Mechanical and Thermal Properties of Al2O3-Filled Epoxy Composites

Xiao Ping Zhang; Fan Sun; Bo Wang; Jian Feng Yang; Wei Dong Ding; Chang Yeoul Kim

doi:10.4028/www.scientific.net/MSF.868.111

Paper Titles

Effect of Silica on the Wettability and Composition of the Alumina/Aluminum Interface
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Effects of Additives Content on the Properties of Porous SiC Ceramics
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Synthesis and Characterization of CoMn₂O₄ Nanopowders by a Reverse Micelle Processing
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Mechanical and Thermal Properties of Al₂O₃-Filled Epoxy Composites
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HomeMaterials Science ForumMaterials Science Forum Vol. 868Mechanical and Thermal Properties of Al2O3-Filled...

Mechanical and Thermal Properties of Al₂O₃-Filled Epoxy Composites

Abstract:

The paper presents studies of influences of platelet-shape alumina content on the morphology, mechanical and thermal properties of Al₂O₃/epoxy composites. The alumina particles were pre-treated with surface modifier, and its addition contents were ranged from 17 to 40vol.%. It was found that tensile strength and thermal conductivity increased with the increase of the alumina contents. The fracture surface investigation showed that several strengthening mechanisms, including particles pull-out, crack pinning, plastic void growth and deformation were the main factors for the increments of the tensile strength of the Al₂O₃/epoxy composites. Comparing with pure epoxy polymer, the creep strain values at 70 °C for 1800 s and recovery strain after 3600 s of 40vol.%Al₂O₃/epoxy composites was lower as 0.23% and 70%, respectively. It was due to effective prohibition of the slippage and disentanglement of epoxy polymer molecules by the rigid Al₂O₃.

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Materials Science Forum (Volume 868)

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111-117

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.868.111

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Online since:

August 2016

Authors:

Xiao Ping Zhang, Fan Sun, Bo Wang*, Jian Feng Yang, Wei Dong Ding, Chang Yeoul Kim

Keywords:

Al₂O₃, Creep, Epoxy, Microstructure, Tensile Strength, Thermal Conductivity

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