Current change effect generation device and applicable and prescribed current change liquid

Abstract

The invention discloses an electric current variable effect generating device and electric current variable liquid applied and prepared by the electric current variable effect generating device, wherein, an anode and a cathode of a DC or AC high voltage power supply are connected with two conducting metal plates respectively; the electric current variable liquid and two electrodes are separated by insulating materials or the electric current variable liquid and one of the two electrodes are separated by the insulating materials, and disperse particles of the electric current variable liquid are polarized under the action of the high voltage electric field, which makes the viscosity of the electric current variable liquid rapidly increase, thereby the electric current variable liquid is quickly converted from the liquid state into the solid-like state, and generates the electric current variable effect; the generating device can be applied to polishing devices, shock absorbers and parallel disk type clutches; the generating device has the advantages of avoiding the electric leakage phenomenon existing in the prior electric current variable effect generating device and ensuring the stability of the electric current variable effect; moreover, compositions of the electric current variable liquid are greatly expanded, thereby materials which can not be used to make the electric current variable liquid originally can be used to make the electric current variable liquid; the breakdown strength of the electric current variable liquid is improved, thereby the invention can work under a higher voltage.

Description

technical field [0001] The patent of the present invention relates to an electrorheological effect generating device and its application, and the patent of the present invention also relates to the prepared electrorheological fluid. Background technique [0002] Electrorheological fluid (ER) is a suspension of solid microparticles with high dielectric constant in insulating base oil. Its rheological properties can be changed by an external electric field, showing the electrorheological effect. Under the action of an external electric field, its viscosity increases rapidly so that it loses its fluidity, and can change from a liquid state to a quasi-solid state with shear resistance properties. After the external electric field is removed, it can return to its original liquid state in an instant. The conversion process between the "solid" and "liquid" phases is reversible, and the general conversion time is on the order of milliseconds. As a new type of intelligent material, ...

AI Technical Summary

Problems solved by technology

In this device, the base fluid of the electrorheological fluid must have good electrical insulation properties and breakdown strength, otherwise there will be leakage current problems, or even electrical breakdown, resulting in the unsustainable electrorheological effect; the dispersed particles of the electrorheological fluid It must also be a material with a high dielectric constant that is easily polarized, and the electrical conductivity must be appropriate, otherwise the electrical conductivity will increase the current value passing through the electrorheological fluid, causing the electrorheological fluid to fail due to overheating due to excessive temperature rise; in addition, With this electrorheological effect generation method, the electrorheological effect cannot be kept stable for a long time, because the electrorheological fluid may lose the electrorheological effect due to a slight leakage current problem after a long time of operation

This greatly limits the composition and application range of electrorheological fluids, and also limits the effective use of electrorheological effects.

Images