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Electrorheological fluid of titanyl-zinc oxalate and fabrication method thereof

A technology of titanyl oxalate and titanyl oxalate is applied in the petroleum industry, base materials, lubricating compositions and other directions, can solve the problems of low yield stress of electrorheological fluid, complicated preparation process, etc., and achieves low cost, simple preparation process, The effect of good application prospects

Active Publication Date: 2013-06-12
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electrorheological fluids have not been widely used in industry at present, mainly due to the low yield stress of electrorheological fluids and the complicated preparation process.

Method used

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  • Electrorheological fluid of titanyl-zinc oxalate and fabrication method thereof
  • Electrorheological fluid of titanyl-zinc oxalate and fabrication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix 0.05mol tetrabutyl titanate and absolute ethanol in a molar ratio of 1:30, stir well to obtain a stable solution A; dissolve 0.05mol zinc nitrate in absolute ethanol to prepare a 0.2mol / l zinc nitrate solution B; Dissolve 0.1mol oxalic acid in deionized water to prepare 1mol / l oxalic acid solution C; put solution A on a mixer and stir in a water bath at 40°C; add solution B to solution A; stir evenly , to get a uniform solution AB; then drop solution C into solution AB to gradually form a precipitate; after the reaction is complete, filter the formed precipitate and dry it to obtain the required zinc titanyl oxalate particles with a size distribution of nanometer to micrometer ;

[0029] The zinc titanyl oxalate particles were evenly mixed with simethicone to prepare zinc titanyl oxalate electrorheological fluids with a volume concentration of 10%, 20% and 30%, respectively. The relationship between the yield stress and the electric field strength is measured as ...

Embodiment 2

[0031] Mix 0.05 mol of titanium tetrachloride and anhydrous isopropanol in a molar ratio of 1:40, and stir evenly to obtain a stable solution A; dissolve 0.05 mol of zinc chloride in anhydrous isopropanol to prepare 0.2 mol / l zinc chloride solution B; dissolve 0.1mol oxalic acid in deionized water to prepare 1mol / l oxalic acid solution C; put solution A on a mixer and stir it, and place it in a water bath at 50°C; add solution B to the solution In A; Stir evenly to obtain a uniformly mixed solution AB; then drop solution C into solution AB to gradually form a precipitate; after the reaction is complete, filter the formed precipitate and dry it to obtain the required nanometer to micrometer size distribution. Zinc titanyl oxalate particles;

[0032] The zinc titanyl oxalate particles are uniformly mixed with methyl silicone oil to prepare zinc titanyl oxalate electrorheological fluids with volume concentrations of 15%, 20% and 30% respectively. When the applied electric field ...

Embodiment 3

[0034] Mix 0.05 mol tetrabutyl titanate and anhydrous isopropanol in a molar ratio of 1:30, stir well to obtain a stable solution A; dissolve 0.05 mol zinc acetate in anhydrous isopropanol to prepare 0.2 mol / l zinc acetate solution B; dissolve 0.1mol oxalic acid in deionized water to prepare 1mol / l oxalic acid solution C; put solution A on a mixer and stir it, and place it in a water bath at 40°C; add solution B to solution A medium; stir evenly to obtain a uniformly mixed solution AB; then drop solution C into solution AB to gradually form a precipitate; after the reaction is complete, filter the formed precipitate and dry it to obtain the required oxalic acid with a size distribution of nanometer to micrometer Titanium zinc particles;

[0035] The zinc titanyl oxalate particles are uniformly mixed with simethicone to prepare zinc titanyl oxalate electrorheological fluids of the present invention with a volume concentration of 10%, 20% and 30%. When the applied electric fiel...

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Abstract

The invention relates to a electrorheological fluid of titanyl-zinc oxalate and fabrication method thereof. The electrorheological fluid of titanyl-zinc oxalate comprises titanyl-zinc oxalate granules as dispersed phases at nanometer or micrometer level. The titanyl-zinc oxalate granules are evenly dispersed into the silicon oil to form suspending liquid with volume concentration of 5 to 40 percent. The fabrication method comprises the following steps: mixing the titanium salt with the zinc salt respectively with the anhydrous organic alcohol solution with a certain proportion to get solutionA and B. mix solution A and solution B to get solution AB, dissolving oxalic acid of 2 times mol amount of the titanium salt in the deionized water to get solution C and adding solution C into the solution AB to gradually get the precipitate. Filtrating and washing and drying the precipitate to obtain the titanyl-zinc oxalate granules distributed at nanometer or micrometer level. Then the electrorheological fluid can be made by mixing the granules with the silicon oil evenly. The electrorheological fluid of titanyl-zinc oxalate of the invention has strong electrorheological effect and a high yielding strength in static state, low current density, stable structure. The fluid of the invention is non-toxic, non-pollutant and cheap in cost. The fabrication technology is easy to operate and short in cycle.

Description

technical field [0001] The invention relates to an electrorheological fluid and a preparation method thereof, in particular to an electrorheological fluid and a preparation method thereof. Background technique [0002] Electrorheological fluid is called a smart material, which has the quality of controlled change, and its yield stress and elastic modulus can be changed by changing the external conditions. It is usually composed of solid particles with high dielectric constant uniformly dispersed in insulating oil with low dielectric constant. Under normal conditions, it is a suspension, which can undergo liquid-solid transformation under the action of an electric field. When the applied electric field strength is much lower than a certain critical value, the electrorheological fluid is liquid; when the electric field strength is much higher than this critical value, it becomes solid. Near the critical value of the electric field strength, the viscosity of the electrorheolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M105/22
Inventor 刘丰华许高杰吴敬华程昱川郭建军崔平
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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