Enhancement of thermal and electrical properties of carbon nanotube polymer composites by magnetic field processing

Choi, Eun Sang; Brooks, J. S.; Eaton, D. L.; Al-Haik, Marwan; Hussaini, M. Y.; Garmestani, Hamid; Li, D.; Dahmen, K. H.

doi:10.1063/1.1616638

Cited by 486 publications

(252 citation statements)

References 19 publications

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“…The PNCs have attracted great attention due to their drastically enhanced properties [3][4][5]. For instance, thermally insulating polymers can be transformed into thermal conductors after reinforcing with carbon nanotubes (CNTs) [6][7][8]. Moreover, PNCs have demonstrated improved mechanical, gas barrier, solvent resistance, and flammability properties compared to the corresponding neat matrices [3,4,9].…”

Section: Introductionmentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

157

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Composite materials and especially polymer composites are widely used in daily life and different industries due to their vastly different properties and design flexibility. It is known that the properties of the composites are strongly related to the properties of its constituents. However, it has been reported in many studies, experimentally and by simulations, that the characteristics of the composites do not follow the rule of mixing. It means that in addition to properties of the constituents, there are other parameters affecting the final physicochemical properties of composites. The interfacial interactions between fillers and host is one of the factors which can strongly affect the properties of the composite. In this review, we summarized the type of interactions between the constituents, their improvement techniques, interaction measurement methods, and the effects of interfacial interactions on thermal, mechanical, and electrical properties of composites.

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Section: Introductionmentioning

confidence: 99%

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Kashfipour

Mehra

Zhu

2018

Adv Compos Hybrid Mater

157

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“…Among these additives studied CNT may have the potential to improve the mechanical and thermal properties of MgB 2 wires since CNTs have been used as component for a number of composites to improve their mechanical properties. [17,18] Fosshein et al report an enhanced flux pinning in Bi 2 Sr 2 CaCu 2 O 8+x superconductors with embedded CNTs. [19] Yang et al found a significant enhancement in J c (H) for high temperature superconductor by introducing nanorods as columnar pinning centers in to the composites.…”

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confidence: 99%

Alignment of Carbon Nanotube Additives for Improved Performance of Magnesium Diboride Superconductors

et al. 2006

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The rapid progress on MgB 2 superconductor since its discovery [1] has made this material a strong competitor to low and high temperature superconductors (HTS) for applications with a great potential to catch the niche market such as in magnetic resonant imaging (MRI). Thanks to the lack of weak links and the two-gap superconductivity of MgB 2 [2,3] a number of additives have been successfully used to enhance the critical current density, J c and the upper critical field, H c2 . [4][5][6][7][8][9][10][11][12] Carbon nanotubes (CNTs) have unusually electrical, mechanical and thermal properties [13][14][15][16] and hence is an ideal component to fabricate composites for improving their performance. To take advantages of the extraordinary properties of CNTs it is important to align CNTs in the composites.Here we report a method of alignment of CNTs in the CNT/MgB 2 superconductor composite wires through a readily scalable drawing technique. The aligned CNT doped MgB 2 wires show an enhancement in magnetic J c (H) by more than an order of magnitude in high magnetic fields, compared to the undoped ones. The CNTs have also significantly enhanced the heat transfer and dissipation. CNTs have been used mainly in structural materials, but here the advantage of their use in functional composites is shown and this has wider ramifications for other functional materials.

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“…The alignment of CNTs in a polymer matrix using magnetic field was reported previously [5][6][7][8]. We conducted comparative experiments using dispersed and non-dispersed CNTs.…”

Section: Alignment Of Cntsmentioning

confidence: 99%

“…Many studies have been reported on the alignment of CNTs by magnetic methods [4][5][6][7][8]. High magnetic fields made it possible to visualize magnetic effects on diamagnetic materials such as CNTs [9].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous alignment and micropatterning of carbon nanotubes using modulated magnetic field

Tsuda¹,

Sakka

2009

Science and Technology of Advanced Materials

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We report simultaneous alignment and micropatterning of carbon nanotubes (CNTs) using a high magnetic field. It is important to prepare well-dispersed CNTs for alignment and patterning because CNT aggregation obstructs alignment. In magnetic field, highly anisotropic CNTs rotate in the direction stabilized in energy. Owing to their diamagnetic nature, CNTs suspended in a liquid medium are trapped in a weak magnetic field generated by a field modulator; meanwhile, they align to the applied strong magnetic field. The alignment has been achieved not only in polymers but also in ceramic and silicone composites.

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Enhancement of thermal and electrical properties of carbon nanotube polymer composites by magnetic field processing

Cited by 486 publications

References 19 publications

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

A review on the role of interface in mechanical, thermal, and electrical properties of polymer composites

Alignment of Carbon Nanotube Additives for Improved Performance of Magnesium Diboride Superconductors

Simultaneous alignment and micropatterning of carbon nanotubes using modulated magnetic field

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