CN103903665B - Cement mortar wideband shielding/ microwave absorbing composite structure building material with metal net and electromagnetic function - Google Patents
Cement mortar wideband shielding/ microwave absorbing composite structure building material with metal net and electromagnetic function Download PDFInfo
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- CN103903665B CN103903665B CN201410025168.8A CN201410025168A CN103903665B CN 103903665 B CN103903665 B CN 103903665B CN 201410025168 A CN201410025168 A CN 201410025168A CN 103903665 B CN103903665 B CN 103903665B
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Abstract
The invention relates to a cement mortar wideband shielding/ microwave absorbing composite structure building material with a metal net and an electromagnetic function. According to the cement mortar wideband shielding/ microwave absorbing composite structure building material with the metal net and the electromagnetic function, the metal net is embedded in cement mortar, microwave absorbing agents with different contents (the content can be zero, namely any microwave absorbing agent is not added) are mixed at different thickness positions of cement mortar, and electromagnetic wave conversion layers and electromagnetic wave absorbing layers are formed respectively. The cement mortar wideband shielding/ microwave absorbing composite structure building material with the metal net and the electromagnetic function has the advantage of being strong in shielding and microwave absorbing.
Description
Technical field
The present invention relates to a kind of cement mortar wideband with wire netting shields/inhales ripple composite construction function solenoid Building wood
Material, the function solenoid construction material of the structure have a bandwidth, the characteristics of shielding/inhale ripple is strong.
Background technology
With the development of social economy, the especially great-power electromagnetic radiation device fast development of various electromagnetic radiation equipment,
Such as electric power transmission line and transformer station, radio communication transmitting station, electric railway etc..With cities and towns closeness more and more higher,
These great-power electromagnetic radiation devices are inevitably increasingly nearer with building, thus indoor electromagnetic environmental pollution is progressively added
It is acute.For electromagnetic radiation pollution problem, propose using the cement based function solenoid building for mixing graphite, carbon fiber, steel fibre etc.
Material is shielded to electromagnetic wave and is absorbed.However, the working frequency range of this cement based function solenoid construction material is Microwave Frequency
Section, the protection to low frequency, great-power electromagnetic radiation device are also helpless.Metal mesh opening is a kind of conventional electromagnetic shielding handss
Section, which depends on mesh aperture and wire diameter to different frequency range shielding electromagnetic waves efficiency, based on this feature, in cement
On the basis of base function solenoid construction material, metal mesh opening is added, you can realize to low frequency, great-power electromagnetic radiation device electromagnetism
The shielding and absorption of ripple.
The content of the invention
To solve the deficiency in prior art, the present invention proposes a kind of shielding of the cement mortar wideband with wire netting/suction
Ripple composite construction.Which employs the following technical solutions：
A kind of cement mortar wideband shields/inhales ripple composite construction function solenoid construction material, it is characterised in that：Wire netting is embedding
Enter in cement mortar, form electromagnetic waveform layer and electromagnetic wave absorbing layer respectively and relative to body of wall electromagnetic waveform layer be outside
Outer layer, electromagnetic wave absorbing layer is interior for internal layer；The embedded location of wire netting in rubber-ferrite layer, in electromagnetic waveform layer,
Or while in electromagnetic waveform layer, rubber-ferrite layer, or between electromagnetic waveform layer, rubber-ferrite layer.
Further, the electromagnetic waveform layer, when the environment electromagnetics wave energy for needing to shield/absorb accounts for more than 90% frequency
When spectral component is less than 100MHz, its thickness is 2cm～3cm；During more than 100MHz, its thickness is 0.1cm～2cm.
Further, the rubber-ferrite layer, when the environment electromagnetics wave energy for needing to shield/absorb accounts for more than 90% frequency
When spectral component is less than 100MHz, its thickness is 2.5cm～5cm；During more than 100MHz, its thickness is 0.5cm～2.5cm.
Further, the electromagnetic waveform layer and electromagnetic wave absorbing layer also mix wave absorbing agent.
Further, the incorporation of wave absorbing agent gradually increases from outer layer to internal layer.
Further, when using graphite as wave absorbing agent, the mass percentage content scope that electromagnetic waveform layer is mixed is 0
～5%, the content range that rubber-ferrite layer is mixed is 1%～15%.
Further, the content of wave absorbing agent is identical in identical thickness position.
Further, the aperture of wire netting is 0.5cm～50cm, and the wire diameter of wire netting is 0.01cm～1cm.
Based on the above, the wave absorbing agent content that ground floor and second layer different-thickness position mix（Can be 0）According to
The electromagnetic wave band limits Practical Calculation of shielding/absorption draws.Wire netting is placed parallel to body of wall.
The present invention on the basis of cement based function solenoid construction material, using metal mesh opening different pore size size and difference
The wire diameter principle different to different frequency electromagnetic shielding effectiveness, by the wire netting of certain pore size is embedded into cement
In base function solenoid construction material, reach on the basis of original microwave frequency band inhales ripple, increase and low-frequency electromagnetic wave is shielded and is inhaled
The purpose of receipts.
Description of the drawings
Fig. 1 (a) is shielding/suction ripple composite construction schematic diagram
Fig. 1 (b) is shielding/suction ripple composite construction electromagnetic wave shielding（Metal mesh opening）Schematic diagram
It is result of calculation figure of 1cm～50cm wire nettings to different frequency electromagnetic shielding effectiveness that Fig. 2 is pore size
It is result of calculation figure of 1cm～25cm wire nettings to different frequency electromagnetic shielding effectiveness that Fig. 3 is pore size
Fig. 4 is the band wire netting of actual preparation（Pore size is 15cm）Cement mortar wideband shield/inhale ripple composite junction
Structure function solenoid construction material shield effectiveness test result figure
It is result of calculation figure of 0.5cm～5cm wire nettings to different frequency electromagnetic shielding effectiveness that Fig. 5 is pore size
Specific embodiment
1. the cement mortar wideband with wire netting shields/inhale ripple composite construction includes the cement mortar wideband screen of wire netting
Ripple function solenoid construction material is covered/inhales, in the embedded cement mortar of wire netting, different-thickness position mixes difference and contains in cement mortar
The wave absorbing agent of amount, forms electromagnetic waveform layer and electromagnetic wave absorbing layer, shown in such as Fig. 1 (a) respectively.Ground floor electromagnetic waveform layer
Cement mortar is with second layer electromagnetic wave absorbing layer, any wave absorbing agent, ground floor electromagnetic waveform layer and the second layer is added without
The common 4cm of electromagnetic wave absorbing layer thickness.Wire netting selects steel wire, and embedded location is in first and second layer of centre, mesh aperture 40cm, gold
Category silk diameter 0.5cm, shown in such as Fig. 1 (b).Fig. 2 is calculating of the different pore size wire netting to different frequency electromagnetic shielding effectiveness
Result figure, in mesh aperture 40cm, the shield effectiveness of the low-frequency electromagnetic wave such as its radio broadcasting to below 30MHz is
More than 10.81dB, is below 0.05dB to the microwave frequency band shielding electromagnetic waves such as more than 900MHz mobile communication efficiency.The screen
Cover/inhale ripple composite construction function solenoid construction material and be applied to the building near high power low-frequency electromagnetic radiation equipment, it is right to need
The low frequency electromagnetic radiation of below 30MHz has the shield effectiveness of more than 10dB, but does not shield/absorb mobile communication frequency range electromagnetic wave
Situation.
2. the cement mortar wideband with wire netting shields/inhale ripple composite construction includes the cement mortar wideband screen of wire netting
Ripple function solenoid construction material is covered/inhales, in the embedded cement mortar of wire netting, different-thickness position mixes difference and contains in cement mortar
The wave absorbing agent of amount, forms electromagnetic waveform layer and electromagnetic wave absorbing layer, shown in such as Fig. 1 (a) respectively.Ground floor electromagnetic waveform layer
Cement mortar is with second layer electromagnetic wave absorbing layer substrate, ground floor electromagnetic waveform thickness degree 1cm act as impedance
Match somebody with somebody, graphite is added from outer layer to internal layer（Wave absorbing agent）Content gradually increase, scope be 0.1%～0.5%.Second layer electromagnetic wave is inhaled
It is 3cm to receive thickness degree, act as electromagnetic wave absorption, and graphite is added from outer layer to internal layer（Wave absorbing agent）Content gradually increase, its
Content range is 0.5～5%.Wire netting selects steel wire, embedded location in the second layer between, mesh aperture 15cm, wire diameter
Shown in 0.1cm, such as Fig. 1 (b).Fig. 3 is result of calculation figure of the different pore size wire netting to different frequency electromagnetic shielding effectiveness,
During mesh aperture 15cm, the shield effectiveness of the low-frequency electromagnetic wave such as its radio broadcasting to below 30MHz is more than 20.41dB, right
The microwave frequency band shielding electromagnetic waves such as more than 900MHz mobile communication efficiency is below 0.5dB.Electromagnetic waveform layer and electromagnetic wave
Absorbed layer adds a certain amount of graphite so that the shielding/suction ripple composite construction function solenoid construction material is applied near big
The building of power low frequency electromagnetic radiation equipment, needs the shield effectiveness for having more than 20dB to the low frequency electromagnetic radiation of below 30MHz,
And have certain situation for inhaling ripple efficiency to mobile communication frequency range electromagnetic wave.Fig. 4 is the band wire netting of actual preparation（Pore size is
15cm）Cement mortar wideband shield/inhale ripple composite construction function solenoid construction material shield effectiveness test result figure.
3. the cement mortar wideband with wire netting shields/inhale ripple composite construction includes the cement mortar wideband screen of wire netting
Ripple function solenoid construction material is covered/inhales, in the embedded cement mortar of wire netting, different-thickness position mixes difference and contains in cement mortar
The wave absorbing agent of amount, forms electromagnetic waveform layer and electromagnetic wave absorbing layer, shown in such as Fig. 1 (a) respectively.Ground floor electromagnetic waveform layer
Cement mortar is with second layer electromagnetic wave absorbing layer substrate, ground floor electromagnetic waveform thickness degree 1cm act as impedance
Match somebody with somebody, graphite is added from outer layer to internal layer（Wave absorbing agent）Content gradually increase, scope be 0.1%～1%.Second layer electro-magnetic wave absorption
Thickness degree is 2cm, act as electromagnetic wave absorption, and graphite is added from outer layer to internal layer（Wave absorbing agent）Content gradually increase, which contains
Amount scope is 1～10%.Wire netting selects steel wire, embedded location in the second layer between, mesh aperture 1.2cm, wire diameter
Shown in 0.05cm, such as Fig. 1 (b).Fig. 4 is result of calculation figure of the different pore size wire netting to different frequency electromagnetic shielding effectiveness,
In mesh aperture 1.2cm, which to the microwave frequency band shielding electromagnetic waves efficiency such as 900MHz～2600MHz mobile communication is
More than 10.69dB.Electromagnetic waveform layer and electromagnetic wave absorbing layer add a certain amount of graphite so that the shielding/suction ripple is combined
Structure function solenoid construction material suitable for away from high power low-frequency electromagnetic radiation equipment, but near mobile communication base station, especially
It is the situation of the main direction of the launch just to antenna of mobile communication base station, needs to microwaves such as 900MHz～2600MHz mobile communication
Frequency range shielding electromagnetic waves efficiency and suction ripple efficiency are the situation of more than 10dB.
Claims (3)
1. a kind of cement mortar wideband shields/inhales ripple composite construction function solenoid construction material, in the embedded cement mortar of wire netting,
It is characterized in that：Ground floor electromagnetic waveform layer and second layer electromagnetic wave absorbing layer are cement mortar, are added without any suction ripple
Agent, ground floor electromagnetic waveform layer and the common 4cm of second layer electromagnetic wave absorbing layer thickness；Wire netting selects steel wire, embedded location to exist
In the middle of ground floor electromagnetic waveform layer and second layer electromagnetic wave absorbing layer, mesh aperture 40cm, wire diameter 0.5cm.
2. a kind of cement mortar wideband shields/inhales ripple composite construction function solenoid construction material, in the embedded cement mortar of wire netting,
It is characterized in that：In cement mortar, different-thickness position mixes the wave absorbing agent of different content, forms ground floor electromagnetic wave respectively and becomes
Change layer and second layer electromagnetic wave absorbing layer；Ground floor electromagnetic waveform layer and second layer electromagnetic wave absorbing layer substrate are cement bonded sand
Slurry, ground floor electromagnetic waveform thickness degree 1cm act as impedance matching, add the content of graphite gradually to increase from outer layer to internal layer
Greatly, scope is 0.1%～0.5%；Second layer electromagnetic wave absorbing layer thickness is 3cm, act as electromagnetic wave absorption, from outer layer to interior
Layer adds the content of graphite gradually to increase, and its content range is 0.5～5%；Wire netting selects steel wire, and embedded location is in the second layer
In the middle of electromagnetic wave absorbing layer, mesh aperture 15cm, wire diameter 0.1cm.
3. a kind of cement mortar wideband shields/inhales ripple composite construction function solenoid construction material, in the embedded cement mortar of wire netting,
It is characterized in that：In cement mortar, different-thickness position mixes the wave absorbing agent of different content, forms ground floor electromagnetic wave respectively and becomes
Change layer and second layer electromagnetic wave absorbing layer；Ground floor electromagnetic waveform layer and second layer electromagnetic wave absorbing layer substrate are cement bonded sand
Slurry, ground floor electromagnetic waveform thickness degree 1cm act as impedance matching, add the content of graphite gradually to increase from outer layer to internal layer
Greatly, scope is 0.1%～1%；Second layer electromagnetic wave absorbing layer thickness is 2cm, act as electromagnetic wave absorption, from outer layer to internal layer
The content of graphite is added gradually to increase, its content range is 1～10%；Wire netting selects steel wire, and embedded location is in second layer electricity
In the middle of electro-magnetic wave absorption layer, mesh aperture 1.2cm, wire diameter 0.05cm.
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| CN201410025168.8A CN103903665B (en) | 2014-01-20 | 2014-01-20 | Cement mortar wideband shielding/ microwave absorbing composite structure building material with metal net and electromagnetic function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105275106A (en) * | 2015-11-05 | 2016-01-27 | 中国建筑材料科学研究总院 | Anti-electromagnetic radiation building |
| CN106760001B (en) * | 2016-11-23 | 2019-07-19 | 中国建筑材料科学研究总院 | Outer wall structure of building |
| CN106760032A (en) * | 2016-12-13 | 2017-05-31 | 中国建筑材料科学研究总院 | Wall body structure and building |
| CN111857421B (en) * | 2020-07-14 | 2022-12-27 | 北海翰博士科技有限公司 | Wear-resisting type touch panel with metal mesh on surface |
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