Electrical and Thermal Properties of PMMA/h-BN Composite Material Produced by Electrostatic Adsorption Method

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Abstract

<p>The electrostatic adsorption method can be used to produce composite materials with an arbitrary structure, and their properties may be tuned by changing the size of the individual components, which in turn alters the composition of the material. To develop a thermally conductive and electrically insulating composite material with high thermal conductivity and acceptable breakdown strength, polymethylmethacrylate (PMMA)/hexagonal boron nitride (h-BN) composite materials were produced by electrostatic adsorption method. The breakdown strength of the composite which the flaky surfaces of h-BN was oriented parallel to the thickness direction, was smaller than that of the composite which the flaky surfaces of h-BN was oriented perpendicular to the thickness direction. On the other hand, the thermal conductivity exhibited the inverse trend to the breakdown strength. The thermal conductivity also increased with the increasing of the molding temperature. The properties of the composite material can be easily changed as necessary controlled by each factors.</p>

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