Electrophysical Properties of Composites Based on Polyethylene Modified with Multi-Walled Carbon Nanotubes with High Content of Fe–Co-Catalyst

In this work, composites based on yttria-stabilized zirconia (3Y-TZP), with additives of 1, 5 and 10 wt. % multi-walled carbon nanotubes (MWCNTs) were investigated. Samples were obtained by spark plasma sintering at a temperature of 1500 °C. It was found that MWCNTs retain their structure after high-temperature sintering, they are located along the grain boundaries of ZrO2, forming a network structure. Found that the addition of 1 wt. % MWCNTs increase the relative density of the composite from 98.3 % to 99.0 %. It is noted that nanotubes can significantly affect the phase composition of composites. Additive 5 wt. % MWCNT partially limits the monoclinic-tetragonal phase transition of ZrO2, and the addition of 10 wt. % MWCNTs leads to the formation of a cubic phase of zirconium carbide. It was found that the fracture toughness of the composite with 10 wt. % MWCNTs increases from 4.0 to 5.7 MPa·m1/2.

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Growth Valley Dividing Single- and Multi-Walled Carbon Nanotubes: Combinatorial Study of Nominal Thickness of Co Catalyst

Japanese Journal of Applied Physics ◽

10.1143/jjap.47.1961 ◽

2008 ◽

Vol 47 (4) ◽

pp. 1961-1965 ◽

Cited By ~ 26

Author(s):

Kazunori Kakehi ◽

Suguru Noda ◽

Shigeo Maruyama ◽

Yukio Yamaguchi

Keyword(s):

Carbon Nanotubes ◽

Co Catalyst ◽

Nominal Thickness ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Electrically Conductive Composite based on Functionalized Carbon Nanotubes/Epoxy Resin

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.f4313.049620 ◽

2020 ◽

Vol 9 (4) ◽

pp. 1401-1404

Keyword(s):

Carbon Nanotubes ◽

Electrical Conductivity ◽

Epoxy Resin ◽

Isopropyl Alcohol ◽

Electrophysical Properties ◽

Electrically Conductive ◽

Functionalized Carbon Nanotubes ◽

Multi Walled Carbon Nanotubes ◽

Electrically Conductive Composite ◽

Walled Carbon Nanotubes

This work is devoted to the study of the effect of carbon nanotubes functionalization on the electrical conductivity of composite materials based on them. Carbon nanotubes were functionalized by treatment in nitric acid and isopropyl alcohol. Changes in the morphology of multi-walled carbon nanotubes during liquid-phase functionalization were investigated using Auger-electron microscopy. Samples of composite material on the basis of initial and functionalized carbon nanotubes and epoxy resin were prepared and the concentration dependence of electrical conductivity using the four-probe method was studied. The study reveals the effect of functionalization in various solutions on the electrophysical properties of the obtained carbon nanotubes/epoxy composites.

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Effect of structure transformation on electrophysical properties of multi-walled carbon nanotubes

10.1063/5.0034206 ◽

2020 ◽

Author(s):

V. V. Bolotov ◽

V. E. Kan ◽

E. V. Knyazev ◽

S. N. Povoroznyuk

Keyword(s):

Carbon Nanotubes ◽

Electrophysical Properties ◽

Structure Transformation ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

Effect Of Structure

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Molecular Interactions in PA6, LCP and their Blend Incorporated with Functionalized Carbon Nanotubes

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.447-448.634 ◽

2010 ◽

Vol 447-448 ◽

pp. 634-638 ◽

Cited By ~ 3

Author(s):

Henry Kuo Feng Cheng ◽

Nanda Gopal Sahoo ◽

Lin Li ◽

Siew Hwa Chan ◽

Jian Hong Zhao

Keyword(s):

Carbon Nanotubes ◽

Polymer Matrices ◽

Traditional Role ◽

Factors Affecting ◽

Crystal Polymer ◽

Reinforcing Fillers ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

Functionalized Mwcnts ◽

Properties Of Composites

Multi-walled carbon nanotubes (MWCNTs) were functionalized with a carboxyl group (-COOH) to improve their dispersion in a nylon6 (PA6) matrix, a liquid crystal polymer (LCP) and their blend. This functionalized MWCNTs also achieved better interfacial adhesions with both polymer matrices and with both phases in the blend. The dispersion of MWCNT-COOH in the polymer matrices and their interfacial interactions with polymer molecules were found to be the most important factors affecting the properties of composites. Moreover, studies on morphological, rheological, and mechanical properties confirmed that a better miscibility between PA6 and LCP had been constituted in the presence of MWCNT-COOH. Therefore, it is observed that the functionalized MWCNTs not only played the traditional role as reinforcing fillers in the polymer matrices, but also performed a novel role as compatibilizers for their blend.

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