CN109694244A - A kind of jamproof ferrite core material and preparation method thereof - Google Patents

A kind of jamproof ferrite core material and preparation method thereof Download PDF

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Publication number
CN109694244A
CN109694244A CN201811473681.8A CN201811473681A CN109694244A CN 109694244 A CN109694244 A CN 109694244A CN 201811473681 A CN201811473681 A CN 201811473681A CN 109694244 A CN109694244 A CN 109694244A
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parts
minutes
mixture
ferrite core
oxide
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徐杰
周福林
张文军
曾性儒
王玉志
张宗仁
徐尔明
董文龙
陶天亮
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TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECHNOLOGY Co Ltd
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TIANCHANG CITY ZHAOTIAN MAGNETOELECTRICITY TECHNOLOGY Co Ltd
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Priority to CN201811473681.8A priority Critical patent/CN109694244A/en
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Abstract

The present invention relates to a kind of jamproof ferrite core materials and preparation method thereof, are made of the raw material of following parts by weight: 65-75 parts of di-iron trioxide, 30-34 parts of manganese oxide, 19-23 parts of zinc oxide, 8-13 parts of lithia, 4-6 parts of antimony oxide, 7-11 parts of silane coupling agent, 4-8 parts of organic siliconresin, 40-60 parts of policapram resin, 13-18 parts of polyvinyl alcohol, 4-6 parts of rosin glycerides, 1-2 parts of nitrogen coated graphite, 3-4 parts of graphene oxide, 0.5-0.8 parts of emergy, 3-5 parts of silica solution, 1-2 parts of ammonium dichromate and 100 parts of water；Core material prepared by the present invention has excellent electromagnetism interference characteristic, and easy to process, product stability is good, is hardly damaged, and long service life is worthy to be popularized.

Description

A kind of jamproof ferrite core material and preparation method thereof
Technical field
The present invention relates to a kind of jamproof ferrite core materials and preparation method thereof, belong to ferrite core material system Standby field.
Background technique
With the communication technology and the digitized development of electronic product, FERRITE CORE has obtained extensive utilization, thus right Soft magnetic ferrite and element are put forward new requirements, and existing electronics industry requires the FERRITE CORE of production that must have low magnetic Core loss and high magnetic permeability optimize the performance of FERRITE CORE to effectively improve the practicability of FERRITE CORE, reduce iron oxygen Body magnetic core in use caused by be lost, extend the service life of FERRITE CORE.But with the miniaturization of electronic product, Lightening development, to have higher requirement to production FERRITE CORE.However as the miniaturization of magnet, to ferrite magnetic The requirement of core is also higher, and the FERRITE CORE insulation impedance produced on existing market is low, mechanical strength is low, interference free performance is poor, Therefore, the interference free performance for how quickly and effectively improving FERRITE CORE becomes numerous producers problem to be solved.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, provides a kind of jamproof ferrite core material and its system Preparation Method, to solve problems of the prior art.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of jamproof ferrite core material is made of the raw material of following parts by weight: 65-75 parts of di-iron trioxide, 30-34 parts of manganese oxide, 8-13 parts of lithia, 4-6 parts of antimony oxide, 7-11 parts of silane coupling agent, has 19-23 parts of zinc oxide 4-8 parts of machine silicone resin, 40-60 parts of policapram resin, 13-18 parts of polyvinyl alcohol, 4-6 parts of rosin glycerides, nitrogen coated graphite 1-2 parts, 3-4 parts of graphene oxide, 0.5-0.8 parts of emergy, 3-5 parts of silica solution, 1-2 parts of ammonium dichromate and 100 parts of water.
As an improvement of the present invention, the silane coupling agent is silane coupling agent kh570.
As an improvement of the present invention, steps are as follows for the preparation method: (1) according to formula weigh di-iron trioxide, Manganese oxide, zinc oxide, lithia, antimony oxide, silane coupling agent, organic siliconresin, policapram resin, polyvinyl alcohol, Rosin glycerides, nitrogen coated graphite, graphene oxide, emergy, silica solution, ammonium dichromate and water；
(2) nitrogen coated graphite, graphene oxide mixed, dried, and the mixture after drying is put into grinder It is ground；
(3) by di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide mixing and ball milling 1-2 hours；
(4) silane coupling agent, rosin glycerides, emergy are mixed, is warming up to 50-55 DEG C, be added silica solution, and After 90-97 revs/min is dispersed with stirring 15-20 minutes, the mixture after step (3) reaction is added, and carry out at 62-65 DEG C Stirring 40-50 minutes；
(5) mixture that step (4) generate is fed through in drying box, and is dried 40-50 minutes under 100-110 °C, heated up It to 210-220 °C, and dries 7-10 minutes, is then cooled to room temperature；
(6) policapram resin, polyvinyl alcohol, water are mixed, and is stirred at 55-68 DEG C 15-25 minutes, is added The mixture generated by step (5) and organic is added in ammonium dichromate, and being dispersed with stirring at 250-350 revs/min 7-10 minutes Silicone resin, and after being dispersed with stirring 60-70 minutes at 650-750 revs/min, is added the mixture generated by step (2), and It is after being stirred 55-60 minutes at 62-70 DEG C, mixture is 20-40 minutes dry at 100-120 DEG C；
(7) particle prepared by step (6) is put into vacuum tank, and is placed 10-20 minutes under -0.8 atmospheric pressure, after take Out, it dries, is put into mold, is sintered after being pressed into green body, be tempered, can be obtained after standing 30-50 minutes.
As an improvement of the present invention, secondary drying is carried out to mixture in the step (2): first by mixture 120- It is dried 10-20 minutes under 130 °C, is warming up under 180-190 °C and dries 9-13 points.
As an improvement of the present invention, the temperature being sintered in the step (7) is 1050-1100 DEG C.
As an improvement of the present invention, the temperature being tempered in the step (7) is under 600-650 °C, and tempering time is 2-2.5 hour.
Due to using the above technology, the present invention compared with the prior art, is had the advantage that as follows:
The invention discloses a kind of jamproof ferrite core material and preparation method thereof, ferrite core materials of the invention With magnetic energy product height, the features such as magnetic stability, mechanical performance is strong, increases density, reduces the volume of ferrite core material simultaneously And resistivity with higher, high saturated magnetic induction and magnetic conductivity, it is possible to reduce eddy-current loss and the use for improving material The function of frequency improves the caking property between enhancing particle, reduces briquetting pressure, electromagnetism interference effect is good, system of the present invention Standby core material has excellent electromagnetism interference characteristic, and easy to process, product stability is good, is hardly damaged, service life It is long, it is worthy to be popularized.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1:
A kind of jamproof ferrite core material is made of the raw material of following parts by weight: 65 parts of di-iron trioxide, oxidation 34 parts of manganese, 19 parts of zinc oxide, 13 parts of lithia, 4 parts of antimony oxide, 11 parts of silane coupling agent, 4 parts of organic siliconresin, poly- second 60 parts of amide resin, 13 parts of polyvinyl alcohol, 6 parts of rosin glycerides, 1 part of nitrogen coated graphite, 4 parts of graphene oxide, emergy 0.5 Part, 5 parts of silica solution, 1 part of ammonium dichromate and 100 parts of water.
The silane coupling agent is silane coupling agent kh570.
A kind of jamproof ferrite core material, steps are as follows for the preparation method: (1) weighing three oxidations according to formula Two iron, manganese oxide, zinc oxide, lithia, antimony oxide, silane coupling agent, organic siliconresin, policapram resin, poly- second Enol, rosin glycerides, nitrogen coated graphite, graphene oxide, emergy, silica solution, ammonium dichromate and water；
(2) nitrogen coated graphite, graphene oxide mixed, dried, and the mixture after drying is put into grinder It is ground；
(3) by di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide mixing and ball milling 2 hours；
(4) silane coupling agent, rosin glycerides, emergy are mixed, are warming up to 50 DEG C, be added silica solution, and 97 turns/ Divide after being dispersed with stirring 15 minutes, the mixture after step (3) reaction is added, and be stirred at 65 DEG C 40 minutes；
(5) mixture that step (4) generate is fed through in drying box, and is dried 40 minutes under 110 °C, be warming up to 220 °C, And dry 7 minutes, it is then cooled to room temperature；
(6) policapram resin, polyvinyl alcohol, water are mixed, and is stirred at 68 DEG C 15 minutes, dichromic acid is added Ammonium, and be dispersed with stirring 7 minutes at 350 revs/min, it is added and passes through mixture and organic siliconresin that step (5) generate, and 750 revs/min are dispersed with stirring after sixty minutes, the mixture generated by step (2) are added, and be stirred at 70 DEG C 55 minutes Afterwards, mixture is 20 minutes dry at 120 DEG C；
(7) particle prepared by step (6) is put into vacuum tank, and is placed 20 minutes under -0.8 atmospheric pressure, it is rear to take out, Drying, is put into mold, is sintered after being pressed into green body, is tempered, can be obtained after standing 30 minutes.
Secondary drying is carried out to mixture in the step (2): will first dry 10 minutes, be warming up under 130 °C of mixture 9 points are dried under 190 °C.
The temperature being sintered in the step (7) is 1100 DEG C.
The temperature being tempered in the step (7) is under 600 °C, and tempering time is 2.5 hours.
According to ferrite core material prepared by specific embodiment, it is tested for the property, it is as a result as follows: saturation flux Density (T): 0.95, magnetic loss (W/Kg): 60, coercivity (A/m): 17, Curie temperature (°C): 170, working frequency (MHz): 0.20。
Embodiment 2:
A kind of jamproof ferrite core material is made of the raw material of following parts by weight: 75 parts of di-iron trioxide, oxidation 30 parts of manganese, 23 parts of zinc oxide, 8 parts of lithia, 6 parts of antimony oxide, 7 parts of silane coupling agent, 8 parts of organic siliconresin, poly- acetyl 40 parts of polyimide resin, 18 parts of polyvinyl alcohol, 4 parts of rosin glycerides, 2 parts of nitrogen coated graphite, 3 parts of graphene oxide, emergy 0.8 Part, 3 parts of silica solution, 2 parts of ammonium dichromate and 100 parts of water.
The silane coupling agent is silane coupling agent kh570.
A kind of jamproof ferrite core material, steps are as follows for the preparation method: (1) weighing three oxidations according to formula Two iron, manganese oxide, zinc oxide, lithia, antimony oxide, silane coupling agent, organic siliconresin, policapram resin, poly- second Enol, rosin glycerides, nitrogen coated graphite, graphene oxide, emergy, silica solution, ammonium dichromate and water；
(2) nitrogen coated graphite, graphene oxide mixed, dried, and the mixture after drying is put into grinder It is ground；
(3) by di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide mixing and ball milling 1 hour；
(4) silane coupling agent, rosin glycerides, emergy are mixed, are warming up to 55 DEG C, be added silica solution, and 90 turns/ Divide the mixture for being dispersed with stirring and being added after step (3) reaction after twenty minutes, and is stirred at 62 DEG C 50 minutes；
(5) mixture that step (4) generate is fed through in drying box, and is dried 50 minutes under 100 °C, be warming up to 210 °C, And dry 10 minutes, it is then cooled to room temperature；
(6) policapram resin, polyvinyl alcohol, water are mixed, and is stirred at 55 DEG C 25 minutes, dichromic acid is added Ammonium, and be dispersed with stirring 10 minutes at 250 revs/min, it is added and passes through mixture and organic siliconresin that step (5) generate, and After 650 revs/min are dispersed with stirring 70 minutes, the mixture generated by step (2) is added, and be stirred at 62 DEG C 60 minutes Afterwards, mixture is 40 minutes dry at 100 DEG C；
(7) particle prepared by step (6) is put into vacuum tank, and is placed 10 minutes under -0.8 atmospheric pressure, it is rear to take out, Drying, is put into mold, is sintered after being pressed into green body, is tempered, can be obtained after standing 50 minutes.
Secondary drying is carried out to mixture in the step (2): will first dry 20 minutes, be warming up under 120 °C of mixture 13 points are dried under 180 °C.
The temperature being sintered in the step (7) is 1050 DEG C.
The temperature being tempered in the step (7) is under 650 °C, and tempering time is 2 hours.
According to ferrite core material prepared by specific embodiment, it is tested for the property, it is as a result as follows: saturation flux Density (T): 0.95, magnetic loss (W/Kg): 62, coercivity (A/m): 18, Curie temperature (°C): 173, working frequency (MHz): 0.20。
Embodiment 3:
A kind of jamproof ferrite core material is made of the raw material of following parts by weight: 70 parts of di-iron trioxide, oxidation 32 parts of manganese, 20 parts of zinc oxide, 10 parts of lithia, 5 parts of antimony oxide, 7 parts of silane coupling agent, 8 parts of organic siliconresin, poly- acetyl 55 parts of polyimide resin, 16 parts of polyvinyl alcohol, 4 parts of rosin glycerides, 2 parts of nitrogen coated graphite, 3 parts of graphene oxide, emergy 0.8 Part, 3 parts of silica solution, 2 parts of ammonium dichromate and 100 parts of water.
The silane coupling agent is silane coupling agent kh570.
A kind of jamproof ferrite core material, steps are as follows for the preparation method: (1) weighing three oxidations according to formula Two iron, manganese oxide, zinc oxide, lithia, antimony oxide, silane coupling agent, organic siliconresin, policapram resin, poly- second Enol, rosin glycerides, nitrogen coated graphite, graphene oxide, emergy, silica solution, ammonium dichromate and water；
(2) nitrogen coated graphite, graphene oxide mixed, dried, and the mixture after drying is put into grinder It is ground；
(3) by di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide mixing and ball milling 1 hour；
(4) silane coupling agent, rosin glycerides, emergy are mixed, is warming up to 50-55 DEG C, silica solution is added, and 96 After rev/min being dispersed with stirring 18 minutes, the mixture after reacting by step (3) is added, and be stirred at 62 DEG C 50 minutes；
(5) mixture that step (4) generate is fed through in drying box, and is dried 50 minutes under 100 °C, be warming up to 210 °C, And dry 10 minutes, it is then cooled to room temperature；
(6) policapram resin, polyvinyl alcohol, water are mixed, and is stirred at 60 DEG C 20 minutes, dichromic acid is added Ammonium, and be dispersed with stirring 10 minutes at 250 revs/min, it is added and passes through mixture and organic siliconresin that step (5) generate, and After 650 revs/min are dispersed with stirring 70 minutes, the mixture generated by step (2) is added, and be stirred at 62 DEG C 60 minutes Afterwards, mixture is 40 minutes dry at 100 DEG C；
(7) particle prepared by step (6) is put into vacuum tank, and is placed 10 minutes under -0.8 atmospheric pressure, it is rear to take out, Drying, is put into mold, is sintered after being pressed into green body, is tempered, can be obtained after standing 50 minutes.
Secondary drying is carried out to mixture in the step (2): will first dry 20 minutes, be warming up under 120 °C of mixture 13 points are dried under 180 °C.
The temperature being sintered in the step (7) is 1050 DEG C.
The temperature being tempered in the step (7) is under 600 °C, and tempering time is 2.5 hours.
According to ferrite core material prepared by specific embodiment, it is tested for the property, it is as a result as follows: saturation flux Density (T): 0.93, magnetic loss (W/Kg): 61, coercivity (A/m): 16, Curie temperature (°C): 171, working frequency (MHz): 0.20。
Above-described embodiment is only the preferred technical solution of the present invention, and is not construed as limitation of the invention, the present invention Protection scope should with claim record technical solution, including claim record technical solution in technical characteristic etc. It is protection scope with alternative, i.e., equivalent replacement within this range is improved, also within protection scope of the present invention.

Claims (6)

1. a kind of jamproof ferrite core material, which is characterized in that be made of the raw material of following parts by weight: three oxidations It is two 65-75 parts of iron, 30-34 parts of manganese oxide, 19-23 parts of zinc oxide, 8-13 parts of lithia, 4-6 parts of antimony oxide, silane coupled 7-11 parts of agent, 4-8 parts of organic siliconresin, 40-60 parts of policapram resin, 13-18 parts of polyvinyl alcohol, 4-6 parts of rosin glycerides, 1-2 parts of nitrogen coated graphite, 3-4 parts of graphene oxide, 0.5-0.8 parts of emergy, 3-5 parts of silica solution, 1-2 parts of ammonium dichromate and 100 parts of water.
2. a kind of jamproof ferrite core material according to claim 1, it is characterised in that: the silane coupling agent For silane coupling agent kh570.
3. a kind of jamproof ferrite core material according to claim 1, which is characterized in that the preparation method step It is rapid as follows: (1) according to formula weigh di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide, silane coupling agent, Organic siliconresin, policapram resin, polyvinyl alcohol, rosin glycerides, nitrogen coated graphite, graphene oxide, emergy, silicon are molten Glue, ammonium dichromate and water；
(2) nitrogen coated graphite, graphene oxide mixed, dried, and the mixture after drying is put into grinder It is ground；
(3) by di-iron trioxide, manganese oxide, zinc oxide, lithia, antimony oxide mixing and ball milling 1-2 hours；
(4) silane coupling agent, rosin glycerides, emergy are mixed, is warming up to 50-55 DEG C, be added silica solution, and After 90-97 revs/min is dispersed with stirring 15-20 minutes, the mixture after step (3) reaction is added, and carry out at 62-65 DEG C Stirring 40-50 minutes；
(5) mixture that step (4) generate is fed through in drying box, and is dried 40-50 minutes under 100-110 °C, heated up It to 210-220 °C, and dries 7-10 minutes, is then cooled to room temperature；
(6) policapram resin, polyvinyl alcohol, water are mixed, and is stirred at 55-68 DEG C 15-25 minutes, is added The mixture generated by step (5) and organic is added in ammonium dichromate, and being dispersed with stirring at 250-350 revs/min 7-10 minutes Silicone resin, and after being dispersed with stirring 60-70 minutes at 650-750 revs/min, is added the mixture generated by step (2), and It is after being stirred 55-60 minutes at 62-70 DEG C, mixture is 20-40 minutes dry at 100-120 DEG C；
(7) particle prepared by step (6) is put into vacuum tank, and is placed 10-20 minutes under -0.8 atmospheric pressure, after take Out, it dries, is put into mold, is sintered after being pressed into green body, be tempered, can be obtained after standing 30-50 minutes.
4. a kind of jamproof ferrite core material according to claim 3, it is characterised in that: in the step (2) Secondary drying is carried out to mixture: will first be dried 10-20 minutes under 120-130 °C of mixture, be warming up under 180-190 °C and dry 9-13 points.
5. a kind of jamproof ferrite core material according to claim 3, it is characterised in that: in the step (7) The temperature of sintering is 1050-1100 DEG C.
6. a kind of jamproof ferrite core material according to claim 3, it is characterised in that: in the step (7) The temperature of tempering is under 600-650 °C, and tempering time is 2-2.5 hours.
CN201811473681.8A 2018-12-04 2018-12-04 A kind of jamproof ferrite core material and preparation method thereof Pending CN109694244A (en)

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CN111863426A (en) * 2020-08-06 2020-10-30 东莞市华芯联科技有限公司 Coating material of silicon rubber magnetic core and coating method thereof
CN117430373A (en) * 2023-12-21 2024-01-23 朗峰新材料启东有限公司 Anti-interference nanocrystalline composite magnetic core material and preparation method thereof

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CN104557000A (en) * 2015-01-15 2015-04-29 安徽龙磁科技股份有限公司 Anti-interference ferrite magnetic core material
CN105976968A (en) * 2016-03-16 2016-09-28 天长市昭田磁电科技有限公司 Anti-interference ferrite magnetic core material
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CN101811860A (en) * 2010-03-30 2010-08-25 杭州电子科技大学 Preparation method of porous anti-interference ferrite
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CN111863426A (en) * 2020-08-06 2020-10-30 东莞市华芯联科技有限公司 Coating material of silicon rubber magnetic core and coating method thereof
CN117430373A (en) * 2023-12-21 2024-01-23 朗峰新材料启东有限公司 Anti-interference nanocrystalline composite magnetic core material and preparation method thereof
CN117430373B (en) * 2023-12-21 2024-02-23 朗峰新材料启东有限公司 Anti-interference nanocrystalline composite magnetic core material and preparation method thereof

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Application publication date: 20190430