CN106517915A - Preparation method for double-layered cement-based wave-absorbing material - Google Patents
Preparation method for double-layered cement-based wave-absorbing material Download PDFInfo
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- CN106517915A CN106517915A CN201611015117.2A CN201611015117A CN106517915A CN 106517915 A CN106517915 A CN 106517915A CN 201611015117 A CN201611015117 A CN 201611015117A CN 106517915 A CN106517915 A CN 106517915A
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- absorbing material
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00258—Electromagnetic wave absorbing or shielding materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a preparation method for a double-layered cement-based wave-absorbing material. The preparation method for the double-layered cement-based wave-absorbing material comprises the following steps: (1) dispersing carbon nanotubes; (2) preparing a matching layer and a wave-absorbing layer; and (3) preparing the double-layered cement-based wave-absorbing material. According to the preparation method provided by the invention, the double-layered cement-based wave-absorbing material is prepared by taking cement-based mortar doped with expanded perlite as the matching layer and a cement-based material doped with multiwalled carbon nanotubes and FP type ferrites in a compound manner as the wave-absorbing layer. The preparation method is simple, and the prepared wave-absorbing material is good in effect.
Description
Technical field
The present invention relates to a kind of preparation method of double-layer cement base wave-absorbing material.
Background technology
While the fast development of information technology offers convenience to the world, also along with disadvantageously-electromagnetic radiation.Electricity
On the one hand magnetic radiation can work the mischief to human body, on the other hand can also interfere with instrument and use and with the leakage of information.Therefore nothing
By being civilian or military all propose higher requirement to the ability of the pre- anti-electromagnetic radiation of material.Cement-based material is used as most extensive
The construction material of various Architectural Equipments is applied to, the research to its electromagnetic radiation performance has great importance.
Absorbing material refer to can absorb, the electromagnetic wave of the incidence that decays, and its electromagnetic energy is fallen into heat energy loss, or is made
The class material that electromagnetic wave disappears because of interference, is typically composited by matrix material and suction ripple component.Absorbing material will be realized
Good absorbing property must possess two conditions：（1）Incident electromagnetic wave will be as much as possible into inside absorbing material not
Reflected in its front surface, i.e. the impedance matching property with material；（2）The electromagnetic wave of entrance promptly be able to will be absorbed by material
Attenuate, i.e., material will also be with the characteristic to the strong absorption of electromagnetic wave.Realize that the 1st requires that the wave impedance for needing to adjust material makes
Which is matched with free space；Realize that the 2nd requires to make material have higher electromagnetic consumable.Absorber to single constituent element, resistance
Anti- matching and strong absorption two are required usually can be conflicting.Therefore, it is to improve material electricity to prepare layered cement base absorbing material
Electro-magnetic wave absorption performance inhales a kind of solution of wave frequency band with widening.Found by early-stage Study, the method for introducing hole can be with
Effectively improve the impedance matching of material and free space.And expanded perlite is a kind of porous material is incorporated into cement-based material
In can introduce substantial amounts of hole, be conducive to improving the impedance matching of material.
Additionally, the absorbing material in ideal should have very strong absorbing property in wider absorption band, and material
The characteristics of expecting also to have thickness of thin and light weight. to improve the absorbing property of material, the wave absorbing agent of different loss characteristics can be entered
Row is compound to be incorporated in matrix to prepare the preferable absorbing material of absorbing property.
The content of the invention
It is contemplated that proposing a kind of preparation method of double-layer cement base wave-absorbing material.
Technical program of the present invention lies in：
The preparation method of double-layer cement base wave-absorbing material, comprises the steps：
（1）The dispersion of CNT
First dispersant is added in the beaker for filling water, and CNT continuation is added after 1min being stirred on magnetic stirring apparatus
Stirring 3min；After the completion of stirring, rotor is taken out and beaker is put in ultrasonic cleaner, be 20 DEG C in temperature, power is
Disperse 5min under conditions of 90W；
（2）The preparation of matching layer and suction ripple layer
First water is poured in agitated kettle, cement is subsequently adding and agitated kettle is put on mixer, risen and fixed；Start stirring
Machine, after low rate mixing 30s, is uniformly added to expanded perlite or sand in slurry at first in next 30s, then
High-speed stirred 30s；After stopping stirring 90s, then high-speed stirred 60s；By the mortar on paddle and stirring pot wall during stopping mixing
Scrape in agitated kettle；
（3）The preparation of double-layer cement base wave-absorbing material
Ripple layer is inhaled in first shaping, and the cement mortar for stirring is poured in above-mentioned identical square die trial, and ram-jolt shaping
To design thickness；Matching layer is poured again after mortar initial set and the floating aftershaping of ram-jolt terminates；After said sample shaping is completed,
It is (20 ± 2) DEG C that temperature is put into together with die trial, is conserved, mould of dismantling after 24h in the curing box of humidity ＞ 95%
Tool, is then placed in conserving to 28 days in the water of (20 ± 1) DEG C, that is, forms double-layer cement base wave-absorbing material.
The method have technical effect that：
The present invention using the cement-based mortar mixed with expanded perlite as matching layer, to mix multi-walled carbon nano-tubes and FP sections again
The cement-based material of oxysome prepares double-layer cement base wave-absorbing material as ripple layer is inhaled, and method is simple, made by absorbing material effect
It is good.
Specific embodiment
The preparation method of double-layer cement base wave-absorbing material, comprises the steps：
（1）The dispersion of CNT
First dispersant is added in the beaker for filling water, and CNT continuation is added after 1min being stirred on magnetic stirring apparatus
Stirring 3min；After the completion of stirring, rotor is taken out and beaker is put in ultrasonic cleaner, be 20 DEG C in temperature, power is
Disperse 5min under conditions of 90W；
（2）The preparation of matching layer and suction ripple layer
First water is poured in agitated kettle, cement is subsequently adding and agitated kettle is put on mixer, risen and fixed；Start stirring
Machine, after low rate mixing 30s, is uniformly added to expanded perlite or sand in slurry at first in next 30s, then
High-speed stirred 30s；After stopping stirring 90s, then high-speed stirred 60s；By the mortar on paddle and stirring pot wall during stopping mixing
Scrape in agitated kettle；
（3）The preparation of double-layer cement base wave-absorbing material
Ripple layer is inhaled in first shaping, and the cement mortar for stirring is poured in above-mentioned identical square die trial, and ram-jolt shaping
To design thickness；Matching layer is poured again after mortar initial set and the floating aftershaping of ram-jolt terminates；After said sample shaping is completed,
It is (20 ± 2) DEG C that temperature is put into together with die trial, is conserved, mould of dismantling after 24h in the curing box of humidity ＞ 95%
Tool, is then placed in conserving to 28 days in the water of (20 ± 1) DEG C, that is, forms double-layer cement base wave-absorbing material.
Claims (1)
1. the preparation method of double-layer cement base wave-absorbing material, it is characterised in that：Comprise the steps：
（1）The dispersion of CNT
First dispersant is added in the beaker for filling water, and CNT continuation is added after 1min being stirred on magnetic stirring apparatus
Stirring 3min；After the completion of stirring, rotor is taken out and beaker is put in ultrasonic cleaner, be 20 DEG C in temperature, power is
Disperse 5min under conditions of 90W；
（2）The preparation of matching layer and suction ripple layer
First water is poured in agitated kettle, cement is subsequently adding and agitated kettle is put on mixer, risen and fixed；Start stirring
Machine, after low rate mixing 30s, is uniformly added to expanded perlite or sand in slurry at first in next 30s, then
High-speed stirred 30s；After stopping stirring 90s, then high-speed stirred 60s；By the mortar on paddle and stirring pot wall during stopping mixing
Scrape in agitated kettle；
（3）The preparation of double-layer cement base wave-absorbing material
Ripple layer is inhaled in first shaping, and the cement mortar for stirring is poured in above-mentioned identical square die trial, and ram-jolt shaping
To design thickness；Matching layer is poured again after mortar initial set and the floating aftershaping of ram-jolt terminates；After said sample shaping is completed,
It is (20 ± 2) DEG C that temperature is put into together with die trial, is conserved, mould of dismantling after 24h in the curing box of humidity ＞ 95%
Tool, is then placed in conserving to 28 days in the water of (20 ± 1) DEG C, that is, forms double-layer cement base wave-absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015117.2A CN106517915A (en) | 2016-11-18 | 2016-11-18 | Preparation method for double-layered cement-based wave-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611015117.2A CN106517915A (en) | 2016-11-18 | 2016-11-18 | Preparation method for double-layered cement-based wave-absorbing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106517915A true CN106517915A (en) | 2017-03-22 |
Family
ID=58352691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611015117.2A Pending CN106517915A (en) | 2016-11-18 | 2016-11-18 | Preparation method for double-layered cement-based wave-absorbing material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986570A (en) * | 2017-04-13 | 2017-07-28 | 武汉理工大学 | High-performance wave-absorbing concrete using carbon black/ferriferrous oxide material and preparation method thereof |
| CN107032703A (en) * | 2017-04-13 | 2017-08-11 | 武汉理工大学 | Utilize ferroso-ferric oxide and the compound cement-based absorption material of coal fly ash hollow micro bead and preparation method thereof |
| CN109020422A (en) * | 2018-09-28 | 2018-12-18 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN109553364A (en) * | 2019-01-21 | 2019-04-02 | 河北工业大学 | The double-deck electromagnetic wave absorption concrete and preparation method thereof based on 3D and jet printing |
| CN110272243A (en) * | 2019-06-21 | 2019-09-24 | 中国人民解放军火箭军工程大学 | A kind of double-layer cement base wave-absorbing material and preparation method thereof |
-
2016
- 2016-11-18 CN CN201611015117.2A patent/CN106517915A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986570A (en) * | 2017-04-13 | 2017-07-28 | 武汉理工大学 | High-performance wave-absorbing concrete using carbon black/ferriferrous oxide material and preparation method thereof |
| CN107032703A (en) * | 2017-04-13 | 2017-08-11 | 武汉理工大学 | Utilize ferroso-ferric oxide and the compound cement-based absorption material of coal fly ash hollow micro bead and preparation method thereof |
| CN109020422A (en) * | 2018-09-28 | 2018-12-18 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN109020422B (en) * | 2018-09-28 | 2019-06-25 | 长安大学 | A kind of 3D printing carbon nanotube ultra-high performance concrete and preparation method thereof |
| CN109553364A (en) * | 2019-01-21 | 2019-04-02 | 河北工业大学 | The double-deck electromagnetic wave absorption concrete and preparation method thereof based on 3D and jet printing |
| CN109553364B (en) * | 2019-01-21 | 2021-03-05 | 河北工业大学 | Double-layer electromagnetic wave-absorbing concrete based on 3D and jet printing and preparation method thereof |
| CN110272243A (en) * | 2019-06-21 | 2019-09-24 | 中国人民解放军火箭军工程大学 | A kind of double-layer cement base wave-absorbing material and preparation method thereof |
| CN110272243B (en) * | 2019-06-21 | 2021-11-05 | 中国人民解放军火箭军工程大学 | Double-layer cement-based wave-absorbing material and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |
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| WD01 | Invention patent application deemed withdrawn after publication |