Study of ionic solvent-free carbon nanotube nanofluids and its composites with epoxy matrix |
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| Authors: | L Lan Y P Zheng A B Zhang J X Zhang Nan Wang |
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| Institution: | (1) Department of Applied Chemistry, School of Natural and Applied Science, Northwestern Polytechnical University, Xi′an, 710072, China;(2) School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China;(3) Department of Applied Physics, School of Natural and Applied Science, Northwestern Polytechnical University, Xi′an, 710072, China; |
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| Abstract: | A facile way to synthesis ionic solvent-free multi-walled carbon nanotubes (CNTs) (MWNTs) nanofluids has been introduced.
Fourier transform infrared spectra and transmission electron microscope (TEM) were employed to study the surface structure
of MWNTs in the nanofluids. The thermal property of the nanofluids was characterized by thermogravimetric analysis and differential
scanning calorimetry. The stability of the nanofluids in the deionized water was obtained through UV–Vis absorption spectrum.
Rotary rheometer was used to test the flow feature of the nanofluids. The results of conductivity indicate that the seepage
threshold value of solvent-free nanofluids in water is about 0.408 vol.% (volume fraction). Meanwhile, it is found that the
ionic nanofluids dispersed well in epoxy matrix. The mechanical properties, such as bend modulus, strength and impact toughness
have been improved at the same time. TEM images can tell the great dispersion of solvent-free CNTs nanofluids in the epoxy
matrix. It means that this kind of nanofluids will be excellent nanofiller in the nanocomposites. |
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