CN110189883A - A kind of current transformer flexibility soft magnet core - Google Patents
A kind of current transformer flexibility soft magnet core Download PDFInfo
- Publication number
- CN110189883A CN110189883A CN201910485081.1A CN201910485081A CN110189883A CN 110189883 A CN110189883 A CN 110189883A CN 201910485081 A CN201910485081 A CN 201910485081A CN 110189883 A CN110189883 A CN 110189883A
- Authority
- CN
- China
- Prior art keywords
- current transformer
- magnet core
- soft magnet
- transformer flexibility
- flexibility soft
- 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
- H01F1/01—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
- H01F1/12—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 soft-magnetic materials
- H01F1/14—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 soft-magnetic materials metals or alloys
- H01F1/20—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/28—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 soft-magnetic materials metals or alloys in the form of particles, e.g. powder dispersed or suspended in a bonding agent
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- 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
- C08K2003/0812—Aluminium
-
- 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
- C08K2003/0856—Iron
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- 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
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of current transformer flexibility soft magnet core and preparation method thereof, the curing agent of the polymer of soft magnetic powder, 10-95wt%, the fire retardant of 1-5wt% and 0.5-1wt% including 5-90wt%, according to the ratio after mixing by soft magnetic powder, polymer and curing agent, it shapes, solidify, current transformer flexibility soft magnet core is made, the invention belongs to mutual inductor correlative technology fields, current transformer flexibility soft magnet core provided by the present invention, with preferable magnetic conductance, coercivity is low, and satisfactory mechanical property, good flame retardation effect；Preparation method simple process provided by the present invention and at low cost, easily operated and industrialized production.
Description
[technical field]
The invention belongs to current transformer correlative technology fields, and in particular to a kind of current transformer flexibility soft magnet core.
[background technique]
Current transformer is one kind of detector, can monitor the leakage current of distribution system, and be can be achieved at the same time to electric appliance
The monitoring and control of equipment provide solution for electric leakage monitoring, preventing electric fire.
Current transformer is made of iron core and winding, existing current transformer flexibility iron core by soft magnetic powder or
After particle compacting, then insulating layer is coated in outside and such as has certain flexibility to guarantee that iron core has certain mechanical performance,
But the mechanical performance of the iron core is poor, mutability and the insulation effect because of external insulation layer, asks there are detection accuracy is not accurate enough
Topic.
[summary of the invention]
In order to solve the above technical problems existing in the prior art, the present invention provides a kind of mutual inductor flexibility soft magnets
Core, the iron core are mainly prepared by soft magnetic powder and polymer, can be directly prepared into the flexible iron core of arbitrary shape, are not susceptible to
Deformation or structural instability, are provided simultaneously with excellent magnetic conductance and mechanical performance, and detection accuracy with higher, can visit
Minimum electric current is measured, to achieve the goals above, technical scheme is as follows:
A kind of current transformer flexibility soft magnet core, by mass percentage, soft magnetic powder, 10- including 5-90%
The curing agent of 95% polymer, the fire retardant of 1-5% and 0.5-1%.
Further, the conjunction of any one during the soft magnetic powder is iron content-nickel, iron-cobalt, iron-cobalt-nickel element combine
Gold.
Further, the soft magnetic powder is the mixed of one or more of needle-shaped, spherical, sheet, cylindrical shape
Close object.
Further, the polymer is silicon rubber, polytetrafluoroethylene (PTFE), epoxy resin, polyimides, melamino-formaldehyde
Resin, fluorubber, butyl rubber, butadiene rubber, ethylene propylene diene rubber, in acrylic rubber any one or it is two or more
Mixture.
Further, the curing agent is aliphatic amine, aromatic amine, alicyclic ring amine, polyamide-based, modified amine
One of or two or more mixture in class, acid anhydrides.
Further, the fire retardant is phosphorus flame retardant, nitrogenated flame retardant, expansion type flame retardant, inorganic hydroxide
One of or two or more mixture in fire retardant.
The invention also discloses the preparation methods of current transformer flexibility soft magnet core as described above, including walk as follows
It is rapid:
S1: mixing soft magnetic powder, polymer, fire retardant and curing agent according to the ratio, stir evenly, and forms colloid mixing
Object；
S2: the colloid admixture is shaped, that is, current transformer flexibility soft magnet core is made.
Further, mixing temperature is 25-100 DEG C in the S1.
Further, pass through the one of which in injection molded, compression molding forming, extrusion molding, calendaring molding in the S2
Mode shapes.
Compared to the prior art, the beneficial effects of the present invention are:
The present invention mixes soft magnetic powder, polymer, curing agent and fire retardant, and soft magnetic powder is scattered in polymer,
Under polymer effect, soft magnetic powder can combine closely, and form magnetic iron core after solidifying under the action of curing agent, the iron core
Have good mechanical performance, can be used directly without outsourcing insulation；Because of the effect of soft magnetic powder, which has good
Magnetic conductance, it is (minimum to may detect Naan to may detect minimum electric current lower coercivity, and have higher detection accuracy
Grade electric current), and there is good flame retardant effect.
Preparation method provided by the present invention, preparation process is simple and process conditions require it is simple, it is easily operated and can criticize
Quantization production.
[specific embodiment]
The present invention is intended to provide a kind of current transformer flexibility soft magnet core, mainly by soft magnetic powder, fire retardant and polymerization
Object is prepared, and has preferable flexible and detection accuracy high, main technical schemes are as follows:
A kind of current transformer flexibility soft magnet core, by mass percentage, soft magnetic powder, 10- including 5-90%
The curing agent of 95% polymer, the fire retardant of 1-5% and 0.5-1%.
In the program, with the increase of soft magnetic powder content, the magnetic conductivity of iron core increases, and mechanical performance reduces, therefore to protect
Demonstrate,prove iron core magnetic conductivity and mechanical performance it is optimal, preferably the mass ratio of soft magnet powder film and polymer be (3-6): 1；The soft magnetism
The alloy of any one during powder is iron content-nickel, iron-cobalt, iron-cobalt-nickel element combine, including but not limited to ferrocart core, iron silicon
Aluminium alloy, permalloy, FERRITE CORE, silicon steel sheet, amorphous and nanometer crystal alloy etc.；The soft magnetic powder be it is needle-shaped, spherical,
Sheet, it is cylindric in one of or two or more mixture, it is preferred to use the spherical mixtures with other shapes, it is spherical
It can guarantee that iron core is guaranteeing that higher magnetic flux is same with needle-shaped, sheet and columned one of or two or more mixing
When, there is lower coercivity, it is furthermore preferred that spherical soft magnetic powder partial size is 10nm-4mm, the soft magnet powder of the particle size range
End can preferably be combined with polymer, make iron core mechanical performance with higher.
The polymer includes but is not limited to silicon rubber, polytetrafluoroethylene (PTFE), epoxy resin, polyimides, melamine first
Urea formaldehyde, fluorubber, butyl rubber, butadiene rubber, ethylene propylene diene rubber, any one in acrylic rubber or two or more
Mixture.
The curing agent is aliphatic amine, in aromatic amine, alicyclic ring amine, polyamide-based, modified amine, anhydride
One of or two or more mixture, aliphatic amine such as ethylenediamine (EDA), diethylenetriamine (DETA), triethylene
Tetramine (TETA), tetraethylenepentamine (TEPA), polyethylene polyamine (PEPA), dipropylenetriamine (DPTA), dimethylamine propylamine
(DMAPA), diethyl amino propylamine (DEAPA), hexamethylene diamine (HDA), diethylamine (DEA) etc.；Aromatic amine such as m-phenylene diamine (MPD) (m-
PDA), m-xylene diamine (MXDA), diaminodiphenyl-methane (DDM) etc.；Alicyclic ring amine such as hexahydropyridine (HHP), diamino
Hexamethylene (DAHM) etc.；Anhydride acetone tetracarboxylic dianhydride (BTDA), tetrabydrophthalic anhydride (THPA), glutaric anhydride (GA)
Deng；Modified amine such as alkyl alcoholamine, epoxy amine, modified dicyandiamine, methylol diethyl triamine etc..
The fire retardant can be in phosphorus flame retardant, nitrogenated flame retardant, expansion type flame retardant, inorganic hydroxide fire retardant
At least one, phosphorus flame retardant such as phosphate, phospho hetero phenanthrene (DOPO), phosphazene compound, organic hypophosphorous acid, organic hypophosphorous acid
Salt, ammonium polyphosphate, ammonium phosphate salt, phosphate and Quadrafos etc.；Nitrogenated flame retardant such as melamine, melamine cyanurate
(MCA) etc.；Expansion type flame retardant such as melamine polyphosphate (MPP) etc.；Inorganic hydroxide fire retardant such as aluminium hydroxide, hydrogen
Magnesia etc..
The present invention also provides the preparation methods of mutual inductor flexibility soft magnet core as described above, include the following steps:
S1: mixing soft magnetic powder, polymer, fire retardant and curing agent according to the ratio, stir evenly, and forms colloid mixing
Object；
S2: the colloid admixture is shaped, that is, current transformer flexibility soft magnet core is made.
Preferably, the mixing temperature in S1 can be 25-100 DEG C；Injection molded, compression molding forming, extrusion can be passed through in S2
One of method in forming, calendaring molding shapes.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, and does not have to
It is of the invention in limiting.
Embodiment 1
A kind of current transformer flexibility soft magnet core, by the melamino-formaldehyde tree of the ferromagnetic powder of 5wt%, 90wt%
The DETA of rouge, the aluminium hydroxide of 4wt% and 1wt% is formed, and preparation method is as follows:
S1: ferromagnetic powder, aluminium hydroxide and DETA being added in melamine resin according to the ratio, stir under room temperature equal
It is even, form colloid admixture；
S2: the colloid admixture in S1 is added in extruder, shape needed for squeezing out, ambient temperature curing forming is made
Current transformer flexibility soft magnet core.
Embodiment 2
A kind of current transformer flexibility soft magnet core, by the ferrosilicon aluminium of 10wt%, the silicon rubber of 88wt%, 1%
The TETA of magnesium hydroxide and 1wt% composition, preparation method are as follows:
Ferrosilicon aluminium and TETA: being added in silicon rubber according to the ratio, be heated to 100 DEG C by S1, stirs at 100 DEG C equal
It is even, form colloid admixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out stands to be cooled, solidified forming, i.e.,
Current transformer flexibility soft magnet core is made.
Embodiment 3
A kind of current transformer flexibility soft magnet core, by the permalloy (wherein, nickel content is in 45-50%) of 30wt%,
The m-PDA of the butyl rubber of 65wt%, the phosphate of 4wt% and 1wt% is formed, and preparation method is as follows:
S1: permalloy, phosphate and m-PDA are added in ABS according to the ratio, 100 DEG C is heated to, is stirred at 100 DEG C
Uniformly, colloid admixture is formed；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out, standing is cooled to room temperature, is solidified into
Current transformer flexibility soft magnet core is made in shape.
Embodiment 4
A kind of current transformer flexibility soft magnet core, by the sendust of 50wt%, 45wt% butadiene rubber,
The ammonium polyphosphate of 4.5wt% and the DETA composition of 0.5wt%, preparation method are as follows:
S1: sendust, ammonium polyphosphate and DETA are added in butadiene rubber according to the ratio, 80 DEG C are heated to, at 80 DEG C
Under stir evenly, formed colloid admixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out, standing is cooled to room temperature, is solidified into
Current transformer flexibility soft magnet core is made in shape.
Embodiment 5
A kind of current transformer flexibility soft magnet core, by the FERRITE CORE of 70wt%, 27wt% polytetrafluoroethylene (PTFE),
The melamine of 2wt% and the EDA composition of 1wt%, preparation method are as follows:
S1: FERRITE CORE, melamine and EDA are added in polytetrafluoroethylene (PTFE) according to the ratio, stir evenly under room temperature, are formed
Colloid admixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out is stood, ambient temperature curing forming, i.e.,
Current transformer flexibility soft magnet core is made.
Embodiment 6
A kind of current transformer flexibility soft magnet core, by the sendust of 80wt%, 24wt% acrylic rubber,
The ammonium polyphosphate of 5wt% and the DETA composition of 1wt%, preparation method are as follows:
S1: sendust, ammonium polyphosphate and DETA being added in acrylic rubber according to the ratio, stir under room temperature equal
It is even, form colloid admixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out is stood, ambient temperature curing forming, i.e.,
Current transformer flexibility soft magnet core is made.
Embodiment 7
A kind of current transformer flexibility soft magnet core, by the FERRITE CORE of 90wt%, the fluorubber of 5wt%, 4.5wt%
DOPO and 0.5wt% PEPA composition, preparation method is as follows:
FERRITE CORE, DOPO and PEPA: being added in fluorubber according to the ratio, stir evenly under room temperature by S1, forms colloid
Mixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out is stood, ambient temperature curing forming, i.e.,
Current transformer flexibility soft magnet core is made.
Embodiment 8
A kind of current transformer flexibility soft magnet core, by the silicon steel sheet of 85wt%, the butyl rubber of 13wt%, 1wt%
The DETA of ammonium polyphosphate and 1wt% composition, preparation method are as follows:
S1: silicon steel sheet, ammonium polyphosphate and DETA are added in butyl rubber according to the ratio, 50 DEG C is heated to, is stirred at 50 DEG C
It mixes uniformly, forms colloid admixture；
S2: the colloid admixture in S1 is added in extruder, and shape needed for squeezing out, standing is cooled to room temperature, is solidified into
Current transformer flexibility soft magnet core is made in shape.
The magnetic conductivity of the mutual inductor flexibility soft magnet core prepared by permeability measurement instrument detection embodiment 1-8, detection knot
Fruit is as shown in table 1:
Mutual inductor flexibility soft magnet core magnetic conductivity testing result prepared by 1 embodiment 1-8 of table
It should be noted that the forming mode in S2 is not limited only to extrusion molding, compression molding forming also can be used, be molded into
The forming mode of the modes such as shape, extrusion molding, calendaring molding, existing polymer is suitable for the present invention.
To sum up, as the content of soft magnetic powder increases, on the magnetic conductivity of prepared current transformer flexibility soft magnet core
It rises, detection accuracy is higher, and when the content of soft magnetic powder is 80wt%, magnetic conductivity highest, detection accuracy highest works as soft magnetic powder
More than 80wt%, magnetic conductivity decline, detection accuracy decline, therefore embodiment 6 is the optimal embodiment of the present invention.
The above content is combine specific optimal technical scheme further detailed description of the invention, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For the professional technician of the technical field of the invention,
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (9)
1. a kind of current transformer flexibility soft magnet core, which is characterized in that by mass percentage, the soft magnet powder including 5-90%
The fire retardant of last, 10-95% polymer 1-5% and the curing agent of 0.5-1%.
2. current transformer flexibility soft magnet core according to claim 1, which is characterized in that the soft magnetic powder be containing
The alloy of any one in iron-nickel, iron-cobalt, iron-cobalt-nickel element combination.
3. current transformer flexibility soft magnet core according to claim 1, which is characterized in that the soft magnetic powder is needle
The mixture of one or more of shape, spherical, sheet, cylindrical shape.
4. current transformer flexibility soft magnet core according to claim 1, which is characterized in that the polymer is silicon rubber
Glue, polytetrafluoroethylene (PTFE), epoxy resin, polyimides, melamine resin, fluorubber, butyl rubber, butadiene rubber, three
Any one in first EP rubbers, acrylic rubber or two or more mixtures.
5. current transformer flexibility soft magnet core according to claim 1, which is characterized in that the curing agent is aliphatic
Amine, aromatic amine, alicyclic ring amine, polyamide-based, modified amine, one of or two or more mixing in acid anhydrides
Object.
6. current transformer flexibility soft magnet core according to claim 1, which is characterized in that the fire retardant is the resistance of phosphorus system
Fire agent, nitrogenated flame retardant, expansion type flame retardant, one of or two or more mixing in inorganic hydroxide fire retardant
Object.
7. the preparation method of current transformer flexibility soft magnet core as claimed in any one of claims 1 to 6, which is characterized in that packet
Include following steps:
S1: mixing soft magnetic powder, polymer, fire retardant and curing agent according to the ratio, stir evenly, and forms colloid admixture；
S2: the colloid admixture is shaped, that is, current transformer flexibility soft magnet core is made.
8. the preparation method of current transformer flexibility soft magnet core according to claim 7, which is characterized in that in the S1
Mixing temperature is 25-100 DEG C.
9. the preparation method of current transformer flexibility soft magnet core according to claim 7, which is characterized in that in the S2
It is shaped by the one of which in injection molded, compression molding forming, extrusion molding, calendaring molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485081.1A CN110189883A (en) | 2019-06-05 | 2019-06-05 | A kind of current transformer flexibility soft magnet core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485081.1A CN110189883A (en) | 2019-06-05 | 2019-06-05 | A kind of current transformer flexibility soft magnet core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110189883A true CN110189883A (en) | 2019-08-30 |
Family
ID=67720544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910485081.1A Pending CN110189883A (en) | 2019-06-05 | 2019-06-05 | A kind of current transformer flexibility soft magnet core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110189883A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111660A (en) * | 1994-03-31 | 1995-11-15 | 苏马吕株式会社 | Epoxy resin composition |
| CN101501932A (en) * | 2006-08-11 | 2009-08-05 | 三井化学株式会社 | Antenna core and antenna |
| CN106883378A (en) * | 2017-04-16 | 2017-06-23 | 西北师范大学 | The preparation and the application in epoxy resin is prepared of the organic inorganic hybridization curing agent with fire resistance |
| CN107452690A (en) * | 2016-03-31 | 2017-12-08 | Tdk株式会社 | Composite magnetic encapsulant |
| CN108003568A (en) * | 2017-12-13 | 2018-05-08 | 江西伟普科技有限公司 | A kind of preparation method with the injection molding adhesion composite material for absorbing radio frequency electromagnetic |
| CN108886881A (en) * | 2016-03-25 | 2018-11-23 | 迪睿合电子材料有限公司 | Electro-magnetic wave absorption thermally conductive sheet, the manufacturing method of electro-magnetic wave absorption thermally conductive sheet and semiconductor device |
-
2019
- 2019-06-05 CN CN201910485081.1A patent/CN110189883A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111660A (en) * | 1994-03-31 | 1995-11-15 | 苏马吕株式会社 | Epoxy resin composition |
| CN101501932A (en) * | 2006-08-11 | 2009-08-05 | 三井化学株式会社 | Antenna core and antenna |
| CN108886881A (en) * | 2016-03-25 | 2018-11-23 | 迪睿合电子材料有限公司 | Electro-magnetic wave absorption thermally conductive sheet, the manufacturing method of electro-magnetic wave absorption thermally conductive sheet and semiconductor device |
| CN107452690A (en) * | 2016-03-31 | 2017-12-08 | Tdk株式会社 | Composite magnetic encapsulant |
| CN106883378A (en) * | 2017-04-16 | 2017-06-23 | 西北师范大学 | The preparation and the application in epoxy resin is prepared of the organic inorganic hybridization curing agent with fire resistance |
| CN108003568A (en) * | 2017-12-13 | 2018-05-08 | 江西伟普科技有限公司 | A kind of preparation method with the injection molding adhesion composite material for absorbing radio frequency electromagnetic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Valstyn et al. | Ferromagnetic resonance of single-domain particles | |
| CN110211762A (en) | A kind of current transformer flexibility soft magnet core | |
| CN106349686B (en) | A kind of high-performance polyamide/samarium iron nitrogen magnetic composite and preparation method thereof | |
| CN103426584A (en) | Ferrite composite magnetic powder core and preparing method thereof | |
| CN110189883A (en) | A kind of current transformer flexibility soft magnet core | |
| CN104028751B (en) | A kind of high-insulativity insulating wrapped processing method of soft magnetic metal composite | |
| Bahri-Laleh et al. | Microwave absorption properties of polyaniline/carbonyl iron composites | |
| JP2016519430A (en) | Non-corrosive soft magnetic powder | |
| CN105916941A (en) | Polyamide imide solution, porous polyamide imide film, and methods for producing same | |
| Kuo et al. | Microwave adsorption of core–shell structured Sr (MnTi) x Fe 12− 2 x O 19/PANI composites | |
| JPWO2015012329A1 (en) | Magnetic rubber composition, magnetic rubber molded product, and magnetic encoder | |
| JP2011178416A (en) | Bundling band and method for manufacturing the same | |
| CN102903474A (en) | Injection anisotropic composite magnet and preparation method thereof | |
| CN110223824A (en) | A kind of current transformer flexibility soft magnet core | |
| JP5593127B2 (en) | Wire ring parts | |
| CN102397835B (en) | Method for performing surface treatment on neodymium-iron-boron permanent magnet material by using nano ceramic | |
| CN103500643A (en) | Method for modified silicon iron boron soft magnetic powder core with magnetic conductivity of 90 | |
| JP6780693B2 (en) | Manufacturing method of bond magnets and compounds for bond magnets | |
| JP7060807B2 (en) | Composition for bond magnet and its manufacturing method | |
| CN106366879A (en) | Methane detection warning instrument | |
| JPS59191786A (en) | Adhesive for ferrite | |
| Sun et al. | Preparation and characterization of magnetic polyimide hybrid thin films | |
| JP2001250706A (en) | Rare earth bonded magnet composite material and its manufacturing method | |
| JPH02158106A (en) | Composition for plastic magnet | |
| KR20210074806A (en) | Cured body and the manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190830 |
|
| RJ01 | Rejection of invention patent application after publication |