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1. Three dimension phenolic resin derived carbon-CNTs hybrid foam for fire retardant and effective electromagnetic interference shielding

Author

Veerendra Kumar Patle, Rajeev Kumar, Anushi Sharma, Neeraj Dwivedi, Dilip Muchhala, Anisha Chaudhary, Yashwant Mehta, D.P. Mondal, and A.K. Srivastava

Subjects
Phenolic resin, Mwcnts, Complex permittivity and permeability, Emi shielding and fire retardant, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Three dimension fire retardant carbon-CNTs hybrid foams for electromagnetic interference (EMI) shielding effectiveness (SE) were fabricated using a polyurethane (PU) template. Phenolic resin with different contents (0.2–2 wt.%) of mutltiwalled carbon nanotubes (MWCNTs) was mixed using a magnetic stirrer for making a homogenous slurry and then PU foam was impregnated in this slurry followed by carbonization at 1000 °C. The foams were characterized for their morphological, structural, mechanical, EMI shielding, and fire-retardant properties. The total EMI shielding effectiveness (SE) of -57.2 dB was achieved for the carbon foam containing 1 wt.% MWCNTs in the frequency range of 8.2–12.4 GHz. Moreover, the addition of MWCNTs into phenolic resin also enhanced the compressive strength (6.5 MPa), thermal stability and fire retardant performance of carbon-CNTs hybrid foams. The multifunctional carbon-CNTs hybrid foams demonstrate that they are outstanding materials with potential applications in EMI shielding and thermal management for defense and aerospace sectors.

Published
2020
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2. Three dimension phenolic resin derived carbon-CNTs hybrid foam for fire retardant and effective electromagnetic interference shielding

Author

Dilip Muchhala, Anushi Sharma, Yashwant Mehta, D.P. Mondal, Neeraj Dwivedi, Veerendra Kumar Patle, Anisha Chaudhary, Rajeev Kumar, and Avanish Kumar Srivastava

Subjects
Materials science, Carbonization, Mechanical Engineering, Carbon nanofoam, Phenolic resin, Mwcnts, Carbon nanotube, law.invention, chemistry.chemical_compound, Complex permittivity and permeability, Compressive strength, chemistry, Mechanics of Materials, law, Electromagnetic shielding, Ceramics and Composites, TA401-492, Thermal stability, Composite material, Emi shielding and fire retardant, Materials of engineering and construction. Mechanics of materials, Fire retardant, Polyurethane
Abstract

Three dimension fire retardant carbon-CNTs hybrid foams for electromagnetic interference (EMI) shielding effectiveness (SE) were fabricated using a polyurethane (PU) template. Phenolic resin with different contents (0.2–2 wt.%) of mutltiwalled carbon nanotubes (MWCNTs) was mixed using a magnetic stirrer for making a homogenous slurry and then PU foam was impregnated in this slurry followed by carbonization at 1000 °C. The foams were characterized for their morphological, structural, mechanical, EMI shielding, and fire-retardant properties. The total EMI shielding effectiveness (SE) of -57.2 dB was achieved for the carbon foam containing 1 wt.% MWCNTs in the frequency range of 8.2–12.4 GHz. Moreover, the addition of MWCNTs into phenolic resin also enhanced the compressive strength (6.5 MPa), thermal stability and fire retardant performance of carbon-CNTs hybrid foams. The multifunctional carbon-CNTs hybrid foams demonstrate that they are outstanding materials with potential applications in EMI shielding and thermal management for defense and aerospace sectors.

Published
2020

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