Sandwich composites of polyurethane reinforced with poly(3,4-ethylene dioxythiophene)-coated multiwalled carbon nanotubes with exceptional electromagnetic interference shielding properties

RSC Advances ◽  
2015 ◽  
Vol 5 (92) ◽  
pp. 75229-75238 ◽  
Author(s):  
M. Farukh ◽  
Ridham Dhawan ◽  
Bhanu P. Singh ◽  
S. K. Dhawan
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Decay Time ◽  
Electromagnetic Interference ◽  
Composite Films ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Multiwalled Carbon ◽  
Shielding Properties ◽  
Ku Band

PEDOT/MWCNT/PU composite films were designed, which show a shielding effectiveness of ∼45 dB in the Ku-band and a static decay time of 0.2 s which can find applications for the control of EM pollution also as an ESD material for the encapsulation of electronic equipments.

Electrical Conductivity and Electromagnetic Interference Shielding Effectiveness of Multiwalled Carbon Nanotubes Filled ABS Composites

2011 ◽  
Vol 194-196 ◽  
pp. 1554-1557 ◽  
Author(s):  
Hong Yin Shen ◽  
Qing Ze Jiao ◽  
Yun Zhao ◽  
Han Sheng Li ◽  
Zhe Sun
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Electromagnetic Interference ◽  
Volume Resistivity ◽  
Shielding Effectiveness ◽  
Multiwalled Carbon ◽  
Cross Sectional ◽  
Emi Shielding Effectiveness ◽  
Solution Blending ◽  
Combined Solution

Multiwalled carbon nanotubes filled ABS (ABS/MWCNTs) composites were prepared via a method combined solution-blending with hot-press forming. Fractured cross-sectional surfaces of the ABS/MWCNTs composites were analyzed by scanning electron microscopy showing that MWCNTs were dispersed homogeneously in the ABS matrix. The volume resistivity of these composites was also analyzed and the percolation threshold was obtained at low filler loadings about 1–3 wt%. The Electromagnetic interference (EMI) shielding effectiveness (SE) of ABS/MWCNTs composites was investigated in 100–1500 MHz. It was found that SE of the prepared composites strongly depended on MWCNT loading. The highest EMI SE reaching 36 dB was observed for ABS/MWCNT composites containing 15 wt% of MWCNTs at 760 MHz.

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