Manufacturing and characterization of carbon fibre/epoxy composite prepregs containing carbon nanotubes

Siddiqui, Naveed A.; Khan, Shafi Ullah; Cheng, Po-Tai; Li, Chi Yin; Kim, Jang Kyo

doi:10.1016/j.compositesa.2011.06.005

Cited by 98 publications

(33 citation statements)

References 44 publications

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“…It can be elucidated from Figure 9 that a better dispersion of the CNTs results in a lower T g which seems to be caused by a reduced curing degree of the 'N' system. A possible explanation is that the catalytic effect of CNTs on curing [43,44] expedites the second stage of the epoxy curing reaction which is dominantly diffusion-controlled. This results in a lower crosslinking degree and hence a lower T g .…”

Section: Solid (Cured) Nanocomposite (Stage 4)mentioning

confidence: 99%

Evolution of carbon nanotube dispersion in preparation of epoxy-based composites: From a masterbatch to a nanocomposite

Aravand¹,

Lomov²,

Verpoest³

et al. 2014

Express Polym. Lett.

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Abstract. The state of carbon nanotube (CNT) dispersion in epoxy is likely to change in the process of composite production. In the present work CNT dispersion is characterized at different stages of nanocomposite preparation: in the original masterbatch with high CNT concentration, after masterbatch dilution, in the process of curing and in the final nanocomposite. The evaluation techniques included dynamic rheological analysis of the liquid phases, optical, environmental and charge contrast scanning electron microscopy, electrochemical impedance spectroscopy and dynamic mechanical analysis. The evolution of the CNT dispersion was assessed for two CNT/epoxy systems with distinctly different dispersion states induced by different storage time. Strong interactions between CNT clusters were revealed in the masterbatch with a longer storage time. Upon curing CNT clusters in this material formed a network-like structure. This network enhanced the elastic behaviour and specific conductivity of the resulting nanocomposite, leading to a partial electrical percolation after curing.

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Section: Solid (Cured) Nanocomposite (Stage 4)mentioning

confidence: 99%

Evolution of carbon nanotube dispersion in preparation of epoxy-based composites: From a masterbatch to a nanocomposite

Aravand¹,

Lomov²,

Verpoest³

et al. 2014

Express Polym. Lett.

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“…The Epoxy/DWCNTs mixture we prepared can be used in a prepregger as shown in the work of Siddiqui et al [42], to impregnate dry carbon fibers and prepare prepregs. An alternative way of using a prepregger is to impregnate the dry carbon fibers using resin film infusion which is suitable for lab-scale production of prepregs.…”

Section: Processing Of Carbon Fiber/epoxy/dwcnts Laminate and Microscmentioning

confidence: 99%

Processing and electrical characterization of a unidirectional CFRP composite filled with double walled carbon nanotubes

Sawi

Olivier

Demont

et al. 2012

Composites Science and Technology

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. Processing and electrical characterization of a unidirectional CFRP composite filled with double walled carbon nanotubes. Composites Science and Technology, Elsevier, 2012, vol. 73, pp. 19-26. 10.1016/j.compscitech.2012 Carbon nanotubes represent new emergent multifunctional materials that have potential applications for structural and electrically conductive composites. In the current paper we present a suitable technique for the integration of Double Walled Carbon Nanotubes (DWCNTs) in a unidirectional Carbon Fiber Reinforced Polymer (CFRP) with high volume content of carbon fiber. We showed that the electrical conductivity of the laminates versus temperature follows a non-linear variation which can be well described by the Fluctuation-Induced Tunneling Conduction (FITC) model. The parameters of this model for CFRP/ DWCNTs and CFRP without DWCNTs were determined using best fit curves of the experimental data. This study has shown that DWCNTs have strong influence in the conductivity through laminate thickness. However, there are no significant effects on the electrical conductivity measured in the other two principle directions of the composite laminate. Furthermore, it was found that electron conduction mechanism of carbon fibers is dominated by the FITC.

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“…This fact could be attributed to mechanical interlocking that the nanomaterials sticking into the composite interface region [9,29,30]. In addition, the higher density of functional groups on the surface of the carbon fibers and increased fiber surface area may have also contributed to the enhancement of the adhesion properties, allowing a more efficient load transfer leading to increased shear strength [43,33]. To further understand the interphase behavior and enhancement mechanism of grafted carbon fiber composites, the fracture surfaces of the composite specimens were examined by SEM, as shown in Fig.…”

Section: Ilss Of Carbon Fibers/epoxy Compositesmentioning

confidence: 94%

Polyhedral oligomeric silsesquioxanes/carbon nanotube/carbon fiber multiscale composite: Influence of a novel hierarchical reinforcement on the interfacial properties

Zhang

Wang

Liu

et al. 2015

Applied Surface Science

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Manufacturing and characterization of carbon fibre/epoxy composite prepregs containing carbon nanotubes

Cited by 98 publications

References 44 publications

Evolution of carbon nanotube dispersion in preparation of epoxy-based composites: From a masterbatch to a nanocomposite

Evolution of carbon nanotube dispersion in preparation of epoxy-based composites: From a masterbatch to a nanocomposite

Processing and electrical characterization of a unidirectional CFRP composite filled with double walled carbon nanotubes

Polyhedral oligomeric silsesquioxanes/carbon nanotube/carbon fiber multiscale composite: Influence of a novel hierarchical reinforcement on the interfacial properties

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