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

Carbon conductive ink for capacitive tough screen as well as preparation method and application of carbon conductive ink

A technology of capacitive touch screen and conductive ink, which is applied in the direction of ink, application, household utensils, etc., can solve the problems of easy irreversible stacking and poor dispersion, and achieve the effect of improving conductivity, improving dispersion performance and reducing resistance

Inactive Publication Date: 2018-10-12
CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of graphene, such as easy irreversible stacking and poor dispersion during processing, limit the excellent performance of graphene in conductive pastes.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation of nitrogen-doped graphene

[0023] Weigh 10g of graphite and 5g of sodium nitrate in an ice bath and stir into 230mL of concentrated sulfuric acid, stir for 10min, then add 30g of potassium permanganate and stir for 2h, then place in a water bath at 35°C and stir for 3h, add deionized water, and heat up to Stir at 95°C for 1 hour, add 720 mL of deionized water and stir for 10 hours, add 80 mL of hydrogen peroxide, filter with suction, dissolve the filter cake in 1000 mL of 5mol / L hydrochloric acid, remove manganese ions by suction, wash with 1000 mL of L5 mol / L hydrochloric acid repeatedly for 3 times, and then Dissolve the filter cake in 2000mL deionized water, let it stand for 1 day, pour off the upper clear night, add deionized water, repeat the water change about 10 times until the pH value of the solution is greater than 4, sonicate for 10min, and centrifuge to obtain a graphene oxide dispersion . Dissolve melamine in ethanol and deionized ...

Embodiment 2

[0024] Embodiment two: the preparation one of carbon conductive ink

[0025] Preparation of carboxylated carbon nanotubes / nitrogen-doped graphene composite: Take carboxylated carbon nanotubes and add them to deionized water to stir and disperse to form a 3 mg / mL aqueous solution of carboxylated carbon nanotubes, take nitrogen-doped graphene and add them to Stir and disperse in deionized water to prepare a 12 mg / mL nitrogen-doped graphene aqueous solution, mix the carboxylated carbon nanotube aqueous solution and the nitrogen-doped graphene aqueous solution at a volume ratio of 4:1, stir for 3 hours to obtain a mixed solution, and freeze-dry 40h, obtain carboxylated carbon nanotube / nitrogen-doped graphene composite;

[0026] Preparation of composite filler: Mix acetonitrile and water at a volume ratio of 6:4, add cetyltrimethylammonium bromide and stir to make an acetonitrile solution, take 5g of carboxylated carbon nanotubes / nitrogen-doped graphite Add the alkene complex into...

Embodiment 3

[0028] Embodiment three: the preparation two of carbon conductive ink

[0029] Preparation of carboxylated carbon nanotubes / nitrogen-doped graphene composite: Take carboxylated carbon nanotubes and add them to deionized water to stir and disperse to form a 4 mg / mL aqueous solution of carboxylated carbon nanotubes, take nitrogen-doped graphene and add them to Stir and disperse in deionized water to prepare a 12 mg / mL nitrogen-doped graphene aqueous solution, mix the carboxylated carbon nanotube aqueous solution and nitrogen-doped graphene aqueous solution at a volume ratio of 4:1, stir for 5 hours to obtain a mixed solution, and freeze-dry 45h, obtain carboxylated carbon nanotube / nitrogen-doped graphene composite;

[0030] Preparation of composite filler: Mix acetonitrile and water at a volume ratio of 6:4, add cetyltrimethylammonium bromide and stir to make an acetonitrile solution, take 10g of carboxylated carbon nanotubes / nitrogen-doped graphite Add the alkene complex into ...

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

No PUM Login to View More

Abstract

The invention relates to the technical field of tough screens and in particular relates to a carbon conductive ink for a capacitive tough screen as well as a preparation method and application of thecarbon conductive ink. The carbon conductive ink comprises the following raw materials in parts by weight: 44-60 parts of composite filler, 8-15 parts of polymer resin, 2-5 parts of surfactant, 1-3 parts of dispersion stabilizer and 15-20 parts of solvent; the composite filler is prepared by polymerizing carboxylic carbon nanotubes, nitrogen-doped graphene and pyrrole; and the mass ratio of the carboxylic carbon nanotubes to nitrogen-doped graphene to pyrrole in raw materials for preparing the composite filler is 1:1:(0.1-0.2). According to the conductive ink prepared by using the preparationmethod, a conductive network which is uniform in dispersion and has a three-dimensional structure is formed by sufficiently utilizing the good conductivity of the carbon nanotubes and graphene.

Description

technical field [0001] The invention relates to the technical field of touch screens, in particular to a carbon conductive ink for a capacitive touch screen and a preparation method and application thereof. Background technique [0002] Touch screen, also known as "touch screen" or "touch panel", is an inductive liquid crystal display device that can receive input signals such as contacts. Drive various connecting devices according to pre-programmed programs, which can be used to replace mechanical button panels, and produce vivid audio-visual effects through liquid crystal display screens. As the latest computer input device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction. It endows multimedia with a new look and is a very attractive new multimedia interactive device. Mainly used in public information inquiry, leadership office, industrial control, military command, electronic games, ordering songs and dishes, mul...

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 Applications(China)
IPC IPC(8): C09D11/52C09D11/102C09D11/03G06F3/044
CPCC09D11/03C09D11/102C09D11/52G06F3/044G06F2203/04103
Inventor 李宪荣
Owner CHONGQING ZHONGGUANGDIAN DISPLAY TECH CO LTD