CN106278141A - A kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate and preparation method thereof - Google Patents
A kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate and preparation method thereof Download PDFInfo
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- CN106278141A CN106278141A CN201510292329.4A CN201510292329A CN106278141A CN 106278141 A CN106278141 A CN 106278141A CN 201510292329 A CN201510292329 A CN 201510292329A CN 106278141 A CN106278141 A CN 106278141A
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Abstract
The invention discloses a kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate and preparation method thereof.Described magnetizing mediums type function haydite, with clay, wave absorbing agent as primary raw material, by adding appropriate pore creating material, forms through high-temperature firing, and shared by each raw material, mass percent is: clay 58～95%, wave absorbing agent 4～32%, pore creating material 1～10%.The preparation method of described magnetizing mediums type function haydite comprises the following steps: mass percent as shared by each raw material weighs raw material mix homogeneously；Balling-up pelletize；One-tenth ball particle is dried, calcines, cools down, obtains described magnetizing mediums type function haydite.Magnetizing mediums type function haydite prepared by this method has with low cost, the advantage such as hole is uniform, mechanical property good and absorbing property is excellent, and the preparation technology that relates to is simple, be applied in electromagnetic wave absorption concrete can the absorbing property of Concrete Structure, make concrete take into account absorbing property and mechanical property.
Description
Technical field
The invention belongs to the interleaving techniques field of architectural materials science and electromagnetism science, be specifically related to a kind of as electromagnetic wave absorption concrete collection
Magnetizing mediums type function haydite of material and preparation method thereof.
Background technology
Along with developing rapidly of science and technology, " electromagnetic pollution " that electromagnetic radiation causes is the most serious on the impact of environment.Electromagnetism
The normal working performance of electronic equipment is not only disturbed in radiation, and serious harm human body is healthy, and information the most also can be caused to let out
Dew, brings harm greatly to country's military affairs, politics, economic development.Therefore the absorbing material studying function admirable is dirty at electromagnetism
Dye purification, the secrecy of electronic information, prevent electronics preparation interference and protection health aspect have important realistic meaning.
At present, common have decay the gathering materials for expanded perlite, EPS, rubber etc., wherein Porous-Organic collection of electromagnetic wave function
(EPS, expanded rubber) is the most aging, intensity is low for material, and because its hydrophobicity and apparent density are little poor with the cement based compatibility；
Expanded perlite, although have certain absorbing property, but himself intensity is relatively low, hence it is evident that reduce concrete strength and cracking resistance.
Additionally, these gather materials is all to utilize multiple scattering, the reflection-absorption electromagnetic wave gathering materials in vestibule, the dielectric constant of material own and magnetic
Conductance is less, does not have electromagnetic consumable function so that ripple usefulness is relatively low, useful effect frequency range is narrower in concrete suction.
Summary of the invention
It is an object of the invention to provide a kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate and preparation method thereof, institute
The magnetizing mediums type function haydite stated has good absorbing property and mechanical property, is applied in concrete, can Concrete Structure
Absorbing property, make concrete take into account mechanical property and absorbing property.
For achieving the above object, the technical solution used in the present invention is: a kind of magnetizing mediums type function as electromagnetic wave absorption concrete aggregate
Haydite, it is with clay, wave absorbing agent, pore creating material as raw material, and shared by each raw material, mass percent is: clay 58～95%, wave absorbing agent 4～32%,
Pore creating material 1～10%, mass percent sum shared by each raw material is 100%.
In such scheme, described clay is that the clay taking from soil is dried to biodiversity content≤4%, and broken rear grinding is to particle diameter
The clay powder body of≤0.15mm.
In such scheme, described wave absorbing agent is one or more in manganese-zinc ferrite, nickel-zinc ferrite, ferroso-ferric oxide, ferrum silica flour
Mix in any proportion.
In such scheme, described pore creating material is the one in starch, mica powder, magnesium carbonate.
The preparation method of above-mentioned a kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate, comprises the steps:
1) mixing of raw material: clay, wave absorbing agent and pore creating material are respectively 58～95%, 4～32% and 1～10% according to mass percent
Ratio weigh, be subsequently placed in mix homogeneously in stirred tank, obtain mixing raw material；
2) idiosome molding: mixing raw material is placed on granulating disc water spray pelletize, obtains the spherical raw material that particle diameter is 2～15mm；
3) ceramsite sintering: send in nitrogen atmosphere stove after spherical raw material are dried and calcine, concretely comprise the following steps: with 5～20 DEG C/min
Speed be at the uniform velocity warming up to 1100～1300 DEG C, be incubated 20～50min；It is finally cooled to room temperature, obtains described magnetizing mediums type function haydite.
Can be applicable in concrete as electromagnetic wave absorption concrete aggregate according to magnetizing mediums type function haydite prepared by such scheme.
Magnetizing mediums type function haydite prepared by the present invention has good absorbing property and mechanical property.Use clay as matrix material；
Wave absorbing agent is scattered in matrix material as inhaling wave energy component, makes haydite have good absorbing property；Wave absorbing agent can be solid-solution in a large number
In magnetizing mediums type function haydite, increase wave absorbing agent in the volume of concrete and kind, make concrete to the sensitivity of electromagnetic wave and effect frequency
Section adjustability strengthens；Pore creating material regulation haydite pore structure, contributes to haydite and passes through resonance loss electromagnetic wave absorption, improve haydite further
Inhale ripple usefulness.
The invention has the beneficial effects as follows:
1) the haydite absorbing property that prepared by the present invention is good, can gather materials as suction ripple and replace sand, stone to be evenly distributed in concrete, strengthen
The suction ripple usefulness of concrete is high, and widens its suction ripple frequency range.
2) the haydite mechanical property fired preferably (cylindrical compress strength is more than 10MPa), mixing can be as load-bearing aggregate in concrete, it is ensured that mixed
The mechanical property of solidifying soil.
3) absorbing property and the mechanical property of magnetizing mediums type function haydite of the present invention can be carried out by feed change proportioning and firing temperature
Regulation and control.
4) raw material related to is clay and the raw material of industry, and preparation cost is relatively low, can realize industrialization and produce.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with embodiment, but present disclosure is not only
It is confined to the following examples.
In following example, as no specific instructions, the reagent of employing is commercially available chemical reagent or industrial products.
Described clay is that the clay taking from soil is dried to moisture≤4% (quality), broken rear grinding gluing to particle diameter≤0.15mm
Soil powder body.
In following example, according to GB/T 17431-2010 " light-weight aggregate and test method thereof " to prepared magnetizing mediums type function haydite
Cylindrical compress strength, water absorption rate and bulk density test；Electromagnetic parameter uses coaxial transmission collimation method to test；Reflectance
(d=10mm) obtain according to electromagnetic parameters.Test according to GJB 2038A-2011 " radar absorbing reflectivity test method "
The reflectance of wave absorption concrete, inhales ripple coagulation according to GB/T 50081-2011 " standard for test methods of mechanical properties of ordinary concrete " test
The comprcssive strength of soil.
Embodiment 1
A kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate, it (is made with clay, ferrum silica flour (wave absorbing agent), starch
Hole agent) it is raw material, through balling-up, it is dried, fires and form, shared by each raw material, mass percent is: clay 83%, ferrum silica flour 10%,
Starch 7%, mass percent sum shared by each raw material is 100%；Its preparation method comprises the following steps:
1) mixing of raw material: clay, ferrum silica flour and starch are carried out according to the ratio of mass percent respectively 83%, 10% and 7%
Weigh, add mix homogeneously in stirring mixing kettle, obtain mixing raw material；
2) idiosome molding: mixing raw material is placed on granulating disc water spray pelletize, obtains the spherical raw material that particle diameter is 10mm；
3) ceramsite sintering: send in nitrogen atmosphere stove after spherical raw material are dried and calcine, concretely comprise the following steps: with 20 DEG C/min's
Speed is at the uniform velocity warming up to 1280 DEG C, is incubated 25min, is finally cooled to room temperature, obtains described magnetizing mediums type function haydite.
The magnetizing mediums type function haydite that the present embodiment prepares is carried out cylindrical compress strength, water absorption rate, bulk density, electromagnetic parameter and reflection
The performance tests such as rate, the results are shown in Table 1.
Table 1 embodiment 1 prepares the main performance index of magnetizing mediums type function haydite
Table 1 illustrates that the magnetizing mediums type function haydite absorbing property that embodiment prepares is good, intensity is high.
By the present embodiment prepare magnetizing mediums type function haydite be applied to prepare wave absorption concrete, specifically comprise the following steps that by cement, water,
Sand, magnetizing mediums type function haydite than mix homogeneously, obtain wave absorption concrete with the quality of 1:0.4:1:2.
Prepared wave absorption concrete is carried out reflectance and intensity test, and result shows: in 8～18GHz frequency ranges, inhales ripple and mixes
The minimum reflectance of solidifying soil is-12.2dB, and the reflectance absorption frequency range less than-10dB reaches 6.4GHz；The 28d of wave absorption concrete resists
Compressive Strength is 42.2MPa.
Embodiment 2
A kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate, it with clay, ferroso-ferric oxide, manganese-zinc ferrite,
Mica powder is raw material (ferroso-ferric oxide and manganese-zinc ferrite are wave absorbing agent), through balling-up, is dried, fires and form, quality shared by each raw material
Percentage ratio is: clay 76%, ferroso-ferric oxide 7%, manganese-zinc ferrite 15%, mica powder 2%, mass percent shared by each raw material it
With for 100%；Its preparation method comprises the following steps:
1) mixing of raw material: clay, ferroso-ferric oxide, manganese-zinc ferrite and mica powder are respectively 76% according to mass percent, 7%,
The ratio of 15% and 2% weighs, and adds mix homogeneously in stirring mixing kettle, obtains mixing raw material；
2) idiosome molding: mixing raw material is placed on granulating disc water spray pelletize, obtains the spherical raw material that particle diameter is 15mm；
3) ceramsite sintering: send in nitrogen atmosphere stove after spherical raw material are dried and calcine, concretely comprise the following steps: with the speed of 5 DEG C/min
Rate is at the uniform velocity warming up to 1120 DEG C, is incubated 45min, is finally cooled to room temperature, obtains described magnetizing mediums type function haydite.
The magnetizing mediums type function haydite that the present embodiment prepares is carried out cylindrical compress strength, water absorption rate, bulk density, electromagnetic parameter and reflection
The performance tests such as rate, the results are shown in Table 2.
Table 2 embodiment 2 prepares the main performance index of magnetizing mediums type function haydite
Table 2 illustrates that the magnetizing mediums type function haydite absorbing property that embodiment prepares is good, intensity is high.
By the present embodiment prepare magnetizing mediums type function haydite be applied to prepare wave absorption concrete, specifically comprise the following steps that by cement, water,
Sand, magnetizing mediums type function haydite than mix homogeneously, obtain wave absorption concrete with the quality of 1:0.4:1:2.
Prepared wave absorption concrete is carried out reflectance and intensity test, and result shows: in 8～18GHz frequency ranges, inhales ripple and mixes
The minimum reflectance of solidifying soil is-12.5dB, and the reflectance absorption frequency range less than-10dB reaches 5.8GHz；The 28d of wave absorption concrete resists
Compressive Strength is 42.6MPa.
Embodiment 3
A kind of magnetizing mediums type function haydite as electromagnetic wave absorption concrete aggregate, it with clay, nickel-zinc ferrite, manganese-zinc ferrite,
Ferrum silica flour, magnesium carbonate are raw material (nickel-zinc ferrite, manganese-zinc ferrite and ferrum silica flour are wave absorbing agent), through balling-up, are dried, fire and form,
Shared by each raw material, mass percent is: clay 64%, nickel-zinc ferrite 12%, manganese-zinc ferrite 7%, ferrum silica flour 12%, magnesium carbonate
5%, mass percent sum shared by each raw material is 100%；Its preparation method comprises the following steps:
1) mixing of raw material: clay, nickel-zinc ferrite, manganese-zinc ferrite, ferrum silica flour, magnesium carbonate are respectively according to mass percent
64%, the ratio of 12%, 7%, 12% and 5% weighs, and adds mix homogeneously in stirring mixing kettle, obtains mixing raw material；
2) idiosome molding: mixing raw material is placed on granulating disc water spray pelletize, obtains the spherical raw material that particle diameter is 5mm；
3) ceramsite sintering: send in nitrogen atmosphere stove after spherical raw material are dried and calcine, concretely comprise the following steps: with 10 DEG C/min's
Speed is at the uniform velocity warming up to 1200 DEG C, is incubated 35min, is finally cooled to room temperature, obtains described magnetizing mediums type function haydite.
The magnetizing mediums type function haydite that the present embodiment prepares is carried out cylindrical compress strength, water absorption rate, bulk density, electromagnetic parameter and reflection
The performance tests such as rate, the results are shown in Table 3.
Table 3 embodiment 3 prepares the main performance index of magnetizing mediums type function haydite
Table 3 illustrates that the magnetizing mediums type function haydite absorbing property that embodiment prepares is good, intensity is high.
By the present embodiment prepare magnetizing mediums type function haydite be applied to prepare wave absorption concrete, specifically comprise the following steps that by cement, water,
Sand, magnetizing mediums type function haydite than mix homogeneously, obtain wave absorption concrete with the quality of 1:0.4:1:2.
Prepared wave absorption concrete is carried out reflectance and intensity test, and result shows: in 8～18GHz frequency ranges, inhales ripple and mixes
The minimum reflectance of solidifying soil is-13.5dB, and the reflectance absorption frequency range less than-10dB reaches 6.1GHz；The 28d of wave absorption concrete resists
Compressive Strength is 40.7MPa.
Each raw material cited by the present invention can realize the present invention, and the bound value of each raw material, interval value can realize this
Inventing, bound value and the interval value of the technological parameter (such as temperature, time etc.) of the present invention can realize the present invention,
This does not enumerate embodiment.
Claims (6)
1. one kind be used as electromagnetic wave absorption concrete aggregate magnetizing mediums type function haydite, it is characterised in that it with clay, wave absorbing agent, make
Hole agent is raw material, and mass percent shared by each raw material is: clay 58～95%, wave absorbing agent 4～32%, pore creating material 1～10%, each raw material
Shared mass percent sum is 100%.
Magnetizing mediums type function haydite the most according to claim 1, it is characterised in that described clay is that the clay taking from soil dries
Do to biodiversity content≤4%, then through broken, the clay powder body of grinding to particle diameter≤0.15mm.
Magnetizing mediums type function haydite the most according to claim 1, it is characterised in that described wave absorbing agent is manganese-zinc ferrite, nickel
One or more in Zn ferrite, ferroso-ferric oxide, ferrum silica flour mix in any proportion.
Magnetizing mediums type function haydite the most according to claim 1, it is characterised in that described pore creating material be starch, mica powder,
One in magnesium carbonate.
5. the preparation method of the magnetizing mediums type function haydite described in any one of Claims 1 to 4, it is characterised in that comprise the steps:
1) mixing of raw material: clay, wave absorbing agent and pore creating material are respectively 58～95%, 4～32% and 1～10% according to mass percent
Ratio weigh, be then uniformly mixed, obtain mixing raw material；
2) idiosome molding: mixing raw material is placed on comminutor water spray pelletize, obtains the spherical raw material that particle diameter is 2～15mm；
3) ceramsite sintering: send in nitrogen atmosphere stove after spherical raw material are dried and calcine, concretely comprise the following steps: with 5～20 DEG C/min
Speed be at the uniform velocity warming up to 1100～1300 DEG C, be incubated 20～50min；It is finally cooled to room temperature, obtains described magnetizing mediums type function haydite.
6. the magnetizing mediums type function haydite described in any one of Claims 1 to 4 is as the application of electromagnetic wave absorption concrete aggregate.
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Application publication date: 20170104 |