Effect of fiber feeding route upon extrusion process on the electromagnetic, mechanical, and thermal properties of nickel-coated carbon fiber/polypropylene composites

Jung, Sebeom; Cho, Donghwan

doi:10.1016/j.compositesb.2020.107861

Cited by 23 publications

(14 citation statements)

References 33 publications

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“…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%

“…On the other hand, feeding carbon fibres together with solid polymer pellets exposes them to larger stresses, making them more prone to breaking. Jung et al [170] investigated the effect of hopper and side feeding on the SE. They found that an improved SE with the side feeding technique was as a result of longer fibre distribution, due to less shearing force between the moving screws in the extrusion process.…”

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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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 Conditionsmentioning

confidence: 99%

Section: Carbon-fibre Length and Processing Conditionsmentioning

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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“…Upon the extrusion process, the fiber feeding routes, such as hopper feeding and side feeding may significantly influence the composite properties. Jung and Cho [12] studied the effect of a carbon fiber feeding route during the extrusion process, on the electromagnetic, mechanical, and thermal properties of nickel-coated carbon fiber/polypropylene composites. They reported that the composites, with side-fed carbon fiber, exhibited the electromagnetic interference shielding effectiveness, tensile, flexural, and heat deflection temperature properties, higher than those with hopper-fed carbon fiber.…”

Section: Introductionmentioning

confidence: 99%

Effects of Alkali-Treatment and Feeding Route of Henequen Fiber on the Heat Deflection Temperature, Mechanical, and Impact Properties of Novel Henequen Fiber/Polyamide 6 Composites

Kim

Cho

2022

J. Compos. Sci.

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In the present study, novel natural fiber composites, consisting of untreated and alkali(NaOH)-treated chopped henequen fibers and polyamide 6 (PA6), were produced by the hopper feeding and side feeding of henequen fiber, upon the extrusion process, and then by an injection molding process, respectively. The effects of the alkali treatment and fiber feeding route on the heat deflection temperature, tensile, flexural, and Izod impact properties of henequen fiber/PA6 composites were investigated. The composite properties were increased by alkali treatment and further increased, considerably, by side feeding of the henequen fiber, being supported by inspecting the fiber length distribution and the fracture surface of resulting composites. It was clarified that the side feeding of chopped henequen fibers was preferable to increase the composite properties, compared to hopper feeding. This study may be worthy of processing and manipulating the properties of novel natural fiber composites, consisting of agave plant-derived henequen fiber and engineering plastic PA6.

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“…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. Relatively long CF length distribution can be obtained by using side feed in extrusion process, with EMI SE up to 28 dB.…”

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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Effect of fiber feeding route upon extrusion process on the electromagnetic, mechanical, and thermal properties of nickel-coated carbon fiber/polypropylene composites

Cited by 23 publications

References 33 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

Effects of Alkali-Treatment and Feeding Route of Henequen Fiber on the Heat Deflection Temperature, Mechanical, and Impact Properties of Novel Henequen Fiber/Polyamide 6 Composites

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

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