Multiwalled Carbon Nanotubes-Incorporated Polyurethane Nanocomposites

Polyurethane was used as adhesive due to high reactivity, high flexibility, and mechanical properties. Electrically conductive adhesives (ECAs) are an alternative to tin-lead solder in order to provide conductive paths between two electrical device components, which typically consist of a polymeric resin that contributes physical and mechanical properties, and conductive fillers. However, ECAs have low electrical conductivity and unstable network due to large contact points of the few micrometer-sized metal particles. In order to overcome these restrictions, multiwalled carbon nanotubes (MWCNTs) with high aspect ratio and smaller nanometer scale can be used as conductive fillers. In this study, ECAs were based on polyurethane filled with two kinds of fillers, raw MWCNTs and acid treated MWCNTs, respectively. Electrical conductivity was measured by using four-point probe. Morphology and dispersibility of fillers were observed by scanning electron microscopy and transmission electron microscopy.

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Enhanced mechanical properties and high electrical conductivity in multiwalled carbon nanotubes reinforced copper matrix nanolaminated composites

Materials Science and Engineering A ◽

10.1016/j.msea.2018.05.091 ◽

2018 ◽

Vol 729 ◽

pp. 452-457 ◽

Cited By ~ 16

Author(s):

Jiapeng Liu ◽

Ding-Bang Xiong ◽

Zhanqiu Tan ◽

Genlian Fan ◽

Qiang Guo ◽

...

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Multiwalled Carbon Nanotubes ◽

Copper Matrix ◽

High Electrical Conductivity ◽

Multiwalled Carbon

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Effect of Acid- and Ultraviolet/Ozonolysis-Treated MWCNTs on the Electrical and Mechanical Properties of Epoxy Nanocomposites as Bipolar Plate Applications

Journal of Nanomaterials ◽

10.1155/2013/717459 ◽

2013 ◽

Vol 2013 ◽

pp. 1-8 ◽

Cited By ~ 13

Author(s):

Nishata Royan Rajendran Royan ◽

Abu Bakar Sulong ◽

Jaafar Sahari ◽

Hendra Suherman

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Conductive Polymer ◽

Bipolar Plate ◽

Department Of Energy ◽

Multiwalled Carbon ◽

The Us ◽

Electrical Conductivities ◽

Conductive Fillers

Carbon nanotubes (CNTs) have a huge potential as conductive fillers in conductive polymer composites (CPCs), particularly for bipolar plate applications. These composites are prepared using singlefiller and multifiller reinforced multiwalled carbon nanotubes (MWCNTs) that have undergone a chemical functionalization process. The electrical conductivity and mechanical properties of these composites are determined and compared between the different functionalization processes. The results show that UV/O3-treated functionalization is capable of introducing carboxylic functional groups on CNTs. Acid-treated CNT composites give low electrical conductivity, compared with UV/O3-treated and As-produced CNTs. The in- and through-plane electrical conductivities and flexural strength of multifiller EP/G/MWCNTs (As-produced and UV/O3-treated) achieved the US Department of Energy targets. Acid-treated CNT composites affect the electrical conductivity and mechanical properties of the nanocomposites. These data indicate that the nanocomposites developed in this work may be alternative attributers of bipolar plate requirements.

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Effect of Injection Conditions on the Electrical Conductivity of MWCNTs/PC Conductive Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.983.105 ◽

2014 ◽

Vol 983 ◽

pp. 105-109 ◽

Cited By ~ 1

Author(s):

Li Jun Wang ◽

Jian Hui Qiu ◽

Eiichi Sakai ◽

Xiao Wei Wei

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Scanning Electron Microscopy ◽

Multiwalled Carbon Nanotubes ◽

Interfacial Interaction ◽

Multiwalled Carbon ◽

Injection Speed ◽

Conductive Composites ◽

Scanning Electron

Multiwalled carbon nanotubes/Polycarbonate (MWCNTs/PC) nanocomposites were successfully prepared by melting mixing. With the injection speed and temperature changed, different MWCNTs contents MWCNTs/ PC composites were prepared. The electrical conductivity of nanocomposites was compared with different injection speeds and injection temperatures. It was found that the electrical conductivity of the MWCNTs/PC nanocomposites was decreased with MWNTs content increasing, and were both affected by the injection speed and temperature. Besides, at the vicinity of the surface of samples, the resistivity of MWCNTs/PC nanocomposites was the maximum; the closer to the samples inner, the resistivity was smaller and more stabilized. The microstructure and morphology of composites were analyzed by Scanning Electron Microscopy (SEM) techniques, and the MWCNTs’ dispersion in PC matrix and the interfacial interaction between MWCNTs and PC were analyzed.

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ELECTROCONDUCTIVE ADHESIVES BASED ON POLYURETHANE WITH MULTIWALLED CARBON NANOTUBES

Modern Physics Letters B ◽

10.1142/s0217984909021776 ◽

2009 ◽

Vol 23 (31n32) ◽

pp. 3739-3745 ◽

Cited By ~ 3

Author(s):

YESEUL KIM ◽

SE YOUN CHO ◽

YOUNG SOO YUN ◽

HYOUNG-JOON JIN

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Multiwalled Carbon Nanotubes ◽

Conductive Adhesives ◽

Multiwalled Carbon ◽

Electrically Conductive ◽

Pristine Mwcnts ◽

Transmission Electron ◽

Polyurethane Matrix

In the present study, we prepared and characterized electrically conductive adhesives based on polyurethane filled with two kinds of multiwalled carbon nanotubes (MWCNTs), viz. pristine MWCNTs and acid treated MWCNTs, respectively. The influence of the type of filler on the dispersibility within the polyurethane matrix and the corresponding electrical conductivity is investigated. The electrical conductivity of the prepared specimens was measured using a four-point probe. The morphology and dispersibility of the fillers were observed by field emission scanning electron microscopy and transmission electron microscopy.

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Investigation of the influence of functionalized multiwalled carbon nanotubes on electrical conductivity and mechanical properties of epoxy composite

Vestnik Тomskogo gosudarstvennogo universiteta Khimiya ◽

10.17223/24135542/5/2 ◽

2016 ◽

pp. 15-23

Author(s):

Egor А. Yakovlev ◽

Nikolay А. Yakovlev ◽

Igor А. Ilyinykh ◽

Igor N. Burmistrov ◽

Nikolay V. Gorshkov

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Multiwalled Carbon Nanotubes ◽

Epoxy Composite ◽

Multiwalled Carbon ◽

Functionalized Multiwalled Carbon Nanotubes

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Functionalized multiwalled carbon nanotubes for UV coating

Pigment & Resin Technology ◽

10.1108/prt-10-2015-0104 ◽

2017 ◽

Vol 46 (1) ◽

pp. 1-13

Author(s):

Tuba Çakır Çanak ◽

Ömer Faruk Vurur ◽

İ. Ersin Serhatlı

Keyword(s):

Electron Microscopy ◽

Mechanical Properties ◽

Carbon Nanotubes ◽

Multiwalled Carbon Nanotubes ◽

Analytical Techniques ◽

Tensile Tests ◽

Mechanical Analysis ◽

Multiwalled Carbon ◽

Content Type ◽

Moulding Process

Purpose This paper aims to investigate effects of acrylic functionalisation of multiwalled carbon nanotubes (MWCNTs) on properties of carbon nanotubes/epoxy nanocomposites. Design/methodology/approach A number of analytical techniques, including Fourier transform infrared spectroscopy, Raman spectroscopy, scanning electron microscopy and transmission electron microscopy, were used to assess the effects of acid treatment on MWCNTs. Ultraviolet-curable coatings were fabricated by sonication and cast moulding process. The mechanical properties of MWCNTs/epoxy composites at different weight fractions were evaluated by performing tensile tests and dynamic mechanical analysis tests. Also, gel contents were examined. Findings It was found that addition of nanotubes monomer to epoxy formulations had significant effect on the viscoelastic and mechanical properties. Practical implications Improving dispersion and alignment of MWCNTs in the composite matrix will contribute to the development of resin/MWCNTs nanocomposites and promote the applications. Originality/value The paper establishes a method to introduce MWCNTs into epoxy matrix as a monomer to enhance the photo curable and dispersion properties of the MWCNT/epoxy films.

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Electrical and Mechanical Properties of Ethylene Vinyl Acetate Based Composites

Materials Science Forum ◽

10.4028/www.scientific.net/msf.714.193 ◽

2012 ◽

Vol 714 ◽

pp. 193-199 ◽

Cited By ~ 2

Author(s):

Klaudia Czaniková ◽

Zdenko Špitalský ◽

Igor Krupa ◽

Mária Omastová

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Multiwalled Carbon Nanotubes ◽

Vinyl Acetate ◽

Polymer Matrix ◽

Ethylene Vinyl Acetate ◽

Multiwalled Carbon ◽

Scanning Electron ◽

Properties Of Composites

In this study various composites based on the commercial ethylene vinyl acetate polymer matrix and multiwalled carbon nanotubes were prepared by casting from solution in the form of thick films. The degree of dispergation of carbon nanotubes in the polymer matrix was examined by scanning electron microscopy. Electrical conductivity and mechanical properties of those composites were investigated. It was observed that the electrical conductivity of composites increases with an increase of multiwalled carbon nanotubes content. The mechanical properties of composites were only slightly changed when compared with properties of neat ethylene vinyl acetate matrix.

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