CN102390985B - Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof - Google Patents
Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof Download PDFInfo
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- CN102390985B CN102390985B CN 201110224945 CN201110224945A CN102390985B CN 102390985 B CN102390985 B CN 102390985B CN 201110224945 CN201110224945 CN 201110224945 CN 201110224945 A CN201110224945 A CN 201110224945A CN 102390985 B CN102390985 B CN 102390985B
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- ferrite
- teflon tape
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- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 38
- 239000004809 Teflon Substances 0.000 title claims abstract description 13
- 229920006362 Teflon® Polymers 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 18
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 14
- 239000011787 zinc oxide Substances 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000416 bismuth oxide Inorganic materials 0.000 claims abstract description 5
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims abstract description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims description 30
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical group CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 12
- 239000004902 Softening Agent Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000007766 curtain coating Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 4
- 229960004643 cupric oxide Drugs 0.000 claims description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 238000001238 wet grinding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- ZEMPKEQAKRGZGQ-AAKVHIHISA-N 2,3-bis[[(z)-12-hydroxyoctadec-9-enoyl]oxy]propyl (z)-12-hydroxyoctadec-9-enoate Chemical group CCCCCCC(O)C\C=C/CCCCCCCC(=O)OCC(OC(=O)CCCCCCC\C=C/CC(O)CCCCCC)COC(=O)CCCCCCC\C=C/CC(O)CCCCCC ZEMPKEQAKRGZGQ-AAKVHIHISA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 229910052709 silver Inorganic materials 0.000 abstract description 6
- 239000004332 silver Substances 0.000 abstract description 6
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000010345 tape casting Methods 0.000 abstract 2
- 239000005751 Copper oxide Substances 0.000 abstract 1
- 229910000431 copper oxide Inorganic materials 0.000 abstract 1
- 239000002270 dispersing agent Substances 0.000 abstract 1
- 239000004014 plasticizer Substances 0.000 abstract 1
- 239000011253 protective coating Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 8
- 238000005245 sintering Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000411 inducer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Magnetic Ceramics (AREA)
Abstract
The invention relates to a broadband and high-magnetic-permeability ferrite teflon tape and a production method thereof. The teflon tape comprises pre-burned ferrite powder and an organic tape casting system, wherein the pre-burned ferrite powder comprises ferric oxide, nickel oxide, copper oxide, zinc oxide, bismuth oxide and an additive, and the organic tape casting system comprises a solvent, a dispersant, a binder and a plasticizer. The LTCF (Low Temperature Cofired Ferrite) teflon tape prepared in the invention has a flat surface, is sintered at 900 DEG C for compactness, and a sintered body has an excellent performances: the initial permeability is not smaller than 450H/m at 100kHz, and the resistivity is not smaller than 109 ohm.cm. A chip inductor element manfauctured by using the teflon tape has high inductance and high quality factors, meanwhile, a low-temperature glass protective coating is coated in a silver paste circuit printing process of the inductor element, so that a device failure caused by Ag diffusion when the device is used is prevented. Therefore, the broadband and high-magnetic-permeability ferrite teflon tape and the production method thereof have huge application prospect.
Description
Technical field
The present invention relates to belong to the technical field of magneticsubstance, specifically a kind of wideband high-magnetic-permeability ferrite teflon tape.
Background technology
Inductance does not have hindrance function to galvanic current, and alternating current is had hindrance function.When passing through galvanic current in the inductance, only present fixing magnetic line of force, not time to time change around it; When in coil, passing through alternating current, will present the magnetic line of force of time to time change around it.This is just so that the chip inductor element can be applied to the high frequency nanohenry level inducer of mobile communication terminal etc.Chip-type laminated inductor dimensions is little, high, the short and small frivolous miniaturization that is conducive to circuit of integrated level; Magnetic circuit closed, the components and parts around can not disturbing also can not be closed on the interference of components and parts, are conducive to the high-density installation of components and parts; Integral structure, reliability is high; Thermotolerance, weldability are good; Shape is regular, is suitable for the automatization surface production is installed.For Ferrite Material, need high initial magnetoconductivity, high-curie temperature, but these two is conflicting, and the existing ferrite raw material band for chip inductor production on the market is difficult to when keeping high initial magnetoconductivity, and Curie temperature is also high.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of wideband high-magnetic-permeability ferrite teflon tape, and it is suitable for Application and preparation in the ferrite raw material band of laminated inductive, and produces laminated inductive with this kind raw material band.
For solving the problems of the technologies described above, the invention provides a kind of wideband high-magnetic-permeability ferrite teflon tape, be characterized in: the mass percent that its material component and each component account for the raw material total amount is respectively: pre-burning ferrite powder 40-72%, organic curtain coating system 28-60%.
Particularly, described pre-burning ferrite powder comprises: ferric oxide, nickel oxide, cupric oxide, zinc oxide, bismuth oxide and additive, and the molar content of each component is: Fe
2O
347-53 mol %, NiO 18-25 mol %, CuO 2-10 mol %, ZnO 6-21 mol %, Bi
2O
32-5 mol %; Described additive each component and each component account for ferric oxide, nickel oxide, cupric oxide, zinc oxide, bismuth oxide major ingredient weight percent V
2O
50-4wt%; Co
2O
30-3wt%; MnO 0-4wt%; MoO
30-1wt%.
Described organic curtain coating system comprises: solvent, dispersion agent, binding agent and softening agent; The mass percent that each component that forms described organic curtain coating system is occupied machine curtain coating system total amount is respectively: solvent 75-85%, dispersion agent 1-5%, binding agent 3-10%, softening agent 1-5%.
Further, described solvent comprises methyl ethyl ketone, ethanol and Virahol; Dispersion agent is Viscotrol C, and binding agent is polyvinyl butyral acetal, and softening agent is dibutyl phthalate; Wherein, the weight percent that each composition in the solvent accounts for the solvent total amount is respectively: methyl ethyl ketone 10-30%, ethanol 30-50%, Virahol 30-50%.
The preparation method of above-mentioned raw material band comprises the steps:
A). take by weighing respectively Fe
2O
3, NiO, CuO, ZnO, Bi
2O
3, the pre-burning of sieving of wet-milling post-drying, the ferrite powder after the pre-burning adds the wet-milling of additive secondary and obtains the pre-burning ferrite powder.
B). take by weighing above-mentioned prepared pre-burning ferrite powder by proportioning, behind adding solvent and the dispersion agent ball milling 3-6h, add binding agent and softening agent ball milling 3-6h, flow casting molding after froth in vacuum obtains the wideband high-magnetic-permeability ferrite teflon tape after the drying.
Utilize the preparation method of above-mentioned manufacturing chip inductance element from low-temperature cofired ferrite raw material belt, comprise the steps:
A). according to the structure design of chip inductor, accurate positional punch on the ferrite raw material band that makes.
B). adopt silk screen print method, will fill up the silver slurry in the through hole.According to the circuit layout requirement, printed silver slurry conductor fig causes the Ag diffusion for fear of excess Temperature in the device use procedure simultaneously on raw material band, republishes a layer low temperature glass supercoat at silver slurry patterned surface, prevents that the Ag diffusion from causing component failure.
C). with the raw material band that the prints number of plies and the order by in advance design, put into successively tight lamination mould, wait static pressure to form a complete multilager base plate base substrate.
D). the base substrate that will wait static pressure to process according to design requirement is divided into specific fritter.
E). the specific fritter after will cutting is put into stove, is warming up to 450 ℃ of insulation 3h binder removals with 2 ℃/min, is raised to 900 ℃ of insulation 3h with 2.5 ℃/min from 450 ℃ again and carries out sintering.Control 10h is down to 250 ℃ in the temperature-fall period, then with the stove naturally cooling.
F). after the electronic component behind the sintering brushed silver-colored end-blocking and make electrode, just make laminated inductive element of the present invention.
The present invention carves ring, is warming up to 450 ℃ of insulation 3h binder removals with 2 ℃/min prepared raw material band, is raised to 900 ℃ of insulation 3h with 2.5 ℃/min from 450 ℃ again and carries out sintering.Control 10h is down to 250 ℃ in the temperature-fall period, then with the stove naturally cooling, the sintered compact performance is tested.And the chip inductor element of making carried out performance test.
The technique effect that the present invention has:
(1) ferrite raw material band of the present invention has the performance of following excellence: high initial magnetoconductivity, high quality factor, high-curie temperature.The chip inductor element made from above-mentioned raw material band has high inductance and quality factor, has applied the low temperature glass supercoat simultaneously in the printed silver slurry circuitry processes of inductance element, has prevented the component failure that the in use diffusion of Ag of device causes.
(2) the raw material band surfacing of the present invention's preparation, smooth, individual layer standard thickness 65-75 μ m; The sintering temperature of raw material band is low, about 900 ℃;
(3) percent of firing shrinkage 15-18%(X, Y-axis), the 15-18%(Z axle), can and Au, the low melting point metals such as Ag wirings is burnt altogether, as shown in Figure 1;
(4) raw material band has excellent magnetic performance: magnetic permeability (100kHZ) height 〉=450H/m, resistivity 〉=10
9Ω cm;
(5) raw material band sintered compact crystal grain tiny, be evenly distributed, void content is low, compact structure, as shown in Figure 2.
Description of drawings
For content of the present invention is more likely to be clearly understood, below the specific embodiment and by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
SEM figure is burnt in Fig. 1 raw material band of the present invention and silver electrode wiring altogether;
Fig. 2 low temperature co-baking NiCuZn ferrite raw material band of the present invention microtexture SEM figure.
Embodiment
The present invention is described in detail below in conjunction with drawings and Examples:
Embodiment 1:
Table 1 illustrates each component content of the specific embodiment of the invention 1.Take by weighing the pre-burning ferrite powder according to table 1 prescription, behind adding solvent and the dispersion agent ball milling 3-6h, add binding agent and softening agent ball milling 3-6h, flow casting molding after froth in vacuum obtains low temperature co-fired ferrite raw material band of the present invention after the drying.
The present invention carves ring to prepared raw material band and makes the standard testing ring, is warming up to 450 ℃ of insulation 3h binder removals with 2 ℃/min, is raised to 900 ℃ of insulation 3h with 2.5 ℃/min from 450 ℃ again and carries out sintering.Control 10h is down to 250 ℃ in the temperature-fall period, then with the stove naturally cooling, the sintered compact performance is tested (such as table 2).
The content (wt%) of each component of the low temperature co-fired ferrite raw material band of table 1
The performance of the low temperature co-fired ferrite raw material band of table 2 sintered compact
Embodiment 2
Table 4 illustrates each component content of the specific embodiment of the invention 2.Take by weighing the pre-burning ferrite powder according to table 4 prescription, behind adding solvent and the dispersion agent ball milling 3-6h, add binding agent and softening agent ball milling 3-6h, flow casting molding after froth in vacuum obtains low temperature co-fired ferrite raw material band of the present invention after the drying.
The present invention carves ring, is warming up to 450 ℃ of insulation 3h binder removals with 2 ℃/min prepared raw material band, is raised to 900 ℃ of insulation 3h with 2.5 ℃/min from 450 ℃ again and carries out sintering.Control 10h is down to 250 ℃ in the temperature-fall period, then with the stove naturally cooling, the sintered compact performance is tested (such as table 5).
The content (wt%) of each component of the low temperature co-fired ferrite raw material band of table 4
The performance of the low temperature co-fired ferrite raw material band of table 5 sintered compact
Obviously, above-described embodiment only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (4)
1. wideband high-magnetic-permeability ferrite teflon tape, it is characterized in that: the mass percent that the material component that it comprises and each component account for the raw material total amount is respectively: pre-burning ferrite powder 40-72%, organic curtain coating system 28-60%;
Described pre-burning ferrite powder comprises: ferric oxide, nickel oxide, cupric oxide, zinc oxide, bismuth oxide and additive, and the molar content of each component is: Fe
2O
347-53 mol %, NiO 18-25 mol %, CuO 2-10 mol %, ZnO 6-21 mol %, Bi
2O
32-5 mol %; Described additive each component and each component account for ferric oxide, nickel oxide, cupric oxide, zinc oxide, bismuth oxide major ingredient weight percent V
2O
50-4wt%; Co
2O
30-3wt%; MnO 0-4wt%; MoO
30-1wt%;
Described organic curtain coating system comprises: solvent, dispersion agent, binding agent and softening agent;
The mass percent that each component that forms described organic curtain coating system is occupied machine curtain coating system total amount is respectively: solvent 75-85%, dispersion agent 1-5%, binding agent 3-10%, softening agent 1-5%;
Described solvent is methyl ethyl ketone, ethanol and Virahol;
The mass percent that each composition in the solvent accounts for the solvent total amount is respectively: methyl ethyl ketone 10-30%, ethanol 30-50%, Virahol 30-50%.
2. raw material band according to claim 1, it is characterized in that: described dispersion agent is Viscotrol C, binding agent is polyvinyl butyral acetal.
3. raw material band according to claim 1, it is characterized in that: described softening agent is dibutyl phthalate.
4. one of according to claim 1-3 the production method of described raw material band is characterized in that comprising the steps:
A). take by weighing respectively Fe
2O
3, NiO, CuO, ZnO, Bi
2O
3, the pre-burning of sieving of wet-milling post-drying, the ferrite powder after the pre-burning adds the wet-milling of additive secondary and obtains the pre-burning ferrite powder;
B). take by weighing above-mentioned prepared pre-burning ferrite powder, behind adding solvent and the dispersion agent ball milling 3-6h, add binding agent and softening agent ball milling 3-6h, flow casting molding after froth in vacuum obtains the wideband high-magnetic-permeability ferrite teflon tape after the drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110224945 CN102390985B (en) | 2011-08-06 | 2011-08-06 | Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110224945 CN102390985B (en) | 2011-08-06 | 2011-08-06 | Broadband and high-magnetic-permeability ferrite teflon tape and production method thereof |
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|---|---|---|---|
| CN201310087392.5A Division CN103113094B (en) | 2011-08-06 | 2011-08-06 | Broadband high-permeability ferrite raw material belt and method for manufacturing same into chip-inductor element |
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| CN102390985A CN102390985A (en) | 2012-03-28 |
| CN102390985B true CN102390985B (en) | 2013-04-10 |
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| CN103360042A (en) * | 2012-04-01 | 2013-10-23 | 比亚迪股份有限公司 | Nickel-zinc soft magnetic ferrite and preparation method thereof |
| CN103387388B (en) * | 2012-05-07 | 2015-08-26 | 深圳振华富电子有限公司 | Ferrite Material, small-sized big current lamination sheet type wideband magnetic bead and its preparation method |
| CN103515043A (en) * | 2012-06-28 | 2014-01-15 | 比亚迪股份有限公司 | Soft magnetic material and preparation method thereof |
| CN103833340B (en) * | 2012-11-27 | 2016-02-03 | 比亚迪股份有限公司 | A kind of NFC magnetic sheet slurry and NFC magnetic sheet |
| CN103265274A (en) * | 2013-05-15 | 2013-08-28 | 江粉磁材（武汉）技术研发有限公司 | Preparation method of ferrite noise suppression sheet |
| CN104250097B (en) * | 2013-06-27 | 2016-04-13 | 广东江粉磁材股份有限公司 | For the preparation of the hexad ferrite and preparation method thereof of noise suppression sheet |
| CN104250094B (en) * | 2013-06-27 | 2017-03-22 | 江粉磁材（武汉）技术研发有限公司 | Nickel copper zinc ferrite used for preparation of noise inhibition sheet and preparation method of noise inhibition sheet |
| CN103570336B (en) * | 2013-10-15 | 2015-04-01 | 江苏科技大学 | High-density LTCC (Low Temperature Co-Fired Ceramic) substrate applicable to ultrahigh frequency condition and preparation method thereof |
| CN105236948B (en) * | 2015-08-28 | 2017-08-08 | 电子科技大学 | Ka wave bands circulator NiCuZn ferrite thick-film material preparation methods |
| CN105924146B (en) * | 2016-04-25 | 2018-04-20 | 西南应用磁学研究所 | High-power multilayer sheet type ferrite device wide warm nickel zinc LTCF materials and preparation method |
| CN108892499A (en) * | 2018-06-28 | 2018-11-27 | 宁波高新区兆丰微晶新材料有限公司 | Ni-Zn-Cu series ferrite material and preparation method thereof, ferrite cemented body |
| CN109231978B (en) * | 2018-08-20 | 2020-10-27 | 浙江大学 | High-frequency high-permeability ferrite sheet and preparation method thereof |
| CN113716950B (en) * | 2021-11-01 | 2022-01-25 | 天通控股股份有限公司 | Low-temperature sintered flexible magnetic sheet and preparation method thereof |
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