CN101335120B - Electro-magnetic shielding composite material for audio and video connection signal - Google Patents
Electro-magnetic shielding composite material for audio and video connection signal Download PDFInfo
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- CN101335120B CN101335120B CN2008101445539A CN200810144553A CN101335120B CN 101335120 B CN101335120 B CN 101335120B CN 2008101445539 A CN2008101445539 A CN 2008101445539A CN 200810144553 A CN200810144553 A CN 200810144553A CN 101335120 B CN101335120 B CN 101335120B
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- audio
- composite material
- shielding layer
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- electro
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- 239000002131 composite material Substances 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 15
- 239000004800 polyvinyl chloride Substances 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 7
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000806 elastomer Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 claims description 3
- WDRCVXGINNJWPH-UHFFFAOYSA-N tris(6-methylheptyl) benzene-1,2,4-tricarboxylate Chemical compound CC(C)CCCCCOC(=O)C1=CC=C(C(=O)OCCCCCC(C)C)C(C(=O)OCCCCCC(C)C)=C1 WDRCVXGINNJWPH-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 abstract description 16
- 239000010439 graphite Substances 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000012544 monitoring process Methods 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000003607 modifier Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000314 lubricant Substances 0.000 abstract description 3
- 239000004014 plasticizer Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 3
- 239000004020 conductor Substances 0.000 description 13
- 239000004744 fabric Substances 0.000 description 13
- 230000004888 barrier function Effects 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920006267 polyester film Polymers 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 210000004709 eyebrow Anatomy 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Abstract
The invention relates to an electro-magnetic shielding composite material used for an audio and video connecting signal wire, which comprises the following raw materials according to weight ratio: 50 to 60 of PVC resin, 40 to 50 of plasticizers, 10 to 20 of graphite powders, 2 to 5 of stabilizers, 2 to 3 of lubricants and 1 to 3 of modifiers, wherein, the graphite powders can be nickel-plated and silver-gilt graphite powders. As a PVC graphite composite material is adopted to produce and process a shielding layer to replace an original metal wire woven net shielding layer of an audio connecting signal wire and a first metal wire woven net shielding layer of a video monitoring connecting signal wire, the shielding layer of the invention not only has the advantages of high production efficiency, low production cost, etc., but also has excellent shielding effect.
Description
Technical field:
The present invention relates to a kind of electromagnetic shielding composite material that is used for audio and video connecting signal lines.
Background technology:
Existing audio frequency connects holding wire, and mainly insulating barrier, woven wire cloth screen and the external sheath layer of coating constitute successively from inside to outside by electric conductor and from electric conductor; Existing video connects holding wire, especially video monitoring connects holding wire, and mainly insulating barrier, the first woven wire cloth screen, polyester film separator, the second woven wire cloth screen and the external sheath layer of coating constitute successively from inside to outside by electric conductor and from electric conductor.The main effect of woven wire cloth screen is: (1) constitutes signal circuit as outer conductor with electric conductor; (2) prevent outside electromagnetic interference, guarantee the fidelity transmission of signal source; (3) prevent the transmission signals loss that leaks, improve effective propagation path.In order to improve its antijamming capability and to improve effective propagation path, existing video connects holding wire and all adopts double-level-metal silk mesh grid screen.
No matter be that audio frequency connects holding wire or video connects holding wire, owing to adopt the woven wire cloth screen, therefore have following shortcoming: (1) shield effectiveness is relevant with the density of woven wire cloth, and because of wire braid is netted, shield effectiveness is undesirable; (2) consume a large amount of expensive copper materials, production efficiency is low, production cost height, and the own wt of increase holding wire; (3) because shield effectiveness is undesirable, effective propagation path is shorter, the single-stage signal effective propagation path that for example existing video monitoring connects holding wire is 200 meters to the maximum, the distance of camera and host computer surpasses 200 meters, the centre must be provided with amplifier, this not only increases the expense of material, equipment, also sets up the increase difficulty to installation.
Summary of the invention:
The objective of the invention is to connect the shortcoming of holding wire, provide that a kind of shield effectiveness is good, the signal effective propagation path long and the low electromagnetic shielding composite material that is used for audio and video connecting signal lines of production cost at existing audio frequency, video.
The present invention comprises following weight ratio raw material:
Polyvinyl chloride resin 50-60; Plasticizer 40-50; Graphite powder 10-20; Stabilizer 2-5; Lubricant 2-3; Modifier 1-3.
The present invention, it is the Corvic of TK-1000 that described PVC resin can be selected model for use; Described plasticizer can adopt dioctyl phthalate (DOP) or triisooctyl trimellitate (TOTM); Described graphite powder can be selected nickel plating, silver-plated graphite powder for use, to improve its shield effectiveness; Described stabilizer can adopt the Ca-Zn stabilizer; Described lubricant can adopt positive butyl ester or PE wax; Described modifier can adopt elastomer.
The present invention, owing to adopt PVC graphite composite material production and processing screen, the woven wire cloth screen that replaces original audio frequency connection holding wire is connected the first woven wire cloth screen of holding wire with video monitoring, not only have advantages such as production efficiency height, production cost are low, but also have excellent shield effectiveness.
Description of drawings:
Fig. 1 is the structure principle chart that embodiment 1 audio transmission connects holding wire;
Fig. 2 is the structure principle chart that embodiment 2 video monitorings connect holding wire.
Among the figure, 1, electric conductor 2, insulating barrier 3, PVC graphite composite shielding layer 4, polyester film separator 5, woven wire cloth screen 6, external sheath layer.
Embodiment:
Embodiment 1, audio transmission connect holding wire.
With reference to Fig. 1, this audio transmission connects holding wire, and insulating barrier 2, PVC graphite composite shielding layer 3 and the external sheath layer 6 of coating constitute successively from inside to outside by electric conductor 1 and from electric conductor 1.The formation of described PVC graphite composite shielding layer comprises following raw material (containing the weight multiple): TK-1000 Corvic 60kg; Dioctyl phthalate (DOP) 45kg; Nickel plating, silvering graphite powder (product that can adopt eyebrow depressed place, Xi'an chemical industry Paper Co., Ltd to produce) 18.0kg; Ca-Zn stabilizer 4.0kg; PE wax 2.5kg; Modifier elastomer (TPE) 2.5kg; Described PVC graphite composite shielding layer extrudes common apparatus production through cable, and thickness is 0.20 ± 0.05mm; It is identical that the production method of all the other electric conductors 1, insulating barrier 2 and external sheath layer 6 and technical indicator and existing audio transmission are connected holding wire.
During use, the method for attachment of PVC graphite composite bed is identical with virgin metal silk mesh grid screen.Owing to adopt PVC graphite composite bed as screen, replace the woven wire cloth screen that original audio frequency connects holding wire, not only have advantages such as production efficiency height, production cost be low, but also has excellent shield effectiveness, after testing, every technical indicator arrives or surpasses the technical indicator of existing woven wire cloth screen audio transmission connection holding wire.
With reference to Fig. 2, this video monitoring connects holding wire, and insulating barrier 2, PVC graphite composite shielding layer 3, polyester film separator 4, woven wire cloth screen 5 and the external sheath layer 6 of coating constitute successively from inside to outside by electric conductor 1 and from electric conductor 1.The formation of described PVC graphite composite shielding layer comprises following raw material (containing the weight multiple): TK-1000 Corvic 60kg; Dioctyl phthalate (DOP) 45kg; Nickel plating, silvering graphite powder (product that can adopt eyebrow depressed place, Xi'an chemical industry Paper Co., Ltd to produce) 18kg; Ca-Zn stabilizer 4kg; Positive butyl ester 2.5kg; Modifier elastomer (TPE) 2.5kg, described PVC graphite composite shielding layer extrudes common apparatus production through cable, and thickness is 0.20 ± 0.05mm; It is identical that the production method of all the other electric conductors 1, insulating barrier 2, polyester film separator 4, woven wire cloth screen 5 and external sheath layer 6 and technical indicator and existing video monitoring are connected holding wire.
Owing to adopt PVC graphite composite bed to replace the first metal wire knitted stratum reticulare that the original video monitoring connects holding wire, during use, PVC graphite composite bed is connected from beginning to end with the metal wire knitted stratum reticulare, merge to constitute and mix screen, adopt and mix screen, not only have advantages such as production efficiency height, production cost be low, but also has excellent shield effectiveness, after tested, every technical indicator arrives or surpasses the technical indicator that existing composite wire mesh grid screen video monitoring connects holding wire, and its single-stage signal effective propagation path can reach 400 meters.This video monitoring is connected signal line application monitor in ordinary video, the centre needn't be provided with amplifier, also can reach effect clearly, and this has not only saved the expense of material installation, also sets up to installation and provides convenience.
Claims (1)
1. an electromagnetic shielding composite material that is used for audio and video connecting signal lines is characterized in that: comprise following weight ratio raw material: polyvinyl chloride resin 50-60; Dioctyl phthalate or triisooctyl trimellitate 40-50; Nickel plating, silvering graphite powder 10-20; Ca-Zn stabilizer 2-5; Positive butyl ester or PE wax 2-3; Elastomer TPE 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101445539A CN101335120B (en) | 2008-03-31 | 2008-03-31 | Electro-magnetic shielding composite material for audio and video connection signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101445539A CN101335120B (en) | 2008-03-31 | 2008-03-31 | Electro-magnetic shielding composite material for audio and video connection signal |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100271614A Division CN101252032B (en) | 2008-03-31 | 2008-03-31 | Audio and video connecting signal lines |
Publications (2)
| Publication Number | Publication Date |
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| CN101335120A CN101335120A (en) | 2008-12-31 |
| CN101335120B true CN101335120B (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101445539A Expired - Fee Related CN101335120B (en) | 2008-03-31 | 2008-03-31 | Electro-magnetic shielding composite material for audio and video connection signal |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103012932A (en) * | 2012-12-24 | 2013-04-03 | 揭阳市广福电子实业有限公司 | Electromagnetic shielding synthetic board |
| CN102982877A (en) * | 2012-12-24 | 2013-03-20 | 揭阳市广福电子实业有限公司 | Audio and video signal transmission conduction wire |
| CN103762457B (en) * | 2014-01-23 | 2015-11-18 | 揭阳市广福电子实业有限公司 | A kind of electromagnetic shielding conductive jockey and method |
| CN103772855B (en) * | 2014-01-23 | 2016-02-03 | 揭阳市广福电子实业有限公司 | A kind of matrix material preparing electromagnetic shielding conductive heat-shrink tube |
| KR102612541B1 (en) * | 2016-10-18 | 2023-12-12 | 엘지이노텍 주식회사 | Camera module |
| CN107808722A (en) * | 2017-11-03 | 2018-03-16 | 安徽潜隆机电科技有限公司 | A kind of signal controls the enhanced screen layer of cable |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282714A (en) * | 2000-05-08 | 2001-02-07 | 王钢 | Electrically conductive graphiee ceramics |
| CN101072493A (en) * | 2007-05-22 | 2007-11-14 | 北京理工大学 | Polyethylene composite film for shielding wideband electromagnetic wave and its preparing method |
-
2008
- 2008-03-31 CN CN2008101445539A patent/CN101335120B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282714A (en) * | 2000-05-08 | 2001-02-07 | 王钢 | Electrically conductive graphiee ceramics |
| CN101072493A (en) * | 2007-05-22 | 2007-11-14 | 北京理工大学 | Polyethylene composite film for shielding wideband electromagnetic wave and its preparing method |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2001-261975A 2001.09.26 |
| V.K.SACHDEV等.Pre-localized graphite/polyvinyl chloride composites for electromagnetic interference shielding in the X-band frequency range.Materials Science-Poland.2005,23(1),269-277. * |
| 叶林忠等.电磁屏蔽复合涂层的研究.现代塑料加工应用.2006,18(5),8-10. * |
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| CN101335120A (en) | 2008-12-31 |
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Owner name: JIEYANG GRAND FULL ELECTRONIC INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: XU FUZHANG Effective date: 20130521 |
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Effective date of registration: 20130521 Address after: 522071, Jieyang Province, Dongshan District, Guangdong Province town of Tan Kok Village Patentee after: Jieyang Grand Full Electronic Industrial Co., Ltd. Address before: 522031 Guangdong Province, Jieyang City Dongshan Pandong Tan Kok village Jieyang grandfull Electronic Industrial Co. Ltd. Patentee before: Xu Fuzhang |
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Address after: Pan Dong Zhen Tan Jiao Cun, Jieyang Industrial Park, Jieyang City, Guangdong Province Patentee after: Guangdong Guangfu Electronic Industry Co., Ltd Address before: 522071, Jieyang Province, Dongshan District, Guangdong Province town of Tan Kok Village Patentee before: JIEYANG GRAND FULL ELECTRONIC INDUSTRIAL Co.,Ltd. |
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Granted publication date: 20100804 Termination date: 20210331 |
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