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UV (Ultraviolet) curing nanosilver wire sizing agent for touch screen and preparation method thereof

A nano-silver wire and touch screen technology, applied in conductive coatings, polyurea/polyurethane coatings, conductive materials dispersed in non-conductive inorganic materials, etc., can solve problems such as changing the aspect ratio of nano-silver wires, and achieve good industrialization prospects , good dispersion effect, simple process effect

Active Publication Date: 2017-06-13
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, physical and mechanical dispersion methods are difficult to disperse the powder at the nanoscale, and strong dispersion will also change the aspect ratio of nano silver wires

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Preparation of silver nanowire / urethane acrylate composite: add 0.01g of sodium chloride to 1.5g of ethylene glycol, stir at room temperature until the sodium chloride is completely dissolved, then add 1g of aliphatic urethane acrylate prepolymer ( Changxing 6106) Stir evenly at room temperature (solution A); add 1g of silver nitrate to 1.5g of ethylene glycol and stir evenly at room temperature (prepared in the dark, solution B), add solution A dropwise to solution B, and continue stirring at room temperature After 15 minutes until the system is uniform, the prepared mixed solution is poured into a pressure-resistant tank, and reacted in an electric constant temperature drying oven at 140°C for 7 hours. After the reaction is completed, the system is cooled to normal temperature, centrifuged on a centrifuge at a speed of 500r / min, and the ethylene glycol supernatant is taken out, and the remaining part is the precursor nano-silver wire / urethane acrylate composite.

[00...

Embodiment 2

[0068] Preparation of silver nanowire / urethane acrylate composite: add 0.03g of sodium chloride to 2.5g of ethylene glycol, stir at room temperature until the sodium chloride is completely dissolved, then add 2.5g of aliphatic urethane acrylate prepolymer (Cytec EB284) (solution A); Add 3g of silver nitrate to 2.5g of ethylene glycol and stir evenly at room temperature (prepare in the dark, solution B), add solution A dropwise to solution B, and continue stirring at room temperature for 15 minutes After the system is uniform, pour the prepared mixed solution into a pressure tank, and react in an electric constant temperature drying oven at 150°C for 8 hours. After the reaction is completed, the system is cooled to normal temperature, centrifuged on a centrifuge at a speed of 500r / min, and the ethylene glycol supernatant is taken out, and the remaining part is the precursor nano-silver wire / urethane acrylate composite.

[0069] Take the above precursor, add other components, an...

Embodiment 3

[0085] Preparation of nanosilver wire / urethane acrylate composite: add 0.05g of sodium chloride to 3.5g of ethylene glycol, stir at room temperature until the sodium chloride is completely dissolved, then add 4g of aliphatic urethane acrylate prepolymer ( Cytec EB284) (solution A); add 5g of silver nitrate to 3.5g of ethylene glycol and stir evenly at room temperature (prepare in the dark, solution B), add solution A dropwise to solution B, and continue stirring at room temperature for 15 minutes to The system is uniform, and then the prepared mixed solution is poured into a pressure tank, and reacted in an electric constant temperature drying oven at 160°C for 9 hours. After the reaction is completed, the system is cooled to normal temperature, centrifuged on a centrifuge at a speed of 500r / min, and the ethylene glycol supernatant is taken out, and the remaining part is the precursor nano-silver wire / urethane acrylate composite.

[0086] Take the above precursor, add other co...

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PUM

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Abstract

The invention discloses an UV (Ultraviolet) curing nanosilver wire sizing agent for a touch screen and a preparation method thereof. The preparation method is characterized by adopting a photo-active prepolymer as a growth template of a nanosilver wire and polyol as a reducing agent in a silver nitrate / polyol system, carrying out centrifugal separation on the system after completing a reaction, and removing supernatant of the polyol, thus preparing a compound of a nanosilver wire / photo-active prepolymer. A photo-initiation monomer, a photo-initiator, a solvent and relevant adjuvants are added in the compound, and the UV curing nanosilver wire sizing agent can be prepared into photo-initiated and cured products of conducting printing ink or conducting adhesive and the like according to needs. According to a nanosilver wire compound prepared by the invention, the nanosilver wire has good dispersity in the system by utilizing adsorbing and coating of the prepolymer on the nanosilver wire, and the uniformity is good; meanwhile, the UV curing nanosilver wire sizing agent can be directly used for blending products, the process is simple, and a good industrial prospect is obtained.

Description

technical field [0001] The invention relates to the field of nano-silver wires, in particular to a UV-cured nano-silver wire slurry for a touch screen and a preparation method thereof. Background technique [0002] As a new type of human-computer interaction interface, touch screen is widely used in various digital information systems, forming a huge market. Touch screens usually use ITO (Indium Tin Oxide) as transparent electrodes, but metal indium deposits have become less and less, and will be exhausted around 2020. Therefore, major companies, universities and research institutions all over the world are trying to find a substitute for ITO as a new transparent electrode material. [0003] Judging from the current research progress at home and abroad, new ITO replacement materials mainly focus on five technologies, including metal mesh technology (Metal Mesh), carbon nanotube technology, conductive polymer technology, graphene technology and nano silver wire technology. ...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D5/24H01B1/22
Inventor 贾志欣吴良辉周盾白罗远芳贾德民
Owner SOUTH CHINA UNIV OF TECH
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