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Effect on dielectric properties of LDPE due to addition of different structure of BiFeO3 powders

  • Yu Hua
  • , Wei Song
  • , Zhi Sun
  • , Dong Zhang
  • , Bai Han
  • , Xuan Wang
  • , Qingquan Lei
  • Harbin University of Science and Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Lamellar and spherical BiFeO3 powders were synthesized by the hydrothermal route. The morphology feature of BiFeO3 powders was shown using scanning electron microscope. The SEM images of the lamellar BiFeO3 powders shows the lamellar size was 1-2 μm and thickness was about 100 nm. Each crystal structure were formed of multilayer aggregate. The images of the spherical BiFeO3 powders shows uniform feature with approximately 2 μm in size. Dielectric BiFeO3/LDPE composite with doping lamellar and spherical BiFeO3 powders of different percentages including 0.2, 0.5, 1 and 2 wt%, have been successfully prepared by melt blending route. In this work, we studies AC breakdown strength and dielectric spectrum of BiFeO3/LDPE composite. The AC breakdown strength of LDPE was increased due to addition of lamellar and spherical BiFeO3 powders of 0.2, 0.5, 1 and 2 wt%. The AC breakdown strength of BiFeO3/LDPE firstly increased and then decreased with the increasing of BiFeO3 content. The AC breakdown strength of lamellar-BiFeO3/LDPE composite is higher than of spherical-BiFeO3/LDPE. The dielectric property of BiFeO3/LDPE composite was investigated. The relative permittivity of BiFeO3/LDPE composite is greater than LDPE and firstly decreased then increased with the increasing of doping BiFeO3 content. The relative permittivity of lamellar-BiFeO3/LDPE composite is smaller than the spherica-BiFeO3/LDPE composite under the same conditions.

Original languageEnglish
Title of host publicationICPADM 2018 - 12th International Conference on the Properties and Applications of Dielectric Materials
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages918-920
Number of pages3
ISBN (Electronic)9781538657881
DOIs
StatePublished - 29 Jun 2018
Externally publishedYes
Event12th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2018 - Xi'an, China
Duration: 20 May 201824 May 2018

Publication series

NameProceedings of the IEEE International Conference on Properties and Applications of Dielectric Materials
Volume2018-May

Conference

Conference12th International Conference on the Properties and Applications of Dielectric Materials, ICPADM 2018
Country/TerritoryChina
CityXi'an
Period20/05/1824/05/18

Keywords

  • AC breakdown strength
  • BiFeO/LDPE
  • composite
  • relative permittivity

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