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A special flexible transparent optical adhesive for nano-silver wire transparent conductive film and preparation method thereof

A technology of transparent conductive film and nano-silver wire, which is applied in the equipment, nanotechnology, nanotechnology and other directions for manufacturing conductive/semi-conductive layers, which can solve the problem of poor flexibility, poor matching of nano-silver wires, and overall device flexibility limitation, etc. problem, to achieve the effects of excellent aging resistance, no yellowing in weather resistance, and weak interaction force

Active Publication Date: 2021-09-28
合肥微晶材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, although existing substrates have relatively better flexibility, such as CPI, their existence still limits the flexibility of the overall device.
At the same time, optical adhesives currently on the market are mainly used as supporting materials for ITO conductive films, which have the problems of poor flexibility and poor compatibility with nano-silver wires.

Method used

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  • A special flexible transparent optical adhesive for nano-silver wire transparent conductive film and preparation method thereof
  • A special flexible transparent optical adhesive for nano-silver wire transparent conductive film and preparation method thereof
  • A special flexible transparent optical adhesive for nano-silver wire transparent conductive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] First, the synthesis of polyurethane acrylic acid prepolymer specifically includes the following steps:

[0040] (a) Dehydration of raw materials: PEG-400, polyoxypropylene triol-600, 1,6-hexamethylene diisocyanate and hydroxyethyl acrylate are subjected to high-temperature vacuum dehydration treatment. The treatment conditions are: temperature 80°C, vacuum Degree 0.06-0.08MPa, time 3h.

[0041] (b) Reaction of polyol and isocyanate: in N 2 Under a protective environment, add 6.05 mol of the above-mentioned dehydrated 1,6-hexamethylene diisocyanate into the flask, mechanically stir at a speed of 500 r / min, while slowly heating to 60°C, and then add the dehydrated 4 mol PEG The mixed solution of -400 and 1mol polyoxypropylene triol -600 was added dropwise into the flask at a constant speed for 2 hours; after the dropwise addition was completed, the reaction was continued with insulation and stirring, and the -NCO value was titrated every 0.5 hours until the -NCO content...

Embodiment 2

[0047] First, the synthesis of polyurethane acrylic acid prepolymer specifically includes the following steps:

[0048] (a) Dehydration of raw materials: PPG-400, polyoxypropylene triol-600, 1,6-hexamethylene diisocyanate and hydroxyethyl acrylate are subjected to high-temperature vacuum dehydration treatment. The treatment conditions are: temperature 80°C, vacuum Degree 0.06-0.08MPa, time 3h.

[0049] (b) Reaction of polyol and isocyanate: in N 2 Under a protective environment, add 7.15 mol of the above-mentioned dehydrated 1,6-hexamethylene diisocyanate into the flask, mechanically stir at a speed of 500 r / min, while slowly heating to 60°C, and then put the dehydrated 5 mol of PPG The mixed solution of -400 and 1mol polyoxypropylene triol -600 was added dropwise into the flask at a constant speed for 2 hours; after the dropwise addition was completed, the reaction was continued with insulation and stirring, and the -NCO value was titrated every 0.5 hours until the -NCO cont...

Embodiment 3

[0055] First, the synthesis of polyurethane acrylic acid prepolymer specifically includes the following steps:

[0056] (a) Dehydration of raw materials: PPG-400, polyoxypropylene triol-600, 1,6-hexamethylene diisocyanate and hydroxyethyl acrylate are subjected to high-temperature vacuum dehydration treatment. The treatment conditions are: temperature 80°C, vacuum Degree 0.06-0.08MPa, time 3h.

[0057] (b) Reaction of polyol and isocyanate: in N 2 Under a protective environment, add 7.15 mol of the above-mentioned dehydrated 1,6-hexamethylene diisocyanate into the flask, mechanically stir at a speed of 500 r / min, while slowly heating to 60°C, and then put the dehydrated 5 mol of PPG The mixed solution of -400 and 1mol polyoxypropylene triol -600 was added dropwise into the flask at a constant speed for 2 hours; after the dropwise addition was completed, the reaction was continued with insulation and stirring, and the -NCO value was titrated every 0.5 hours until the -NCO cont...

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Abstract

The invention discloses a special flexible transparent optical adhesive for nano-silver wire transparent conductive film and a preparation method thereof. After uniformly mixing the UV absorber, UV absorber and IR absorber, it is coated to form a film and cured by UV, and then pasted with a release film and wound up. The optical adhesive of the present invention has good flexibility, matches with silver nanowires, and has a certain protective effect on silver nanowires, and the viscosity between the optical adhesive and the conductive layer of silver nanowires is adjustable, and the peeling force is large. The conductive layer of nano-silver wires formed on the substrate can be directly peeled off and adhered to the surface of the optical adhesive, so that the prepared conductive film does not need to use a substrate, thereby achieving better flexible display.

Description

technical field [0001] The invention relates to the field of display, in particular to a new flexible transparent optical glue specially used for nano-silver wire transparent conductive film. Background technique [0002] With the development of electronic displays towards large size and flexibility, the requirements for the flexibility of conductive films are getting higher and higher. At present, the ITO (indium tin oxide) transparent conductive film, which is used in the largest amount in the market, has the problems of high square resistance and poor flexibility, and is not suitable for large-size displays and flexible displays. The nano-silver wire in the new material has become the best substitute material for ITO due to its excellent comprehensive properties such as good optical properties, good flexibility and low square resistance. [0003] The conductive film based on nano silver wire is obtained by coating nano silver wire conductive ink on a substrate to form a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/16C09J11/06C09J7/30C09J7/10C08G18/48C08G18/67C08G18/73H01B13/00H01B5/14B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C08G18/4812C08G18/672C08G18/73C09J11/06C09J175/16C09J7/10C09J7/30H01B5/14H01B13/0026C08K5/132C08K5/3475
Inventor 张梓晗吕鹏杨锦张运奇
Owner 合肥微晶材料科技有限公司
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