CN112806630A - Electromagnetic interference preventing material and electromagnetic interference preventing clothing - Google Patents

Abstract

The application provides an anti-electromagnetic interference material and an anti-electromagnetic interference garment for improving the anti-electromagnetic interference capability of the material. The material for preventing electromagnetic interference comprises: at least one shielding film; the at least one shielding film layer comprises a wave absorbing layer, a carrier layer, an adhesive layer and a metal layer; the wave absorbing layer comprises metal particles, carbon particles and mixed resin and is used for absorbing electromagnetic interference; the carrier layer is made of a plastic material and used for increasing the strength of the shielding film; the metal layer is a metal film and is used for increasing the strength of the shielding film and blocking electromagnetic interference, the carrier layer is combined with the metal layer through the adhesive layer, and the wave-absorbing layer is combined with the carrier layer or the metal layer.

Description

Electromagnetic interference preventing material and electromagnetic interference preventing clothing

Technical Field

The application relates to the field of shielding, in particular to an anti-electromagnetic interference material and an anti-electromagnetic interference garment.

Background

Electromagnetic interference is ubiquitous in the earth's environment, is naturally occurring and believed to be manufactured, and affects the proper operation of various devices and poses a hazard to humans.

At present, in order to normally operate various textile equipment and damage human bodies, the equipment is mainly placed in a special environment, the human bodies are mainly protected by radiation-proof clothes, and the radiation-proof clothes at present adopt a metal fiber and pure cotton fiber blending process, namely, metal is drawn into filaments to form a net-shaped structure in the fabric.

However, the electromagnetic interference cannot be completely avoided due to the formation of the mesh structure.

Disclosure of Invention

The application provides an anti-electromagnetic interference material and an anti-electromagnetic interference garment for improving the anti-electromagnetic interference capability of the material.

A first aspect of an embodiment of the present application provides an electromagnetic interference preventing material, including:

at least one shielding film;

the at least one shielding film layer comprises a wave absorbing layer, a carrier layer, an adhesive layer and a metal layer;

the wave absorbing layer comprises metal particles and carbon particles and is used for absorbing electromagnetic interference;

the carrier layer is made of a plastic material and used for increasing the strength of the shielding film;

the metal layer is a metal film and is used for increasing the strength of the shielding film and blocking electromagnetic interference, the carrier layer is combined with the metal layer through the adhesive layer, and the wave-absorbing layer is combined with the carrier layer or the metal layer.

Optionally, the wave-absorbing layer further comprises flame-retardant materials of different grades selected according to the requirements of users.

Optionally, the metal particles include silver particles, copper particles, aluminum particles, nickel particles, magnesium particles, iron particles, manganese particles, mica particles, and zinc particles, and the carbon particles include graphene particles and carbon nanotube particles.

Optionally, the silver particles, the copper particles, the aluminum particles, the nickel particles, the magnesium particles, the iron particles, the manganese particles, the mica particles, the zinc particles, the graphene particles, and the carbon nanotube particles are proportioned in a preset ratio.

Optionally, the electromagnetic interference preventing material further includes:

a mixed resin;

the silver particles, the copper particles, the aluminum particles, the nickel particles, the magnesium particles, the iron particles, the manganese particles, the mica particles, the zinc particles, the graphene particles and the carbon nanotube particles are fused by the mixed resin, and the thickness of the wave-absorbing layer is 3 to 200 micrometers.

Optionally, the carrier layer comprises a polypropylene material, a thermoplastic polyester material, a polyvinyl chloride material and/or an ABS plastic material, the thickness of the carrier layer being 3 to 50 microns.

Optionally, the metal layer is a copper, aluminum, or silver alloy metal thin film.

Optionally, the shielding layer includes at least one metal layer, the number of the metal layers is determined according to a user's requirement, and the thickness of the metal layer is 3 micrometers to 100 micrometers.

A second aspect of the embodiments of the present application provides an electromagnetic interference shielding garment, wherein the garment includes the electromagnetic interference shielding material of the first aspect.

Optionally, the electromagnetic interference prevention garment further comprises:

the fabric layer is composed of cotton, hemp, wool, silk, viscose rayon, acetate rayon, cuprammonium rayon, terylene, cotton, polypropylene, acrylic, spandex, vinylon and waterproof fabrics.

To sum up, can see, the anti electromagnetic interference's that this application provided material includes the absorbing layer who constitutes by metal particle and carbon particle, the carrier layer that constitutes by plastics class material to and metal film's metal layer, not only can pass through metal film isolated electromagnetic interference, can also constitute absorbing layer absorption electromagnetic wave through metal particle, carbon particle and mixed type resin simultaneously, the further anti electromagnetic interference ability that increases the material, the mesh problem through weaving of prior art has been solved, anti electromagnetic interference's ability is more outstanding for current.

Drawings

The above and other features, advantages and aspects of various embodiments of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an emi shielding material according to an embodiment of the present disclosure;

fig. 2 is a schematic structural view of an electromagnetic interference prevention garment according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a shielding film provided in an embodiment of the present application;

fig. 4 is a schematic flow chart of a method for manufacturing a shielding film according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprise," "include," and "have," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules expressly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus, the division of modules presented herein is merely a logical division that may be implemented in a practical application in a further manner, such that a plurality of modules may be combined or integrated into another system, or some feature vectors may be omitted, or not implemented, and such that couplings or direct couplings or communicative coupling between each other as shown or discussed may be through some interfaces, indirect couplings or communicative coupling between modules may be electrical or other similar, this application is not intended to be limiting. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an emi shielding material according to an embodiment of the present disclosure, where the emi shielding material includes:

at least one shielding film;

the at least one shielding film comprises a wave-absorbing layer 101, a carrier layer 102, an adhesive layer 103 and a metal layer 104;

the wave-absorbing layer 101 comprises metal particles and carbon particles, and the wave-absorbing layer 101 is used for absorbing electromagnetic interference;

the carrier layer 102 is made of a plastic-type material for increasing the strength of the shielding film;

the metal layer 104 is a metal thin film for increasing the strength of the shielding film and blocking electromagnetic interference, wherein the carrier layer 102 is combined with the metal layer 104 through the adhesive layer 103, that is, the carrier layer 102 is bonded with the metal layer 104 through the adhesive layer 103, the adhesive layer 103 may be common glue or glue of a special material, and in addition, the wave-absorbing layer 101 is combined with the bonded carrier layer 102 or the metal layer 104.

It is understood that the wave-absorbing layer 101 further includes a mixed resin, the metal particles and the carbon particles are polymerized by the mixed resin, and the wave-absorbing layer 101 has viscosity to bind the metal particles and the carbon particles by the mixed resin, and can be directly combined with the carrier layer 102 or the metal layer 104, and the wave-absorbing layer 101 and the carrier layer 102 are combined as an example in fig. 1.

In one embodiment, the wave absorbing layer 101 further includes a flame retardant material, which is an optional material and may be added or not added according to the needs of the user, and the flame retardant grade of the flame retardant material may also be selected according to the needs of the user, and if the user has a high requirement for flame retardancy, the flame retardant material with a relatively high flame retardant grade is selected.

It is understood that the metal particles in the wave-absorbing layer 101 include silver particles, copper particles, aluminum particles, nickel particles, magnesium particles, iron particles, manganese particles, mica particles and zinc particles, and the carbon particles in the wave-absorbing layer 101 include graphene particles and carbon nanotube particles, wherein the metal particles and the carbon particles are proportioned according to a preset ratio, the proportioning of the preset ratio is associated with the shielding rate required by the user, and the ratio of the silver particles, the copper particles, the aluminum particles, the nickel particles, the magnesium particles, the iron particles, the manganese particles, the mica particles, the zinc particles, the graphene particles and the carbon nanotube particles can be adjusted according to the shielding rate required by the user for the shielding film. Wherein the preset ratio of silver particles, copper particles, aluminum particles, nickel particles, magnesium particles, iron particles, manganese particles, mica particles, zinc particles, graphene particles and carbon nanotube particles is as follows: silver particles: 1% -40%; copper particles: 0.5% -60%; aluminum particles: 5% -55%; nickel particles: 5% -55%; magnesium particles: 1% -30%; iron particles: 1% -30%; manganese particles: 1% -30%; zinc particles: 1% -25%; mica particles: 0.5% -10%; graphene particles: 0.05% -10%; carbon nanotube particles: 0.3 to 15 percent. That is, here, silver particles, copper particles, aluminum particles, nickel particles, magnesium particles, iron particles, manganese particles, mica particles, zinc particles, graphene particles, and carbon nanotube particles arranged in a predetermined ratio are fused by a mixed resin to obtain the wave-absorbing layer 101 (the thickness of the wave-absorbing layer 101 obtained after the fusion is 3 to 200 μm), and the wave-absorbing layer 101 obtained after the fusion is bonded to the carrier layer 102 or the metal layer 104.

In one embodiment, the carrier layer 102 comprises a polypropylene material, a thermoplastic polyester material, a polyvinyl chloride material and/or an ABS plastic material, the thickness of the carrier layer 102 is 3 microns to 50 microns, it is understood that the carrier layer 102 may also be selected from other types of plastic materials, such as PC plastic, according to the needs of the user, besides the above plastic materials, and the carrier layer is a film type material.

In one embodiment, the metal layer 104 is a metal film of copper, aluminum, or silver alloy, although the material of the metal layer 104 can be selected according to the product requirement. It is understood that the shielding layer comprises at least one metal layer, wherein the number of the metal layers is selected according to the requirement of a user, and the thickness of the metal layer is 3 micrometers to 100 micrometers.

To sum up, can see, the anti electromagnetic interference's that this application provided material includes the absorbing layer who constitutes by metal particle, carbon particle and mixed type resin, the carrier layer who constitutes by plastics class material to and metal film's metal layer, not only can pass through metal film isolated electromagnetic interference, can also constitute absorbing layer through metal particle, carbon particle and mixed type resin simultaneously and absorb the electromagnetic wave, further increase the anti electromagnetic interference ability of material, the mesh problem through weaving of prior art has been solved, anti electromagnetic interference's ability is more outstanding for current.

The embodiment of the present application further provides an electromagnetic interference prevention garment, which may be, for example: clothing such as hats, clothing, pants, aprons, masks, and raincoats;

the electromagnetic interference preventing garment comprises the electromagnetic interference preventing material shown in figure 1.

The electromagnetic interference preventing garment further comprises at least one fabric layer, wherein the fabric layer is made of cotton, hemp, wool, silk, viscose rayon, acetate rayon, cuprammonium rayon, polyester, cotton, polypropylene, acrylic, spandex, vinylon and waterproof fabrics. It is understood that the fabric layer may also include other synthetic fibers, such as polyolefin spandex, without limitation.

Referring to fig. 2, fig. 2 is a schematic structural view of an emi shielding garment according to an embodiment of the present disclosure, the emi shielding garment includes a fabric layer 201 and a fabric layer 206, the wave-absorbing layer 202 is combined with a carrier layer 203, and a metal layer 205 is combined with the carrier layer 203 through a glue layer 204, such that the fabric layer 201 is combined with the wave-absorbing layer 202, and the fabric layer 206 is combined with the metal layer 205.

It can be understood that, when the electromagnetic interference resistant garment only comprises one fabric layer, and the wave-absorbing layer is combined with the carrier layer, the one fabric layer can be combined with the wave-absorbing layer or can be combined with the metal layer; when the wave-absorbing layer is combined with the metal layer, the fabric layer can be combined with the wave-absorbing layer or the carrier layer, and the details are not limited.

To sum up, can see, the anti-electromagnetic interference's that this application provided clothing includes anti-electromagnetic interference's material, still further includes at least one deck precoat, has solved prior art through the mesh problem of weaving, and anti-electromagnetic interference's ability is more outstanding for current while, increases the wearable of clothing, improves user experience.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a shielding film according to an embodiment of the present application, where the shielding film includes:

a carrier layer 302, a first shielding layer 301 and a second shielding layer 303;

the carrier layer 302 includes a target carrier and metal particles and carbon particles filled in the target carrier, that is, the metal particles and carbon particles in the carrier layer 302 are filled inside the target carrier for shielding electromagnetic interference;

the first shielding layer 301 and the second shielding layer 303 are both attached to the carrier layer 302, and the first shielding layer 301 and the second shielding layer 303 are symmetrically disposed with respect to the carrier layer 302, that is, the first shielding layer 301 and the second shielding layer 303 may be disposed on two sides of the carrier layer 302;

the first shielding layer 301 and the second shielding layer 303 are made of metal particles and carbon particles, and are used for shielding electromagnetic interference and strengthening a target carrier.

In an embodiment, the object carrier may select different cloth materials according to the requirement of the user for the thickness, for example, the object carrier may include a non-woven fabric, or a polyester fiber cloth, and of course, the object carrier may also include other types of cloth materials, and may also select different cloth materials according to other requirements of the user, which is not limited in particular.

The term "filling the metal particles and the carbon particles into the target carrier" means that the metal particles and the carbon particles are filled into the target carrier by an electroplating, water plating, evaporation or sputtering process, and since the target carrier is a cloth material and there are gaps in the cloth material due to the weaving property of the cloth material, the metal particles and the carbon particles are filled into the gaps of the target carrier and the surface of the target carrier by an electroplating, water plating, evaporation or sputtering process to form a carrier layer for shielding electromagnetic interference.

The metal particles include silver particles, copper particles, nickel particles, aluminum particles, magnesium particles, iron particles, manganese ions, and mica particles, and the carbon particles include graphene particles and carbon nanotube particles, wherein the metal particles and the carbon particles are arranged at a predetermined ratio, and the predetermined ratio is associated with a shielding rate required by a user. Wherein, the preset ratio of each particle in the silver particles, copper particles, nickel particles, aluminum particles, magnesium particles, iron particles, manganese ions, zinc particles, mica particles, graphene particles and carbon nanotube particles, silver particles is as follows: silver: 1% -40%; copper: 0.5% -70%; aluminum: 5% -70%; nickel: 5% -70%; magnesium: 1% -30%; iron: 1% -30%; manganese: 1% -30%; mica: 0.5% -20%; graphene: 0.1% -15%; carbon nanotubes: 0.5% -15%; zinc: 1 to 30 percent. That is, silver particles, copper particles, nickel particles, aluminum particles, magnesium particles, iron particles, manganese ions, zinc particles, mica particles, graphene particles, and carbon nanotube particles arranged in a predetermined ratio are filled into the gaps and the surfaces of the target carrier by electroplating, water plating, evaporation, or sputtering.

In one embodiment, the first shielding layer 301 and the second shielding layer 303 are attached to the carrier layer 302 by coating, extruding or spraying, wherein the first shielding layer 301 and the second shielding layer 303 are attached to the carrier layer by using the same material and the same predetermined ratio as the metal particles and the carbon particles filled in the target carrier, that is, the first shielding layer 301 and the second shielding layer 303 are attached to the carrier layer 302 by mixing the silver particles, the copper particles, the nickel particles, the aluminum particles, the magnesium particles, the iron particles, the manganese ions, the zinc particles, the mica particles, the graphene particles and the carbon nanotube particles into a liquid state according to a predetermined ratio and then by a coating, extruding or spraying process.

It should be noted that, when the metal particles and the carbon particles are filled into the gaps of the target carrier and the surface of the target carrier by the way of electroplating, water plating, evaporation or sputtering, the gap of the target carrier may not be filled 100%, and the metal particles and the carbon particles disposed at the same ratio are mixed into a liquid state by extrusion or spraying, and are attached to both sides of the carrier layer 102, and since the metal particles and the carbon particles disposed at a predetermined ratio are mixed into a liquid state, therefore, when the target carrier is extruded or sprayed, a part of the metal particles and the carbon particles can be filled into the gaps of the target carrier, thereby further increasing the shielding rate of the electromagnetic interference, meanwhile, a shielding layer composed of metal particles and carbon particles is formed on two surfaces of the carrier layer 302, and the electromagnetic interference resistance of the shielding film is further improved.

It should be noted that, in practical applications, the metal particles and the carbon particles mixed into the liquid state according to the preset ratio may be attached to the carrier layer 302 multiple times by means of coating, extruding or spraying, that is, the first shielding layer and the second shielding layer are attached to the carrier layer 302 multiple times, so as to further increase the anti-electromagnetic interference capability of the shielding film.

In summary, it can be seen that the shielding film provided by the present invention is formed by attaching metal particles and carbon particles to a target carrier to form a carrier layer, and reattaching shielding layers composed of metal particles and carbon particles on both sides of the carrier layer, and compared with the shielding film formed by the conventional weaving technique, since the weaving may have meshes, the shielding rate of the present invention adopts a cloth material as the carrier, fills (plates) the metal material in gaps of the cloth material, and then makes the material into a liquid state, and then recoats and presses the metal material on the carrier, so that the problem of the meshes of the weaving in the conventional technique is not present, and the shielding rate is more excellent than that of the conventional one.

The shielding film provided by the present application is explained above, and the method for manufacturing the shielding film provided by the present application is explained below from the perspective of the apparatus for manufacturing the shielding film.

Referring to fig. 4, fig. 4 is a schematic flow chart of a method for manufacturing a shielding film according to an embodiment of the present application, including:

401. providing an object carrier.

In this embodiment, the apparatus for preparing the shielding film may first provide a target carrier, which includes, but is not limited to, the following cloth materials: non-woven fabric, non-woven fabric and polyester fiber fabric, wherein the material of the target carrier can be selected according to the thickness of the shielding film or other requirements of a user.

402. And filling the metal particles and the carbon particles into the target carrier to obtain a carrier layer.

In this embodiment, after obtaining the target carrier, the apparatus for preparing the shielding film may fill metal particles and carbon particles into the target carrier to obtain the carrier layer, wherein the metal particles include silver particles, copper particles, nickel particles, aluminum particles, magnesium particles, iron particles, manganese ions, and mica particles, and the carbon particles include graphene particles and carbon nanotube particles. Silver particles, copper particles, nickel particles, aluminum particles, magnesium particles, iron particles, manganese ions, zinc particles, mica particles, graphene particles and carbon nanotube particles can be arranged according to a preset ratio, and the gaps and the surfaces of the target carrier are filled by electroplating, water plating, evaporation plating or sputtering processes to obtain a carrier layer, so that the purpose of shielding electromagnetic interference is achieved.

The metal particles and the carbon particles are arranged at a predetermined ratio, the predetermined ratio is related to the shielding rate required by the user, and the ratio of the silver particles, the copper particles, the nickel particles, the aluminum particles, the magnesium particles, the iron particles, the manganese ions, the mica particles, the graphene particles and the carbon nanotube particles may be adjusted according to the shielding rate required by the user, for example, the ratio of the aluminum particles is increased or the ratio of the silver particles is decreased, and the like, and the ratio is not limited specifically.

403. And attaching the first shielding layer and the second shielding layer to the carrier layer to obtain the shielding film.

In this embodiment, after the metal particles and the carbon particles are filled into the target carrier to obtain the carrier layer, the first shielding layer and the second shielding layer may be further attached to the carrier layer to finally obtain the shielding film, where the first shielding layer and the second shielding layer are symmetrically disposed with respect to the carrier layer (i.e., the first shielding layer and the second shielding layer are respectively attached to two sides of the carrier layer), and the first shielding layer and the second shielding layer are composed of the metal particles and the carbon particles and are used for shielding electromagnetic interference and strengthening the carrier layer.

It is understood that, here, attaching the first shielding layer and the second shielding layer to the carrier layer means mixing the metal particles and the carbon particles into a liquid state according to a preset ratio, and then attaching the metal particles and the carbon particles mixed into the liquid state according to the preset ratio to both sides of the carrier layer by means of coating extrusion or spraying to form the first carrier layer and the second carrier layer, thereby further shielding electromagnetic interference.

In summary, it can be seen that, in the method for preparing the shielding film provided by the present application, the cloth material is used as the carrier, the metal material is filled (electroplated) in the gaps of the cloth material, the material is made into a liquid state, and the material is coated and extruded again on the carrier, so that the problem of meshes in the prior art is solved, and the shielding rate is more excellent than that in the prior art.

It can be understood that the electromagnetic interference preventing garment may further include the shielding film shown in fig. 3 and the shielding film prepared by the method shown in fig. 4, and only at least one fabric layer needs to be added on the shielding film.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. An electromagnetic interference resistant material, comprising:

at least one shielding film;

the at least one shielding film layer comprises a wave absorbing layer, a carrier layer, an adhesive layer and a metal layer;

the wave absorbing layer comprises metal particles and carbon particles and is used for absorbing electromagnetic interference;

the carrier layer is made of a plastic material and used for increasing the strength of the shielding film;

the metal layer is a metal film and is used for increasing the strength of the shielding film and blocking electromagnetic interference, the carrier layer is combined with the metal layer through the adhesive layer, and the wave-absorbing layer is combined with the carrier layer or the metal layer.

2. An electromagnetic interference preventing material as recited in claim 1, wherein the wave absorbing layer further comprises flame retardant materials of different grades selected according to user's requirements.

3. The electromagnetic interference shielding material of claim 1, wherein the metal particles comprise silver particles, copper particles, aluminum particles, nickel particles, magnesium particles, iron particles, manganese particles, mica particles, and zinc particles, and the carbon particles comprise graphene particles and carbon nanotube particles.

4. The EMI shielding material as set forth in claim 3, wherein said silver particles, said copper particles, said aluminum particles, said nickel particles, said magnesium particles, said iron particles, said manganese particles, said mica particles, said zinc particles, said graphene particles and said carbon nanotube particles are proportioned in a predetermined ratio.

5. The EMI resistant material of claim 3, further comprising:

a mixed resin;

the silver particles, the copper particles, the aluminum particles, the nickel particles, the magnesium particles, the iron particles, the manganese particles, the mica particles, the zinc particles, the graphene particles and the carbon nanotube particles are fused by the mixed resin, and the thickness of the wave-absorbing layer is 3 to 200 micrometers.

6. An electromagnetic interference prevention material as claimed in any one of claims 1 to 5 wherein the carrier layer comprises a polypropylene material, a thermoplastic polyester material, a polyvinyl chloride material and/or an ABS plastic material, the carrier layer having a thickness of 3 to 50 microns.

7. An EMI shielding material as claimed in any one of claims 1 to 5, wherein the metal layer is a Cu, Al or Ag alloy based metal film.

8. The EMI shielding material as claimed in any one of claims 1 to 5, wherein the shielding layer includes at least one metal layer, the number of the metal layers is selected according to the user's requirement, and the thickness of the metal layer is 3-100 μm.

9. An EMI resistant garment comprising the EMI resistant material of any one of claims 1-8.

10. The electromagnetic interference prevention garment of claim 9, further comprising:

the fabric layer is composed of cotton, hemp, wool, silk, viscose rayon, acetate rayon, cuprammonium rayon, terylene, cotton, polypropylene, acrylic, spandex, vinylon and waterproof fabrics.

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