Efficient functionalization of multi-walled carbon nanotubes with p -aminophenol and their application in the fabrication of poly(amide-imide)-matrix composites

2013 ◽  
Vol 63 (7) ◽  
pp. 1203-1211 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Amin Zadehnazari
Keyword(s):  
Carbon Nanotubes ◽  
Matrix Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Investigation on the Reinforcement of Multi-Walled Carbon Nanotubes on Alumina Matrix

2006 ◽  
Vol 51 ◽  
pp. 64-67
Author(s):  
Jing Sun ◽  
Lian Gao
Keyword(s):  
Carbon Nanotubes ◽  
Bending Strength ◽  
Weight Percent ◽  
Processing Route ◽  
Matrix Composites ◽  
Alumina Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Alumina Composites ◽  
Walled Carbon Nanotubes ◽  
Monolithic Alumina

In this paper, a colloidal processing route was adopted to disperse multi-walled carbon nanotubes (MWNTs) into alumina powders homogenously. Alumina matrix composites containing 0.1 to 2 weight percent of MWNTs were successfully fabricated by pressureless sintering. Also, 1wt% MWNTs-alumina composites were prepared by hot pressing for comparison. It was found that when the sample was sintered at 1450oC, the addition of 1wt% carbon nanotubes led to 10% increase in bending strength compared with monolithic alumina. The reinforcement mechanism was discussed based on the microstructure investigation. The broken nanotubes and pullout of MWNTs at interfaces are efficient in transferring the load from the alumina matrix to the nanotubes, leading to the improvement of the mechanical properties.

scholarly journals Achieving Mechanical and Conductive Anisotropy in Carbon Nanotubes/Cu Composites

2021 ◽  
Vol 2101 (1) ◽  
pp. 012056
Author(s):  
Diabo Enana Rodophe Olivier ◽  
Zhong Zheng ◽  
Fang Xing ◽  
Jiafeng Tao
Keyword(s):  
Carbon Nanotubes ◽  
Phonon Scattering ◽  
Mechanical Performance ◽  
Strengthening Mechanism ◽  
Matrix Composites ◽  
Electron Phonon Coupling ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Better Than ◽  
Orthogonal Anisotropy

Abstract Cu matrix composites reinforced by Multi-walled Carbon Nanotubes (MWCNTs) were prepared aiming to enhance the mechanical performance of Cu through MWCNTs while preserving its excellent axial conductivity. The microscopic structure, mechanical performance and electroconductivity of the composites were characterized, and the related mechanism was discussed. MWCNTs dispersed uniformly in Cu matrix and arranged in the direction of drawing. The composites showed obvious orthogonal anisotropy. The mechanical properties of the composites increased with the content of MWCNTs. The composite with 10vol.% MWCNTs has the best strength and hardness, which was better than most of data in the literature. However, the highest enhancement efficiency of 3vol.%-MWCNTs/Cu composite was the highest. The main enhancement mechanism was load transmission effects and dislocation. The electroconductivity and thermal conductivity of 5vol.%-MWCNTs/Cu composite parallel to the drawing direction reached the maximum value. The main strengthening mechanism was that Ni-Cu coating on MWCNTs leads to strong interface combination between MWCNTs and Cu, which promotes the electron-phonon coupling and reduces electron or phonon scattering at the interface.

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