Preparation of h-BN microspheres for nanocomposites with high through-plane thermal conductivity
DC Field | Value | Language |
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dc.contributor.author | Mun, Hyung Jin | - |
dc.contributor.author | Park, Ji Young | - |
dc.contributor.author | Lim, Minseob | - |
dc.contributor.author | Cho, Hong-Baek | - |
dc.contributor.author | Choa, Yong-Ho | - |
dc.date.accessioned | 2023-07-05T05:35:12Z | - |
dc.date.available | 2023-07-05T05:35:12Z | - |
dc.date.issued | 2023-12 | - |
dc.identifier.issn | 0002-7820 | - |
dc.identifier.issn | 1551-2916 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/112995 | - |
dc.description.abstract | In recent times, electronics have been increasingly minimized, and hence, heat dissipation has become essential. Owing to its high thermal conductivity and superior electrical insulation, hexagonal-boron nitride (h-BN) has been regarded as an appropriate ceramic material to increase the thermal conductivity of polymer nanocomposites for effective heat dissipation. However, the poor through-plane thermal conductivity of h-BN severely restricts its practical uses, and it is favorable for heat to radiates in the in-plane direction. In this study, densified spherical h-BN (sph-BN) microspheres, composed of as-synthesized nano-sized h-BN (nano-BN), were manufactured by a spray-drying process with variations in organic and/or inorganic binders followed by sintering. After incorporating various sph-BN particles as fillers into polydimethylsiloxane (PDMS), the through-plane thermal conductivity of composites embedded with sph-BN, assisted by a sodium silicate binder, enhanced the highest through-plane and in-plane thermal conductivities. The composites exhibited high thermal isotropy (through-plane thermal conductivity/in-plane thermal conductivity: lambda perpendicular to/lambda//${\lambda }_ \bot /{\lambda }_{//}$) of 0.77. The out-of-plane thermal conductivity of the composites was remarkably enhanced by over 2000% compared with pristine PDMS, which can be attributed to the synergy combined with the synthesis of the densified spherical BN initiated by nano-BN, sintering, and the application of inorganic binders. This study proposes a simple method to prepare polymer composites with h-BN that exhibit high through-plane thermal conductivity and are promising materials for heat removal in electronics. | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | American Ceramic Society | - |
dc.title | Preparation of h-BN microspheres for nanocomposites with high through-plane thermal conductivity | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1111/jace.19219 | - |
dc.identifier.scopusid | 2-s2.0-85163051654 | - |
dc.identifier.wosid | 001004970800001 | - |
dc.identifier.bibliographicCitation | Journal of the American Ceramic Society, v.106, no.12, pp 1 - 11 | - |
dc.citation.title | Journal of the American Ceramic Society | - |
dc.citation.volume | 106 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 11 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Ceramics | - |
dc.subject.keywordPlus | BORON-NITRIDE | - |
dc.subject.keywordPlus | POLYMER COMPOSITES | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | ORIENTATION | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | NANOSHEET | - |
dc.subject.keywordPlus | ALIGNMENT | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordAuthor | hexagonal-boron nitride | - |
dc.subject.keywordAuthor | polymer nanocomposites | - |
dc.subject.keywordAuthor | spray-dry process | - |
dc.subject.keywordAuthor | through-plane thermal conductivity | - |
dc.identifier.url | https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/jace.19219 | - |
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