CN103980711B - Directional metal wire-filled anti-EMI silica gel liner and preparation method thereof - Google Patents
Directional metal wire-filled anti-EMI silica gel liner and preparation method thereof Download PDFInfo
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- CN103980711B CN103980711B CN201410162804.1A CN201410162804A CN103980711B CN 103980711 B CN103980711 B CN 103980711B CN 201410162804 A CN201410162804 A CN 201410162804A CN 103980711 B CN103980711 B CN 103980711B
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- tinsel
- silica gel
- orientation
- emi filter
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 239000000741 silica gel Substances 0.000 title claims abstract description 34
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000008119 colloidal silica Substances 0.000 claims abstract description 21
- 239000003292 glue Substances 0.000 claims description 28
- 229910000792 Monel Inorganic materials 0.000 claims description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 239000004411 aluminium Substances 0.000 claims description 25
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 10
- 229910000077 silane Inorganic materials 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 9
- 238000002203 pretreatment Methods 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004531 microgranule Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention provides a directional metal wire-filled anti-EMI silica gel liner and a preparation method thereof. The directional metal wire-filled anti-EMI silica gel liner comprises colloidal silica, and the metal wire is directly and uniformly distributed in the colloidal silica. The provided anti-EMI silica gel liner has high elasticity as common rubber, and has conductive reliability of metal material.
Description
Technical field
The present invention relates to anti-EMI filter technical field, particularly to a kind of anti-EMI filter pad of silica gel of orientation tinsel filling and its
Preparation method.
Background technology
Electromagnetic interference (Electromagnetic Interference abbreviation EMI) refer to electromagnetic wave and electronic component act on and
The interference phenomenon producing, has Conduction Interference and two kinds of radiation interference.Conduction Interference refers to by conducting medium an electric network
On signal coupling (interference) to another electric network.Radiation interference refers to that interference source passes through space and its signal is coupled (interference)
To another electric network.With the development of electronics industry, electromagnetic radiation is ubiquitous, not only affects environment, to health
Produce harm, and had a strong impact on the normal operation of electronic equipment, naval vessel, vehicle etc., various anti-EMI filter shielding materials are exactly to be
The microwave defense material solving electromagnetic interference application and producing.
There is a class anti-EMI filter conductive rubber gasket material, it is the metal adding conduction in silica matrix in shielding material
Microgranule, such as argentum powder, silver-plated copper powder, silvered aluminum powder, silvered glass powder, make through molding sulfuration or extrusion molding, for electronics
Equipment buckle case buckle at shell gap or cover plate flange.There is provided electrically continuous first, thus preventing electromagnetic-wave leakage, electrification
Magnetic seal acts on；Secondly rubber has good water vapor seal effect, can play environment to the circuit of device interior and components and parts
Sealing function, in addition can also be used for being grounded the occasion with static discharge.
, as glue Liner Ferrule powder content is between 60～95%, specific insulation is 10 for this traditional conduction-2～10-3
Between Ω cm, have disadvantages that, as big in hardness, low intensity, permanent deformation is big, conductive particle is oxidizable and cost is high etc..
The reason cause these shortcomings be：
A. contain a large amount of metal powders in rubber, the physical property of rubber is had undesirable effect；
B. conductive particle specific surface area is big, oxidizable, electric conductivity in time environment and reduce；
C. contain substantial amounts of argent, relatively costly.
Content of the invention
For solving above-mentioned the deficiencies in the prior art, the present invention provides a kind of anti-EMI filter pad of silica gel of orientation tinsel filling
And preparation method thereof, not only there is the high resiliency of General Purpose Rubber, also there is the conductive reliability of metal material.
The technical scheme is that and be achieved in that：A kind of anti-EMI filter pad of silica gel of orientation tinsel filling, including silicon
Colloid, described colloidal silica interior orientation is evenly distributed with tinsel.
Wherein it is preferred to, described tinsel is Monel silk or aluminium wire.
Wherein it is preferred to, the string diameter of described Monel silk or aluminium wire is 0.1～0.2mm.
Wherein it is preferred to, described Monel silk or aluminium wire are to be pressed into sine-shaped, sinusoidal Monel silk or aluminium wire.
Wherein it is preferred to, the peak height of described sine-shaped, sinusoidal Monel silk or aluminium wire is 0.05～0.35mm.
A kind of preparation method of the anti-EMI filter pad of silica gel of orientation tinsel filling, it comprises the following steps：
1) tinsel pre-treatment：Silane coupler or titanate coupling agent is used to process surface after tinsel is deoiled；
2) uniform cloth silk：By tinsel uniform winding on rectangular metal frame, the metal frame twining silk and the metal not twining silk
The pressing of frame interval, die cavity external sealant sealing；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding；
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein it is preferred to, in described step 2, the silk density after uniform cloth silk is 140 ± 15/cm2.
Beneficial effects of the present invention：
1. the present invention adds tinsel in silica gel, is bonded in tinsel in rubber with chemical method and is difficult to drop out,
And do not contain noble metal, tinsel content below 10%, due to tinsel amount less it is ensured that liner has good rubbery
Energy.
2. all orientations wiry of the present invention are all vertical with the end face of colloidal silica, conductive reliable.
3. sine-shaped, sinusoidal tinsel, as spring, can make liner have excellent resilience, low compression never becomes
Shape.
4. the pad of silica gel of the present invention is suitable for seriously irregular occasion.
5., it is ensured that being not attached between tinsel in arrangement design wiry, therefore moisture content will not be from a silk to another
On bar silk, product is made to have good humidity resistance, the shortcomings of overcome conventional particles filled-type rubber easy oxidation corrosion, because
This, the moisture resistance having had, it is not connected between tinsel moistureproof to close transmission or " siphon " occurs.
6. can be compatible with many metals and alloy.
7. the pad of silica gel of the present invention can use in large temperature range.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the metal wire structure schematic diagram of the present invention；
Fig. 2 is the profile of the pad of silica gel of the present invention.
In figure, 1. colloidal silica, 2. tinsel.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
A kind of anti-EMI filter pad of silica gel of orientation tinsel filling, including colloidal silica, described colloidal silica interior orientation is uniformly distributed
There is tinsel.
A kind of preparation method of the anti-EMI filter pad of silica gel of orientation tinsel filling, it comprises the following steps：
1) tinsel pre-treatment：Silane coupler or titanate coupling agent is used to process surface after tinsel is deoiled；
2) uniform cloth silk：By tinsel uniform winding on rectangular metal frame, the metal frame twining silk and the metal not twining silk
The pressing of frame interval, die cavity external sealant sealing；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding；
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, it is to clean wire surface with silane coupler or titanate coupling agent in step 1, to remove tinsel table
The dirt in face.
Wherein, in step 2, the silk density after uniform cloth silk is 140 ± 15/cm2.
Wherein, Monel is monel, is the corrosion resistant alloy that a kind of consumption is maximum, purposes is the widest, combination property is splendid.
Embodiment 1
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is Monel silk, and string diameter is 0.15mm, is pressed into sinusoidal song
Linear.
Wherein, the peak height of sine-shaped, sinusoidal Monel silk is 0.2mm.
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) Monel silk pre-treatment：Monel silk is pressed into sinusoidal, after deoiling, processes surface with silane coupler,
Ensure, between tinsel and rubber, there is enough bonding forces；
2) uniform cloth silk：By Monel silk uniform winding on rectangular metal frame, the metal frame twining silk and the metal not twining silk
The pressing of frame interval, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external is close
Sealing sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts cold curing.
5) cut：Various thickness and rubber slab in uniform thickness are cut into according to customer demand, cut direction is perpendicular to row
Silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 140 ± 15/cm2.
Embodiment 2
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is Monel silk, and string diameter is 0.1mm, is pressed into sine curve
Shape.
Wherein, the peak height of sine-shaped, sinusoidal Monel silk is 0.05mm
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) Monel silk pre-treatment：Monel silk is pressed into sinusoidal, after deoiling, processes surface with silane coupler,
Ensure, between tinsel and rubber, there is enough bonding forces；
2) uniform cloth silk：By Monel silk uniform winding on rectangular metal frame, the metal frame twining silk and the metal not twining silk
The pressing of frame interval, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external is close
Sealing sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts cold curing.
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 125/cm2.
Embodiment 3
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is Monel silk, and string diameter is 0.2mm, is pressed into sine curve
Shape.
Wherein, the peak height of sine-shaped, sinusoidal Monel silk is 0.35mm.
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) Monel silk pre-treatment：Monel silk is pressed into sinusoidal, after deoiling, processes surface with silane coupler,
Ensure, between tinsel and rubber, there is enough bonding forces；
2) uniform cloth silk：By Monel silk uniform winding on rectangular metal frame, the metal frame twining silk and the metal not twining silk
The pressing of frame interval, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external is close
Sealing sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts high temperature vulcanized curing process.
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 155/cm2.
Embodiment 4
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is aluminium wire, and string diameter is 0.15mm, is pressed into sine curve
Shape.
Wherein, the peak height of sine-shaped, sinusoidal aluminium wire is 0.20mm.
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) aluminium wire pre-treatment：Aluminium wire is pressed into sinusoidal, after deoiling, processes surface it is ensured that gold with silane coupler
Belong to, between silk and rubber, there is enough bonding forces；
2) uniform cloth silk：By aluminium wire uniform winding on rectangular metal frame, the metal frame twining silk and the metal frame not twining silk
Interval pressing, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external seals
Glue sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts cold curing.
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 140 ± 15/cm2.
Embodiment 5
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is aluminium wire, and string diameter is 0.1mm, is pressed into sinusoidal.
Wherein, the peak height of sine-shaped, sinusoidal aluminium wire is 0.05mm.
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) aluminium wire pre-treatment：Aluminium wire is pressed into sinusoidal, after deoiling, processes surface it is ensured that gold with silane coupler
Belong to, between silk and rubber, there is enough bonding forces；
2) uniform cloth silk：By aluminium wire uniform winding on rectangular metal frame, the metal frame twining silk and the metal frame not twining silk
Interval pressing, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external seals
Glue sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts cold curing.
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 125/cm2.
Embodiment 6
As depicted in figs. 1 and 2, the anti-EMI filter pad of silica gel of a kind of orientation of the present embodiment tinsel filling, including colloidal silica 1,
Described colloidal silica interior orientation is evenly distributed with tinsel 2.Tinsel 2 is aluminium wire, and string diameter is 0.2mm, is pressed into sinusoidal.
Wherein, the peak height of sine-shaped, sinusoidal aluminium wire is 0.35mm.
The preparation method of the anti-EMI filter pad of silica gel of above-mentioned orientation tinsel filling, comprises the following steps：
1) aluminium wire pre-treatment：Aluminium wire is pressed into sinusoidal, after deoiling, processes surface it is ensured that gold with silane coupler
Belong to, between silk and rubber, there is enough bonding forces；
2) uniform cloth silk：By aluminium wire uniform winding on rectangular metal frame, the metal frame twining silk and the metal frame not twining silk
Interval pressing, die cavity external sealant sealing；Interval pressing ensure that the tinsel distance of different layers is certain, and die cavity external seals
Glue sealing ensures that liquid glue will not flow out from the gap between metal frame in follow-up injection process；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in vacuum row's bubble machine and arranges
Bubble；
4) sulfidization molding, in the present embodiment, sulfidization molding adopts high temperature vulcanized curing process.
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
Wherein, in step 2, the silk density after uniform cloth silk is 155/cm2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Tensile strength >=1.8MPa | 2.0 | 2.2 | 1.9 | 2.1 | 2.3 | 2.0 |
| Percentage elongation >=200% | 220 | 240 | 210 | 230 | 250 | 220 |
| Hardness A35 ± 5 | 35 | 32 | 38 | 36 | 34 | 39 |
| Tearing strength >=8Kg/cm | 11 | 12 | 10 | 12 | 13 | 10 |
| Silk 140 ± 15/cm of density2 | 140 | 125 | 155 | 140 | 125 | 155 |
| Shield effectiveness (14KHZ～1GHZ) >=60dB | 70 | 65 | 80 | 60 | 70 | 80 |
As can be seen from the above table, the pad of silica gel of present invention preparation not only remains the original performance of silica gel, and its stretching is strong
Degree, tear strength are higher, and resistivity is 10-2～10-3Between Ω cm, good anti-EMI filter effect can be played.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (5)
1., it is characterised in that including colloidal silica, described colloidal silica is default for a kind of anti-EMI filter pad of silica gel of orientation tinsel filling
To being evenly distributed with tinsel, described tinsel is Monel silk or aluminium wire；Described Monel silk or aluminium wire are to be pressed into sinusoidal song
Linear Monel silk or aluminium wire.
2. a kind of anti-EMI filter pad of silica gel of orientation tinsel filling according to claim 1 is it is characterised in that described
The string diameter of Monel silk or aluminium wire is 0.1～0.2mm.
3. according to claim 2 a kind of orientation tinsel filling anti-EMI filter pad of silica gel it is characterised in that described just
The peak height of the Monel silk of chord curve shape or aluminium wire is 0.05～0.35mm.
4. the preparation method of the anti-EMI filter pad of silica gel of orientation tinsel filling described in a kind of any one of claims 1 to 3, its
It is characterised by, comprise the following steps：
1) tinsel pre-treatment：Silane coupler or titanate coupling agent is used to process surface after tinsel is deoiled；
2) uniform cloth silk：By tinsel uniform winding on rectangular metal frame, between the metal frame twining silk and the metal frame not twining silk
Every pressing, die cavity external sealant sealing；
3) injecting glue：Liquid glue is arranged bubble in blender, then fills membrane cavity, die cavity is placed in row's bubble in vacuum row's bubble machine；
4) sulfidization molding；
5) cut：Cut into the rubber slab of various thickness according to customer demand, cut direction is perpendicular to row silk direction.
5. the preparation method of the anti-EMI filter pad of silica gel of a kind of orientation tinsel filling according to claim 4, its feature exists
In：In described step 2, the silk density after uniform cloth silk is 140 ± 15/cm2.
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| CN201410162804.1A CN103980711B (en) | 2014-04-22 | 2014-04-22 | Directional metal wire-filled anti-EMI silica gel liner and preparation method thereof |
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| CN106976188A (en) * | 2016-01-18 | 2017-07-25 | 深圳市海德讯科技有限公司 | Thermal transfer conducting resinl pads forming method in a kind of high-accuracy mould |
| CN110894359B (en) * | 2019-12-05 | 2022-02-18 | 中国电子科技集团公司第三十三研究所 | Sponge type directional conductive rubber and preparation method thereof |
| CN112908528B (en) * | 2020-12-10 | 2023-02-10 | 睿惢思工业科技（苏州）有限公司 | Conductive foam and manufacturing process thereof |
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| JP3518267B2 (en) * | 1997-08-07 | 2004-04-12 | 住友電装株式会社 | EMI suppression cable |
| CN103571215A (en) * | 2012-07-18 | 2014-02-12 | 天瑞企业股份有限公司 | High thermal conductivity and EMI sheltering high polymer composite material |
| CN103602072A (en) * | 2013-11-29 | 2014-02-26 | 国家电网公司 | Conductive silicone rubber with electromagnetic shielding performance and manufacturing method |
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