CN108384243A - A kind of magnetic composite and preparation method thereof - Google Patents
A kind of magnetic composite and preparation method thereof Download PDFInfo
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- CN108384243A CN108384243A CN201810173622.2A CN201810173622A CN108384243A CN 108384243 A CN108384243 A CN 108384243A CN 201810173622 A CN201810173622 A CN 201810173622A CN 108384243 A CN108384243 A CN 108384243A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0843—Cobalt
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
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Abstract
A kind of magnetic composite and its preparation method, include the following steps：It is prepared by magnetic powder：Magnetic material is prepared into the magnetic powder that grain size is less than 800 mesh；Mixing：Magnetic powder is uniformly mixed with high molecular material, is made magnetic mixing material, the mass ratio of the magnetic powder and macromolecule mixture is 1:4‑5；It is hot-forming：Magnetic composite is made after magnetic mixing material is carried out hot-press solidifying, wherein pressure is 2 20MPa, and temperature is 80 300 DEG C.Above-mentioned technical proposal mixes magnetic powder with high molecular material, magnetic composite is prepared using pressure sintering, prepared magnetic composite is soft material, can be widely applied to the fields such as direct current micromotor magnet, pneumatic element magnet ring, automobile instrument magnet ring, decoration damping magnet.This method is easy to operate, and gained magnetic composite has good magnetic property, mechanical strength and biocompatibility, is suitable for large-scale industrial production, has prodigious economic value.
Description
Technical field
The present invention relates to material engineering, more particularly to a kind of magnetic composite and preparation method thereof.
Background technology
Magnetism is change of the ferromagnetic material (magnetic material) due to magnetized state, and size changes in all directions.Magnetic
Under magnetic fields, length changes property material, can be subjected to displacement and do work or can occur repeatedly in action of alternating magnetic field
It upholds and shortens, to generate vibration or sound wave, electromagnetic energy (or electromagnetic information) can be converted into mechanical energy or sound by this material
Energy (or mechanical displacement information or acoustic intelligence), can also be converted into electromagnetic energy by mechanical energy (or mechanical displacement and information) on the contrary
(or electromagnetic information).Magnetic material is important energy and information conversion function material.
The preparation method of magnetic composite includes method of electrostatic spinning, 3D printing, hydro-thermal method, sol-gal process, electrochemistry
Sedimentation etc..
What increase of production was most fast in magnetic function composite material is isotropism Nd-Fe-B bonded permanent magnets.At past 20 years
In, Nd-Fe-B bonded permanent magnets have become building site and occupy market, have been widely used in household electrical appliance and office appliance.It is magnetic
Composite material is used for door of refrigerator strip of paper used for sealing production line.Micro machine and colour television set kinescope assemble component magnetic function composite wood
The higher plastic magnet research of the performances such as material is less.Domestic application it is more be ferrite magnetic functional composite material and terres rares magnetic
Functional composite material.The cheap magnetic property of ferrite magnetic functional composite material is relatively low, terres rares magnetic function composite property
It is higher, it is expensive, it is suitable for miniature device.Magnetic composite is non-conductive there are one important characteristic, thus is suitable for
Place with high frequency magnetic field.It may be selected plastics of different nature and rigidity or flexible article be made as base material simultaneously so that
The design of product is more flexible compared with compared with sintered magnet.Its market situation is as follows：(1) direct current micromotor magnet (2) pneumatic element
Magnet ring (3) automobile instrument magnet ring (4) decorates damping magnet.
Invention content
For this reason, it may be necessary to provide a kind of simple magnetic composite of preparation method and preparation method thereof.
To achieve the above object, a kind of preparation method of magnetic composite is inventor provided, is included the following steps：
It is prepared by magnetic powder：Magnetic material is prepared as the magnetic powder that grain size is less than 800 mesh
The control of granularity of magnet powder, it is in order to make organic matter and inorganic matter better that magnetic material, which is milled to 800 mesh or less,
In conjunction with advantageously forming stable compound.
Mixing：Magnetic powder is uniformly mixed with high molecular material, magnetic mixing material, the magnetic powder and high molecular material is made
Mass ratio be 1:4-5；
It is hot-forming：Magnetic mixing material is packed into mold, magnetic composite is made after carrying out hot-press solidifying, wherein hot
Cured pressure is 2-20MPa, and temperature is 80-300 DEG C.
Preferably, the magnetic material be barium ferrite, strontium ferrite, ferrocobalt, chromium ferro-cobalt, platinum cobalt alloy,
One or more mixing magnetic powders in samarium-cobalt alloy, Nd Fe B alloys.
Preferably, the high molecular material is esters of acrylic acid, silicone rubber kinds, polyurethanes or polylactic acid.
Preferably, the acrylic ester high molecular type material includes methyl methacrylate or butyl methacrylate.
Preferably, the silicone rubber kinds high molecular material includes dimethyl silicone rubber, methyl vinyl silicone rubber or methyl
Ethenylphenyl silicon rubber.
Preferably, the polyurethane class high molecular material includes polycarbonate polyurethane or polyurethanes.
Inventor additionally provides a kind of magnetic composite, and the magnetic composite is any of the above-described preparation method
It is made.
It is different from the prior art, above-mentioned technical proposal mixes magnetic powder with high molecular material, is prepared using pressure sintering magnetic
Composite material, prepared magnetic composite are soft material, can be widely applied to direct current micromotor magnet, pneumatic element
The fields such as magnet ring, automobile instrument magnet ring, decoration damping magnet.This method is easy to operate, may be advantageously employed in industrial production.
Gained magnetic composite has good magnetic property, mechanical strength and biocompatibility.
Specific implementation mode
For the technology contents of technical solution, construction feature, the objects and the effects are described in detail, below in conjunction with specific reality
Example is applied to be explained in detail.
Embodiment 1
It is prepared by magnetic powder：By ferrite melting, gets rid of band and grinds in platinum and filtered with 800 mesh screens after ball milling,
Mixing：Magnetic powder and dimethyl silicone rubber are pressed 1:4 mass ratio is mixed, and magnetic mixing material is made.
It is hot-forming：Magnetic mixing material after precuring is put into hot pressing die and carries out hot-press solidifying, hot pressing pressure
For 2MPa, temperature is 300 DEG C, and magnetic composite is made.
Embodiment 2
It is prepared by magnetic powder：By the melting of chromium ferro-cobalt, gets rid of band and grinds in platinum and filtered with 800 mesh screens after ball milling,
Mixing：Magnetic powder and polylactic acid are pressed 1:5 mass ratio is mixed, and magnetic mixing material is made.
It is hot-forming：Magnetic mixing material after precuring is put into hot pressing die and carries out hot-press solidifying, hot pressing pressure
For 20MPa, temperature is 80 DEG C, and magnetic composite is made.
Embodiment 3
It is prepared by magnetic powder：By the melting of platinum cobalt alloy, gets rid of band in flakes and grinds in platinum after ball milling with the filtering of 800 mesh screens,
Mixing：Magnetic powder and methyl methacrylate are pressed 10:45 mass ratio is mixed, and magnetic mixing material is made.
It is hot-forming：Magnetic mixing material after precuring is put into hot pressing die and carries out hot-press solidifying, hot pressing pressure
For 10MPa, temperature is 200 DEG C, and magnetic composite is made.
Embodiment 4
It is prepared by magnetic powder：By barium ferrite melting, gets rid of band and grinds in platinum and filtered with 800 mesh screens after ball milling,
Mixing：Magnetic powder and polyurethanes are pressed 10:45 mass ratio is mixed, and magnetic mixing material is made.
It is hot-forming：Magnetic mixing material after precuring is put into hot pressing die and carries out hot-press solidifying, hot pressing pressure
For 15MPa, temperature is 150 DEG C, and magnetic composite is made.
Embodiment 5
It is prepared by magnetic powder：By barium ferrite and strontium ferrite according to mass fraction 6:4 ratio is sufficiently mixed, and is used after ball milling
800 mesh screens filter,
Mixing：Magnetic powder and polyurethanes are pressed 10:45 mass ratio is mixed, and magnetic mixing material is made.
It is hot-forming：Magnetic mixing material after precuring is put into hot pressing die and carries out hot-press solidifying, hot pressing pressure
For 15MPa, temperature is 150 DEG C, and magnetic composite is made.
The magnetic composite of embodiment 1-5 is subjected to Magnetic Measurement experiment, conclusion is as follows：
| Magnetic energy product (KJm-3) | Coercivity (KAm-1) | Remanent magnetism (mT) | |
| Embodiment 1 | 3.36 | 115.2 | 85.98 |
| Embodiment 2 | 19.2 | 27.96 | 589.98 |
| Embodiment 3 | 12 | 79.98 | 120 |
| Embodiment 4 | 15.12 | 150.6 | 219.96 |
| Embodiment 5 | 15.43 | 93.6 | 236.37 |
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or terminal device including a series of elements include not only those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or end
The intrinsic element of end equipment.In the absence of more restrictions, being limited by sentence " including ... " or " including ... "
Element, it is not excluded that there is also other elements in process, method, article or the terminal device including the element.This
Outside, herein, " being more than ", " being less than ", " being more than " etc. are interpreted as not including this number；" more than ", " following ", " within " etc. understandings
It includes this number to be.
It should be noted that although the various embodiments described above have been described herein, it is not intended to limit
The scope of patent protection of the present invention.Therefore, based on the present invention innovative idea, to embodiment described herein carry out change and repair
Change or the equivalent structure or equivalent process transformation made by using the contents of the present specification, directly or indirectly by the above technology
Scheme is used in other related technical areas, is included within the scope of patent protection of the present invention.
Claims (7)
1. a kind of preparation method of magnetic composite, which is characterized in that include the following steps：
It is prepared by magnetic powder：Magnetic material is prepared as the magnetic powder that grain size is less than 800 mesh；
Mixing：Magnetic powder is uniformly mixed with high molecular material, magnetic mixing material, the matter of the magnetic powder and high molecular material is made
Amount is than being 1:4-5；
It is hot-forming：Magnetic mixing material is packed into mold, magnetic composite is made after carrying out hot-press solidifying, wherein hot pressing is solid
The pressure of change is 2-20MPa, and temperature is 80-300 DEG C.
2. preparation method according to claim 1, which is characterized in that the magnetic material be barium ferrite, strontium ferrite,
One or more mixing in ferrocobalt, chromium ferro-cobalt, platinum cobalt alloy, samarium-cobalt alloy, Nd Fe B alloys.
3. preparation method according to claim 1, which is characterized in that the high molecular material is esters of acrylic acid, silicon rubber
Glue class or polyurethanes or polylactic acid.
4. preparation method according to claim 3, which is characterized in that the acrylic ester high molecular type material includes methyl
Methyl acrylate or butyl methacrylate.
5. preparation method according to claim 3, which is characterized in that the silicone rubber kinds high molecular material includes dimethyl
Silicon rubber, methyl vinyl silicone rubber or methyl vinyl phenyl silicon rubber.
6. preparation method according to claim 3, which is characterized in that the polyurethane class high molecular material includes poly- carbonic acid
Ester type polyurethane or polyurethanes.
7. a kind of magnetic composite, which is characterized in that the magnetic composite is any preparation sides claim 1-6
Method is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810173622.2A CN108384243A (en) | 2018-03-02 | 2018-03-02 | A kind of magnetic composite and preparation method thereof |
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| CN201810173622.2A CN108384243A (en) | 2018-03-02 | 2018-03-02 | A kind of magnetic composite and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310313A (en) * | 2020-10-27 | 2021-02-02 | 武汉华星光电半导体显示技术有限公司 | Protective layer, display panel and display device |
| CN113737533A (en) * | 2021-09-08 | 2021-12-03 | 青岛大学 | Hybrid controllable magnetorheological elastomer damping element and preparation method thereof |
| CN114933800A (en) * | 2022-05-13 | 2022-08-23 | 哈尔滨理工大学 | Nano ferrite/liquid silicon rubber radar wave-absorbing composite material |
| CN116285302A (en) * | 2023-03-17 | 2023-06-23 | 山东省交通工程监理咨询有限公司 | Extension material, extension piece preparation method and pier anti-collision device |
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| JP2009161599A (en) * | 2007-12-28 | 2009-07-23 | Riken Technos Corp | Ferromagnetic thermoplastic resin composition and its use |
| CN102964774A (en) * | 2012-10-16 | 2013-03-13 | 横店集团东磁股份有限公司 | Manufacturing method of soft magnetic alloy composite material |
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| JP2009161599A (en) * | 2007-12-28 | 2009-07-23 | Riken Technos Corp | Ferromagnetic thermoplastic resin composition and its use |
| CN102964774A (en) * | 2012-10-16 | 2013-03-13 | 横店集团东磁股份有限公司 | Manufacturing method of soft magnetic alloy composite material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112310313A (en) * | 2020-10-27 | 2021-02-02 | 武汉华星光电半导体显示技术有限公司 | Protective layer, display panel and display device |
| CN113737533A (en) * | 2021-09-08 | 2021-12-03 | 青岛大学 | Hybrid controllable magnetorheological elastomer damping element and preparation method thereof |
| CN113737533B (en) * | 2021-09-08 | 2023-03-21 | 青岛大学 | Hybrid controllable magnetorheological elastomer damping element and preparation method thereof |
| CN114933800A (en) * | 2022-05-13 | 2022-08-23 | 哈尔滨理工大学 | Nano ferrite/liquid silicon rubber radar wave-absorbing composite material |
| CN116285302A (en) * | 2023-03-17 | 2023-06-23 | 山东省交通工程监理咨询有限公司 | Extension material, extension piece preparation method and pier anti-collision device |
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Application publication date: 20180810 |
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