The electrical conductivity of carbon nanotube/carbon black/polypropylene composites prepared through multistage stretching extrusion

Wen, Meicheng; Sun, Xiaoyang; Su, Lin; Shen, Jiabin; Li, Jiang; Guo, Shaoyun

doi:10.1016/j.polymer.2012.02.003

Cited by 169 publications

(112 citation statements)

References 39 publications

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“…This feature reveals CNT linking the CB aggregates forming conductive networks. These networks were also observed in other studies 27,34,36 . CB morphology is "grape-like", consisting of individual nanoparticles 34 .…”

Section: Simulation Of Hybrid Nanocompositessupporting

confidence: 87%

“…These networks were also observed in other studies 27,34,36 . CB morphology is "grape-like", consisting of individual nanoparticles 34 . CNT, due its high aspect ratio, can act as conducting links between the CB particles 34,37 .…”

Section: Simulation Of Hybrid Nanocompositessupporting

confidence: 87%

“…The primary particle size and surface area, usually defined by the supplier, are not sufficient to describe the distribution phenomenon in polymer matrices. It is known that the provision of these particles is "grape-like", with different aggregate sizes 34 . This geometry precludes representative simulation of this primary structure, because, if the circular unitary particles of CB were randomly placed by the simulator, this trend of aggregation would be hardly expected.…”

Section: Simulation Of Composites With Carbon Blackmentioning

confidence: 99%

“…CNT, due its high aspect ratio, can act as conducting links between the CB particles 34,37 . In our study, we can describe the morphology as a "grape-cluster-like" 34 conductive network in which CB particles serve as grapes and CNT acts as branches.…”

Section: Simulation Of Hybrid Nanocompositesmentioning

confidence: 99%

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Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black

2017

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Modeling electrical conductivity of polymer composites with conductive fillers has great applicability to predict conductive materials behavior. In this study, the electrical behavior of simple and hybrid systems prepared from Carbon Black (CB) and Carbon Nanotubes (CNT) was studied.There have been few advances reported in the literature regarding the modeling of hybrid systems, which motivated the development of this study. More specifically, a program was developed with the intention to describe the electric percolation threshold and the effect of synergism between the conductive fillers. Simulation was performed using the Monte Carlo method and Fortran programming language, considering concentration and geometry of conductive fillers to the system in two dimensions. Finally, simulation results were compared with the experimental results and this method proved to be effective in predicting the systems percolation threshold, being an important contribution to predict material behavior, which allows reducing the number of samples to be prepared in an experimental study.

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Section: Simulation Of Hybrid Nanocompositessupporting

confidence: 87%

Section: Simulation Of Hybrid Nanocompositessupporting

confidence: 87%

Section: Simulation Of Composites With Carbon Blackmentioning

confidence: 99%

Section: Simulation Of Hybrid Nanocompositesmentioning

confidence: 99%

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Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black

2017

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“…Very recently, Guo et al studied the conductivity of polypropylene nanocomposites made using a similar device based on single extrusion [27,28] but no mechanical measurements have been performed.…”

Section: Introductionmentioning

confidence: 99%

Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties

Miquelard‐Garnier

Guinault

Fromonteil

et al. 2013

Polymer

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. a b s t r a c tMultilayer coextrusion was used to disperse Carbon Nanotubes (CNT) in polypropylene (PP). The dilution of commercially available masterbatches using a twin-screw extruder was first applied to produce several formulations, which were then mixed with PP using a multilayer coextrusion device to obtain films or pellets with CNT concentrations between 0.1 and 1%wt. The influence of the specific mechanical energy (SME) during the dilution step, of the addition of a compatibilizer, and of the multilayer tool on the CNT dispersion within the matrix was highlighted. The effect of the dispersion on the thermomechanical properties of the resulting materials was studied. We showed notably that films containing 0.2%wt CNT, 1%wt of PPgAm, prepared at high SME presented a Young's modulus increase of 25e30% without significant decrease in the elongation at break. These results, using low amounts of CNT and industrially available devices, may show a new path for producing nanocomposites.

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Materials for Polymer Nanocomposites

Abraham

George²,

Müller

et al. 2016

Rheology and Processing of Polymer Nanocomposites

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The electrical conductivity of carbon nanotube/carbon black/polypropylene composites prepared through multistage stretching extrusion

Cited by 169 publications

References 39 publications

Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black

Assessment of Percolation Threshold Simulation for Individual and Hybrid Nanocomposites of Carbon Nanotubes and Carbon Black

Dispersion of carbon nanotubes in polypropylene via multilayer coextrusion: Influence on the mechanical properties

Materials for Polymer Nanocomposites

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