CN106169347A - Injection molded magnets material and preparation method thereof in a kind of rotor magnetic steel - Google Patents
Injection molded magnets material and preparation method thereof in a kind of rotor magnetic steel Download PDFInfo
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- CN106169347A CN106169347A CN201610668534.0A CN201610668534A CN106169347A CN 106169347 A CN106169347 A CN 106169347A CN 201610668534 A CN201610668534 A CN 201610668534A CN 106169347 A CN106169347 A CN 106169347A
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- 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
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/09—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
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- Manufacturing Cores, Coils, And Magnets (AREA)
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Abstract
The invention discloses injection molded magnets material and preparation method thereof in a kind of rotor magnetic steel, injection molded magnets material in described rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 57 69 parts, cobalt oxide 20 30 parts, manganese oxide 10 20 parts, zinc oxide 5 15 parts, zirconium oxide 10 15 parts, brium carbonate 35 parts, organic siliconresin 14 parts, polyphenylene oxide 0.2 0.8 parts;In rotor magnetic steel prepared by the present invention, injection molded magnets material has higher pcrmeability, low complex permeability, and low, high resistivity, high-curie temperature, high saturated magnetic induction are i.e. lost.
Description
Technical field
The present invention relates to a kind of field of material technology, injection molded magnets material and preparation side thereof in specifically a kind of rotor magnetic steel
Method.
Background technology
In traditional rotor magnetic steel, injection molded magnets material generally uses Magnaglo uniformly to mix with dielectric, is pressed into
Magnetic core, owing to powder is the least, is separated by non magnetic dielectric, and its resistivity ratio metal and alloy thereof are much greater, meanwhile, and magnetic
Body is internally formed distributed air gaps, and when magnetization, these distributed air gaps can store sizable ability, thus cause bigger magnetic
Damage;Therefore research and develop novel rotor magnetic steel injection molded magnets material, be the most urgent task.
Summary of the invention
It is an object of the invention to provide injection molded magnets material and preparation method thereof in a kind of rotor magnetic steel, above-mentioned to solve
The problem proposed in background technology.
For achieving the above object, the present invention provides following technical scheme:
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 57-69
Part, cobalt oxide 20-30 part, manganese oxide 10-20 part, zinc oxide 5-15 part, zirconium oxide 10-15 part, brium carbonate 3-5 part, organosilicon
Resin 1-4 part, polyphenylene oxide 0.2-0.8 part;The preparation method of described nano modification magnetic powder: first by lauric acid, tween, isopropanol
Mix and carry out vacuum filtration process and obtain mixture, then mixture is reacted with ferroferric oxide magnetic powder under microwave
I.e. obtain nano modification magnetic powder.
As the further scheme of the present invention: injection molded magnets material in described rotor magnetic steel, the most former according to weight portion
Material is: nano modification magnetic powder 59-64 part, cobalt oxide 24-27 part, manganese oxide 14-18 part, zinc oxide 8-12 part, zirconium oxide 12-14
Part, brium carbonate 3-5 part, organic siliconresin 1-4 part, polyphenylene oxide 0.2-0.8 part;The preparation method of described nano modification magnetic powder: first
First lauric acid, tween, isopropanol are mixed and carry out vacuum filtration and process and obtain mixture, then mixture is aoxidized three with four
Ferromagnetic powder carries out reacting i.e. obtaining nano modification magnetic powder under microwave.
As the further scheme of the present invention: injection molded magnets material in described rotor magnetic steel, the most former according to weight portion
Material is: nano modification magnetic powder 62 parts, cobalt oxide 26 parts, manganese oxide 17 parts, zinc oxide 11 parts, zirconium oxide 13 parts, brium carbonate 4 parts,
Organic siliconresin 3 parts, polyphenylene oxide 0.7 part;The preparation method of described nano modification magnetic powder: first by lauric acid, tween, isopropanol
Mix and carry out vacuum filtration process and obtain mixture, then mixture is reacted with ferroferric oxide magnetic powder under microwave
I.e. obtain nano modification magnetic powder.
As the further scheme of the present invention: the particle diameter of described cobalt oxide is 137 μm.
As the further scheme of the present invention: the mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 730-800 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 300-600W, and the time is 50-60 minute, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
As the further scheme of the present invention: in step (1), fusion temperature is 774 DEG C.
Compared with prior art, the invention has the beneficial effects as follows:
In rotor magnetic steel prepared by the present invention, injection molded magnets material has higher pcrmeability, low complex permeability, i.e. damages
Consume low, high resistivity, high-curie temperature, high saturated magnetic induction.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all
Belong to the scope of protection of the invention.
Embodiment 1
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 57 parts, oxygen
Change cobalt 20 parts, manganese oxide 10 parts, zinc oxide 5 parts, zirconium oxide 10 parts, brium carbonate 3 parts, organic siliconresin 1 part, polyphenylene oxide 0.2 part;
The preparation method of described nano modification magnetic powder: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration and process and obtain
Mixture, then carries out reacting i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder under microwave;Described oxygen
The particle diameter changing cobalt is 137 μm;The mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 730 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 300W, and the time is 50 minutes, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
Embodiment 2
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 59 parts, oxygen
Change cobalt 24 parts, manganese oxide 14 parts, zinc oxide 8 parts, zirconium oxide 12 parts, brium carbonate 3 parts, organic siliconresin 1 part, polyphenylene oxide 0.2 part;
The preparation method of described nano modification magnetic powder: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration and process and obtain
Mixture, then carries out reacting i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder under microwave;Described oxygen
The particle diameter changing cobalt is 137 μm;The mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 730 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 300W, and the time is 50 minutes, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
Embodiment 3
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 62 parts, oxygen
Change cobalt 26 parts, manganese oxide 17 parts, zinc oxide 11 parts, zirconium oxide 13 parts, brium carbonate 4 parts, organic siliconresin 3 parts, polyphenylene oxide 0.7
Part;The preparation method of described nano modification magnetic powder: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration process
Obtain mixture, then carry out reacting under microwave i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder;Institute
The particle diameter stating cobalt oxide is 137 μm;The mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 774 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 472W, and the time is 58.6 minutes, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
Embodiment 4
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 64 parts, oxygen
Change cobalt 27 parts, manganese oxide 18 parts, zinc oxide 12 parts, zirconium oxide 14 parts, brium carbonate 5 parts, organic siliconresin 4 parts, polyphenylene oxide 0.8
Part;The preparation method of described nano modification magnetic powder: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration process
Obtain mixture, then carry out reacting under microwave i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder;Institute
The particle diameter stating cobalt oxide is 137 μm;The mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 800 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 600W, and the time is 60 minutes, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
Embodiment 5
Injection molded magnets material in a kind of rotor magnetic steel, according to the primary raw material of weight portion be: nano modification magnetic powder 69 parts, oxygen
Change cobalt 30 parts, manganese oxide 20 parts, zinc oxide 15 parts, zirconium oxide 15 parts, brium carbonate 5 parts, organic siliconresin 4 parts, polyphenylene oxide 0.8
Part;The preparation method of described nano modification magnetic powder: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration process
Obtain mixture, then carry out reacting under microwave i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder;Institute
The particle diameter stating cobalt oxide is 137 μm;The mesh number of described manganese oxide is 800 mesh.
The preparation method of injection molded magnets material in a kind of rotor magnetic steel, concretely comprises the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in stirring
Processing 90min in device, melt subsequently, fusion temperature is 800 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process subsequently, ultrasonic
The power of oscillation treatment is 600W, and the time is 60 minutes, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (7)
1. injection molded magnets material in a rotor magnetic steel, it is characterised in that according to the primary raw material of weight portion be: nano modification magnetic
Powder 57-69 part, cobalt oxide 20-30 part, manganese oxide 10-20 part, zinc oxide 5-15 part, zirconium oxide 10-15 part, brium carbonate 3-5 part,
Organic siliconresin 1-4 part, polyphenylene oxide 0.2-0.8 part;The preparation method of described nano modification magnetic powder: first by lauric acid, tween,
Isopropanol mix and carry out vacuum filtration process obtain mixture, then mixture is entered under microwave with ferroferric oxide magnetic powder
Row reaction i.e. obtains nano modification magnetic powder.
Injection molded magnets material in rotor magnetic steel the most according to claim 1, it is characterised in that be molded in described rotor magnetic steel
Magnet material, according to the primary raw material of weight portion be: nano modification magnetic powder 59-64 part, cobalt oxide 24-27 part, manganese oxide 14-18
Part, zinc oxide 8-12 part, zirconium oxide 12-14 part, brium carbonate 3-5 part, organic siliconresin 1-4 part, polyphenylene oxide 0.2-0.8 part;Institute
State the preparation method of nano modification magnetic powder: first lauric acid, tween, isopropanol mixed and carry out vacuum filtration and process and mixed
Compound, then carries out reacting i.e. obtaining nano modification magnetic powder by mixture and ferroferric oxide magnetic powder under microwave.
Injection molded magnets material in rotor magnetic steel the most according to claim 1 and 2, it is characterised in that in described rotor magnetic steel
Injection molded magnets material, according to the primary raw material of weight portion be: nano modification magnetic powder 62 parts, cobalt oxide 26 parts, manganese oxide 17 parts, oxygen
Change 11 parts of zinc, zirconium oxide 13 parts, brium carbonate 4 parts, organic siliconresin 3 parts, polyphenylene oxide 0.7 part;The system of described nano modification magnetic powder
Preparation Method: first lauric acid, tween, isopropanol are mixed and carry out vacuum filtration and process and obtain mixture, then by mixture
Carry out reacting under microwave i.e. obtaining nano modification magnetic powder with ferroferric oxide magnetic powder.
Injection molded magnets material in rotor magnetic steel the most according to claim 3, it is characterised in that the particle diameter of described cobalt oxide is
137μm。
Injection molded magnets material in rotor magnetic steel the most according to claim 3, it is characterised in that the mesh number of described manganese oxide is
800 mesh.
6. the preparation method of injection molded magnets material in the rotor magnetic steel as described in claim 1-5 is arbitrary, it is characterised in that
Concretely comprise the following steps:
(1) first, nano modification magnetic powder puts into cobalt oxide, manganese oxide, zinc oxide, zirconium oxide, brium carbonate, in agitator
Processing 90min, melt subsequently, fusion temperature is 730-800 DEG C, obtains melting solid;
(2) then, melting solid is mixed homogeneously with organic siliconresin, polyphenylene oxide, carry out sonic oscillation process, sonic oscillation subsequently
The power processed is 300-600W, and the time is 50-60 minute, obtains mixture I;
(3) last, mixture I is carried out oven drying at low temperature pelletize, obtains injection molded magnets material in rotor magnetic steel.
The preparation method of injection molded magnets material in rotor magnetic steel the most according to claim 6, it is characterised in that step (1)
Middle fusion temperature is 774 DEG C.
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050167632A1 (en) * | 2004-01-30 | 2005-08-04 | Tdk Corporation | Method for producing Mn-Zn ferrite |
CN1889203A (en) * | 2006-06-30 | 2007-01-03 | 上海师范大学 | Magnetic sorting material and producing method and application thereof |
CN102992747A (en) * | 2012-11-23 | 2013-03-27 | 天长市昭田磁电科技有限公司 | Preparation method of MnZn (Manganese-Zinc) soft magnetic ferrite material containing modified nano argil |
CN105047347A (en) * | 2015-07-24 | 2015-11-11 | 天长市中德电子有限公司 | Mn-Zn ferrite material for high-performance electronic component and preparation method |
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- 2016-08-11 CN CN201610668534.0A patent/CN106169347A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050167632A1 (en) * | 2004-01-30 | 2005-08-04 | Tdk Corporation | Method for producing Mn-Zn ferrite |
CN1889203A (en) * | 2006-06-30 | 2007-01-03 | 上海师范大学 | Magnetic sorting material and producing method and application thereof |
CN102992747A (en) * | 2012-11-23 | 2013-03-27 | 天长市昭田磁电科技有限公司 | Preparation method of MnZn (Manganese-Zinc) soft magnetic ferrite material containing modified nano argil |
CN105047347A (en) * | 2015-07-24 | 2015-11-11 | 天长市中德电子有限公司 | Mn-Zn ferrite material for high-performance electronic component and preparation method |
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