CN109293372A - A kind of functional material for electromagnetic wave absorption and preparation method thereof and wave absorption concrete - Google Patents
A kind of functional material for electromagnetic wave absorption and preparation method thereof and wave absorption concrete Download PDFInfo
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- CN109293372A CN109293372A CN201811258202.0A CN201811258202A CN109293372A CN 109293372 A CN109293372 A CN 109293372A CN 201811258202 A CN201811258202 A CN 201811258202A CN 109293372 A CN109293372 A CN 109293372A
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Abstract
The present invention provides a kind of functional material for electromagnetic wave absorption and preparation method thereof and wave absorption concretes, based on parts by weight, raw material includes following components to functional material: 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and 50~100 parts of clay mineral；The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~7wt% and Fe2O35~6wt%.The functional material, by addition iron powder, ferrous manganese ore powder and clay mineral, makes it have higher absorbing property using flyash and gangue as primary raw material.Intensity, lower apparent density and lower water absorption rate also with higher.The cylindrical compress strength of functional material is 12.9~13.8MPa；Water absorption rate is 6.2~7.6%；Reflectivity is -13.5~-14.8dB.
Description
Technical field
The invention belongs to electromagnetic wave absorption field of material technology more particularly to a kind of functional materials for electromagnetic wave absorption
And preparation method thereof and wave absorption concrete.
Background technique
Today's society, with the high speed development of modern electronics industry and the generally use of each electronic product, mobile communication,
Broadcast, radar, magnetic therapy, computer etc. have become people's daily life often in contact with while, so that electromagenetic wave radiation is become one
The new social effects of pollution of kind.Electromagenetic wave radiation will affect the health of people, and can cause to the electronic equipment of surrounding
Severe jamming keeps transparent working level occurred sequence random, generates malfunction；Meanwhile electromagnetic radiation can reveal information, make to calculate
The instruments such as machine are without security assurance information.
Electromagnetic Shielding Concrete is a kind of protection as obtained from improving to concrete or blocks electromagnetic wave and mix
Solidifying soil, main function are the leakage and external electromagnetic interference for preventing building interior electromagnetic signal.With public's wireless telecommunications with
The extensive use of electronic and electrical equipment, the threat that bring electromagnetic environment deteriorates and electromagnetic signal leakage is given away secrets are got worse,
This is just that concrete blocks electromagnetic wave more stringent requirements are proposed, therefore the research will be enlivened more.
Domestic and international Electromagnetic Shielding Concrete is usually carbon dope, carbon fiber, silicon carbide fibre, graphite and magnetic in concrete
Property particle etc..Jia Zhi bravely indicates that the building concrete of research shielding both at home and abroad is mostly that carbon dope or carbon are fashionable in concrete, and refer to
Shielding concrete, which is illustrated, to be had militarily, protective works prevent nuclear explosion electromagnetism from killing, interfering and conventional electromagnetic weapon kills,
The electromagnetic shielding of interference protects, and limits in a certain range domestic electromagnetic pollution.Close the new year, Ou Jinping points out fibre reinforced
Cement-base composite material, compared with normal concrete, not only tensile strength is high, Ultimate Tensile should become larger for it, but also has temperature
The characteristics such as perception and electromagnetic shielding certainly of degree and pressure.
Summary of the invention
In view of this, the functional material and preparation method thereof that the purpose of the present invention is to provide a kind of for electromagnetic wave absorption
And wave absorption concrete, which makes full use of flyash, and has preferable absorbing property.
The present invention provides a kind of functional materials for electromagnetic wave absorption, and based on parts by weight, raw material includes with the following group
Point:
500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and clay
50~100 parts of mineral；
The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~7wt% and Fe2O35~
6wt%.
Preferably, the clay mineral is selected from one of sodium bentonite, calcium-base bentonite and kaolin or a variety of.
Preferably, the granularity of raw material is 200~400 mesh.
Preferably, raw material specifically includes following components:
500 parts of flyash, 100 parts of coal gangue powder, 50 parts of iron powder, 50 parts of ferrous manganese ore powder, 65 parts of sodium bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 100 parts of iron powder, 50 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 50 parts of iron powder, 100 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 200 parts of coal gangue powder, 100 parts of iron powder, 100 parts of ferrous manganese ore powder, 50 parts of calcium-base bentonite, it is high
50 parts of ridge soil.
The present invention provides a kind of preparation method for the functional material that electromagnetic wave absorption is used for described in above-mentioned technical proposal, packets
Include following steps:
By 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and glue
50~100 parts of native mineral mixing, obtain mixture；
Drying is conserved after the mixture is granulated, obtains spherical raw material；
The spherical raw material are kept the temperature at 580 DEG C~630 DEG C and are kept the temperature at being warming up to 1100~1200 DEG C after 25~35min
30~60min obtains the functional material for electromagnetic wave absorption.
Preferably, the dry temperature of the maintenance is 70~100 DEG C, and conserving the dry time is 6~12h.
Preferably, 580 DEG C~630 DEG C are warming up to 5~10 DEG C of heating rates；It is warming up to 5 DEG C/min heating rate
1100~1200 DEG C.
The present invention provides a kind of wave absorption concretes, are 1:0.2~0.4:0.8~1.2:2.2~2.8 including mass ratio
The suction wave energy haydite that cement, water, the suction wave energy pottery sand of 20~70 mesh of granularity and granularity are 5~10mm；
The suction wave energy pottery sand and suction wave energy haydite are functional material described in above-mentioned technical proposal or above-mentioned technology
The functional material of the preparation of preparation method described in scheme.
The present invention provides a kind of functional materials for electromagnetic wave absorption, and based on parts by weight, raw material includes with the following group
Point: 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and clay mineral 50
~100 parts；The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~7wt% and Fe2O35~
6wt%.The functional material is using flyash and coal gangue powder as primary raw material, by adding iron powder, ferrous manganese ore powder and clay mineral,
Make it have higher absorbing property.Intensity, lower apparent density and lower water absorption rate also with higher.Experimental result
Show: the cylindrical compress strength of functional material is 12.9~13.8MPa；Bulk density is 1456kg/m3~1535kg/m3；Water absorption rate is
6.2~7.6%；Reflectivity is -13.5~-14.8dB.The 28d compression strength of wave absorption concrete is 42.5~45.6MPa；8
~18GHz frequency range, the minimum reflectance of wave absorption concrete are -12.8dB~-11.4dB, absorption frequency of the reflectivity less than -10dB
Section reaches 6.6GHz~5.2GHz.
Specific embodiment
The present invention provides a kind of functional materials for electromagnetic wave absorption, and based on parts by weight, raw material includes with the following group
Point:
500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and clay
50~100 parts of mineral；
The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~7wt% and Fe2O35~
6wt%.
Provided by the present invention for electromagnetic wave absorption functional material using flyash and gangue as primary raw material, by adding
Add iron powder, ferrous manganese ore powder and clay mineral, makes it have higher absorbing property.It is intensity also with higher, lower apparent
Density and lower water absorption rate.
Raw material provided by the present invention for the functional material of electromagnetic wave absorption includes 500 parts of flyash；The flyash
Granularity be preferably 200~400 mesh.The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~
7wt% and Fe2O35~6wt%.It is also preferable to include CeO for the flyash2、TiO2、ZrO2、Na2O、MgO、K2O and CeO2.Fine coal
Ash is the distinctive solid waste of thermoelectricity industry, and 10 tons of coals of every burning can produce 250~300 kilograms of flyash.Currently, with regard to it
For utilization rate, the U.S., European Union are 70~80%, and China only has 30~40%, this is because the quality of fly ash in China is not
Stablize, recycling performance is poor, strongly limits its application range and quantity.
Raw material provided by the present invention for the functional material of electromagnetic wave absorption includes 100~200 parts of coal gangue powder.It is described
The granularity of coal gangue powder is preferably 200~400 mesh.The carbon content of the coal gangue powder is preferably 20~40%, and more preferably 30
~40%.Gangue is that coal mine filters out waste；The ingredient of gangue includes SiO251~53%；Al2O331~33%；
Fe2O33.7~3.9%；CaO 2.30~2.35% and MgO 2.40~2.42%；In a particular embodiment, the gangue
Concrete composition are as follows: SiO252%；Al2O332%；Fe2O33.8%；CaO 2.32%；MgO 2.41%；TiO2
0.90%；K2O+Na2O 1.45% and other microcomponents.During the sintering process, the titanium dioxide that the carbon burning in gangue generates
The ferrite that carbon gas can protect sintering to generate is not oxidized for iron oxide (Fe2O3)；Foaming of the gangue as functional material
Agent plays foaming effect using the carbon dioxide that burning generates, reduces the apparent density of functional material.
Raw material provided by the present invention for the functional material of electromagnetic wave absorption includes 50~100 parts of iron powder.The iron powder
Granularity be preferably 200~400 mesh.The iron powder forms the ferroso-ferric oxide with electromagnetic wave absorption during the sintering process and improves
The absorbing property of functional material.
Raw material provided by the present invention for the functional material of electromagnetic wave absorption includes 50~100 parts of ferrous manganese ore powder.It is described
The granularity of ferrous manganese ore powder is preferably 200~400 mesh.Ferrous manganese ore belongs to one of magnetite-series mineral in spinelle race.
Raw material provided by the present invention for the functional material of electromagnetic wave absorption includes 50~100 parts of clay mineral.It is described
The granularity of clay mineral is preferably 200~400 mesh.The clay mineral is preferably selected from sodium bentonite, calcium-base bentonite and height
One of ridge soil is a variety of.The clay mineral can not only improve the intensity of functional material, also act synergistically with other components,
Help to improve the suction wave energy of functional material.
In the specific embodiment of the invention, the raw material of the functional material for electromagnetic wave absorption includes flyash 500
Part, 100 parts of gangue, 50 parts of iron powder, 50 parts of ferrous manganese ore powder, 65 parts of sodium bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 100 parts of iron powder, 50 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 50 parts of iron powder, 100 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 200 parts of coal gangue powder, 100 parts of iron powder, 100 parts of ferrous manganese ore powder, 50 parts of calcium-base bentonite, it is high
50 parts of ridge soil.
The present invention provides a kind of preparation method for the functional material that electromagnetic wave absorption is used for described in above-mentioned technical proposal, packets
Include following steps:
By 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and glue
50~100 parts of native mineral mixing, obtain mixture；
Drying is conserved after the mixture is granulated, obtains spherical raw material；
The spherical raw material are kept the temperature at 580 DEG C~630 DEG C and are kept the temperature at being warming up to 1100~1200 DEG C after 25~35min
30~60min obtains the functional material for electromagnetic wave absorption.
The present invention is by 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, ferrous manganese ore powder 50~100
Part and 50~100 parts of clay mineral mixing, obtain mixture.In the present invention, the flyash, coal gangue powder, iron powder, manganese iron
Consistent described in the type and above-mentioned technical proposal of miberal powder and clay mineral, details are not described herein.
Flyash, coal gangue powder, iron powder, ferrous manganese ore powder and clay mineral are preferably placed in ball milling in ball mill by the present invention,
Mixing, screening, obtains the mixture of 200~400 mesh.If granularity of raw material itself is all 200~400 mesh, only need to be by raw material
It is placed in stirred tank and is uniformly mixed, obtain mixture.
After obtaining mixture, the present invention conserves drying after being granulated the mixture, obtains spherical raw material.The present invention is preferred
Mixture is placed in granulating disc well known to those skilled in the art to be granulated；Mixture is placed in granulating disc disk
It is interior, it is granulated in water spray；The revolving speed of pelletizer is preferably 30~40rpm.
After obtaining spherical raw material, the present invention rises after the spherical raw material are kept the temperature 25~35min at 580 DEG C~630 DEG C
Temperature obtains the functional material for electromagnetic wave absorption to 30~60min of heat preservation at 1100~1200 DEG C.The present invention is preferably in high temperature
It is sintered in furnace or rotary kiln.The present invention is preferably warming up to 580 DEG C~630 DEG C with 5~10 DEG C of heating rates；With 5 DEG C/min
Heating rate is warming up to 1100~1200 DEG C.The present invention is preferably under air atmosphere or oxygen-lean atmosphere by spherical raw material at 580 DEG C
30~60min of heat preservation at 1100~1200 DEG C is warming up to after keeping the temperature 25~35min at~630 DEG C.Preferably through certainly after sintering
It is so cooled to room temperature, obtains the functional material for electromagnetic wave absorption.
Provided by the present invention for the functional material of electromagnetic wave absorption, not only electromagnetic wave absorption performance is good, also has in use
Have durability, safety, stability, can construction property it is good, construction technology is technically simple, and electromagnetism environmental protection and environmental suitability etc. are all
Outstanding advantage in terms of various remarkable advantages, especially economy greatly facilitates the use of material, reduces material
Use cost, widened the application field of the material, can be widely applied to it is various carry out electromagnetic shielding and radar it is hidden
In the concrete construction engineering of body.The suction wave energy material of preparation method preparation provided by the invention has excellent suction wave function
Can, preparation method is simple, easily operated.The functional material, which has, inhales wave energy and preferable mechanical property.
The present invention provides a kind of wave absorption concretes, are 1:0.2~0.4:0.8~1.2:2.2~2.8 including mass ratio
The suction wave energy haydite of suction the wave energy pottery sand and 5~10mm of granularity of cement, water, 20~70 mesh of granularity；The suction wave energy pottery
Sand and suction wave energy haydite are prepared by preparation method described in functional material or above-mentioned technical proposal described in above-mentioned technical proposal
Functional material.The functional material gathers materials as wave absorption concrete.
The suction wave energy haydite that the cement, water, the suction wave energy pottery sand of 20~70 mesh of granularity and granularity are 5~10mm
Mass ratio is preferably 1:0.25~0.35:0.9~1.1:2.3~2.6, more preferably 1:0.3:1:2.5.The cement is preferably
42.5 grade cements.
Wave absorption concrete compression strength with higher and preferable absorbing property.
In order to further illustrate the present invention, below with reference to embodiment to provided by the invention a kind of for electromagnetic wave absorption
Functional material and preparation method thereof and wave absorption concrete are described in detail, but cannot be interpreted as them to protect the present invention
The restriction of range.
The flyash used in following embodiment includes Al2O332.639%, SiO244.373%, CaO 5.890%,
TiO21.446%, CeO20.106%, Fe2O35.087%, K2O 0.901%, MgO 0.584%, Na20.461% He of O
ZrO20.119%.
The gangue used in following embodiment includes SiO252%；Al2O332%；Fe2O33.8%；CaO
2.32%；MgO 2.41%；TiO20.90%；K2O+Na2O 1.45% and other microcomponents.
Embodiment 1
1) material weighing mixing
By 500 parts of flyash, 100 parts of coal gangue powder, 50 parts of iron powder, 50 parts of ferrous manganese ore powder, 65 parts of sodium bentonite, according to
Parts by weight are weighed, and ball mill ball milling, mixing are subsequently placed in, and by 200~400 meshes point, obtain mixture；
(2) granulating and forming
Mixture is placed in granulating disc disk, by being granulated in water spray, pelletizer revolving speed controls 30~
40r/min obtains spherical raw material；
(3) drying is conserved
The spherical raw material that will be prepared, are placed in baking oven, carry out maintenance drying, and maintenance drying temperature is 100 DEG C, and the time is
12h；
(4) ceramisite sintered
Spherical raw material after drying are sintered in high temperature furnace or rotary kiln, specific sintering step are as follows: with 10 DEG C/
The rate of min at the uniform velocity heats up 600 DEG C of heat preservation 30min, then rises to 1150 DEG C with 5 DEG C/min heating rate, keeps the temperature 40min；Most
By cooled to room temperature, the functional material with electromagnetic wave absorption is obtained.
Embodiment 2
1) material weighing mixing
By 500 parts of the flyash of 200~400 mesh, 150 parts of the coal gangue powder of 200~400 mesh, 200~400 mesh iron powder
100 parts, 50 parts of the ferrous manganese ore powder of 200~400 mesh, 100 parts of calcium-base bentonite of 200~400 mesh, are claimed according to parts by weight
It takes, is placed in stirred tank and is uniformly mixed, obtain mixture；
(2) granulating and forming
Mixture is placed in granulating disc disk, by being granulated in water spray, pelletizer revolving speed is controlled in 30r/
Min obtains spherical raw material；
(3) drying is conserved
The spherical raw material that will be prepared, are placed in baking oven, carry out maintenance drying, and maintenance drying temperature is 100 DEG C, and the time is
12h；
(4) ceramisite sintered
Spherical raw material after drying are sintered in high temperature furnace or rotary kiln, specific sintering step are as follows: with 10 DEG C/
The rate of min at the uniform velocity heats up 600 DEG C of heat preservation 30min, then rises to 1125 DEG C with 5 DEG C/min heating rate, keeps the temperature 40min；Most
By cooled to room temperature, the functional material with electromagnetic wave absorption is obtained.
Embodiment 3
1) material weighing mixing
By 500 parts of flyash, 150 parts of gangue, 50 parts of iron powder, 100 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite, according to
Parts by weight are weighed, and ball mill ball milling, mixing are subsequently placed in, and by 200~400 meshes point, obtain mixture；
(2) granulating and forming
Mixture is placed in granulating disc disk, by being granulated in water spray, pelletizer revolving speed is controlled in 30r/
Min obtains spherical raw material；
(3) drying is conserved
The spherical raw material that will be prepared, are placed in baking oven, carry out maintenance drying, and maintenance drying temperature is 100 DEG C, and the time is
12h；
(4) ceramisite sintered
Spherical raw material after drying are sintered in high temperature furnace or rotary kiln, specific sintering step are as follows: with 10 DEG C/
The rate of min at the uniform velocity heats up 600 DEG C of heat preservation 30min, then rises to 1150 DEG C with 5 DEG C/min heating rate, keeps the temperature 40min；Most
By cooled to room temperature, the functional material with electromagnetic wave absorption is obtained.
Embodiment 4
1) material weighing mixing
By 500 parts of flyash, 200 parts of gangue, 100 parts of iron powder, 100 parts of ferrous manganese ore powder, 50 parts of calcium-base bentonite and height
50 parts of ridge soil, is weighed according to parts by weight, is subsequently placed in ball mill ball milling, mixing, by 200~400 meshes point, is obtained
Mixture；
(2) granulating and forming
Mixture is placed in granulating disc disk, by being granulated in water spray, pelletizer revolving speed is controlled in 30r/
Min obtains spherical raw material；
(3) drying is conserved
The spherical raw material that will be prepared, are placed in baking oven, carry out maintenance drying, and maintenance drying temperature is 100 DEG C, and the time is
12h；
(4) ceramisite sintered
Spherical raw material after drying are sintered in high temperature furnace or rotary kiln, specific sintering step are as follows: with 10 DEG C/
The rate of min at the uniform velocity heats up 600 DEG C of heat preservation 30min, then rises to 1150 DEG C with 5 DEG C/min heating rate, keeps the temperature 40min；Most
By cooled to room temperature, the functional material with electromagnetic wave absorption is obtained.
The present invention to made from Examples 1 to 4 with electromagnetic wave absorption functional material carry out cylindrical compress strength, water absorption rate,
The performance tests such as bulk density, electromagnetic parameter and reflectivity, the results are shown in Table 1:
The performance test results of the functional material of 1 embodiment of the present invention 1~4 of table preparation
Note: in table 1, ε and μ respectively represent the real part of complex permeability and complex dielectric permittivity, indicate that material deposits electromagnetic wave
Energy storage power, ε ' and μ ' respectively represent the imaginary part of complex permeability and complex dielectric permittivity, indicate material to the decaying energy of electromagnetic wave energy
Power.
As shown in Table 1, there is preferable wave absorbtion for the functional material of electromagnetic wave absorption as made from Examples 1 to 4
Can, physical and mechanical property has reached GB/T 17431-2010 " light-weight aggregate and its test method " to light-weight aggregate cylindrical compress strength, water suction
The requirement of rate and bulk density.
It will be used for the functional material screening of electromagnetic wave absorption made from the embodiment of the present invention 1~4, obtains 20~70 mesh of granularity
Suction wave energy material as inhale wave energy pottery sand；The suction wave energy material of 5~10mm of granularity is as suction wave energy haydite.
It is applied to the above-mentioned function haydite for being used for electromagnetic wave absorption, function pottery sand to prepare wave absorption concrete, specific steps
It is as follows: cement, water, suction wave energy pottery sand, suction wave energy haydite being uniformly mixed with the mass ratio of 1:0.3:1:2.5, are prepared into
To wave absorption concrete, the cement used is 42.5 grade cement.
Wave absorption concrete obtained is subjected to reflectivity and intensity test, as a result are as follows: in 8~18GHz frequency range, inhale wave
The minimum reflectance of concrete is -12.8dB, -12.4dB, -11.4dB, -12.5dB, and reflectivity is less than the absorption frequency range of -10dB
Up to 6.6GHz, 6.2GHz, 5.7GHz, 5.2GHz；The 28d compression strength of wave absorption concrete be 44.6MPa, 43.2MPa,
42.5MPa、45.6MPa。
As seen from the above embodiment, the present invention provides a kind of functional materials for electromagnetic wave absorption, with parts by weight
Meter, raw material includes following components: 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, ferrous manganese ore powder 50~
100 parts and 50~100 parts of clay mineral；The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5
~7wt% and Fe2O35~6wt%.The functional material is using flyash and gangue as primary raw material, by adding iron powder, manganese iron
Miberal powder and clay mineral make it have higher absorbing property.Intensity also with higher, lower apparent density and lower
Water absorption rate.The results showed that the cylindrical compress strength of functional material is 12.9~13.8MPa；Bulk density is 1456kg/m3~
1535kg/m3；Water absorption rate is 6.2~7.6%；Reflectivity is -13.5~-14.8dB.The 28d compression strength of wave absorption concrete is
42.5~45.6MPa；In 8~18GHz frequency range, the minimum reflectance of wave absorption concrete is -12.8dB~-11.4dB, reflectivity
Absorption frequency range less than -10dB reaches 6.6GHz~5.2GHz.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of functional material for electromagnetic wave absorption, based on parts by weight, raw material includes following components:
500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and clay mineral
50~100 parts；
The flyash includes Al2O330~35wt%, SiO240~50wt%, CaO 5~7wt% and Fe2O35~6wt%.
2. functional material according to claim 1, which is characterized in that the clay mineral is selected from sodium bentonite, calcium base
One of bentonite and kaolin are a variety of.
3. functional material according to claim 1, which is characterized in that the granularity of raw material is 200~400 mesh.
4. functional material according to claim 2, which is characterized in that raw material specifically includes following components:
500 parts of flyash, 100 parts of coal gangue powder, 50 parts of iron powder, 50 parts of ferrous manganese ore powder, 65 parts of sodium bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 100 parts of iron powder, 50 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 150 parts of coal gangue powder, 50 parts of iron powder, 100 parts of ferrous manganese ore powder, 100 parts of calcium-base bentonite；
Or 500 parts of flyash, 200 parts of coal gangue powder, 100 parts of iron powder, 100 parts of ferrous manganese ore powder, 50 parts of calcium-base bentonite, kaolin
50 parts.
5. the preparation method described in a kind of any one of Claims 1 to 4 for the functional material of electromagnetic wave absorption, including following step
It is rapid:
By 500 parts of flyash, 100~200 parts of coal gangue powder, 50~100 parts of iron powder, 50~100 parts of ferrous manganese ore powder and clay pit
50~100 parts of object mixing, obtain mixture；
Drying is conserved after the mixture is granulated, obtains spherical raw material；
The spherical raw material keep the temperatures at 580 DEG C~630 DEG C and keep the temperature 30 at being warming up to 1100~1200 DEG C after 25~35min~
60min obtains the functional material for electromagnetic wave absorption.
6. preparation method according to claim 5, which is characterized in that the dry temperature of the maintenance is 70~100 DEG C, is supported
The shield dry time is 6~12h.
7. preparation method according to claim 5, which is characterized in that with 5~10 DEG C of heating rates be warming up to 580 DEG C~
630℃；1100~1200 DEG C are warming up to 5 DEG C/min heating rate.
8. a kind of wave absorption concrete is 1:0.2~0.4:0.8~1.2:2.2~2.8 cement, water, granularity 20 including mass ratio
The suction wave energy haydite for inhaling wave energy pottery sand and granularity is 5~10mm of~70 mesh；
The suction wave energy pottery sand and suction wave energy haydite are that any one of Claims 1 to 4 functional material or right are wanted
Seek the functional material of any one of 5~7 preparation method preparations.
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