A carbon-fabric/polycarbonate sandwiched film with high tensile and EMI shielding comprehensive properties: An experimental study

Tang, Weijin; Lu, Longsheng; Xing, Di; Fang, Hezhengzi; Liu, Qiang; Teh, Kwok Siong

doi:10.1016/j.compositesb.2018.06.026

Cited by 52 publications

(24 citation statements)

References 53 publications

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“…Similar to other types of carbon-epoxy composites, the SE can be further enhanced by incorporating more conductive inclusions. Tang et al [229] produced, by a wet papermaking process, mats from carbon fibres combined with PP/PE core/sheath fibres, which were sandwiched between two PC films, creating an ultra-thin flexible shielding material. The SE was examined for carbon-fibre lengths varying between 2 and 14 mm, although the difference did not exceed 5 dB, reaching a maximum value of 34 dB.…”

Section: Polymer Composites With Other Forms Of Carbon-fibre Reinforcementmentioning

confidence: 99%

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: Polymer Composites With Other Forms Of Carbon-fibre Reinforcementmentioning

confidence: 99%

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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“…where P in is the incident power, P out is the reflection power, SE R is the surface reflection, SE A is the electromagnetic absorption and SE M is the multiple reflection loss. 21,22…”

Section: Characterizationsmentioning

confidence: 99%

Extrusion/hot pressing processing and laminated layers of continuous carbon fiber/thermoplastic polyurethane knitted composites

Lin

Bao

2021

Polymer International

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Extrusion is employed to combine carbon fiber tows and thermoplastic polyurethane (TPU) blend. TPU-cladded carbon fibers undergo knitting to form carbon fiber knitted composites. Microscopic observation proves that the compound carbon fibers are composed of a double-layered structure with interfacial bonding and fiber axial alignment. In addition, the TPU coating can reduce friction during knitting, which provides the carbon fiber knitted composites with flexibility and resilience. Regarding the mechanical properties, the tensile strength is in direct proportion to the number of lamination layers. In particular, sixlayered knitted composites exhibit an optimal tensile strength of 43.72 MPa, whereas four-layered knitted composites exhibit optimal tensile elongation. Through the manufacturing and evaluations in this study, continuous carbon fibers can be fabricated via extrusion, thereby obtaining a knitted structure that can be laminated to strengthen the mechanical properties and electromagnetic interference shielding efficacy of the laminated composites. Large composites can also be achieved, which overcomes the limits of continuous carbon fibers in subsequent production.

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“…16,17 CFs reinforced polymer composites not only have excellent electrical conductivity and EMI SE but also significantly improve the melt strength and foaming ability of polypropylene (PP). 16,[18][19][20][21][22] Ameli et al 23 found that injection flow rate and melt temperature played an important role on the CF/polypropylene (PP) foams' conductivity through their effects on foam morphology, and he also investigated the EMI shielding properties of CF/PP composites and showed that MIM technology can improve its EMI SE, up to 24.9 dB with 10 vol% CF. 24 Jung et al 25 found that the EMI SE is not only affected by the CF content, but also the CF length.…”

Section: Introductionmentioning

confidence: 99%

“…As MIM technology can prepare porous structural materials and make the filler distribution more uniform, it was introduced to obtain higher electrical conductivity and EMI performance with lower content conductive fillers 16,17 . CFs reinforced polymer composites not only have excellent electrical conductivity and EMI SE but also significantly improve the melt strength and foaming ability of polypropylene (PP) 16,18–22 . Ameli et al 23 found that injection flow rate and melt temperature played an important role on the CF/polypropylene (PP) foams' conductivity through their effects on foam morphology, and he also investigated the EMI shielding properties of CF/PP composites and showed that MIM technology can improve its EMI SE, up to 24.9 dB with 10 vol% CF 24 .…”

Section: Introductionmentioning

confidence: 99%

Effect of microstructure induced by microcellular injection molding on electromagnetic interference shielding properties

Liu

Guan

et al. 2021

J of Applied Polymer Sci

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Preparing lightweight and versatile products is the unremitting goal of industry to save resources and energy. Lightweight carbon fiber reinforced polypropylene (CF/PP) composite foams with high‐performance electromagnetic interference (EMI) shielding materials were fabricated by microcellular injection molding (MIM) technology. The average length and distribution of CF in CF/PP composite foams were examined. Thanks to the introduction of foaming process, the average CF length of composite foams was 33.98% longer than that of solids, which effectively enhanced the electrical conductivity and EMI shielding properties. The effect of shot size, gas content, and injection rate on the electrical conductivity and EMI properties was investigated. With melt shot size of 2/3 of the cavity volume, gas content of 0.5 wt% N2 and injection rate of 100 mm/s, optimal cellular structure of the composite material was obtained. The EMI shielding effectiveness (SE) reaches 36.94 dB, which is the highest value achieved by using MIM technology to the best of the authors' knowledge. In addition, the mechanical properties of cellular structure can still maintain good values, with the tensile strength and impact strength improved by 15.3% and 14.03%, respectively.

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A carbon-fabric/polycarbonate sandwiched film with high tensile and EMI shielding comprehensive properties: An experimental study

Cited by 52 publications

References 53 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

Extrusion/hot pressing processing and laminated layers of continuous carbon fiber/thermoplastic polyurethane knitted composites

Effect of microstructure induced by microcellular injection molding on electromagnetic interference shielding properties

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