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2013•Journal of Composite MaterialsRequires access

A study on mechanical, thermal, and electrical properties of glass fiber-reinforced epoxy hybrid composites filled with plasma-synthesized AlN

Pravuram Panda, Gopa Mishra, Sisir Mantry, S. K. Singh, Swami Prasad Sinha

Open publisher page 45 citations

Abstract

Glass fiber-reinforced epoxy resin (GFRE) composites filled with aluminum nitride (AlN) powder were fabricated, and their thermal and electrical properties were investigated. It is observed that with the increasing percentage of AlN particles, there is a significant enhancement in thermal conductivity and micro-hardness, but there is a decline in tensile strength. Experimental results demonstrate that the GFRE composites with 10 wt% of AlN loading show maximum dielectric breakdown strength of 30.26 kV/mm with minimum volume resistivity of 7.5 × 10 14 Ω cm and thermal conductivity value of 0.300 W/mK. Scanning electron microscopy studies were conducted to observe the voids and distribution of filler in composites.

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What this paper is about

Glass fiber-reinforced epoxy resin (GFRE) composites filled with aluminum nitride (AlN) powder were fabricated, and their thermal and electrical properties were investigated. It is observed that with the increasing percentage of AlN particles, there is a significant enhancement in thermal conductivity and micro-hardness, but there is a decline in tensile strength. Experimental results demonstrate that the GFRE composites with 10 wt% of AlN loading show maximum dielectric breakdown strength of 30.26 kV/mm with minimum volume resistivity of 7.5 × 10 14 Ω cm and thermal conductivity value of 0.300 W/mK. Scanning electron microscopy studies were conducted to observe the voids and distribution of filler in composites.

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Available abstract

Glass fiber-reinforced epoxy resin (GFRE) composites filled with aluminum nitride (AlN) powder were fabricated, and their thermal and electrical properties were investigated. It is observed that with the increasing percentage of AlN particles, there is a significant enhancement in thermal conductivity and micro-hardness, but there is a decline in tensile strength. Experimental results demonstrate that the GFRE composites with 10 wt% of AlN loading show maximum dielectric breakdown strength of 30.26 kV/mm with minimum volume resistivity of 7.5 × 10 14 Ω cm and thermal conductivity value of 0.300 W/mK. Scanning electron microscopy studies were conducted to observe the voids and distribution of filler in composites.

Key concepts: Materials science, Composite material, Epoxy, Ultimate tensile strength, Glass fiber, Scanning electron microscope, Thermal conductivity, Electrical resistivity and conductivity

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