CN201533482U - Electromagnetic shielding composite board - Google Patents
Electromagnetic shielding composite board Download PDFInfo
- Publication number
- CN201533482U CN201533482U CN2009202561772U CN200920256177U CN201533482U CN 201533482 U CN201533482 U CN 201533482U CN 2009202561772 U CN2009202561772 U CN 2009202561772U CN 200920256177 U CN200920256177 U CN 200920256177U CN 201533482 U CN201533482 U CN 201533482U
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- shielding
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Abstract
The utility model relates to an electromagnetic shielding composite board which consists of a substrate and a shielding coating composited on the outer side face of the substrate, wherein the shielding coating comprises an electromagnetic wave absorbing coating positioned on the bottom layer and an electromagnetic wave reflecting coating positioned on the surface layer. The reflecting layer can lead a majority of the electromagnetic waves to be reflected, residual electromagnetic waves are absorbed by a wave-absorbing layer and consumed after passing through the reflecting layer, and after the synergetic shielding of the two layers, electromagnetic strength is greatly weakened, thus realizing high-performance electromagnetic shielding effect.
Description
Technical field
The utility model relates to a kind of electromagnetic shielding composite plate that is used for mechano-electronic product electromagnetic shielding.
Background technology
In recent years, the electronic information technology fast development, electronic product has been widely used in the every field of military affairs, industry and family life, simultaneously, the electromagnetic wave of the important carrier of propagating as information has formed complex electromagnetic environments, thereby causes the fail safe of serious electromagnetic interference, electromagnetic information and electromagnetic radiation to harm such as healths.
Technology contents
The purpose of this utility model provides a kind of electromagnetic shielding composite plate, and it has anti electromagnetic wave jamming effectiveness efficiently as the sheathing material of electronics or electromechanical integrated product.
This electromagnetic shielding composite plate is made up of substrate and the curtain coating that is compound on the substrate lateral surface, and said curtain coating comprises the electro-magnetic wave absorption coating that is positioned at bottom and the reflection of electromagnetic wave coating on top layer.
Said electromagnetic absorption layer is to be the dope layer of base-material with ferrite powder and carbonyl iron dust, and said reflector is to be the dope layer of base-material with the silver-coated copper powder.
In this composite plate, being arranged in the superficial layer that is compound in the curtain coating on the substrate lateral surface is the good reflector of conductivity, bigger with the impedance contrast of air, when the external electromagnetic ripple propagates into this composite surface, most of electromagnetic wave is reflected, because of electromagnetic induction phenomenon, produce eddy current effect simultaneously, the part electromagnetic wave is decayed by eddy current loss on the surface in reflector.What be positioned at the curtain coating bottom is the absorption of electromagnetic wave layer of can decaying, residual electricity magnetic wave penetration layer after above-mentioned reflective layer reflects and part decay enters in the absorbed layer, owing to inhale the ripple layer electromagnetic wave is had stronger magnetic loss and electrical loss, this part electromagnetic wave is absorbed also loss and further decay.Therefore, the electro-magnetic screen layer of this composite plate electromagnetic wave to external world has the high-performance electromagnetic shielding effect, through two-layer collaborative shielding, electromagnetism intensity is weakened greatly, realizes the high-performance electromagnetic shielding effect.Therefore, use this electromagnetic shielding composite plate, can improve the electromagnetic protection ability of electromechanical integrated product under complex electromagnetic environment, guarantee that its working stability is reliable, and ensure that operating personnel exempt from the hazard to person that causes because of electromagnetic radiation, and economical and easy.
Description of drawings
Fig. 1 is the cross-sectional view of the structure of electromagnetic shielding composite plate.
Among the figure, 1-reflection of electromagnetic wave coating, 2-electro-magnetic wave absorption coating, 3-substrate.
Embodiment
Further specify the structure of the utility model electromagnetic shielding composite plate below in conjunction with accompanying drawing.
As Fig. 1, substrate 3 as electronic equipment casing is epoxy resin plastics plates, and the upper surface of substrate 3 (being the electronic equipment casing lateral surface) is compounded with coating for EMI shielding, and the bottom of this curtain coating is an electro-magnetic wave absorption coating 2, the top layer be 1, three layer of reflection of electromagnetic wave coating compound be one.
Electro-magnetic wave absorption coating 2 is by being base-material with ferrite powder, carbonyl iron dust and acrylic resin, is added with the coating of the coating II formation of a small amount of titanate coupling agent and xylene solvent.Reflection of electromagnetic wave coating 1 is by being base-material with silver-coated copper powder and acrylic resin, is added with the coating of the coating I formation of a small amount of titanate coupling agent, organobentonite and solvent xylene.When this composite plate was made, brushing paint II behind the airing, formed electromagnetic wave absorbing layer 2 to certain thickness on substrate 3 earlier; Then at the external coating coating I of absorber coatings 2 to certain thickness, form reflection of electromagnetic wave layer 1 behind the airing.
Claims (1)
1. electromagnetic shielding composite plate is characterized in that being made up of substrate and the curtain coating that is compound on the substrate lateral surface, and said curtain coating comprises the electro-magnetic wave absorption coating that is positioned at bottom and the reflection of electromagnetic wave coating on top layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202561772U CN201533482U (en) | 2009-11-18 | 2009-11-18 | Electromagnetic shielding composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202561772U CN201533482U (en) | 2009-11-18 | 2009-11-18 | Electromagnetic shielding composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533482U true CN201533482U (en) | 2010-07-21 |
Family
ID=42528880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202561772U Expired - Fee Related CN201533482U (en) | 2009-11-18 | 2009-11-18 | Electromagnetic shielding composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201533482U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103068212A (en) * | 2011-10-24 | 2013-04-24 | Lg伊诺特有限公司 | Shielding apparatus and wireless power transmission apparatus |
| CN105007704A (en) * | 2014-04-24 | 2015-10-28 | 苏州驭奇材料科技有限公司 | Composite heat-dissipation wave-absorbing film |
| CN106852104A (en) * | 2017-03-24 | 2017-06-13 | 上海源紊新能源科技有限公司 | A kind of electromagnetic shielding car for homework of supplying power |
| CN107708397A (en) * | 2017-10-09 | 2018-02-16 | 丹阳雅奕智能电子技术有限公司 | A kind of conductive anti-shielding material |
| CN109120135A (en) * | 2017-06-24 | 2019-01-01 | 李启飞 | Planetary roller screw Linear magnetic force retarder |
-
2009
- 2009-11-18 CN CN2009202561772U patent/CN201533482U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103068212A (en) * | 2011-10-24 | 2013-04-24 | Lg伊诺特有限公司 | Shielding apparatus and wireless power transmission apparatus |
| EP2587497A3 (en) * | 2011-10-24 | 2014-05-07 | LG Innotek Co., Ltd. | Shielding apparatus and wireless power transmission apparatus |
| TWI552477B (en) * | 2011-10-24 | 2016-10-01 | Ｌｇ伊諾特股份有限公司 | Shielding apparatus and wireless power transmission apparatus |
| US9595381B2 (en) | 2011-10-24 | 2017-03-14 | Lg Innotek Co., Ltd. | Shielding apparatus and wireless power transmission apparatus |
| CN103068212B (en) * | 2011-10-24 | 2017-07-07 | Lg伊诺特有限公司 | Shielding device and wireless power transmission apparatus |
| CN105007704A (en) * | 2014-04-24 | 2015-10-28 | 苏州驭奇材料科技有限公司 | Composite heat-dissipation wave-absorbing film |
| CN106852104A (en) * | 2017-03-24 | 2017-06-13 | 上海源紊新能源科技有限公司 | A kind of electromagnetic shielding car for homework of supplying power |
| CN109120135A (en) * | 2017-06-24 | 2019-01-01 | 李启飞 | Planetary roller screw Linear magnetic force retarder |
| CN107708397A (en) * | 2017-10-09 | 2018-02-16 | 丹阳雅奕智能电子技术有限公司 | A kind of conductive anti-shielding material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20121118 |