Journal ArticleDOI
Synergistic effects in network formation and electrical properties of hybrid epoxy nanocomposites containing multi-wall carbon nanotubes and carbon black
TLDR
In this paper, electrical conductivity measurements and microscopical analysis of epoxy nanocomposites including multi-wall carbon nanotubes (MWCNT) and carbon black (CB) were performed.Abstract:
Epoxy nanocomposites including multi-wall carbon nanotubes (MWCNT) and carbon black (CB) were produced and investigated by means of electrical conductivity measurements and microscopical analysis. Varying the weight fraction of the nanoparticles, electrical percolation behaviour was studied. Due to synergistic effects in network formation and in charge transport the inclusion of both MWCNT and CB in the epoxy matrix leads to an identical electrical behaviour of this ternary nanocomposite system compared to the binary MWCNT-epoxy system. For both types of nanocomposites an electrical percolation threshold of around 0.025 wt% and 0.03 wt% was observed. Conversely, the binary CB nanocomposites exhibit a three-times higher percolation threshold of about 0.085 wt%. The difference between the binary MWCNT-epoxy and the ternary CB/MWCNT-epoxy in electrical conductivity at high filler concentrations (e.g. 0.5 wt%) turns out to be less than expected. Thus, a considerable amount of MWCNTs can be replaced by CB without changing the electrical properties.read more
Citations
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Dispersion and functionalization of carbon nanotubes for polymer-based nanocomposites: a review
TL;DR: In this paper, a review of the current understanding of carbon nanotubes and CNT/polymer nanocomposites with two particular topics: (i) the principles and techniques for CNT dispersion and functionalization and (ii) the effects of CNT-based functionalization on the properties of polymers.
Journal ArticleDOI
Size and synergy effects of nanofiller hybrids including graphene nanoplatelets and carbon nanotubes in mechanical properties of epoxy composites
Sanjukta Chatterjee,F. Nafezarefi,Nyan-Hwa Tai,Lukas Schlagenhauf,Frank Nüesch,Frank Nüesch,B.T.T. Chu +6 more
TL;DR: In this article, two different dimensions of graphene nanoplatelets were used with flake sizes of 5 mu m and 25 mu m to investigate the influence of nanofiller size on composite properties.
Journal ArticleDOI
An assessment of the science and technology of carbon nanotube-based fibers and composites
TL;DR: In this paper, the authors examined the recent advancements in the science and technology of carbon nanotube (CNT)-based fibers and composites, and made an assessment according to the hierarchical structural levels of CNTs used in composites.
Journal ArticleDOI
Progress on the morphological control of conductive network in conductive polymer composites and the use as electroactive multifunctional materials
TL;DR: In this article, the morphological control of conductive networks in conductive polymer composites (CPCs) has been extensively investigated as an important issue for the preparation of high performance CPCs.
Journal ArticleDOI
Three-Dimensional Printing of Multifunctional Nanocomposites: Manufacturing Techniques and Applications.
TL;DR: A comprehensive review is carried out on the use of metal- and carbon-based nanomaterials incorporated into polymers or hydrogels for the manufacturing of 3D structures, mostly at the microscale, using different 3D-printing techniques.
References
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Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
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Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this paper, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
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Introduction to percolation theory
Dietrich Stauffer,Amnon Aharony +1 more
TL;DR: In this article, a scaling solution for the Bethe lattice is proposed for cluster numbers and a scaling assumption for cluster number scaling assumptions for cluster radius and fractal dimension is proposed.
Journal ArticleDOI
Ultra-low electrical percolation threshold in carbon-nanotube-epoxy composites
TL;DR: The experimental percolation threshold for the aligned carbon nanotubes used in this paper represents the lowest threshold observed for carbon-nanotube-based polymer composites yet reported.
Journal ArticleDOI
Nanocomposites in context
TL;DR: In this paper, the state of the art in processing, characterization, and analysis/modeling of nanocomposites is presented with a particular emphasis on identifying fundamental structure/property relationships.