Magnesium Borate/Boron Nitride Composite Whiskers Strengthen the Mechanical Properties and Thermal Conductivity of Epoxy Resin Composite Materials

Abstract

A highly thermally conductive magnesium borate/boron nitride (A-MBN) composite whisker was developed which was surface functionalized by (3-Aminopropyl)triethoxysilane. Its growth mechanism was proposed. Then, A-MBN/epoxy composites were prepared. When the A-MBN content is 8wt%, the thermal conductivity of the A-MBN/EP composite is 0.61 W·m⁻¹·K⁻¹, which is 230% higher than that of pure EP. At the same time, the tensile strength of the composite material is 85.4% higher than that of the pure EP, and it also maintains excellent electrical insulation property. Finally, the infrared imaging test verifies the excellent heat dissipation performance of the composite material, indicating that the composite material has broad application prospects in the field of thermal conductive materials.

Keywords

thermal conductivity whisker / mechanical properties / thermal properties

References

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