Tailorable electromagnetic interference shielding using nickel coated glass fabric-epoxy composite with excellent mechanical property

Angappan, M; Bora, Pritom J.; Vinoy, K. J.; Ramamurthy, Praveen C.; Vijayaraju, K.

doi:10.1016/j.coco.2018.09.001

Cited by 30 publications

(19 citation statements)

References 28 publications

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“…The XRD pattern of FAC is similar to the mullite [36]. In case of electroless Ni-FAC, the broadening of the pattern (corresponds to amorphous nature) was due to disorder of the lattice caused by phosphorous when it was accommodated by nickel [9]. A single broad peak was observed on the diffraction pattern at 45°which signifies the presence of nickel at (111) plane [9].…”

Section: Resultsmentioning

confidence: 70%

“…In particular, the fourth method which involves the use of microwave absorbing material (MAM) has been deployed widely along with shaping for military applications [1,3]. The MAM consists of dielectric/polymers such as epoxy, polyurethane, polyethylene terephthalate, rubbers, foams, polyaniline modified with conductive/magnetic fillers [1,[5][6][7][8][9]. Their absorption performance is dependent not only on their dielectric (permittivity) and magnetic (permeability) properties but also on thickness, frequency and structure [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Microwave absorption efficiency of poly (vinyl-butyral)/Ultra-thin nickel coated fly ash cenosphere composite

Angappan

Bora

Vinoy

et al. 2020

Surfaces and Interfaces

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The demand for light weight broadband microwave absorber is ever increasing for defence and civilian applications. A hollow microsphere filler based polymer composite system was studied in the present work owing to its attractive microwave absorbing characteristics. Poly (vinyl-butyral) (PVB) is chosen as the matrix and flyash cenosphere (FAC) is used as filler (hollow microsphere). FAC, being dielectric, is coated with Ni-P using electroless coating method to synthesize core-shell filler(magneto-dielectric). The dielectrics and microwave absorption study was carried out for the frequency range 8.2-18 GHz (X-band and Ku-Band). The minimum reflection loss (RL) was obtained to be −69 dB (thickness 1.5 mm) for~665 nm Ni coated FAC-PVB composite. Further, this composite has excellent microwave absorption efficiency (70 dB GHz/mm). Hence, an ultra-thin Ni coated FAC loaded PVB composite is a potential candidate for broad band microwave absorption.

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Section: Resultsmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Microwave absorption efficiency of poly (vinyl-butyral)/Ultra-thin nickel coated fly ash cenosphere composite

Angappan

Bora

Vinoy

et al. 2020

Surfaces and Interfaces

Self Cite

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“…In order to extend their applications in the EMI field, the electrically insulating GF need to be modified to improve their electrical conductivity [12]. Usually, coating metal or other conductive paints on the surface is an effective method to obtain electrically conductive GF [13,14]. To achieve high conductivity, a thick layer needs to be coated on the surface, which increase the cost and gain weight.…”

Section: Introductionmentioning

confidence: 99%

“…Figure8Ashowed the EMI SET of the composites in the measured frequency region(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) …”

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confidence: 99%

In-situ Growing Carbon Nanotubes on Nickel Modified Glass Fiber Reinforced Epoxy Composites for EMI Application

Liu

Dubrunfaut

et al. 2021

Appl Compos Mater

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Glass fiber (GF) reinforced polymer composites have attracted increasing attention due to their excellent performance. In this study, GF was coated by a thin layer of nickel, and then grafted carbon nanotubes (CNTs) array by a chemical vapor deposition method (CVD). The CNT contents can be varied by changing the CVD conditions. Three types of fillers, nickel coated GF (GF@Ni), GF with CVD grown CNTs (GF-CNTs) and nickel-coated GF with CVD grown CNTs (GF@Ni-CNTs), were used to prepare the epoxy composites. The electromagnetic interference shielding performances were investigated as a function of CNT contents. The GF@Ni-CNTs reinforced epoxy composites, which had the CNTs mass ratio of 9.2 wt% to the hybrids, showed the best EMI shielding performance among the composites. Their total EMI shielding effectiveness (SE) was higher than 35 dB in the range of 1-18 GHz, and above 50 dB in the X band. By incorporating the nickel layer on the GF surface, the same EMI performance can be achieved with lower CNTs content. For achieving a SE value of 35 dB in the X band, it

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“…Meanwhile, the products weigh much and are difficult for further processing, and subsequently have limited application range. [10,11,[18][19][20][21][22][23][24][25] For example, traditional sheet metal cases possess optimal EMI shielding effectiveness that is more than 60 dB. To yield the maximum EMI SE and economical production cost, the cases cannot have complex design and commonly have a square outlook.…”

Section: Introductionmentioning

confidence: 99%

A novel processing technique of carbon fiber/copper wire reinforced thermoplastic composites to improve EMI SE performance

Lin

et al. 2020

Polymer Composites

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This study aims to combine carbon fibers and copper metallic wires using a rotary twister, and the employment of wire coating technique reinforces the mechanical properties of carbon fibers, creating more feasible applications. The proposed carbon (C)/copper (Cu)/polyester (PET)/polypropylene (PP)/acrylic (A) woven fabrics preserve the electrical conductivity of carbon fibers and metallic wires while maintaining the thin and soft features of woven fabrics. In addition to good electrical conductivity, wire coating technique provides the coated wires with greater mechanical properties, including tensile strength, elongation, bending torsion, creep resistance, and wear-resistant property. The proposed manufacturing design contributes to an innovative production without interfering with the intrinsic properties of materials, which also broadens the application range of the electromagnetic interference shielding effectiveness products.

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Tailorable electromagnetic interference shielding using nickel coated glass fabric-epoxy composite with excellent mechanical property

Cited by 30 publications

References 28 publications

Microwave absorption efficiency of poly (vinyl-butyral)/Ultra-thin nickel coated fly ash cenosphere composite

Microwave absorption efficiency of poly (vinyl-butyral)/Ultra-thin nickel coated fly ash cenosphere composite

In-situ Growing Carbon Nanotubes on Nickel Modified Glass Fiber Reinforced Epoxy Composites for EMI Application

A novel processing technique of carbon fiber/copper wire reinforced thermoplastic composites to improve EMI SE performance

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