The matrix stiffness role on tensile and thermal properties of carbon nanotubes/epoxy composites

2008 ◽  
Vol 43 (18) ◽  
pp. 6064-6069 ◽  
Author(s):  
M. R. Loos ◽  
S. H. Pezzin ◽  
S. C. Amico ◽  
C. P. Bergmann ◽  
L. A. F. Coelho
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Epoxy Composites ◽  
Matrix Stiffness ◽  
The Matrix

Properties of epoxy nanocomposites filled with carbon nanomaterials

e-Polymers ◽  
2004 ◽  
Vol 4 (1) ◽  
Author(s):  
Young Seok Song ◽  
Jae Ryoun Youn
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Carbon Nanomaterials ◽  
Rheological Behaviour ◽  
Epoxy Composites ◽  
Mechanical And Thermal Properties ◽  
Epoxy Nanocomposites ◽  
Multiwalled Carbon ◽  
Weight Content

Abstract Rheological, mechanical, electrical, and thermal properties of epoxy nanocomposites containing carbon nanomaterials (CNMs) were investigated with different loading. Two kinds of CNMs - multiwalled carbon nanotubes (MWNTs) and carbon blacks (CBs) - were selected to examine the effect of their geometrical structure on various properties. Under sonication, MWNTs and CBs (0.5, 1.0, and 1.5 wt.-%) were mixed with the epoxy resin by using a solvent. Dispersion of the CNMs in the epoxy nanocomposites was characterized by means of transmission electron microscopy and field emission scanning electron microscopy. Carbon nanotubes (CNTs)/epoxy composites show significant differences from the CBs/ epoxy composites due to their high aspect ratio. It was found that the CNTs/epoxy composites exhibit non-Newtonian rheological behaviour, while the CBs/epoxy composites with the same weight content show Newtonian behaviour. The CNTs/ epoxy composites have better mechanical and thermal properties than the CBs/ epoxy composites. In the CNTs nanocomposites, the percolation threshold of electrical conductivity is found to be less than 0.5 wt.-%, which is too low to be obtained by using other carbon materials such as carbon fibre in polymer composites. Effects of CNM content on the various properties were also examined. As loading of the CNMs increased, improved results were obtained.

The effect of adding carbon nanotubes to glass/epoxy composites in the fibre sizing and/or the matrix

2010 ◽  
Vol 41 (4) ◽  
pp. 532-538 ◽  
Author(s):  
Ashish Warrier ◽  
Ajay Godara ◽  
Olivier Rochez ◽  
Luca Mezzo ◽  
Frederic Luizi ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Composites ◽  
The Matrix

Molecular Dynamics Simulation of Double-Walled Carbon Nanotube Vibrations: Comparison With Continuum Elastic Theories

2009 ◽  
Vol 25 (4) ◽  
pp. 337-343 ◽  
Author(s):  
S. Shayan-Amin ◽  
H. Dalir ◽  
A. Farshidianfar
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Molecular Dynamics Simulation ◽  
Degrees Of Freedom ◽  
Dynamics Simulation ◽  
Matrix Stiffness ◽  
Resonant Frequencies ◽  
Radial Displacements ◽  
Surrounding Matrix ◽  
The Matrix

ABSTRACTDouble-walled carbon nanotubes (DWNTs) are expected to be useful as elements in improving conventional polymer-based fibers and films. An extensive molecular dynamics simulation and continuum analyses are carried out to estimate the influence of matrix stiffness and the intertube radial displacements on free vibration of an individual DWNT. The effects of nanotube length and chirality are also taken into account. The continuum analyses are based on both Euler-Bernoulli and Timoshenko beam theories which considers shear deformation and rotary inertia and for both concentric and non-concentric assumptions considering intertube radial displacements and the related internal degrees of freedom. New intertube resonant frequencies are calculated. Detailed results are demonstrated for the dependence of resonant frequencies on the matrix stiffness. The results indicate that internal radial displacement and surrounding matrix stiffness could substantially affect resonant frequencies especially for longer doublewalled carbon nanotubes of larger innermost radius at higher resonant frequencies, and thus the latter does not keep the otherwise concentric structure at ultrahigh frequencies.

Influence of Carbon Nanotubes on Mechanical and Thermal Properties of Glass Fiber Reinforced Vinyl Ester Resin Composites

2011 ◽  
Vol 675-677 ◽  
pp. 419-422 ◽  
Author(s):  
Hong Yan Chen ◽  
Zhen Xing Kong ◽  
Ji Hui Wang
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Glass Fiber ◽  
Vinyl Ester ◽  
Decomposition Temperature ◽  
Mechanical And Thermal Properties ◽  
Glass Fiber Reinforced ◽  
The Matrix ◽  
Higher Temperature ◽  
Interlaminar Shear

Carbon nanotubes (CNTs) were incorporated into glass fiber/ vinyl ester resins composites to improve their mechanical and thermal properties, especially the interlaminar shear and longitudinal compressive strengths which are belong to the matrix-dominanted properties and much weaker than the fiber-dominated properties. In this study, a higher temperature initiator was added to improve the polymerization degree and raise the transition temperature (Tg). Mechanical testing indicated that by adding 0.4 wt% CNTs, the nano-filled composites attributed to 21%, 16%, 10%, and 8% improvement in interlaminar shear strength, compressive strength, tensile strength and flexural strength with respect to their counterparts without CNTs, respectively. Moreover, Thermogravimetric analysis (TGA) also exhibits approximately 14°C higher decomposition temperature than those of conventional composites.

Electrical and thermal properties of epoxy composites filled with carbon nanotubes and inorganic particles

2021 ◽  
Vol 717 (1) ◽  
pp. 109-120
Author(s):  
Tatyana A. Len ◽  
Ludmila L. Vovchenko ◽  
Oleg V. Turkov ◽  
Oleg V. Lozitsky ◽  
Ludmila Y. Matzui
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Epoxy Composites ◽  
Inorganic Particles

Influence of Multi-Walled Carbon Nanotubes on the Mechanical Properties of Nanocomposites

2010 ◽  
Vol 139-141 ◽  
pp. 9-12 ◽  
Author(s):  
Shiuh Chuan Her ◽  
Shun Wen Yeh
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Matrix Stiffness ◽  
Mixture Ratio ◽  
Hardness Tests ◽  
The Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The effects of matrix stiffness and the content of multi-walled carbon nanotubes on the mechanical properties of the nanocomposites have been examined in this investigation. The matrix stiffness was controlled by changing the mixture ratio between the epoxy and hardener. Two different contents (1 wt.%. and 2 wt.%) of the multi-walled carbon nanotubes (MWCNT) were added to the epoxy matrix. Three-Point-Bending and Shore’s hardness tests were conducted to determine the Young’s modulus and hardness of the nanocomposites, respectively. Experimental results showed that the Young’s modulus of the nanocomposites was significantly increased with the increase of the addition of MWCNTs. However, the improvement of the hardness of the epoxy was insignificant with the addition of the MWCNTs. The reinforcement role of the multi-walled carbon nanotubes decreased while increasing the stiffness matrix.

scholarly journals Nanoscale thermal properties of carbon nanotubes/epoxy composites by atomistic simulations

2021 ◽  
Vol 159 ◽  
pp. 106588
Author(s):  
Shahin Mohammad Nejad ◽  
Rajat Srivastava ◽  
Francesco Maria Bellussi ◽  
Hernán Chávez Thielemann ◽  
Pietro Asinari ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Epoxy Composites ◽  
Atomistic Simulations
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