CN107093490A - A kind of capacitor conductive silver paste and preparation method thereof - Google Patents
A kind of capacitor conductive silver paste and preparation method thereof Download PDFInfo
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- CN107093490A CN107093490A CN201710181023.0A CN201710181023A CN107093490A CN 107093490 A CN107093490 A CN 107093490A CN 201710181023 A CN201710181023 A CN 201710181023A CN 107093490 A CN107093490 A CN 107093490A
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- parts
- silver paste
- conductive silver
- capacitor
- coupling agent
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/008—Selection of materials
- H01G4/0085—Fried electrodes
Abstract
The invention discloses a kind of capacitor conductive silver paste, it is characterised in that includes the raw material of following parts by weight：80 100 parts of silver powder, 20 30 parts of organic polymer soln, 13 parts of modified Nano carbon, 15 parts of nano zine oxide, 13 parts of thickener, 0.5 1 parts of defoamer, 13 parts of coupling agent, 0.5 1 parts of levelling agent.The capacitor of the present invention is with conductive silver paste viscosity coefficient is preferable, electric conductivity is preferable, stability is preferable, depth-width ratio is more excellent, the capacitor of the present invention is had a good application prospect with the preparation method of conductive silver paste its cost is relatively low, raw material is easy to get and preparation method is simple.
Description
Technical field
The present invention relates to conductive material technical field, and in particular to a kind of capacitor conductive silver paste and preparation method thereof.
Background technology
Foil mica capacity is the electricity done in dielectric print electrode on surface silver paste using mica sheet material as dielectric
After pole plate, pole plate and mica are overlapped in layer, then die casting is made in the epoxy in bakelite powder or sealing.Mica chip capacitor
The characteristics of device is that dielectric loss is small, and insulaion resistance is big, temperature coefficient is small, is suitable for high-frequency circuit.Mica condenser is used as base
Plinth component is widely used in radio messaging device, precision electronic device, modern communication instrument and meter and equipment, radio, work(
Put mechanical, electrical regarding machine etc..With the popularization of household electrical appliance in recent years, electronic product is to miniaturization, miniaturization, mica condenser
Demand increase year by year, also incrementally increase, increase year by year as the conductive silver paste demand of mica condenser electrode.
Conductive silver paste is mainly used in the directions such as thin film switch, flexible circuit, with China's silk-screen printing and flexible wires
The emergence of road board industry, the research and development of the electrocondution slurry of the soft circuit of film also increasingly attracts attention.Japan and
Western developed country has had compared with in-depth study to conductive silver paste over the last couple of decades, and has product with different commodity
Title is applied to actual, and in China, conductive silver paste has also stepped into the industrialization stage, and the substantial amounts of film of the Delta of the Pearl River
Manufacturer is switched, is exactly one of huge customers of conductive silver paste, at present, environmental protection is if the people of the world pays close attention to jointly
Topic, all trades and professions of every country also all increasingly attaching importance to environmental protection.Silver paste is uniformly adhered to dielectric by silk-screen printing
Surface, by drying, sintering etc. technique, excellent electrode layer is formed in dielectric surface.It is used as the conduction of electrode for capacitors
Silver paste demand is also incrementally increased, and market prospects are considerable.
Glass dust is widely used in silver paste as binding agent, by silver layer together with matrix mechanical adhesion.Glass dust is usual
Be made by the mixing of the raw materials such as bismuth oxide, boric acid, silica, high-temperature fusion, hardening, complex manufacturing, and with high temperature and
Noxious vapors endanger.In addition, being also impossible to be respectively formed well to infiltrate from different matrix materials with a glass dust to obtain stronger
Adhesive force.It is primarily present problems with：Silver content is high, sintering temperature is high, sintering range is narrow and silver layer is combined with mica sheet
Intensity is general, electric conductivity is poor.
The content of the invention
For the defect of prior art, it is an object of the invention to provide a kind of capacitor conductive silver paste, the capacitor is used
Conductive silver paste viscosity coefficient is preferable, electric conductivity is preferable, stability is preferable, depth-width ratio is more excellent, and capacitor of the invention is conductive
Its cost of the preparation method of silver paste is relatively low, raw material is easy to get and preparation method simple, has a good application prospect.
The present invention solves technical problem and adopted the following technical scheme that：
The invention provides a kind of capacitor conductive silver paste, include the raw material of following parts by weight：
80-100 parts of silver powder, 20-30 parts of organic polymer soln, 1-3 parts of modified Nano carbon, 1-5 parts of nano zine oxide, increasing
Thick dose 1-3 parts, 0.5-1 parts of defoamer, 1-3 parts of coupling agent, 0.5-1 parts of levelling agent.
Preferably, the capacitor includes the raw material of following parts by weight with conductive silver paste：
90 parts of silver powder, 25 parts of organic polymer soln, 2 parts of modified Nano carbon, 3 parts of nano zine oxide, 2 parts of thickener, disappear
0.8 part of infusion, 2 parts of coupling agent, 0.8 part of levelling agent.
Preferably, the solute of the organic polymer soln is one in ethyl cellulose, nitrocellulose, epoxy resin
Plant or several, the solvent of organic polymer soln is one kind in butyl carbitol, terpinol, octanol, butyl carbitol acetic acid
Or it is several, the ratio between solute, weight of solvent are 1:5.
Preferably, the modified Nano carbon is made as follows：
Nano-sized carbon is soaked in 15-20% acetum, ultrasonic disperse 50-60 minutes, then adds polyaniline and continue to divide
Dissipate 30-40 minutes, consumption is the 1.5-2% of nano-sized carbon, potassium peroxydisulfate is added afterwards, consumption is the 0.1-0.2% of nano-sized carbon, reaction
15-25 minutes, reaction was cleaned filtering with distilled water, dried after terminating, obtain modified Nano carbon.
Preferably, the thickener is one kind or several in lecithin, glycerine, rilanit special and aerosil
Kind；
One or more of the defoamer in ethanol, n-butanol and organosiloxane；
One or more of the coupling agent in silane coupling agent, titanate coupling agent and aluminate coupling agent, it is described
One or more of the levelling agent in tributyl phosphate, O-phthalic ester dibutyl ester and castor oil.
Present invention also offers a kind of preparation method of capacitor conductive silver paste, comprise the following steps：
Step one, silver powder, organic polymer soln, thickener, defoamer, coupling agent, levelling agent will be claimed to mix and adds height
In fast mixer, in the case where temperature is 90-110 DEG C, stirred 30-60 minutes with 400-500r/min rotating speed, obtain mixture slurry
A；
Step 2, above-mentioned mixture slurry A is ground on three-roll grinder, and silver paste fineness is controlled by the fine setting of roller
Below 5 μm, add nano zine oxide, modified Nano carbon, stirred in the case where temperature is 45-65 DEG C with 100-150r/min
100-120 minutes obtained capacitor conductive silver pastes.
Preferably, a kind of whipping temp of the step be 100 DEG C, speed of agitator be that 450r/min, mixing time are 45 points
Clock.
Preferably, in the step 2 whipping temp be 55 DEG C, speed of agitator be that 125r/min, mixing time are 110 points
Clock.
Compared with prior art, the present invention has following beneficial effect：
（1）The capacitor of the present invention with the addition of organic polymer soln with conductive silver paste, and the organic polymer soln can be improved
The adhesive force and peel strength of conductive silver paste material so that the soldering of silver paste is functional.
（2）The capacitor of the present invention with the addition of modified Nano carbon with conductive silver paste, add the electric conductivity of slurry of the present invention
Energy, resistance value diminish.
（3）The capacitor of the present invention with the addition of nano zine oxide with conductive silver paste, can lift the selectivity to carrier
Collection rate, reduces complex centre and is formed；Effectively reduction sheet resistance, changes the change of conductive silver paste viscosity.
（4）The capacitor conductive silver paste of the present invention is by reasonable employment additive, and each component, which acts synergistically, causes this hair
Bright capacitor is with conductive silver paste viscosity of material coefficient is preferable, electric conductivity is preferable, stability is preferable, depth-width ratio is more excellent.
(5) capacitor of the invention is with the preparation method cost of conductive silver paste is relatively low, raw material is easy to get and preparation method is simple
It is single, have a good application prospect.
Embodiment
With reference to specific embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, shown
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of protection of the invention.
Embodiment 1.
The capacitor conductive silver paste of the present embodiment, includes the raw material of following parts by weight：
80 parts of silver powder, 20 parts of organic polymer soln, 1 part of modified Nano carbon, 1 part of nano zine oxide, 1 part of thickener, disappear
0.5 part of infusion, 1 part of coupling agent, 0.5 part of levelling agent.
The solute of organic polymer soln is ethyl cellulose in the present embodiment, and the solvent of organic polymer soln is butyl
Carbitol, the ratio between solute, weight of solvent are 1:5.
Modified Nano carbon is made as follows in the present embodiment：
Nano-sized carbon is soaked in 15 acetum, ultrasonic disperse 50 minutes, then adds polyaniline and continue scattered 30 minutes,
Consumption is the 1.5% of nano-sized carbon, and potassium peroxydisulfate is added afterwards, and consumption is the 0.1% of nano-sized carbon, is reacted 15 minutes, reaction is used after terminating
Distilled water cleaning is filtered, dried, and obtains modified Nano carbon.
Thickener is lecithin in the present embodiment；Defoamer is ethanol；Coupling agent is silane coupling agent, and levelling agent is phosphorus
Sour tributyl.
The preparation method of the capacitor conductive silver paste of the present embodiment, comprises the following steps：
Step one, silver powder, organic polymer soln, thickener, defoamer, coupling agent, levelling agent will be claimed to mix and adds height
In fast mixer, in the case where temperature is 90 DEG C, stirred 30 minutes with 400r/min rotating speed, obtain mixture slurry A；
Step 2, above-mentioned mixture slurry A is ground on three-roll grinder, and silver paste fineness is controlled by the fine setting of roller
Below 5 μm, nano zine oxide, modified Nano carbon are added, is stirred 100 minutes and made with 100r/min in the case where temperature is 45 DEG C
Obtain capacitor conductive silver paste.
Embodiment 2.
The capacitor conductive silver paste of the present embodiment, includes the raw material of following parts by weight：
100 parts of silver powder, 30 parts of organic polymer soln, 3 parts of modified Nano carbon, 5 parts of nano zine oxide, 3 parts of thickener, disappear
1 part of infusion, 3 parts of coupling agent, 1 part of levelling agent.
The solute of organic polymer soln is epoxy resin in the present embodiment, and the solvent of organic polymer soln is pine tar
Alcohol, the ratio between solute, weight of solvent are 1:5.
Modified Nano carbon is made as follows in the present embodiment：
Nano-sized carbon is soaked in 20% acetum, ultrasonic disperse 60 minutes, then adds polyaniline and continue scattered 40 points
Clock, consumption is the 2% of nano-sized carbon, and potassium peroxydisulfate is added afterwards, and consumption is the 0.2% of nano-sized carbon, is reacted 25 minutes, reaction is used after terminating
Distilled water cleaning is filtered, dried, and obtains modified Nano carbon.
Thickener is glycerine in the present embodiment；Defoamer is n-butanol；Coupling agent is titanate coupling agent；Levelling agent is neighbour
Benzene dimethyl ester dibutyl ester.
The preparation method of the capacitor conductive silver paste of the present embodiment, comprises the following steps：
Step one, silver powder, organic polymer soln, thickener, defoamer, coupling agent, levelling agent will be claimed to mix and adds height
In fast mixer, in the case where temperature is 110 DEG C, stirred 60 minutes with 500r/min rotating speed, obtain mixture slurry A；
Step 2, above-mentioned mixture slurry A is ground on three-roll grinder, and silver paste fineness is controlled by the fine setting of roller
Below 5 μm, nano zine oxide, modified Nano carbon are added, is stirred 120 minutes and made with 150r/min in the case where temperature is 65 DEG C
Obtain capacitor conductive silver paste.
Embodiment 3.
The capacitor conductive silver paste of the present embodiment, includes the raw material of following parts by weight：
90 parts of silver powder, 25 parts of organic polymer soln, 2 parts of modified Nano carbon, 3 parts of nano zine oxide, 2 parts of thickener, disappear
0.8 part of infusion, 2 parts of coupling agent, 0.5-1 parts of levelling agent.
The solute of organic polymer soln is nitrocellulose in the present embodiment, and the solvent of organic polymer soln is butyl
Carbitol acetic acid, the ratio between solute, weight of solvent are 1:5.
Modified Nano carbon is made as follows in the present embodiment：
Nano-sized carbon is soaked in 17% acetum, ultrasonic disperse 55 minutes, then adds polyaniline and continue scattered 35 points
Clock, consumption is the 1.8% of nano-sized carbon, and potassium peroxydisulfate is added afterwards, and consumption is the 0.2% of nano-sized carbon, is reacted 20 minutes, after reaction terminates
Filtering is cleaned with distilled water, is dried, modified Nano carbon is obtained.
Thickener is lecithin in the present embodiment；Defoamer is organosiloxane；Coupling agent is aluminate coupling agent；Levelling
Agent is castor oil.
The preparation method of the capacitor conductive silver paste of the present embodiment, comprises the following steps：
Step one, silver powder, organic polymer soln, thickener, defoamer, coupling agent, levelling agent will be claimed to mix and adds height
In fast mixer, in the case where temperature is 100 DEG C, stirred 45 minutes with 450r/min rotating speed, obtain mixture slurry A；
Step 2, above-mentioned mixture slurry A is ground on three-roll grinder, and silver paste fineness is controlled by the fine setting of roller
Below 5 μm, nano zine oxide, modified Nano carbon are added, is stirred 110 minutes and made with 125r/min in the case where temperature is 55 DEG C
Obtain capacitor conductive silver paste.
The performance test results for the conductive silver paste that various embodiments above is obtained are as follows：
| Viscosity coefficient（S.T.I） | Grid line depth-width ratio | Cell series resistance（mΩ） | |
| Embodiment 1 | 5.1 | ＞ 0.35 | 1.5-1.8 |
| Embodiment 2 | 5.3 | ＞ 0.35 | 1.5-1.8 |
| Embodiment 3 | 5.5 | ＞ 0.35 | 1.5-1.8 |
| Comparative example | 4.9 | ＜ 0.3 | ＞ 2 |
The capacitor of the present invention with the addition of organic polymer soln with conductive silver paste, and the organic polymer soln can improve conduction
The adhesive force and peel strength of silver paste material so that the soldering of silver paste is functional；Modified Nano carbon is with the addition of, this hair is added
The electric conductivity of bright slurry, resistance value diminish；Nano zine oxide is with the addition of, the selective collection rate to carrier can be lifted,
Complex centre is reduced to be formed；Effectively reduction sheet resistance, changes the change of conductive silver paste viscosity；By reasonable employment additive, respectively
Component, which acts synergistically, causes capacitor of the invention with conductive silver paste viscosity of material coefficient is preferable, electric conductivity is preferable, stability
Preferably, depth-width ratio is more excellent.The capacitor of the present invention is with the preparation method cost of conductive silver paste is relatively low, raw material is easy to get and preparation side
Method is simple, has a good application prospect.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (8)
1. a kind of capacitor conductive silver paste material, it is characterised in that include the raw material of following parts by weight：
80-100 parts of silver powder, 20-30 parts of organic polymer soln, 1-3 parts of modified Nano carbon, 1-5 parts of nano zine oxide, increasing
Thick dose 1-3 parts, 0.5-1 parts of defoamer, 1-3 parts of coupling agent, 0.5-1 parts of levelling agent.
2. capacitor conductive silver paste according to claim 1, it is characterised in that the capacitor is included with conductive silver paste
The raw material of following parts by weight：
90 parts of silver powder, 25 parts of organic polymer soln, 2 parts of modified Nano carbon, 3 parts of nano zine oxide, 2 parts of thickener, disappear
0.8 part of infusion, 2 parts of coupling agent, 0.8 part of levelling agent.
3. capacitor conductive silver paste according to claim 1 or 2, it is characterised in that the organic polymer soln
Solute is the one or more in ethyl cellulose, nitrocellulose, epoxy resin, and the solvent of organic polymer soln is butyl
One or more in carbitol, terpinol, octanol, butyl carbitol acetic acid, the ratio between solute, weight of solvent are 1:5.
4. capacitor conductive silver paste according to claim 1 or 2, it is characterised in that the modified Nano carbon passes through such as
Lower step is made：
Nano-sized carbon is soaked in 15-20% acetum, ultrasonic disperse 50-60 minutes, then adds polyaniline and continue to divide
Dissipate 30-40 minutes, consumption is the 1.5-2% of nano-sized carbon, potassium peroxydisulfate is added afterwards, consumption is the 0.1-0.2% of nano-sized carbon, reaction
15-25 minutes, reaction was cleaned filtering with distilled water, dried after terminating, obtain modified Nano carbon.
5. capacitor conductive silver paste according to claim 1 or 2, it is characterised in that the thickener is lecithin, sweet
One or more in oil, rilanit special and aerosil；
One or more of the defoamer in ethanol, n-butanol and organosiloxane；
One or more of the coupling agent in silane coupling agent, titanate coupling agent and aluminate coupling agent, it is described
One or more of the levelling agent in tributyl phosphate, O-phthalic ester dibutyl ester and castor oil.
6. the preparation method of capacitor conductive silver paste according to claim 1 or 2, it is characterised in that including following step
Suddenly：
Step one, silver powder, organic polymer soln, thickener, defoamer, coupling agent, levelling agent will be claimed to mix and adds height
In fast mixer, in the case where temperature is 90-110 DEG C, stirred 30-60 minutes with 400-500r/min rotating speed, obtain mixture slurry
A；
Step 2, above-mentioned mixture slurry A is ground on three-roll grinder, and silver paste fineness is controlled by the fine setting of roller
Below 5 μm, add nano zine oxide, modified Nano carbon, stirred in the case where temperature is 45-65 DEG C with 100-150r/min
100-120 minutes obtained capacitor conductive silver pastes.
7. the preparation method of capacitor conductive silver paste according to claim 6, it is characterised in that described step one kind is stirred
Mix temperature be 100 DEG C, speed of agitator be that 450r/min, mixing time are 45 minutes.
8. the preparation method of capacitor conductive silver paste according to claim 6, it is characterised in that stirred in the step 2
Mix temperature be 55 DEG C, speed of agitator be that 125r/min, mixing time are 110 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181023.0A CN107093490A (en) | 2017-03-24 | 2017-03-24 | A kind of capacitor conductive silver paste and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181023.0A CN107093490A (en) | 2017-03-24 | 2017-03-24 | A kind of capacitor conductive silver paste and preparation method thereof |
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| CN107093490A true CN107093490A (en) | 2017-08-25 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334222A (en) * | 2022-01-13 | 2022-04-12 | 深圳市普瑞威科技有限公司 | Conductive silver paste for relay contact and preparation method thereof |
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| CN101620893A (en) * | 2009-05-22 | 2010-01-06 | 广东风华高新科技股份有限公司 | All-silver electronic paste and preparation method thereof |
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| CN104867533A (en) * | 2014-02-24 | 2015-08-26 | 南昌欧菲光学技术有限公司 | Photosensitive conductive silver slurry and preparation method thereof |
| CN105895192A (en) * | 2016-06-24 | 2016-08-24 | 四川艾尔法泰克科技有限公司 | Low-temperature conductive silver slurry and preparation method thereof |
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2017
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|---|---|---|---|---|
| JP2001326136A (en) * | 2000-05-16 | 2001-11-22 | Murata Mfg Co Ltd | Conductive paste and nonlinear capacitor using the same |
| US20040213901A1 (en) * | 2001-09-20 | 2004-10-28 | Murata Manufacturing Co., Ltd. | Conductive paste, method for manufacturing laminated ceramic electronic component, and laminated ceramic electronic component |
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| CN103236286A (en) * | 2013-04-01 | 2013-08-07 | 安徽拓普森电池有限责任公司 | Conductive sliver paste and preparation method thereof |
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| CN114334222A (en) * | 2022-01-13 | 2022-04-12 | 深圳市普瑞威科技有限公司 | Conductive silver paste for relay contact and preparation method thereof |
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Application publication date: 20170825 |