Intercalation kaolin/modified titanium oxide nano composite particles electrorheological fluid

A nano-composite, electro-rheological fluid technology, applied in lubricating compositions, petroleum industry, additives, etc.

Inactive Publication Date: 2008-06-25
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The τ of various electrorheological fluids reported so far E / η 0 are relatively small

Method used

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  • Intercalation kaolin/modified titanium oxide nano composite particles electrorheological fluid
  • Intercalation kaolin/modified titanium oxide nano composite particles electrorheological fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: (intercalated kaolin / modified titanium oxide nanocomposite particles electrorheological fluid)

[0019] Measure 10ml-70ml formamide and 30ml deionized water into a 100ml beaker, add 1.5g kaolin, stir magnetically for 48-60 hours, centrifuge and wash the product with deionized water 1-2 times to obtain formamide-intercalated kaolin . Disperse the intercalated kaolin in 200ml deionized water, add 4g sodium dodecylbenzenesulfonate and stir for 5 hours. Add 5ml of butyl titanate, 50ml of absolute ethanol, 1ml of glacial acetic acid, and 0.6g of chromium nitrate to a 100ml beaker and stir for 3 hours, then slowly drop them into the above 200ml aqueous solution, and continue the reaction for 10 hours to 14 hours after the dropwise addition. Hours, vacuum filtration to obtain a loose green filter cake. Dry the filter cake at 60°C-90°C for 3 hours to 5 hours, grind it into powder in a mortar, then dry it at 60°C-80°C for 2-4 hours, and get intercalated kaolin after...

Embodiment 2

[0020] Example 2: (formamide intercalated kaolin / titanium oxide nanocomposite particles electrorheological fluid)

[0021] Measure 10ml-70ml formamide and 30ml deionized water into a 100ml beaker, add 1.5g kaolin, stir magnetically for 48-60 hours, centrifuge and wash the product with deionized water 1-2 times to obtain formamide-intercalated kaolin . Disperse the intercalated kaolin in 200ml deionized water, add 4g sodium dodecylbenzenesulfonate and stir for 5 hours. Add 5ml of butyl titanate, 50ml of absolute ethanol, and 1ml of glacial acetic acid to a 100ml beaker in turn and stir for 3 hours, then slowly drop them into the above 200ml aqueous solution, continue to react for 10-14 hours after the dropwise addition, and vacuum filter Get a loose filter cake. Dry the filter cake at 60°C-90°C for 3-5 hours, grind it into a powder in a mortar and then dry it at 60°C-80°C for 2 hours-4 hours, and formamide intercalation can be obtained after thorough grinding Kaolin / TiO nano...

Embodiment 3

[0022] Example Three: (Kaolin / Modified Titanium Oxide Nanocomposite Particle Electrorheological Fluid)

[0023] Disperse 1.5 g of kaolin in 200 ml of deionized water and add 4 g of sodium dodecylbenzenesulfonate and stir for 5 hours. Add 5ml of butyl titanate, 50ml of absolute ethanol, 1ml of glacial acetic acid, and 0.6g of chromium nitrate to a 100ml beaker and stir for 3 hours, then slowly drop them into the above 200ml aqueous solution, and continue the reaction for 10 hours to 14 hours after the dropwise addition. Hours, vacuum filtration to obtain a loose green filter cake. Dry the filter cake at 60°C to 90°C for 3 hours to 5 hours, grind it into powder in a mortar and then dry it at 60°C to 80°C for 2 to 4 hours. Titanium oxide nanocomposite particles. Mix the prepared nanocomposite particles and methyl silicone oil evenly at 2g / 1ml, the relationship between the shear stress of the prepared electrorheological fluid and the electric field intensity is as follows: figu...

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Abstract

The invention discloses a current liquid-changing material of intercalation kaolin / modified titanium oxide nanometer composite particle, which is characterized by the following: adopting formamide intercalation kaolin micrometer particle as core of dispersing phase; making chromium ion modified titanium oxide nanometer particle as micrometer / nanometer nuclear shell structure particle of clad layer; improving TauE / eta0 value of current liquid-changing material and physical value excited by electric field; increasing sediment-proof property; displaying the relationship of cutting stress and electric field strength of different dispersing particle currents in the accompanying diagram.

Description

technical field [0001] The invention relates to an electrorheological fluid material, in particular to an electrorheological fluid intercalated kaolin / modified titanium oxide nanocomposite particles. Background technique [0002] Electrorheological Fluids (ERF for short) is an important smart material, which has the quality of controlled changes, and its yield stress and elastic modulus change with the change of the applied electric field. Electrorheological fluid has wide potential application value in many fields such as shock absorbers, clutches, dampers, drives, stepless speed regulation and other devices. In the design of electrorheological devices, the ratio of the field-induced shear stress at a certain shear rate to the zero-field viscosity of the electrorheological fluid τ is usually used E / η 0 To measure the performance of electrorheological fluid and determine the force control range of electrorheological devices (τ E is the shear yield stress of the electrorh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/10C10N40/14
Inventor 赵晓鹏王宝祥赵艳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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