Electrical properties and electromagnetic interference shielding effectiveness of multiwalled carbon nanotubes-reinforced EMA nanocomposites

2012 ◽  
Vol 33 (6) ◽  
pp. 897-903 ◽  
Author(s):  
Utpal Basuli ◽  
Santanu Chattopadhyay ◽  
Changwoon Nah ◽  
Tapan Kumar Chaki
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Multiwalled Carbon Nanotubes ◽  
Electromagnetic Interference ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Multiwalled Carbon ◽  
Electromagnetic Interference Shielding Effectiveness

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.

Electromagnetic shielding effectiveness of carbon fabric/epoxy composite with continuous graphene oxide fiber and multiwalled carbon nanotube

2018 ◽  
Vol 52 (24) ◽  
pp. 3341-3350 ◽  
Author(s):  
Nuray Ucar ◽  
Burçak Karagüzel Kayaoğlu ◽  
Arınc Bilge ◽  
Gunseli Gurel ◽  
Pınar Sencandan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Electromagnetic Interference ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Multiwalled Carbon ◽  
Oxide Fiber ◽  
Reduced Graphene ◽  
Electromagnetic Interference Shielding Effectiveness

Carbon fabric composite is used in technical applications such as aircrafts in which electromagnetic shielding (electromagnetic interference–shielding effectiveness) is required. Traditionally, metallic coatings or metal plates are used for electromagnetic shielding, however, conductive filler-filled composite is also alternative to metal sheets due to its light weight. In the literatures, there are studies about effect carbon nanotube and graphene oxide flakes on electromagnetic interference; however, there are no studies encountered that search the effect of carbon nanotube/graphene oxide fiber and alignment of graphene oxide fiber on electromagnetic interference. Thus, in this study, fabrication of light-weight carbon fabric/epoxy composite filled with graphene oxide fiber, reduced graphene oxide fiber and multiwalled carbon nanotube and alignment of graphene oxide fiber was studied for the first time for both electromagnetic shielding (electromagnetic interference–shielding effectiveness) and electrical conductivity. It was found that reduced graphene oxide with two layers at the same alignment (0–0) leads to increment in the electromagnetic interference–shielding effectiveness value, while reduced graphene oxide with opposite alignment (0–90) leads to decrease in the electromagnetic interference–shielding effectiveness value. Opposite to literatures for graphene oxide flakes, highly rough surface of graphene oxide fiber and reduced graphene oxide fiber causes a deterioration in electromagnetic interference–shielding effectiveness due to disruptive multiple reflections resulted from highly rough surface of graphene oxide fiber, which causes multiple reflection effect. Multiwalled carbon nanotube generally provides higher electromagnetic interference–shielding effectiveness than graphene-based fiber because it has higher conductivity and has no disruptive effect of crimpy surface as graphene oxide fiber. Multiwalled carbon nanotube loading of 15 wt% results to 32 dB electromagnetic interference–shielding effectiveness, which is considered an adequate and moderate level of shielding for many applications.

Sign in / Sign up

Export Citation Format

Share Document