CN104671763A - Method for preparing high-frequency high-impedance ferrite material - Google Patents

Method for preparing high-frequency high-impedance ferrite material Download PDF

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CN104671763A
CN104671763A CN201310638735.2A CN201310638735A CN104671763A CN 104671763 A CN104671763 A CN 104671763A CN 201310638735 A CN201310638735 A CN 201310638735A CN 104671763 A CN104671763 A CN 104671763A
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ferrite material
high frequency
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preparation
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孙晓海
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TIANJIN HAOGAO MAGNETS CO Ltd
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TIANJIN HAOGAO MAGNETS CO Ltd
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Abstract

The invention provides a method for preparing a high-frequency high-impedance ferrite material. The high-frequency high-impedance ferrite material is prepared from the following components in parts by weight: 70-71 parts of Fe2O3, 21-22 parts of MnO, 7.5-8.5 parts of ZnO, 0.1-0.7 part of V2O5, 0.01-0.05 part of H2SiO3, 0.1-0.6 part of CaCO3 and 0.1-0.6 part of Nb2O5. The method comprises the following steps: presintering powder materials, grinding for 0.5-2 hours, spraying the powder materials by using a spraying tower when controlling the inlet temperature to be 430-510 DEG C and the outlet temperature to be 100-180 DEG C, so as to obtain a finished product material. By adopting the high-frequency high-impedance ferrite material, the consumption of the ferrite material can be reduced, the high-frequency impedance can be increased, the property of the material can be effectively improved, and the material is particularly applicable to interference isolation between elevator operation control signals and power cables; the method is simple and is particularly applicable to requirements of large-scale industrial production.

Description

A kind of preparation method of high frequency high resistance Ferrite Material
Technical field
The present invention relates to a kind of preparation method of Ferrite Material, especially a kind of preparation method of high frequency high resistance Ferrite Material.
Background technology
Ferrite Material (ferrite) is made up of the several oxide compound using ferric ion as main positive ion composition, and presents ferrimagnetism or anti-ferromagnetic material.
Ferrite Material is that one has ferromagnetic metal oxide.With regard to electrical characteristic, ferritic resistivity is more much bigger than metal, alloy magnetic material, and also has higher dielectric properties.Ferritic magnetic property has higher magnetic permeability when also showing high frequency.Thus, ferrite has become the broad-spectrum nonmetal magnetic material in high frequency light current field.Because the magnetic energy stored in ferrite unit volume is lower, full close the specific magnetising moment also lower (usually only having 1/3 ~ 1/5 of pure iron), thus limit its application in the low frequency forceful electric power required compared with high magnetic energy density and high-power field.
Ferrite Material is a kind of nonmetal magnetic material, and it prepares sintering by ferric oxide and one or more other metal oxides (such as: nickel oxide, zinc oxide, manganese oxide, magnesium oxide, barium oxide, strontium oxide etc.) to form.Its relative magnetic permeability can up to several thousand, and resistivity is 1011 times of metal, and eddy-current loss is little, are suitable for making high-frequency electromagnetic device.Ferrite has Hard Magnetic, soft magnetism, square magnetic, gyromagnet and pressure magnetic five class.Be once called as ferrite or magnetic ferrites, its production process and outer appearnce seemingly pottery, thus also referred to as ferrite.Ferrite is the composite oxides of iron and other one or more suitable metallic element, and character belongs to semi-conductor, and usually used as magnetic medium application, between ferrite magnetic material and metal or alloy magneticsubstance, most important difference is electroconductibility.Usually the former resistivity is 102 ~ 108 Ω cm, and the latter only has 10-6 ~ 10-4 Ω cm.Wherein, soft magnetic ferrite mainly contains MnZn system, NiZn system, MgZn system three major types; If press application characteristic parametric classification, power ferrite material, high frequency ferrite material, high resistivity material, very high frequency(VHF) soft magnetic ferrite (hexaplanar high frequency ferrite), high frequency high power ferrite material etc. can be divided into.
MnZn based ferrite has high initial permeability, higher saturation induction density, low loss is had at wireless intermediate frequency or low-frequency range, it is the most excellent Ferrite Material of 1 megahertz following band limits magnetic property, conventional MnZn based ferrite initial permeability μ i=400-20000, saturation induction density Bs=400-530mT.The resistivity of MgZn series ferrite material is higher, is mainly used in the deflector coil magnetic core making picture tube or typotron.
NiZn based ferrite frequency of utilization 100kHz ~ 100MHz, the highest 300MHz that uses, this kind of permeability is lower, and resistivity is very high, is generally 105 ~ 107 Ω cm.Therefore, high frequency eddy current losses is little, is the magnetic permeability μ i=5-1500 of the most excellent material of more than 1MHz high band magnetic property, conventional NiZn based material, saturation induction density Bs=250-400mT.
In recent years, along with the application of Ferrite Material is more and more extensive, Ferrite Material has been applied to the manufacture of various inducer, transformer, wave filter and reactance coil, and as hyundai electronics message areas such as computer and peripheral equipment, business automation equipment, digital communication and artificial traffic equipment, internet, household electrical appliance, electromagnetic compatibility equipment, green illumination device, industrial automations, and automobile, aviation, military field.This just has higher to the characteristic of Ferrite Material and has more requirement targetedly, in interference and insulation such as between elevator motion control signal (from programmable logic controller) and power cable, need Ferrite Material loss the smaller the better, make high-frequency resistance characteristic good.Therefore, need according to actual needs, develop the Ferrite Material with special performance that more can adapt to modern science and technology needs.
Summary of the invention
Technical problem to be solved by this invention is the preparation method providing a kind of high frequency high resistance Ferrite Material.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A preparation method for high frequency high resistance Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken by weight 2o 370-71 part, MnO21-22 part, ZnO7.5-8.5 part, V 2o 50.1-0.7 part, H 2siO 30.01-0.05 part, CaCO 30.1-0.6 part, Nb 2o 50.1-0.6 part, polyvinyl alcohol 3-10 part, dispersion agent (also known as defloculating agent) 0.1-0.5 part, defoamer 0.1-0.5 part;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970-1070 DEG C of preburning powdered material, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol, dispersion agent, defoamer, sand milling 0.5-2 hour;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, be sprayed into finished product material through spray tower.
Preferably, the preparation method of above-mentioned high frequency high resistance Ferrite Material, by its weight parts Fe in described step (1) 2o 370.7 parts, MnO21.2 part, ZnO8 part, V 2o 50.6 part, H 2siO 30.03 part, CaCO 30.3 part, Nb 2o 50.2 part.
Preferably, the preparation method of above-mentioned high frequency high resistance Ferrite Material, controls inlet temperature 460 DEG C in described step (3), temperature out 150 DEG C.
The invention has the beneficial effects as follows:
The preparation method of above-mentioned high frequency high resistance Ferrite Material, combined by the specific consumption of the improvement of formula and each component in preparation process, overcoming to have between the medium-high frequency impedance of current material production process and loss affects and the technological deficiency that cannot take into account, achieve Ferrite Material high-frequency resistance while loss is little to get a promotion, effectively improve material behavior, be particularly applicable to being applied to the interference and insulation between elevator motion control signal and power cable; Its preparation method is simple, is applicable to the needs that large-scale industrial is produced.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
Embodiment 1
A kind of high frequency high resistance Ferrite Material, by Fe 2o 3, MnO, ZnO, V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5, wherein, Fe 2o 370.7kg, MnO21.2kg, ZnO8kg, V 2o 50.6kg, H 2siO 30.03kg, CaCO 30.3kg, Nb 2o 50.2kg.
The preparation method of above-mentioned high frequency high resistance Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370.7kg, MnO21.2kg, ZnO8kg, V 2o 50.6kg, H 2siO 30.03kg, CaCO 30.3kg, Nb 2o 50.2kg, polyvinyl alcohol 5kg, dispersion agent 0.4kg, defoamer 0.4kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 1000 DEG C of preburning powdered materials, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol, dispersion agent, defoamer, sand milling 2 hours;
(3) control inlet temperature 460 DEG C, temperature out 150 DEG C, is sprayed into finished product material through spray tower.
Embodiment 2
A kind of high frequency high resistance Ferrite Material, by Fe 2o 3, MnO, ZnO, V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5, wherein, Fe 2o 371kg, MnO21kg, ZnO8.5kg, V 2o 50.7kg, H 2siO 30.01kg, CaCO 30.1kg, Nb 2o 50.6kg.
The preparation method of above-mentioned high frequency high resistance Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 371kg, MnO21kg, ZnO8.5kg, V 2o 50.7kg, H 2siO 30.01kg, CaCO 30.1kg, Nb 2o 50.6kg, polyvinyl alcohol 10kg, dispersion agent 0.1kg, defoamer 0.1kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 1070 DEG C of preburning powdered materials, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol,
Dispersion agent, defoamer, sand milling 0.5 hour;
(3) control inlet temperature 510 DEG C, temperature out 180 DEG C, is sprayed into finished product material through spray tower.
Embodiment 3
A kind of high frequency high resistance Ferrite Material, by Fe 2o 3, MnO, ZnO, V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5, wherein, Fe 2o 370kg, MnO22kg, ZnO7.5kg, V 2o 50.1kg, H 2siO 30.05kg, CaCO 30.6kg, Nb 2o 50.1kg.
The preparation method of above-mentioned high frequency high resistance Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370kg, MnO22kg, ZnO7.5kg, V 2o 50.1kg, H 2siO 30.05kg, CaCO 30.6kg, Nb 2o 50.1kg, polyvinyl alcohol 3kg, dispersion agent 0.5kg, defoamer 0.5kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970 DEG C of preburning powdered materials, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol, dispersion agent, defoamer, sand milling 1 hour;
(3) control inlet temperature 430 DEG C, temperature out 100 DEG C, is sprayed into finished product material through spray tower.
Embodiment 4
A kind of high frequency high resistance Ferrite Material, by Fe 2o 3, MnO, ZnO, V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5, wherein, Fe 2o 370-71kg, MnO21.2kg, ZnO8.2kg, V 2o 50.5kg, H 2siO 30.04kg, CaCO 30.3kg, Nb 2o 50.4kg.
The preparation method of above-mentioned high frequency high resistance Ferrite Material, concrete preparation process is as follows:
(1) Fe is taken 2o 370-71kg, MnO21.2kg, ZnO8.2kg, V 2o 50.5kg, H 2siO 30.04kg, CaCO 30.3kg, Nb 2o 50.4kg, polyvinyl alcohol 6kg, dispersion agent 0.3kg, defoamer 0.3kg;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 1000 DEG C of preburning powdered materials, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol, dispersion agent, defoamer, sand milling 1.5 hours;
(3) control inlet temperature 480 DEG C, temperature out 170 DEG C, is sprayed into finished product material through spray tower.
The described component of one of embodiment 1-4 is commercially available prod; wherein; described dispersion agent and defoamer are this area generic noun; for specific product; described dispersion agent is also known as defloculating agent, and purchased from Yuncheng Yu Chuan Chemical Co., Ltd., described defoamer is purchased from rising sun peak, Pests in Tianjin Binhai New Area Fine Chemical Works; each amounts of components increased according to same ratio or reduce, the parts by weight relation of each component of gained all belongs to protection scope of the present invention.
Performance test example:
Tested object: high frequency high resistance Ferrite Material described in embodiment 1,3,4.
With 4192A table test U80 magnetic core, L value, Q value, impedance (Ω) value.Test condition: N=15Ts
Impedance standard: 100KHz >=300 Ω, 550KHz >=1800 Ω, 600KHz >=1500 Ω, 650KHz >=1300 Ω, 7MHz >=1100 Ω 5 frequencies.
Inductance standards: L >=314 μ H(100KHz), Q value >=30
Test result is in table 1
Table 1
Above-mentioned detailed description of carrying out with reference to the preparation method of embodiment to this kind of high frequency high resistance Ferrite Material; illustrative instead of determinate; several embodiments can be listed according to institute's limited range; therefore in the change do not departed under general plotting of the present invention and amendment, should belong within protection scope of the present invention.

Claims (3)

1. a preparation method for high frequency high resistance Ferrite Material, is characterized in that: concrete preparation process is as follows:
(1) Fe is taken by weight 2o 370-71 part, MnO21-22 part, ZnO7.5-8.5 part, V 2o 50.1-0.7 part, H 2siO 30.01-0.05 part, CaCO 30.1-0.6 part, Nb 2o 50.1-0.6 part, polyvinyl alcohol 3-10 part, dispersion agent 0.1-0.5 part, defoamer 0.1-0.5 part;
(2) Fe will taken in step (1) 2o 3, after MnO, ZnO carry out batch mixing, in 970-1070 DEG C of preburning powdered material, in sand grinding process, add V 2o 5, H 2siO 3, CaCO 3and Nb 2o 5and polyvinyl alcohol, dispersion agent, defoamer, sand milling 0.5-2 hour;
(3) control inlet temperature 430-510 DEG C, temperature out 100-180 DEG C, be sprayed into finished product material through spray tower.
2. the preparation method of high frequency high resistance Ferrite Material according to claim 1, is characterized in that: by its weight parts Fe in described step (1) 2o 370.7 parts, MnO21.2 part, ZnO8 part, V 2o 50.6 part, H 2siO 30.03 part, CaCO 30.3 part, Nb 2o 50.2 part.
3. the preparation method of high frequency high resistance Ferrite Material according to claim 1, is characterized in that: control inlet temperature 460 DEG C in described step (3), temperature out 150 DEG C.
CN201310638735.2A 2013-11-29 2013-11-29 Method for preparing high-frequency high-impedance ferrite material Pending CN104671763A (en)

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Application Number Priority Date Filing Date Title
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Application publication date: 20150603