CN1979700A - Electrostatic stable nickel-zinc ferrite magnetic fluid and its preparing method and use - Google Patents
Electrostatic stable nickel-zinc ferrite magnetic fluid and its preparing method and use Download PDFInfo
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- CN1979700A CN1979700A CN 200610151005 CN200610151005A CN1979700A CN 1979700 A CN1979700 A CN 1979700A CN 200610151005 CN200610151005 CN 200610151005 CN 200610151005 A CN200610151005 A CN 200610151005A CN 1979700 A CN1979700 A CN 1979700A
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- zinc ferrite
- magnetic fluid
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- stable nickel
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Abstract
The static stable Ni-Zn ferrite magnetic-fluid and its preparation method and application involves in a kind of ferrite magnetic-fluid material and its preparation method and application, which solves the problems of low output and complicated preparation technology as wellas it needs to add one or more organic surfactants as the dispersant. Its molecular formula is: NiXZn1-XFe2O4. Its preparation method is as follows: a. dissove all raw materials by deionized water , and then mix them again; b. Heating the NaOH solution till it boils, and then add the mixed solution, the magnetic particles will be made after the reaction lasts 0.5~2 hours; c. Wash first the magnetic particles by the solvent that ca remove the ion, and then rinse by thin nitric acid; d. Boil the magnetic particles that has been placed over 6~24 hours by nitric acid solution for 15~60 minutes; e. After being dried by vacuum, then the solution with different concentration is made of such magnetic particles. The products is of good absorption performance for microwave, well-proportioned particle, good stability and other advantages. The preparation method of this invention is of the features of low cost, simple technical process and high yield.
Description
Technical field
The present invention relates to a kind of Ferrimagnetism fluid material and its production and application.
Background technology
Document Marcelo Henrique Sousa, Francisco Augusto Tourinho, Je ' ro^meDepeyrot,
*Geraldo Jose ' da Silva, Maria Cristina F.L.Lara, J.Phys.Chem.B2001,105, the 1168-1175 document adopts reverse coprecipitation, metal salt solution poured into fast in 100 ℃ the sodium hydroxide solution, the product that obtains is after the dilute nitric acid solution surface treatment, boil with iron nitrate solution immediately, the magnetic fluid stability that the particle that obtains is mixed with is fine, but further destroy product and adopt immediately with ferric nitrate and handle for fear of nitric acid in this document, the output of sample is reduced greatly, and the acidity of magnetic fluid is bigger, thereby has limited its application.
Summary of the invention
The objective of the invention is to add one or more organic surface active agents and do dispersant, yield poorly and the problem of complicated process of preparation in order to solve present preparation magnetic fluid.The invention provides a kind of preparation method and application of electrostatic stable nickel-zinc ferrite magnetic fluid.The molecular formula of product of the present invention is: Ni
XZn
1-XFe
2O
4, 0.1≤X in the formula≤0.5.Preparation method of the present invention is as follows: a, take by weighing following raw material in molar ratio: Fe (NO
3)
39H
2O: Zn (NO
3)
26H
2O: Ni (NO
3)
26H
2O=2: X: 1-X, 0.1≤X≤0.5 with each raw material deionized water dissolving, mixes then; B, sodium hydroxide solution is heated to boiling after, add mixed solution again, react and promptly obtained magnetic particle in 0.5～2 hour; C, fully clean magnetic particle with deionized water after, clean magnetic particle with rare nitric acid again; D and then the magnetic particle that rare nitric acid was washed are placed after 6～24 hours and were boiled 15～60 minutes with iron nitrate solution; E, the magnetic particle vacuumize under 120 ℃ of conditions after steps d is handled are mixed with magnetic particle the solution of any concentration again; Promptly obtain electrostatic stable nickel-zinc ferrite magnetic fluid.Product of the present invention is applied to prepare electromagnetic radiation preventing paint or fiber dyes.
The product placement that the invention reside in by nitric acid treatment is crossed improved output after 6 hours, and make test needn't reach under 100 ℃ the situation and can finish by the concentration of regulating alkali, this has just reduced requirement and loss to equipment simultaneously, thereby has reduced cost of manufacture.Material of the present invention also can be used as a kind of encapsulant.
Product of the present invention has excellent microwave absorption performance, and advantage such as uniform particles, good stability.Preparation method of the present invention has the advantage that cost is low, technical process is simple, output is high.
Embodiment
Embodiment one: the electrostatic stable nickel-zinc ferrite magnetic fluid molecular formula of present embodiment is: Ni
XZn
1-XFe
2O
4, 0.1≤X in the formula≤0.5.
Embodiment two: the preparation method of present embodiment is as follows: a, take by weighing following raw material in molar ratio: Fe (NO
3)
39H
2O: Zn (NO
3)
26H
2O: Ni (NO
3)
26H
2O=2: X: 1-X, 0.1≤X≤0.5 with each raw material deionized water dissolving, mixes then; B, sodium hydroxide solution is heated to boiling after, add mixed solution again, react and promptly obtained magnetic particle in 0.5～2 hour; C, fully clean magnetic particle with deionized water after, clean magnetic particle with rare nitric acid again; D and then the magnetic particle that rare nitric acid was washed are placed and were boiled 15～60 minutes with iron nitrate solution more later in 6～24 hours; E, the magnetic particle vacuumize under 120 ℃ of conditions after steps d is handled are mixed with magnetic particle the solution of any concentration again; Promptly obtain electrostatic stable nickel-zinc ferrite magnetic fluid.
Embodiment three: the molar concentration of the sodium hydroxide solution of present embodiment is 2～10mol/l.Other is identical with embodiment two.
Embodiment four: the molar concentration of the dilute nitric acid solution of present embodiment is 0.5～4mol/l.Other is identical with embodiment two.
Embodiment five: the iron nitrate solution molar concentration of present embodiment is 0.1～2mol/l.Other is identical with embodiment two.
Embodiment six: present embodiment takes by weighing following raw material in molar ratio in step a:
Fe(NO
3)
3·9H
2O∶Zn(NO
3)
2·6H
2O∶Ni(NO
3)
2·6H
2O＝4∶1∶1。Other is identical with embodiment two.
The magnetic particle uniform particles that present embodiment obtains, a footpath are 10～12nm.
Embodiment seven: present embodiment is used electrostatic stable nickel-zinc ferrite magnetic fluid and is prepared electromagnetic radiation preventing paint or fiber dyes.
The electrostatic stable nickel-zinc ferrite magnetic fluid of the present invention's preparation mixes with the organic solvent (methyl alcohol, ethanol, acetone, heptane, isopropyl alcohol or normal butane etc.) of any concentration, can obtain even clear solutions, electrostatic stable nickel-zinc ferrite magnetic fluid of this explanation the present invention preparation can be diluted into any concentration and its stability can not be destroyed, the function that the electromagnetic radiation of absorption medium-high frequency is arranged owing to electrostatic stable nickel-zinc ferrite magnetic fluid in addition, available its preparation electromagnetic radiation preventing paint or fiber dyes.
Product of the present invention has excellent microwave absorption performance, and advantage such as uniform particles, good stability.Preparation method of the present invention has the advantage that cost is low, technical process is simple, output is high.
Claims (7)
1, a kind of electrostatic stable nickel-zinc ferrite magnetic fluid is characterized in that its molecular formula is: Ni
xZn
1-xFe
2O
4, 0.1≤X in the formula≤0.5.
2, the preparation method of a kind of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 1 is characterized in that its preparation method is as follows: a, take by weighing following raw material in molar ratio: Fe (NO
3)
39H
2O: Zn (NO
3)
26H
2O: Ni (NO
3)
26H
2O=2: X: 1-X, 0.1≤X≤0.5 with each raw material deionized water dissolving, mixes then; B, sodium hydroxide solution is heated to boiling after, add mixed solution again, react and promptly obtained magnetic particle in 0.5～2 hour; C, fully clean magnetic particle with deionized water after, clean magnetic particle with rare nitric acid again; D and then the magnetic particle that rare nitric acid was washed are placed and were boiled 15～60 minutes with iron nitrate solution more later in 6～24 hours; E, the magnetic particle vacuumize under 120 ℃ of conditions after steps d is handled are mixed with magnetic particle the solution of any concentration again; Promptly obtain electrostatic stable nickel-zinc ferrite magnetic fluid.
3, the preparation method of a kind of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 2, the molar concentration that it is characterized in that sodium hydroxide solution is 2～10mol/l.
4, the preparation method of a kind of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 2, the molar concentration that it is characterized in that dilute nitric acid solution is 0.5～4mol/l.
5, the preparation method of a kind of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 2 is characterized in that the iron nitrate solution molar concentration is 0.1～2mol/l.
6, the preparation method of a kind of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 2 is characterized in that taking by weighing in molar ratio following raw material: Fe (NO in step a
3)
39H
2O: Zn (NO
3)
26H
2O: Ni (NO
3)
26H
2O=4: 1: 1.
7, the application of electrostatic stable nickel-zinc ferrite magnetic fluid according to claim 1 is characterized in that using its preparation electromagnetic radiation preventing paint or fiber dyes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610151005 CN1979700A (en) | 2006-11-10 | 2006-11-10 | Electrostatic stable nickel-zinc ferrite magnetic fluid and its preparing method and use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610151005 CN1979700A (en) | 2006-11-10 | 2006-11-10 | Electrostatic stable nickel-zinc ferrite magnetic fluid and its preparing method and use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1979700A true CN1979700A (en) | 2007-06-13 |
Family
ID=38130821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610151005 Pending CN1979700A (en) | 2006-11-10 | 2006-11-10 | Electrostatic stable nickel-zinc ferrite magnetic fluid and its preparing method and use |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI550041B (en) * | 2012-03-29 | 2016-09-21 | Mitsubishi Materials Corp | A method for forming a ferrous film for fat and iron, and a method for forming a ferritic iron film and a fat iron film formed by the method |
-
2006
- 2006-11-10 CN CN 200610151005 patent/CN1979700A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI550041B (en) * | 2012-03-29 | 2016-09-21 | Mitsubishi Materials Corp | A method for forming a ferrous film for fat and iron, and a method for forming a ferritic iron film and a fat iron film formed by the method |
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