Importance of Melt Flow Direction during Injection Molding on Polymer Heat Sinks’ Cooling Efficiency

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dc.contributor.authorGuzej, Michalcs
dc.contributor.authorZachar, Martincs
dc.contributor.authorKomínek, Jancs
dc.contributor.authorKotrbáček, Petrcs
dc.contributor.authorBrachna, Róbertcs
dc.coverage.issue8cs
dc.coverage.volume13cs
dc.date.accessioned2021-04-15T14:54:11Z
dc.date.available2021-04-15T14:54:11Z
dc.date.issued2021-04-07cs
dc.description.abstractPolymers with highly conductive fillers could possibly replace standardly used materials, such as aluminum and copper alloys, for passive cooling purposes. The main problem of the composite polymer-based heat sinks is that their high thermal conductivity is uneven. The orientation of this anisotropy is set according to the position of the highly thermally conductive filler. Its orientation is influenced by the melt flow during the polymer heat sink molding process. This article shows that change of the melt flow inside the mold cavity can improve the overall cooling efficiency of a polymer heat sink, which leads to lower temperatures on the heat source used. Two polymer heat sinks of identical geometries were produced. Their high thermal conductivity was given by the use of graphite flakes as the filler. The only difference between the heat sinks was in the position of the fan gate during their production. Different temperatures of the heat source between the two heat sinks were observed for the same measurement conditions. The measurements were conducted at Heatlab, BUT.en
dc.formattextcs
dc.format.extent1-13cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationPolymers. 2021, vol. 13, issue 8, p. 1-13.en
dc.identifier.doi10.3390/polym13081186cs
dc.identifier.issn2073-4360cs
dc.identifier.other171142cs
dc.identifier.urihttp://hdl.handle.net/11012/196507
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofPolymerscs
dc.relation.urihttps://www.mdpi.com/2073-4360/13/8/1186cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2073-4360/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpolymer heat sinken
dc.subjectthermal managementen
dc.subjectthermal conductivityen
dc.subjectcompositesen
dc.subjectanisotropyen
dc.titleImportance of Melt Flow Direction during Injection Molding on Polymer Heat Sinks’ Cooling Efficiencyen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-171142en
sync.item.dbtypeVAVen
sync.item.insts2021.06.15 12:53:42en
sync.item.modts2021.06.15 12:14:45en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Laboratoř přenosu tepla a prouděnícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Sekce přenosu tepla a prouděnícs
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