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Synergistic effects of graphene nanoplatelets on X-band electromagnetic interference shielding, thermal expansion and thermal stability of poly(ether-ketone) based nanocomposites by Bhosale, S.D. ;Gaikwad, S.D. ;Gadve, R.D. ;Goyal, R.K. is a Materials Science article available to read on EtoBox.

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In this work, the electromagnetic interference shielding effectiveness (EMI-SE) of the poly(ether-ketone) (PEK)graphene nanoplatelets (GNP) nanocomposites fabricated by planetary ball mill followed by hot pressing were investigated in X-band (8.2-12.4 GHz). A percolation threshold of about 0.4 vol% GNP was obtained. The electrical conductivity was increased to about 0.02 S/cm with an EMI-SE of ~33 dB for 1 mm thick 5 vol% GNP filled PEK nanocomposite. This higher value is corresponding to more than 99.95% blocking of the EMI. The EMI-SE increases with increasing thickness of the nanocomposite. The thermal stability and the char yield of the nanocomposites reinforced with 5 vol% GNP were found to increase to 570 • C and to 61.6%, respectively. The dimensional stability of the nanocomposites was also increased compared to neat PEK.

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Author

Bhosale, S.D. ;Gaikwad, S.D. ;Gadve, R.D. ;Goyal, R.K.

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Materials Science (Physical Sciences)