Electrorheological fluid preparation method

Abstract

The present invention discloses an electrorheological fluid preparation method, which is characterized in that heavy by-products in petroleum processing are adopted as raw materials, the C / H atomic ratio in the product is controlled at 1.5-3.0 through a one-step coking method, grinding is performed, and dispersion in insulating oil is performed. According to the present invention, the petroleum heavy by-products, the heavy thick oil and the heavy oil are uses, and the pre-refining requirement on the raw materials does not exist so as to expand the raw material selection range; the one-step coking method is used to replace the multi-step process in the prior art so as to substantially simplify the preparation process and avoid the used harsh conditions for obtaining the mesophase bitumen having optical anisotropy approaching 100%; and the prepared petroleum coke particle electrorheological fluid has good mechanical response, the shear stress can achieve more than or equal to 2 Kpa under the direct current field strength of 21 V / mm, the mechanical property of the electrorheological fluid at the high temperature during the work is not significantly decreased, the current density is not significantly increased, the particles do not significantly settle after the suspension is placed for a long time, and the advantages of good stability, wear resistance and long service life are provided.

Description

technical field [0001] The invention relates to a method for preparing electrorheological fluid, in particular to a method for preparing electrorheological fluid by using heavy petroleum by-products as raw materials. Background technique [0002] So far, there have been many reports on electrorheological fluids at home and abroad, especially the preparation methods of electrorheological fluid particles. Most of them are high dielectric and semiconductor metal oxides and silicates synthesized by inorganic substances, macromolecules with polar functional groups, polymers, organic semiconductors, polyelectrolytes, etc. prepared by organic synthesis. Inorganic non-metallic materials such as composite core / shell particles are prepared by other methods. The raw material cost of these electrorheological fluid particles is relatively high, the preparation process is relatively complicated, and there are often deficiencies in service life and stability. Contents of the invention ...

AI Technical Summary

Problems solved by technology

The raw material cost of these electrorheological fluid particles is relatively high, the preparation process is relatively complicated, and there are often deficiencies in service life and stability.

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