CN205320456U - Electromagnetic wave absorbs board - Google Patents
Electromagnetic wave absorbs board Download PDFInfo
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- CN205320456U CN205320456U CN201520945278.6U CN201520945278U CN205320456U CN 205320456 U CN205320456 U CN 205320456U CN 201520945278 U CN201520945278 U CN 201520945278U CN 205320456 U CN205320456 U CN 205320456U
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Abstract
The utility model provides an electromagnetic wave absorbs board, include: the gypsum composite bed, set up respectively in the first paper rete and the second paper rete of gypsum composite bed both sides, set up in resistance nethike embrane layer on the first paper rete, resistance nethike embrane layer is formed by conductive coating, set up in the last protection rete of resistive layer, set up in electrically conductive rete on the second paper rete. The utility model provides an electromagnetic wave absorbs board includes the gypsum composite bed, first paper rete, second paper rete, resistance nethike embrane layer, protection rete and electrically conductive rete, the electromagnetic wave incides and absorbs the board surface, it gets into the absorption intralamellar part and reaches the electrically conductive rete in bottom to see through the resistance nethike embrane, by the electrically conductive rete of bottom and the resistance nethike embrane reflected refraction that makes a round trip, because incident, the reflection, the resonance of refraction electromagnetic phase mutual interference will lead to the electromagnetic energy to produce the loss, thereby reach the effect of fine absorption electromagenetic wave radiation, and the utility model discloses the selection of above -mentioned rete can greatly reduced material thickness.
Description
Technical field
This utility model relates to building material technical field, especially relates to a kind of electromagnetic wave absorption board.
Background technology
Developing rapidly along with information-intensive society, electronic product is increasingly widespread. Electronic product bring huge simultaneously easily, also bring certain harm. Especially, greatly popularizing of the e-machine of built-in information processor, and the arithmetic speed of CPU increasingly high speed, consequent high-frequency electromagnetic wave excitation and noise pollution are also increasingly severe. The signal of communication, computer and various electronic system that human lives is not only relied on by electromagnetic environment day by day that worsen is propagated and is produced impact, causes system and device misoperation, brings unpredictable disaster, and human body health can be brought threat. Research shows, works for a long time, studying and living near wave electromagnetic radiation source pooling zone, the physical and mental health of people can be caused serious harm. Cause the damage of brain, nerve, endocrine and cell tissue. All attach great importance to more and more complicated electromagnetic environment and wide influence thereof for these countries in the world, electromagnetic environment protection has become a new disciplines field developed rapidly with electromagnetic compatibility technology.
It addition, developing rapidly along with economy and urbanization, the electromagnetic environment of city space becomes increasingly complex, also occurs in that many new problems simultaneously. Such as, due to development and the expansion in city, the residential block that some big-and-middle-sized radio and television are newly developed with the radio communication transmitting station is surrounded, and resident living area, local forms high electric area; Mobile communication technology quickly grows, city proper skyscraper is erected hundreds and thousands of mobile communication firing base stations, city high-altitude radio field intensity is made to strengthen, local building is contaminated, along with urban power consumption increases and urban network reconstruction engineering construction, high voltage substation enters downtown area;City Traffic Transport System (automobile, electric car, subway, light rail and electric railway) develops rapidly and causes city electromagnetic noise in rising trend, in addition Personal Radio Communications's means and household electrical appliance increase, family's subenvironment electromagnetic energy density increases, indoor electric magnetic environment combines together with outdoor electromagnetic environment, makes urban electromagnetic environment total amount be continuously increased.
In consideration of it, electromagnetic pollution has been classified as second largest environmental pollution by WHO. For better purifying space electromagnetic environment, it is prevented that hazards of electromagnetic radiation, protection people are physically and mentally healthy, and hazards of electromagnetic radiation protection has become as a very urgent and important task.
Prior art, for the protection of electromagnetic radiation, mainly adopts electromagnetic radiation protective materiall and goods. Wherein, adopting electromagnetic wave absorbent material is the effective ways eliminating electromagnetic radiation pollution. Current architecture indoor electromagnetic radiation protective materiall mostly adopts Binder Materials and the doping mixing of other specific radiation proof materials, but can there is, when promoting Electromagnetic performance, the problem that thickness also to strengthen in such scheme, as achieved over the absorption of 10db at 2～4GHz, thickness often needs to reach more than 2cm, and this thickness limits the application that it is very big.
Utility model content
In view of this, the technical problems to be solved in the utility model is in that to provide a kind of electromagnetic wave absorption board, and the electromagnetic wave absorption board that this utility model provides can be good at electromagnetic wave absorption radiation and thickness is relatively low.
This utility model provides a kind of electromagnetic wave absorption board, including:
Plaster composite layer;
It is respectively arranged at the first paper membrane layer and the second paper membrane layer of plaster composite layer both sides;
Being arranged at the resistance nethike embrane layer on described first paper membrane layer, described resistance nethike embrane layer is formed by electrically-conducting paint;
It is arranged at the protection rete on described resistive layer;
It is arranged at the conductive film layer on described second paper membrane layer.
Preferably, one or more in conductive carbon paint, conductive copper coating, conductive silver coating and conductive nickel coating of described electrically-conducting paint.
Preferably, the sheet resistance resistance of described resistance nethike embrane layer is 350～420 Ω/.
Preferably, described resistance nethike embrane layer be shaped as grid-shaped, hollow hexagonal or hollow octagon.
Preferably, described plaster composite layer includes: basic material 100～110 weight portion, binding agent 6～9 weight portion, reinforcing agent 2～6 weight portion, conductive material 1～3.5 weight portion, auxiliary agent 27～37 weight portion, water 45～55 weight portion.
Preferably, described conductive material includes carbon fiber and conductive carbon black.
Preferably, described basic material includes Gypsum Fibrosum and white cement.
Preferably, one or more in aluminum film, copper film and ferrum film of described conductive film layer.
Preferably, the thickness ratio of described plaster composite layer, the first paper membrane layer, the second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer is (1.0～1.1)): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2).
Preferably, described protection rete is formed by one or more in PVC, PE and waterproof paper.
Compared with prior art, this utility model provides a kind of electromagnetic wave absorption board, including: plaster composite layer; It is respectively arranged at the first paper membrane layer and the second paper membrane layer of plaster composite layer both sides; Being arranged at the resistance nethike embrane layer on described first paper membrane layer, described resistance nethike embrane layer is formed by electrically-conducting paint; It is arranged at the protection rete on described resistive layer;It is arranged at the conductive film layer on described second paper membrane layer. the electromagnetic wave absorption board that this utility model provides includes plaster composite layer, first paper membrane layer, second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer, electromagnetic wave incident is to baffle surface, enter baffle inside through resistance nethike embrane and reach bottom conducting film layer, reflected by the conductive film layer of bottom and resistance nethike embrane roundtrip, due to incidence, reflection, the position of refracted electromagnetic ripple interferes resonance mutually will cause that electromagnetic energy produces loss, thus reaching the effect of good electromagnetic wave absorption radiation, and the selection of the above-mentioned rete of this utility model can be substantially reduced material thickness, the premise at relatively low thickness is made to be issued to the effect of good electromagnetic wave absorption radiation.
Accompanying drawing explanation
The structural representation of the electromagnetic wave absorption board that Fig. 1 provides for this utility model.
Detailed description of the invention
This utility model provides a kind of electromagnetic wave absorption board, including:
Plaster composite layer;
It is respectively arranged at the first paper membrane layer and the second paper membrane layer of plaster composite layer both sides;
Being arranged at the resistance nethike embrane layer on described first paper membrane layer, described resistance nethike embrane layer is formed by electrically-conducting paint;
It is arranged at the protection rete on described resistive layer;
It is arranged at the conductive film layer on described second paper membrane layer.
The electromagnetic wave absorption board that this utility model provides includes plaster composite layer.
In this utility model, described plaster composite layer preferably includes: basic material 100～110 weight portion, binding agent 6～9 weight portion, reinforcing agent 2～6 weight portion, conductive material 1～3.5 weight portion, auxiliary agent 27～37 weight portion, water 45～55 weight portion. The thickness of described plaster composite layer is preferably 1.0～1.1cm.
In this utility model, described basic material preferably includes Gypsum Fibrosum and white cement, it is furthermore preferred that described basic material includes Gypsum Fibrosum 95～100 weight portion; White cement 5～10 weight portion.
In this utility model, described binding agent is preferably polyvinyl alcohol.
In this utility model, described reinforcing agent is preferably glass fibre.
In this utility model, described conductive material preferably includes carbon fiber and conductive carbon black, it is furthermore preferred that described conductive material includes carbon fiber 0.1～0.5 weight portion, conductive carbon black 1～3 weight portion; Most preferably include carbon fiber 0.1～0.3 weight portion, conductive carbon black 1～3 weight portion.
In this utility model, described auxiliary agent preferably includes dolomite dust, Pulvis Talci, starch and methylcellulose; Described auxiliary agent more preferably includes dolomite dust 15～20 weight portion, Pulvis Talci 8～10 weight portion, starch 4～6 weight portion and methylcellulose 0.1～0.3 weight portion.
This utility model makes to obtain the material of certain dielectric constant by the plaster composite layer of above-mentioned specific components and proportioning, reduces thickness and cost further.
This utility model is not defined for the source of above-mentioned each material, it is preferred to commercially available.
The electromagnetic wave absorption board that this utility model provides includes the first paper membrane layer and the second paper membrane layer that are arranged at plaster composite layer both sides. Described first paper membrane layer is preferably formed by kraft paper; Described second paper membrane layer is preferably formed by kraft paper.
The thickness of the first paper membrane layer described in the utility model is preferably 0.01～0.2cm, more preferably 0.01～0.05cm, it is most preferred that be 0.01～0.02cm; The thickness of described second paper membrane layer is preferably 0.01～0.2cm, more preferably 0.01～0.05cm, it is most preferred that be 0.01～0.02cm.
The electromagnetic wave absorption board that this utility model provides includes the resistance nethike embrane layer being arranged on described first paper membrane layer, and described resistance nethike embrane layer is formed by electrically-conducting paint.
The thickness of resistance nethike embrane layer described in the utility model is preferably 0.01～0.2cm, more preferably 0.01～0.05cm, it is most preferred that be 0.01～0.02cm.
In this utility model, described electrically-conducting paint is preferably selected from one or more in conductive carbon paint, conductive copper coating, conductive silver coating and conductive nickel coating.
The sheet resistance resistance of described resistance nethike embrane layer is preferably 350～420 Ω/, more preferably 360～410 Ω/.
Electrically-conducting paint described in the utility model is printed onto on the first paper membrane layer preferably by the mode of printing; The resistance nethike embrane layer that described printing obtains be preferably shaped to grid-shaped, hollow hexagonal, hollow octagon. Namely respectively by grid-shaped, hollow hexagonal, hollow octagon or open diamonds formed shape.
The web strip width of described grid-shaped is preferably 25～28mm, more preferably 26～27mm; Spacing between the lattice band of described lengths is preferably 25～28mm, more preferably 26～27mm.
The length on the limit of described hollow hexagonal is 28～32mmmm, and width is 8～12mm, more preferably length 29～30mm, width 9～10mm.
The length on described hollow octagonal limit is 16～22mm, and width is 8～12mm, more preferably length 17～19mm, width 9～10mm.
This utility model better can realize with remainder layer causing that electromagnetic energy produces loss owing to the position of incident, reflection, refracted electromagnetic ripple interferes resonance mutually by above-mentioned specific electrically-conducting paint and specific shape, thus reaching the effect of better electromagnetic wave absorption radiation.
The electromagnetic wave absorption board that this utility model provides includes the protection rete being arranged on described resistive layer. In this utility model, described protection rete is preferably formed by one or more in PVC, PE and waterproof paper.
The thickness of protection rete described in the utility model is preferably 0.01～0.2cm, more preferably 0.01～0.05cm, it is most preferred that be 0.01～0.02cm.
The electromagnetic wave absorption board that this utility model provides includes the conductive film layer being arranged on described second paper membrane layer. In this utility model, the sheet resistance resistance of described conductive film layer is preferably 30 Ω/below, more preferably 25 Ω/below, it is most preferred that be 20 Ω/below. Described conductive film layer can be metallic diaphragm, it is also possible to for carbon black or carbon fiber rete. One or more in aluminum film, copper film and ferrum film of described metallic diaphragm.
The thickness of conductive film layer described in the utility model is preferably 0.01～0.2cm, more preferably 0.01～0.05cm, it is most preferred that be 0.01～0.02cm.
In this utility model, the thickness ratio of described plaster composite layer, the first paper membrane layer, the second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer is preferably (1.0～1.1): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2).
The thickness entirety value of above-mentioned plaster composite layer, the first paper membrane layer, the second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer is less than 1.2cm.
The structural representation of the electromagnetic wave absorption board described in one of them technical scheme of this utility model is as it is shown in figure 1, the structural representation of electromagnetic wave absorption board that provides for this utility model of Fig. 1;
Wherein, 1 is protection rete;2 is resistance nethike embrane layer; 3 is the first paper membrane layer; 4 is plaster composite layer; 5 is the second paper membrane layer, and 6 is conductive film layer.
The preparation method that this utility model provides a kind of electromagnetic wave absorption board, including:
First paper membrane and the second paper membrane are coated on plaster composite layer, obtain the first paper membrane layer and the second paper membrane layer;
Electrically-conducting paint is printed onto on the first paper membrane layer, obtains resistance nethike embrane layer;
Protecting film is coated on resistance nethike embrane layer, obtains protection rete;
Conducting film is coated on the second paper membrane layer, obtains conductive film layer.
This utility model for the component of above layers and structure above-mentioned had clearly describe, do not repeat them here.
First first paper membrane and the second paper membrane are coated on plaster composite layer by the preparation method of the electromagnetic wave absorption board that this utility model provides, and obtain the first paper membrane layer and the second paper membrane layer.
The preparation method of plaster composite layer described in the utility model preferably particularly as follows:
Plaster composite layer is obtained after the mixing of basic material, binding agent, reinforcing agent, conductive material, auxiliary agent and water, stirring, injection molding and the demoulding.
This utility model is not defined for described hybrid mode, hybrid mode well known to those skilled in the art.
Stirring described in the utility model is preferably stirred with blender, and described blender is preferably mortar mixer.
The injection mould that described injection molding is conventional is built and is obtained sheet material, and the then demoulding dries and obtains plaster composite layer.
This utility model is not defined for the concrete mode of above-mentioned cladding, cladding mode well known to those skilled in the art.
After obtaining the first paper membrane layer, electrically-conducting paint is printed onto on the first paper membrane layer, obtains resistance nethike embrane layer.
Described electrically-conducting paint is above-mentioned have been had and has clearly described, and does not repeat them here.
Preferably, described printing is silk screen printing, and this utility model is not defined for the concrete mode of above-mentioned silk screen printing, screen printing mode well known to those skilled in the art.
After obtaining the second paper membrane layer, conducting film is coated on the second paper membrane layer, obtains conductive film layer.
This utility model is not defined for the concrete mode of above-mentioned cladding, cladding mode well known to those skilled in the art.
The electromagnetic wave absorption board that this utility model provides includes plaster composite layer, first paper membrane layer, second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer, electromagnetic wave incident is to baffle surface, enter baffle inside through resistance nethike embrane and reach bottom conducting film layer, reflected by the conductive film layer of bottom and resistance nethike embrane roundtrip, due to incidence, reflection, the position of refracted electromagnetic ripple interferes resonance mutually will cause that electromagnetic energy produces loss, thus reaching the effect of good electromagnetic wave absorption radiation, and the selection of the above-mentioned rete of this utility model can be substantially reduced material thickness, the premise at relatively low thickness is made to be issued to the effect of good electromagnetic wave absorption radiation.
The electromagnetic wave absorption board that this utility model prepares is particularly suitable for use as ceiling, can be applicable to universities, middle and primary schools classroom, computer room, stock, security hall, house, bank or hospital etc.; It is relative to existing ceiling, and electromagnetic wave absorption board of the present utility model is low as ceiling thickness, it is good to absorb radiation effect, and cost is low.
The mensuration mode of radiation described in the utility model preferably particularly as follows:
Test instrunment adopts AV3629D vector network analyzer electromagnetic wave test system, carries out test electromaganic wave absorbing property according to flat reflective method.
In order to further illustrate this utility model, below in conjunction with embodiment, electromagnetic wave absorption board that this utility model provides and preparation method thereof is described in detail.
Embodiment 1
Gypsum Fibrosum 100 weight portion, binding agent polyvinyl alcohol 6 weight portion, white cement 6 weight portion, glass fibre 2 weight portion, carbon fiber 0.1 weight portion, dolomite dust 15 weight portion, conductive carbon black 1 weight portion, Pulvis Talci 8 weight portion, starch 4 weight portion, methylcellulose 0.1 weight portion, water 50 weight portion. By above-mentioned raw materials mix homogeneously, being uniformly mixing to obtain mixed slurry with mortar mixer, inject die casting and become sheet material, THICKNESS CONTROL is at 1.1cm, and after sheet material solidifies, the demoulding is drying to obtain gypsum composite board.
Adopt kraft paper to carry out plasterboard upper and lower both sides cladding, prepare into Thistle board;
Thistle board is used above silk screen printing criss-cross resistance responant diaphragm, parameter: lattice bandwidth 26mm, spacing 26mm, film sheet resistance 360 Ω/.
Cladded aluminum foil film below, covers PVC film protection above, obtains electromagnetic wave absorption board. THICKNESS CONTROL is within 1.2cm.
Adopting mode described in the utility model to be measured, result is: assimilation effect is 800MHz～18GHz, and overall absorption is more than 5dB essentially, wherein S band absorption maximum 20dB.
Embodiment 2
100 parts of Gypsum Fibrosum, binding agent polyvinyl alcohol 8 parts, white cement 7 parts, glass fibre 3 parts, carbon fiber 0.2, dolomite dust 16 parts, conductive carbon black 2 parts, Pulvis Talci 9 parts, starch 5 parts, methylcellulose 0.2 part, 50 parts of water. By above-mentioned raw materials mix homogeneously, being uniformly mixing to obtain mixed slurry with mortar mixer, inject die casting and become sheet material, THICKNESS CONTROL is at 1.1cm, and after sheet material solidifies, the demoulding is drying to obtain gypsum composite board.
Adopt kraft paper to carry out plasterboard upper and lower both sides cladding, prepare into Thistle board;
Thistle board is used above silk screen printing criss-cross resistance responant diaphragm, parameter: lattice bandwidth 26mm, spacing 26mm, film sheet resistance 380 Ω/;
Cladded aluminum foil film below, covers PVC film protection above, obtains electromagnetic wave absorption board. After being performed integrally, THICKNESS CONTROL, within 1.2cm, fits like a glove with existing plasterboard specification.
Adopting mode described in the utility model to be measured, result is: assimilation effect is 800MHz 18GHz, and overall absorption is more than 5dB essentially, wherein S band absorption maximum 28dB.
Embodiment 3
100 parts of Gypsum Fibrosum, binding agent polyvinyl alcohol 9 parts, white cement 7 parts, glass fibre 4 parts, carbon fiber 0.25, dolomite dust 18 parts, conductive carbon black 3 parts, Pulvis Talci 10 parts, starch 4 parts, methylcellulose 0.25 part, 50 parts of water. By above-mentioned raw materials mix homogeneously, being uniformly mixing to obtain mixed slurry with mortar mixer, inject die casting and become sheet material, THICKNESS CONTROL is at 1.1cm, and after sheet material solidifies, the demoulding is drying to obtain Gypsum Fibrosum substrate.
Adopt kraft paper to carry out plasterboard upper and lower both sides cladding, prepare into Thistle board;
Thistle board is used above silk screen printing criss-cross resistance responant diaphragm, parameter: lattice bandwidth 26mm, spacing 26mm, film sheet resistance 400 Ω/;
Cladded aluminum foil film below, covers PVC film protection above, obtains electromagnetic wave absorption board. After being performed integrally, THICKNESS CONTROL is within 1.2cm.
Adopting mode described in the utility model to be measured, result is: assimilation effect is 800MHz 18GHz, and overall absorption is more than 5dB essentially, wherein S band absorption maximum 25dB.
The above is only preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. an electromagnetic wave absorption board, including:
Plaster composite layer;
It is respectively arranged at the first paper membrane layer and the second paper membrane layer of plaster composite layer both sides;
Being arranged at the resistance nethike embrane layer on described first paper membrane layer, described resistance nethike embrane layer is formed by electrically-conducting paint;
It is arranged at the protection rete on described resistive layer;
It is arranged at the conductive film layer on described second paper membrane layer.
2. electromagnetic wave absorption board according to claim 1, it is characterised in that the sheet resistance resistance of described resistance nethike embrane layer is 350～420 Ω/.
3. electromagnetic wave absorption board according to claim 1, it is characterised in that described resistance nethike embrane layer be shaped as grid-shaped, hollow hexagonal or hollow octagon.
4. electromagnetic wave absorption board according to claim 1, it is characterised in that the sheet resistance resistance of described conductive film layer is 30 Ω/below.
5. electromagnetic wave absorption board according to claim 1; it is characterized in that, the thickness ratio of described plaster composite layer, the first paper membrane layer, the second paper membrane layer, resistance nethike embrane layer, protection rete and conductive film layer is (1.0～1.1): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2): (0.01～0.2).
6. electromagnetic wave absorption board according to claim 1, it is characterised in that described protection rete is formed by one or more in PVC, PE and waterproof paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945278.6U CN205320456U (en) | 2015-11-24 | 2015-11-24 | Electromagnetic wave absorbs board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520945278.6U CN205320456U (en) | 2015-11-24 | 2015-11-24 | Electromagnetic wave absorbs board |
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| Publication Number | Publication Date |
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| CN205320456U true CN205320456U (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520945278.6U Expired - Fee Related CN205320456U (en) | 2015-11-24 | 2015-11-24 | Electromagnetic wave absorbs board |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105283058A (en) * | 2015-11-24 | 2016-01-27 | 海南大学 | Electromagnetic wave absorbing plate and preparation method thereof |
-
2015
- 2015-11-24 CN CN201520945278.6U patent/CN205320456U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105283058A (en) * | 2015-11-24 | 2016-01-27 | 海南大学 | Electromagnetic wave absorbing plate and preparation method thereof |
| CN105283058B (en) * | 2015-11-24 | 2018-11-02 | 海南大学 | A kind of electromagnetic wave absorption board and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171207 Address after: 570228 Haikou Renmin Road,, Hainan, Hainan University Patentee after: HAINAN University Address before: 570228 Haikou Renmin Road,, Hainan, Hainan University Co-patentee before: HAINAN ZHAOSHENG TECHNOLOGY DEVELOPMENT Co.,Ltd. Patentee before: Hainan University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20211124 |