Journal
COMPOSITES PART B-ENGINEERING
Volume 79, Issue -, Pages 124-131Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2015.03.047
Keywords
Polymer-matrix composites (PMCs); Electrical properties; Microstructures; Extrusion
Funding
- National Natural Science Foundation of China [51203060]
- China Scholarship Council [201406170083]
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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 10(4) to 10(6) 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. (C) 2015 Published by Elsevier Ltd.
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