CN2079848U - Metallic film-plated glass fiber screening - Google Patents
Metallic film-plated glass fiber screening Download PDFInfo
- Publication number
- CN2079848U CN2079848U CN 90212256 CN90212256U CN2079848U CN 2079848 U CN2079848 U CN 2079848U CN 90212256 CN90212256 CN 90212256 CN 90212256 U CN90212256 U CN 90212256U CN 2079848 U CN2079848 U CN 2079848U
- Authority
- CN
- China
- Prior art keywords
- film
- glass fiber
- plated
- felt
- metallic film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Disclosed is a metallic film-plated glass fiber screening, which belongs to a new anti-electromagnetic interference and anti-electromagnetic leakage felt. The metallic film-plated glass fiber screening is characterized in that because the glass fiber has the advantages of high-temperature resistance, corrosion resistance and fire resistance, the felt is plated with a metal film, according to the requirements, the felt can also be plated with a copper film, a nickel film, a silver film, a copper-nickel composite film, etc. The metallic film-plated glass fiber screening has the advantages of light weight, low price, high-temperature resistance, fire resistance, favorable screening effectiveness, etc. The metallic film-plated glass fiber screening is tested with a standard apparatus, the attenuation is about 60 decibels, and compared with the attenuation of the brass net, the attenuation is increased by 10-20 decibels.
Description
A kind of glass fibre shielding felt of metal-coated membrane belongs to the novel product that a kind of anti electromagnetic wave disturbed and stoped electromagnetic-wave leakage.
In recent years, because the developing rapidly of electronics industry, various electronic equipments grow with each passing day, and the radiation because electronic equipment can generate electromagnetic waves is often disturbed other electronic equipment in the surrounding environment, make their malfunctions; In addition, because electronics irradiation of electromagnetic waves and leakage often cause easily and give away secrets.The tradition electromagnetic wave shielding is to realize by wire netting housing or metal cap mostly, and this is for the electromagnetic wave shielding engineering of building, invests greatlyyer, and effect is also unsatisfactory; For miniaturized electronics, the above-mentioned shielding not only heaviness but also not attractive in appearance that seems.In recent years, the shielding of electronic equipment both at home and abroad, the employing electrically-conducting paint is arranged, be applied to the casting of electronic device inner surface, also have and adopt engineering plastics and copper fiber to make composite plastic, but that the shortcoming of above-mentioned shielding material is a temperature resistant capability is poor, can not be fire-retardant, its course of processing complexity, price are also relatively more expensive.
Task of the present utility model be to utilize glass fibre can heatproof, fire-retardant characteristics on its felt, metal-plated membrane forms glass fibre shielding felt, it has light weight, inexpensive, high temperature resistant, fire-retardant, advantage such as shield effectiveness is good.
This shielding felt structure is as shown in drawings:
1. glass mat, 2. metal film, 3. external protection.
Because glass mat is nonmetallic materials, adopt the technology of autocatalytic plating, that is: under the situation that does not have extrinsic current to pass through, utilize reducing agent that the reduction of solution metal ion is being the body surface of catalytic activity, make it to form metal level.Before plated film, at first glass mat to be given processing through sensitization, activation etc., and then be immersed in the mixed liquor of the metal salt solution that contains complexing agent and suitable reducing agent, make metal at the fiberglass batts surface deposition, form continuous metal film, felt is rendered as the glass fibre shielding felt of the metal-plated membrane with loose structure.Adopting different complexing agents and metallic salt (as: mantoquita, nickel salt, silver salt etc.) can generate different metal film (as: copper film, nickel film, silverskin etc.) also can carry out in two steps, elder generation's copper plating film, back plated nickel film, form copper nickel composite membrane, these are all decided as required, and its thicknesses of layers is 0.1～10 μ.In order to protect metal film, do not make its oxidation, can be compounded with external protection 3. in metal film outside 2., 3. external protection can have, and also can not have, and decides as the case may be.3. external protection can be a kind of in as described below:
The polyvinyl chloride external protection,
The acrylate external protection,
The polyester external protection.
This shielding felt has saves metal, light weight, inexpensive, high temperature resistant, high temperature resistant, corrosion-resistant, fire-retardant, advantage such as shield effectiveness is good, is suitable for making the composite material base such as metope, ceiling, floor of shielded enclosure and the housing sandwich of electronic equipment.
Embodiment: with the glass mat of every square metre 70 grammes per square metre; about 0.7mm is thick for its felt; after giving processing; plating is with copper film, about about 1 μ of its thickness, and appearance composite polrvinyl chloride protective layer; the building electromagnetic wave shielding that has decorative effect in order to making; this shielding felt is tested through reference instrument, decays to about 60 decibels, improves 10～20 decibels than the decay of copper mesh.
Claims (5)
1, a kind of glass fibre of metal-coated membrane shielding felt is characterized in that: 1. go up metal-plated membrane 2. in fiberglass batts.
2, according to the described shielding felt of claim 1., it is characterized in that: 2. can be compounded with external protection 3. in the outside at metal film.
3, according to claim 1,2 described shielding felts, it is characterized in that: 2. metal film can be a kind of in as described below: (A) copper film, (B) nickel film, (C) silverskin, (D) copper-nickel composite membrane.
4, according to claim 1,2 described shielding felts, it is characterized in that: metal film thickness 2. is 0.1～10 μ.
5,, it is characterized in that 3. external protection can be a kind of in as described below: (a) polyvinyl chloride, (b) acrylate, (c) polyester according to the described shielding felt of claim 2..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212256 CN2079848U (en) | 1990-05-19 | 1990-05-19 | Metallic film-plated glass fiber screening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90212256 CN2079848U (en) | 1990-05-19 | 1990-05-19 | Metallic film-plated glass fiber screening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2079848U true CN2079848U (en) | 1991-06-26 |
Family
ID=4891828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90212256 Expired - Lifetime CN2079848U (en) | 1990-05-19 | 1990-05-19 | Metallic film-plated glass fiber screening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2079848U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346003C (en) * | 2002-07-12 | 2007-10-31 | 藤森工业株式会社 | Electromagnetic wave shield material and process for producing the same |
| CN102785445A (en) * | 2012-08-06 | 2012-11-21 | 衡阳星鑫绝缘材料有限公司 | High-temperature heat-insulation electromagnetic shielding fabric and production method thereof |
| CN104363744B (en) * | 2014-12-09 | 2017-07-25 | 成都国蓉科技有限公司 | casing for wireless device |
-
1990
- 1990-05-19 CN CN 90212256 patent/CN2079848U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346003C (en) * | 2002-07-12 | 2007-10-31 | 藤森工业株式会社 | Electromagnetic wave shield material and process for producing the same |
| CN102785445A (en) * | 2012-08-06 | 2012-11-21 | 衡阳星鑫绝缘材料有限公司 | High-temperature heat-insulation electromagnetic shielding fabric and production method thereof |
| CN104363744B (en) * | 2014-12-09 | 2017-07-25 | 成都国蓉科技有限公司 | casing for wireless device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |