CN205134069U - Electromagnetic shielding cloth - Google Patents
Electromagnetic shielding cloth Download PDFInfo
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- CN205134069U CN205134069U CN201520910222.7U CN201520910222U CN205134069U CN 205134069 U CN205134069 U CN 205134069U CN 201520910222 U CN201520910222 U CN 201520910222U CN 205134069 U CN205134069 U CN 205134069U
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- thermoplastic polyurethane
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- polyurethane slurry
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- electromagnetic shielding
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Abstract
The utility model provides an electromagnetic shielding cloth, characterized by includes nanometer electromagnetic shield particle (1), thermoplastic polyurethane thick liquids shielding layer (2), fabric 3 and thermoplastic polyurethane thick liquids surface course (4), contain nanometer electromagnetic shield particle (1) in the thermoplastic polyurethane thick liquids shielding layer (2), thermoplastic polyurethane thick liquids shielding layer (2) covers on fabric (3) surface, and the coating is gone up to thermoplastic polyurethane thick liquids shielding layer (2) has thermoplastic polyurethane thick liquids surface course (4). The utility model discloses an electromagnetic shield polyurethane film weaving cloth has excellent electromagnetic shield effect, and water -fastly water, the pliability is good, long service life.
Description
Technical field
The utility model relates to dress materials field, especially a kind of electromagnetic shield cloth.
Background technology
Along with electrical equipment application increasingly extensive, electromagnetic radiation has become a kind of pollution newly, and human body is chronically exposed in electromagnetic radiation environment, nervous system, cardiovascular system, internal system, and appreciation system etc. all can be subject to injury in various degree.Be not subject to for protection human body or be subject to the harm of electromagnetic radiation as far as possible less, people shield electromagnetic radiation source on the one hand, and reduce amount of radiation, on the other hand, have developed effective protective materials and carry out personal protection, electromagnetic radiation fabric is one of them.
At present, develop the fabric with electro-magnetic screen function and mainly contain two kinds of approach: one is fibre metal BLENDED FABRIC.Two is the coatings in fabric listing price with electromagnetic wave shielding performance.
Utilize the electromagnetic wave shielding of metal by metal and fibers mixture, then woven into fabric, its electromagnetic shielding rate is high, and singly because the ratio of metal fibre is great, the fabric be made into is thick and heavy, and wiriness, also there is stimulation to skin.
Fabric applies the electromagnetic shielding benefit fabrics feel soft that coating material obtains, and effectiveness is good, and the coat of metal of employing is generally copper, nickel or corronil, but the coat of metal not wash resistant, effectiveness degradation after repeatedly washing.
Utility model content
The purpose of this utility model is to provide a kind of electromagnetic shield cloth and preparation method thereof, to overcome existing defect.
The technical solution of the utility model is:
A kind of electromagnetic shield cloth, comprise nano electromagnetic shielding particle 1, thermoplastic polyurethane slurry screen layer 2, fabric 3 and thermoplastic polyurethane slurry surface layer 4, containing nano electromagnetic shielding particle 1 in described thermoplastic polyurethane slurry screen layer 2, thermoplastic polyurethane slurry screen layer 2 covers fabric 3 surface, thermoplastic polyurethane slurry screen layer 2 is coated with thermoplastic polyurethane slurry surface layer 4.
The composite electromagnetic screen particle that described nano electromagnetic shielding particle 1 is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Described CNT is the CNT through acidification, or the CNT of plating nickel on surface; Described Graphene is graphene oxide, or the Graphene after graphene oxide reduction.
Described nano electromagnetic shielding material and thermoplastic polyurethane slurry form the thermoplastic polyurethane slurry with electro-magnetic screen function, and the mass fraction of electromagnetic shielding material used is 5% ~ 25%.
Described nano electromagnetic shielding material ultrasonic disperse, at N, forms slurry in N '-dimethyl formamide solvent, and nano electromagnetic shielding material mass fraction is in a solvent 10% ~ 50%.
Described nano electromagnetic shielding material and thermoplastic polyurethane slurry Homogeneous phase mixing liquid roller coat or knife coating coat fabric face, and after drying, coating layer thickness is 0.4mm-2.0mm.
After described nano electromagnetic shielding material and thermoplastic polyurethane mixed slurry are spread evenly across fabric face film forming, coating one deck thermoplastic polyurethane slurry, after drying, its coating layer thickness is 0.04mm-0.08mm.
The preparation method of a kind of electromagnetic shield cloth according to claim 3, is characterized in that the composite coating formed at described fabric face has electromagnetic shielding effect, and in 1 ~ 20GHz, the electromagnetic shielding value SE of this electromagnetic shield cloth is 25dB-80dB.
The beneficial effects of the utility model are:
The utility model adopts multilayer polyurethane coating and fabric tightness to fit, and the polyurethane containing nano electromagnetic shielding provides good effectiveness, and pure layer of polyurethane then plays a protective role, and is that this woven fabric intensity height is warping strength.
Electromagnetic shield cloth of the present utility model and preparation method thereof, can be used for the preparation of various high-quality electromagnetic shielding dress ornament and space suit.The electromagnetic shielding rate of this electromagnetic shielding polyurethane textile cloth, up to more than 90db, has the advantages that intensity is high, warping strength, the life-span is long.
Electromagnetic shielding polyurethane film woven fabric of the present utility model has excellent effectiveness, and water-fastly to water, pliability is good, long service life.
Accompanying drawing explanation
Fig. 1 is cross section structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1, as Fig. 1, a kind of electromagnetic shield cloth, comprise nano electromagnetic shielding particle 1, thermoplastic polyurethane slurry screen layer 2, fabric 3 and thermoplastic polyurethane slurry surface layer 4, containing nano electromagnetic shielding particle 1 in described thermoplastic polyurethane slurry screen layer 2, thermoplastic polyurethane slurry screen layer 2 covers fabric 3 surface, thermoplastic polyurethane slurry screen layer 2 is coated with thermoplastic polyurethane slurry surface layer 4.
The composite electromagnetic screen particle that described nano electromagnetic shielding particle 1 is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Embodiment 2, a kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Described CNT is the CNT through acidification, or the CNT of plating nickel on surface; Described Graphene is graphene oxide, or the Graphene after graphene oxide reduction.
Described nano electromagnetic shielding material and thermoplastic polyurethane slurry form the thermoplastic polyurethane slurry with electro-magnetic screen function, and the mass fraction of electromagnetic shielding material used is 5% ~ 25%.
Described nano electromagnetic shielding material ultrasonic disperse, at N, forms slurry in N '-dimethyl formamide solvent, and nano electromagnetic shielding material mass fraction is in a solvent 10% ~ 50%.
Described nano electromagnetic shielding material and thermoplastic polyurethane slurry Homogeneous phase mixing liquid roller coat or knife coating coat fabric face, and after drying, coating layer thickness is 0.4mm-2.0mm.
After described nano electromagnetic shielding material and thermoplastic polyurethane mixed slurry are spread evenly across fabric face film forming, coating one deck thermoplastic polyurethane slurry, after drying, its coating layer thickness is 0.04mm-0.08mm.
The preparation method of a kind of electromagnetic shield cloth according to claim 3, is characterized in that the composite coating formed at described fabric face has electromagnetic shielding effect, and in 1 ~ 20GHz, the electromagnetic shielding value SE of this electromagnetic shield cloth is 25dB-80dB.
In example, CNT mass fraction is in the coating 10% ± 2%, and the mass fraction of Graphene is 3% ~ 5%;
CNT forms network structure and conductive in Polyurethane Thermoplastic Elastomer rubber TPU coating after uniform and stable dispersion, in conjunction with the characteristic of Graphene, Graphene is introduced in the network architecture of CNT, form nano electromagnetic shielding compound system, improve the electric conductivity of CNT, add the electromagnetic shielding action of Graphene, electromagnetic absorption loss is added.On the other hand, the use of compound system can reduce the consumption of Graphene consumption and CNT, reduces the percolation threshold forming conductive network in CNT and each comfortable Polyurethane Thermoplastic Elastomer rubber TPU of Graphene.Nanocomposite system (cooperative effect of CNT+Graphene) is introduced in Polyurethane Thermoplastic Elastomer rubber TPU and is prepared electromagnetic shield cloth, and consumption is few, and performance is good, has no report, is the novel point of this patent.
CNT: CNT has excellent mechanical property and efficient electric heating transmission characteristic, and it has by the curling seamless nanotube-shaped shell structurre of single or multiple lift graphite flake, and caliber size is nanoscale, and draw ratio is up to 100 ~ 1000.
The passivation (acid treatment) of CNT, can be used in example: be with in churned mechanically three mouthfuls of reaction bulbs and add 100g CNT, add the mixed acid of the 500mL concentrated sulfuric acid and concentrated hydrochloric acid, after the ultrasonic 30min of stirred at ambient temperature, be heated to 60 DEG C of constant temperature and stir 3 hours, stop heating, be cooled to room temperature, after filtering with sand core funnel, wash CNT with water to neutral, then within 24 hours, obtain the CNT of passivation 80 DEG C of vacuumizes.
Carbon nano tube surface nickel plating (can be used in example):
Activation:
By after passivation CNT dipping 90min in acid (pH is less than 2) tin chloride solution (concentration is 10g/L), ultrasonic 30min, filters, dries; Add ultrasonic 5min after flooding 90min in the 1000mL methanol solution of 5.5g nickel acetate and 5.5g sodium phosphite, filter.Dry.
Nickel plating:
26g six water and nickelous sulfate, potassium citrate 48g, 26g sodium hypophosphite and ammonium sulfate 24g are made into the 1L aqueous solution, the CNT of activation is added in the above-mentioned aqueous solution, after stirring lower ultrasonic 15min, be heated to 60 DEG C of constant temperature and stir 90min, terminate to be cooled to room temperature, after suction filtration, washing and vacuumize, obtain nickel-plating carbon nanotube.
Graphene:
Graphene is a kind of semi-metallic, has the thermal conductivity (3000 ~ 5000Wm of the electron mobility of superelevation, huge theoretical specific surface area, good light transmission, high Young's modulus and excellence at normal temperatures
-1k
-1).
The dispersion (can be used in example) of CNT and Graphene:
Mass fraction be 30% CNT or nickel-plating carbon nanotube add in DMF, stir the lower ultrasonic 60min of room temperature, add the Graphene of respective quality mark again, as 4% of CNT, after stirring ultrasonic 60min, add the thermoplastic polyurethane slurry of respective quality mark, consumption (mass fraction) as CNT is 10% of Polyurethane Thermoplastic Elastomer rubber TPU, form the Polyurethane Thermoplastic Elastomer rubber TPU slurry having electro-magnetic screen function uniformly under room temperature after ultrasonic agitation 60min, can be used for next step coating.
Embodiment 3
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of CNT and graphene oxide, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Embodiment 4
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Embodiment 5
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of nickel-plating carbon nanotube and graphene oxide, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Embodiment 6
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of nickel-plating carbon nanotube and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Embodiment 7
A kind of preparation method of electromagnetic shield cloth, its preparation process is by the dispersion of nano electromagnetic shielding material in a solvent, fabric 3 surface is coated on after mixing with thermoplastic polyurethane slurry, as thermoplastic polyurethane slurry screen layer 2, apply one deck thermoplastic polyurethane slurry after oven dry again and form electromagnetic shield cloth as thermoplastic polyurethane slurry surface layer 4, can be used for protecting electromagnetic radiation.
The composite electromagnetic screen particle that described nano electromagnetic shielding material is made up of nickel-plating carbon nanotube and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Described nano electromagnetic shielding material and thermoplastic polyurethane slurry Homogeneous phase mixing liquid roller coat or knife coating coat fabric face, and after drying, coating layer thickness is 0.4mm-2.0mm.
Embodiment recited above is only be described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the utility model design concept prerequisite; the various modification that in this area, common engineers and technicians make the technical solution of the utility model and improvement; all should fall into protection domain of the present utility model, the technology contents of the utility model request protection is all recorded in detail in the claims.
Claims (2)
1. an electromagnetic shield cloth, it is characterized in that comprising nano electromagnetic shielding particle (1), thermoplastic polyurethane slurry screen layer (2), fabric 3 and thermoplastic polyurethane slurry surface layer (4), containing nano electromagnetic shielding particle (1) in described thermoplastic polyurethane slurry screen layer (2), thermoplastic polyurethane slurry screen layer (2) covers fabric (3) surface, thermoplastic polyurethane slurry screen layer (2) is coated with thermoplastic polyurethane slurry surface layer (4).
2. a kind of electromagnetic shield cloth according to claim 1, it is characterized in that the composite electromagnetic screen particle that described nano electromagnetic shielding particle (1) is made up of CNT and Graphene, the mass fraction in composite electromagnetic shield materials of CNT is 95% ~ 99%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910222.7U CN205134069U (en) | 2015-11-16 | 2015-11-16 | Electromagnetic shielding cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520910222.7U CN205134069U (en) | 2015-11-16 | 2015-11-16 | Electromagnetic shielding cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205134069U true CN205134069U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520910222.7U Active CN205134069U (en) | 2015-11-16 | 2015-11-16 | Electromagnetic shielding cloth |
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| CN (1) | CN205134069U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040454A (en) * | 2017-11-22 | 2018-05-15 | 东莞市明骏智能科技有限公司 | A kind of manufacturing process of the electromagnetic shielding tent of graphene-carbon nano tube composite material |
| CN108995324A (en) * | 2018-04-23 | 2018-12-14 | 佛山市高明尚昂科技有限公司 | A kind of synthetic leather of electromagnetic shielding and preparation method thereof |
| EP3613582A1 (en) * | 2018-08-24 | 2020-02-26 | Tai Yu Arts & Development Co., Ltd. | A composite and an article comprising the same |
-
2015
- 2015-11-16 CN CN201520910222.7U patent/CN205134069U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108040454A (en) * | 2017-11-22 | 2018-05-15 | 东莞市明骏智能科技有限公司 | A kind of manufacturing process of the electromagnetic shielding tent of graphene-carbon nano tube composite material |
| CN108040454B (en) * | 2017-11-22 | 2022-05-17 | 东莞市明骏智能科技有限公司 | Manufacturing process of electromagnetic shielding tent made of graphene-carbon nanotube composite material |
| CN108995324A (en) * | 2018-04-23 | 2018-12-14 | 佛山市高明尚昂科技有限公司 | A kind of synthetic leather of electromagnetic shielding and preparation method thereof |
| EP3613582A1 (en) * | 2018-08-24 | 2020-02-26 | Tai Yu Arts & Development Co., Ltd. | A composite and an article comprising the same |
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