Improvement in electromagnetic interference shielding effectiveness of cement composites using carbonaceous nano/micro inerts

Khushnood, Rao Arsalan; Ahmad, Sajjad; Savi, Patrizia; Tulliani, Jean‐Marc; Giorcelli, Mauro; Ferro, Giuseppe Andrea

doi:10.1016/j.conbuildmat.2015.03.069

Cited by 112 publications

(45 citation statements)

References 39 publications

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“…This indicates that, for the WPC with rGO‐CF, the SE of WPC was mainly affected by the SE A . Firstly, the residual oxygen functional groups and defects remaining on the rGO sheets were favorable to the dispersion of CF in matrix and could build of a more effective electric network . Electrical conductivity of WPC with 4% rGO‐CF was 7.5 S/m in Fig.…”

Section: Resultsmentioning

confidence: 97%

Electromagnetic interference shielding properties of wood–plastic composites filled with graphene decorated carbon fiber

Chen

Teng

Zhao³

et al. 2016

Polymer Composites

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Carbon fiber (CF), graphene oxide (GO)‐deposited CF (GO‐CF), and reduced GO‐deposited CF (rGO‐CF) were introduced into wood plastic composite (WPC). The electromagnetic interference (EMI) shielding effectiveness (SE) of WPC in the X‐band region (8.2–12.4 GHz) was studied. The results showed that GO‐CF and rGO‐CF were more effective than CF in improving EMI SE of WPC. The rGO sheets were beneficial to the dispersion of CF in matrix and could build of a more effective electric network. The WPC with 4 wt% rGO‐CF and a shielding thickness of 4 mm had the SE of 29 dB. Compared with the SE of WPC with CF (23 dB), WPC with rGO‐CF had a 26% increase. The WPC filled with rGO‐CF has a promising prospect in EMI shielding materials. POLYM. COMPOS., 39:2110–2116, 2018. © 2016 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 97%

Electromagnetic interference shielding properties of wood–plastic composites filled with graphene decorated carbon fiber

Chen

Teng

Zhao³

et al. 2016

Polymer Composites

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“…The electrical resistivity results of CF1 and CF2 filled cement mortar composites with w/c of 0.45 are reported in Figure 12 of conducting carbon fibers in the matrix increases (55,56). An occurrence of enormous decrease in the value of resistivity at 0.15 wt% inclusion of 12mm carbon fibers, is the sign of establishment of conducting mechanism inside the cementitious matrix due to the induced carbon fibers.…”

Section: Electrical Resistivity Of Carbon Fiber Reinforced Cement Mormentioning

confidence: 94%

Theoretical and experimental analysis of multifunctional high performance cement mortar matrices reinforced with varying lengths of carbon fibers

et al. 2018

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An effective scheme to formulate high performance and multifunctional cement based mortar composites reinforced with varying lengths of carbon fibers has been devised. The detailed investigations pertaining to the fracture response of composites in cracks initiation and progression phases, their conducting mechanism and volumetric stability were performed with varying loads of 6mm and 12mm long carbon fibers at two different w/c ratios i.e. 0.45 and 0.50. The experiments concluded that an optimum addition of carbon fibers results in substantial improvement of fracture properties alongside significant reduction in electrical resistivity and total plastic shrinkage. The field emission scanning electron microscopy of the cryofractured specimen revealed crack arresting actions of uniformly distributed carbon fibers through successful crack bridging and branching phenomenon.

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“…Many of the fillers that are being used in these polymer composite include carbon nanotubes which are known to have exceptionally high electrical conductivity. Other fillers include particles which have been coated with silver, metal fibres, and carbon particles [15,[43][44][45][46]. Many of the studies conducted on the fabrication of EMI shielding materials have shown that for high SE, a good conducting network needs to be present within the material.…”

Section: Introductionmentioning

confidence: 99%

Review of Polymer Composites with Diverse Nanofillers for Electromagnetic Interference Shielding

et al. 2020

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Polymer matrix composites have generated a great deal of attention in recent decades in various fields due to numerous advantages polymer offer. The advancement of technology has led to stringent requirements in shielding materials as more and more electronic devices are known to cause electromagnetic interference (EMI) in other devices. The drive to fabricate alternative materials is generated by the shortcomings of the existing metallic panels. While polymers are more economical, easy to fabricate, and corrosion resistant, they are known to be inherent electrical insulators. Since high electrical conductivity is a sought after property of EMI shielding materials, polymers with fillers to increase their electrical conductivity are commonly investigated for EMI shielding. Recently, composites with nanofillers also have attracted attention due to the superior properties they provide compared to their micro counterparts. In this review polymer composites with various types of fillers have been analysed to assess the EMI shielding properties generated by each. Apart from the properties, the manufacturing processes and morphological properties of composites have been analysed in this review to find the best polymer matrix composites for EMI shielding.

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Improvement in electromagnetic interference shielding effectiveness of cement composites using carbonaceous nano/micro inerts

Cited by 112 publications

References 39 publications

Electromagnetic interference shielding properties of wood–plastic composites filled with graphene decorated carbon fiber

Electromagnetic interference shielding properties of wood–plastic composites filled with graphene decorated carbon fiber

Theoretical and experimental analysis of multifunctional high performance cement mortar matrices reinforced with varying lengths of carbon fibers

Review of Polymer Composites with Diverse Nanofillers for Electromagnetic Interference Shielding

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