CN103924113B - A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix - Google Patents
A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix Download PDFInfo
- Publication number
- CN103924113B CN103924113B CN201410104996.0A CN201410104996A CN103924113B CN 103924113 B CN103924113 B CN 103924113B CN 201410104996 A CN201410104996 A CN 201410104996A CN 103924113 B CN103924113 B CN 103924113B
- Authority
- CN
- China
- Prior art keywords
- ferrite
- foamed aluminium
- matrix
- composite wave
- suction material
- 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
Links
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix.This absorbing material by mass percentage, is made up of whipping agent 5% ~ 15%, ferrite 20% ~ 50%, aluminium powder 25% ~ 40%, aluminum oxide powder 10% ~ 25%.The invention has the advantages that: 1) whipping agent of the present invention can solve TiH
2expensive, that operational condition is harsh problem is there is as whipping agent; 2) whipping agent of the present invention regulates porosity and the pore size distribution of foamed aluminium by feed change proportioning, thus regulates the absorbing property of foamed aluminium/ferrite composite material; 3) rhombspar in the present invention, decomposable asymmetric choice net goes out a large amount of gas, and the carbon dust selected, silica flour, as conditioning agent, not only regulate the foam performance of whipping agent, and enhance the heat resistance of foamed aluminium; 4) foamed aluminium/ferrite composite material of the present invention, can meet the requirement of " thin, light, wide, strong ".
Description
Technical field
The present invention relates to a kind of composite wave-suction material, being specifically related to a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix.
Background technology
Along with computer, substation, wireless communication station and sensor new and high technology universal, absorbing material has entered the stage be widely used.In the routine work and life of people, the electromagnetic radiation that some electronic and electrical equipments universal brings and interference problem day by day serious, the problem caused by electromagenetic wave radiation pursues the concern causing the public today gradually of high-quality life people.
Absorbing material can be divided into interfere type and the large class of absorption-type two by principle of work, and wherein absorption-type absorbing material can be divided into again magnetic loss type and dielectric loss type two kinds.Magnetic loss type absorbing material principal feature has higher magnetic loss tangent angle, utilize magnetic hysteresis loss, domain wall resonance and the magnetic polarization mechanism such as natural resonance, aftereffect loss decay electromagnetic wave absorption, mainly comprise ferrite powder, carbonyl iron dust, super-fine metal powder, nano-phase material etc.Dielectric loss type absorbing material principal feature has higher electrical loss tangent angle, rely on the electronic polarization of medium, ionic polarization, molecular polarization or interfacial polarization decay electromagnetic wave absorption, mainly comprise conductive carbon black, silicon carbide, metallic staple, conducting polymer etc.
At present, for absorbing material, simple magnetic loss type or dielectric loss type can not meet the needs of practical application, and it is weak mostly to there is wave-sucking performance when being used alone these materials, inhale the deficiencies such as ripple frequency band is narrow, quality weight, non-refractory and mechanical property are poor.In order to practical requirement, on the basis of traditional absorbing material, the limitation of original material will be broken through, positive development of new wave absorbing agent, explore the composite wave absorption material integrating magnetic loss and electrical loss, and meet the requirement of electromagnetic interference material " thin, light, wide, strong ".
Variation hole is the light multifunction that the ultra-light porous metal of feature achieve structured material, and because it has lightweight, high specific strength, high-energy absorption, the features such as sound, heat, electromagnetic shielding and multi-functional compatibility thereof, are just becoming one of current study hotspot.
Foamed aluminium is a kind of new function material, and it is the similar foamed ultralight metallic substance of numerous bubbles of being scattered here and there in metallic aluminium matrix, and general porosity is 40% ~ 98%.
The foamed aluminium preparation technology of current most commercial value is foam melt method, can production large size and have the closed-cell aluminum foam of regular pore space structure.But up to the present, rarely have the report of large gauge closed-cell foam aluminum products commercial applications.Problems existing is mainly manifested in: (1) traditional technology mostly adopts TiH
2deng as whipping agent and calcium metal as tackifier, TiH
2the fast feature of class whipping agent decomposition rate makes this method operational condition harsh, and yield rate is low; (2) expensive TiH
2the use of class whipping agent and calcium metal, also further increases the manufacturing cost of closed-cell aluminum foam.Therefore, alternative TiH is developed
2the type material of class whipping agent is significant.
Patent CN102002300B discloses a kind of preparation method of foam aluminium alloy wave-absorbing material, the method comprises the surface preparation of foam aluminium alloy matrix, the preparation of antiradar coatings and spraying, wherein polyaniline is wave absorbing agent, and the rare earth element of doping further increases the absorbing property of polyaniline.Meanwhile, the vesicular structure of foamed aluminium, makes hertzian wave multiple reflections, scattering and interference, increases its power loss.
Summary of the invention
The object of the invention is to a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix.
The technical scheme realizing the object of the invention is: a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, by mass percentage, by whipping agent 5% ~ 15%, ferrite 20% ~ 50%, aluminium powder 25% ~ 40%, aluminum oxide powder 10% ~ 25%.
Whipping agent of the present invention, represents by mass percentage, is made up of rhombspar 32% ~ 52%, calcium carbonate 25% ~ 35%, calcium sulfate 5% ~ 10%, carbon dust 10% ~ 18% and silica flour 5% ~ 10%.
Ferrite of the present invention is nickel-zinc ferrite, and particle diameter is 3 ~ 5 μm.
The component of nickel-zinc ferrite of the present invention and the weight ratio of content are: Fe
2o
340 ~ 60%, NiO10 ~ 30%, ZnO20 ~ 40%, all the other are additive.
Additive of the present invention is BaO or Bi
2o
3.
Of the present invention take foamed aluminium as the ferrite composite wave-suction material of matrix, and this absorbing material is obtained by following steps:
1) batch mixing: example is by whipping agent, deionized water and dispersion agent in mass ratio, obtains powder with vibromill mixing after 0.5 ~ 3 hour;
2) sand milling: above-mentioned powder is put into sand mill, adds ferrite, aluminium powder, aluminum oxide powder simultaneously, and sand milling obtains slurry in 0.5 ~ 3 hour;
3) shaping: the slurry after above-mentioned sand milling to be carried out shapingly obtain green compact;
4) foam: after green compact drying, at 600 ~ 800 DEG C of constant temperature, insulation 5 ~ 10min, in atmosphere naturally cooling, obtain foamed aluminium/ferrite composite wave-suction material.
Further, in step 1), the mass percent of described whipping agent, deionized water and dispersion agent is 1:(10 ~ 50): (0.2 ~ 0.5).
Further, described whipping agent, represents by mass percentage, is made up of rhombspar 32% ~ 52%, calcium carbonate 25% ~ 35%, calcium sulfate 5% ~ 10%, carbon dust 10% ~ 18% and silica flour 5% ~ 10%.
Further, described dispersion agent is polyvinyl alcohol or methylcellulose gum.
Further, step 2) in, the mass percent of described ferrite, aluminium powder and aluminum oxide powder is 1:(0.5 ~ 2): (0.2 ~ 1.25), described ferrite and the mass percent of whipping agent are (2 ~ 10): 1.
Compared with prior art, the advantage had is in the present invention: 1) whipping agent of the present invention can solve TiH
2expensive, that operational condition is harsh problem is there is as whipping agent.2) whipping agent of the present invention regulates porosity and the pore size distribution of foamed aluminium by feed change proportioning, thus regulates the absorbing property of foamed aluminium/ferrite composite material.3) rhombspar in the present invention, decomposable asymmetric choice net goes out a large amount of gas, and the carbon dust selected, silica flour, as conditioning agent, not only regulate the foam performance of whipping agent, and enhance the heat resistance of foamed aluminium.4) foamed aluminium/ferrite composite material of the present invention, can meet the requirement of " thin, light, wide, strong ".
Embodiment
Below in conjunction with embodiment, the present invention is described further, but the invention is not restricted to these embodiments.
embodiment 1
1) batch mixing: take 100 grams of whipping agents (composition: rhombspar 32 grams, 35 grams, calcium carbonate, 10 grams, calcium sulfate, carbon dust 13 grams, silica flour 10 grams), 1 kilogram of deionized water and 20 grams of polyvinyl alcohol, obtain powder after mixing 0.5 hour with vibromill;
2) sand milling: above-mentioned powder is put into sand mill, adds 200 grams of nickel-zinc ferrite (composition Fe simultaneously
2o
380 grams, NiO20 gram, ZnO80 gram, BaO20 gram, particle diameter is 3 μm), 100 grams of aluminium powders, 40 grams of aluminum oxide powders, sand milling 0.5 hour slurry;
3) shaping: the slurry after above-mentioned sand milling to be carried out shapingly obtain green compact;
4) foam: after green compact drying, at 600 DEG C of constant temperature, insulation 5min, in atmosphere naturally cooling, obtain foamed aluminium/ferrite composite wave-suction material.
embodiment 2
1) batch mixing: take 100 grams of whipping agents (composition: rhombspar 52 grams, 25 grams, calcium carbonate, 5 grams, calcium sulfate, carbon dust 10 grams, silica flour 8 grams), 5 kilograms of deionized waters and 50 grams of polyvinyl alcohol, obtain powder after mixing 0.5 hour with vibromill;
2) sand milling: above-mentioned powder is put into sand mill, adds 1 kilogram of nickel-zinc ferrite (composition Fe simultaneously
2o
3600 grams, Ni100 gram, ZnO200 gram, BaO100 gram, particle diameter is 5 μm), 2 kilograms of aluminium powders, 1.25 kg of alumina powder, sand milling 3 hours slurry;
3) shaping: the slurry after above-mentioned sand milling to be carried out shapingly obtain green compact;
4) foam: after green compact drying, at 800 DEG C of constant temperature, insulation 10min, in atmosphere naturally cooling, obtain foamed aluminium/ferrite composite wave-suction material.
embodiment 3
1) batch mixing: take 100 grams of whipping agents (composition: rhombspar 40 grams, 30 grams, calcium carbonate, 6 grams, calcium sulfate, carbon dust 18 grams, silica flour 6 grams), 3 kilograms of deionized waters and 30 grams of methylcellulose gum, obtain powder after mixing 0.5 hour with vibromill;
2) sand milling: above-mentioned powder is put into sand mill, adds 500 grams of nickel-zinc ferrite (composition Fe simultaneously
2o
3225 grams, NiO150 gram, ZnO100 gram, BaO25 gram, particle diameter is 3 μm), 700 grams of aluminium powders, 300 grams of aluminum oxide powders, sand milling 2 hours slurry;
3) shaping: the slurry after above-mentioned sand milling to be carried out shapingly obtain green compact;
4) foam: after green compact drying, at 650 DEG C of constant temperature, insulation 5min, in atmosphere naturally cooling, obtain foamed aluminium/ferrite composite wave-suction material.
The present invention is not limited to above embodiment; the illustrative embodiments that embodiment 1 ~ 3 is only used to principle of the present invention is described and adopts; but for those skilled in the art; do not departing under real situation of the present invention; can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (9)
1. one kind take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: by mass percentage, be made up of whipping agent 5% ~ 15%, ferrite 20% ~ 50%, aluminium powder 25% ~ 40%, aluminum oxide powder 10% ~ 25%, described whipping agent, represent by mass percentage, be made up of rhombspar 32% ~ 52%, calcium carbonate 25% ~ 35%, calcium sulfate 5% ~ 10%, carbon dust 10% ~ 18% and silica flour 5% ~ 10%.
2. according to claim 1 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: described ferrite is nickel-zinc ferrite, particle diameter is 3 ~ 5 μm.
3. according to claim 2 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: the component of described nickel-zinc ferrite and the weight ratio of content are: Fe
2o
340 ~ 60%, NiO10 ~ 30%, ZnO20 ~ 40%, all the other are additive.
4. according to claim 3 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: described additive is BaO or Bi
2o
3.
5. according to claim 1 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: this absorbing material is obtained by following steps:
1) batch mixing: example is by whipping agent, deionized water and dispersion agent in mass ratio, obtains powder with vibromill mixing after 0.5 ~ 3 hour;
2) sand milling: above-mentioned powder is put into sand mill, adds ferrite, aluminium powder, aluminum oxide powder simultaneously, and sand milling obtains slurry in 0.5 ~ 3 hour;
3) shaping: the slurry after above-mentioned sand milling to be carried out shapingly obtain green compact;
4) foam: after green compact drying, at 600 ~ 800 DEG C of constant temperature, insulation 5 ~ 10min, in atmosphere naturally cooling, obtain foamed aluminium/ferrite composite wave-suction material.
6. according to claim 5 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: in step 1), the mass ratio of described whipping agent, deionized water and dispersion agent is 1:(10 ~ 50): (0.2 ~ 0.5).
7. according to claim 5 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: described whipping agent, represent by mass percentage, be made up of rhombspar 32% ~ 52%, calcium carbonate 25% ~ 35%, calcium sulfate 5% ~ 10%, carbon dust 10% ~ 18% and silica flour 5% ~ 10%.
8. a kind of according to claim 5 or 6 take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: described dispersion agent is polyvinyl alcohol or methylcellulose gum.
9. according to claim 5 a kind of take foamed aluminium as the ferrite composite wave-suction material of matrix, it is characterized in that: step 2) in, the mass ratio of described ferrite, aluminium powder and aluminum oxide powder is 1:(0.5 ~ 2): (0.2 ~ 1.25), described ferrite and the mass ratio of whipping agent are (2 ~ 10): 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410104996.0A CN103924113B (en) | 2014-03-21 | 2014-03-21 | A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410104996.0A CN103924113B (en) | 2014-03-21 | 2014-03-21 | A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103924113A CN103924113A (en) | 2014-07-16 |
| CN103924113B true CN103924113B (en) | 2016-02-10 |
Family
ID=51142502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410104996.0A Active CN103924113B (en) | 2014-03-21 | 2014-03-21 | A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103924113B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164582A (en) * | 2014-09-04 | 2014-11-26 | 丹阳市国美汽配有限公司 | Foaming agent for foamed aluminum materials and preparation technique thereof |
| CN104478337B (en) * | 2014-12-17 | 2016-05-11 | 南京理工大学常熟研究院有限公司 | A kind of foamed aluminium material |
| CN104478473A (en) * | 2014-12-23 | 2015-04-01 | 南京理工大学常熟研究院有限公司 | Foamed ceramic wave-absorbing material |
| CN107434371A (en) * | 2016-05-25 | 2017-12-05 | 北新集团建材股份有限公司 | A kind of mineral wool sound absorption board of anti-electromagnetic radiation and preparation method thereof |
| CN112549687B (en) * | 2020-11-19 | 2021-07-23 | 贵州航天建设工程有限公司 | Modified polyimide-based wave-absorbing material for microwave anechoic chamber, wave-absorbing structure and preparation method of wave-absorbing structure |
| CN114619724A (en) * | 2020-12-10 | 2022-06-14 | 南京航空航天大学 | High-temperature-resistant structure wave-absorbing composite material and preparation method thereof |
| CN114438364A (en) * | 2022-03-09 | 2022-05-06 | 辽宁融达新材料科技有限公司 | Preparation method of foamed aluminum wave-absorbing material and special air cooling and spraying device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713277A (en) * | 1985-07-19 | 1987-12-15 | Agency Of Industrial Science And Technology | Foamed metal and method of producing same |
| CN101259463A (en) * | 2008-04-30 | 2008-09-10 | 东北大学 | Preparation of foam aluminum alloy base wave-absorbing material |
| CN101899221A (en) * | 2010-07-02 | 2010-12-01 | 李勇 | Foaming type electromagnetic wave absorption composite material and preparation method thereof |
| CN103450845A (en) * | 2013-08-28 | 2013-12-18 | 张宇 | Preparation method of wave-absorbing material |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220846A (en) * | 1985-07-19 | 1987-01-29 | Agency Of Ind Science & Technol | Manufacture of foamed metal |
-
2014
- 2014-03-21 CN CN201410104996.0A patent/CN103924113B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713277A (en) * | 1985-07-19 | 1987-12-15 | Agency Of Industrial Science And Technology | Foamed metal and method of producing same |
| CN101259463A (en) * | 2008-04-30 | 2008-09-10 | 东北大学 | Preparation of foam aluminum alloy base wave-absorbing material |
| CN101899221A (en) * | 2010-07-02 | 2010-12-01 | 李勇 | Foaming type electromagnetic wave absorption composite material and preparation method thereof |
| CN103450845A (en) * | 2013-08-28 | 2013-12-18 | 张宇 | Preparation method of wave-absorbing material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103924113A (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103924113B (en) | A kind of take foamed aluminium as the ferrite composite wave-suction material of matrix | |
| CN103304186B (en) | Ferrite-base composite magnetic dielectric antenna substrate material and preparation method thereof | |
| CN103275591B (en) | Suction ripple powder/epoxy electromagnetism interference coated material of a kind of 0.6-18GHz frequency range and preparation method thereof | |
| CN108793965B (en) | Artificial lightweight aggregate based on ferrite wave-absorbing composite material and preparation method thereof | |
| CN103898350B (en) | The preparation method of a kind of foamed aluminium/ferrite composite wave-suction material | |
| CN104891982A (en) | Rare earth high-magnetic-permeability soft magnetic ferrite and preparation method thereof | |
| CN102426891B (en) | Graphite ceramic linear resistor and production method thereof | |
| CN111063501B (en) | Preparation method of low-loss powder for producing integrally-formed inductor | |
| CN105060874A (en) | Manganese zinc ferrite material for increasing electrical resistivity | |
| CN101481242A (en) | Regenerative preparation of manganese-zinc power ferrite waste product | |
| CN103275529B (en) | Suction ripple powder/inorganic silicate electromagnetism interference coated material of a kind of 0.6-18GHz frequency range and preparation method thereof | |
| CN105541290A (en) | Ceramic tile with electromagnetic wave absorption function and preparation method of ceramic tile | |
| CN108218240A (en) | A kind of unorganic glass base complex ferrite absorbing material and preparation method thereof | |
| CN104952573B (en) | Inorganic solid carbon resistance and its manufacture method | |
| CN103936423B (en) | A kind of silicon carbide-based microwave absorbing composite material | |
| CN107867830A (en) | Inorganic solid carbon resistance and its manufacture method | |
| CN105070454A (en) | Ferrite core material with high mechanical strength | |
| CN104129980A (en) | Low-sintering-temperature soft magnetic ferrite material and preparation method thereof | |
| CN106205939A (en) | A kind of flexible magnetic ferrite magnetic core material | |
| CN103497720B (en) | Magnetic conductive adhesive and preparation method thereof | |
| CN104478473A (en) | Foamed ceramic wave-absorbing material | |
| CN103332933A (en) | Preparation method of LaAgMnO3/Ni2Z composite wave-absorbing material | |
| CN102838346A (en) | Antenna substrate material using spinel ferrite as matrix and preparation method thereof | |
| CN106699159A (en) | Ferrite powder and preparation method and application thereof | |
| CN104891979A (en) | Wide temperature magnesium copper zinc soft magnetic ferrite magnetic core and preparation method 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191108 Address after: Magi Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province, No. 1 215500 Patentee after: Suzhou Hui Xin bang Mstar Technology Ltd Address before: 215400 Suzhou City, Taicang Province Economic Development Zone, Beijing West Road, No. 1, building 6, No. Patentee before: Suzhou Yuxi New Material Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191129 Address after: 215400 Suzhou City, Taicang Province Economic Development Zone, Beijing West Road, No. 1, building 6, No. Patentee after: Suzhou Yuxi New Material Technology Co., Ltd. Address before: Magi Road, Changshu high tech Industrial Development Zone, Suzhou City, Jiangsu Province, No. 1 215500 Patentee before: Suzhou Hui Xin bang Mstar Technology Ltd |
|
| TR01 | Transfer of patent right |