Effective reinforcement of electrical conductivity and strength of carbon nanotube fibers by silver-paste-liquid infiltration processing

2013 ◽  
Vol 15 (11) ◽  
pp. 3861 ◽  
Author(s):  
X. H. Zhong ◽  
R. Wang ◽  
Y. Y. Wen
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Silver Paste ◽  
Liquid Infiltration ◽  
Carbon Nanotube Fibers ◽  
Effective Reinforcement

Carbon nanotube fibers with high specific electrical conductivity: Synergistic effect of heteroatom doping and densification

Carbon ◽  
2021 ◽  
Author(s):  
Seungki Hong ◽  
Jungtae Nam ◽  
Seunggyu Park ◽  
Dongju Lee ◽  
Min Park ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Synergistic Effect ◽  
Specific Electrical Conductivity ◽  
Heteroatom Doping ◽  
Carbon Nanotube Fibers

Liquid Infiltration into Carbon Nanotube Fibers: Effect on Structure and Electrical Properties

ACS Nano ◽  
2013 ◽  
Vol 7 (10) ◽  
pp. 8412-8422 ◽  
Author(s):  
Jing Qiu ◽  
Jeronimo Terrones ◽  
Juan J. Vilatela ◽  
Mary E. Vickers ◽  
James A. Elliott ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrical Properties ◽  
Liquid Infiltration ◽  
Carbon Nanotube Fibers

scholarly journals Gas infiltration of bromine to enhance the electrical conductivity of carbon nanotube fibers

2018 ◽  
Vol 159 ◽  
pp. 138-144 ◽  
Author(s):  
Ping Wang ◽  
Dandan Liu ◽  
Jingyun Zou ◽  
Yuanhang Ye ◽  
Ligan Hou ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Carbon Nanotube Fibers

High electrical conductivity of double-walled carbon nanotube fibers by hydrogen peroxide treatments

2016 ◽  
Vol 4 (1) ◽  
pp. 74-82 ◽  
Author(s):  
A. Morelos-Gómez ◽  
M. Fujishige ◽  
S. Magdalena Vega-Díaz ◽  
I. Ito ◽  
T. Fukuyo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Hydrogen Peroxide ◽  
Electrical Resistivity ◽  
Carbon Nanotube ◽  
Small Diameter ◽  
High Electrical Conductivity ◽  
Carbon Nanotube Fibers ◽  
Fiber Sample

H2O2treatment can decrease the electrical resistivity of double walled carbon nanotube fibers. The experimental observations suggest that small diameter carbon nanotubes are removed from the fiber sample.

Enhancement of electrical conductivity of carbon nanotube fibers by copper sulfide plating

2015 ◽  
Vol 16 (4) ◽  
pp. 769-773 ◽  
Author(s):  
Soyoung Kim ◽  
Sunhwa Kim ◽  
Young Ho Kim ◽  
Bon-Cheol Ku ◽  
Youngjin Jeong
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Copper Sulfide ◽  
Carbon Nanotube Fibers

Wet spinning of continuous polymer-free carbon-nanotube fibers with high electrical conductivity and strength

2016 ◽  
Vol 9 (5) ◽  
pp. 055101 ◽  
Author(s):  
Ken Mukai ◽  
Kinji Asaka ◽  
Xueli Wu ◽  
Takahiro Morimoto ◽  
Toshiya Okazaki ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Free Carbon ◽  
Wet Spinning ◽  
High Electrical Conductivity ◽  
Carbon Nanotube Fibers

Application of Conductive Carbon Nanotube Fibers and Composites: Gas Sensor

2013 ◽  
Author(s):  
Padraig G. Moloney ◽  
Enrique V. Barrera
Keyword(s):  
Carbon Nanotube ◽  
Gas Sensor ◽  
Carbon Nanotube Fibers

scholarly journals Influence of Carbon Nanotube-Pretreatment on the Properties of Polydimethylsiloxane/Carbon Nanotube-Nanocomposites

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1355
Author(s):  
Astrid Diekmann ◽  
Marvin C. V. Omelan ◽  
Ulrich Giese
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Mechanical Performance ◽  
Softening Effect ◽  
Electrical Percolation ◽  
Optimum Parameters ◽  
Lauryl Ether ◽  
Solvent Residues ◽  
Electrical Percolation Threshold ◽  
Filler Dispersion

Incorporating nanofillers into elastomers leads to composites with an enormous potential regarding their properties. Unfortunately, nanofillers tend to form agglomerates inhibiting adequate filler dispersion. Therefore, different carbon nanotube (CNT) pretreatment methods were analyzed in this study to enhance the filler dispersion in polydimethylsiloxane (PDMS)/CNT-composites. By pre-dispersing CNTs in solvents an increase in electrical conductivity could be observed within the sequence of tetrahydrofuran (THF) > acetone > chloroform. Optimization of the pre-dispersion step results in an AC conductivity of 3.2 × 10−4 S/cm at 1 Hz and 0.5 wt.% of CNTs and the electrical percolation threshold is decreased to 0.1 wt.% of CNTs. Optimum parameters imply the use of an ultrasonic finger for 60 min in THF. However, solvent residues cause a softening effect deteriorating the mechanical performance of these composites. Concerning the pretreatment of CNTs by physical functionalization, the use of surfactants (sodium dodecylbenzenesulfonate (SDBS) and polyoxyethylene lauryl ether (“Brij35”)) leads to no improvement, neither in electrical conductivity nor in mechanical properties. Chemical functionalization enhances the compatibility of PDMS and CNT but damages the carbon nanotubes due to the oxidation process so that the improvement in conductivity and reinforcement is superimposed by the CNT damage even for mild oxidation conditions.

Theoretical and experimental investigation of the wet-spinning process for mechanically strong carbon nanotube fibers

2021 ◽  
Vol 412 ◽  
pp. 128650
Author(s):  
Hyeon Dam Jeong ◽  
Seo Gyun Kim ◽  
Gyeong Min Choi ◽  
Minji Park ◽  
Bon-Cheol Ku ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Carbon Nanotube ◽  
Wet Spinning ◽  
Spinning Process ◽  
Carbon Nanotube Fibers

Dual percolations of electrical conductivity and electromagnetic interference shielding in progressively agglomerated CNT/polymer nanocomposites

2021 ◽  
pp. 108128652110214
Author(s):  
Xiaodong Xia ◽  
George J. Weng
Keyword(s):  
Experimental Data ◽  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Percolation Threshold ◽  
Polymer Nanocomposites ◽  
Electromagnetic Interference ◽  
Effective Medium Theory ◽  
Scale Model ◽  
Shielding Effectiveness ◽  
Emi Shielding

Recent experiments have revealed two distinct percolation phenomena in carbon nanotube (CNT)/polymer nanocomposites: one is associated with the electrical conductivity and the other is with the electromagnetic interference (EMI) shielding. At present, however, no theories seem to exist that can simultaneously predict their percolation thresholds and the associated conductivity and EMI curves. In this work, we present an effective-medium theory with electrical and magnetic interface effects to calculate the overall conductivity of a generally agglomerated nanocomposite and invoke a solution to Maxwell’s equations to calculate the EMI shielding effectiveness. In this process, two complex quantities, the complex electrical conductivity and complex magnetic permeability, are adopted as the homogenization parameters, and a two-scale model with CNT-rich and CNT-poor regions is utilized to depict the progressive formation of CNT agglomeration. We demonstrated that there is indeed a clear existence of two separate percolative behaviors and showed that, consistent with the experimental data of poly-L-lactic acid (PLLA)/multi-walled carbon nanotube (MWCNT) nanocomposites, the electrical percolation threshold is lower than the EMI shielding percolation threshold. The predicted conductivity and EMI shielding curves are also in close agreement with experimental data. We further disclosed that the percolative behavior of EMI shielding in the overall CNT/polymer nanocomposite can be illustrated by the establishment of connective filler networks in the CNT-poor region. It is believed that the present research can provide directions for the design of CNT/polymer nanocomposites in the EMI shielding components.

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