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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.

Inactive Publication Date: 2006-05-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the dispersed phase particles of these existing electrorheological materials are mostly in the micron scale range, their mechanical value under electric field excitation is not high, their precipitation resistance is poor, and their temperature effect is too poor, resulting in a narrow working temperature range. These have hindered the wide application of electrorheological fluids, so developing new methods to find high-performance electrorheological fluid materials has become the focus of this field

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: (Titanium Oxide / Acrylamide Nano Electrorheological Fluid)

[0015] First, add 15ml of tetrabutyl titanate and 2ml of glacial acetic acid into 250ml of absolute ethanol, stir for 3 hours, and make solution A; meanwhile, add 6g (1.5% by weight) of sodium lauryl sulfate, 5g Add acrylamide to 400ml of deionized water, stir for 3 hours to make solution B; then slowly drop solution A into solution B under strong stirring, and then add 0.5ml glacial acetic acid dropwise to adjust The pH value of the solution is 3.5, continue to stir for two days, let the particles settle, and then use a vacuum filter to dry them; then vacuum-dry the filter cake at 70°C for 4 hours, take it out and grind it into a powder, and then put it in a drying oven Let dry for 3 hours. Then carefully grind for 5 hours until it is relatively smooth to get the sample powder. Add the sample powder into 1ml of methyl silicone oil in batches, and after each powder addition, it must be fully ground...

Embodiment 2

[0016] Example 2: (Titanium Oxide / Acetamide Nano Electrorheological Fluid)

[0017] First, add 15ml of tetrabutyl titanate and 2ml of glacial acetic acid into 250ml of absolute ethanol, stir for 3 hours, and make solution A; meanwhile, add 6g (1.5% by weight) of sodium lauryl sulfate, 5g Add acetamide to 400ml of deionized water, stir for 3 hours to make solution B; then slowly drop solution A into solution B under strong stirring, and then add 0.5ml glacial acetic acid to adjust the solution The pH value is 3.5, continue to stir for two days, let the particles settle, and then dry them with a vacuum filter; then vacuum-dry the filter cake at 70°C for 4 hours, take it out and grind it into powder, and then dry it in a drying oven 3 hours. Then carefully grind for 5 hours until it is relatively smooth to get the sample powder. Add the sample powder into 1ml of methyl silicone oil in batches, grind it thoroughly after each powder addition to fully infiltrate the powder and oil...

Embodiment 3

[0018] Embodiment three: (pure titanium oxide electrorheological fluid)

[0019] First, 15ml of tetrabutyl titanate and 2ml of glacial acetic acid were added to 250ml of absolute ethanol, and stirred for 3 hours to form a solution A; at the same time, 6g (1.5% by weight) of sodium lauryl sulfate was added to the 400ml of deionized water, stirred for 3 hours to make solution B; then slowly drop solution A into solution B under strong stirring, and then add 0.5ml glacial acetic acid dropwise to adjust the pH value of the solution to 3.5 , continue to stir for two days, let the particles settle, and then dry them with a vacuum filter; then vacuum-dry the filter cake at 70°C for 4 hours, take it out and grind it into powder, then dry it in a drying oven for 3 hours, and then carefully Grind for 5 hours until it is relatively smooth to get the sample powder. Add the sample powder into 1ml of methyl silicone oil in batches, grind it thoroughly after each powder addition to fully in...

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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.

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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Application Information

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IPC IPC(8): B01F3/12C10M107/50H01B3/46
Inventor 赵晓鹏王宝祥赵艳尹剑波乔荫颇
Owner NORTHWESTERN POLYTECHNICAL UNIV
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