CN106298145A - A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function - Google Patents
A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function Download PDFInfo
- Publication number
- CN106298145A CN106298145A CN201610847598.7A CN201610847598A CN106298145A CN 106298145 A CN106298145 A CN 106298145A CN 201610847598 A CN201610847598 A CN 201610847598A CN 106298145 A CN106298145 A CN 106298145A
- Authority
- CN
- China
- Prior art keywords
- sodium
- liquid
- magnetic
- particle
- potassium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
- H01F1/442—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids the magnetic component being a metal or alloy, e.g. Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/16—Carbonyls
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C24/00—Alloys based on an alkali or an alkaline earth metal
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Lubricants (AREA)
Abstract
The present invention relates to a kind of sodium-potassium eutectic based magnetic liquid with conducting function and preparation method, by using sodium-potassium eutectic as the carrier fluid of magnetic liquid, with nanometer carbonyl iron as magnetic-particle, the magnetic liquid saturation magnetization obtained is higher, good conductivity, good fluidity, the shortcoming overcoming tradition brush, compensate for the deficiency of existing conventional magnetic liquid kind；The sodium-potassium eutectic based magnetic liquid that the present invention obtains has potential using value in electronic engineering field.
Description
Technical field
The present invention relates to a kind of sodium-potassium eutectic based magnetic liquid and preparation method thereof, belong to the field of functional material.
Background technology
In a lot of occasions, such as various double current generators, synchronous motor, storage battery dc motor, crane motor current collection
Ring, various electric welding machine etc., it usually needs use metallic brush or carbon brush to be formed be electrically connected as making sliding contact with movement parts
A kind of conductive component connect.Along with the development of science and technology, the kind of motor and the working condition of use are more and more diversified, make
Traditional solid brush frictional heating at high speeds, serious wear, cause brush changing frequently, the life-span shorter.It is contemplated that
If liquid metals brush can be used should to can solve the friction and heating problem caused at a high speed, such as sodium-potassium eutectic, gallium indium
Alloy, hydrargyrum etc..Though but problem is metal liquid has good electric conductivity, but its mobility is unfavorable for controlling simultaneously.Magnetic
Property liquid is a kind of novel nano-functional material, has the magnetic of solid and the mobility of liquid due to it simultaneously and has perhaps
Many unique character, one of them most important characteristic can be by magnetic field and controls magnetic liquid in required position, example
As magnetic liquid is used for sealing and the heat radiation etc. of specific part.The basic composition of magnetic liquid includes magnetic-particle, carrier fluid and table
Face activating agents etc., wherein carrier fluid is as the important component part of magnetic liquid, has its rheological property and physicochemical properties
Very important impact, therefore when selecting magnetic liquid, the kind of carrier fluid is overriding concern factor.At present, many both at home and abroad
The research that the magnetic liquid of different carrier fluid bases is correlated with by expert, but due to the difficulty prepared and feasibility, existing magnetic
Property liquid carrier is mainly based on various Organic substances and water.Owing to Organic substance and water-base magnetic liquid do not have electric conductivity, limit
Its possible application in the electronic engineering field needing conducting function.The sodium-potassium eutectic existed with liquid at normal temperatures and pressures,
Owing to having the characteristics such as low melting point, high boiling point, low-vapor pressure, good electrical and thermal conductivity so that it is become and there is conducting function
The excellent selection of magnetic liquid carrier fluid.
Summary of the invention
For overcoming the shortcoming of conventional solid brush, making up the deficiency of existing conventional magnetic liquid kind, the present invention provides one
Planting good conductivity, good fluidity, what saturation magnetization was higher can be applicable to the sodium-potassium eutectic base magnetic liquid in electronic engineering field
Body and preparation technology thereof.
The present invention is achieved in the following ways:
A kind of sodium-potassium eutectic based magnetic liquid with conducting function, comprises magnetic-particle and alloy carrier fluid；Described magnetic
Granule is 1:30 with the mass ratio of alloy carrier fluid.
Preferably, described magnetic-particle is nanometer carbonyl iron magnetic-particle；Described alloy carrier fluid is liquid potassium sodium alloy.
The preparation method of above-mentioned sodium-potassium eutectic based magnetic liquid is, prepares nanometer initially with progressively warming liquid phase decomposition method
Carbonyl iron magnetic-particle；Then, under kerosene is protected, will obtain after simple metal K and simple metal Na mechanical mixture according to a certain percentage
Liquid potassium sodium alloy；Equally under kerosene is protected, sodium-potassium eutectic is carried and passes through mechanical agitation with nanometer carbonyl iron magnetic-particle night
And ultrasonic disperse, prepare sodium-potassium eutectic based magnetic liquid.
Above-mentioned method comprises the steps:
1) progressively warming liquid phase decomposition method is used to prepare nanometer carbonyl iron magnetic-particle；
2) under kerosene is protected, by simple metal K and simple metal Na according to the ratio mechanical mixture of 3:1, obtain after 24 hours
Liquid potassium sodium alloy；
3) the nanometer carbonyl iron magnetic-particle obtained in above-mentioned steps (1) is weighed, join in beaker, then add
Enter a certain amount of kerosene；
4) for be expelled under the kerosene liquid level that above-mentioned steps (3) obtains by sodium-potassium eutectic, mechanical agitation is the most ultrasonic in 30 DEG C
Disperse some hours, i.e. obtain silver gray sodium-potassium eutectic based magnetic liquid.
Preferably, in step (1), the preparation method of described nanometer carbonyl iron magnetic-particle is: by 19.6gFe
(CO)5, 29.2g dimethylformamide (C3H7NO) and 0.7g amino-terminated polyurethane joins in there-necked flask, then stirring is installed
Device, inserts thermometer, breather and condensing tube, stirs with the rotating speed of 300r/min, and starts slowly to heat up, when temperature arrives
Having reacted when 150 DEG C, transferred to product be centrifuged precipitation in concentrator bowl after having reacted, filtering vacuum is drying to obtain to be received
Rice carbonyl iron magnetic-particle.
Preferably, in step (2), the atom mass rate of described simple metal K and simple metal Na is 39:23.
Preferably, in step (2), the purity of described simple metal K and simple metal Na is 99.999%.
Preferably, in step (3), described nanometer carbonyl iron magnetic-particle is 1:30 with the mass ratio of alloy carrier fluid.
The application in motor brush of the above-mentioned sodium-potassium eutectic based magnetic liquid with conducting function.
The present invention use under room temperature the sodium-potassium eutectic in liquid condition as the carrier fluid of magnetic liquid, by ferromagnetic for nanometer carbonyl
Property granule is dispersed in alloy carrier fluid, prepares alloy carrier fluid based magnetic liquid, and such magnetic liquid has excellent simultaneously
Mobility, electric conductivity and magnetic behavior.
The present invention, by using sodium-potassium eutectic as the carrier fluid of magnetic liquid, with nanometer carbonyl iron as magnetic-particle, obtains
The magnetic liquid saturation magnetization obtained is higher, good conductivity, good fluidity, the shortcoming overcoming tradition brush, supplements existing
The kind of row magnetic liquid.The sodium-potassium eutectic based magnetic liquid that the present invention obtains has potential application valency in electronic engineering field
Value.
Accompanying drawing explanation
Fig. 1 prepares the schematic diagram of sodium-potassium eutectic carrier liquid magnetic liquid under kerosene is protected.
The VSM curve chart of Fig. 2 sodium-potassium eutectic based magnetic liquid.
In Fig. 1: syringe (1), kerosene (2), sodium-potassium eutectic (3), nanometer carbonyl iron magnetic-particle (4), agitator (5)；
In conjunction with accompanying drawing, the invention will be further described.
In beaker, pour load weighted nanometer carbonyl iron magnetic-particle into, be subsequently adding kerosene；For avoid sodium-potassium eutectic with
The contact of air, inserts under kerosene liquid level by syringe needle, promotes needle tubing to inject a certain amount of sodium-potassium eutectic liquid, passes through machine
Tool stirring and ultrasonic disperse can obtain sodium-potassium eutectic based magnetic liquid.Owing to this magnetic liquid uses sodium-potassium eutectic as load
Liquid, nanometer carbonyl iron dust is as magnetic-particle, and therefore this kind of magnetic liquid saturation magnetization is higher, and has the high heat of metal
Conductivity and electric conductivity, have potential using value in electronic engineering field.
Specific implementation method
Further illustrate below in conjunction with embodiment:
Raw material has: 99.999% pure K and Na metal, Fe (CO)5, dimethylformamide (C3H7NO), the poly-ammonia of Amino End Group
Ester, KMnO4Solution, argon.
By simple metal K and simple metal Na according to ratio mechanical mixture under the protection of kerosene of 3:1, after 24 hours, obtain liquid
State KNa alloy.
By 19.6gFe (CO)5, 29.2g dimethylformamide (C3H7And 0.7g amino-terminated polyurethane joins three mouthfuls of burnings NO)
In Ping, then agitating device is installed, inserts thermometer and breather, and 2 air set pipes connected, the one of condensing tube are installed
End connects airway, and the other end of airway is placed on KMnO4In solution, after noble gas of substituting the bad for the good (argon), with 300r/min
Rotating speed stirring, and start slowly to heat up, reacted when temperature arrives 150 DEG C, after having reacted, product is transferred to from
Being centrifuged precipitation in heart cylinder, filtering vacuum is drying to obtain nanometer carbonyl iron magnetic-particle.
Nanometer carbonyl iron magnetic-particle is weighed, joins in beaker, be subsequently adding a certain amount of kerosene.By potassium sodium
Aluminium alloy injects in syringe, is inserted by syringe needle under kerosene liquid level, and pushing syringe injects a certain amount of sodium-potassium eutectic
Liquid, mechanical agitation in some hours of 30 DEG C of ultrasonic disperse, i.e. obtain silver gray sodium-potassium eutectic based magnetic liquid.
Take a certain amount of sodium-potassium eutectic based magnetic liquid, carry out VSM test and characterize.
Claims (9)
1. there is a sodium-potassium eutectic based magnetic liquid for conducting function, including magnetic-particle and alloy carrier fluid, it is characterised in that
Described alloy carrier fluid is liquid potassium sodium alloy；Described magnetic-particle is 1:30 with the mass ratio of alloy carrier fluid.
The sodium-potassium eutectic based magnetic liquid with conducting function the most according to claim 1, it is characterised in that described magnetic
Granule is nanometer carbonyl iron magnetic-particle.
3. the sodium-potassium eutectic based magnetic liquid preparation method described in a claim 1 or 2, it is characterised in that initially with by
Step warming liquid phase decomposition method prepares nanometer carbonyl iron magnetic-particle；Then, under kerosene is protected, simple metal K and simple metal Na is pressed
According to obtaining liquid potassium sodium alloy after certain proportion mechanical mixture；Equally under kerosene is protected, sodium-potassium eutectic is carried night and nanometer carbonyl
Base ferromagnetic particle passes through mechanical agitation and ultrasonic disperse, prepares sodium-potassium eutectic based magnetic liquid.
Method the most according to claim 3, it is characterised in that comprise the steps:
1) progressively warming liquid phase decomposition method is used to prepare nanometer carbonyl iron magnetic-particle；
2) under kerosene is protected, by simple metal K and simple metal Na according to the ratio mechanical mixture of 3:1, liquid after 24 hours, is obtained
Sodium-potassium eutectic；
3) the nanometer carbonyl iron magnetic-particle obtained in above-mentioned steps (1) is weighed, join in beaker, be subsequently adding one
Quantitative kerosene.
4) sodium-potassium eutectic is expelled under the kerosene liquid level that above-mentioned steps (3) obtains, if mechanical agitation in 30 DEG C of ultrasonic disperse
Dry hour, i.e. obtain silver gray sodium-potassium eutectic based magnetic liquid.
Method the most according to claim 4, it is characterised in that in step (1), the preparation of described carbonyl iron magnetic-particle
Method is: by 19.6gFe (CO)5, 29.2g dimethylformamide (C3H7And 0.7g amino-terminated polyurethane joins three mouthfuls of burnings NO)
In Ping, then agitating device is installed, inserts thermometer, breather and condensing tube, stir with the rotating speed of 300r/min, and start to delay
Slow intensification, has reacted when temperature arrives 150 DEG C, transfers to product be centrifuged precipitation in concentrator bowl after having reacted,
Filtering vacuum is drying to obtain nanometer carbonyl iron magnetic-particle.
Method the most according to claim 4, it is characterised in that in step (2), described simple metal K's and simple metal Na is former
Protonatomic mass is than for 39:23.
Method the most according to claim 4, it is characterised in that in step (2), described simple metal K's and simple metal Na is pure
Degree is 99.999%.
Method the most according to claim 4, it is characterised in that in step (3), described nanometer carbonyl iron magnetic-particle and conjunction
The mass ratio of gold carrier fluid is 1:30.
9. the application in motor brush of the sodium-potassium eutectic based magnetic liquid with conducting function described in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847598.7A CN106298145A (en) | 2016-09-23 | 2016-09-23 | A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847598.7A CN106298145A (en) | 2016-09-23 | 2016-09-23 | A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106298145A true CN106298145A (en) | 2017-01-04 |
Family
ID=57714862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610847598.7A Pending CN106298145A (en) | 2016-09-23 | 2016-09-23 | A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106298145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424716A (en) * | 2017-08-25 | 2017-12-01 | 清华大学 | Magnetic liquid and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070063166A1 (en) * | 2005-09-16 | 2007-03-22 | Ulicny John C | High temperature magnetorheological fluid compositions and devices |
| CN104124031A (en) * | 2013-04-28 | 2014-10-29 | 中国科学院理化技术研究所 | Magnetic nanometer-sized metal fluid and preparation method thereof |
| CN104343928A (en) * | 2013-07-31 | 2015-02-11 | 中国科学院理化技术研究所 | Hydraulic transmission gear on basis of liquid metal |
-
2016
- 2016-09-23 CN CN201610847598.7A patent/CN106298145A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070063166A1 (en) * | 2005-09-16 | 2007-03-22 | Ulicny John C | High temperature magnetorheological fluid compositions and devices |
| CN104124031A (en) * | 2013-04-28 | 2014-10-29 | 中国科学院理化技术研究所 | Magnetic nanometer-sized metal fluid and preparation method thereof |
| CN104343928A (en) * | 2013-07-31 | 2015-02-11 | 中国科学院理化技术研究所 | Hydraulic transmission gear on basis of liquid metal |
Non-Patent Citations (2)
| Title |
|---|
| 《无机化学演示实验》编写组: "《高等学校教学参考书 无机化学演示实验》", 31 October 1980 * |
| 赵素玲等: "羰基铁粒子的制备与表征", 《武汉理工大学学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424716A (en) * | 2017-08-25 | 2017-12-01 | 清华大学 | Magnetic liquid and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108085519A (en) | A kind of method and its application that micro-nano granules are adulterated into liquid metal | |
| CN105950904B (en) | A kind of preparation method of silvering graphite alkene enhancing copper-based electric contact material | |
| US8647534B2 (en) | Copper-carbon composition | |
| CN107350663B (en) | Liquid metal enhances base nano mattisolda thermal interfacial material and preparation method thereof | |
| CN104862512A (en) | Method for improving graphene and copper basal body binding force in copper-based graphene composite material | |
| CN100560762C (en) | Nanometer and submicron aluminum oxide mixing enhancement copper-base composite material and preparation method | |
| CN103223494B (en) | Preparation method of tungsten copper oxide composite powder through hydro-thermal synthesis | |
| CN107433402B (en) | A kind of preparation method and applications of graphene-nano mattisolda | |
| Liu et al. | Effects of coating process on the characteristics of Ag–SnO2 contact materials | |
| CN105217622A (en) | A kind of preparation method of controlled three-dimensional grapheme microballoon | |
| CN105695791B (en) | A kind of new silver rare earth oxide alloy and preparation method thereof | |
| CN103056366A (en) | Preparation method for porous stainless steel | |
| CN105469849A (en) | Conductive silver paste capable of being sintered at low temperature and preparation method therefor | |
| CN106298145A (en) | A kind of preparation method of the sodium-potassium eutectic based magnetic liquid with conducting function | |
| Li et al. | The novel Cu nanoaggregates formed by 5 nm Cu nanoparticles with high sintering performance at low temperature | |
| CN104498914A (en) | Method for preparing silver-tin oxide electrical contact material by virtue of sol-gel technique | |
| CN103752843B (en) | A kind of synthetic method of superfine cupper powder | |
| CN102708943B (en) | Low-temperature sintered highly-heat-conductive and highly-electric-conductive silver paste, preparation method and sintering method | |
| Lei et al. | In-situ de-wetting assisted fabrication of spherical Cu-Sn alloy powder via the reduction of mixture metallic oxides | |
| CN104810465B (en) | Cu2-xS thermoelectric material preparation method | |
| CN111531165A (en) | Copper paste for ultrathin phase-change heat dissipation module | |
| CN105990279B (en) | A kind of preparation facilities and method of metal heat interface material | |
| Dai et al. | Phase-relationships in the system Fe-Na-O | |
| CN106810260A (en) | A kind of preparation method of tungsten carbide-base non-bond cemented carbide | |
| CN104766687A (en) | Alloyed carried liquid magnetic liquid and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170104 |