[en] The study of the physical-mechanical properties of suspensions of silica dioxide nanoparticles and fullerenes in polyethylsiloxane liquid was carried out. The shear modulus and effective viscosity of nanosuspensions were determined by the acoustical resonance method, the coefficient of friction with the base polyethylsiloxane lubricant and modified lubricants was determined, and an improvement of the tribological properties of the synthesized suspensions was shown due to increasing the strength of the lubricating film. (paper)

[en] This paper studies the dependence of the shear elasticity modulus and the coefficient of dynamic viscosity of the suspensions on the magnitude of the shear strain of nanoparticle suspensions in a polymer liquid. As the dispersion medium, polyethylsiloxane liquid PES-2 was used, the solid dispersed phase - silica nanoparticles and fullerenes. We used the acoustic resonance method for determining the complex shear modulus of liquids using a piezoquartz resonator. Studies have shown nonlinear behavior of viscoelastic parameters of suspension samples depending on shear stress. (paper)

[en] Suspensions of nanoparticles of silicon dioxide in polyethylsiloxane liquid used in engineering as greases and instrument oils have been synthesized. The effective viscosity of nanosuspensions depending on the shear stress was determined by the acoustic resonance method using a piezoelectric quartz resonator. An increase in the strength of the structure of nanosuspensions due to the formation of a supramolecular structure has been shown. (paper)