CN102421277B - Shielding material with aromatic synthetic fibre paper as base material - Google Patents
Shielding material with aromatic synthetic fibre paper as base material Download PDFInfo
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- CN102421277B CN102421277B CN201110225610.8A CN201110225610A CN102421277B CN 102421277 B CN102421277 B CN 102421277B CN 201110225610 A CN201110225610 A CN 201110225610A CN 102421277 B CN102421277 B CN 102421277B
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Abstract
The invention relates to a shielding material, which comprises a base material and a metal material layer, wherein the base material is made of aromatic synthetic fibre paper; and metal or alloy with high electric conductivity is sprayed onto the surface of the base material to form the metal material layer firmly attached to the base material. The shielding material disclosed by the invention has the characteristics of high-temperature and low-temperature resistance, good flexibility, flame resistance, light weight and the like and can achieve a favorable shielding effect.
Description
Technical field
The present invention relates to a kind of shielding material, relate in particular to and comprise the aromatic synthetic fibre paper shielding material of (or claiming aramid fiber paper).
The invention still further relates to the new purposes of aromatic synthetic fibre paper.
Background technology
Along with the development of modern science and technology and improving constantly of living standards of the people, the development that electronic industry and telecommunications are also being advanced by leaps and bounds, increasing electric/electronic device has spread to each corner of society, electromagnetic wave causes simultaneously electromagnetic interference (EMI) and electromagnetic compatibility (EMC) problem are also day by day serious, not only electronic instrument, equipment are caused and disturbs and damage, affecting it normally works, the international competitiveness of serious restriction China's electronic product and equipment, and pollute the environment, harm humans is healthy; Electromagnetic-wave leakage also can cause the valuable informations such as politics, economy, national defence, science and technology to divulge a secret in addition, jeopardizes the safety of national information safety and military vital strategic secrets.Particularly the electromagnetic pulse weapon as new concept weapon makes substantial breakthroughs, can directly hit electronic equipment, electric power system etc., cause temporary transient inefficacy or the permanent damages of information system etc., its delivery mode is various, destructive power is extremely strong, and powerful electromagnetic pulse also can cause damage to human body, make people's neurological disorders, behavior out of control etc.
At present, electromagnetic interference and electromagnetic compatibility problem are all more and more paid attention in countries in the world, have in succession carried out the research to electromagnetic compatibility.Therefore, explore efficient electromagnetic shielding material, prevent electromagnetic interference and electromagnetic compatibility problem that electromagnetic wave causes, for the security reliability that improves electronic product and equipment, promote international competitiveness, prevent the strike of electromagnetic pulse weapon, guarantee safe and smooth the having great importance of information communication system, network system, transmission system, weapon platform etc.In view of the important function of electromagnetic shielding material in social life, economic construction and national defense construction, its research and development more become the important topic that people pay close attention to.
Conventionally with decibel, explain screening effectiveness, the defined formula of screening effectiveness is: SE=20lg (E1/E2) (db).For electromagnetic shielding body structure, its screening effectiveness is also relevant with structure, shape, air-tightness etc., for particular problem, also needs to consider wave frequency, field source character of conductively-closed etc.Affect screening effectiveness and have 3 Fundamentals, the i.e. conductivity of material, magnetic permeability and material thickness.The kind of shielding material is more at present, as conductive rubber, conducting foam, metal, electrically-conducting paint etc.Most of shielding materials are all to using the plastics such as nylon, PP, PE, PET to form as base material plated metal.Nearly all shielding material all can not possess the features such as high-low temperature resistant, pliability is good, fire-retardant, quality is light simultaneously.
Take aramid fiber as material of main part, add aromatic synthetic fibre paper (also claiming aramid fiber synthetic fiber paper, aramid fiber paper) that viscose fibre makes and there is high strength, low distortion, fire-retardant, high-low temperature resistant, resistance to chemical attack, without fatigue reaction and good insulation property, obtain increasingly extensive application because of it.If aramid fiber synthetic fiber paper is made to shielding material as base material plated metal, its high-low temperature resistant, pliability is good, fire-retardant, quality is light etc., and feature will give shielding material better performance.But because the polarity of aramid fiber synthetic fiber paper is low, surface cannot adhesion metal, cannot solve this difficult problem all the time.
Chinese patent application 03112158.6 relates to a kind of preparation method of glass fibre fabric conductive material, it passes through vacuum nickel plating and copper on the basis materials such as glass fabric, net, felt, continuous electroplating nickel, copper, silver or the coat of metal such as golden again, form fire-retardant, resistant to elevated temperatures shielding material, but because fiberglass substrate intensity is low, be difficult for curling folding, limited its application.
Chinese patent application 200710046184.5 relates to the preparation technology of a kind of metal composite fiber or metal composite film, it uses metal or alloy with plasma spraying method, to make fiber or the film of plating at high strength fibre or film surface, and its base material is Kai Fulun fiber or polyester film.
Summary of the invention
One object of the present invention is to provide a kind of and usings aromatic polyamide fiber paper as basic material, the shielding material of its surface spraying metal, and this shielding material has the features such as high-low temperature resistant, pliability is good, fire-retardant, quality is light, can reach good shield effectiveness.
Another object of the present invention is to provide the application of aromatics fibrous paper in preparing shielding material.
A further object of the present invention is to provide the preparation method of the shielding material of above-mentioned aromatics fiber base material.
According to an aspect of the present invention, as the aromatic synthetic fibre paper of shielding material base material can be selected from a position aromatics fiber (1313 fiber) between employing add between the full meta-aramid fibers paper made of position aromatics fibrid (1313 fibrid), or use contraposition aromatics fiber (1414 fiber) to add the full para-aramid fiber paper that contraposition aromatics fibrid (1414 fibrid) is made, also between can using, position aromatics fibrid (1313 fibrid) adds the aramid fiber paper that contraposition aromatics fiber (1414 fiber) is made, or a position aromatics fiber (1313 fiber) adds four kinds of aramid fiber paper of aramid fiber paper that contraposition aromatics fibrid (1414 fibrid) makes as base material.Aromatic synthetic fibre paper, after plasma treatment, at metal or alloy such as its surface spraying nickel, copper, silver, is formed to shielding material of the present invention.
According to a further aspect in the invention, the new purposes of aromatic synthetic fibre paper is provided, base material by aromatic synthetic fibre paper as shielding material, after treatment at its surface spraying metal level, form the high-low temperature resistant of existing aromatic synthetic fibre paper, the feature that fire-retardant, pliability good, quality is light, there is again the material of good shielding action.
In accordance with a further aspect of the present invention, provide the method for preparing shielding material of the present invention, by aromatic synthetic fibre paper after plasma treatment under vacuum state, at one or more layers metal material of its surface spraying.
The invention provides a kind of brand-new aromatic synthetic fibre paper as the shielding material of base material, there is the features such as high-low temperature resistant, pliability is good, fire-retardant, quality is light, can reach good shield effectiveness.
Embodiment
Be more than to general description of the present invention, will to claim of the present invention, be further explained by embodiment below.
Material source:
Aramid 1313 paper: Shenzhen Wu Tian Long Bang composite material Co., Ltd produces, and commodity are called EN.
Fanglun l414 fibrous paper: Shenzhen Wu Tian Long Bang composite material Co., Ltd produces, and commodity are called HKK.
Aramid fiber 1313 fibrid adds 1414 fibrous paper: Shenzhen Wu Tian Long Bang composite material Co., Ltd produces, and commodity are called HEK.
Aramid fiber 1313 adds 1414 fibrid paper: Shenzhen Wu Tian Long Bang composite material Co., Ltd produces, and commodity are called EK.
Preparation method:
One, the metal material of spraying is selected
Select the copper, nickel metal of high conductivity as depositing materials, make the shielding material with good electrical field shield, be wherein not limited to copper, nickel is depositing materials, can also be that gold, silver, aluminium, tin etc. are a kind of, various metals or alloy material.
Two, spraying plating process
Select the high strength aramid fiber paper of 0.04mm～0.13mm as base material, while base material is crossed to stove from plasma spray, enter out, by aramid fiber paper, at the uniform velocity by vacuum furnace, its vacuum degree is 0.1～10p, thereby carries out the positive and negative plasma treatment of base material.Select metal or alloy as blasting materials, be placed on the electrode in furnace chamber, and in furnace chamber, accept spraying plating, under strong magnetic field action, make copper or nickel be plated on aramid fiber paper with ionic state, translational speed 1～4m/min, ion sputtering concentration according to actual needs, is not particularly limited.Can spraying plating one deck, the shielding material such as multilayer or different metal multilayer, now conductance is 0.01 Ω～2.8 Ω, reaches best shield effectiveness completely.
Aramid fiber synthetic fiber paper is plated to the different metals such as nickel, copper, silver in fibrous paper after argon ion is processed under vacuum state, makes shielding material.When making shielding material, by argon ion, processed and reduced aramid paper surface polarity, the contact angle that argon ion was processed after (with plated film condition, not adding metal) comprises over against the paper front of argon ion source and the contact angle (aqueous medium) at the paper back side.Because the type of paper is different, positive, back side contact angle variation differs.Contact angle is less, and material polarity is larger.
[embodiment 1]
By 1313 aramid fiber paper plating copper, nickel under vacuum condition after plasma treatment, table specific as follows:
[embodiment 2]
By 1414 aramid fiber paper plating copper, nickel under vacuum condition after plasma treatment, table specific as follows:
[embodiment 3]
1313 fibrids after plasma treatment are added to 1414 fibrous paper of making plating copper, nickel under vacuum condition, table specific as follows:
[embodiment 4]
Aramid fiber 1313 after plasma treatment is added to the aramid fiber paper that 1414 fibrid paper are made, plating copper, nickel under vacuum condition, table specific as follows:
Shielding material metal attachment fastness is measured: on above-mentioned four kinds of aramid fiber paper, plated after metal, use applying adhesive tape metal surface, tear adhesive tape, the shielding material that the aramid fiber paper of surface spraying metal material forms comes off without metal, and metal level firm attachment is described again.
Material shield effectiveness is measured: general shield effectiveness evaluation sees the following form:
Shield effectiveness is evaluated
Shield effectiveness assay method: detect according to GJB 6190-2008 method, after above-mentioned four kinds of aramid paper platings, more than shield effectiveness all reaches 90db.
Above detailed description of the present invention does not limit the present invention, and those skilled in the art can make according to the present invention various changes and distortion, only otherwise depart from spirit of the present invention, all should belong to the scope of claims of the present invention.
Claims (3)
1. a shielding material, comprise base material and metal material layer, wherein said base material is aromatic synthetic fibre paper, metal or alloy at described substrate surface spraying high conductivity forms firm attachment in the metal material layer of base material, it is characterized in that described base material is for full meta-aramid fibers paper that between choosing freely, position aromatics fiber and a position aromatics fibrid are made, the full para-aramid fiber paper of being made by contraposition aromatics fiber and contraposition aromatics fibrid, the aramid fiber paper of being made by a position aromatics fibrid and contraposition aromatics fiber, with the aramid fiber paper of being made by a position aromatics fiber and contraposition aromatics fibrid,
The metal or alloy of described high conductivity is selected from copper, nickel, silver and gold and alloy thereof.
2. the method for preparation shielding material claimed in claim 1, comprises the steps:
1) under vacuum state, plasma treatment is carried out in the two sides of aromatic synthetic fibre paper base material;
2), by one or more layers metal material of the surface spraying of the aromatic synthetic fibre paper after plasma treatment, form and take the shielding material that aromatic synthetic fibre paper is base material.
3. method claimed in claim 2, the thickness of wherein said aromatic synthetic fibre paper base material is 0.04mm～0.13mm; The vacuum degree of plasma treatment is 0.1～10p, and during spray metal, the translational speed of base material is 1～4m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110225610.8A CN102421277B (en) | 2011-08-08 | 2011-08-08 | Shielding material with aromatic synthetic fibre paper as base material |
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| CN201110225610.8A CN102421277B (en) | 2011-08-08 | 2011-08-08 | Shielding material with aromatic synthetic fibre paper as base material |
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| CN102421277B true CN102421277B (en) | 2014-11-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110331616A (en) * | 2013-09-04 | 2019-10-15 | 杜邦帝人先进纸（日本）有限公司 | Conductive aramid paper and its manufacturing method |
| CN104878593A (en) * | 2015-06-01 | 2015-09-02 | 深圳昊天龙邦复合材料有限公司 | Electromagnetic shielding aramid fiber preparation method and electromagnetic shielding layer |
| CN112512289A (en) * | 2020-11-23 | 2021-03-16 | 江苏展宝新材料有限公司 | Polyaryl oxadiazole shielding film and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444234A (en) * | 2003-04-15 | 2003-09-24 | 夏芝林 | Preparation method of glass fibre fabric conductive material |
| CN101122001A (en) * | 2007-09-20 | 2008-02-13 | 上海南大集团有限公司 | Technique for preparing metal composite fiber or metal composite thin film |
| CN101864631A (en) * | 2010-03-25 | 2010-10-20 | 江阴市海江纱厂有限公司 | Aramid fiber and carbon fiber blended yarn and production method thereof. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008115525A (en) * | 2007-12-27 | 2008-05-22 | Seiren Co Ltd | Method for producing flame-retardant metal-coated fabric |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444234A (en) * | 2003-04-15 | 2003-09-24 | 夏芝林 | Preparation method of glass fibre fabric conductive material |
| CN101122001A (en) * | 2007-09-20 | 2008-02-13 | 上海南大集团有限公司 | Technique for preparing metal composite fiber or metal composite thin film |
| CN101864631A (en) * | 2010-03-25 | 2010-10-20 | 江阴市海江纱厂有限公司 | Aramid fiber and carbon fiber blended yarn and production method thereof. |
Non-Patent Citations (1)
| Title |
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| JP特开2008-115525A 2008.05.22 * |
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Denomination of invention: Shielding material with aromatic synthetic fibre paper as base material Effective date of registration: 20161025 Granted publication date: 20141112 Pledgee: Shenzhen high tech investment and financing Company limited by guarantee Pledgor: Longpont Co., Ltd. Registration number: 2016990000901 |
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Effective date of registration: 20190131 Address after: 341000 Futian Industrial District, Dingnan County Industrial Park, Ganzhou City, Jiangxi Province Patentee after: Ganzhou Longbang Material Technology Co., Ltd. Address before: 518057 Nanshan High-tech Zone, Shenzhen City, Guangdong Province, Phase II of Science and Technology Second Road Software Park, 11 buildings 902 Patentee before: Longpont Co., Ltd. |