Relaxation of the volume and shear viscosities in diethyl siloxane and ethyloctyl siloxane |
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| Authors: | V V Surnychev V I Kovalenko A S Lagunov V V Belyaev |
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| Institution: | (1) Moscow State Regional University, ul. Radio 10a, Moscow, 107005, Russia |
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| Abstract: | The variable distance pulsed phase-locked method is applied to study the temperature and frequency dependences of the rate
and coefficient of ultrasound absorption in diethyl siloxane and ethyloctyl siloxane in the frequency range 4–63 MHz at temperatures
from 293 to 348 K. Based on experimental data, the frequency dependence of the volume and shear viscosities is derived. The
values of the shear and volume viscosity coefficients, as well as the relaxation times of processes discovered, are found. |
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