DEVICE AND METHOD FOR DETERMINING THE IMMUNITY AND STRUCTURAL STABILITY OF MAGNETIC FLUIDS

摘要

FIELD: physical chemistry. ;SUBSTANCE: invention is aimed to determine the strength and structural stability of magnetic fluids. The essence of the invention lies in the fact that a container with a magnetic liquid under study with a shape identical to a gap is placed in the gap in the form of a wedge with an angle of 90-150° and is kept in it for 50-200 hours, while a criterion value ω is used to assess the colloidal stability and structural stability of the magnetic liquid, equal to the ratio of the initial magnetization of the magnetic liquid JOS to the equilibrium magnetization JHS in a magnetic field: ω= JOS / JHS. ;EFFECT: providing the possibility of determining the resilience and structural stability of magnetic fluids over time, as well as providing the possibility of determining the criterion for its evaluation. ;2 cl, 2 dwg