Carbon nanotube–reinforced polymer composite for electromagnetic interference application: A review

Abstract

The growth of the application of electronic devices has created a new form of pollution known as noise or radio frequency interference, electromagnetic radiation, or electromagnetic interference (EMI), which results in the malfunction of equipment. A new carbon-based polymer composite has been unlocked through the discovery of polymer composites. Carbon nanotubes (CNTs) have shown potential as reinforcement fillers in polymer to enhance an EMI shielding material owing to their large specific surface area, well-defined 3D networking structure, and unique electronic structure. The main focus of this review is the role of CNT as fillers in intrinsic conducting polymer and conducting polymer composite. The factors that influence EMI shielding performance are also included in this review. The roles of the size; shape; and electronic, mechanical, and chemical properties of nanomaterials in tuning the EMI shielding effectiveness of polymer hybrid are emphasized. The structural design of CNT polymer composite has been reviewed as well. Future research direction has been proposed to overcome the current technological limitations and realize the most advanced EMI shielding materials for future use. The composites have a potential to replace traditional shielding materials owing to their advantageous properties.

Cross‐linking, mechanical, dynamical, and EMI absorption shielding effectiveness of NBR based composites filled with combination on ferrite and carbon based fillers

“…Absorption can occur due the interactions of EMI with magnetic or electric dipoles, electrons, and phonons in the shield. The absorbed energy is usually transformed into heat by the Joule effect 7 . The absorption losses in the energy of electromagnetic wave result from dissipated heat generated by eddy currents induced in the material by magnetic fields of the traveling wave.…”

“…Carbon black (CB) is most widely used reinforcing filler in rubber technology, not only for its positive effect on processability and mechanical properties of rubber compounds, but also for its ease production and low price 5,6 . Carbon nanotubes (CNT) are much more expensive, but having unusual mechanical properties, thermal and electrical conductivity, they are highly valuable for nanotechnology, construction, and high‐tech materials 7,8 . Ferrites are ceramic‐like materials with magnetic characteristics possessing high resistivity and permeability, soft magnetic nature, good chemical and weather resistance.…”

Radio-Absorbing Materials Based on Polymer Composites and Their Application to Solving the Problems of Electromagnetic Compatibility

“…For RAM based on thermoplastic matrices, the following processing methods are widely used: (i) molding under pressure in a press or autoclave [ 87 ], (ii) extrusion methods [ 88 ], and (iii) additive technologies [ 89 , 90 ]. Such methods as pouring compositions [ 91 ], pressing [ 92 , 93 ] and autoclave molding [ 94 ], paint and varnish application methods [ 95 , 96 ], technologies for manufacturing porous structures [ 97 ], and impregnation technologies [ 98 , 99 ] are used for production the RAMs based on fiber-reinforced polymer composites. In some cases, to expand the operating radio frequency range and ensure a set of requirements for performance characteristics (physical, mechanical, thermal, resistance to external factors, etc.…”

Enriching WPCs and NFPCs with Carbon Nanotubes and Graphene

“…Both nanomaterials have been used to enhance mechanical properties [44], improve thermal stability [45], decrease flammability [46,47], introduce electrical and thermal conductivity [39], and much more [48]. The applications of these composites include strong and lightweight construction materials [43], electromagnetic shielding [49], antistatic surfaces [50], sensors [51], components such as supercapacitors, etc. [52].…”