Method for determining resin viscosity with ultrasonic waves

Details Method for determining resin viscosity with ultrasonic waves Method for determining resin viscosity with ultrasonic waves

1984-06-15

1985-12-24

Levy, Stewart J.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

G01N 1100, G01N 2902

Patent

active

045598100

ABSTRACT:
A method for determining the dynamic viscosity of a specimen of a polymeric resin which is subjected to a time-varying temperature includes the steps of passing an ultrasonic sensing wave of known amplitude through the specimen, sensing the amplitude of the wave after it has travelled through the specimen, and from the degree of amplitude attenuation, obtaining a value which has a linear relationship to the logarithm of the instantaneous dynamic viscosity of the resin.

REFERENCES:
patent: 2755662 (1956-07-01), Swengel
patent: 2966058 (1960-12-01), McSkimin
patent: 3553636 (1971-01-01), Baird
patent: 3659974 (1972-05-01), Neugroschl
patent: 3696661 (1972-10-01), Garabrant et al.
patent: 4044600 (1977-08-01), Claxton et al.
patent: 4312228 (1982-01-01), Wohltjen
patent: 4327587 (1982-05-01), Docekal et al.
patent: 4346599 (1982-08-01), McLaughlin et al.

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