Conductive film replacing aluminum foil and preparation method thereof

A technology of conductive film and aluminum foil, applied to the conductive layer on the insulating carrier, equipment for manufacturing conductive/semiconductive layer, cable/conductor manufacturing, etc., can solve the problem of unstable barrier performance, easy falling off of metal coating, conductive film Poor electrical conductivity and other problems, to achieve the effect of improving flatness, good ductility and strength, and improving the problem of easy falling off

Active Publication Date: 2021-10-19
浙江柔震科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, a metal coating with a certain thickness directly evaporated on the polymer film is easy to fall off, resulting in poor conductivity of the conductive film, and at the same time, the barrier performance is also relatively unstable.

Method used

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  • Conductive film replacing aluminum foil and preparation method thereof
  • Conductive film replacing aluminum foil and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039]A conductive film replacing aluminum foil, comprising a 6 μm thick PET layer, a 50nm thick aluminum oxide layer evaporated on both sides of the PET layer, and a 500nm thick metal aluminum layer evaporated outside the aluminum oxide layer.

[0040] The preparation method of described conductive film is:

[0041] 1) carry out the surface plasma treatment that power is 5kW to the surface of PET layer;

[0042] 2) Preheat the evaporation boat, and evacuate the chamber of the evaporation machine to 10 -7 mbar, control the vacuuming time to be 10min, and then carry out the middle reinforcement layer on both sides of the PET layer in step 1), the thickness of single-coated aluminum oxide is 50nm, the evaporation boat type wire feeding speed is 500mm / min, and the cooling temperature is -10 ℃, membrane speed 12m / s;

[0043] 3) Evaporate a metal aluminum layer on the outer side of the intermediate reinforcement layer obtained in step 2), the heating method is resistance heating,...

Embodiment 2

[0046] A conductive film that replaces aluminum foil, including a 4.5 μm thick OPP layer, a nickel-chromium alloy intermediate reinforcement layer with a total thickness of 100 nm is coated on both sides of the OPP layer by magnetron sputtering, and a total thickness of 1000 nm is vacuum-evaporated on the outside of the intermediate layer. Metallic aluminum layer.

[0047] The preparation method of described conductive film is:

[0048] 1) The surface of the OPP layer is subjected to surface plasma treatment with a power of 7kW;

[0049] 2) Carry out magnetron sputtering on both sides of the OPP layer in step 1) to coat the nickel-chromium alloy intermediate layer, the magnetron sputtering process parameters are: power 150kW, substrate transmission speed 8m / min, argon flow speed 30L / min , ion source voltage 250V;

[0050] 3) Evaporate a metal aluminum layer on the outer side of the middle reinforcing layer obtained in step 2). The evaporation coating used is resistance heati...

Embodiment 3

[0053] A conductive film replacing aluminum foil, comprising a 12 μm thick PET layer, an 80nm thick aluminum oxide layer vacuum-evaporated on both sides of the PET layer, and a 1000nm thick metal aluminum layer vacuum-evaporated outside the aluminum oxide layer.

[0054] The preparation method of described conductive film is:

[0055] 1) carry out the surface plasma treatment that power is 6kW to the surface of PET layer;

[0056] 2) Preheat the evaporation boat, and evacuate the chamber of the evaporation machine to 10 -3 mbar, control the vacuuming time to be 10min, and then carry out the middle reinforcement layer of evaporation coating on both sides of the PET layer in step 1), the thickness of single plating aluminum oxide is 80nm, the speed of evaporation boat type wire feeding is 500mm / min, and the cooling system temperature is - 10°C, the film running speed is 8m / s;

[0057] 3) Evaporate a metal aluminum layer on the outer side of the intermediate reinforcing layer o...

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Abstract

The invention discloses a conductive film replacing aluminum foil and a preparation method thereof. The conductive film replacing aluminum foil includes a metal layer, an intermediate reinforcing layer and a polymer film layer, and the intermediate reinforcing layer is arranged on both sides of the polymer film layer. , the metal layer is arranged on the outside of the middle reinforcing layer, the surface resistance of the conductive film is 10-80mΩ, the tensile strength is 150-350Mpa, the elongation at break is 75-150%, and the elastic modulus is 3500- 5500, the bonding force between the middle reinforcement layer and the metal layer is greater than 2N / 15mm, the bonding force between the polymer film layer and the middle reinforcement layer is 2‑4N / 15mm, and the water vapor transmission rate is <0.2g / (m 2 .24h), oxygen transmission rate <0.005cm 3 / (m 2 .24h). This conductive film that replaces aluminum foil can be made very light and thin, with a thickness of 3-20 microns. At the same time, the coating has a strong bonding force, is not easy to oxidize and fall off, has high barrier properties, good conductivity, and has light, thin, high strength and good toughness. Features, effectively solve the problems of high hardness and high tensile strength of pure aluminum foil, but small tear strength, easy to tear, high cost and heavy weight. It can be used to replace traditional aluminum foil in the fields of optical film, thermal protective coating, shielding film, high-end food / drug / cosmetic packaging with better barrier properties, electronic devices and batteries.

Description

technical field [0001] The invention relates to the field of polymer films, in particular to a conductive film replacing aluminum foil and a preparation method thereof Background technique [0002] Under the background that my country has become the second largest consumer of aluminum foil after the United States, pure aluminum foil has been widely used in life, industry and other fields, especially high-end packaging, electrolytic capacitors, heat insulation and other materials. The surface of aluminum foil is extremely clean and hygienic, so it is not easy to grow bacteria; as a non-toxic packaging material, it can be in direct contact with food without causing harm to human health; at the same time, aluminum foil is a tasteless and odorless packaging material, not It will make the packaged food have any peculiar smell; in addition, the aluminum foil itself is not volatile, and it and the packaged food will not dry or shrink; no matter at high temperature or low temperatur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00C23C14/26C23C14/30C23C14/35C23C14/06C23C14/08C23C14/10C23C14/16C23C14/18C23C14/20C23C14/02
CPCC23C14/022C23C14/0605C23C14/0635C23C14/0652C23C14/081C23C14/10C23C14/16C23C14/165C23C14/18C23C14/185C23C14/20C23C14/205C23C14/26C23C14/30C23C14/35H01B5/14H01B13/0026
Inventor 吴明忠汪茹黄云辉伽龙曾祥平焦鑫鹏
Owner 浙江柔震科技有限公司
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