CN101386721B - Putty with electromagnetic wave absorption function - Google Patents
Putty with electromagnetic wave absorption function Download PDFInfo
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- CN101386721B CN101386721B CN2008102252247A CN200810225224A CN101386721B CN 101386721 B CN101386721 B CN 101386721B CN 2008102252247 A CN2008102252247 A CN 2008102252247A CN 200810225224 A CN200810225224 A CN 200810225224A CN 101386721 B CN101386721 B CN 101386721B
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Abstract
The invention discloses putty with the function of absorbing electromagnetic wave and belongs to the field of building material. The putty in each 100 mass portions contains 10 to 50 mass portions of a wave absorbing agent; the wave absorbing agent is one or a combination of nanometer Fe-graphite composite powder, manganese-zinc ferrite powder, manganese dioxide powder and acetylene black powder.The reflectivity of the putty to the electromagnetic wave of between 8 and 18 GHz is less than 5 dB below zero; and the putty can effectively absorb energy to attenuate the energy of reflected wave. When the putty is used as an inner wall coating material, the putty can effectively absorb the electromagnetic wave produced by indoor electrical appliances and the like and remove the influence of the electromagnetic wave on personnel; when the putty is applied to the outer wall, the putty can obstruct and absorb the electromagnetic radiation of a television, a mobile phone and other signal towers, protect personnel in a building from being suffered from the electromagnetic radiation, can also directly absorb the electromagnetic wave and avoid that the reflected electromagnetic wave causes harm to the personnel outside the building.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of ability and absorb electromagnetic functional putty.
Background technology
Improving constantly of Along with people's standard of living, the continuous quickening of rhythm of life, our daily life for ease, various device TV, computer, electricrefrigerator, microwave oven, television relaying tower, mobile phone signal cell site have come into our life.They not only offer convenience to us, have also brought the injury to health to us.Research shows that hertzian wave that electronics gives off influences cardiovascular systems and the immunity of human body, metabolic function, and people's vision system is had detrimentally affect.Eyes are relatively more responsive to hertzian wave, and too high electromagnetic radiation meeting causes visual deterioration, cataract.
New problem has proposed new requirement to us, and traditional common building materials can not satisfy people's demand, and research has the new direction that the health environment-friendly materials with function becomes the material of construction development.The anti electromagnetic wave material of construction is the optimal selection that a kind of people of protection avoid electromagenetic wave radiation.Electromagnetic protection for building can be carried out through two kinds of methods, and a kind of is shielding electromagnetic waves, reduces wave source and by the electromagenetic wave radiation amount between the protective, reflection of electromagnetic wave is gone back through screen, plays the effect of protection; A kind of in addition is exactly absorption of electromagnetic wave, is to change into the energy of other form to electromagnetic wave energy through absorbate, dissipates electromagnetic energy, to being played a protective role by protective.
Patented claim 200410040170.9 discloses a kind of cement-base composite material with electro-magnetic screen function, the complex body that it is made up of Electromagnetically shielding cement screed, electromagnetic shielding building putties layer and electromagnetic shielding trade sales coating layer.The Electromagnetically shielding cement material is an elementary material with Ni-Zn ferrite powder, graphite, carbonyl iron dust and short carbon fiber, adds in the sand-cement slurry forming to; The electromagnetic shielding building putties is filler with the talcum powder, adds the elementary material that is made by Ni-Zn ferrite powder, graphite, carbonyl iron dust etc. in right amount and forms; The electromagnetic shielding trade sales coating is raw material with carbonyl iron dust, metallic nickel, copper bronze, titanate coupling agent, acrylate resin, and it is mixed to be aided with color stuffing and auxiliary agent.The Electromagnetically shielding cement based composites that these three kinds of compound uses of material obtain is used for coming reflection electromagnetic wave as screen; Electromagenetic wave radiation pollutes and the leakage of inside and outside electromagnetic signal thereby reduce; Healthy and helpful to indoor human body, also can be used for the protection of important department electromagnetic information.
200410040170.9 patented claim is a shielding electromagnetic waves a solution is provided, yet this solution has protected indoor occupant to avoid radiation effect, however the reflection hertzian wave do not eliminate, still maybe the environment outside the screen be polluted.In built-up urban architecture, if can dissipate electromagnetic energy based on absorption of electromagnetic wave mechanism, convert it into the energy of other form, then not only indoor occupant is played a protective role, also can prevent electromagnetic secondary pollution.At present there is not this type of to have the putty of electromagnetic wave absorption function as yet.
Summary of the invention
The purpose of this invention is to provide a kind of putty with electromagnetic wave absorption function.
A kind of tool absorbs the putty of hertzian wave function; In the said putty of per 100 mass parts; The wave absorbing agent that contains 10-50 mass parts, said wave absorbing agent are a kind of or wherein several kinds the combination in metal-graphite composite powder, Mn-Zn ferrite powder, manganese dioxide powder and the Shawinigan black powder.
Wherein, said metal-graphite composite powder particle diameter is a nano level, and is mingled with metals ion in graphite layers.Be preferably nanometer Fe-graphite composite powder.
Said Fe-graphite composite powder prepares by following method: graphite oxide is added in the iron nitrate aqueous solution, and the back that stirs is done in behaviour's case dry in 80 ℃, obtain iron nitrate-graphite oxide composite; It slowly is heated to back naturally cooling about 300 ℃ in retort furnace, the sample that obtains uses hydrogen reducing 8h promptly to obtain nanometer Fe-graphite composite powder down at 300 ℃ again.
Concrete, tool absorbs hertzian wave function putty and is mixed by following component:
Wave absorbing agent 10-50 mass parts;
Gelling material 10-45 mass parts;
Filler 10-60 mass parts;
Agglutinate 1-10 mass parts.
Wherein, described gelling material is a cement.Described filler is a kind of or wherein several kinds the combination in grey calcium, gypsum, coarse whiting, talcum powder, microballon or the perlite.Described agglutinate is rubber powder and cellulosic combination.Cellulose comprises 30～50% in the described agglutinate.
The present invention through adopt Shawinigan black powder, Mn-Zn ferrite powder, manganese dioxide powder, metal-graphite powder (nano level) with and compound as the function wave absorbing agent; In putty,, hertzian wave is absorbed with Mierocrystalline cellulose, rubber powder, grey calcium, cement, gypsum, coarse whiting, talcum powder, microballon or perlite, each composition acting in conjunction.
The present invention has the putty of electromagnetic wave absorption function, and hertzian wave is lower than at the reflectivity of 8～18GHz-5dB, has shown the pad value of reflection wave, explains that putty of the present invention can effectively absorb energy, makes the reflected energy decay.This putty can be applied to the interior wall or the exterior wall of building, during as the interior wall coating material, can effectively absorb the hertzian wave that indoor electric appliance etc. produces, and eliminates the influence of hertzian wave to personnel; When being applied to exterior wall, can intercept and absorb the electromagnetic radiation of signal towers such as TV, mobile phone, not only protect the personnel in the buildings not receive electromagnetic radiation, also can directly absorb hertzian wave, avoid reflection electromagnetic wave that the outer personnel of buildings are damaged.
Embodiment
Tool electromagnetic wave absorption function putty of the present invention comprises wave absorbing agent, gelling material, filler, agglutinate.Wherein:
Wave absorbing agent: for being selected from one or more the combination in the Shawinigan black powder, Mn-Zn ferrite powder, manganese dioxide powder, metal-graphite powder (nano level, and be mingled with metals ion in graphite layers), portfolio ratio was unrestricted when combination was used.Wave absorbing agent is functional material in the present invention, and it can be had an effect with hertzian wave, finally makes hertzian wave in coating material, produce eddy-current loss, magnetic hysteresis loss, the electromagnetic energy of loss.Wave absorbing agent shared mass percent in putty is 10% to 50%.
Shawinigan black powder, Mn-Zn ferrite powder, manganese dioxide powder all can be chosen from existing goods in the wave absorbing agent; Interlayer tramp metal ionic Graphite Powder 99 prepares by following method: with the Fe-Graphite Powder 99 is example, and graphite oxide is added in the iron nitrate aqueous solution, and the back that stirs is done in behaviour's case dry in 80 ℃, promptly obtain iron nitrate-graphite oxide composite; It slowly is heated to back naturally cooling about 300 ℃ in retort furnace, the sample that obtains uses hydrogen reducing 8h promptly to obtain nanometer Fe-graphite composite material powder down at 300 ℃ again.
Gelling material: cement.Shared mass percent is 10% to 45% in putty.
Filler: for being selected from one or more the combination in grey calcium, gypsum, coarse whiting, talcum powder, microballon or the perlite, portfolio ratio was unrestricted when combination was used.In putty, play skeleton function, shared mass percent is 10% to 60% in putty.
Agglutinate: rubber powder and Mierocrystalline cellulose combination are used, and prevent dry and cracked, the dry linting of putty in the present invention, and play water retention that shared mass percent is 1% to 10% in putty.Rubber powder and Mierocrystalline cellulose respectively in putty shared mass percent be 0.5% to 5%, the Mierocrystalline cellulose consumption accounted for 30～50% of agglutinate when combination was used; Rubber powder is a polymer dispersion powder, and Mierocrystalline cellulose is Vltra tears (HPMC)
Above constituent materials is all commercially available, mixes the putty powder that can obtain tool electromagnetic wave absorption function of the present invention by proportioning.During use, add entry than about 2:1 ratio, stir and to use in water, powder.
The detection of absorbing property:
The absorbing property of the suction ripple putty of the present invention's preparation utilizes network analyzer to adopt arc reflection method to test according to GB GJB2038-94 requirement.
Below specify the assembly and the absorbing property of electromagnetic wave absorption function putty of the present invention with specific embodiment.
Embodiment one:
Detection to absorbing property: by above-mentioned introduction method, under room temperature (25 ℃), measuring the Graphite Powder 99 mass percentage content is 28% o'clock, and this routine putty to hertzian wave at the minimum reflectance of 8～18GHz is-15dB.This numerical value has shown the pad value of reflection wave, explains that the putty of present embodiment can effectively absorb energy, makes the reflected energy decay.
Embodiment two:
Detection to absorbing property: by above-mentioned introduction method, under room temperature (25 ℃), measuring Shawinigan black opaque amount degree is 24% o'clock, and this routine putty decays in the average reflection of 8～18GHz-8dB hertzian wave.
Embodiment three:
Detection to absorbing property: by above-mentioned introduction method, under room temperature (25 ℃), measuring Mn-Zn ferrite powder mass percentage content is 16% o'clock, and putty decays in the average reflection of 8～18GHz-5dB hertzian wave.
Embodiment four:
Detection to absorbing property: by above-mentioned introduction method; Under room temperature (25 ℃); Measure Mn-Zn ferrite powder, manganese dioxide powder, iron powder mass percentage content and be respectively 20%, 20%, 10% o'clock, putty to hertzian wave at the minimum reflectance of 8～18GHz is-7dB.
Embodiment five:
Detection to absorbing property: by above-mentioned introduction method, under room temperature (25 ℃), measuring the Manganse Dioxide mass percentage content is 10% o'clock, and putty to hertzian wave at the minimum reflectance of 8～18GHz is-7dB.
Embodiment six:
Detection to absorbing property: by above-mentioned introduction method; Under room temperature (25 ℃); Measure carbonyl iron dust, ferrite powder, Graphite Powder 99 mass percentage content and be respectively 16%, 15%, 15% o'clock, putty to hertzian wave at the minimum reflectance of 8～18GHz is-15dB.
Reference examples:
Annotate: reference examples is according to 7 and 41 preparation of patented claim 200410040170.9 embodiment 3.
Detection to absorbing property: by above-mentioned introduction method, under room temperature (25 ℃), measuring reference examples putty is-4dB to explain that reference examples putty does not have the suction wave energy basically at the minimum reflectance of 8～18GHz to hertzian wave.
Claims (6)
1. a tool absorbs the putty of hertzian wave function; It is characterized in that; In the said putty of per 100 mass parts; The wave absorbing agent that contains the 10-50 mass parts, said wave absorbing agent are nanometer Fe-graphite composite powder, or one or more the combination in nanometer Fe-graphite composite powder and Mn-Zn ferrite powder, manganese dioxide powder and the Shawinigan black powder;
Said nanometer Fe-graphite composite powder prepares by following method: graphite oxide is added in the iron nitrate aqueous solution, and the back that stirs is done in behaviour's case dry in 80 ℃, obtain iron nitrate-graphite oxide composite; It slowly is heated to back naturally cooling about 300 ℃ in retort furnace, the sample that obtains uses hydrogen reducing 8h promptly to obtain nanometer Fe-graphite composite powder down at 300 ℃ again.
2. tool according to claim 1 absorbs hertzian wave function putty, it is characterized in that, is mixed by following component:
Wave absorbing agent 10-50 mass parts;
Cement cementitious material 10-45 mass parts;
Filler 10-60 mass parts;
The agglutinate 1-10 mass parts of rubber powder and Mierocrystalline cellulose combination.
3. tool according to claim 2 absorbs hertzian wave function putty, it is characterized in that described filler is a kind of or wherein several kinds the combination in grey calcium, gypsum, coarse whiting, talcum powder, microballon or the perlite.
4. tool according to claim 2 absorbs hertzian wave function putty, it is characterized in that Mierocrystalline cellulose accounts for 30～50% of agglutinate total amount by quality in the said agglutinate.
5. tool according to claim 2 absorbs hertzian wave function putty, it is characterized in that, for subordinate:
The constituent mass percentage composition
Ash calcium 6%
Gypsum 16%
Coarse whiting 5%
Talcum powder 5%
Cement 34%
Rubber powder 3%
Methylhydroxypropylcellulose 3%
Nanometer Fe-Graphite Powder 99 28%.
6. tool according to claim 2 absorbs hertzian wave function putty, it is characterized in that, for subordinate:
The constituent mass percentage composition
Ash calcium 10%
Gypsum 20%
Perlite 10%
Cement 10%
Rubber powder 3%
Methylhydroxypropylcellulose 1%
Manganese dioxide powder 16%
Mn-Zn ferrite powder 15%
Nanometer Fe-Graphite Powder 99 15%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102252247A CN101386721B (en) | 2008-10-28 | 2008-10-28 | Putty with electromagnetic wave absorption function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102252247A CN101386721B (en) | 2008-10-28 | 2008-10-28 | Putty with electromagnetic wave absorption function |
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| Publication Number | Publication Date |
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| CN101386721A CN101386721A (en) | 2009-03-18 |
| CN101386721B true CN101386721B (en) | 2012-05-02 |
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| CN2008102252247A Active CN101386721B (en) | 2008-10-28 | 2008-10-28 | Putty with electromagnetic wave absorption function |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101591523B (en) * | 2009-07-07 | 2013-02-27 | 大连理工大学 | Gradient electromagnetic wave-absorbing material and preparation method thereof |
| CN102086114B (en) * | 2010-11-19 | 2013-05-22 | 北京工业大学 | Ferrite gypsum-based microwave-absorbing composite material and preparation method thereof |
| CN102173703B (en) * | 2011-01-12 | 2013-03-27 | 北京工业大学 | Carbon black-gypsum based wave absorption composite material and preparation method thereof |
| CN102261840A (en) * | 2011-06-14 | 2011-11-30 | 南京信息工程大学 | Material containing device for sintering non-wave-absorbing material in microwave oven |
| CN103254696B (en) * | 2013-05-30 | 2015-10-21 | 熊丙志 | A kind of have inhale ripple, the environmental friendly indoor dry powder paint and preparation method thereof of anti-flaming function and constructional method |
| CN103903665B (en) * | 2014-01-20 | 2017-04-19 | 北京工业大学 | Cement mortar wideband shielding/ microwave absorbing composite structure building material with metal net and electromagnetic function |
| CN104045283A (en) * | 2014-06-18 | 2014-09-17 | 谢光玉 | Enhanced anti-cracking putty of wall |
| CN105541290A (en) * | 2015-12-23 | 2016-05-04 | 中国建筑材料科学研究总院 | Ceramic tile with electromagnetic wave absorption function and preparation method of ceramic tile |
| CN105504943B (en) * | 2016-01-04 | 2018-02-06 | 贵州航天风华精密设备有限公司 | One kind inhales ripple putty and preparation method thereof |
| CN108046688A (en) * | 2017-11-24 | 2018-05-18 | 湖南航天磁电有限责任公司 | A kind of magnetic suction ripple cement and preparation method thereof |
| CN110512754B (en) * | 2018-05-21 | 2024-01-02 | 中国建筑材料科学研究总院有限公司 | Composite insulation board with three-dimensional structure interface and preparation method thereof |
| CN110724405A (en) * | 2019-11-28 | 2020-01-24 | 航天科工武汉磁电有限责任公司 | Corrosion-resistant wave-absorbing putty and preparation method thereof |
| CN112919750A (en) * | 2019-12-06 | 2021-06-08 | 四川大学 | Method for treating excess sludge by microwave coupling manganese dioxide |
| CN114062440B (en) * | 2021-11-17 | 2023-04-07 | 广州市果欧电子科技有限公司 | Detection method and device for metal putty, electronic equipment and storage medium |
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