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Oxidation-resistant polyalphaolefin synthetic oil-based magnetic liquid and preparation method thereof

A technology of polyalphaolefin and magnetic liquid, which is applied in the field of nanoscience to achieve the effects of strong magnetic properties, strong oxidation resistance, and stable dispersion

Inactive Publication Date: 2016-05-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, oil-based magnetic fluids with excellent performance are rarely reported

Method used

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  • Oxidation-resistant polyalphaolefin synthetic oil-based magnetic liquid and preparation method thereof
  • Oxidation-resistant polyalphaolefin synthetic oil-based magnetic liquid and preparation method thereof
  • Oxidation-resistant polyalphaolefin synthetic oil-based magnetic liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1 prepares Co 0.2 mn 0.8 Fe 2 o 4 Polyalphaolefin synthetic oil-based magnetic fluid

[0061] S1. Preparation of Nano D x m 1-x Fe 2 o 4 Magnetic Particles:

[0062] Prepare 100mlCo 2+ , Mn 2+ , Fe 3+ A mixed solution of diethylene glycol (DEG), placed in a beaker, where Co 2+ The concentration is 0.08mol / L, Mn 2+ The concentration is 0.32mol / L, Fe 3+The concentration is 0.8mol / L. Prepare 120ml of NaOH aqueous solution with a concentration of 3mol / L and place it in a 500ml round bottom flask. Use argon as a protective atmosphere, heat up to the boiling of the NaOH solution (110-130°C), stir at a speed of 500r / min, slowly add the DEG solution of metal ions into the NaOH solution for 10 minutes, and continue the reaction for 5 minutes to prepare Nano Co 0.2 mn 0.8 Fe 2 o 4 magnetic particles;

[0063] S2. The magnetic nanoparticle Co obtained in S1 0.2 mn 0.8 Fe 2 o 4 For purification:

[0064] Nano-Co obtained from S1 0.2 mn 0.8 Fe ...

Embodiment 2

[0075] Example 2Mn 0.5 Zn 0.5 Fe 2 o 4 Polyalphaolefin synthetic oil-based magnetic fluid

[0076] S1. Preparation of Nano D x m 1-x Fe 2 o 4 Magnetic Particles:

[0077] Prepare 100ml Mn 2+ , Zn 2+ , Fe 3+ A mixed solution of diethylene glycol (DEG), placed in a beaker, where Mn 2+ The concentration is 0.2mol / L, Zn 2+ The concentration is 0.2mol / L, Fe 3+ The concentration is 0.8mol / L. Prepare 120ml of NaOH aqueous solution with a concentration of 3mol / L and place it in a 500ml round bottom flask. Using argon as a protective atmosphere, raise the temperature until the NaOH solution boils (110-130°C), and at a stirring speed of 500r / min, slowly add the DEG solution of metal ions into the NaOH solution for 10 minutes, and continue the reaction (110-130°C). 130°C) for 5 minutes to produce nano Mn 0.5 Zn 0.5 Fe 2 o 4 magnetic particles;

[0078] S2. Purifying the magnetic nanoparticles:

[0079] Nano-Mn obtained from S1 0.5 Zn 0.5 Fe 2 o 4 The magnetic par...

Embodiment 3

[0087] Embodiment 3 prepares Mg 0.5 Zn 0.5 Fe 2 o 4 Polyalphaolefin synthetic oil-based magnetic fluid

[0088] S1. Preparation of Nano D x m 1-x Fe 2 o 4 Magnetic Particles:

[0089] Prepare 100ml Mg 2+ , Zn 2+ , Fe 3+ A mixed solution of diethylene glycol (DEG), placed in a beaker, where Mg 2+ The concentration is 0.2mol / L, Zn 2+ The concentration is 0.2mol / L, Fe 3+ The concentration is 0.8mol / L. Prepare 120ml of NaOH aqueous solution with a concentration of 3mol / L and place it in a 500ml round bottom flask. Using argon as a protective atmosphere, raise the temperature until the NaOH solution boils, and the stirring speed is 500r / min. Slowly add the DEG solution of metal ions into the NaOH solution for 10 minutes, and continue the reaction for 5 minutes to prepare nano-Mg 0.5 Zn 0.5 Fe 2 o 4 magnetic particles;

[0090] S2. Purifying the magnetic nanoparticles:

[0091] Nano-Mg obtained from S1 0.5 Zn 0.5 Fe 2 o 4 The magnetic particles were washed repe...

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Abstract

The invention relates to the field of nanoscale science and technology, and discloses magnetic liquid based on oxidation-resistant alpha olefin synthetic oil and a preparation method of the magnetic liquid based on the oxidation-resistant alpha olefin synthetic oil. The magnetic liquid comprises magnetic nano-particles, surfactants and carrier liquid, and is characterized in that the magnetic nano-particles are ferrite-class magnetic particles DxM1-xFe2O4, wherein the D and the M are Co, Mn, Ni, Mg or Zn, and x=0-1, and the carrier liquid is the alpha olefin synthetic oil or mixed oil with the alpha olefin synthetic oil and other basic oil. According to the magnetic liquid based on the oxidation-resistant alpha olefin synthetic oil and the preparation method of the magnetic liquid based on the oxidation-resistant alpha olefin synthetic oil, the DxM1-xFe2O4 magenetic particles are small in particle diameter, overcome the defects that existing magnetic liquid is poor in oxidation resistance and stability, and the like, are good in oxidation resistance, good in modification effect, and are capable of being dispersed in the carrier liquid, and good magnetic performance can be kept for a long time under a high-temperature environment. The preparation method of the magnetic liquid based on the oxidation-resistant alpha olefin synthetic oil is simple in operation, high in production efficiency, and low in requirement on equipment, and has good application prospects.

Description

technical field [0001] The invention relates to the field of nano science and technology, in particular to the preparation, surface modification and dispersion technology of nano powder, and more specifically to an oxidation-resistant polyalphaolefin synthetic oil-based magnetic liquid and a preparation method thereof. Background technique [0002] Magnetic liquid is a uniform and stable colloidal solution formed by dispersing nano-scale magnetic particles well-coated with surfactants in carrier liquid, so it has both magnetic properties and fluidity, and has special physical properties and chemical properties. It is mainly composed of three parts: nano magnetic particles, surfactant and carrier liquid. The preparation methods of nano-magnetic particles mainly include mechanical grinding method, chemical co-precipitation method, thermal decomposition method and reduction method, etc. Among them, chemical co-precipitation method is a relatively economical and efficient method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/44
Inventor 庄琳沈辉周吉祥
Owner SUN YAT SEN UNIV
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