Poly(vinylidene fluoride‐co‐hexafluorpropylene)/polyaniline conductive blends: Effect of the mixing procedure on the electrical properties and electromagnetic interference shielding effectiveness

2020 ◽  
Vol 138 (3) ◽  
pp. 49705 ◽  
Author(s):  
Ketly Pontes ◽  
Tamara Indrusiak ◽  
Bluma G. Soares
Keyword(s):  
Electrical Properties ◽  
Electromagnetic Interference ◽  
Vinylidene Fluoride ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Poly Vinylidene Fluoride ◽  
Electromagnetic Interference Shielding Effectiveness

Synergistic effects of hybrid conductive fillers on the electrical properties of carbon fiber pultruded polypropylene/polycarbonate composites prepared by injection molding

2016 ◽  
Vol 51 (7) ◽  
pp. 1005-1017 ◽  
Author(s):  
Myung Geun Jang ◽  
Choonglai Cho ◽  
Woo Nyon Kim
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Carbon Fiber ◽  
Injection Molding ◽  
Electromagnetic Interference ◽  
Synergistic Effects ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Preparation Methods ◽  
Electromagnetic Interference Shielding Effectiveness

In this study, the effects of filler characteristics and composite preparation methods on the morphology, mechanical property, electrical conductivity, and electromagnetic interference shielding effectiveness of the polypropylene/polycarbonate (70/30, wt%)/hybrid conductive filler composites were investigated. Nickel-coated carbon fiber (NCCF) was used as main filler and TiO2, multi-walled carbon nanotube, and graphite were used as second fillers in the composites. The pultruded NCCF/polypropylene composite was used in the preparation of the polypropylene/polycarbonate/NCCF/second filler composites. The electrical conductivity and electromagnetic interference shielding effectiveness of the polypropylene/polycarbonate/NCCF/second filler composites were compared with the type of second filler. The superior value of electromagnetic interference shielding effectiveness was observed to be 51.6 dB (decibel) when the hybrid fillers such as NCCF (5.2 vol% or 20 wt%) and TiO2 (1.2 vol% or 5 wt%) were added in the polypropylene/polycarbonate (70/30) composite. The electrical properties of the polypropylene/polycarbonate (70/30)/NCCF/TiO2 composites was compared with the composite preparation methods, which were injection molding and screw extrusion. The results suggested that fiber length of the NCCF affected significantly to the electrical conductivity and electromagnetic interference shielding effectiveness of the polypropylene/polycarbonate (70/30)/NCCF/TiO2 composites.

Electromagnetic interference shielding effectiveness of polyaniline-nickel oxide coated cenosphere composite film

2017 ◽  
Vol 4 ◽  
pp. 37-42 ◽  
Author(s):  
Pritom J. Bora ◽  
K.J. Vinoy ◽  
Praveen C. Ramamurthy ◽  
Kishore ◽  
Giridhar Madras
Keyword(s):  
Nickel Oxide ◽  
Composite Film ◽  
Electromagnetic Interference ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Electromagnetic Interference Shielding Effectiveness
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