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Thermally Conductive Epoxy Composites Using Porous Boron Nitride Network and Polydopamine-Treated Aluminum Oxide
- Authors
- Lee, Wondu; Yang, Wonyoung; Kim, Jooheon
- Issue Date
- Aug-2023
- Publisher
- AMER CHEMICAL SOC
- Keywords
- polymer-matrix composites(PMCs); thermal conductivity; porous structure; hybrid filler; thermal interfacematerial (TIM)
- Citation
- ACS APPLIED POLYMER MATERIALS, v.5, no.9, pp 7043 - 7050
- Pages
- 8
- Journal Title
- ACS APPLIED POLYMER MATERIALS
- Volume
- 5
- Number
- 9
- Start Page
- 7043
- End Page
- 7050
- ISSN
- 2637-6105
- Abstract
- A high-performancethermally conductive composite wasfabricatedby using epoxy (EP) and hybrid fillers consisting of polydopamine(PDA)-treated alumina (AO) and a porous boron nitride (BN) networkwith carbonized cellulose nanofibers (BNCNF). The continuous heattransfer paths were formed by freeze-cast porous BN. Moreover, theimproved interfacial interaction between filler and matrix was achievedby hydrogen bonding derived from amin group on PDA-AO and hydroxylgroup on BNCNF. This composite exhibited a high thermal conductivity(4.3 W m(-1) K-1, 2050% enhancementcompared to pure EP) along the through-plane direction within thematrix and improved tensile stress (80.86%). Based on these findings,it can be concluded that the EP/BNCNF/PDA-AO composites have the potentialto significantly improve thermal management in electronic devices.The fabricated epoxy composites also exhibited promising characteristicsfor the development of thermal management systems.
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