Effect of graphite sizes and carbon black content on flowability of the injection molded conductive composite material

Mahyoedin, Yovial; Sahari, Jaafar; Mukhtar, Andanastuti; Mohammad, Norhamidi; Suryadimal,

doi:10.1051/matecconf/201824801007

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Dari data respon tersebut, seperti yang ditunjukkan pada tabel 6, dapat disimpulkan bahwa jumlah serbuk yang kecil menghasilkan viskositas campuran yang rendah. Penelitian sebelumnya menunjukkan bahwa semakin banyak jumlah filler (dalam hal ini SCK), semakin sukar campuran mengalir karena jumlah resin yang makin sedikit, yang berarti bahwa viskositas campuran akan makin besar [10].…”

Section: Hasil Dan Pembahasanunclassified

Karakteristik Reologi Komposit Serbuk Cangkang Kemiri dan Poliuretan

Mahyoedin

Dewi

Marthiana

et al. 2019

JKTM

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AbstrakPenelitian ini bertujuan menentukan karakteristik reologi komposit serbuk cangkang kemiri (SCK) berukuran 45µm<d<75µm dan resin Poliuretan (PU) dengan komposisi bervariasi, yaitu 5%:95%, 10%:90%, 15%:85%. Pencampuran SCK dan PU dilakukan dengan mechanical mixer dengan kecepatan dan lama pengadukan masing-masing 10, 15 dan 20 menit dan 100, 200 dan 250 rpm. Reologi komposit diperoleh dengan pengujian rotational viscometer dan dioptimasi dengan metoda Taguchi. Penelitian menunjukkan viskositas terkecil 218,66 mPa.s, ditemukan pada komposit dengan komposisi 5% 95%, waktu pengadukan 15 menit dan kecepatan pengadukan 100 rpm. Kata kunci: Serbuk cangkang kemiri, Poliuretan, Viskositas, Reologi. Abstract This study aimed to determine the composite rheological characteristics of candlenut shells (SCK) with particle size of 45µm <d <75µm and polyurethane (PU) resins with varying compositions, namely 5%: 95%, 10%: 90%, 15%: 85%. Mixing of SCK and PU is carried out using mechanical mixers with a speed and stirring time of 10, 15 and 20 minutes and 100, 200 and 250 rpm, respectively. Composite rheology was obtained by rotational viscometer testing and optimized by the Taguchi method. The results showed the smallest viscosity of 218.66 mPa.s, found in composites with a composition of 5% 95%, stirring time of 15 minutes and stirring speed of 100 rpm. Keywords: candlenut shell, polyurethane, viscosity, rheology

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Section: Hasil Dan Pembahasanunclassified

Karakteristik Reologi Komposit Serbuk Cangkang Kemiri dan Poliuretan

Mahyoedin

Dewi

Marthiana

et al. 2019

JKTM

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“…NaOH has been used to remove the hydrogen bonding in the network structure of fibers, thus increasing fiber's surface roughness [5], [6], [22]. Many studies have been emphasizing the improvement on mechanical properties of composites after treating the fibers with NaOH [3], [23]- [25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Loading and Alkali Treatment on Rice Straw Fiber Reinforced Composite for Automotive Bumper Beam Application

Saidah¹,

Susilowati²,

Nofendri³

2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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Natural fiber-reinforced composites (NFC) comprise the principal subject for the wide-ranging research in the material industries with lower costs. The use of rice straw as the reinforcement material for polymer composites intended for car bumper application is reported. This study was aimed to evaluate the composite mechanical properties of tensile and impact strength, as well as the microscopic structures, under the alkali treatment of NaOH and 10, 20, 30 and 40% (v/v) fiber loading variations. The results showed that the mechanical properties of alkali-treated composites were improved relative to the untreated fiber-reinforced composites. The highest tensile strength was observed at 14.75 MPa together with the highest impact strength at 23.52 J cm -1 for the alkali-treated and 30% fiber loading composites. This makes the rice straw fiber-reinforced composites at 30% fiber loading competitive against the standard commercial bumper with a maximum tensile strength of 8.08 MPa and impact strength of 23.31 J cm-1. The precise claim of alkali conduct with sodium hydroxide indicates the improvement of tensile and impact strength of the RSF-reinforced composites. This study also shows fiber loading provides various mechanical properties of the composites. The rice straw fiber, at 30% fiber loading attached with the alkali treatment comprises an alternative material to reinforce a polymer composite for automotive bumper application with a viable tensile and effect strong point against a marketable bumper.

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Processing methods for conductive polymer composite bipolar plates: Effect on plate quality and performance

2023

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Conductive polymer composites (CPCs) have been identified as viable replacements for graphite and metals for polymer electrolyte membrane fuel cell (PEMFC) bipolar plates (BPs). One important factor, apart from composite formulation, that affects the quality and properties of CPC BPs is the processing route. Therefore, understanding the possible processing methods for different matrix-filler combinations and their effects on the quality and properties of the plates can help in controlling and improving the final performance of BPs. This paper reviews the blending and molding techniques for CPC BPs, with a focus on relationship between formulation and processing method. The effects of processing route and conditions on microstructural features of CPC BPs, which affect the performance of the plates are also discussed. Finally, directions for further studies with potential to advance the development of quality and high-performance CPC BPs are highlighted. Identified key areas for further research include control of filler orientation to improve through-plane conductivity, correlation between processing parameters and dimensional accuracy of molded plates, and additive manufacturing of composite BPs.

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Effect of graphite sizes and carbon black content on flowability of the injection molded conductive composite material

Cited by 4 publications

References 10 publications

Karakteristik Reologi Komposit Serbuk Cangkang Kemiri dan Poliuretan

Karakteristik Reologi Komposit Serbuk Cangkang Kemiri dan Poliuretan

Effect of Fiber Loading and Alkali Treatment on Rice Straw Fiber Reinforced Composite for Automotive Bumper Beam Application

Processing methods for conductive polymer composite bipolar plates: Effect on plate quality and performance

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