Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers
An effective model to calculate thermal conductivity of polymer composites using core-shell fillers is presented, wherein a core material of filler grains is covered by a layer of a high-thermal-conductivity (HTC) material. Such fillers can provide a significant increase of the composite thermal con...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/23/5480 |
| _version_ | 1797546030773829632 |
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| author | Jan Czyzewski Andrzej Rybak Karolina Gaska Robert Sekula Czeslaw Kapusta |
| author_facet | Jan Czyzewski Andrzej Rybak Karolina Gaska Robert Sekula Czeslaw Kapusta |
| author_sort | Jan Czyzewski |
| collection | DOAJ |
| description | An effective model to calculate thermal conductivity of polymer composites using core-shell fillers is presented, wherein a core material of filler grains is covered by a layer of a high-thermal-conductivity (HTC) material. Such fillers can provide a significant increase of the composite thermal conductivity by an addition of a small amount of the HTC material. The model employs the Lewis-Nielsen formula describing filled systems. The effective thermal conductivity of the core-shell filler grains is calculated using the Russel model for porous materials. Modelling results are compared with recent measurements made on composites filled with cellulose microbeads coated with hexagonal boron nitride (h-BN) platelets and good agreement is demonstrated. Comparison with measurements made on epoxy composites, using silver-coated glass spheres as a filler, is also provided. It is demonstrated how the modelling procedure can improve understanding of properties of materials and structures used and mechanisms of thermal conduction within the composite. |
| first_indexed | 2024-03-10T14:24:18Z |
| format | Article |
| id | doaj.art-706bdede14ca4326a0339653b17c00de |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T14:24:18Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-706bdede14ca4326a0339653b17c00de2023-11-20T23:09:47ZengMDPI AGMaterials1996-19442020-12-011323548010.3390/ma13235480Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell FillersJan Czyzewski0Andrzej Rybak1Karolina Gaska2Robert Sekula3Czeslaw Kapusta4Hitachi ABB Power Grids Research, 31-154 Krakow, PolandABB Corporate Technology Center, 31-038 Krakow, PolandDepartment of Solid State Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, PolandHitachi ABB Power Grids Research, 31-154 Krakow, PolandDepartment of Solid State Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, PolandAn effective model to calculate thermal conductivity of polymer composites using core-shell fillers is presented, wherein a core material of filler grains is covered by a layer of a high-thermal-conductivity (HTC) material. Such fillers can provide a significant increase of the composite thermal conductivity by an addition of a small amount of the HTC material. The model employs the Lewis-Nielsen formula describing filled systems. The effective thermal conductivity of the core-shell filler grains is calculated using the Russel model for porous materials. Modelling results are compared with recent measurements made on composites filled with cellulose microbeads coated with hexagonal boron nitride (h-BN) platelets and good agreement is demonstrated. Comparison with measurements made on epoxy composites, using silver-coated glass spheres as a filler, is also provided. It is demonstrated how the modelling procedure can improve understanding of properties of materials and structures used and mechanisms of thermal conduction within the composite.https://www.mdpi.com/1996-1944/13/23/5480polymer-matrix compositeepoxy resinfilled epoxycore-shell fillerthermal propertieseffective thermal conductivity |
| spellingShingle | Jan Czyzewski Andrzej Rybak Karolina Gaska Robert Sekula Czeslaw Kapusta Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers Materials polymer-matrix composite epoxy resin filled epoxy core-shell filler thermal properties effective thermal conductivity |
| title | Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers |
| title_full | Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers |
| title_fullStr | Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers |
| title_full_unstemmed | Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers |
| title_short | Modelling of Effective Thermal Conductivity of Composites Filled with Core-Shell Fillers |
| title_sort | modelling of effective thermal conductivity of composites filled with core shell fillers |
| topic | polymer-matrix composite epoxy resin filled epoxy core-shell filler thermal properties effective thermal conductivity |
| url | https://www.mdpi.com/1996-1944/13/23/5480 |
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