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Kaolin/TiO2 nanotube composite particle electrorheological fluid materials

A nanocomposite material and nanotube composite technology, which is applied in lubricating compositions, petroleum industry, additives, etc., can solve the problems of easy settling, narrow working temperature range and low mechanical value.

Inactive Publication Date: 2007-08-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its mechanical value is still low, only a few hundred Pa, the working temperature range is narrow, and it is easy to settle

Method used

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  • Kaolin/TiO2 nanotube composite particle electrorheological fluid materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: firstly add 6g of kaolin to 60ml of absolute ethanol, fully stir at room temperature for 3 hours, at the same time mix 14ml of butyl titanate with 14ml of absolute ethanol, and drop it under the condition of stirring into the ethanol suspension of kaolin, and further fully stirred for 5 hours. At this time, the Ti / soil ratio was 0.329; finally, a certain amount of absolute ethanol containing a small amount of secondary deionized water was added dropwise, and the stirring was continued for 6 hours, and then the system After standing overnight, an opaque gel can be obtained; the gel is then dried at 80°C for 4 hours and at 90°C for 2 hours. After grinding, kaolin / titanium oxide-coated composite particles can be obtained, and then calcined at 200°C for 1 hour, 400°C for 1 hour, and 550°C for 2 hours to obtain kaolin / TiO 2 nanocomposite particles. Then add 400ml 10M NaOH solution to the Teflon bottle, after heating to 120°C, slowly add the aforementioned kaolin / ...

Embodiment 2

[0011] Example 2: first add 6g of kaolin to 60ml of absolute ethanol, fully stir at room temperature for 3 hours, at the same time mix 12ml of butyl titanate with 12ml of absolute ethanol, and drop it into the into the ethanol suspension of kaolin, further fully stirred for 5 hours, and at this time the Ti / soil ratio was 0.282; finally a certain amount of absolute ethanol containing a small amount of secondary deionized water was added dropwise, continued to stir for 6 hours, and then the system was statically After leaving overnight, an opaque gel can be obtained; the gel is then dried at 80°C for 4 hours and at 90°C for 2 hours. After grinding, kaolin / titanium oxide-coated composite particles can be obtained, and then calcined at 200°C for 1 hour, 400°C for 1 hour, and 550°C for 2 hours to obtain kaolin / TiO 2 nanocomposite particles. Then add 400ml 10M NaOH solution to the Teflon bottle, after heating to 120°C, slowly add the aforementioned kaolin / TiO 2 The nanocomposite p...

Embodiment 3

[0012] Example 3: firstly add 6g of kaolin to 13ml of absolute ethanol, fully stir at room temperature for 3 hours, at the same time mix 12ml of butyl titanate with 12ml of absolute ethanol, and drop it into the into the ethanol suspension of kaolin, further fully stirred for 5 hours, and now the Ti / soil ratio was 0.305; finally a certain amount of absolute ethanol containing a small amount of secondary deionized water was added dropwise, and the stirring was continued for 6 hours, and then the system was statically After leaving overnight, an opaque gel can be obtained; the gel is then dried at 80°C for 4 hours and at 90°C for 2 hours. After grinding, kaolin / titanium oxide-coated composite particles can be obtained, and then calcined at 200°C for 1 hour, 400°C for 1 hour, and 550°C for 2 hours to obtain kaolin / TiO 2 nanocomposite particles. Then add 400ml 10M NaOH solution to the Teflon bottle, after heating to 120°C, slowly add the aforementioned kaolin / TiO 2 The nanocompo...

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Abstract

The invention relates to kaolin / TiO2 nanotube composite particle electrorheological fluid materials, compared with the conventional materials, the prepared electrorheological liquid discontinuous phase material has unique structure and a shape similar to cactus, wherein the porcelain clay is used as the base stock, the TiO2 nanotube is distributed onto the surface of the porcelain clay. The structure can be applied for improving the dielectric property and electrical conductance of the material.

Description

technical field [0001] The invention relates to an electrorheological fluid material, in particular to a kaolin / TiO 2 Nanotube composite particle electrorheological fluid material. 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. The system can achieve liquid-solid transition instantly after applying an electric field, and the viscosity and yield stress of the system can change by more than an order of magnitude. At the same time, this transformation also has the advantages of reversibility, controllability, and quick response. Therefore, it is widely used in electromechanical conversion fields such as shock absorbers, clutches, dampers, drives, stepless speed control devices, and other fields such as artificial muscles, mechanical sensors, and touch screens. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/30C10M107/50
Inventor 赵晓鹏王宝祥姚远
Owner NORTHWESTERN POLYTECHNICAL UNIV
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