CN111154339A - Carbon-based conductive ink filler and preparation method thereof - Google Patents
Carbon-based conductive ink filler and preparation method thereof Download PDFInfo
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- CN111154339A CN111154339A CN202010147472.5A CN202010147472A CN111154339A CN 111154339 A CN111154339 A CN 111154339A CN 202010147472 A CN202010147472 A CN 202010147472A CN 111154339 A CN111154339 A CN 111154339A
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- carbon
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- conductive ink
- graphene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a carbon-based conductive ink filler and a preparation method thereof, wherein the carbon-based conductive ink filler comprises the following components in percentage by mass: 40-50% of epoxy resin, 20-30% of graphene, 10-20% of conductive carbon black, 2-5% of hyperdispersant and 8-15% of mixed solvent, wherein the total amount is 100%. According to the invention, graphene and conductive carbon black are used as conductive additives, and under the action of the hyperdispersant and the composite solvent, the graphene, the conductive carbon black and the epoxy resin are compounded, so that the prepared carbon conductive ink filler has better conductivity of the ink by the graphene, and the complementary conductivity is realized by compounding the conductive carbon black and the graphene, thereby achieving the optimal conductive effect; and can be better dispersed in the connecting resin, thereby being beneficial to improving the conductive uniformity of the conductive ink.
Description
Technical Field
The invention relates to the field of conductive fillers, in particular to a carbon conductive ink filler and a preparation method thereof.
Background
With the continuous development of science and technology, people have more and more requirements on electronic products, flexible circuit boards are used in the electronic products, and conductive ink needs to be printed on the circuit boards to realize conductive performance. The filler in the conductive ink plays a key role in the conductivity of the ink, and the selection of the conductive filler influences the conductivity of the conductive ink.
At present, metal and polymer conductive filler are mainly used, wherein the price of the metal is too high, and the conductive performance of the polymer conductive filler can not meet the use requirement more and more. And the existing conductive filler is directly added into the connecting resin in a large amount, so that the dispersibility is poor, and the conductive uniformity of the conductive ink is influenced.
Disclosure of Invention
The invention mainly solves the technical problem of providing a carbon-based conductive ink filler and a preparation method thereof, and can effectively solve the problems of the existing metal and polymer conductive fillers.
In order to solve the technical problems, the invention adopts a technical scheme that: the carbon-based conductive ink filler comprises the following components in percentage by mass: 40-50% of epoxy resin, 20-30% of graphene, 10-20% of conductive carbon black, 2-5% of hyperdispersant and 8-15% of mixed solvent, wherein the total amount is 100%.
In a preferred embodiment of the present invention, the mixed solvent is a mixture of n-propyl acetate and ethylene glycol monoethyl ether acetate.
In a preferred embodiment of the invention, the mixing mass ratio of the n-propyl acetate and the ethylene glycol monoethyl ether acetate is 6: 4-7: 3.
In a preferred embodiment of the invention, the hyperdispersant is a polyester type hyperdispersant.
In a preferred embodiment of the present invention, the epoxy resin is an aliphatic epoxy resin.
In order to solve the technical problem, the invention adopts another technical scheme that: the preparation method of the carbon-based conductive ink filler comprises the following steps:
(1) mixing materials: firstly, uniformly stirring and mixing the graphene with the formula amount and the epoxy resin with the formula amount, and then adding the conductive carbon black with the formula amount, uniformly stirring and mixing to obtain a mixed material;
(2) dispersing and mixing: adding the hyperdispersant and the mixed solvent into the mixed material according to the formula ratio, and stirring and mixing uniformly;
(3) grinding: and (4) putting the dispersed and mixed material obtained in the step (3) into a grinding machine to be ground to the required particle size, so as to obtain the carbon-series conductive composite filler.
In a preferred embodiment of the present invention, the process conditions of the two times of stirring and mixing are as follows: the stirring speed is 300-600 r/min, and the stirring time is 30-60 min.
In a preferred embodiment of the present invention, the particle size is 10 μm or less.
The invention has the beneficial effects that: according to the preparation method of the carbon-based conductive ink filler, graphene and conductive carbon black are used as conductive additives, and the graphene, the conductive carbon black and epoxy resin are compounded under the action of the hyperdispersant and the composite solvent, so that the prepared carbon-based conductive ink filler has better conductivity of the ink on one hand, and is complementary to the conductivity of the ink on the other hand, so that the optimal conductive effect is achieved; and can be better dispersed in the connecting resin, thereby being beneficial to improving the conductive uniformity of the conductive ink.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
The embodiment of the invention comprises the following steps:
example 1
The invention discloses a carbon-based conductive ink filler, which is prepared by the following steps:
weighing 50kg of epoxidized polybutadiene resin according to 100kg, putting into a dispersion kettle, weighing 20kg of graphene, adding into the dispersion kettle, and stirring at a stirring speed of 600r/min for 30min to uniformly mix; then weighing 20kg of conductive carbon black, adding the conductive carbon black into the mixture of the epoxidized polybutadiene resin and the graphene, and stirring at the stirring speed of 600r/min for 30min to uniformly mix the conductive carbon black and the graphene;
then weighing 2kg of diethylethanolamine; weighing 8kg of mixed solvent which is n-propyl acetate and glycol ethyl ether acetate mixed according to the mass ratio of 6: 4; then adding the weighed diethylethanolamine, n-propyl acetate and ethylene glycol monoethyl ether acetate into the mixture of the epoxidized polybutadiene resin, the graphene and the conductive carbon black, and stirring and mixing at the speed of 500r/min for 20min to ensure that the mixture is stirred and mixed uniformly;
the mixture obtained by mixing is put into a grinding machine to be ground for more than 3 times to ensure that the particle size is less than 10 mu m, and the carbon-based conductive ink filler for the conductive ink is obtained.
The resistivity of the carbon-based conductive ink filler prepared by adopting a conductivity test operation standard TS-QW-007 test is 7.0 omega m.
Example 2
The invention discloses a carbon-based conductive ink filler, which is prepared by the following steps:
weighing 40kg of epoxidized polybutadiene resin according to 100kg, putting the epoxidized polybutadiene resin into a dispersion kettle, weighing 30kg of graphene, adding the graphene into the dispersion kettle, and stirring at a stirring speed of 300r/min for 60min to uniformly mix the graphene and the graphene; then weighing 10kg of conductive carbon black, adding the conductive carbon black into the mixture of the epoxidized polybutadiene resin and the graphene, and stirring at the stirring speed of 600r/min for 30min to uniformly mix;
then weighing 5kg of diethylethanolamine; weighing 15kg of mixed solvent which is n-propyl acetate and glycol ethyl ether acetate mixed according to the mass ratio of 7: 3; then adding the weighed diethylethanolamine, n-propyl acetate and ethylene glycol monoethyl ether acetate into the mixture of the epoxidized polybutadiene resin, the graphene and the conductive carbon black, and stirring and mixing at the speed of 500r/min for 30min to ensure that the mixture is stirred and mixed uniformly;
the mixture obtained by mixing is put into a grinding machine to be ground for more than 3 times to ensure that the particle size is less than 10 mu m, and the carbon-based conductive ink filler for the conductive ink is obtained.
The resistivity of the carbon-based conductive ink filler prepared by adopting a conductivity test operation standard TS-QW-007 test is 7.5 omega m.
The invention relates to a preparation method of a carbon-series conductive ink filler, which has the following advantages that:
1. graphene and conductive carbon black are used as conductive additives, on one hand, the graphene can enable the conductivity of the ink to be better, and on the other hand, the conductive carbon black and the graphene are compounded to realize the complementary conductivity, so that the optimal conductive effect is achieved;
2. under the action of the hyper-dispersant and the composite solvent, the graphene, the conductive carbon black and the epoxy resin are compounded, so that the obtained filler has excellent dispersing performance and can be better dispersed in the connecting resin, and the improvement of the conductive uniformity of the conductive ink is facilitated.
3. The aliphatic epoxy resin is selected as an auxiliary material of the conductive filler, and the cured conductive filler has good strength, toughness, adhesion and positive and negative temperature resistance.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The carbon-based conductive ink filler is characterized by comprising the following components in percentage by mass: 40-50% of epoxy resin, 20-30% of graphene, 10-20% of conductive carbon black, 2-5% of hyperdispersant and 8-15% of mixed solvent, wherein the total amount is 100%.
2. The carbon-based conductive ink filler according to claim 1, wherein the mixed solvent is a mixture of n-propyl acetate and ethylene glycol monoethyl ether acetate.
3. The carbon-based conductive ink filler according to claim 2, wherein the mixing mass ratio of n-propyl acetate and glycol ethyl ether acetate is 6:4 to 7: 3.
4. The carbon-based conductive ink filler according to claim 1, wherein the hyperdispersant is a polyester type hyperdispersant.
5. The carbon-based conductive ink filler according to claim 1, wherein the epoxy resin is an aliphatic epoxy resin.
6. A preparation method of a carbon-based conductive ink filler is characterized by comprising the following steps:
(1) mixing materials: firstly, uniformly stirring and mixing the graphene with the formula amount and the epoxy resin with the formula amount, and then adding the conductive carbon black with the formula amount, uniformly stirring and mixing to obtain a mixed material;
(2) dispersing and mixing: adding the hyperdispersant and the mixed solvent into the mixed material according to the formula ratio, and stirring and mixing uniformly;
(3) grinding: and (4) putting the dispersed and mixed material obtained in the step (3) into a grinding machine to be ground to the required particle size, so as to obtain the carbon-series conductive composite filler.
7. The method for preparing the carbon-based conductive ink filler according to claim 6, wherein the process conditions of the two times of stirring and mixing are as follows: the stirring speed is 300-600 r/min, and the stirring time is 30-60 min.
8. The method of claim 6, wherein the particle size is 10 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010147472.5A CN111154339A (en) | 2020-03-05 | 2020-03-05 | Carbon-based conductive ink filler and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010147472.5A CN111154339A (en) | 2020-03-05 | 2020-03-05 | Carbon-based conductive ink filler and preparation method thereof |
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| CN111154339A true CN111154339A (en) | 2020-05-15 |
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| CN202010147472.5A Withdrawn CN111154339A (en) | 2020-03-05 | 2020-03-05 | Carbon-based conductive ink filler and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022061997A1 (en) * | 2020-09-25 | 2022-03-31 | 欧菲光集团股份有限公司 | Conductive ink, ultrasonic fingerprint module, and electronic device |
-
2020
- 2020-03-05 CN CN202010147472.5A patent/CN111154339A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022061997A1 (en) * | 2020-09-25 | 2022-03-31 | 欧菲光集团股份有限公司 | Conductive ink, ultrasonic fingerprint module, and electronic device |
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Application publication date: 20200515 |