METHOD OF ULTRASONIC POLYMERS MOONEY VISCOSITY CONTROL Russian patent published in 2020 - IPC G01N29/00 

FIELD: measurement technology.

SUBSTANCE: use: to determine polymers Mooney viscosity. Summary of invention consists in the fact that pulses of ultrasonic oscillations are transmitted through the analyzed sample, ultrasonic oscillations passed through the sample are received, propagation speed and attenuation coefficient of ultrasonic oscillations are measured, values of coefficients Z₁ and Z₂ and Mooney polymer viscosity is evaluated based on measured parameters of ultrasonic oscillations and coefficients Z₁ and Z₂, wherein the estimate is carried out at different frequencies and temperatures, additionally determining the signal/noise ratio of the Mooney viscosity change to the frequency and temperature change , updating values of coefficients Z₁ and Z₂ for each pair of frequencies and pair T, ω is selected, where T is temperature, at which ratio has maximum value.

EFFECT: high sensitivity of the method and low measurement error.

1 cl, 2 dwg, 2 tbl