材料科学
复合材料
渗流阈值
乙烯-醋酸乙烯酯
石墨烯
低密度聚乙烯
聚乙烯
复合数
热稳定性
动态力学分析
电介质
化学工程
聚合物
电阻率和电导率
光电子学
电气工程
工程类
纳米技术
共聚物
作者
Sohrab Azizi,Claudiane Ouellet-Plamondon,Phuong Nguyen‐Tri,M.F. Fréchette,Éric David
标识
DOI:10.1016/j.compositesb.2019.107288
摘要
Composites of low-density polyethylene (LDPE), ethylene vinyl acetate (EVA), and a graphene-like material were explored for their electrical properties for use in high-volume low-cost conductive applications. A graphene-like material, obtained from hybrid clay-sucrose carbonization, was investigated as an alternative filler with advantages over conventional graphene technology. The electrical properties of the composites as synthesized by the solvent–casting technique were studied using broadband dielectric spectroscopy. The percolation threshold was identified for both as synthesized and annealed composite samples. Due to charge transport and electrode polarization, the sub-percolating composites exhibited low frequency dispersion particularly at elevated temperatures. Composites of LDPE/EVA/graphene-like above the percolation threshold exhibited a higher rheological storage modulus and thermal stability which indicates an alignment between the electrical, thermal and rheological properties.
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