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Preparation method of flower-like micron particles

A micro-particle and flower-like technology is applied in the field of preparation of flower-like micro-particles to achieve the effect of not easy to agglomerate

Inactive Publication Date: 2017-05-10
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shear yield strength of traditional electrorheological fluids is generally less than 10kPa, which cannot meet the needs of practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The preparation method of flower-like micron particle, comprises the steps:

[0011] Add 2g of tetrabutyl titanate and 23.7g of absolute ethanol into a 250mL beaker, and stir on a magnetic stirrer for 20min to obtain a uniformly mixed solution A; meanwhile, add 10g of glycerol and 23.7g of absolute ethanol Add it into a 250mL beaker, stir on a magnetic stirrer for 20min to obtain a well-mixed solution B; then pour solution B into solution A, and stir on a magnetic stirrer for 10min. After that, pour the well-mixed solution into 80mL Put it into a high-pressure reactor and put it into a vacuum drying oven, keep it warm at 180°C for 24 hours, then take out the reactor and cool it in the air; wash the obtained white precipitate with alcohol and carry out suction filtration, and then Put it into a vacuum drying oven at 80°C for drying; finally, after grinding with a mortar, the flower-like micron particles can be obtained.

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Abstract

The invention relates to a preparation method of flower-like micron particles. The preparation method of the flower-like micron particles comprises the following steps: adding 2g of tetrabutyl titanate and 23.7g of absolute ethyl alcohol into a beaker with the volume of 250mL, and stirring for 20 minutes to obtain a solution A; meanwhile, adding 10g of glycerol and 23.7g of absolute ethyl alcohol into the beaker with the volume of 250mL, and stirring for 20 minutes to obtain a solution B; then pouring the solution B into the solution A, stirring for 10 minutes, then pouring a uniformly-mixed solution into a polytetrafluoroethylene tank with the volume of 80mL, filling into a high-pressure reaction still and then putting into a vacuum drying oven; insulating at the temperature of 180DEG C for 24 hours, and then taking out the reaction still and cooling in air; carrying out alcohol washing and suction filtration on obtained white precipitation, and subsequently putting into the vacuum drying oven at the temperature of 80DEG C for drying; finally, grinding by using mortar to obtain the flower-like micron particles. The flower-like micron particles prepared by the preparation method disclosed by the invention have rough surface structures, and a relative friction force among the particles is greater, so that the shear yield strength of the flower-like micron particles is higher than that of electrorheological fluid using smooth spherical particles as a dispersion phase.

Description

technical field [0001] The invention relates to a preparation method of flower-shaped micron particles. Background technique [0002] Electrorheological fluids are smart soft materials regulated by electric fields. It is a suspension system formed by dispersing solid particles into insulating oil. Under the action of an electric field, it exhibits the rheological characteristics of Bingham fluid, and the shear yield strength can be controlled reversibly in real time by the electric field, and the macroscopic performance is a transition between a liquid-like state and a solid-like state. The shear yield strength of traditional electrorheological fluids is generally less than 10kPa, which cannot meet the needs of practical applications. In 2003, Wen Weijia et al. used urea-coated barium-titanium oxide particles as the functional phase to prepare a giant electrorheological fluid with a shear yield strength exceeding 130kPa. Subsequently, a series of new electrorheological fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/10C01G23/053C10N30/04
CPCC01G23/053C10M125/10C10N2030/04C10N2030/60
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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