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Nano titanium dioxide electrorheological liquid

A nano-titanium dioxide, electrorheological fluid technology, applied in the direction of lubricating composition and the like, achieves the effects of simple preparation method, good chemical stability and low current density

Inactive Publication Date: 2012-01-04
SHANGHAI XIYUAN ENERGY SAVING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the unmodified or doped titanium dioxide electrorheological fluid with high electrorheological properties.

Method used

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  • Nano titanium dioxide electrorheological liquid
  • Nano titanium dioxide electrorheological liquid
  • Nano titanium dioxide electrorheological liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Mix 34ml of tetrabutyl titanate and anhydrous isopropanol at a volume ratio of 1:4, add 0.1mL of glacial acetic acid, and stir well to obtain a stable solution T; mix 1ml of isooctane with 30ml of water to obtain a solution O: Under the condition of stirring, at room temperature, the solution O was added dropwise to the solution T at a volume ratio of T:O=5:1, and a precipitate gradually formed. When the reaction is complete, age the precipitate at room temperature for 10 hours, then wash the precipitate 4 times with deionized water and absolute ethanol, filter, dry in vacuum at 60°C for 20 hours, and dry at 120°C for 4 hours , that is to obtain the desired nanometer size distribution of titanium dioxide particles.

[0018] The titanium dioxide particles with a viscosity of 50mm 2 / s of simethicone oil was evenly mixed to prepare the titanium dioxide electrorheological fluid of the present invention with a volume fraction of 10%. When the applied electric field V=3kV / ...

Embodiment 2

[0020] Mix 34ml of tetrabutyl titanate and anhydrous isopropanol at a volume ratio of 1:7, add 0.1mL of glacial acetic acid, and stir well to obtain a stable solution T; mix 1ml of isooctane with 12.6ml of water to obtain Solution O: Add solution O dropwise to solution T at a volume ratio of T:O=20:1 at room temperature under stirring, and a precipitate gradually forms. After the reaction is complete, age the precipitate at room temperature for 10 hours, then wash the precipitate 4 times with deionized water and absolute ethanol, filter, dry in vacuum at 60°C for 25 hours, and dry at 120°C for 4 hours. That is, titanium dioxide particles with the desired nanometer size distribution are obtained.

[0021] The titanium dioxide particles with a viscosity of 100mm 2 / s simethicone oil is evenly mixed to prepare the titanium dioxide electrorheological fluid of the present invention with a volume fraction of 30%. When the applied electric field V=3kV / mm, the shear strength of 30% ...

Embodiment 3

[0023] Mix 34ml of tetrabutyl titanate and anhydrous isopropanol at a volume ratio of 1:9, add 0.1mL of glacial acetic acid, and stir well to obtain a stable solution T; mix 1ml of isooctane with 19ml of water to obtain a solution O: Under the condition of stirring, at room temperature, the solution O was added dropwise to the solution T at a volume ratio of T:O=17:1, and a precipitate gradually formed. After the reaction is complete, age the precipitate at room temperature for 10 hours, then wash the precipitate 4 times with deionized water and absolute ethanol, filter, dry in vacuum at 60°C for 30 hours, and dry at 120°C for 4 hours. That is, titanium dioxide particles with the desired nanometer size distribution are obtained.

[0024] The titanium dioxide particles with a viscosity of 200mm 2 / s simethicone oil is uniformly mixed to prepare the titanium dioxide electrorheological fluid of the present invention with a volume fraction of 50%. When the applied electric field...

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Abstract

The invention relates to nano-titanium dioxide electrorheological fluid; the titanium dioxide electrorheological fluid takes the titanium dioxide particles with nanometer size as dispersed phase and silicon oil as continuous phase; the volume concentration of the titanium dioxide in the titanium dioxide electrorheological fluid is 5 to 50 percent; a preparation method thereof is to firstly select the titanium salt as a hydrolysis precursor, control the reaction condition, prepare the titanium dioxide with nanometer size, and mix with silicon oil evenly to obtain the product; and the prepared titanium dioxide electroheological fluid is characterized by extremely strong electroheological effect, good antipreciptin stability, low current density, good chemical stability, no pollution, and no corrosiveness, and also has the advantages of low cost, short cycle and simple preparation technology.

Description

technical field [0001] The invention relates to a titanium dioxide electrorheological fluid, in particular to a nanometer titanium dioxide electrorheological fluid with relatively high yield stress. Background technique [0002] Electrorheological fluid is a complex fluid mixed with dielectric particles and insulating liquid. It will undergo a structural transformation similar to liquid-solid phase transition under an electric field. It is a new field of material and colloid science research. The unique properties of electrorheological fluid, such as continuous adjustable shear strength, fast response and reversible transformation, can be used to realize the intelligent control of mechantronics. It is a unique smart material with adjustable softness and hardness. It is considered to be Materials with the potential to revolutionize many sectors such as vehicles, hydraulics, machine building, sensor technology, and many others. At present, it has been found that a variety of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M171/00
Inventor 刘雪辉郭建军许高杰李勇崔平
Owner SHANGHAI XIYUAN ENERGY SAVING MATERIAL CO LTD
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