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Analysis of the Electrical and Thermal Properties for Magnetic Fe3O4-Coated SiC-Filled Epoxy Composites.

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cam.issuedOnline2021-09-07
dc.contributor.authorWu, Jiale
dc.contributor.authorZhang, Yiran
dc.contributor.authorGong, Yangzhi
dc.contributor.authorWang, Kun
dc.contributor.authorChen, Yun
dc.contributor.authorSong, Xupeng
dc.contributor.authorLin, Jun
dc.contributor.authorShen, Boyang
dc.contributor.authorHe, Shaojian
dc.contributor.authorBian, Xingming
dc.contributor.orcidWu, Jiale [0000-0003-2083-0282]
dc.contributor.orcidShen, Boyang [0000-0001-8169-6588]
dc.contributor.orcidHe, Shaojian [0000-0002-4358-4662]
dc.contributor.orcidBian, Xingming [0000-0003-2706-8251]
dc.date.accessioned2021-10-30T01:11:43Z
dc.date.available2021-10-30T01:11:43Z
dc.date.issued2021-09-07
dc.date.updated2021-10-30T01:11:42Z
dc.description.abstractOrderly arranged Silicon carbide (SiC)/epoxy (EP) composites were fabricated. SiC was made magnetically responsive by decorating the surface with iron oxide (Fe3O4) nanoparticles. Three treatment methods, including without magnetization, pre-magnetization and curing magnetization, were used to prepare SiC/EP composites with different filler distributions. Compared with unmodified SiC, magnetic SiC with core-shell structure was conducive to improve the breakdown strength of SiC/EP composites and the maximum enhancement rate was 20.86%. Among the three treatment methods, SiC/EP composites prepared in the curing-magnetization case had better comprehensive properties. Under the action of magnetic field, magnetic SiC were orderly oriented along the direction of an external field, thereby forming SiC chains. The magnetic alignment of SiC restricted the movement of EP macromolecules or polar groups to some extent, resulting in the decrease in the dielectric constant and dielectric loss. The SiC chains are equivalent to heat flow channels, which can improve the heat transfer efficiency, and the maximum improvement rate was 23.6%. The results prove that the orderly arrangement of SiC had a favorable effect on dielectric properties and thermal conductivity of SiC/EP composites. For future applications, the orderly arranged SiC/EP composites have potential for fabricating insulation materials in the power electronic device packaging field.
dc.identifier.doi10.17863/CAM.77521
dc.identifier.eissn2073-4360
dc.identifier.issn2073-4360
dc.identifier.otherPMC8471609
dc.identifier.other34577929
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/330077
dc.languageeng
dc.language.isoeng
dc.publisherMDPI AG
dc.publisher.urlhttp://dx.doi.org/10.3390/polym13183028
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceessn: 2073-4360
dc.sourcenlmid: 101545357
dc.subjectbreakdown strength
dc.subjectdielectric properties
dc.subjectmagnetization treatment
dc.subjectorderly arrangement
dc.subjectsilicon carbide
dc.subjectthermal conductivity
dc.titleAnalysis of the Electrical and Thermal Properties for Magnetic Fe3O4-Coated SiC-Filled Epoxy Composites.
dc.typeArticle
dcterms.dateAccepted2021-09-04
prism.issueIdentifier18
prism.publicationNamePolymers (Basel)
prism.volume13
pubs.funder-project-idNational Key Research and Development Program of China (No. 2017YFB0903800)
pubs.funder-project-idFundamental Research Funds for the Central Universities (No.2019MS011)
pubs.funder-project-idState Key Laboratory of Reliability and Intelligence of Electrical Equipment (No. EERIKF2019002)
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
rioxxterms.versionVoR
rioxxterms.versionofrecord10.3390/polym13183028

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