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Electrical and thermal phenomena in low-density polyethylene/carbon black composites near the percolation threshold

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Azizi, Sohrab, David, Eric, Fréchette, Michel F., Nguyen-Tri, Phuong et Ouellet-Plamondon, Claudiane M.. 2019. « Electrical and thermal phenomena in low-density polyethylene/carbon black composites near the percolation threshold ». Journal of Applied Polymer Science, vol. 136, nº 6.
Compte des citations dans Scopus : 12.

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Abstract

Low‐density polyethylene (LDPE)/carbon black (CB) composites were fabricated via melt‐compounding technique. The percolation threshold was found to be around 20 wt % CB, and an electrical network formed by conductive CB was proven by scanning electron microscopy investigation. Dielectric responses depicted an interfacial relaxation peak at 20 wt % CB content. LDPE/CB composites showed an electric field‐dependent conductivity as and a hysteresis behavior around the percolation threshold region. The CB particles with high thermal conductivity increased the heat conductance of the LDPE/CB20 up to 56%. The dynamic mechanical analysis of the LDPE/CB composites exhibited a noticeable contribution of CB throughout the composites, increasing the storage and loss modulus. The physical interactions between CB particles in the filler network enhanced the thermal degradation of the LDPE/CB25 composite for more than 76°C. The maximum breakdown strength of the LDPE/CB composites appeared with an approximately 10% improvement for LDPE/CB5 than pure LDPE.

Item Type: Peer reviewed article published in a journal
Professor:
Professor
David, Éric
Nguyen-Tri, Phuong
Ouellet-Plamondon, Claudiane
Affiliation: Génie mécanique, Autres, Génie de la construction
Date Deposited: 26 Sep 2018 15:10
Last Modified: 20 Aug 2019 04:00
URI: https://espace2.etsmtl.ca/id/eprint/17352

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