CN104647819B - Magnetic-isolating material and flexible treatment method thereof - Google Patents

Magnetic-isolating material and flexible treatment method thereof Download PDF

Info

Publication number
CN104647819B
CN104647819B CN201410853516.0A CN201410853516A CN104647819B CN 104647819 B CN104647819 B CN 104647819B CN 201410853516 A CN201410853516 A CN 201410853516A CN 104647819 B CN104647819 B CN 104647819B
Authority
CN
China
Prior art keywords
ferrite
raw cook
raised line
triangle section
section raised
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.)
Active
Application number
CN201410853516.0A
Other languages
Chinese (zh)
Other versions
CN104647819A (en
Inventor
於扬栋
王媛珍
郝斌
包宇航
单震
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hengdian Group DMEGC Magnetics Co Ltd
Original Assignee
Hengdian Group DMEGC Magnetics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hengdian Group DMEGC Magnetics Co Ltd filed Critical Hengdian Group DMEGC Magnetics Co Ltd
Priority to CN201410853516.0A priority Critical patent/CN104647819B/en
Publication of CN104647819A publication Critical patent/CN104647819A/en
Application granted granted Critical
Publication of CN104647819B publication Critical patent/CN104647819B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites

Abstract

The invention discloses a magnetic-isolating material and a flexible treatment method thereof. The magnetic-isolating material comprises a ferrite sintered sheet and protective films on two side surfaces of the ferrite sintered sheet, wherein the protective films are adhered to the ferrite sintered sheet; the ferrite sintered sheet is sintered by ferrite raw sheets; different flexible treatment methods are selected according to the ferrite raw sheets with different thicknesses; when the ferrite raw sheets are 0.14-1.2mm thick, treatment is carried out by virtue of a round roller knife mold; grooves are efficiently formed in the surfaces of the ferrite raw sheets; and when the ferrite raw sheets are 0.04-0.14mm, flexible treatment of the magnetic-isolating material is sequentially reached by adopting a direct sintering method. The flexible treatment method has the beneficial effects that when the ferrite raw sheets are treated by virtue of the round roller knife mold, the grooves in the surfaces of the ferrite raw sheets are consistent in depth; and the method has the characteristic of high efficiency; the work efficiency can be effectively improved by adopting the direct sintering method when the flexibility of the magnetic-isolating material is ensured; the labor intensity is alleviated; and the final magnetic-isolating material can have a good bending effect by different methods.

Description

A kind of NULL and its handling flexibly method
Technical field
The present invention relates to magnetic material manufactures correlative technology field, refer in particular to a kind of NULL and its handling flexibly side Method.
Background technology
In recent years, with the popularization of smart mobile phone, near-field communication NFC (Near Field Communication) technology exists It is applied in mobile phone.But when NFC antenna is arranged near circuit board of mobile phone or battery, metal material is in the electromagnetic field of alternation Effect is lower to produce vortex phenomenon, and signal strength signal intensity will weaken significantly, is easily caused reading process insensitive.In order to solve above-mentioned asking Topic, arranges one piece of NULL between NFC antenna and battery of mobile phone, by improving NULL itself magnetic conductivity, will read and write The electromagnetic signal that device sends gathers in NULL and is transmitted, and meanwhile, NULL has relatively low loss it is ensured that electromagnetism Signal passes through rear less decay or undamped, thus realizing improving communication distance or the sensitivity with read-write.
In NULL preparation process, first have to prepare the molding procedure of ferrite raw cook, then by the iron of forming Oxysome raw cook is fired into ferrite sintered.In order that ferrite sintered after firing has good flexibility, China is specially Sharp (publication number：CN 101262085A) disclose in the ferrite raw cook one side many grooves of direction segmentation in length and breadth, and entered Row is fired, and ferrite raw cook reforms into ferrite sintered, and then in ferrite sintered one side bonding diaphragm, another side glues Close two-sided tape, then it is rolled through rubber stick, thus, wrapped ferrite sintered splits into perhaps along groove specification How independent fritter, is configured to the NULL bending.In above-mentioned Chinese patent (publication number：CN 101262085A) in the greatest extent Pipe describes and arranges V-type groove in ferrite raw cook side, but with regard to how between ferrite raw cook side setting many waits Away from groove be not described in, that is, in that patent describe only cutting V-type groove, do not illustrate how expeditiously to exist The many grooves at equal intervals of ferrite raw cook side setting, how also do not introduce guarantees the uniformity of cut-in groove depth.
Another Chinese patent (publication number：CN 102731100 A) disclose one side in length and breadth two in ferrite raw cook Direction arranges many discontinuous grooves, and the groove in direction is mutually non-cross in length and breadth, and ferrite side is divided into many corners Place still be connected sub-box, after these ferrite raw cooks are fired, paste upper protective film in its side and support, finally so that The ferrite sintered groove along dotted line shape ruptures completely, ferrite is fired piece and is divided into multiple independent blockages, to realize Fragility ferrite is fired piece and can be bent.But in this patent (publication number：CN 102731100 A) in disclose and adopt plane Cutter is punched (or push away cut) to ferrite sheet side and goes out discontinuous groove.This punching is to cut ferrite by point of a knife moment Inside raw cook, it is correspondingly formed V-shaped groove on ferrite raw cook surface, greater impact power can be subject at the moment point of a knife of punching press, sternly Ghost image rings cutter life, and it is improper particularly to control when debugging press depth, and cutter punching press is too deep easily to damage point of a knife, leads Whole cutting die is caused to scrap.
Meanwhile, in above-mentioned two patent (publication numbers：CN 101262085A, CN 102731100 A) in disclose preparation Continuous groove, or discontinuous groove, for the ferrite raw cook in the range of 0.05～0.14mm, will be punched in its side For the groove of its thickness certain proportion depth, the required precision to pressing equipment is very high, is generally difficult to ensure punching depth phase Deng, arise that the groove of punching press is deep mixed, and ferrite raw cook itself be very thin, fired after ferrite sintered easily Prolong deeper groove cracking, ferrite sintered broken serious.
Content of the invention
The present invention is above-mentioned in order to overcome the shortcomings of to exist in prior art, there is provided a kind of high efficiency arranges depth of groove Consistent NULL and its handling flexibly method.
To achieve these goals, the present invention employs the following technical solutions：
A kind of NULL, including the diaphragm of ferrite sintered and ferrite sintered two sides, described guarantor Cuticula is mutually bonded with ferrite sintered, fires for ferrite raw cook for described ferrite sintered and forms.
By the design of ferrite sintered both sides surface protective film so that ferrite sintered ensures flexibility after broken While it is ensured that after broken material uniformity.
Preferably, the side surface protective film of described ferrite sintered is PET protection film, described ferrite sintered Another side diaphragm is two-sided tape, and described two-sided tape is made up of layers of two-sided and release layer.
As another kind preferably, the both sides surface protective film of described ferrite sintered is two-sided tape, and described is two-sided Adhesive tape is made up of layers of two-sided and release layer.
For above-mentioned NULL, present invention also offers a kind of handling flexibly method of NULL, concrete operations step Suddenly as follows：
(1) first the auxiliary agents such as nickel copper zinc ferrite powder, organic solvent, binding agent, plasticizer are uniformly mixed by a certain percentage Synthesis slip, slip is uniformly coated on PET basement membrane through casting apparatus, can get after the epilamellar slip of PET is dried Ferrite raw cook；
(2) the ferrite raw cook after flow casting molding is carried out Thickness sensitivity, when ferrite raw cook thickness is 0.14～1.2mm When, enter in step (3)；When ferrite raw cook thickness is 0.04～0.14mm, enter in step (4)；
(3) rolled by round roller cutting die in ferrite raw cook side, in ferrite raw cook one side two sides in length and breadth To the groove rolling out dotted line shape；
(4) ready ferrite raw cook is fired, after ferrite raw cook is fired, reforms into ferrite sintered；
(5) in the one side bonding PET protection film or two-sided tape of ferrite sintered, another at ferrite sintered One side bonds two-sided tape；
(6) assembly of above-mentioned ferrite sintered is rolled through rubber steel rod, form the NULL that can bend.
Wherein：The process that slip is prepared into ferrite raw cook is referred to as flow casting molding, in step (2), when ferrite life When piece thickness is 0.14～1.2mm, its preferred thickness is 0.16～0.8mm, enters in step (3)；When ferrite raw cook is thick When spending for 0.04～0.14mm, its preferred thickness is 0.05～0.12mm, enters in step (4).The method makes to be cast into Ferrite raw cook after type, according to the difference of thickness, selects different handling flexibly methods, when its thickness is 0.14～1.2mm, Efficiently prepare groove on ferrite raw cook surface, so as to final NULL handling flexibly；When ferrite raw cook thickness is During 0.04～0.14mm, ferrite raw cook itself is very thin, if arranging groove in ferrite sheet raw cook, due to ferrite life Piece produces contraction in sintering procedure, namely is firing stage ferrite raw cook periphery to central reduction, and the stretching of groove is strong Degree reduces, and is easily caused and ruptures along groove when ferrite raw cook is fired, and yields reduces, so selecting directly to NULL Handling flexibly；So it is designed to effectively prepare high performance NULL.
Preferably, described round roller cutting die is cylindric, a diameter of 50～200mm of described round roller cutting die, described circle Roller cutting die surface axial direction spaced set multiple triangle section raised line, described round roller cutting die surface radial direction spaced set multiple with The consistent triangle section raised line of axial triangle section raised line, described axial triangle section raised line is convex with the triangle section of axial direction Bar is orthogonal, and the height of described triangle section raised line is 1～2mm, and the corner angle of described triangle section raised line is 20～40 Degree, the spacing of described two neighboring triangle section raised line is 1～5mm, and the described triangle section raised line axially arranging is arranged with radially The triangle section raised line of row disconnects in infall and forms breach, described breach be spaced apart the 1/ of two triangle section raised lines interval 10～1/2, the triangle section raised line of described axially arrangement constitutes dotted line shape, and the triangle section raised line of described arranged radially constitutes void The circular arc of wire.After firing ferrite sintered is relatively thick due to thickness, and when rolling through rubber stick, ferrite sintered not Fragile be cleaved into fritter so that final NULL flexibility is not good, so select round roller cutting die structure design right to meet The handling flexibly of NULL.
Preferably, a diameter of 80～120mm of described round roller cutting die, the height of described triangle section raised line is 1.2 ～1.5mm, the corner angle of described triangle section raised line is 25～35 degree, the spacing of described two neighboring triangle section raised line For 2～4mm, described breach be spaced apart the 1/5～1/3 of two triangle section raised lines intervals.For improve production efficiency it should Choose the relatively large round roller cutting die of diameter, but the round roller cutting die cost of the making major diameter considering can improve, so on selecting State size as preferred size；When two neighboring triangle section raised line spacing becomes big, during rolling, corresponding v-depression spacing also can Increase, follow-up ferrite is fired the alienable block sizes of piece and also can be increased, and leads to the flexibility of NULL just to reduce, therefore And select above-mentioned size as preferred size；When the gap of indentation, there is excessive, after firing ferrite sintered after rolling not Easily split along groove, lead to the flexibility of NULL not good, so selecting above-mentioned size as preferred size.
Preferably, in step (3), round roller cutting die carries out longitudinal and transverse two sides on the surface of ferrite raw cook side To during rolling, ferrite raw cook surface is the formation of v-depression corresponding with triangle section raised line, the depth of described v-depression For the 1/10～1/2 of ferrite raw cook thickness, thus forming discrete V in the longitudinal and transverse two directions of ferrite raw cook surface Connected in star.
Preferably, the depth of described v-depression is the 1/8～1/3 of ferrite raw cook thickness.
Preferably, in step (4), ready ferrite raw cook is carried out at a temperature of 850 DEG C～1100 DEG C Fire, temperature retention time is 1～5 hour.
Preferably, described firing temperature is 900 DEG C～1000 DEG C, temperature retention time is 1.5～3 hours.
The invention has the beneficial effects as follows：Different handling flexibly methods are selected according to the ferrite raw cook of different-thickness, So that the depth of groove on ferrite raw cook surface is consistent when being processed using round roller cutting die, and there is efficient feature； Using direct method for cooking, while ensureing that NULL is flexible, can effectively improve operating efficiency, reduce work strong Degree；Final NULL is enabled to using different methods there is good bending effect.
Brief description
Fig. 1 is the structural representation of round roller cutting die；
Fig. 2 is the partial enlargement structural representation of round roller cutting die in Fig. 1；
Fig. 3 is the ferrite green sheet structure schematic diagram after being rolled using round roller cutting die；
In figure：1. round roller cutting die, 2. triangle section raised line, 3. breach, 4.V connected in star.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
Embodiment 1：
First by nickel copper zinc ferrite powder, solvent (ethanol and toluene or ethanol and dimethylbenzene two end number mixing), binding agent Other auxiliary agents such as (polyvinyl butyral resin (PVB)), plasticizer (dibutyl phthalate (DBP)) carry out ball according to a certain ratio Mill is mixed into slip, and slip is dried at 40 DEG C after flow casting molding, and preparing thickness is 0.152mm ferrite raw cook, as Fig. 1 institute Show, using the round roller cutting die 1 of a diameter of 85mm, as shown in Fig. 2 two neighboring triangle section raised line 2 spacing is 2.5mm, triangle The height of section raised line is 1.2mm, and the corner angle of described triangle section raised line is 25 degree, triangle section raised line 2 cross part The breach 3 of position is 0.5mm, and ferrite raw cook one side is rolled, as shown in figure 3, forming depth on ferrite sheet surface V-depression 4 for 0.03mm, v-depression 4 depth is detected by microscope.By ready ferrite raw cook through 950 DEG C It is fired, temperature retention time is 2 hours, obtains intact ferrite of firing and fires piece, ferrite fires piece one side bonding PET Diaphragm or two-sided tape, another side bonds two-sided tape, then steel rod rolling through a diameter of 6mm, ferrite by it Fire piece and be divided into the little square piece of polylith along v-depression 4 rule, constitute the NULL with good flexibility.Finally every magnetic material Material tests complex permeability through Agilent 4991A impedance instrument, when frequency is for 13.56MHz, the complex permeability μ ' that records= 141.5, μ "=2.36.
Embodiment 2：
Preparing thickness using the same method of example 1 is 0.724mm ferrite raw cook, using the round roller knife of a diameter of 105mm Mould 1, two neighboring triangle section raised line 2 spacing is 3.6mm, and the height of triangle section raised line is 1.5mm, described triangle section The corner angle of raised line is 35 degree, and triangle section raised line 2 crossover sites breach 3 is 1mm, and ferrite raw cook one side is rolled Pressure, forms, on ferrite sheet surface, the v-depression 4 that depth is 0.23mm, ready ferrite raw cook is burnt through 965 DEG C System, obtains intact ferrite of firing and fires piece, and ferrite fires piece one side bonding PET protection film or two-sided tape, separately One side bonds two-sided tape, then steel rod rolling through a diameter of 6mm by it, and ferrite fires piece along v-depression 4 rule point It is slit into the little square piece of polylith, constitute the NULL with good flexibility.Test plural magnetic conductance through Agilent 4991A impedance instrument Rate, when frequency is for 13.56MHz, complex permeability μ '=135.5 that record, μ "=2.82.
Embodiment 3：
The ferrite raw cook that thickness is 0.072mm is prepared using the same method of example 1, is formed after directly firing through 945 DEG C Ferrite fires piece, then fires piece one side bonding PET protection film or two-sided tape in ferrite, and another side bonding is two-sided Adhesive tape, then, steel rod rolling through a diameter of 6mm, ferrite fire piece random be broken into many fragments so that final every Magnetic material has good bending effect, tests complex permeability through Agilent 4991A impedance instrument, when frequency is 13.56MHz When, complex permeability μ '=138.4 recording, μ "=1.86.
Embodiment 4：
The ferrite raw cook that thickness is 0.124mm is prepared using the same method of example 1, is formed after directly firing through 955 DEG C Ferrite fires piece, then fires piece one side bonding PET protection film or two-sided tape in ferrite, and another side bonding is two-sided Adhesive tape, then, steel rod rolling through a diameter of 6mm, ferrite fires that piece is random to be broken into many fragments, and PET protection film is no Breakage, the NULL bending effect obtaining is good.Test complex permeability through Agilent 4991A impedance instrument, when frequency is During 13.56MHz, complex permeability μ '=145.4 that record, μ "=2.83.
Comparative example 1：
Choose the ferrite raw cook equal with embodiment 1 thickness, except triangle section raised line crossover sites breach is 1mm Outward, other implementation processes are same as Example 1, and after the steel rod through 6mm for the final NULL rolls, it is random that ferrite fires piece Broken, disrepair phenomenon in PET protection film, and salient point and cut in the release layer surface of two-sided tape.
Comparative example 2：
Choose the ferrite raw cook that thickness is 0.124mm, using with embodiment 1 identical round roller cutting die 1, in ferrite sheet Surface forms the v-depression 4 that depth is 0.02mm, ready ferrite raw cook is fired through 950 DEG C, fires rear iron oxygen Body is fired piece and is occurred ftractureing along v-depression 4.

Claims (6)

1. a kind of handling flexibly method of NULL, described NULL includes ferrite sintered and ferrite sintered The diaphragm of piece two sides, described diaphragm is mutually bonded with ferrite sintered, and described ferrite sintered is iron oxygen Body raw cook is fired and is formed, and the side surface protective film of described ferrite sintered is PET protection film, described ferrite sintered another Side surface protective film is two-sided tape, and described two-sided tape is made up of layers of two-sided and release layer, described ferrite sintered Both sides surface protective film be two-sided tape, described two-sided tape is made up of layers of two-sided and release layer, it is characterized in that, specifically Operating procedure is as follows：
(1) first nickel-zinc ferrite powder, organic solvent, binding agent, plasticizer are uniformly mixed into slip, slip by a certain percentage It is uniformly coated on PET basement membrane through casting apparatus, after the epilamellar slip of PET is dried, can get ferrite raw cook；
(2) the ferrite raw cook after flow casting molding is carried out Thickness sensitivity, when ferrite raw cook thickness is 0.14～1.2mm, Enter in step (3)；When ferrite raw cook thickness is 0.04～0.14mm, enter in step (4)；
(3) rolled by round roller cutting die (1) in ferrite raw cook side, in ferrite raw cook one side both direction in length and breadth Roll out the groove of dotted line shape；Wherein：Described round roller cutting die (1) be cylindric, described round roller cutting die (1) a diameter of 50～ 200mm, described round roller cutting die (1) surface axial direction spaced set multiple triangle section raised line (2), described round roller cutting die (1) table Face diameter to the triangle section raised line (2) that spaced set is multiple and axial triangle section raised line (2) is consistent, described axial three Angular cross section raised line (2) is orthogonal with the triangle section raised line (2) of axial direction, and the height of described triangle section raised line (2) is 1～2mm, The corner angle of described triangle section raised line (2) is 20～40 degree, and the spacing of described two neighboring triangle section raised line (2) is 1～5mm, the described axially triangle section raised line (2) of arrangement disconnects shape with the triangle section raised line (2) of arranged radially in infall Become breach (3), be spaced apart that two triangle section raised lines (2) are spaced the 1/10～1/2 of described breach (3), described axially arrange Triangle section raised line (2) constitute dotted line shape, the triangle section raised line (2) of described arranged radially constitutes the circular arc of dotted line shape；
(4) ready ferrite raw cook is fired, after ferrite raw cook is fired, reforms into ferrite sintered；
(5) in one side bonding PET protection film or the two-sided tape of ferrite sintered, in the opposite side of ferrite sintered Face bonds two-sided tape；
(6) assembly of above-mentioned ferrite sintered is rolled through rubber steel rod, form the NULL that can bend.
2. a kind of handling flexibly method of NULL according to claim 1, is characterized in that, described round roller cutting die (1) A diameter of 80～120mm, the height of described triangle section raised line (2) is 1.2～1.5mm, described triangle section raised line (2) corner angle is 25～35 degree, and the spacing of described two neighboring triangle section raised line (2) is 2～4mm, described breach (3) Be spaced apart that two triangle section raised lines (2) are spaced 1/5～1/3.
3. a kind of handling flexibly method of NULL according to claim 1 and 2, is characterized in that, in step (3), When round roller cutting die (1) carries out longitudinal and transverse two directions rolling on the surface of ferrite raw cook side, ferrite raw cook surface is with regard to shape Become v-depression (4) corresponding with triangle section raised line (2), the depth of described v-depression (4) is ferrite raw cook thickness 1/10～1/2, thus forming discrete v-depression (4) in the longitudinal and transverse two directions of ferrite raw cook surface.
4. a kind of handling flexibly method of NULL according to claim 3, is characterized in that, described v-depression (4) Depth is the 1/8～1/3 of ferrite raw cook thickness.
5. a kind of handling flexibly method of NULL according to claim 1, is characterized in that, in step (4), by standard The ferrite raw cook got ready is fired at a temperature of 850 DEG C～1100 DEG C, and temperature retention time is 1～5 hour.
6. a kind of handling flexibly method of NULL according to claim 5, is characterized in that, described firing temperature is 900 DEG C～1000 DEG C, temperature retention time is 1.5～3 hours.
CN201410853516.0A 2014-12-31 2014-12-31 Magnetic-isolating material and flexible treatment method thereof Active CN104647819B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410853516.0A CN104647819B (en) 2014-12-31 2014-12-31 Magnetic-isolating material and flexible treatment method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410853516.0A CN104647819B (en) 2014-12-31 2014-12-31 Magnetic-isolating material and flexible treatment method thereof

Publications (2)

Publication Number Publication Date
CN104647819A CN104647819A (en) 2015-05-27
CN104647819B true CN104647819B (en) 2017-02-22

Family

ID=53239677

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410853516.0A Active CN104647819B (en) 2014-12-31 2014-12-31 Magnetic-isolating material and flexible treatment method thereof

Country Status (1)

Country Link
CN (1) CN104647819B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108141994B (en) * 2015-09-30 2020-02-07 阿莫善斯有限公司 Magnetic field shielding unit, module including the same, and portable device including the same
CN105206413A (en) * 2015-10-14 2015-12-30 无锡斯贝尔磁性材料有限公司 Efficient flexible magnetic sheet machining technology
JP6723252B2 (en) * 2016-03-31 2020-07-15 日本ケミコン株式会社 Method for manufacturing electrode foil and method for manufacturing wound capacitor
CN107043250B (en) * 2017-04-01 2018-09-07 沅陵辰州磁电高科有限公司 A kind of nickel-zinc ferrite sheet material and its coating technique
CN109545496B (en) * 2018-12-18 2020-07-28 横店集团东磁股份有限公司 Ferrite sheet with thickness of more than 200 mu m, and preparation method and application thereof
CN112643225A (en) * 2020-12-28 2021-04-13 江苏荣鼎安防产品制造有限公司 Edge pressing forming process for door leaf of fireproof door without welding points
CN114227949B (en) * 2021-11-30 2024-03-15 西安空间无线电技术研究所 Physical cutting method of magnetic substrate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757217A (en) * 2011-04-29 2012-10-31 深圳振华富电子有限公司 Water-base tape casting slurry and water-base tape casting wet method for preparing multilayer chip component
CN203521092U (en) * 2013-09-12 2014-04-02 深圳市金瑞中核电子有限公司 Flexible ferrite magnetism isolating piece

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102757217A (en) * 2011-04-29 2012-10-31 深圳振华富电子有限公司 Water-base tape casting slurry and water-base tape casting wet method for preparing multilayer chip component
CN203521092U (en) * 2013-09-12 2014-04-02 深圳市金瑞中核电子有限公司 Flexible ferrite magnetism isolating piece

Also Published As

Publication number Publication date
CN104647819A (en) 2015-05-27

Similar Documents

Publication Publication Date Title
CN104647819B (en) Magnetic-isolating material and flexible treatment method thereof
US9640304B2 (en) Ceramic laminate sheet with flexibility and preparation method thereof
JP5889251B2 (en) Flexible ceramic laminated sheet and method for producing the same
CN102731100A (en) Composite ferrite sheet, method of fabricating the composite ferrite sheet, and array of sintered ferrite segments used to form the composite ferrite sheet
CN101262085A (en) Molded ferrite sheet, sintered ferrite substrate and antenna module
JPWO2014069440A1 (en) Ferrite sintered plate and ferrite sintered sheet
TW201423778A (en) Ferrite green sheet, sintered ferrite sheet, ferrite composite sheet comprising the same, and conductive loop antenna module
US10714247B2 (en) Ferrite sintered plate and ferrite sintered sheet
CN105047394A (en) Processing method of samarium cobalt magnetic steel
WO2013149574A1 (en) Nickel-zinc soft ferrite and method of producing the same
CN104844186A (en) Preparation method of flexible sintered ferrite films
TW201621932A (en) Soft-magnetic flat powder and process for producing same
CN103887053A (en) Method for manufacturing multi-layer inductor
CN105118653A (en) Manufacturing method for amorphous alloy core used for motor and transformer
CN109133904A (en) A kind of ferrite sintered, preparation method and the usage
KR101259080B1 (en) Ferrite Sheet Assembly and Method for making the same
CN103680893B (en) Laminated chip inductor and manufacture method thereof
CN104177077B (en) A kind of NFC Magnetic Substrate aqueous casting slurry and preparation method thereof and a kind of NFC Magnetic Substrate
CN109133902A (en) A kind of NFC ferrite sheet and its sintering method
CN204228497U (en) A kind of fixed clamp device being applicable to the multiple metallographic specimen of manual grinding and polishing
CN110993310B (en) Amorphous nanocrystalline magnetic sheet preparation process and preparation equipment
TW201429051A (en) Hole-drilled sintered ferrite sheet, antenna isolator, and antenna module
KR101536307B1 (en) Sintered sheet and preparation method thereof
CN105206413A (en) Efficient flexible magnetic sheet machining technology
KR101656822B1 (en) Extruded molding apparatus for preparing ceramic sheet, ceramic sheet, and method for the preparation 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
C14 Grant of patent or utility model
GR01 Patent grant