Effect of Aspect Ratio of MWNTs on the Nano-Mechanical Properties of Epoxy Composites Prepared by Electron Beam Irradiation

2012 ◽  
Vol 486 ◽  
pp. 51-54
Author(s):  
Yan Yan Lu ◽  
Hua Li ◽  
He Zhou Liu
Keyword(s):  
Electron Beam ◽  
Aspect Ratio ◽  
Electron Beam Irradiation ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Curing Process ◽  
Beam Irradiation ◽  
Nanomechanical Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this article, multi-walled carbon nanotubes (MWNTs) of different aspect ratio were used to reinforce epoxy composite. The MWNTs/epoxy composites were prepared by electron beam (EB) curing process. The effect of aspect ratio on the nanomechanical properties MWNTs/epoxy nanocomposites was studied. The results showed that epoxy composites added with 0.25 wt% short MWNTs showed higher nanohardness than pure epoxy and the composite incorporation with the same amount of long MWNTs, within the indentation depth between 1500 and 2000 nm.

Effect of electron beam irradiation on multi-walled carbon nanotubes

2014 ◽  
Vol 24 (3) ◽  
pp. 764-769 ◽  
Author(s):  
Bin LI ◽  
Yi FENG ◽  
Ke-wang DING ◽  
Gang QIAN ◽  
Xue-bin ZHANG ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Thermoelectric Performance of Polypropylene/Carbon Nanotube/Ionic Liquid Composites and Its Dependence on Electron Beam Irradiation

2022 ◽  
Vol 6 (1) ◽  
pp. 25
Author(s):  
Oliver Voigt ◽  
Beate Krause ◽  
Petra Pötschke ◽  
Michael T. Müller ◽  
Sven Wießner
Keyword(s):  
Electron Beam ◽  
Seebeck Coefficient ◽  
Electron Beam Irradiation ◽  
Single Walled Carbon Nanotubes ◽  
Electron Beam Treatment ◽  
Beam Irradiation ◽  
Seebeck Coefficients ◽  
Treated Sample ◽  
P Type ◽  
Walled Carbon Nanotubes

The thermoelectric behavior of polypropylene (PP) based nanocomposites containing single walled carbon nanotubes (SWCNTs) and five kinds of ionic liquids (Ils) dependent on composite composition and electron beam irradiation (EB) was studied. Therefore, several samples were melt-mixed in a micro compounder, while five Ils with sufficiently different anions and/or cations were incorporated into the PP/SWCNT composites followed by an EB treatment for selected composites. Extensive investigations were carried out considering the electrical, thermal, mechanical, rheological, morphological and, most significantly, thermoelectric properties. It was found that it is possible to prepare n-type melt-mixed polymer composites from p-type commercial SWCNTs with relatively high Seebeck coefficients when adding four of the selected Ils. The highest Seebeck coefficients achieved in this study were +49.3 µV/K (PP/2 wt.% SWCNT) for p-type composites and −27.6 µV/K (PP/2 wt.% SWCNT/4 wt.% IL type AMIM Cl) for n-type composites. Generally, the type of IL is decisive whether p- or n-type thermoelectric behavior is achieved. After IL addition higher volume conductivity could be reached. Electron beam treatment of PP/SWCNT leads to increased values of the Seebeck coefficient, whereas the EB treated sample with IL (AMIM Cl) shows a less negative Seebeck coefficient value.

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