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Carbon series conductive ink

A conductive ink and carbon-based technology, applied in inks, household utensils, applications, etc., can solve problems such as general conductivity, and achieve the effects of shortening working hours, reducing energy consumption, and shortening ball milling time

Inactive Publication Date: 2017-10-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its conductive performance is average, and the current market is in urgent need of a low-cost, carbon-based conductive ink with excellent conductivity.

Method used

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  • Carbon series conductive ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Ink 1: a carbon-based conductive ink, including the following components in parts by mass: 20 parts of two-component conductive filler composed of expanded graphite and conductive carbon black in a mass ratio of 3:1, epoxy resin 15 parts 2 parts of curing agent urea, curing accelerator DMP-30 is 0.3% of the amount of curing agent, 4 parts of mixing aids composed of film forming agent, defoamer and thixotropic agent in a mass ratio of 4:1:0.5 , and the rest is a mixed solvent composed of terpineol and ethanol in a mass ratio of 3:7. figure 1 It shows that the conductive particles on the surface of the ink dry film are fully contacted, the distance between the particles is smaller than the normal migration distance of atoms (about 10nm), and the conductive ink film can form a continuous conductive path along the direction of the applied electric field.

Embodiment 2

[0031] Ink 2: a carbon-based conductive ink, including the following components in parts by mass: a two-component conductive filler 30 composed of expanded graphite, conductive carbon black and carbon nanotubes in a mass ratio of 5:2:3 part, 10 parts of epoxy resin, 10 parts of curing agent methyltetrahydrophthalic anhydride, DMP-10 and DMP-30 form a curing accelerator in a mass ratio of 4:1, and the amount of curing accelerator is equal to the amount of curing agent. 1%, 4 parts of mixing aids composed of film-forming agent, defoamer and thixotropic agent according to the mass ratio of 3:1:0.5, and the rest are composed of ethyl acetate, propylene glycol n-propyl ether and DBE according to 3:1: A mixed solvent composed of a mass ratio of 1.

Embodiment 3

[0033] Ink 3: a carbon-based conductive ink, including the following components in parts by mass: a two-component conductive filler 25 composed of expanded graphite, conductive carbon black and carbon nanotubes in a mass ratio of 2:2:3 part, 5 parts of epoxy resin, 2 parts of curing agent 2-ethyl-4-methylimidazole, benzyldimethylamine and DMP-30 form a curing accelerator in a mass ratio of 1:1, and the amount of curing accelerator is 1% of the dosage of the agent, 2 parts of mixing aids composed of film-forming agent, defoamer and plasticizer in a mass ratio of 2:1:1, and the rest are composed of ethyl acetate and DBE in a mass ratio of 3:2 composed of mixed solvents.

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Abstract

The invention provides carbon series conductive ink, and relates to conductive ink. The carbon series conductive ink is prepared from the following ingredients in parts by mass: 5 to 40 parts of conductive filling materials, 2 to 20 parts of bonding agents, 0.1 to 8 parts of curing agents, 0.1 to 10 parts of auxiliary agents and 20 to 80 parts of solvents. The conductive filling materials comprise a first ingredient and a second ingredient; the first ingredient is expansion graphite; the second ingredient is at least one kind of materials from graphene, graphite, conductive carbon fiber, carbon nanometer tubes, conductive carbon black, acetylene black and the like; the mass ratio of the first ingredient to the second ingredient is (0.1 to 10):1. During the preparation, the solvents and the bonding agents are mixed until a transparent bonding agent mixed solution is obtained; after the ball milling of the expansion graphite, the conductive filling materials, the bonding agent mixed solution, the curing agents and the auxiliary agents are added; the ball milling is continuously performed to obtain slurry; after the slurry is filtered, the carbon series conductive ink is obtained.

Description

technical field [0001] The invention relates to conductive ink, in particular to a low-temperature curable, low-resistance carbon-based conductive ink and a preparation method thereof. Background technique [0002] Applying the traditional printing process to the manufacture of electronic products has expanded the new process technology of printed electronics, which has a tendency to develop toward flexibility, low cost, green environmental protection and high performance, and conductive ink is the key to printed electronic technology. At present, nano-metal conductive inks, especially silver conductive inks, are widely used in flexible electronics fields such as conductive electrodes, optoelectronic devices, radio frequency identification, and biosensors. Compared with nano-metal conductive inks, carbon-based conductive inks have outstanding cost advantages and are also compatible with inkjet printing methods. The printed ink film layer is not easy to oxidize, has stable pe...

Claims

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Application Information

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IPC IPC(8): C09D11/52
CPCC09D11/52
Inventor 郑南峰曹昉吴炳辉方晓亮张鑫
Owner XIAMEN UNIV