CN108034313A - A kind of electromagnetic screen coating and its preparation method and application - Google Patents
A kind of electromagnetic screen coating and its preparation method and application Download PDFInfo
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- CN108034313A CN108034313A CN201711296254.2A CN201711296254A CN108034313A CN 108034313 A CN108034313 A CN 108034313A CN 201711296254 A CN201711296254 A CN 201711296254A CN 108034313 A CN108034313 A CN 108034313A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Abstract
The present invention relates to a kind of shielding coating and its preparation method and application.The shielding coating is by first, second component according to molar ratio (OH)First：(‑NCO)Second=1:1 mixes；Wherein described first component is made by the raw material including following parts by weight：25 55 parts of fluorin modified crylic acid resin, 5 25 parts of elastomeric polyester resins, 20 30 parts of electromagnetic shielding filler, 1.5~4 parts of auxiliary agent and 5~10 parts of mixed solvent；The second component is isocyanates.Gained coating for EMI shielding has conductive and permeance concurrently, and electromagnetic shielding response frequency range is wide；Gained coating for EMI shielding density is smaller, and composite light-weight quantifies developing direction；The coating application is convenient, can brush, spray, roller coat.
Description
Technical field
The present invention relates to a kind of graphene-based electromagnetic screen coating of efficient and light weight used for rail vehicle and preparation method thereof, belong to
Technical field of function materials.
Background technology
Electromagnetic screen coating passes through the reflection to incident electromagnetic wave, absorption and multipath reflection so that incoming electromagnetic wave energy
Significantly reduce, play electromagnetic shielding action.Existing electromagnetic screen coating is mainly electrically-conducting paint, and added electroconductive stuffing is usually
The non-metal powder such as the metal dusts such as gold, silver, copper, nickel and carbon black, graphite.The electric conductivity and chemical stability of bronze and silver powder
It is good, be applied in the critical electronic equipments such as spacecraft, aircraft, ship, but it is expensive, density is larger, large area
Using being restricted.The performance of copper powder and nickel powder is close with silver but oxidizable, and electric conductivity is unstable, the electromagnetic shielding configured
Coating durability is poor.Carbon black, powdered graphite are as conductive filler, its good dispersion is cheap, but electric conductivity is poor.
CN 201510896392.9 discloses a kind of preparation method of coating for EMI shielding, using non-metallic component as application
Object, uses graphene and conductive black as functional stuffing, prepares lightweight, length based on highly conductive graphene functional stuffing
Effect, seriation coating for EMI shielding material, can not only effective hoisting device electromagnetic protection ability, and can meet to equip gently
The demand of quantization, but the coating for EMI shielding is mainly for high-frequency electromagnetic shielding.CN 201010561198.2 discloses a kind of multiple
The composite coating electromagnetic shielding material of coating electromagnetic screen coating and its preparation is closed, the composite coating electromagnetic screen coating includes
Conductive coating with reflection function and the suction ripple coating with absorption function.But the electromagnetic screen coating is made with nickel powder
For conductive filler, using common magnetic powder as magnetic conduction filler, density is very big, and easily aoxidizes and influence coating service life.CN
201611243277.2 disclose a kind of modified graphene electromagnetic screen coating, it includes modified graphene slurry, resin, face and fills out
Material, auxiliary agent and solvent, the modified graphene slurry include the modified graphite being modified using modifying agent to graphene
Alkene, the modifying agent are the organic molecule with big pi bond conjugated structure, and the resin is acrylic resin.But this method institute
Obtain electromagnetic shielding filler and mainly play electrical loss effect, only there is shield effectiveness, the magnetic field shielding of centering low-frequency range to medium-high frequency
Limited efficacy.
The content of the invention
In order to solve the above technical problem, the present invention provides a kind of graphene-based electromagnetic shielding of efficient and light weight used for rail vehicle
Coating and preparation method thereof, by using with the excellent fluorine richness hydroxy of certain elastic polyester resin and weather resistance
Acid resin is base-material, adds ferrite/graphene composite electromagnetic screen filler and a small amount of silver fiber as filler, has coating
Conductive and permeance, so as to improve the capability of electromagnetic shielding of coating.
What the present invention was achieved through the following technical solutions：
A kind of electromagnetic screen coating, by first, second component according to molar ratio (- OH)First：(-NCO)Second=1:1 mixes；
Wherein, first component is made by the raw material including following parts by weight：25-55 parts of fluorocarbon resin, elastomeric polyester resins 5-
25 parts, 20-30 parts of electromagnetic shielding filler, 1.5~4 parts of auxiliary agent, 5~10 parts of mixed solvent；
Second component is selected from isocyanates.
The fluorocarbon resin is a kind of ethene polymers for being grafted fluorine atom；Preferably GK570, polytrifluorochloroethylene/second
Alkenyl ether resin FEVE.It not only has a good weatherability, but also the characteristic with low-surface-energy, and it is good can to assign coating
Stain resistance.
The elastomeric polyester resins are acrylic resin modified for elastic polyester, containing irregular, opposite in its molecular formula
The big polyalcohol of molecular mass and long chain fatty acids；Preferably FTH elastic resins.
The electromagnetic shielding filler is ferrite/graphene composite material, or ferrite/graphene composite material and silver it is fine
The combination of dimension.
Wherein, the ferrite/graphene composite material is its surface covering FeOx/ graphite using melamine sponge as carrier
Alkene；Wherein FeOx accounts for the 5-99% of shielding filler gross mass, and graphene accounts for the 1-95% of shielding filler gross mass.The shielding is filled out
The porosity of material is 65-85%, magnetic saturation intensity 86-95emu/g, coercivity 158-210Oe, and response frequency range is
100kHz-18GHz。
The ferrite/graphene composite material comprises the following steps：
(1) Fe is prepared3+The water dispersion solution of-graphene oxide；
(2) melamine sponge impregnating and Fe is adsorbed3+- graphene oxide solution, drying；
(3) high-temperature process.
Step (1) is specially：Molysite is added in the aqueous dispersions of graphene oxide, control Fe3+Concentration for 5mg/ml~
500mg/ml, preferably 10-200mg/ml.
Wherein, the concentration of the aqueous dispersions of the graphene oxide is 0.5mg/ml~5.0mg/ml, preferably 1.0-
5.0mg/ml, such as 2.0mg/ml.
Wherein, the molysite is selected from Fe (NO3)3、FeCl3、Fe2(SO4)3, one or more in ferric acetate.
In step (2), the dip time is 0.5h~5h, preferably 2-5h.
In step (2), the drying temperature for 50 DEG C~150 DEG C, preferably 80-110 DEG C.
In step (3), by Fe obtained by step (2)3+- graphene oxide/melamine sponge is warming up to 1~20 DEG C/min speed
300 DEG C~1200 DEG C are heat-treated, and grinding screening, obtains FeOx/ graphene electromagnetic shielding fillers；It is preferred that programming rate is 5-
10 DEG C/min, heat treatment temperature is 500-800 DEG C.
One or more of the auxiliary agent in defoamer, levelling agent, dispersant or thixotropic agent；Wherein, defoamer selects
From BYK-530A, BYK110 or moral modest 6800；Levelling agent is selected from BYK-320, EFKA3777 or EFKA-2022；Thixotropic agent is selected from
One or more in polyamide wax, organobentonite or aerosil.
The mixed solvent is by dimethylbenzene, ethyl acetate, cyclohexanone with mass ratio (2.0-5.0)：(1.5-4.0)：(2.5-
6.0) form, preferably 3.5:3:3.5.
The present invention also provides a kind of preparation method of shielding coating, including：
(1) fluorin modified crylic acid resin, elastomeric polyester resins, auxiliary agent are added 2/3 in the mixed solvent and mixed, stirred, delayed
It is slow to add electromagnetic shielding filler, after being uniformly dispersed, 40 μm of fineness is ground to, adds remaining mixed solvent, regulation system viscosity is extremely
800~1000cp, is filtered, and discharging, obtains first component；
(2) first, second component is mixed, stirred evenly, that is, electromagnetic screen coating is made.
The present invention also provides above-mentioned shielding coating in rail vehicle, aircraft, ship or to become electronic equipment in the fields such as electric appliance
On application.
The present invention also provides a kind of electronic equipment, contains coating made from any shielding coatings of claim 1-7.
The present invention has the advantages that：
(1) gained coating for EMI shielding has conductive and permeance concurrently, and electromagnetic shielding response frequency range is wide, in 10kHz-
In the range of 18GHz；
(2) gained coating for EMI shielding density is smaller, and composite light-weight quantifies developing direction；
(3) coating application is convenient, can brush, spray, roller coat.
Brief description of the drawings
Fig. 1 is coating for EMI shielding of the present invention magnetic field shielding efficacy curve in the range of 10kHz-30MHz.
Fig. 2 is coating for EMI shielding of the present invention electric field shielding efficacy curve in the range of 10kHz-30MHz.
Fig. 3 is coating for EMI shielding of the present invention in 10GHz-18GHz electromagnetic field within range shield effectiveness curves.
Embodiment
Following embodiments are used to illustrate the present invention, but are not limited to the scope of the present invention.
A kind of preparation method of ferrite/graphene composite material (electromagnetic shielding filler) of embodiment 1
The present embodiment provides a kind of preparation of ferrite/graphene composite material, including：
(1) Fe (NO are prepared3)3The water dispersion solution of-graphene oxide.
By Fe (NO3)3It is added in the aqueous dispersions for the graphene oxide that concentration is 5mg/ml, prepares Fe (NO3)3Concentration
For the water dispersion solution of 10mg/ml.
(2) melamine sponge impregnating absorption Fe (NO3)3- graphene oxide solution.
By melamine sponge impregnating in Fe (NO3)3Taken out in the water dispersion solution of-graphene oxide after 2h and in 110 DEG C of drying
12h。
(3) high-temperature process prepares efficient and light weight FeOx/ graphene electromagnetic shielding fillers.
By the Fe (NO after drying3)3- graphene oxide/sponge is put into tube furnace, is heated up with 10 DEG C/min programming rates
Heating 3h is carried out to 600 DEG C, then grinding screening, obtains ferrite/graphene composite material.
After testing, the porosity of gained ferrite/graphene composite material is 85%, magnetic saturation intensity 95emu/g, is rectified
Stupid power is 210Oe；Electromagnetic shielding response frequency range is 100kHz-18GHz.
A kind of preparation of 2 electromagnetic screen coating of embodiment
The present embodiment provides a kind of preparation method of shielding coating, including：
(1) by GK570 fluorocarbon resin 30g, FTH elastomeric polyester resins 15g, modest 6800 auxiliary agent 0.5g, BYK110 auxiliary agent of moral
0.5g, EFKA2020 auxiliary agent 0.5g, EFKA3777 auxiliary agent 0.5g add the mixing of 7g in the mixed solvents, and stirring, is slowly added to implement
1 gained electromagnetic shielding filler 30g of example, after being uniformly dispersed, is ground to 40 μm of fineness, adds residue 3g mixed solvents, regulation system
Viscosity filters, discharging, obtains first component to 800~1000cp；
The mixed solvent is made of dimethylbenzene 3.5g, ethyl acetate 3g, cyclohexanone 3.5g.
(2) by first, second component (isocyanates N3390) according to molar ratio (- OH)First：(-NCO)Second=1:1 mixing, stirring are equal
It is even, that is, electromagnetic screen coating is made.
Embodiment 3
The present embodiment provides a kind of preparation method of shielding coating similar to Example 2, wherein first group is differed only in
The formula divided is as follows：
GK570 fluorocarbon resin 25g, FTH elastomeric polyester resins 25g, 6800 auxiliary agent 0.3g, BYK110 auxiliary agent 0.6g,
EFKA2020 auxiliary agent 0.3g, EFKA3777 auxiliary agent 0.6g, mixed solvent 5g, electromagnetic shielding filler 20g.
Embodiment 4
The present embodiment provides a kind of preparation method of shielding coating similar to Example 2, wherein first group is differed only in
The formula divided is as follows：
GK570 fluorocarbon resin 55g, FTH elastomeric polyester resins 5g, 6800 auxiliary agent 0.6g, BYK110 auxiliary agent 0.3g,
EFKA2020 auxiliary agent 0.6g, EFKA3777 auxiliary agent 0.4g, mixed solvent 8g, electromagnetic shielding filler 25g.
Compliance test result
The performance of shielding coating obtained by embodiment 2-4 is detected, it is as a result as follows：
| Coating | Resistivity/Ω .cm | Magnetic saturation intensity/emu/g | Respond frequency range | Coating density/g/m3 |
| Embodiment 2 | 0.05 | 78 | 10KHz-18GHz | 1.8 |
| Embodiment 3 | 2.0 | 21 | 10KHz-18GHz | 1.3 |
| Embodiment 4 | 0.4 | 54 | 10KHz-18GHz | 1.6 |
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
- A kind of 1. shielding coating, by first, second component according to molar ratio (- OH)First：(-NCO)Second=1:1 mixes；Its feature exists In the first component is made by the raw material including following parts by weight：25-55 parts of fluorin modified crylic acid resin, 5-25 parts of bullet Property polyester resin, 20-30 parts of electromagnetic shielding filler, 1.5~4 parts of auxiliary agent and 5~10 parts of mixed solvent；The second component is isocyanates.
- 2. shielding coating according to claim 1, it is characterised in that the fluorocarbon resin is a kind of second for being grafted fluorine atom Alkene polymer；Preferably GK570, polytrifluorochloroethylene/vinyl ether resin FEVE.
- 3. shielding coating according to claim 1 or 2, it is characterised in that the elastomeric polyester resins change for elastic polyester Property acrylic resin, irregular, relative molecular mass is big polyalcohol and long chain fatty acids are contained in its molecular formula；Preferably FTH elastic resins.
- 4. according to any shielding coatings of claim 1-3, it is characterised in that the electromagnetic shielding filler for ferrite/ Graphene composite material, or the combination of ferrite/graphene composite material and silver fiber.
- 5. shielding coating according to claim 4, it is characterised in that the ferrite/graphene composite material is with close Amine sponge is carrier, its surface covers FeOx/ graphenes；Wherein FeOx accounts for the 5-99% of shielding filler gross mass, and graphene accounts for Shield the 1-95% of filler gross mass；The porosity of the shielding filler is 65-85%, magnetic saturation intensity 86-95emu/g, coercivity 158-210Oe, is rung It is 100kHz-18GHz to answer frequency range.
- 6. according to any shielding coatings of claim 1-5, it is characterised in that the auxiliary agent is defoamer, levelling agent, divides One or more in powder or thixotropic agent；Wherein, defoamer is selected from BYK-530A, BYK110 or moral modest 6800；Levelling agent selects From BYK-320, EFKA3777 or EFKA-2022；Thixotropic agent is in polyamide wax, organobentonite or aerosil It is one or more.
- 7. according to any shielding coatings of claim 1-6, it is characterised in that the mixed solvent is by dimethylbenzene, acetic acid Ethyl ester, cyclohexanone are with mass ratio (2.0-5.0)：(1.5-4.0)：(2.5-6.0) is formed, and preferably 3.5:3:3.5.
- 8. the preparation method of any shielding coatings of claim 1-7, it is characterised in that including：(1) fluorin modified crylic acid resin, elastomeric polyester resins, auxiliary agent are added 2/3 in the mixed solvent and mixed, stirring, slowly adds Enter electromagnetic shielding filler, after being uniformly dispersed, be ground to 40 μm of fineness, add remaining mixed solvent, regulation system viscosity to 800~ 1000cp, is filtered, and discharging, obtains first component；(2) first, second component is mixed, stirred evenly, that is, electromagnetic screen coating is made.
- 9. any shielding coatings of claim 1-7 are in rail vehicle, aircraft, ship or become in appliance field on electronic equipment Application.
- 10. a kind of electronic equipment, it is characterised in that contain coating made from any shielding coatings of claim 1-7.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296254.2A CN108034313B (en) | 2017-12-08 | 2017-12-08 | Electromagnetic shielding coating and preparation method and application thereof |
| EP18886004.3A EP3723465B1 (en) | 2017-12-08 | 2018-10-11 | Electromagnetic shielding filler, electromagnetic shielding coating comprising same, preparation method and application thereof |
| US16/765,841 US11441050B2 (en) | 2017-12-08 | 2018-10-11 | Electromagnetic shielding filler, electromagnetic shielding coating comprising the same, preparation method and use thereof |
| PCT/CN2018/109844 WO2019109726A1 (en) | 2017-12-08 | 2018-10-11 | Electromagnetic shielding filler, electromagnetic shielding coating comprising same, preparation method and application thereof |
| SG11202003889SA SG11202003889SA (en) | 2017-12-08 | 2018-10-11 | Electromagnetic shielding filler, electromagnetic shielding coating comprising the same, preparation method and use thereof |
| JP2020519352A JP7123132B2 (en) | 2017-12-08 | 2018-10-11 | Electromagnetic Shielding Filler, Electromagnetic Shielding Coating Containing The Same, and Manufacturing Method and Application Thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296254.2A CN108034313B (en) | 2017-12-08 | 2017-12-08 | Electromagnetic shielding coating and preparation method and application thereof |
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| CN108034313A true CN108034313A (en) | 2018-05-15 |
| CN108034313B CN108034313B (en) | 2020-01-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109726A1 (en) * | 2017-12-08 | 2019-06-13 | 中车青岛四方机车车辆股份有限公司 | Electromagnetic shielding filler, electromagnetic shielding coating comprising same, preparation method and application thereof |
| CN111171699A (en) * | 2019-12-31 | 2020-05-19 | 北京东方雨虹防水技术股份有限公司 | Polyurethane waterproof coating with electromagnetic wave shielding function and preparation method thereof |
| CN111524876A (en) * | 2020-05-06 | 2020-08-11 | 苏州容思恒辉智能科技有限公司 | Semiconductor package with shielding structure and preparation method thereof |
| CN112677833A (en) * | 2021-01-18 | 2021-04-20 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle shielding grounding system, wiring method thereof and rail vehicle |
| CN113004762A (en) * | 2019-12-19 | 2021-06-22 | 洛阳尖端技术研究院 | Electromagnetic shielding coating |
| CN113831131A (en) * | 2021-11-11 | 2021-12-24 | 中南大学 | Carbon foam in-situ growth carbon nanotube composite electromagnetic shielding material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111913A (en) * | 2015-10-08 | 2015-12-02 | 北京理工大学 | Graphene/nano ferrite based water electromagnetic shielding paint and preparation method thereof |
| CN106047129A (en) * | 2016-07-29 | 2016-10-26 | 中车青岛四方机车车辆股份有限公司 | High-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for high-speed train and preparation method |
| CN106397825A (en) * | 2016-09-21 | 2017-02-15 | 江苏盖姆纳米材料科技有限公司 | Graphene-based three-dimensional porous electromagnetic shielding material suitable for high-temperature humid environment |
-
2017
- 2017-12-08 CN CN201711296254.2A patent/CN108034313B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105111913A (en) * | 2015-10-08 | 2015-12-02 | 北京理工大学 | Graphene/nano ferrite based water electromagnetic shielding paint and preparation method thereof |
| CN106047129A (en) * | 2016-07-29 | 2016-10-26 | 中车青岛四方机车车辆股份有限公司 | High-elasticity, wind-sand-resisting, wear-resisting and weather-resisting finishing paint for high-speed train and preparation method |
| CN106397825A (en) * | 2016-09-21 | 2017-02-15 | 江苏盖姆纳米材料科技有限公司 | Graphene-based three-dimensional porous electromagnetic shielding material suitable for high-temperature humid environment |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109726A1 (en) * | 2017-12-08 | 2019-06-13 | 中车青岛四方机车车辆股份有限公司 | Electromagnetic shielding filler, electromagnetic shielding coating comprising same, preparation method and application thereof |
| US11441050B2 (en) | 2017-12-08 | 2022-09-13 | Crrc Qingdao Sifang Co., Ltd. | Electromagnetic shielding filler, electromagnetic shielding coating comprising the same, preparation method and use thereof |
| CN113004762A (en) * | 2019-12-19 | 2021-06-22 | 洛阳尖端技术研究院 | Electromagnetic shielding coating |
| CN111171699A (en) * | 2019-12-31 | 2020-05-19 | 北京东方雨虹防水技术股份有限公司 | Polyurethane waterproof coating with electromagnetic wave shielding function and preparation method thereof |
| CN111171699B (en) * | 2019-12-31 | 2022-01-14 | 北京东方雨虹防水技术股份有限公司 | Polyurethane waterproof coating with electromagnetic wave shielding function and preparation method thereof |
| CN111524876A (en) * | 2020-05-06 | 2020-08-11 | 苏州容思恒辉智能科技有限公司 | Semiconductor package with shielding structure and preparation method thereof |
| CN112677833A (en) * | 2021-01-18 | 2021-04-20 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle shielding grounding system, wiring method thereof and rail vehicle |
| CN112677833B (en) * | 2021-01-18 | 2022-06-03 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle shielding grounding system, wiring method thereof and rail vehicle |
| CN113831131A (en) * | 2021-11-11 | 2021-12-24 | 中南大学 | Carbon foam in-situ growth carbon nanotube composite electromagnetic shielding material and preparation method thereof |
| CN113831131B (en) * | 2021-11-11 | 2022-11-04 | 中南大学 | Carbon foam in-situ growth carbon nanotube composite electromagnetic shielding material and preparation method thereof |
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| Publication number | Publication date |
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| CN108034313B (en) | 2020-01-10 |
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