Hybrids of conductive polymer nanocomposites

Al‐Saleh, Mohammed H.; Saadeh, Walaa

doi:10.1016/j.matdes.2013.06.072

Cited by 47 publications

(16 citation statements)

References 31 publications

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“…CNT/ABS showed smaller percolation threshold and higher EMI SE than CNF/ABS and CB/ABS. Al‐Saleh and Saadeh also studied the EMI SE evolution of CNT:CF/ABS and CNT:CB/ABS hybrid composites, prepared by solution processing, with same total filler amount (5 wt %) but different component fractions. For all the analyzed systems the SE increased with increasing CNT content and no synergetic effect was found.…”

Section: Introductionmentioning

confidence: 99%

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

Schmitz

Silva

Ramôa

et al. 2018

J of Applied Polymer Sci

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This work evaluates the influence of two types of carbonaceous fillers, carbon black (CB) and carbon nanotubes (CNTs), on the electrical, electromagnetic, and rheological properties of composites based on poly(acrylonitrile‐co‐butadiene‐co‐styrene) (ABS) prepared by the melt mixing. Electrical conductivity, electromagnetic shielding efficiency (EMI SE) in the X‐band frequency range (8–12.4 GHz), and melt flow index (MFI) results showed that ABS/CNT composites exhibit higher electrical conductivity and EMI SE, but lower MFI when compared to ABS/CB composites. The electrical conductivity of the binary composites showed an increase of around 16 orders of magnitude, when compared to neat ABS, for both fillers. Binary composites with 5 and 15 wt % of filler showed an EMI SE of, respectively, −44 and −83 dB for ABS/CNT, and −9 and −34 dB for ABS/CB. MFI for binary composites with 5 wt % were 15.45 and 0.55 g/10 min for CB and CNT, respectively. Hybrid composites ABS/CNT.CB with 3 wt % total filler and fraction 50:50 and 75:25 showed good correlation between EMI SE and MFI. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46546.

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Section: Introductionmentioning

confidence: 99%

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

Schmitz

Silva

Ramôa

et al. 2018

J of Applied Polymer Sci

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“…Conductive polymer composites play important roles in the modern science and technology [1][2][3][4][5][6][7]. Therefore, the electrical and mechanical properties of the composites have attracted more and more interests these years [8][9][10][11][12][13][14][15]. The compression causes the changes in the conductive network of the composite [16][17][18][19][20][21][22][23], which results in the variation of the electrical property of the composite (e.g., the resistance, capacitance, etc.).…”

Section: Introductionmentioning

confidence: 99%

Compressive capacitance relaxation of carbon black filled silicone rubber composite

Wang

2017

Polymer Composites

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The changes in the capacitance of carbon black filled silicone rubber composite during the compressive stress relaxation, which is defined as the “compressive capacitance relaxation,” is researched. During the compressive stress relaxation, the capacitance of the composite increases gradually and tends to be stable over time. Based on the viscoelastic theory, the mathematical model for the compressive capacitance relaxation is established. The capacitance relaxation times and the stable normalized capacitance decrease with the increase of the conductive phase content. The capacitance relaxation times hold constant, and the stable normalized capacitance increases with the increase of the initial stress. POLYM. COMPOS., 39:3446–3451, 2018. © 2017 Society of Plastics Engineers

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“…Many studies have reported on the usage of the immiscible polymer blend in thermoset/thermoplastic to provide a double percolation condition in order to lower the P c . In general, thermoset/thermoplastic blend systems can be prepared using several methods, including, melt blending, high temperature mixing, and solvent deposition . Studies are focused on the dispersion of filler and the optimum filler loading in relation to the electrical conductivity of the composites.…”

Section: Introductionmentioning

confidence: 99%

Influence of thermoplastic spacer on the mechanical, electrical, and thermal properties of carbon black filled epoxy adhesives

Phua

Teh

Ghani

et al. 2016

Polymers for Advanced Techs

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A new approach of mimicking the selective localization mechanism of conductive filler into one phase of immiscible polymer blend system is proposed here, where a moderate fine of polymethylmethacrylate (PMMA) powder is prepared and used as the spacer in the carbon black (CB) filled epoxy adhesives system that can be applied at room temperature. The main purpose of PMMA‐spacer is to promote the formation of conductive networks via aiding the 3D self‐assembly of CB filler, selectively in the continuous phase of epoxy. PMMA‐spacer content ranged from 10, 20, 30, 40, and 50 vol.% were investigated under electrical, mechanical, and thermal properties for both unfilled and 15 vol.% CB filled system. With the incorporation of 10 vol.% PMMA‐spacer, the filled system shows promising improvement in electrical conductivity, with three order of magnitude increment at 15 vol.% CB loading. Toughening mechanism of epoxy was observed, where crack deflection upon the PMMA‐spacer is observed under scanning electron microscopy characterization and agreed by fracture toughness calculation. Thermal stability and coefficient of thermal expansion were improved at the minimum addition of PMMA‐spacer content, at 10 vol.%, while a small reduction in flexural strength is observed because of the poor interface interaction between the PMMA‐spacer and epoxy matrix. Interestingly, a limited interaction between the PMMA‐spacer with epoxy at the curing temperature of 100°C is observed, indicating the solubility of PMMA‐spacer in epoxy before crosslinking process occurred. Copyright © 2016 John Wiley & Sons, Ltd.

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Hybrids of conductive polymer nanocomposites

Cited by 47 publications

References 31 publications

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

Hybrid composites of ABS with carbonaceous fillers for electromagnetic shielding applications

Compressive capacitance relaxation of carbon black filled silicone rubber composite

Influence of thermoplastic spacer on the mechanical, electrical, and thermal properties of carbon black filled epoxy adhesives

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