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Shielding type plastic film and composite belt prepared therefrom

A plastic film and shielding technology, which is applied in the fields of magnetic field/electric field shielding, synthetic resin layered products, electrical components, etc., can solve the problem of poor adhesion between plastic film and sheath or metal, inconsistent functions, and low electrical conductivity, etc. question

Pending Publication Date: 2020-05-15
JIANGSU KEMAITE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the film has a certain degree of adhesion to the aluminum layer and the outer layer is a semiconductive layer, the conductivity of the inner layer and the middle layer is not high, that is, the components and functions of the inner, middle and outer layers of the film are inconsistent, and only the outer layer has good electrical conductivity
[0005] Generally, in order to make the plastic film conductive, a certain amount of conductive filler must be added, however, the added conductive filler makes the adhesion between the plastic film and the sheath or metal not high

Method used

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  • Shielding type plastic film and composite belt prepared therefrom
  • Shielding type plastic film and composite belt prepared therefrom
  • Shielding type plastic film and composite belt prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A kind of composite tape, the structure is to be provided with shielding type plastic film layer on one side of metal layer, wherein metal layer is aluminum foil, the preparation method of composite tape comprises the following steps:

[0068] 1) Wet ball milling of metal oxides, Fe 2 o 3 and NiO according to the mass ratio of 1.08:2.35, the total mass of metal oxides and anhydrous ethanol according to the mass ratio of 2:1, the total mass of grinding balls and metal oxides according to the mass ratio of 13:1.1, and then the weighed grinding balls Put it into the grinding jar, then add Fe 2 o 3 , NiO and absolute ethanol, and finally ball milled at a speed of 200r / min for 10h.

[0069] 2) Sieving the metal oxide, drying the metal oxide obtained in step 1) in an oven at 110° C. for 4 hours, and then sieving through a 250-mesh gauze.

[0070] 3) Surface treatment of hollow glass microspheres, weighing the surface treatment liquid and hollow glass microspheres accordin...

Embodiment 2

[0082] A kind of composite tape, the structure is to be provided with shielding type plastic film layer on one side of metal layer, wherein metal layer is aluminum foil, the preparation method of composite tape comprises the following steps:

[0083] 1) Wet ball milling of metal oxides, Fe 2 o 3 and NiO according to the mass ratio of 1.08:2.35, the total mass of metal oxides and anhydrous ethanol according to the mass ratio of 2:1, the total mass of grinding balls and metal oxides according to the mass ratio of 13:1.1, and then the weighed grinding balls Put it into the grinding jar, then add Fe 2 o 3 , NiO and absolute ethanol, and finally ball milled at a speed of 200r / min for 10h.

[0084] 2) Sieving the metal oxide, drying the metal oxide obtained in step 1) in an oven at 110° C. for 4 hours, and then sieving through a 250-mesh gauze.

[0085] 3) Surface treatment of hollow glass microspheres, weighing the surface treatment liquid and hollow glass microspheres accordin...

Embodiment 3

[0097] A kind of composite tape, the structure is that a shielding type plastic film layer is arranged on one side of the metal layer, wherein the metal layer is aluminum foil, and the preparation method of the composite tape comprises the following steps:

[0098] 1) Wet ball milling of metal oxides, Fe 2 o 3 and NiO according to the mass ratio of 1.08:2.35, the total mass of metal oxides and anhydrous ethanol according to the mass ratio of 2:1, the total mass of grinding balls and metal oxides according to the mass ratio of 13:1.1, and then the weighed grinding balls Put it into the grinding jar, then add Fe 2 o 3 , NiO and absolute ethanol, and finally ball milled at a speed of 200r / min for 10h.

[0099] 2) Sieving the metal oxide, drying the metal oxide obtained in step 1) in an oven at 110° C. for 4 hours, and then sieving through a 250-mesh gauze.

[0100] 3) Surface treatment of hollow glass microspheres, weighing the surface treatment liquid and hollow glass microsph...

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Abstract

The invention belongs to the field of shielding materials, and relates to a shielding type plastic film and a composite belt prepared therefrom. The composite belt comprises a metal layer and a shielding type plastic film layer at least arranged on one side of the metal layer. The shielding type plastic film layer comprises the following components in parts by weight: 55-69 parts of EVA, 10-15 parts of PE-g-MAH, 8-12 parts of C5 petroleum resin, 13-18 parts of SBS, 10-15 parts of a self-made conductive filler, 3-5 parts of a lubricant, 0.5-1 part of an antioxidant and 0.3-0.5 part of an anti-copper agent. The shielding type plastic film layer has an excellent conductive shielding performance, the composite belt prepared by from the film has the adhesion of a conventional composite belt, when the composite belt longitudinally wraps or wraps a cable core, the overlapping positions can be bonded together in a hot mode, the composite belt can be bonded with a sheath, reliable damp-proof and protective effects are provided for the cable, and the two sides of the composite belt both have a shielding effect.

Description

technical field [0001] The invention belongs to the field of shielding materials, and relates to a shielding plastic film and a composite tape prepared therefrom. Background technique [0002] In order to meet the requirements of moisture-proof, shielding and protection of wires and cables, people will use metal-plastic composite tapes in wires and cables. Usually, the metal-plastic composite tape is made by covering the surface of the plastic film with a metal layer or covering the surface of the metal foil with a plastic film, which not only has a certain tensile strength, but also plays a shielding role. However, the plastic film is insulating and non-conductive. If an insulating plastic film is attached to one or both sides of the metal, the composite tape will form a winding current when wrapping the cable, which affects the electromagnetic shielding effect to a certain extent. . In order to solve the problem of the flow around the metal-plastic composite tape and imp...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08L57/02C08L53/02C08K9/10C08K7/28C08K3/08C08J5/18H05K9/00B32B15/20B32B27/30B32B27/32B32B27/20B32B27/18B32B15/082B32B15/085B32B33/00
CPCC08J5/18H05K9/0098B32B15/20B32B27/306B32B27/32B32B27/20B32B27/18B32B15/082B32B15/085B32B33/00C08J2323/08C08J2451/06C08J2457/02C08J2453/02C08K9/10C08K7/28C08K2003/0806C08K2003/0856C08K2003/0862C08K2201/001B32B2307/202B32B2307/212
Inventor 虞家桢
Owner JIANGSU KEMAITE TECH DEV CO LTD
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