CN212894568U

CN212894568U - Conductive non-woven fabric

Info

Publication number: CN212894568U
Application number: CN202021775064.6U
Authority: CN
Inventors: 张坤; 蒲唯慷
Original assignee: Shenzhen Hongsenyu Electronic Materials Co ltd
Current assignee: Shenzhen Hongsenyu Electronic Materials Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-04-06
Anticipated expiration: 2030-08-20

Abstract

The invention relates to a conductive non-woven fabric which comprises a non-woven fabric body and a nickel plating layer covered on one side of the non-woven fabric body, wherein a graphite layer is arranged on the surface of the nickel plating layer, a PET (polyethylene terephthalate) layer covers the outer surface of the graphite layer, the other side of the non-woven fabric body is connected with a conductive adhesive layer, and the conductive adhesive layer is adhered to a release paper layer. According to the invention, the graphite layer is arranged on the surface of the nickel-plated layer, the graphite layer has good heat dissipation effect and excellent conductivity, and the graphite layer is electrically connected with the nickel-plated layer, so that the conductive non-woven fabric has good heat dissipation effect, and meanwhile, the nickel-plated layer, the graphite layer and the conductive adhesive layer are electrically conducted, and the conductivity of the conductive non-woven fabric is not influenced.

Description

Conductive non-woven fabric

Technical Field

The invention relates to the technical field of electromagnetic shielding materials of electronic equipment, in particular to a conductive non-woven fabric.

Background

The conductive non-woven fabric is a special non-woven fabric with metal characteristics, is suitable for various electronic and electrical products such as computers, mobile phones, wires, cables, cabinet cases, medical appliances and the like, and is mainly used for shielding or isolating electromagnetic waves or infinite electromagnetic wave interference during high-frequency transmission.

The phenomenon of generating heat often can appear after the use of a period of time to electrically conductive non-woven fabrics, if can not in time dispel the heat, can lead to the electric conductivity variation of electrically conductive non-woven fabrics, probably influence the normal work of electronic and electrical products even when serious, how under the prerequisite of solving the difficult problem of electrically conductive non-woven fabrics heat dissipation, the electric conductivity that can also guarantee electrically conductive non-woven fabrics is not influenced, has become the technical problem who waits urgently to solve.

Disclosure of Invention

The invention aims to provide a conductive non-woven fabric, which aims to solve the technical problem that the existing conductive non-woven fabric is difficult to dissipate heat and can ensure that the conductivity of the conductive non-woven fabric is not influenced. The technical scheme used for solving the technical problems of the invention is as follows:

the utility model provides a conductive non-woven fabric, includes the non-woven fabric body, and covers the nickel coating of non-woven fabric body one side, the surface of nickel coating is provided with the graphite layer, the surface covering on graphite layer has the PET layer, the opposite side and the conductive adhesive layer of non-woven fabric body are connected, the conductive adhesive layer bonds on releasing paper layer.

Preferably, the nickel-plated layer and the graphite layer are bonded through a conductive pressure-sensitive adhesive tape, and the conductive adhesive layer is bonded on the non-woven fabric body through the conductive pressure-sensitive adhesive tape.

Further, the thickness of the nickel plating layer is 0.001-0.002 mm.

Further, the thickness of the graphite layer is 0.003-0.005 mm.

Further, the PET layer is transparent, and the thickness of the PET layer is 0.001-0.003 mm.

Further, the conductive adhesive layer is a substrate-free conductive adhesive layer, and the thickness of the conductive adhesive layer is 0.01-0.05 mm.

Further, the thickness of the non-woven fabric body is 0.01-0.04 mm.

Furthermore, the thick bottom of the release paper layer is 0.03-0.06 mm.

Compared with the prior art, the invention has the beneficial technical effects that: according to the invention, the graphite layer is arranged on the surface of the nickel-plated layer, the graphite layer has good heat dissipation effect and excellent conductivity, and the graphite layer is electrically connected with the nickel-plated layer, so that the conductive non-woven fabric has good heat dissipation effect, the nickel-plated layer, the graphite layer and the conductive adhesive layer are electrically conducted, the conductivity of the conductive non-woven fabric is not affected, and the resistance of the conductive non-woven fabric is lower than 0.1 omega through tests, so that the requirements of various electronic and electric products on the conductivity of the conductive non-woven fabric are met.

Drawings

FIG. 1 is a schematic structural diagram of a conductive nonwoven fabric according to an embodiment of the present invention;

wherein: 1. the non-woven fabric comprises a non-woven fabric body 2, a nickel-plated layer 3, a graphite layer 4, a PET layer 5, a conductive adhesive layer 6 and a release paper layer.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, the conductive non-woven fabric of the present embodiment includes a non-woven fabric body 1 and a nickel plating layer 2 covering one side of the non-woven fabric body 1, a graphite layer 3 is disposed on a surface of the nickel plating layer 2, a PET layer 4 covers an outer surface of the graphite layer 3, the other side of the non-woven fabric body 1 is connected to a conductive adhesive layer 5, and the conductive adhesive layer 5 is adhered to a release paper layer 6.

The effect of nickel coating 2 is as the conducting layer of electrically conductive non-woven fabrics, nickel coating 2 covers on non-woven fabrics body 1, can guarantee non-woven fabrics body 1's stability, nickel coating 2 closely adsorbs together with graphite layer 3, can prevent that graphite layer 3 from droing, can not take place the condition of falling the layer, nickel coating 2 covers can also prevent on non-woven fabrics body 1 that non-woven fabrics body 1 from by the oxidation, increase the life of electrically conductive non-woven fabrics, the maintenance cost of electrically conductive non-woven fabrics has been reduced.

More specifically, be the electric property between graphite layer 3 and the nickel coating 2 and switch on, for example, graphite layer 3 can bond on nickel coating 2 through electrically conductive pressure sensitive tape, electrically conductive pressure sensitive tape has good electrically conductive characteristic and can realize the performance of closely laminating with light, can guarantee that nickel coating 2 is inseparable with the ten minutes that graphite layer 3 bonded, graphite layer 3 can not drop easily, because the radiating effect of graphite layer 3, nickel coating 2's electric conductivity, can guarantee like this that electrically conductive non-woven fabrics has the heat dissipation electrically conductive function, the thermal diffusivity and the electric conductivity of electrically conductive non-woven fabrics can satisfy the requirement of all kinds of electronic and electrical products simultaneously.

The conductive adhesive layer 5 can be bonded on the non-woven fabric body 1 through the conductive pressure-sensitive adhesive tape, so that the connection stability between the conductive adhesive layer 5 and the non-woven fabric body 1 is ensured, and the conductive deterioration of the conductive non-woven fabric caused by the loosening or falling of the conductive adhesive layer 5 is prevented.

In order to ensure the conductive effect, the thickness of the nickel plating layer is not too large, in the embodiment, the thickness of the nickel plating layer 2 is 0.001-0.002 mm; in order to ensure the heat dissipation effect, the thickness of the graphite layer 3 should not be too large, in this embodiment, the thickness of the graphite layer 3 is 0.003-0.005 mm.

The flexibility of electrically conductive non-woven fabrics can be improved on PET layer 4, effectively promotes the moisture barrier property of electrically conductive non-woven fabrics, and PET layer 4 is preferred transparent, can guarantee that electrically conductive non-woven fabrics is whole more pleasing to the eye, and in this embodiment, the thickness on PET layer 4 is 0.001-0.003 mm.

The conductive adhesive layer 5 is used as one of the conductive layers of the conductive non-woven fabric, and is bonded on the release paper layer 6, when the user uses the adhesive tape, the release paper layer 6 is torn, then the conductive adhesive layer 5 is pasted on a pasted object, so that the conductivity of the conductive non-woven fabric is not affected, in the embodiment, the thickness of the conductive adhesive layer 5 is 0.01-0.05mm, the conductive adhesive layer 5 is preferably a substrate-free conductive adhesive layer, the conductivity of the substrate-free conductive adhesive layer is better, the conductivity of the conductive non-woven fabric can be improved, the thick bottom of the release paper layer 6 is 0.03-0.06mm, and the release paper layer 6 can be white release paper, for.

The non-woven fabric body 1 is used as a substrate of the conductive non-woven fabric, and the thickness is preferably 0.01-0.04 mm.

To better explain the conductivity and heat dissipation of the conductive nonwoven fabric of the present invention, we will describe an embodiment of the conductive nonwoven fabric, which is made by the following steps:

taking a non-woven fabric body 1 with the thickness of 0.02mm, and electroplating a nickel plating layer 2 in a vacuum environment, wherein the thickness of the nickel plating layer 2 is 0.0015 mm;

coating a graphite layer 3 on the surface of the nickel-plated layer 2, wherein the thickness of the graphite layer 3 is 0.004 mm;

then, a PET layer 4 is attached to the surface of the graphite layer 3, and the PET layer 4 is a transparent PET film with the thickness of 0.001 mm;

turning the non-woven fabric body 1 to the other side, and attaching a conductive adhesive layer 5 to the other side, wherein the conductive adhesive layer 5 is a double-sided conductive adhesive layer, and the thickness of the conductive adhesive layer 5 is 0.02 mm;

finally, the other side of the conductive adhesive layer 5 is pasted on the white release paper layer 6, and the thickness of the release paper layer 6 is 0.05 mm.

Through heat dissipation and electrical conductivity tests, the surface temperature of the conductive non-woven fabric of the embodiment is basically maintained in a small temperature change range, the resistance value is between 0.02 and 0.06 omega, and the heat dissipation and the electrical conductivity of the surface of the conductive non-woven fabric can meet the requirements of various electronic and electrical products on the electrical conductivity of the conductive non-woven fabric.

According to the invention, the graphite layer is arranged on the surface of the nickel-plated layer, the graphite layer has good heat dissipation effect and excellent conductivity, and the graphite layer is electrically connected with the nickel-plated layer, so that the whole conductive non-woven fabric has good heat dissipation effect, and meanwhile, the nickel-plated layer, the graphite layer and the conductive adhesive layer are electrically conducted, so that the conductivity of the conductive non-woven fabric is not influenced, and through testing, the resistance of the conductive non-woven fabric is lower than 0.1 omega, so that the conductive non-woven fabric can be widely used in various electronic and electric products such as computers, mobile phones, wires, cables, cabinet cases, medical instruments and the.

The above examples merely represent several embodiments of the present invention, which are described in more detail and in more detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a conductive non-woven fabric, includes non-woven fabric body (1) to and cover nickel coating (2) of non-woven fabric body (1) one side, its characterized in that, the surface of nickel coating (2) is provided with graphite layer (3), the surface of graphite layer (3) covers has PET layer (4), the opposite side and the conductive adhesive layer (5) of non-woven fabric body (1) are connected, conductive adhesive layer (5) bond on release paper layer (6).

2. The conductive non-woven fabric according to claim 1, wherein the nickel-plated layer (2) and the graphite layer (3) are bonded through a conductive pressure sensitive adhesive tape, and the conductive adhesive layer (5) is bonded on the non-woven fabric body (1) through the conductive pressure sensitive adhesive tape.

3. The conductive nonwoven fabric according to claim 1, wherein the thickness of the nickel plating layer (2) is 0.001 to 0.002 mm.

4. The conductive nonwoven fabric according to claim 1 or 2, characterized in that the thickness of the graphite layer (3) is 0.003-0.005 mm.

5. The conductive nonwoven fabric according to claim 1, wherein the PET layer (4) is transparent, and the thickness of the PET layer (4) is 0.001-0.003 mm.

6. The conductive nonwoven fabric according to claim 1 or 2, wherein the conductive adhesive layer (5) is a substrate-free conductive adhesive layer, and the thickness of the conductive adhesive layer (5) is 0.01-0.05 mm.

7. The conductive nonwoven fabric according to claim 1 or 2, characterized in that the thickness of the nonwoven fabric body (1) is 0.01-0.04 mm.

8. The conductive nonwoven fabric as claimed in claim 1, wherein the release paper layer (6) has a thick bottom of 0.03-0.06 mm.