Unlock instant, AI-driven research and patent intelligence for your innovation.

A led curing conductive ink for pet film

A technology of conductive ink and photoinitiator, which is applied in ink, applications, household appliances, etc. It can solve the problems of poor conductivity of conductive ink, large specific surface area of ​​nano-silver powder, and easy agglomeration of particles, so as to achieve excellent conductive effect and save resources and time, the effect of fast curing speed

Active Publication Date: 2021-07-16
GUANGDONG HEYGEY LIGHT CURING MATERIALS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional conductive ink usually directly adds unmodified nano-silver powder into the system. However, due to the large specific surface area, large number of surface atoms, high surface energy, and a large number of surface defects and suspension parts of nano-silver powder, it is very easy to occur between particles. Agglomeration, after agglomeration, it is difficult to depolymerize mechanically. Therefore, the direct use of unmodified nano-silver powder to prepare conductive ink has poor conductivity
[0004] In addition, the traditional method usually adopts heating and curing, and the heating temperature is as high as 120-200°C, but the heat distortion temperature of PET film is about 85°C, so the traditional heating and curing method is not suitable for PET film used in the field of fingerprint identification
Moreover, since the viscosity and rheology of the conductive ink in the prior art have not achieved the desired effect, the circuit printed by the conductive ink has insufficient precision after the ink is cured, and it is necessary to improve the precision of the circuit by laser etching and other methods. Adding a process, wasting cost and reducing production efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A led curing conductive ink for pet film
  • A led curing conductive ink for pet film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of LED curable conductive ink for PET film. Its components are composed of 10 parts of epoxy acrylate, 15 parts of polyurethane acrylate, 55 parts of modified flake nano-silver powder, and 6 parts of tripropylene glycol diacrylate. , 6 parts of neopentyl glycol diacrylate, 2 parts of phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide, 2 parts of triphenylsulfonium salt, 0.4 parts of TEGOGlide432 leveling agent, TEGO Dispers 685 dispersant 3 parts, TEGO Airex 900 defoamer 0.6 parts.

[0036] The preparation method of described modified flaky nano-silver powder is as follows:

[0037](1) Make a solution of 10 parts of water and 90 parts of absolute ethanol, add 20 parts of silane coupling agent KH550 into the solution under ultrasonic vibration, and pre-hydrolyze for 20 minutes with ultrasonic vibration;

[0038] (2) Add 400 parts of flaky nano-silver powder into a high-speed heating mixer, raise the temperature to 80°C and stir for 5 minutes, then add KH550 hydr...

Embodiment 2

[0043] An LED curable conductive ink for PET film, its components are composed of: 10 parts of epoxy acrylate, 20 parts of polyurethane acrylate, 50 parts of modified flake nano-silver powder, and 8 parts of tripropylene glycol diacrylate , 3 parts of hydroxyethyl methacrylate, 3 parts of isopropylthioxanthone, 2 parts of η6-cumyl ferrocene(II) hexafluorophosphate, 1 part of TEGO Glide 432 leveling agent, 1 part of TEGO Dispers 685 3 doses.

[0044] The preparation method of described modified flaky nano-silver powder is as follows:

[0045] (1) Make a solution of 10 parts of water and 90 parts of absolute ethanol, add 20 parts of silane coupling agent KH550 into the solution under ultrasonic vibration, and pre-hydrolyze for 10 minutes with ultrasonic vibration;

[0046] (2) Add 334 parts of flaky nano-silver powder into a high-speed heating mixer, raise the temperature to 80°C and stir for 5 minutes, then add KH550 hydrolyzate dropwise, and continue stirring at 80°C for 5 mi...

Embodiment 3

[0051] A kind of LED curable conductive ink for PET film, its components are composed of: 5 parts of epoxy acrylate, 15 parts of polyurethane acrylate, 60 parts of modified flake nano-silver powder, propoxy neopentyl glycol di 7 parts of acrylate, 5 parts of hydroxyethyl methacrylate, 3 parts of isopropylthioxanthone, 2 parts of dialkylphenacylmethylsulfonium salt, 0.4 part of TEGO Glide 432 leveling agent, TEGO Dispers 685 2 parts of dispersant, 0.6 parts of TEGO Airex 900 defoamer.

[0052] The preparation method of described modified flaky nano-silver powder is as follows:

[0053] (1) Make a solution of 10 parts of water and 90 parts of absolute ethanol, add 20 parts of silane coupling agent KH550 into the solution under ultrasonic vibration, and pre-hydrolyze for 30 minutes with ultrasonic vibration;

[0054] (2) Add 666 parts of flaky nano-silver powder into a high-speed heating mixer, heat up to 80°C and stir for 5 minutes, then add KH550 hydrolyzate dropwise, and cont...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heat deflection temperatureaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of conductive inks, in particular to an LED curable conductive ink used for PET films. The conductive ink is composed of the following components in terms of mass percentage: 20-35% polymerizable prepolymer, 50-60% modified flake nano-silver powder, 6-12% active monomer, and 1-5% photoinitiator , Other additives 1‑5%. Conductive ink provided by the invention uses the mixture of epoxy acrylate and urethane acrylate as a polymerizable prepolymer, which has faster curing speed and better adhesion; the ring-opening effect of epoxy acrylate in the polymerization process can be Make up for the volume shrinkage that occurs during the polymerization of polyurethane acrylate, and improve the accuracy of printed circuits; use silane coupling agent KH550 to modify the flake nano-silver powder as a conductive filler, and introduce organic groups on the surface of the flake-shaped nano-silver powder modified by KH550 , improve the dispersion of flake nano-silver powder in the organic system, which is conducive to the formation of conductive pathways, and then improve the conductivity of the system; the curing temperature is low, suitable for printing precise circuits on PET films.

Description

technical field [0001] The invention belongs to the field of conductive ink, and in particular relates to an LED curing conductive ink used for PET films. Background technique [0002] With the development of science and technology and the rapid development of mobile phone screen unlocking technology, fingerprint recognition mobile phones have occupied almost all markets. Fingerprint recognition usually uses optical, capacitive, temperature difference sensing and ultrasonic methods. The most widely used fingerprint recognition method for mobile phones is capacitive, in which the PET film printed with conductive ink circuit plays a key role in the accuracy and sensitivity of recognition. , not only need to have good conductivity, but also need good adhesion, flexibility, wear resistance and so on. [0003] Conductive ink is a paste ink made of conductive materials dispersed in the binder, which has a certain conductive effect. Traditional conductive ink usually directly add...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/52C09D11/101C09D11/102C09D11/03
CPCC09D11/03C09D11/101C09D11/102C09D11/52
Inventor 彭健华吴勇蒋卫华郏锐
Owner GUANGDONG HEYGEY LIGHT CURING MATERIALS