تأثير الموجات فوق السمعية في بعض الخصائص الريولوجية و الميكانيكية للمطاط الصناعي نوع (Buna)‎

الملخص EN

Ultrasonic absorption, velocity, viscosity, density, adiabatic compressibility, relaxation time and relaxation amplitude measurements are reported on plastic Buna polymer solutions in common solvent Heptane with deferent concentrations using pulsed ultrasonic apparatus technique operating at 26 kHz and 30 ºC, also the molecular weight ( Mv) has been measured at the same temperature .

The results show exchange interactions of polymer-polymer macromolecules and polymer-solvent molecules appeared as increment in values of velocity, density, viscosity, and absorption coefficient ,relaxation time and relaxation amplitude values with increasing polymer concentrations.

In contrast the compressibility was found decreases with increasing of concentration of this polymer.