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Carbon fiber/gaseous carbon tube/carbon black compound conductive ink and preparation method thereof

A composite conductive and carbon fiber technology, applied in ink, household utensils, applications, etc., can solve the problems of increased cost, short service life, power attenuation, etc., and achieve the effect of uniform resistance, high conductivity, and good adhesion

Inactive Publication Date: 2019-05-31
HANGZHOU CHAOTAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, floor heating electric heating film prepared by printing is widely used in northern heating; the ink used in traditional floor heating film is ordinary carbon crystal electric heating ink, and carbon crystal floor heating on the market is a modified and purified carbon particle heating product. After the heat treatment, the ball milling treatment is carried out to make the microcrystalline particles, and then the far-infrared emitting agent is added, and the heating element is synthesized by a special process. Thermal energy is generated by the collision and friction between carbon molecules, and a large amount of infrared radiation is generated, and the conversion rate of electric energy and thermal energy is over 98%. However, the electrothermal film made of existing carbon crystal electrothermal ink has insufficient power attenuation Therefore, the service life of membrane products is short and the cost of later maintenance is increased.

Method used

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  • Carbon fiber/gaseous carbon tube/carbon black compound conductive ink and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 As shown, the preparation method of the carbon fiber / gas phase carbon tube / carbon black composite conductive ink (i.e. carbon fiber / gas phase carbon tube / carbon black composite conductive ink) of the present embodiment comprises the following steps:

[0033] 1. Preparation of pre-oxidized carbon fiber precursor powder

[0034] Put the pre-oxidized carbon fiber precursor (2kg) with a specification of 3K into a disc extrusion fiber cutting machine (3kW power), and cut the pre-oxidized carbon fiber precursor into 3mm long carbon fiber staple; then cut the carbon fiber short Transfer the fiber to a ball mill, add 50g of ferrocene, 8kg of organic solvent ethanol, and grind it with a zirconia ball with a diameter of 1mm for 0.5h, so that the ferrocene can be embedded in the surface of the carbon fiber precursor, providing a deposition point for the vapor-deposited carbon tube. Carbon tubes are deposited on the surface of micron-sized carbon fibers to provide ca...

Embodiment 2

[0040] The difference between this embodiment and the first embodiment lies in that the particle size of the carbon fiber precursor powder is different.

[0041] Specifically, the preparation method of the carbon fiber / gas phase carbon tube / carbon black composite conductive ink of this embodiment includes the following steps:

[0042] 1. Preparation of pre-oxidized carbon fiber precursor powder

[0043] Put the pre-oxidized carbon fiber precursor (2kg) with a specification of 3K into a disc extrusion fiber cutting machine (3kW power), and cut the pre-oxidized carbon fiber precursor into 3mm long carbon fiber staple; then cut the carbon fiber short Transfer the fibers to a ball mill, add 50g of ferrocene, 8kg of organic solvent ethanol, and grind with zirconia balls with a diameter of 1mm for 0.5h; wherein, the controlled temperature of the ball mill is 20-30°C, and carbon fibers with a particle size of 50μm are obtained after ball milling and drying Raw silk powder, that is, pr...

Embodiment 3

[0050] The difference between this embodiment and the first embodiment lies in that the mass ratio of ferrocene to carbon fiber precursor powder is different.

[0051] Specifically, the preparation method of the carbon fiber / gas phase carbon tube / carbon black composite conductive ink of this embodiment includes the following steps:

[0052] 1. Preparation of pre-oxidized carbon fiber precursor powder

[0053] Put the pre-oxidized carbon fiber precursor (2kg) with a specification of 3K into a disc extrusion fiber cutting machine (3kW power), and cut the pre-oxidized carbon fiber precursor into 3mm long carbon fiber staple; then cut the carbon fiber short Transfer the fibers to a ball mill, add 50g of ferrocene, 8kg of organic solvent ethanol, and grind with zirconia balls with a diameter of 1mm for 0.5h; among them, the controlled temperature of the ball mill is 20-30°C, and carbon fibers with a particle size of 20μm are obtained after ball milling and drying Raw silk powder, ...

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Abstract

The invention belongs to the technical field of conductive inks and particularly relates to a carbon fiber / gaseous carbon tube / carbon black compound conductive ink and a preparation method thereof. The carbon fiber / gaseous carbon tube / carbon black compound conductive ink is composed of, by weight part, 0.1-10 parts of carbon fiber / gaseous carbon tube compound powder, 0.1-20 parts of carbon black,0.1-70 parts of resin adhesives, 0.1-5 parts of dispersant, 0.1-5 parts of flatting agent, 0.1-5 parts of anti-settling agent and 0.1-5 parts of water-repellent agent. The carbon fiber / gaseous carbontube / carbon black compound conductive ink has the advantages of being high in adhesion force, electric conductivity, water resistance, alcohol resistance and the like and achieves uniform conductive uniformity and application attenuation resistance; meanwhile, the carbon fiber / gaseous carbon tube / carbon black compound conductive ink can be applied widely as heating carbon paste, conductive carbonpaste and electromagnetic shielding carbon paste to heating floors, PCB (printed circuit board) carbon oil, electromagnetic shielding coatings and the like.

Description

technical field [0001] The invention belongs to the technical field of conductive ink, and in particular relates to a carbon fiber / gas phase carbon tube / carbon black composite conductive ink and a preparation method thereof. Background technique [0002] Carbon-based materials have excellent electrical conductivity and heat transfer properties and are widely used in various fields, such as: lithium ion conductive paste, electronic products, heat dissipation products and electrothermal film products, etc. Nano-scale carbon materials can be divided into zero-dimensional, one-dimensional, and two-dimensional conductive carbon materials according to their morphology; among them, one-dimensional conductive carbon materials include: gas phase carbon fiber nanotubes, multi-walled carbon tubes, single-walled carbon tubes, and carbon nanorods. Conductive agents or conductive fillers prepared by compounding carbon materials with different morphologies have excellent conductivity and c...

Claims

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Application Information

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IPC IPC(8): C09D11/52C09D11/03C09D11/102
Inventor 汪训国刘中伟
Owner HANGZHOU CHAOTAN NEW MATERIAL TECH
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