CN108198653A - A kind of electromagnetic shielding sheath and preparation method thereof - Google Patents
A kind of electromagnetic shielding sheath and preparation method thereof Download PDFInfo
- Publication number
- CN108198653A CN108198653A CN201810078717.6A CN201810078717A CN108198653A CN 108198653 A CN108198653 A CN 108198653A CN 201810078717 A CN201810078717 A CN 201810078717A CN 108198653 A CN108198653 A CN 108198653A
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- Prior art keywords
- sheath
- electromagnetic shielding
- preparation
- shielding sheath
- restrictive coating
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- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 18
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 14
- 230000011218 segmentation Effects 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 12
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 239000008236 heating water Substances 0.000 claims abstract description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 7
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 7
- 239000006258 conductive agent Substances 0.000 claims description 6
- -1 alkyl phenol Chemical compound 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000006229 carbon black Substances 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 abstract description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 235000019359 magnesium stearate Nutrition 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005119 centrifugation Methods 0.000 description 3
- 230000005670 electromagnetic radiation Effects 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- JXSRRBVHLUJJFC-UHFFFAOYSA-N 7-amino-2-methylsulfanyl-[1,2,4]triazolo[1,5-a]pyrimidine-6-carbonitrile Chemical compound N1=CC(C#N)=C(N)N2N=C(SC)N=C21 JXSRRBVHLUJJFC-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- GWOWVOYJLHSRJJ-UHFFFAOYSA-L cadmium stearate Chemical compound [Cd+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O GWOWVOYJLHSRJJ-UHFFFAOYSA-L 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/227—Pretreatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
- Communication Cables (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention relates to electromangnetic spectrum fields, and in particular to a kind of electromagnetic shielding sheath and preparation method thereof, the preparation method of the electromagnetic shielding sheath include：(1) silica, metal powder and emulsifier are mixed, adds in dispersant, heating water bath simultaneously stirs, and then centrifugal treating, by residue washing, drying, obtains filler mixture；(2) inner restrictive coating will be squeezed out to obtain in filler mixture and polyvinyl resin blanking to sheathing machine；(3) in inner restrictive coating surface spraying electrocondution slurry, electro-magnetic screen layer is formed；(4) by Corvic and ceramic fibre blanking to sheathing machine, external sheath layer is molded on the outside of electro-magnetic screen layer, obtains tubular sheath；(5) it is cut into spiral segmentation line along its length on tubular sheath；Electromagnetic shielding sheath provided by the invention, it is easy to use, it can fast, easily be set on cable to be shielded, meanwhile, which can also facilitate, undamaged dismounting, facilitate the maintenance of cable.
Description
Technical field
The present invention relates to electromangnetic spectrum fields, and in particular to a kind of electromagnetic shielding sheath and preparation method thereof.
Background technology
There are a large amount of harness in electronic equipment of various, are made of one or more cable, play power supply, control,
The functions such as sensing, data transmission, these cables meeting radiated electromagnetic wave, simultaneous transmission of signals in transmission electric current or signal process
It can be interfered by external electromagnetic waves, the most important method for solving electromagnetic radiation and electromagnetic interference is using electromagnetic shielding material
Cable or harness are wrapped up, such material shields heat-shrink tube, shielding tape and shielding shield mainly by shielded cable at present
Set etc., is compared to other shielding materials, and shield sheath is excellent with maintenance easy to use, at low cost, easy, reusable etc.
Point.
Shield sheath is mainly made of insulating layer, shielded layer, ground wire and four part of fastener, and insulating layer mainly plays protection and makees
With mainly being woven or using PVC material with polyester fiber, nylon fiber at present；Shielded layer plays reflection electromagnetic wave to reach
To the purpose for inhibiting electromagnetic radiation and electromagnetic interference；Fastener is used for the installation of shield sheath, and sheath both sides are connected, are rolled into pipe
Shape uses self-thread gluing, snap-fastener, slide fastener, double faced adhesive tape or other fasteners.
Shield sheath of the prior art also needs to be attached installation by fastener, reduce shield sheath installation and
The efficiency of dismounting.
Invention content
For the problems of the prior art, the purpose of the present invention is to provide a kind of preparation method for being electromagnetically shielded sheath,
The electromagnetic shielding sheath being prepared has the advantages of easy for installation, applied widely.
To achieve these goals, the present invention is achieved by the following scheme：
A kind of preparation method for being electromagnetically shielded sheath, includes the following steps：
(1) silica, metal powder and emulsifier are mixed, adds in dispersant, heating water bath simultaneously stirs 30~40min
Centrifugal treating afterwards by residue washing, drying, obtains filler mixture；
(2) it will be squeezed out in the filler mixture in step (1) and polyvinyl resin blanking to sheathing machine and obtain interior shield
Jacket layer；
(3) in the inner restrictive coating surface spraying electrocondution slurry of step (2), the electromagnetic shielding that thickness is 0.5~2mm is formed
Layer；
(4) by Corvic and ceramic fibre blanking to sheathing machine, outside the electro-magnetic screen layer of step (3)
Side is molded external sheath layer, obtains tubular sheath；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
In the present invention, by being cut into spiral segmentation line along its length on tubular sheath, in specifically used process
In, using the center line of tubular sheath as rotary shaft, along the backwards rotation of the formation steering of spiral segmentation line, make at spiral segmentation line
It opens, cable to be shielded is coated, in this way, the electromagnetic shielding sheath, which can easily cover, is set to cable or line to be shielded
Shu Shang improves the installation effectiveness of electromagnetic shielding sheath.
In order to ensure the installation effectiveness of heretofore described electromagnetic shielding sheath, as preference, the spiral point
Secant is equidistant separation.
Electromagnetic shielding sheath of the present invention, includes inner restrictive coating, electro-magnetic screen layer, oversheath successively from inside to outside
Layer.Wherein, the inner restrictive coating is using polyvinyl resin as carrier, the mixed powder filled with silica and metal powder formation
Body；By the silica and filling of the metal powder in inner restrictive coating, the heat dissipation performance of inner restrictive coating is improved, avoids being wrapped
There is heat and scatters and disappears to lead to the aging of cable plastic layer, the service life so as to shorten cable not in time in the cable covered.In order to solve two
Silica and metal powder are easy to reunite in polyvinyl resin, deposit the problem of bad dispersibility, and the present invention is by silica
It is mixed with metal powder with emulsifier, then adds in dispersant, heated and stir under water bath condition, then carry out centrifugal treating
It is and dry so that silica and metal powder outer cladding emulsifier, so as to improve its dispersion effect in polyvinyl resin.
In the present invention, the metal powder can select the metal powder with excellent heat conducting performance, consider its use
Cost, the metal powder can be selected from copper powder, aluminium powder, silver powder, or combination.
The effect of the emulsifier is to be coated on the surface of silica and metal powder, improves its dispersibility, make
To be preferred, the emulsifier is alkyl phenol polyoxyethylene ether or octyl phenol polyoxyethylene ether.
In the present invention, the effect of dispersant is to improve the dispersion effect of silica and metal powder, as preference,
The dispersant is one or more in magnesium stearate, cadmium stearate and copper stearate.
In order to make heretofore described inner restrictive coating that there is the excellent capacity of heat transmission, as preference, the interior shield
Jacket layer includes the substance of following parts by weight：80~96 parts by weight of polyvinyl resin, 3~8 parts by weight of silica, metal powder 5
~10 parts by weight.
In order to obtain the effect of electromagnetic shielding, the electro-magnetic screen layer of electromagnetic shielding sheath of the present invention is in inner sheath
The surface spraying electrocondution slurry of layer, forming certain thickness has the conductive layer of electromagnetic shielding capability, as preference, in the present invention
The electrocondution slurry includes binding agent and conductive agent mixes, wherein, the binding agent is Kynoar, described
Conductive agent is carbon black or carbon nanotube, it is further preferred that the electrocondution slurry includes the substance of following parts by weight：Binding agent
5~10 parts by weight, 22~30 parts by weight of conductive agent.
Charge is formed in the present invention, between the conductive agent in the metal powder and electrocondution slurry that add in inner restrictive coating to pass
The bridge passed, improves conductive capability, it is ensured that better electrostatic shield effect.
In order to obtain the external sheath layer with mechanical strength, in the matrix resin of external sheath layer, i.e. Corvic
Middle addition ceramic fibre, as preference, the external sheath layer includes the substance of following parts by weight：Corvic 75~
90 parts by weight, 5~10 parts by weight of ceramic fibre.
The present invention also provides a kind of electromagnetic shielding sheaths, are prepared by the preparation method of above-mentioned electromagnetic shielding sheath.
The present invention has following technique effect：
The preparation method of electromagnetic shielding sheath provided by the invention, the electromagnetic shielding sheath being prepared can be realized effectively
Electromagnetic shielding after being coated to cable, avoids cable from being influenced by external electromagnetic radiation or caused to extraneous electronic equipment
It influences, improves the reliability of electronic device works.
Electromagnetic shielding sheath provided by the invention, it is easy to use, it can fast, easily be set on cable to be shielded, together
When, which can also facilitate, undamaged dismounting, facilitate the maintenance of cable.
By the design to inner restrictive coating, the capacity of heat transmission of inner restrictive coating is effectively improved, avoids the cable to be shielded of internal layer
There is heat aggregation and the aging of cable is caused to be accelerated in line, meanwhile, this plays the filler of conductive force and is arranged on inner restrictive coating
The electro-magnetic screen layer in outside coordinates jointly, and electrostatic charge is quickly discharged, improves conductive capability, it is ensured that better electrostatic screen
Effect.
Description of the drawings
Fig. 1 is the sectional view that sheath is electromagnetically shielded in the present invention；
Fig. 2 is the schematic diagram of electromagnetic shielding sheath provided by the invention；
Figure label explanation：1- inner restrictive coatings, 2- electro-magnetic screen layers, 3- external sheath layers, 4- spiral segmentation lines.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating and embodiment, and the present invention is furture elucidated.
With reference to shown in Fig. 1,2, electromagnetic shielding sheath provided by the invention includes from inside to outside molding inner restrictive coating successively
1st, electro-magnetic screen layer 2, external sheath layer 3 and it is cut into spiral segmentation line 4 along the electromagnetic shielding length direction.
In the present invention, the preparation method for being electromagnetically shielded sheath includes the following steps：
(1) silica, metal powder and emulsifier are mixed, adds in dispersant, heating water bath simultaneously stirs 30~40min
Centrifugal treating afterwards by residue washing, drying, obtains filler mixture；
(2) it will be squeezed out in the filler mixture in step (1) and polyvinyl resin blanking to sheathing machine and obtain interior shield
Jacket layer；
(3) in the inner restrictive coating surface spraying electrocondution slurry of step (2), the electromagnetic shielding that thickness is 0.5~2mm is formed
Layer；
(4) by Corvic and ceramic fibre blanking to sheathing machine, outside the electro-magnetic screen layer of step (3)
Side is molded external sheath layer, obtains tubular sheath；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
When specifically used, with reference to schematic diagram shown in Fig. 2, using the center line of tubular sheath as rotary shaft, along spiral point
The backwards rotation that the formation of secant turns to makes to open at spiral segmentation line, cable to be shielded is coated, it should be explained that,
The diameter of the cable to be shielded is treated no more than the internal diameter of the electromagnetic shielding sheath in this way, guaranteeing effectively to coat
The cable of shielding avoids cable from exposing not realizing good effectiveness.
Advantages of the present invention is made further instructions below by way of specific embodiment：
Embodiment 1
A kind of preparation method for being electromagnetically shielded sheath：
(1) silica of 5kg is weighed (purchased from Lian Jie silicon materials Co., Ltd of Foshan City, ultra-fine 2 type silica, grain
Diameter is 2 μm), the copper powder of 8kg (electrolytic copper powder of Co., Ltd's production, mesh number 300 are sprayed purchased from the prosperous shield alloy wlding in Nangong City
Mesh) and alkyl phenol polyoxyethylene ether (purchased from the prosperous blue star Science and Technology Ltd. in Xingtai, trade mark OP-4) mixing, add in magnesium stearate
(magnesium stearate for being purchased from triumphant Xiang Chemical Manufacture), heats under 75 DEG C of water-bath and stirs 35min, centrifugal treating, centrifugal condition
For centrifugal rotational speed 200r/s, centrifugation time 8min will obtain filler mixture after residue washing, drying process；
(2) polyvinyl resin for weighing 85kg (is purchased from Maoming Petrochemical, high-density polyethylene resin, the trade mark is
DFDA8916), claimed in blanking to sheathing machine by weightlessness with the filler mixture in step (1), squeezed after melting, being kneaded
Go out to obtain inner restrictive coating；
(3) electrocondution slurry is prepared：By the Kynoar (purchased from U.S. 3M, the trade mark 6008) of 8kg and the carbon black of 26kg
(purchased from the conductive black that Xinxiang City and Lve Lida power materials Co., Ltd produce, trade mark Hiblack-4010) mixing is equal
It is even, electrocondution slurry is prepared, by the electrocondution slurry even application to the surface of the inner restrictive coating of step (2), forming thickness is
The electro-magnetic screen layer of 1.5mm；
(4) by the Corvic of 82kg (purchased from Qilu Petrochemical, trade mark s-700) and 8kg ceramic fibres (purchased from strange
Du's thermal Ceramics fiber loose wool of resistance to association fibre (Suzhou) Co., Ltd production) claim in blanking to sheathing machine through weightlessness,
Molding external sheath layer, obtains tubular sheath on the outside of the electro-magnetic screen layer of step (3)；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
Embodiment 2
A kind of preparation method for being electromagnetically shielded sheath：
(1) silica of 3kg is weighed (purchased from Lian Jie silicon materials Co., Ltd of Foshan City, ultra-fine 2 type silica, grain
Diameter is 2 μm), the silver powder of 5kg and alkyl phenol polyoxyethylene ether it is mixed (purchased from the prosperous blue star Science and Technology Ltd. in Xingtai, trade mark OP-4)
It closes, adds in magnesium stearate (magnesium stearate for being purchased from triumphant Xiang Chemical Manufacture), heated under 75 DEG C of water-bath and stir 30min, from
Heart processing, centrifugal condition is centrifugal rotational speed 200r/s, centrifugation time 5min, is mixed filler is obtained after residue washing, drying process
Close object；
(2) polyvinyl resin for weighing 80kg (is purchased from Maoming Petrochemical, high-density polyethylene resin, the trade mark is
DFDA8916), claimed in blanking to sheathing machine by weightlessness with the filler mixture in step (1), squeezed after melting, being kneaded
Go out to obtain inner restrictive coating；
(3) electrocondution slurry is prepared：By the Kynoar (purchased from U.S. 3M, the trade mark 6008) of 5kg and the carbon black of 22kg
(purchased from the conductive black that Xinxiang City and Lve Lida power materials Co., Ltd produce, trade mark Hiblack-4010) mixing is equal
It is even, electrocondution slurry is prepared, by the electrocondution slurry even application to the surface of the inner restrictive coating of step (2), forming thickness is
The electro-magnetic screen layer of 0.5mm；
(4) by the Corvic of 75kg (purchased from Qilu Petrochemical, trade mark s-700) and 5kg ceramic fibres (purchased from strange
Du's thermal Ceramics fiber loose wool of resistance to association fibre (Suzhou) Co., Ltd production) claim in blanking to sheathing machine through weightlessness,
Molding external sheath layer, obtains tubular sheath on the outside of the electro-magnetic screen layer of step (3)；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
Embodiment 3
A kind of preparation method for being electromagnetically shielded sheath：
(1) silica of 8kg is weighed (purchased from Lian Jie silicon materials Co., Ltd of Foshan City, ultra-fine 2 type silica, grain
Diameter is 2 μm), the aluminium powder of 10kg and alkyl phenol polyoxyethylene ether (purchased from the prosperous blue star Science and Technology Ltd. in Xingtai, trade mark OP-4)
Mixing adds in magnesium stearate (magnesium stearate for being purchased from triumphant Xiang Chemical Manufacture), is heated under 75 DEG C of water-bath and stir 40min,
Centrifugal treating, centrifugal condition are centrifugal rotational speed 300r/s, centrifugation time 10min, will be filled out after residue washing, drying process
Expect mixture；
(2) polyvinyl resin for weighing 96kg (is purchased from Maoming Petrochemical, high-density polyethylene resin, the trade mark is
DFDA8916), claimed in blanking to sheathing machine by weightlessness with the filler mixture in step (1), squeezed after melting, being kneaded
Go out to obtain inner restrictive coating；
(3) electrocondution slurry is prepared：By the Kynoar (purchased from U.S. 3M, the trade mark 6008) of 10kg and the carbon black of 30kg
(purchased from the conductive black that Xinxiang City and Lve Lida power materials Co., Ltd produce, trade mark Hiblack-4010) mixing is equal
It is even, electrocondution slurry is prepared, by the electrocondution slurry even application to the surface of the inner restrictive coating of step (2), forming thickness is
The electro-magnetic screen layer of 2mm；
(4) Corvic of 90kg (purchased from Qilu Petrochemical, trade mark s-700) and 10kg ceramic fibres (are purchased from
Du's thermal Ceramics fiber loose wool of strange resistance to association fibre (Suzhou) Co., Ltd production) claim in blanking to sheathing machine through weightlessness,
Molding external sheath layer, obtains tubular sheath on the outside of the electro-magnetic screen layer of step (3)；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
Electromagnetic shielding sheath provided by the invention, it is easy to install and use, unit cable line can not only be suitble to, moreover it is possible to be suitble to collection
The cable aggregate of pencil avoids influence or impacted to extraneous electronic equipment that cable is radiated by external electromagnetic.
By the improvement to being electromagnetically shielded sheath inner restrictive coating, the heat conductivility of inner restrictive coating is improved, avoids being shielded
The heat aggregation of cable causes the reduction of cable service life.
Basic principle, main feature and the features of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (5)
1. a kind of preparation method for being electromagnetically shielded sheath, it is characterised in that：Include the following steps：
(1) by silica, metal powder and emulsifier mix, add in dispersant, heating water bath and stir 30~40min after from
Heart processing, by residue washing, drying, obtains filler mixture；
(2) it will be squeezed out in the filler mixture in step (1) and polyvinyl resin blanking to sheathing machine and obtain inner restrictive coating；
(3) in the inner restrictive coating surface spraying electrocondution slurry of step (2), the electro-magnetic screen layer that thickness is 0.5~2mm is formed；
(4) by Corvic and ceramic fibre blanking to sheathing machine, on the outside of the electro-magnetic screen layer of step (3) into
Type external sheath layer, obtains tubular sheath；
(5) spiral segmentation line is cut into along its length on tubular sheath to get the electromagnetic shielding sheath.
2. the preparation method of electromagnetic shielding sheath according to claim 1, it is characterised in that：The spiral segmentation line is
Equidistant separation.
3. the preparation method of electromagnetic shielding sheath according to claim 1, it is characterised in that：The metal powder is selected from
Copper powder, aluminium powder, silver powder, or combination；
And/or the emulsifier is alkyl phenol polyoxyethylene ether or octyl phenol polyoxyethylene ether.
4. the preparation method of electromagnetic shielding sheath according to claim 1, it is characterised in that：The electrocondution slurry includes
Binding agent and conductive agent mix, wherein, the binding agent is Kynoar, and the conductive agent is received for carbon black or carbon
Mitron.
5. a kind of electromagnetic shielding sheath, it is characterised in that：The shield sheath is as described in Claims 1 to 4 any one
The preparation method of electromagnetic shielding sheath is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810078717.6A CN108198653B (en) | 2018-01-26 | 2018-01-26 | Electromagnetic shielding sheath and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810078717.6A CN108198653B (en) | 2018-01-26 | 2018-01-26 | Electromagnetic shielding sheath and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108198653A true CN108198653A (en) | 2018-06-22 |
| CN108198653B CN108198653B (en) | 2020-08-14 |
Family
ID=62591365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810078717.6A Active CN108198653B (en) | 2018-01-26 | 2018-01-26 | Electromagnetic shielding sheath and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108198653B (en) |
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| CN108198653B (en) | 2020-08-14 |
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