Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler
Polymer composites have several advantages: affordability, ease of processing, and versatile applications. In this study, hexagonal boron nitride (h-BN)/epoxy spheres were fabricated using NaCl, then washing away the NaCl with water to create h-BN/epoxy hollow structures. Reduced graphene oxide (r-G...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180235 |
| _version_ | 1811697742523662336 |
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| author | Cho, Jangwoo Su, Pei-Chen Kim, Jooheon |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Cho, Jangwoo Su, Pei-Chen Kim, Jooheon |
| author_sort | Cho, Jangwoo |
| collection | NTU |
| description | Polymer composites have several advantages: affordability, ease of processing, and versatile applications. In this study, hexagonal boron nitride (h-BN)/epoxy spheres were fabricated using NaCl, then washing away the NaCl with water to create h-BN/epoxy hollow structures. Reduced graphene oxide (r-GO) was subsequently wrapped around these structures to produce h-BN/r-GO/epoxy hollow structures. These structures were then fabricated into composites through a hot pressing method involving high pressure and heat, which achieved a vertical alignment of the h-BN components to establish a heat transfer path, with r-GO evenly dispersed throughout. The thermal conductivity of the h-BN/r-GO/epoxy composite was measured as 4.12 W/m·K, representing a 2060 % increase compared to that of neat epoxy. Despite incorporating electrically conductive r-GO, the h-BN/r-GO/epoxy composite maintained its insulating properties. This is attributed to the even distribution of insulating h-BN within the h-BN/r-GO/epoxy hollow structures. |
| first_indexed | 2024-10-01T08:00:06Z |
| format | Journal Article |
| id | ntu-10356/180235 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T08:00:06Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1802352024-09-25T02:28:50Z Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler Cho, Jangwoo Su, Pei-Chen Kim, Jooheon School of Mechanical and Aerospace Engineering Engineering Hexagonal boron nitride Reduced graphene oxide Polymer composites have several advantages: affordability, ease of processing, and versatile applications. In this study, hexagonal boron nitride (h-BN)/epoxy spheres were fabricated using NaCl, then washing away the NaCl with water to create h-BN/epoxy hollow structures. Reduced graphene oxide (r-GO) was subsequently wrapped around these structures to produce h-BN/r-GO/epoxy hollow structures. These structures were then fabricated into composites through a hot pressing method involving high pressure and heat, which achieved a vertical alignment of the h-BN components to establish a heat transfer path, with r-GO evenly dispersed throughout. The thermal conductivity of the h-BN/r-GO/epoxy composite was measured as 4.12 W/m·K, representing a 2060 % increase compared to that of neat epoxy. Despite incorporating electrically conductive r-GO, the h-BN/r-GO/epoxy composite maintained its insulating properties. This is attributed to the even distribution of insulating h-BN within the h-BN/r-GO/epoxy hollow structures. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (NRF2022M3H4A1A02076956). 2024-09-25T02:28:49Z 2024-09-25T02:28:49Z 2024 Journal Article Cho, J., Su, P. & Kim, J. (2024). Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler. Applied Materials Today, 37, 102149-. https://dx.doi.org/10.1016/j.apmt.2024.102149 2352-9407 https://hdl.handle.net/10356/180235 10.1016/j.apmt.2024.102149 2-s2.0-85186955858 37 102149 en Applied Materials Today © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering Hexagonal boron nitride Reduced graphene oxide Cho, Jangwoo Su, Pei-Chen Kim, Jooheon Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title | Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title_full | Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title_fullStr | Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title_full_unstemmed | Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title_short | Highly thermally conductive and insulating composites fabricated through the hot-pressing of hollow structured h-BN/rGO hybrid filler |
| title_sort | highly thermally conductive and insulating composites fabricated through the hot pressing of hollow structured h bn rgo hybrid filler |
| topic | Engineering Hexagonal boron nitride Reduced graphene oxide |
| url | https://hdl.handle.net/10356/180235 |
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