BSU bulletin. Chemistry. Physics
Bibliographic description:
, STUDY OF LOW-FREQUENCY SHEAR ELASTICITY OF POLYMETHYLSILOXANE LIQUID // BSU bulletin. Chemistry. Physics. - 2022. №2-3. . - С. 37-43.
Title:
STUDY OF LOW-FREQUENCY SHEAR ELASTICITY OF POLYMETHYLSILOXANE LIQUID
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Annotation:
Annotation. According to the existing theories of liquids, shear elasticity should manifest itself at high megahertz frequencies. Low-frequency elasticity was detected in the laboratory. The study of the low-frequency shear elasticity of a polymethylsiloxane liquid by an acoustic resonance method using a piezoquartz resonator is carried out. The modulus of shear elasticity, effective viscosity and the tangent of the angle of mechanical losses at a frequency of shear vibrations of 73 kHz are determined.
Keywords:
resonant method, liquid, viscoelastic properties, shear elasticity, relaxation, resonant frequency, attenuation
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