CN217025840U - Composite conductive foam - Google Patents

Abstract

The utility model discloses composite conductive foam which comprises first conductive cloth, foam and second conductive cloth, wherein the first conductive cloth and the second conductive cloth are respectively arranged on two sides of the foam, the first conductive cloth and the second conductive cloth are pressed and formed through flame-retardant hot melt adhesive, and the other side of the first conductive cloth is coated with insulating glue and is pressed and formed through release paper. According to the utility model, the electronic device is wrapped by the first conductive cloth and the insulating glue, so that the interference of electromagnetic waves can be effectively isolated. And a certain buffering effect can be provided by the foam layer to protect electronic devices. The second is electrically conductive cloth can further shield the electromagnetic wave, and its surface is provided with graphite alkene layer moreover, can effectually dispel the heat. Thereby realize electromagnetic shield, buffering and heat dissipation electrically conductive sponge as an organic whole.

Description

Composite conductive foam

Technical Field

The utility model relates to the technical field of conductive foam, in particular to composite conductive foam.

Background

With the rapid development of electronic information, the accuracy of electronic devices is increasing, and the requirements are also increasing, especially for electromagnetic interference between electronic devices. The existing electronic devices are generally covered by metal or by conductive cloth tape to shield the electromagnetic interference between the electronic devices. When the metal cover is designed to cover the shielding, the space requirement is extremely high, and the space of some precision devices cannot be met, so that the inside of a plurality of precision devices is generally shielded by adopting a conductive adhesive tape. However, the conventional conductive cloth adhesive tape is thin and generally used as an electromagnetic shield, and cannot be used as a buffer function and a heat dissipation function between precision electronic devices.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide composite conductive foam integrating electromagnetic shielding, buffering and heat dissipation functions.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the composite conductive foam comprises first conductive cloth, foam cotton and second conductive cloth, wherein the first conductive cloth and the second conductive cloth are respectively arranged on two sides of the foam cotton and are pressed and covered through flame-retardant hot melt adhesive to be formed, and the other side of the first conductive cloth is coated with insulating glue and is pressed and covered through release paper to be formed in a composite mode.

Furthermore, the first conductive cloth comprises a polyester fiber layer and a metal layer, and the metal layer covers two surfaces of the polyester fiber layer through electroplating.

Further, the metal layer is a nickel metal layer or a copper metal layer.

Furthermore, the second electrically conductive cloth includes polyester fiber layer, first metal level, second metal level and inoxidizing coating, first metal level is in through electroplating cover polyester fiber layer both sides, the second metal level electroplating is in first metal level both sides, the inoxidizing coating grows or coats the second metal level surface, the internal surface of second metal level passes through fire-retardant hot melt adhesive with the bubble is cotton to be connected.

Further, the first metal layer is a copper metal layer, the second metal layer is a nickel metal layer, and the protective layer is a graphene layer or a conductive carbon black layer.

Further, the insulating glue is flame-retardant insulating glue.

Furthermore, the thickness of the composite conductive foam is 0.6-2 mm.

Further, the composite conductive foam is wound into a coiled material.

The utility model has the beneficial effects that:

1. through first electrically conductive cloth and insulating cement parcel electron device, can effectual isolated electromagnetic wave interference. And then a certain buffer effect can be provided through the foam layer, so that electronic devices are protected. The second is electrically conductive cloth can further shield the electromagnetic wave, and its surface is provided with graphite alkene layer moreover, can effectually dispel the heat. Thereby realize electromagnetic shield, buffering and heat dissipation electrically conductive sponge as an organic whole.

2. The contact surfaces of the first conductive cloth and the second conductive cloth with the flame-retardant hot melt adhesive are plated with nickel metal layers, so that the first conductive cloth and the second conductive cloth can be effectively prevented from corrosion through the chemical property of nickel, and the service life of the flame-retardant hot melt adhesive is prolonged. And the outermost layer of the composite conductive foam is a graphene layer, so that the service life of the composite conductive foam is further prolonged through the self-lubricating and anti-corrosion properties of graphene, and certain texture is brought.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a block diagram of FIG. 1 labeled 6

Labeled in the figure as:

1. the insulation fabric comprises release paper, 2 parts of insulating glue, 3 parts of first conductive cloth, 4 parts of flame-retardant hot melt adhesive, 5 parts of foam, 6 parts of second conductive cloth, 601 parts of polyester fiber layer, 602 parts of first metal layer, 602 parts of second metal layer, 603 parts of protective 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, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a compound electrically conductive bubble is cotton, as shown in figure 1, includes that first electrically conductive cloth 3, bubble are cotton 5 and the electrically conductive cloth 6 of second, and first electrically conductive cloth 3 and the electrically conductive cloth 6 of second set up respectively in bubble cotton 5 both sides, it all covers the shaping through 4 pressure of fire-retardant hot melt adhesive each other, and first electrically conductive 4 cloth opposite side coating has insulating cement 2 and covers compound shaping through pressing from type paper 1. Preferably, the insulating glue is flame-retardant insulating glue. When the composite conductive foam is used, the release paper is uncovered, and then the composite conductive foam is pasted on the surface of the electronic device. The first conductive cloth and the second conductive cloth can provide electromagnetic shielding, and the interference of electromagnetic waves on electronic devices can be effectively shielded by combining the two conductive cloths. The foam provides a certain buffering effect, so that electronic products can be prevented from being generated, processed and used, and electronic devices can be effectively protected.

In the utility model, the first conductive cloth comprises a polyester fiber layer and metal layers, and the metal layers cover two sides of the polyester fiber layer through electroplating. The metal layer is a nickel metal layer or a copper metal layer, and the metal layer is preferably a metal kneading layer, so that the service life of the metal kneading layer can be prolonged by the anti-corrosion performance of the nickel metal.

As shown in fig. 2, which is a structural diagram of a second conductive fabric, the second conductive fabric includes a polyester fiber layer 601, a first metal layer 602, a second metal layer 603 and a protective layer 604, the first metal layer 602 covers two sides of the polyester fiber layer by electroplating, the second metal layer 603 is electroplated on two sides of the first metal layer 602, the protective layer 604 grows or coats an outer surface of the second metal layer 603, and an inner surface of the second metal layer 603 is connected with foam through a flame-retardant hot melt adhesive. The first metal layer 602 is a copper metal layer, the second metal layer 603 is a nickel metal layer, and the protective layer 604 is a graphene layer or a conductive carbon black layer, preferably a graphene layer. The second conductive cloth can further improve the electromagnetic shielding effect through the copper-nickel metal layer, and the service life can be effectively prolonged by utilizing the advantages of the graphene, and the second conductive cloth has certain texture.

The flame-retardant hot melt adhesive is adopted, so that the damage of open fire to electronic devices can be effectively avoided to a certain extent.

As shown in figure 1, the thickness of the composite conductive foam is 0.6-2 mm. And the composite conductive foam is wound into a coiled material. The performance indexes of the utility model are as shown in the table I:

watch 1

Item	Unit of	Performance index
			Colour(s)	--	Black color (black)
Application temperature	℃	-20～180℃
			Total thickness	mm	0.6～2mm
Shielding energy efficiency	db	75～90db
			Retention force	Hour/inch	≥24
Peeling force	gf/25mm	＞1200
			Vertical resistor	Ω	＜0.3
Horizontal resistance	Ω	＜0.5
			Tensile strength	kg/25mm	Greater than 1.2

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a compound electrically conducts bubble is cotton which characterized in that: the novel fabric comprises first conductive cloth, foam and second conductive cloth, wherein the first conductive cloth and the second conductive cloth are respectively arranged on two sides of the foam, the foam and the foam are pressed and covered through flame-retardant hot melt adhesive to be formed, and the other side of the first conductive cloth is coated with insulating glue and is pressed and covered through release paper to be formed in a composite mode.

2. The composite conductive foam of claim 1, wherein: the first conductive cloth comprises a polyester fiber layer and a metal layer, and the metal layer covers two sides of the polyester fiber layer through electroplating.

3. The composite conductive foam of claim 2, wherein: the metal layer is a nickel metal layer or a copper metal layer.

4. The composite conductive foam of claim 1, wherein: electrically conductive cloth of second includes polyester fiber layer, first metal level, second metal level and inoxidizing coating, first metal level covers through electroplating polyester fiber layer both sides, the second metal level electroplating is in first metal level two sides, the inoxidizing coating grows or coats the second metal level surface, the internal surface of second metal level passes through fire-retardant hot melt adhesive with the bubble is cotton to be connected.

5. The composite conductive foam of claim 4, wherein: the first metal layer is a copper metal layer, the second metal layer is a nickel metal layer, and the protective layer is a graphene layer or a conductive carbon black layer.

6. The composite conductive foam of claim 1, wherein: the insulating glue is flame-retardant insulating glue.

7. The composite conductive foam as claimed in any one of claims 1 to 6, wherein: the thickness of the composite conductive foam is 0.6-2 mm.

8. The composite conductive foam of claim 7, wherein: and the composite conductive foam is wound into a coiled material.

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