Method for preparing nano-titanium oxide/amide derivative electrorheological fluid

A technology of amide derivatives and electrorheological fluids, applied in chemical instruments and methods, mixing methods, lubricating compositions, etc., can solve problems that hinder the wide application of electrorheological fluids, poor anti-sedimentation, narrow working temperature range, etc.
CN1768913AInactive Publication Date: 2006-05-10NORTHWESTERN POLYTECHNICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWESTERN POLYTECHNICAL UNIV
Publication Date
2006-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing current liquid-change material, especially relating to a titanium oxide / acidamide derivative nanometer current liquid-change material. Compared with former relative method, the inventive current liquid-change material uses glacial acetic acid to restrain the hydrolyzation of butyl titanate, and prevents the reunite of nanometer particles via adjusting the pH value of solution and adding surface activator, The invention has easy operation and lower cost, which the prepared diffused phased material is core-shell nanometer particles that the nanometer titanium oxide particles is basic core, and the acidamide derivative with high dielectric constant is the coating layer. Said structure can improve the dielectric property and conducting property of material to make the current liquid-change have some excellent properties: strong current change effect, better anti-deposition stability, lower electricity density, and better chemical stability. The figure displays the relationship between diffused phased particle current liquid-change shear stress with different coating structures and the electric field intensity.
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Description

technical field

[0001] The invention relates to a preparation method of electrorheological fluid material, in particular to a preparation method of titanium oxide / amide derivative nano electrorheological fluid. Background technique

[0002] Electrorheological fluid is a kind of intelligent soft matter, which is usually a suspension system formed by dispersing solid particles with high dielectric constant and low conductivity in insulating oil with low dielectric constant. Because electrorheological fluid has some excellent properties, it has potential application value in shock absorbers, clutches, dampers, drives, stepless speed regulation and other devices. According to whether the electrorheological fluid relies on water as an activator, the electrorheological fluid can be divided into aqueous electrorheological fluid materials and anhydrous electrorheological fluid materials. Early research work mainly focused on aqueous electrorheological fluids, such as starch, gelati...

Claims

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