Experimental apparatus for researching microstructure and magnetic field relation of magnetic fluid

Abstract

The invention provides an experimental apparatus for researching microstructure and magnetic field relation of magnetic fluid. The experimental apparatus consists of a video optical microscope 1, a double-loop liquid-cooling constant-temperature even magnetic field generating device 2, a bottom light source bracket 3, a computer 4, a programmable power supply 5, a light source 6, a water cooling liquid circulating radiating device 7, a transformer oil circulating radiating device 8 and a gauss meter 9, wherein the double-loop liquid-cooling constant-temperature even magnetic field generating device can provide large magnetic field stably for a long time without affecting ambient environment thereof; the observation is realized by moving the video optical microscope 1 right above the bottom light source bracket 3 and then adjust the focal length; the magnetic field parallel to or vertical to a magnetic fluid sample can be generated by simultaneously using the bottom light source bracket 3 and the double-loop liquid-cooling constant-temperature even magnetic field generating device 2, so as to research the microstructure of the magnetic fluid in multiple magnetic field directions.

Description

technical field [0001] The invention is an experimental device for studying the relationship between the microscopic structure of magnetic fluid and a magnetic field, and belongs to the research field of microscopic structure of magnetic fluid. Background technique [0002] Magnetic fluid is a new type of functional material. The research began in the 1960s. The relatively mature applications involved include vacuum sealing, lubrication, flotation, grinding (polishing), dampers, etc., and go deep into electronics, Energy, aerospace, national defense, metallurgical machinery, chemical environmental protection, instrumentation, medical and health and other fields. The fluid is a stable colloidal solution formed by mixing magnetic particles (about 10nm) with surfactants and uniformly dispersing in the base liquid. The magnetic particles are , etc. Surfactants include oleic acid, succinic acid, fluether acid, etc., and base fluids include water, kerosene, toluene, etc. Fer...

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Problems solved by technology

[0008] The purpose of the present invention is to solve some problems existing in the existing experimental devices for studying the relationship between the microstructure of the magnetic fluid and the magnetic field. In the case of relatively low cost, an experimental method for studying the relationship between the microstructure of the magnetic fluid and the magnetic field is proposed. The device can dynamically observe the change of the microstructure of the magnetic fluid under the action of the magnetic field and the change of the optical characteristics caused by it, and can provide two kinds of magnetic fields perpendicular to and parallel to the observation sample, and can provide a larger magnetic field for a long time. Without affecting the stability of the surrounding environment, to ensure a relatively constant temperature in the sample observation space

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