| Affiliation: | 1. Department of Construction Engineering, École de technologie supérieure (Université du Québec), 1100 Notre-Dame Street West, Montreal, Québec, H3C 1K3 Canada;2. Department of Mechanical Engineering, École de technologie supérieure (Université du Québec), 1100 Notre-Dame Street West, Montreal, Québec H3C 1K3, Canada;3. School of Electrical Engineering, Xi'an Jiaotong University, 28 Xianning West Road, JiaoDa ShangYe JieQu, Beilin Qu, Xian Shi, Shaanxi Sheng, Xi'an, Shaanxi, China;4. Department of Construction Engineering, École de technologie supérieure (Université du Québec), 1100 Notre-Dame Street West, Montreal, Québec, H3C 1K3 Canada
Department of Chemistry, Université de Montreal, 2900 Boulevard Édouard-Montpetit, Montréal, Québec H3T 1J4, Canada |
| 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. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136, 47043. |
