing percolation thres...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023097220 |
| _version_ | 1797429620997357568 |
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| author | Haoyuan Wang Hengfeng Li |
| author_facet | Haoyuan Wang Hengfeng Li |
| author_sort | Haoyuan Wang |
| collection | DOAJ |
| description | As the presence of a percolating network formed by filler is indispensable for field grading composite, particulate fillers often result in high filler content that can be unfavorable in some aspects. The utilization of fillers with high aspect ratio is an effective way of reducing percolation threshold. In this work, Fe3O4 microplate (FMP) was prepared by a PVP-assisted hydrothermal method and it was adopted to fabricate composite films with different filler content by using polyetherimide (PEI) as the matrix. The composite film exhibited a percolation threshold of approximately 8 phr. The nonlinear coefficient measured 6.28 at a filler content of 10 phr. The nonlinearity in the conductive behavior of the composites was attributed to tunneling effect and Schottky emission. The filling of the FMP into PEI resulted in increase in dielectric constant and the dielectric loss maintained low. This study suggests that the FMP is a promising filler of low-filler-content field grading composite. |
| first_indexed | 2024-03-09T09:15:45Z |
| format | Article |
| id | doaj.art-62f2ff05d45f414c83d6a708e058bb8e |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-09T09:15:45Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-62f2ff05d45f414c83d6a708e058bb8e2023-12-02T07:06:04ZengElsevierHeliyon2405-84402023-11-01911e22514Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation thresholdHaoyuan Wang0Hengfeng Li1School of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaCorresponding author.; School of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaAs the presence of a percolating network formed by filler is indispensable for field grading composite, particulate fillers often result in high filler content that can be unfavorable in some aspects. The utilization of fillers with high aspect ratio is an effective way of reducing percolation threshold. In this work, Fe3O4 microplate (FMP) was prepared by a PVP-assisted hydrothermal method and it was adopted to fabricate composite films with different filler content by using polyetherimide (PEI) as the matrix. The composite film exhibited a percolation threshold of approximately 8 phr. The nonlinear coefficient measured 6.28 at a filler content of 10 phr. The nonlinearity in the conductive behavior of the composites was attributed to tunneling effect and Schottky emission. The filling of the FMP into PEI resulted in increase in dielectric constant and the dielectric loss maintained low. This study suggests that the FMP is a promising filler of low-filler-content field grading composite.http://www.sciencedirect.com/science/article/pii/S2405844023097220Field gradingNonlinear conductivityDielectric propertyFe3O4 microplatePolyetherimide |
| spellingShingle | Haoyuan Wang Hengfeng Li Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold Heliyon Field grading Nonlinear conductivity Dielectric property Fe3O4 microplate Polyetherimide |
| title | Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold |
| title_full | Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold |
| title_fullStr | Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold |
| title_full_unstemmed | Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold |
| title_short | Fe3O4 microplate filled PEI matrix composite with remarkable nonlinear conductive characteristics, dielectric property, and low percolation threshold |
| title_sort | fe3o4 microplate filled pei matrix composite with remarkable nonlinear conductive characteristics dielectric property and low percolation threshold |
| topic | Field grading Nonlinear conductivity Dielectric property Fe3O4 microplate Polyetherimide |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023097220 |
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