Dynamic elastic modulus of single-walled carbon nanotubes in different thermal environments

2007 ◽  
Vol 365 (1-2) ◽  
pp. 144-148 ◽  
Author(s):  
T.T. Liu ◽  
X. Wang
Keyword(s):  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Single Walled Carbon Nanotubes ◽  
Dynamic Elastic Modulus ◽  
Single Walled Carbon ◽  
Thermal Environments ◽  
Walled Carbon Nanotubes

On the mechanical properties of functionally graded materials reinforced by carbon nanotubes

2017 ◽  
Vol 232 (9) ◽  
pp. 1632-1646 ◽  
Author(s):  
Saeed Rouhi ◽  
Seyed H Alavi
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Functionally Graded Materials ◽  
Volume Fraction ◽  
Single Walled Carbon Nanotubes ◽  
Functionally Graded ◽  
Graded Materials ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

In this paper, the elastic properties of functionally graded materials reinforced by single-walled carbon nanotubes are studied. Three different matrices, including steel-silicon, iron-alumina and alumina-zirconia are considered. Besides, the effects of nanotube length, radius and volume fraction on the Young’s modulus of functionally graded matrices reinforced by single-walled carbon nanotubes are investigated. It is observed that short nanotubes not only cannot increase the longitudinal elastic modulus of the matrices, but sometimes decrease their elastic modulus. Of the three selected matrices, steel-silicon matrix would have the most enhancement. Investigation of the effect of nanotube volume fraction on the mechanical properties of nanocomposites shows that increasing the volume fraction of long single-walled carbon nanotube results in increasing the elastic modulus of the nanocomposites.

Research on the Elastic Modulus of Single-Walled Carbon Nanotubes

2012 ◽  
Vol 591-593 ◽  
pp. 935-939
Author(s):  
Hong Mei Zheng ◽  
Zhi Shan Yuan ◽  
Yu Juan Wang ◽  
Zi Gang Jiang
Keyword(s):  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Critical Diameter ◽  
Covalent Bond ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Brenner Potential ◽  
Essential Prerequisite ◽  
Elastic Modules

The calculation of elastic modulus of carbon nanotubes is an essential prerequisite for future Micro-nano devices fabrication that based on carbon nanotubes. The interaction potential of C-C covalent bond in single-walled carbon nanotubes (SWCNTs) is described by Terrsoff-Brenner potential in this paper. The elastic modulus of SWCNTs is ranged from 1.1078TPa to 1.23789TPa with the diameter increases from 0.3176nm to 2.0626nm by molecular dynamics (MD) simulation. The critical diameters of armchair and zigzag nanotubes are 1nm and 0.6nm.The elastic modulus changes with the diameter of nanotubes increasing clearly when the diameter smaller than the critical diameter, but the value of elastic modules tends to convergence when the diameter of nanotubes larger than the critical diameter.

Preparation of Single-Walled Carbon Nanotube Solids and Their Mechanical Properties

2005 ◽  
Vol 20 (10) ◽  
pp. 2609-2612 ◽  
Author(s):  
Go Yamamoto ◽  
Yoshinori Sato ◽  
Toru Takahashi ◽  
Mamoru Omori ◽  
Toshiyuki Hashida ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Processing Condition ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) were successfully solidified without any additives by hot-pressing and spark plasma sintering (SPS). The elastic modulus and fracture strength of the SWCNT solid prepared by the SPS method were about three and two times higher than that of the hot-pressed SWCNT solid prepared under the same processing condition. The enhancement of the mechanical properties of the SPS specimen may be due to the formation of comparatively stronger bond between SWCNTs, which is possibly brought about by the spark plasma generated in the SPS process.

Dispersions and fibers of carbon nanotubes

2000 ◽  
Vol 633 ◽  
Author(s):  
Brigitte Vigolo ◽  
Alain Pénicaud ◽  
Claude Coulon ◽  
Cédric Sauder ◽  
René Pailler ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Elastic Modulus ◽  
Carbon Fibers ◽  
Sodium Dodecyl ◽  
Single Walled Carbon Nanotubes ◽  
Amphiphilic Polymers ◽  
High Quality ◽  
Simple Method ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

AbstractWe study the phase behavior of single walled carbon nanotubes in aqueous solutions of surfactant molecules or amphiphilic polymers. Homogeneous dispersions can be obtained by using sodium dodecyl sulfate (SDS) in a well-defined concentration range. In contrast, polyvinyl alcohol (PVA) is not efficient at stabilizing the tubes. Carbon nanotubes stick with each other when PVA is added to homogeneous dispersions initially stabilized by SDS. This behavior is the basis of a simple method that we developed to assemble single walled carbon nanotubes into indefinitely long ribbons and fibers. The processing consists of dispersing the nanotubes in SDS solutions, re-condensing the nanotubes in the flow of a PVA solution to form a nanotube mesh, and then collating this mesh to a nanotube fiber. Flow induced alignment may lead to a preferential orientation of the nanotubes in the mesh that has the form of a ribbon. Unlike classical carbon fibers, the nanotube fibers can be strongly bent without breaking. Their obtained elastic modulus is 10 times higher than the modulus of high-quality bucky paper.

Purity Evaluation of Single-Walled Carbon Nanotubes Using Thermogravimetric Analysis

2013 ◽  
Vol 51 (2) ◽  
pp. 137-144
Author(s):  
Naesung Lee ◽  
Jeung Choon Goak ◽  
Tae Yang Kim ◽  
Jongwan Jung ◽  
Young-Soo Seo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermogravimetric Analysis ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Purity Evaluation ◽  
Walled Carbon Nanotubes
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