A kind of conductive film and preparation method thereof

A technology of conductive film and conductive coating, which is applied in the direction of cable/conductor manufacturing, conductive layer on insulating carrier, circuit, etc., which can solve the problems of uneven surface conductivity, low production yield, and high cost

Active Publication Date: 2016-08-17
杨佳雯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inadequacies of the existing process: 1. High energy consumption and high cost; 2. Uneven surface conductivity of the film; 3. Low transparency; 4. Low production yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] A conductive film, comprising a corona-treated PET substrate layer on the surface, the PET substrate layer is coated with a conductive paint layer, and the conductive paint layer includes the following raw materials in weight percentage:

[0094] Absolute Ethanol 50%

[0095] Terpineol 5%

[0096] Dimethylacetamide 3.5%

[0097] Acetyl Tributyl Citrate 3%

[0098] Silicone oil 6%

[0099] Polyethylene glycol 400 4%

[0100] Division 85 3%

[0101] Ethyl cellulose 3%

[0102] Polyimide resin 1%

[0103] Acrylic resin 1.5%

[0104] 30nm silver powder 4%

[0105] 200nm silver powder 16%.

[0106] A method for preparing a conductive film, comprising the following process steps:

[0107] (1) Material selection: select a PET substrate with a corona-treated surface with a light transmittance of 92% and a thickness of 250 μm;

[0108] (2) Preparation of conductive coating: Weigh the above-mentioned raw materials in proportion, put the above-mentioned nano-silver powd...

Embodiment 2

[0112] A conductive film, comprising a corona-treated PET substrate layer on the surface, the PET substrate layer is coated with a conductive paint layer, and the conductive paint layer includes the following raw materials in weight percentage:

[0113] Absolute Ethanol 57%

[0114] Terpineol 3%

[0115] Dimethylacetamide 5%

[0116] Acetyl Tributyl Citrate 2%

[0117] Silicone oil 4%

[0118] Macrogol 400 2%

[0119] Span 85 2.5%

[0120] Ethylcellulose 2.5%

[0121] Polyimide resin 0.8%

[0122] Acrylic resin 1.2%

[0123] 20nm silver powder 6%

[0124] 150nm silver powder 14%.

[0125] A method for preparing a conductive film, comprising the following process steps:

[0126] (1) Material selection: select a PET substrate with a corona-treated surface with a light transmittance of 93% and a thickness of 200 μm;

[0127] (2) Preparation of conductive coating: Weigh the raw materials of the above formula in proportion, put the nano-silver powder in an oven at 100°C ...

Embodiment 3

[0131] A conductive film, comprising a corona-treated PET substrate layer on the surface, the PET substrate layer is coated with a conductive paint layer, and the conductive paint layer includes the following raw materials in weight percentage:

[0132] Absolute Ethanol 60%

[0133] Terpineol 2%

[0134] Dimethylacetamide 6%

[0135] Acetyl Tributyl Citrate 1%

[0136] Silicone oil 2%

[0137] Macrogol 400 1.5%

[0138] Division 85 2%

[0139] Ethylcellulose 1.5%

[0140] Polyimide resin 1%

[0141] Acrylic resin 1%

[0142] 25nm silver powder 4%

[0143] 200nm silver powder 18%.

[0144] A method for preparing a conductive film, comprising the following process steps:

[0145] (1) Material selection: select a PET substrate with a corona-treated surface with a light transmittance of 94% and a thickness of 180 μm;

[0146] (2) Preparation of conductive coating: Weigh the raw materials of the above formula in proportion, put the nano-silver powder in an oven at 100°C ...

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Abstract

The invention relates to the technical field of a conductive film, and especially relates to a conductive film and a preparation method thereof. The conductive film comprises a PET base material layer, the surface of which is subjected to corona treatment. The surface of the PET base material layer is coated with a conductive coating layer. The conductive coating layer comprises raw materials by the following weight percentage: 50-70% absolute ethyl alcohol, 2-5 % terpilenol, 3-8 % dimethylacetamide, 1-3 % acetyl tributyl citrate, 2-8% cementing agent, 1-5 % polyethylene glycol 400, 2-3% Span 85, 1.5-3% ethyl cellulose, 0.5-2% polyimide resin, 0.5-1.5 % polyester resin, 10-18% 150-300 nanometer silver powders, and 3-8% 20-35 nanometer silver powders. The conductive film in the invention is stable in conductivity on the surface of the formed film, low in resistivity, high in light transmittance and strong in adhesive force; and the coating process of the conductive film is simple and mature, convenient to operate, low in cost, and convenient to popularize and apply.

Description

technical field [0001] The invention relates to the technical field of conductive films, in particular to a conductive film and a preparation method thereof. Background technique [0002] At present, the industrial production of transparent conductive films is still dominated by oxides. Oxide transparent conductive films are widely used as transparent electrodes in flat-panel displays and solar energy due to their excellent photoelectric properties, such as low resistivity and high visible light transmittance. Batteries, touch screens, heatable glass windows, etc. At present, ITO (tin-doped indium oxide) thin film is the most widely used in practice, and its target preparation and film formation process are relatively mature. However, due to the In 2 0 3 The price is expensive, the cost is high, and indium is highly toxic, which will be harmful to the human body during preparation and application; in addition, the atomic weights of Sn and In are large, and they are easy t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B1/22H01B13/00
Inventor 陈克勇朱文峰杨忠芝虞礼森
Owner 杨佳雯
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