Improvements of the Electrical Conductivity and EMI Shielding Efficiency for the Polycarbonate/ABS/Carbon Fiber Composites Prepared by Pultrusion Process

Ryu, Seung Chan; Kim, Jae Young; Cho, Choonglai; Kim, Woo Nyon

doi:10.1007/s13233-020-8024-1

Cited by 15 publications

(10 citation statements)

References 19 publications

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“…However, 18 and 20 dB were measured for the lower aspect ratio of 25, for the same corresponding sample thicknesses. Similar observations were made by Ryu et al [131], who noted that doubling the aspect ratio to 200 contributed to an over five-fold increase in SE to 38 dB, when the carbon fibres were added to polycarbonate/ABS resin at a 20 phr concentration. A comprehensive study on the effect of carbon-fibre aspect ratio was conducted by Li et al [125], who compared the SE of multiple composites with the filler aspect ratio varying between 10 and 300.…”

Section: Carbon-fibre Length and Processing Conditionssupporting

confidence: 85%

“…This results not only in the higher absolute SE values attained by composites with longer carbon fibres for a given content, but also in the enhanced rate of SE increase with fibre loading [126,128,136,148], allowing us to achieve the desired SE with a lower amount of carbon fibres. Multiple studies have been dedicated to examining the SE of composites with varying carbon-fibre lengths [125,126,131,136,143,155,160,162,166,170]. In the work of Jou et al [126], the SE of Nylon-6,6 composites filled with carbon fibres with aspect ratios of Fig.…”

Section: Carbon-fibre Length and Processing Conditionsmentioning

confidence: 99%

“…The length of the dispersed carbon fibres is mostly determined by the choice of processing method, compounding technique and the way the fibres are added to the polymer matrix. Ryu et al [131] compared the SE of samples prepared by the pultrusion and screw extrusion methods and observed an SE over 30 dB lower for the latter, which was attributed to an over two times lower aspect ratio, as a result of increased shear stresses in the screw extruder. Composites fabricated with a single screw extruder in turn exhibit better SE than with a double screw extruder, due to less mechanical work being imposed on the fibres and hence less damage [134].…”

Section: Carbon-fibre Length and Processing Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Recent advances in electromagnetic interference shielding properties of carbon-fibre-reinforced polymer composites—a topical review

Mikinka

Siwak

2021

J Mater Sci: Mater Electron

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Using carbon-fibre-reinforced polymer (CFRP) composites for electromagnetic interference (EMI) shielding has become a rapidly emerging field. This state-of-the-art review summarises all the recent research advancements in the field of electromagnetic shielding properties of CFRP composites, with exclusive attention paid to experimental work. It focuses on (1) important mechanisms and physical phenomena in the shielding process for anisotropic carbon-fibre composites and (2) shielding performance of CFRP materials as reported in the literature, with important performance-affecting parameters. The key properties which directly influence the shielding performance are identified, the most critical being the carbon-fibre concentration along with length for discontinuous carbon-fibre-filled polymers and the lay-up for continuous carbon-fibre-reinforced composites. The effect of adding conductive inclusions such as metal or carbon nanotubes is also reviewed. It is emphasised that processing conditions are strongly linked with the shielding properties of a composite. This is a first review, which covers all the recent advancements in the field of shielding properties of carbon-fibre-reinforced composites, with detailed analysis of factors influencing these properties and clear distinction between continuous and discontinuous reinforcement. It is shown that CFRP composites make a good candidate as an EMI shielding enclosure material.

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Section: Carbon-fibre Length and Processing Conditionssupporting

confidence: 85%

Section: Carbon-fibre Length and Processing Conditionsmentioning

confidence: 99%

Section: Carbon-fibre Length and Processing Conditionsmentioning

confidence: 99%

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Recent advances in electromagnetic interference shielding properties of carbon-fibre-reinforced polymer composites—a topical review

Mikinka

Siwak

2021

J Mater Sci: Mater Electron

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“…The EMI poses a severe problem, affects the functioning of electronic devices, and is also harmful to humans. [ 1–4 ] EMI shielding is required to maintain the operating environment for these devices. Electrically conductive or magnetic materials have been used to cover the EMI due to their capability of interacting with electromagnetic waves.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Kaushal

Singh

2020

Polymer Composites

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The present study tells about dc conductivity, mechanical, and electromagnetic interference (EMI) shielding response of multiwall carbon nanotubes (MWCNT) reinforced polypropylene nanocomposites prepared via melt processing technique using a twin-screw extruder. The tensile strength of the nanocomposites shows improvement by 27% compared to the sample with no filler added (PCN0). The incorporation of MWCNT leads to a boost in electrical conductivity from 2.07 × 10 −10 to 4.21 × 10 −6 S/cm. The maximum EMI shielding effectiveness obtained at 5 wt% of MWCNT load valued −21.07 in the X-band (8.2-12.4 GHz) frequency range, measured using the vector network analyzer. The results concluded that the prepared nanocomposite is suitable to be used as a mechanically durable shielding material to fulfill the industrial needs of shielding.

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“…We further compare the EMI SE of the composite film with the state-of-the-art materials. As shown in Figure a, the EMI SE of our composite film is among the top tier of EMI shielding materials reported in recent literature, including silver nanowires, , copper nanowires, nickel fibers, , carbon fibers, − stainless steel fibers, , silver sponges, CNT sponges, − graphene foams, , and rGO nanocomposites. − With a physical density of 0.921 g·cm –3 , the specific EMI SE of the composite film reaches to 5371.0 dB·g·cm –2 , which is equally impressive compared to its peers (Figure b). ,,,, …”

Section: Resultsmentioning

confidence: 69%

Copper-Coated Reduced Graphene Oxide Fiber Mesh-Polymer Composite Films for Electromagnetic Interference Shielding

Yang

Zhu

et al. 2020

ACS Appl. Nano Mater.

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Expected to become mainstream in the electronics industry, flexible electronics still face major challenging issues. For polymeric-based flexible electronic substrates in particular, these challenges include a lack of electromagnetic shielding capability and poor heat dissipation. Here, we report a highly flexible and thermally conductive macroscopic polydimethylsiloxane (PDMS) polymer film embedded with a copper-coated reduced graphene oxide (rGO) fiber mesh. The rGO fibers are assembled into 3D fiber meshes and electroplated with micrometer-thick copper coatings, displaying excellent electrical and thermal conductivities. Oriented in the horizontal and perpendicular directions within the PDMS polymeric matrix, the fiber mesh serves as a highly electrically and thermally conductive backbone through the in-plane direction. Meanwhile, the fiber mesh also effectively shields electromagnetic interference in the X-band without causing thermal damage. The macroscopic film remains electrically insulated in the through-plane direction. Utilizing both the favorable thermal and electrical properties of the graphene fiber-based mesh and the flexibility of the PDMS matrix, our film may exhibit potential for flexible electronics applications such as wearable electronic thermal management and flexible microwave identification devices.

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Improvements of the Electrical Conductivity and EMI Shielding Efficiency for the Polycarbonate/ABS/Carbon Fiber Composites Prepared by Pultrusion Process

Cited by 15 publications

References 19 publications

Recent advances in electromagnetic interference shielding properties of carbon-fibre-reinforced polymer composites—a topical review

Recent advances in electromagnetic interference shielding properties of carbon-fibre-reinforced polymer composites—a topical review

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Copper-Coated Reduced Graphene Oxide Fiber Mesh-Polymer Composite Films for Electromagnetic Interference Shielding

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