High-performance conductive materials based on the selective location of carbon black in poly(ether ether ketone)/polyimide matrix |
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Affiliation: | 1. Groupe de Physique des Matériaux UMR 6634 CNRS, INSA Rouen, av. de l’Université, 76801 Saint Etienne du Rouvray, France;2. Université de Toulouse, INSA, UPS, Mines Albi – ICA/ISAE, 10 av. E. Belin, 31055 Toulouse, France |
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Abstract: | A novel high performance conductive material with excellent comprehensive properties was prepared by melt-blending, and its performances were adjusted by controlling the selective location of carbon black (CB) in poly(ether ether ketone) (PEEK)/thermoplastic polyimide (TPI) matrix. With increasing the CB loadings, the morphology of PEEK/TPI blends changed from sea-island to co-continuous structure, which was owing to the selective location of CB in TPI phase. Notably, with the selective location of CB in the induced co-continuous PEEK/TPI matrix, the electrical percolation threshold was reduced to 5 wt%, which was significantly lower than that of binary PEEK/CB (9 wt%) and TPI/CB (10 wt%) composites. And the electrical conductivity of ternary PEEK/TPI/CB composites was 104 to 106 times higher than that of binary composites at identical 7.5 wt% CB loading, which was attributed to the double percolation effect. Moreover, the incorporation of CB could improve the thermal and mechanical properties effectively. |
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Keywords: | A Polymer-matrix composites (PMCs) B Electrical properties B Microstructures E Extrusion |
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