Microwave absorbing properties of glass fiber/epoxy resin composites tailored with frequency selective surface based on nonwoven of carbon fibers metalized with nickel

Silveira, Daniel Cônsoli; Gomes, Newton Adriano Santos; Rezende, Mirabel Cerqueira; Botelho, Edson Cocchieri

doi:10.1007/s10854-020-03860-3

Cited by 6 publications

(4 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the samples with increasing PCNT concentration, real permeability exhibits an increasing trend, and a decreasing trend is observed in the samples with varying ferrite concentration. This may be owing to the magnetic resonance and eddy current losses with changing frequency [8]. Figure 8 shows the variation in the dielectric and magnetic loss tangent curves.…”

Section: Resultsmentioning

confidence: 99%

“…Recent research focusses on magneto dielectric materials for microwave absorption by varying filler concentrations, thickness, number of layers in the composite structure. Double layered radar-absorbing composite containing ferrite and titanium dioxide (TiO 2 ) exhibited better performance than single-layer microwave absorbers prepared using CoZn ferrite, MnZn ferrite, NiZn ferrite, and TiO 2 , in a concentration of 30% (w/w) in the epoxy matrix [8]. A double-layered microwave absorber comprising Co ferrite and CI composites exhibited promising results less than −10 dB over the frequency range 8.6 GHz-18 GHz [40].…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies proved composite materials containing magneto dielectric (magnetic and dielectric) fillers exhibited better microwave absorption. Dielectric fillers like carbon black (CB) [1-3], carbon nanotubes (CNT) [2-5], carbon nanofibers (CNF) [2], graphene [6-8] are investigated for microwave absorption. Several studies were reported on magnetic absorbers based on ferrites of Nickel [9-11], Manganese [8], Cobalt [12-14], Copper [15-17], Strontium [18-22], Barium [23-27], and iron oxide [28-30].…”

Section: Introductionmentioning

confidence: 99%

“…Dielectric fillers like carbon black (CB) [1-3], carbon nanotubes (CNT) [2-5], carbon nanofibers (CNF) [2], graphene [6-8] are investigated for microwave absorption. Several studies were reported on magnetic absorbers based on ferrites of Nickel [9-11], Manganese [8], Cobalt [12-14], Copper [15-17], Strontium [18-22], Barium [23-27], and iron oxide [28-30]. Further, soft ferrites like Manganese Zinc (MnZn) [31, 32], Cobalt Zinc (CoZn) [33, 34], Nickel Zinc (NiZn) [31-36] blended with MWCNTs, in polymer matrix were acknowledged.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Double-layered radar absorbing structures of MnZn ferrite/Pani-coated MWCNT filled nanocomposites for X-band frequencies

Haritha¹,

Ramji

2021

Plastics, Rubber and Composites

View full text Add to dashboard Cite

In this study, radar absorbing structures (RAS) containing MnZn ferrite/Polyaniline (Pani) coated multi-walled carbon nanotubes (PCNTs) were fabricated to observe their microwave absorption behaviour in X-band frequency range. The ferrite nano particles were prepared by sol-gel auto combustion method. The prepared nano ferrite powder was characterised using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). RAS filled with nano ferrite particles and PCNTs in different concentrations were fabricated to investigate their microwave absorption behaviour using a vector network analyzer (VNA) and later reflection loss (RL) is estimated. The minimum RL loss estimated for double-layered RAS are found to be −29.06 dB at 10.8 GHz for ferrite fixed samples and −33.07 dB at 9.6 GHz for PCNT fixed samples. Further, their mechanical behaviour is examined.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%