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Special flexible transparent optical adhesive for silver nanowire transparent conductive film and preparation method for special flexible transparent optical adhesive

A transparent conductive film and nano-silver wire technology, which is applied in the direction of equipment for manufacturing conductive/semiconductive layers, nanotechnology, nanotechnology, etc., can solve the problem of poor matching of nano-silver wires, poor flexibility, and overall device flexibility limitations, etc. No yellowing of weather resistance, excellent aging resistance and weak interaction

Active Publication Date: 2020-02-21
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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  • Special flexible transparent optical adhesive for silver nanowire transparent conductive film and preparation method for special flexible transparent optical adhesive
  • Special flexible transparent optical adhesive for silver nanowire transparent conductive film and preparation method for special flexible transparent optical adhesive
  • Special flexible transparent optical adhesive for silver nanowire transparent conductive film and preparation method for special flexible transparent optical adhesive

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 a silver nanowire transparent conductive film and a preparation method for the special flexible transparent optical adhesive. The optical adhesive is prepared through the following steps: uniformly mixing a polyurethane acrylic prepolymer, an active diluent, a photoinitiator, tackifying resin, a light stabilizer, an antioxidant, an ultraviolet absorbent and an infrared absorbent, carrying out coating so as to form a film, carrying out UV curing, laminating a release film, and carrying out rolling. The optical adhesiveprovided by the invention has good flexibility, is matched with a silver nanowire, and has a certain protection effect on the silver nanowire; meanwhile, the viscosity between the optical adhesive anda silver nanowire conducting layer is adjustable, so the stripping force is large; and the silver nanowire conducting layer formed on a substrate can be directly stripped off and adhered to the surface of the optical adhesive through adhesion of the optical adhesive, so a prepared conducting film does not need to use the substrate, and better flexible display is achieved.

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 Applications(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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