Prediction of electrical conductivity of carbon fiber-carbon nanotube-reinforced polymer hybrid composites

Haghgoo, Mojtaba; Ansari, R.; Hassanzadeh-Aghdam, Mohammad Kazem

doi:10.1016/j.compositesb.2019.03.046

Cited by 133 publications

(55 citation statements)

References 51 publications

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“…The calculation shows that the pe threshold is independent on the filler conductivity. This result agrees with the l results [40,46,52]. The contribution of the tunneling resistance to the electrical conductivity of phene-PPy composite was analyzed by considering the insulation thickness in t of 0.1-1 nm, intrinsic PPy conductivity of 10 S/m, volume fraction of approxima graphene diameter of 500 nm, and graphene conductivities of 10 5 and 10 7 shown in Figure 9, the effective electrical conductivity of the composite is inver portional to the insulation thickness.…”

Section: Resultssupporting

confidence: 85%

Computational Study of Graphene–Polypyrrole Composite Electrical Conductivity

et al. 2021

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In this study, the electrical properties of graphene–polypyrrole (graphene-PPy) nanocomposites were thoroughly investigated. A numerical model, based on the Simmons and McCullough equations, in conjunction with the Monte Carlo simulation approach, was developed and used to analyze the effects of the thickness of the PPy, aspect ratio diameter of graphene nanorods, and graphene intrinsic conductivity on the transport of electrons in graphene–PPy–graphene regions. The tunneling resistance is a critical factor determining the transport of electrons in composite devices. The junction capacitance of the composite was predicted. A composite with a large insulation thickness led to a poor electrochemical electrode. The dependence of the electrical conductivity of the composite on the volume fraction of the filler was studied. The results of the developed model are consistent with the percolation theory and measurement results reported in literature. The formulations presented in this study can be used for optimization, prediction, and design of polymer composite electrical properties.

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Section: Resultssupporting

confidence: 85%

Computational Study of Graphene–Polypyrrole Composite Electrical Conductivity

et al. 2021

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“…[16,17] Many studies have used the percolation theory concept to describe electrical properties in composite materials. [13,18] Near the percolation threshold, the classical percolation theory describes the electrical conductivity of CPCs by a power law and can be estimated by Equations (1) and (2) [19,20] :…”

Section: Introductionmentioning

confidence: 99%

Study of the electrical conduction process in natural rubber‐based conductive nanocomposites filled with cellulose nanowhiskers coated by polyaniline

et al. 2020

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In the present work, the electrical properties of a natural rubber-based nanocomposite (NR) filled with cellulose nanowhiskers (CNW) coated with polyaniline (PANI) were studied. We developed a statistic model that simulates nanocomposite microstructure and conductivity, calculated using the transfer matrix technique. A two-dimensional network of resistors representing a microstructure of both the insulating region (NR) and conductive fillers (cellulose nanowhiskers coated with polyaniline-CNWP) was developed. The conductance of bond between two neighboring sites in the CNWP filler and two neighboring sites of the NR matrix was estimated using Drude's equation and Dyre's formula, respectively. Results of the simulations show that the conduction process between two sites of NR follows the modified Dyre model (RFEB), while between two CNWP sites follows the modified Drude model. The theoretical-experimental adjustment shows that the electrical conduction process occurs via hopping and tunneling between states located inside the CNWP phase, randomly distributed in the rubber matrix.

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“…Owing to their great aspect ratio, excellent mechanical properties, electrical conductivity, and chemical/thermal stability, carbon nanotubes (CNTs) have been extensively studied by researchers in the field of materials science [ 1 , 2 , 3 , 4 , 5 ]. However, due to their extremely high surface energy, CNTs are difficult to evenly disperse during the preparation of CNT-doped composite materials, which has greatly limited their wide application in the field of composites [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Rapid Preparation of MWCNTs/Epoxy Resin Nanocomposites by Photoinduced Frontal Polymerization

et al. 2020

Materials

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Due to their excellent mechanical and thermal properties and medium resistance, epoxy/carbon nanotubes and nanocomposites have been widely used in many fields. However, the conventional thermosetting process is not only time- and energy-consuming, but also causes the agglomeration of nanofillers, which leads to unsatisfactory properties of the obtained composites. In this study, multi-walled carbon nanotubes (MWCNTs)/epoxy nanocomposites were prepared using UV photoinduced frontal polymerization (PIFP) in a rapid fashion. The addition of MWCNTs modified by a surface carboxylation reaction was found to enhance the impact strength and heat resistance of the epoxy matrix effectively. The experimental results indicate that with 0.4 wt % loading of modified MWCNTs, increases of 462.23% in the impact strength and 57.3 °C in the glass transition temperature Tg were achieved. A high-performance nanocomposite was prepared in only a few minutes using the PIFP approach. Considering its fast, energy-saving, and environmentally friendly production, the PIFP approach displays considerable potential in the field of the fast preparation, repair, and deep curing of nanocomposites and coatings.

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Prediction of electrical conductivity of carbon fiber-carbon nanotube-reinforced polymer hybrid composites

Cited by 133 publications

References 51 publications

Computational Study of Graphene–Polypyrrole Composite Electrical Conductivity

Computational Study of Graphene–Polypyrrole Composite Electrical Conductivity

Study of the electrical conduction process in natural rubber‐based conductive nanocomposites filled with cellulose nanowhiskers coated by polyaniline

Rapid Preparation of MWCNTs/Epoxy Resin Nanocomposites by Photoinduced Frontal Polymerization

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