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Conductive film replacing aluminum foil, and preparation method thereof

A conductive film and aluminum foil technology, which is applied to the conductive layer on the insulating carrier, equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, etc., can solve the problem that the metal plating layer is easy to fall off, the conductive film conduction effect is not good, Unstable barrier properties and other issues, to achieve good ductility and strength, improve the problem of easy falling off, stabilize chemical properties and temperature resistance

Active Publication Date: 2021-01-08
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

Experimental program
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Effect test

Embodiment 1

[0040] 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.

[0041] The preparation method of described conductive film is:

[0042] 1) carry out the surface plasma treatment that power is 5kW to the surface of PET layer;

[0043] 2) Preheat the evaporation boat, and evacuate the chamber of the evaporation machine to 10 -5 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;

[0044] 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

[0047] 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.

[0048] The preparation method of described conductive film is:

[0049] 1) The surface of the OPP layer is subjected to surface plasma treatment with a power of 7kW;

[0050] 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;

[0051] 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

[0054] 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.

[0055] The preparation method of described conductive film is:

[0056] 1) carry out the surface plasma treatment that power is 6kW to the surface of PET layer;

[0057] 2) Preheat the evaporation boat, and evacuate the chamber of the evaporation machine to 10 -5 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;

[0058] 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 comprises metal layers, middle reinforcing layers and apolymer film layer, wherein the middle reinforcing layers are arranged on the two sides of the polymer film layer, the metal layers are arranged on the outer sides of the middle reinforcing layers, the surface sheet resistance of the conductive film is 10-80 m omega, the tensile strength is 150-350 Mpa, the elongation at break is 75-150%, the elastic modulus is 3500-5500, the binding force between the middle reinforcing layer and the metal layer is greater than 2 N / 15 mm, the binding force between the polymer film layer and the middle reinforcing layer is 2-4 N / 15 mm, the water vapor transmission rate is less than 0.2 g / (m<2>.24 h), and the oxygen transmission rate is less than 0.005 cm <3> / (m<2>.24 h). According to the invention, the conductive film replacing the aluminum foil can be made to be very light and thin, the thickness is 3-20 microns, meanwhile, a plating layer is high in binding force, not prone to oxidation and falling, high in barrier property and good in conductivity,the conductive film has the advantages of being light, thin, high in strength and good in toughness, and the problems that pure aluminum foil is large in hardness and tension strength, small in tearing strength, extremely easy to tear, high in cost, large in weight and the like are effectively solved; and the conductive film can be used for replacing the traditional aluminum foil to be applied tothe fields of optical films, thermal protection coatings, shielding films, high-end food / medicine / cosmetic packaging with better barrier property requirements, electronic devices, batteries and the like.

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 Applications(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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