ON ACOUSTIC RELAXATION MECHANISMS IN THE DISPERSE SYSTEM AEROSIL - POLYPROPYLENE GLYCOL

Authors
SPERKACH VS STRIBULEVICH AL RUDENKO AP TANTSYURA TP
Citation
Vs. Sperkach et al., ON ACOUSTIC RELAXATION MECHANISMS IN THE DISPERSE SYSTEM AEROSIL - POLYPROPYLENE GLYCOL, UKRAINSKII FIZICHESKII ZHURNAL, 38(12), 1993, pp. 1793-1796
Citations number
9
Categorie Soggetti
Physics
Journal title
UKRAINSKII FIZICHESKII ZHURNAL → ACNP
ISSN journal
02023628
Volume
38
Issue
12
Year of publication
1993
Pages
1793 - 1796
Database
ISI
SICI code
0202-3628(1993)38:12<1793:OARMIT>2.0.ZU;2-J
Abstract
Results of analysis of superfluous sound absorption in the disperse sy stem on the basis of polypropylene glycol with aerosil are presented. The sound absorption was measured in the frequency range of 3 - 1200 M Hz by the impulse method. The presence of aggregates is shown, their s izes are calculated for different aerosil concentrations in the region of temperature 283 - 343 K. The sound absorption in the frequency ran ge of 3 - 110 MHz is due to a friction of aggregates with a liquid but in the higher frequency range it is due to reorganization structure p rocesses in polypropylene glycol.