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Titanium oxide oil base nanofluid

A technology of nanofluid and titanium oxide, which is applied in the direction of base materials, petroleum industry, additives, etc., can solve the problems of difficult dispersion, restricting the wide application of nanofluid, and poor anti-sedimentation stability, and achieves simple and easy preparation process, The effect of low raw material price and easy control of the reaction process

Inactive Publication Date: 2008-12-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nanofluid preparation method mainly disperses nanopowder directly in a specific medium, which generally has the problems of difficult dispersion and poor anti-sedimentation stability, which seriously restricts the wide application of nanofluid.

Method used

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  • Titanium oxide oil base nanofluid
  • Titanium oxide oil base nanofluid
  • Titanium oxide oil base nanofluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment one: (pure TiO 2 -transformer oil nanofluid)

[0016] Mix 14ml of oleic acid, 10ml of triethylamine, and 50ml of petroleum ether in a 250ml beaker, and stir magnetically at 40-50°C for 30min. Add 2ml of n-butyl titanate dropwise to the mixed solution while stirring vigorously, transfer it into a 100ml pressure melting bomb after 30min, and react at 150°C for 48h. Cool the pressure solution bomb to room temperature, and the obtained reddish-brown transparent TiO 2 Petroleum ether sol. To TiO 2 Add about 100ml of absolute ethanol to the petroleum ether sol, because the colloidal particles coagulate and white precipitates out, let stand, remove the supernatant, add 100ml of absolute ethanol to the beaker again, stir well and let stand again, remove the supernatant, Add absolute ethanol to the precipitate and stir thoroughly, filter with a funnel, disperse the wet filter cake in 50ml of transformer oil, grind it evenly, and magnetically stir at 50-60°C for 1 ...

Embodiment 2

[0017] Embodiment two: (pure TiO 2 -Liquid paraffin nanofluid)

[0018] Mix 14ml of oleic acid, 10ml of triethylamine, and 50ml of petroleum ether in a 250ml beaker, and stir magnetically at 40-50°C for 30min. While stirring, add 2ml of n-butyl titanate dropwise to the mixed solution, transfer it into a 100ml pressure melting bomb after 30min, and react at 150°C for 48h. Cool the pressure solution bomb to room temperature, and the obtained reddish-brown transparent TiO 2 Petroleum ether sol. To TiO 2 Add about 100ml of absolute ethanol to the petroleum ether sol, because the colloidal particles coagulate and white precipitates out, let stand, remove the supernatant, add 100ml of absolute ethanol to the beaker again, stir well and let stand again, remove the supernatant, Add absolute ethanol to the precipitate and stir thoroughly, filter with a funnel, disperse the wet filter cake in 50ml of liquid paraffin, grind it evenly, and magnetically stir at 50-60°C for 1 hour to ob...

Embodiment 3

[0019] Embodiment three: (doped with lanthanum TiO 2 -transformer oil nanofluid)

[0020] 14ml oleic acid, 10ml triethylamine and 3%-10% LaCl 3 ·xH 2 Mix O in a 250ml beaker and stir magnetically at 40-50°C until dissolved, then add 50ml of petroleum ether and stir evenly. Add 2ml of n-butyl titanate dropwise to the mixed solution, stir for 30min, then transfer to a 100ml pressure melting bomb, and react at 150°C for 48h. Cool the pressure solution bomb to room temperature, and the obtained light yellow transparent lanthanum-doped TiO 2 Petroleum ether sol. To TiO 2 Add about 100ml of absolute ethanol to the petroleum ether sol, because the colloidal particles coagulate and white precipitates out, let stand, remove the supernatant, add 100ml of absolute ethanol to the beaker again, stir well and let stand again, remove the supernatant, Add absolute ethanol to the precipitate and stir thoroughly, filter with a funnel, disperse the wet filter cake in 50ml of transformer oi...

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Abstract

The invention relates to a titanium oxide oil base nanometer fluid, the disperse phase of which is nanometer titanium oxide that contains a surfactant and can be adulterated with metal ions, and the continuous phase of which is transformer oil or fluid wax, wherein, oleic acid is taken as the surfactant, which can obviously improve the compatibility of the disperse phase nanometer titanium oxide and the continuous phase. Compared with traditional nanometer fluid, the nanometer fluid of the invention has transparent appearance and high anti-sedimentation stability, and does not agglomerate or subside after being placed for a long period of time. As the TiO2 oil base nanometer fluid has very low current density when an electric field is applied and titanium oxide has high dielectric constant, the material can be applied to fulfilling electric control, overcomes the disadvantages of being easy to subside, poor fluidity and high leakage current density of traditional ER fluid and is hopefully applied to microfluid chips.

Description

technical field [0001] The invention relates to a titanium oxide oil-based nanofluid material, in particular to TiO 2 -Transformer oil and TiO 2 - Liquid paraffin nanofluid material. Background technique [0002] Nanofluid is a suspended and stable system in which nanomaterials are dispersed in a specific liquid medium, such as slurry, sol, etc., and the size of nanomaterials is generally 1-100nm. Researchers' traditional research on nanofluids mainly focuses on the heat transfer characteristics and enhanced heat transfer mechanism of nanofluids. The research results have been applied in many aspects such as energy production, power supply, engine cooling, and microchannel cooling in integrated circuits. . At present, there are many new trends in the field of nanofluid research, such as new nanofluids with nano-droplets added. TiO 2 The main component of nanofluid is nanoscale titanium dioxide, which not only has TiO 2 It has the advantages of high dielectric constant,...

Claims

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Application Information

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IPC IPC(8): C10M159/12C10M107/00C10M125/10C10N40/14
Inventor 赵晓鹏卢倩叶茂峰
Owner NORTHWESTERN POLYTECHNICAL UNIV
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