NDLI: Thermal and mechanical properties of epoxy composite filled with binary particle system of polygonal aluminum oxide and boron nitride platelets

Content Provider	Springer Nature Link
Author	Permal, Anithambigai Devarajan, Mutharasu Hung, Huong Ling Zahner, Thomas Lacey, David Ibrahim, Kamarulazizi
Copyright Year	2016
Abstract	The increased heat generated in high-density electronics has intensified the search for advanced thermal management solutions. This urge has prompted fundamental studies on various filler-filled polymer composites with enhanced thermal performance. This research is intended to attain better understanding on the effect of particle sizes and geometry of fillers with different ratios of composition on the thermal and mechanical properties of hybrid composite system. It investigates the effect of combining polygonal aluminum oxide (Al$_{2}$O$_{3}$) and boron nitride (BN) platelets to enhance the thermal conductivity of epoxy composite. The surface of the two fillers was functionalized with aminopropyltriethoxysilane (KH550), thereby reducing the thermal interfacial resistance between filler and matrix. It was observed that there is no significant difference in the thermal and mechanical performance between BN$_{1µm}$ and BN$_{5µm}$ filler-filled composites. However, at filler loading of 30 wt%, the Al$_{2}$O$_{3}$ and BN$_{1µm}$ hybrid filler system (ratio 5:5) provided significant enhancement of maximum thermal conductivity of 0.57 Wm$^{−1}$ K$^{−1}$ compared to 0.17 Wm$^{−1}$ K$^{−1}$ that of neat epoxy. This synergistic effect results from the bridging of BN platelets between the Al$_{2}$O$_{3}$ particles facilitating the formation of effective thermal conductance network within the epoxy matrix.
Starting Page	7415
Ending Page	7426
Page Count	12
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	51
Issue Number	16
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2016-05-10
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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