Rheological characteristics of different carbon nanoparticles in cholesteric mesogen dispersions as lubricant coolant additives
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The effect of two types of carbon nanoparticles, i.e., shungite carbon (SC) and multiwalled carbon nanotubes (MWCNTs), on the mesomorphic and rheological properties of cholesteric mesogen in the concentration range of 0.005–0.04 wt % has been reported. The main physical parameters for tribological applications, such as phase transition temperature, viscosity, elastic modulus G', loss modulus G'', and complex viscosity η*, have been studied. The preference of using SC as a lubricating coolant additive component has been shown in the comparison with MWCNTs.
Keywordscholesteric mesogens carbon nanotubes shungite carbon viscosity viscoelasticity
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- 2.Berezina, E.V., Proizvodnye ftalotsianina kak prisadki k smazochnym kompozitsiyam. (Ftalocyanine Derivatives as Additives to Lubricating Compositions) Ivanovo: Ivan. Gos. Univ., 2007.Google Scholar
- 5.Ermakov, S.F., Rodnenkov, V.G., Beloenko, E.D., and Kupchinov, B.I., Zhidkie kristally v tekhnike i meditsine (Liquid Crystals in Techniques and Medicine), Minsk: Asar; Moscow: Chero, 2002.Google Scholar
- 6.Usol’tseva, N.V., Yakemseva (Smirnova), M.V., and Smirnova, A. I., Nanostructured mezogen systems and compositions with carbon particles on their basis, Nanotekhnika, 2014, no. 1, pp. 61–66.Google Scholar
- 10.Ryu, S.H., Shin, T.J., Gong, T., Shen, Y., Korblova, E., Shao, R., Walba, D.M., Clark, N.A., and Yoon, D.K., Cybotactic behavior in the de Vries smectic A liquidcrystal structure formed by a silicon-containing molecule, Phys. Rev. E: Statist., Non-Lin., Soft Matter Phys., 2014, vol. 89, p. 032502.CrossRefADSGoogle Scholar
- 11.Schramm, G., A Practical Approach to Rheology and Rheometry, Karksruhe, Germany: Thermo Fisher Sci., 2004, 2nd ed.Google Scholar