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Electromagnetic shielding film with high air permeability suitable for 5G and preparation method thereof

A technology of electromagnetic shielding film and air permeability, which is applied in the fields of magnetic field/electric field shielding, films/sheets without carriers, electrical components, etc. Production cost, avoid environmental pollution, improve performance effect

Inactive Publication Date: 2019-01-08
江西华莲欣科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electromagnetic shielding film with high air permeability suitable for 5G, so as to solve the problems of poor air permeability, high defect rate, poor shielding efficiency and pollution to the ecological environment of the above electromagnetic shielding film

Method used

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  • Electromagnetic shielding film with high air permeability suitable for 5G and preparation method thereof

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Embodiment 1

[0023] An electromagnetic shielding film with high air permeability suitable for 5G, including successively connected carrier release layer, black insulating layer, alloy shielding layer, conductive bonding layer, and protective release layer, the alloy shielding layer is expressed in parts by mass In total, the following raw materials are included: 33 parts of graphene, 25 parts of alloy powder, and 42 parts of epoxy resin; the black insulating layer is calculated in parts by mass, including the following raw materials: 60 parts of insulating resin, 10 parts of curing agent, accelerator 3 parts, 30 parts of filler, 20 parts of flame retardant.

[0024] After mixing, stirring and filtering the proportion of the black insulating layer, apply the prepared solution to the release layer of the carrier, and after drying, the black insulating layer is obtained; then mix the formula of the alloy shielding layer according to the proportion, stir and filter After coating to the black i...

Embodiment 2

[0026] An electromagnetic shielding film with high air permeability suitable for 5G, including successively connected carrier release layer, black insulating layer, alloy shielding layer, conductive bonding layer, and protective release layer, the alloy shielding layer is expressed in parts by mass In total, it includes the following raw materials: 35 parts of graphene, 24 parts of alloy powder, and 41 parts of epoxy resin; the black insulating layer includes the following raw materials in parts by mass: 60 parts of insulating resin, 10 parts of curing agent, and 10 parts of accelerator 3 parts, 30 parts of filler, 20 parts of flame retardant.

[0027] The preparation method is as in Example 1.

Embodiment 3

[0029] An electromagnetic shielding film with high air permeability suitable for 5G, including successively connected carrier release layer, black insulating layer, alloy shielding layer, conductive bonding layer, and protective release layer, the alloy shielding layer is expressed in parts by mass In total, it includes the following raw materials: 38 parts of graphene, 22 parts of alloy powder, and 40 parts of epoxy resin; the black insulating layer includes the following raw materials in parts by mass: 60 parts of insulating resin, 10 parts of curing agent, and 10 parts of accelerator 3 parts, 30 parts of filler, 20 parts of flame retardant.

[0030] The preparation method is as in Example 1.

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Abstract

The invention discloses an electromagnetic shielding film with high air permeability suitable for 5G. The electromagnetic shielding film comprises a carrier release layer, a black insulation layer, analloy shielding layer, a conductive adhesive layer and a protective release layer which are connected in sequence; in parts by mass, the black insulation layer comprises 5 to 85 parts of insulation resin, 2 to 18 parts of a curing agent, 0.1 to 12 parts of an accelerator, 5 to 40 parts of a filler, 8 to 45 parts of a flame retardant, 5 to 20 parts of black masterbatch and 1 to 10 parts of matte powder; the alloy shield layer comprises 10 to 50 parts of graphene, 10 to 30 parts of alloy powder, and 10 to 35 parts of epoxy resin. The invention also discloses a preparation method of the electromagnetic shielding film. The electromagnetic shielding film prepared by the invention has relatively high electromagnetic shielding performance, and the preparation method is environmentally-friendly,also can reduce the cost, and has relatively high commercial value.

Description

technical field [0001] The invention relates to the technical field of shielding materials, in particular to an electromagnetic shielding film with high air permeability suitable for 5G. Background technique [0002] With the rapid development of the times, the electromagnetic shielding film is more and more widely used in the field of FPC flexible circuit boards, especially in the 5G era, the shielding efficiency of the electromagnetic shielding film is greatly improved, and the air permeability is relatively poor when the thickness of the conventional shielding layer is thickened. Foaming occurs under the conditions of hot pressing and reflow soldering, resulting in serious defects and scrapping during the manufacturing process. [0003] The existing electromagnetic shielding film is divided into a carrier film release layer, a black insulating layer, a metal shielding layer, a conductive adhesive layer, and a protective film release layer. The existing shielding layer ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/30C09J9/02C09J163/00H05K9/00
CPCC09J7/10C09J7/30C09J9/02C09J163/00C09J2463/00C09J2463/003H05K9/0081
Inventor 汪银杨侨华周志峰桑俊俸
Owner 江西华莲欣科技有限公司