CN108597676B - A kind of preparation method and application containing organobentonite low-temperature solidified silver paste - Google Patents
A kind of preparation method and application containing organobentonite low-temperature solidified silver paste Download PDFInfo
- Publication number
- CN108597676B CN108597676B CN201711202232.5A CN201711202232A CN108597676B CN 108597676 B CN108597676 B CN 108597676B CN 201711202232 A CN201711202232 A CN 201711202232A CN 108597676 B CN108597676 B CN 108597676B
- Authority
- CN
- China
- Prior art keywords
- organobentonite
- low
- preparation
- silver paste
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Conductive Materials (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a kind of preparation method and applications containing organobentonite low-temperature solidified silver paste.The preparation for serving high-performance low-temperature solidified electric slurry uses.The slurry is made of the following each raw material of mass percentage: 1~5wt%'s utilizes surfactant-modified obtained organobentonite, the silver powder of 35~65wt% and the organic carrier of 34~60wt%.The surfactant-modified obtained organobentonite is suitable for low-temperature setting electric slurry formula, including organic carrier systems such as epoxy, chlorine vinegar, polyester, polyurethane, acrylic acid, while being suitable for piece powder, ball powder and its silver powder system.The Effective Regulation for not only realizing slurry viscosity is added in bentonite in the present invention, obtain good rheological behavior, meet high-resolution silk-screen printing requirement, effectively solve the decentralized stable problem of low viscosity resin carrier and silver powder particles, realize that efficient conductive path, conductive film layer have good electric property.
Description
Technical field
The invention belongs to photoelectricity information material preparation technical fields, contain modified organic swelling more particularly, to one kind
The preparation method and application of native low-temperature solidified silver paste.
Background technique
When the viscosity of electric slurry reduces, series of malpractice is often generated, low viscosity system first is not easy to store,
During storage, sedimentation, layering easily occurs.In printing, poor rheological property, extremely low thixotropy, so that after printing
Flared end occurs for film layer, influences the electric property of film layer.However be the good electric conductivity of acquisition, the addition of auxiliary agent should be avoided, this
Auxiliary agent added by requiring influences the electrical property of silver paste as small as possible.
For slurry system, it is hydrophilic without oleophylic that organobentonite prepared by the present invention overcomes traditional Na base bentonite
Property defect, it can be dispersed in organic phase, in the case where unused organic functions auxiliary agent, realize to superfines
Dispersion and architecture stabilization, bentonite addition enhance system powder inside electrical charges between particles repulsion and sky
Between steric stabilization so that slurry has good stably dispersing performance precipitating, layering are not susceptible in storing process；It starches simultaneously
Material obtains good rheology printing characteristic, and it is full that printing prepares pattern densification, bubble-free, stomata.Modification produced by the present invention has
Machine bentonite is suitable for most low-temperature setting slurry system, in terms of the electric property on, the advantages of compared to other thickening aids,
It does not influence the electric conductivity of slurry, while promoting effective overlap joint between powder granule, obtains after slurry low-temperature setting good
Electric conductivity.Formula system has the advantages that low silver content is low-resistance, significantly reduces the production cost of slurry.
Summary of the invention
The present invention using it is a kind of by surfactant-modified obtained organobentonite as the thickening aids of low viscous silver paste,
While improving dispersion, the rheology printing performance of slurry, good electric property can also be obtained.After solidification drying, Ke Yishi
Existing conductive film layer current-carrying capability is strong, the strong attachment to material substrate, and the product yield prepared is high.
To achieve the goals above, according to one aspect of the present invention, a kind of preparation side of organic modified bentonite is provided
Method, it is preferred that such surfactant-modified obtained organobentonite is made as follows:
(1) reaction flask is taken, 8~10 parts of two or more surfactants are added to 10~15 times of deionized waters
In, mixed surfactants solutions are made.Take another reaction flask, by 5~8 parts of Na base bentonites be added to 10~15 times go from
In sub- water, bentonite suspension is made in 50~60 DEG C of high speed dispersions of constant temperature.Be warming up to 60~70 DEG C under stirring conditions slowly
Prepared surfactant solution is added, 2~3h of high speed dispersion, reacts it sufficiently under high speed disperser, reuses super
Sound wave disperses 3~6h, is put into centrifugation in centrifuge.
(2) it with deionized water by organobentonite ultrasonic washing 4~5 times of synthesis, finally filters separation and is dried at 70 DEG C
Decompression drying in case ground 100 mesh ultrasound filtrations sieve, the organobentonite containing surfactant is made.
Preferably, the surfactant is quaternary cationics, main carbochain C atom number 10~
In 20 ranges, molecular characterization is [(CH3)3NR]+X-Or [(CH3)2NR2]+X-Or SiX3R, wherein R represents alkyl, and X is represented
Halogens.Such as tetradecyl trimethyl ammonium chloride, tetradecyltrimethylammonium bromide, cetyl trimethylammonium bromide,
Octadecyltrimethylammonium chloride, octadecyl trichlorosilane alkane etc..
Preferably, 2.4~4.0g/cm of range tap density of the flake silver powder3, 4.5~6.7um of average grain diameter, burning
Damage < 1%, 1.5~2.5m of specific surface area2/g.4.1~5.0g/cm of range tap density of spherical silver powder3, average grain diameter 0.5~
1.4um, scaling loss < 0.5%, 0.8~1.0m of specific surface area2/g。
It is another aspect of this invention to provide that a kind of preparation method containing organobentonite low-temperature solidified silver paste, feature
It is, the preparation of organic carrier includes the following steps:
Resin is dissolved in solvent, 70 DEG C of stirring in water bath of constant temperature, it is to be dissolved completely after be down to room temperature, add curing agent, it is high
Disperse 40min under revolving speed and organic carrier is made.
Preferably, the resin include epoxy resin, vinyl chloride-vinyl acetate resin, polyester resin, polyurethane, in acrylic resin
One or more composition.
Preferably, the organic solvent is isophorone, DBE, dimethylformamide, butyl acetate, penta
Acid dimethyl, hexanedioic acid dimethyl ester, t-butyl methyl ether one or more kinds of mixed solvents.
Preferably, the curing agent is blocked isocyanate or dicyandiamide or imidazoles, wherein enclosed type isocyanide
It is 110~135 DEG C that acid esters, which unseals temperature,.
It is another aspect of this invention to provide that a kind of preparation method containing organobentonite low-temperature solidified silver paste, feature
It is, silver paste preparation includes the following steps:
Organic carrier and organic modified bentonite are slurried using double planetary mixer premixing, leaching is stirred in dispersion machine
Moisten 2~5h, then silver powder and premix centrotheca are dispersed using three-roll grinder, until slurry fineness is less than 6 μm, finally depressurizes
Deaeration obtains high-performance low-temperature solidified silver paste made from a kind of organic modified bentonite.
Through the invention it is contemplated above technical scheme is compared with the prior art, have the advantages that
1. realize slurry viscosity Effective Regulation, obtain good rheological behavior, meet height put into several classes rate silk-screen printing use
It is required that.
2. the decentralized stable problem of low viscosity resin carrier and silver powder particles is effectively solved, with traditional printing electric slurry phase
Than organobentonite enhances system powder inside electrical charges between particles repulsion and space stability ultimate load, so that superfine powder somaplasm
Material has good stably dispersing performance, and agglomeration, precipitating and layering are not susceptible in storing process.
3. printing process pattern densification is full, bubble-free, stomata.After electric slurry solidification, organobentonite helps to lead
Electric powder interface overlap joint realizes that efficient conductive path, conductive film layer have good electric property.
4. this silver paste effectively promotes the stability of slurry, film-forming silk-screen line width is stable, resistivity is low, yields
Height significantly reduces the production cost of slurry.
Detailed description of the invention:
Fig. 1 is the SEM figure of organic modified bentonite made from the embodiment of the present invention 1；Mag20000×
Fig. 2 is silver paste line width pattern made from the embodiment of the present invention 1；
Fig. 3 is the SEM figure of organic modified bentonite made from the embodiment of the present invention 2；Mag20000×
Fig. 4 is silver paste line width pattern made from the embodiment of the present invention 2；
Fig. 5 is the SEM figure of organic modified bentonite made from the embodiment of the present invention 3；Mag20000×
Fig. 6 is silver paste line width pattern made from the embodiment of the present invention 3.
Specific embodiment
The electrocondution slurry of the embodiment of the present invention is made of the following each raw material of mass percentage: 1~5wt%'s utilizes table
The modified obtained organobentonite of face activating agent, the silver powder of 35~65wt% and the organic carrier of 34~60wt%.
Wherein, modified alta-mud is made by surfactant-modified, and wherein surfactant is existed by main carbochain C atom number
In 10~20 ranges, molecular characterization is [(CH3)3NR]+X-、[(CH3)2NR2]+X-Or SiX3R, wherein R represents alkyl, X generation
Table halogens, mixing composition.Such as tetradecyl trimethyl ammonium chloride, tetradecyltrimethylammonium bromide, cetyl three
The mixed system of the compositions such as methyl bromide ammonium, octadecyltrimethylammonium chloride, octadecyl trichlorosilane alkane.It is thus obtained to have
The bentonitic colloidity of machine is 7.8~9.7%, 12.1~18.2m of specific surface area2/ g, 65~75ml/100g of oil factor-1, whiteness
76.61~78.63%.2.4~4.0g/cm of range tap density of flake silver powder3, 4.5~6.7um of average grain diameter, scaling loss <
1%, 1.5~2.5m of specific surface area2/g.4.1~5.0g/cm of range tap density of spherical silver powder3, average grain diameter 0.5~
1.4um, scaling loss < 0.5%, 0.8~1.0m of specific surface area2/g.The type of resin includes epoxy resin, vinyl chloride-vinyl acetate resin, polyester tree
One or more of rouge, polyurethane, acrylic resin composition.Organic solvent is isophorone, DBE, dimethylformamide, two
2-Butoxyethyl acetate, dimethyl glutarate, hexanedioic acid dimethyl ester, the one or more mixing of t-butyl methyl ether are molten
Agent.Curing agent is blocked isocyanate or dicyandiamide or imidazoles, wherein blocked isocyanate deblocking temperature be 110~
135℃。
One kind of preparation of the embodiment of the present invention contains organobentonite low-temperature solidified silver paste-making method, includes the following steps:
(1) preparation of organic modified bentonite.Specifically, reaction flask is taken, by 8~10 parts of two or more surfaces
Activating agent is added in 10~15 times of deionized waters, and mixed surfactants solutions are made.Another reaction flask is taken, by 5~8 parts of Na
Base bentonite is added in 10~15 times of deionized water, 50~60 DEG C of high speed dispersions of constant temperature, and bentonite suspension is made.Heating
It is slowly added to prepared surfactant solution under stirring conditions to 60~70 DEG C, the high speed dispersion under high speed disperser
2~3h reacts it sufficiently, reuses ultrasonic wave and disperses 3~6h, is put into centrifugation in centrifuge.With deionized water by synthesis
Organobentonite ultrasonic washing 4~5 times, separation decompression drying in 70 DEG C of baking ovens is finally filtered, it is super to grind 100 mesh
The organobentonite containing surfactant is made in sound filter screen.
(2) preparation of organic carrier.Specifically, by the epoxy resin of content 25~45%, vinyl chloride-vinyl acetate resin, polyester resin,
One or more of polyurethane, acrylic resin resin is dissolved in 53~73% isophorones, DBE, dimethylformamide, diethyl
Glycol monobutyl ether acetate, dimethyl glutarate, hexanedioic acid dimethyl ester, t-butyl methyl ether one or more kinds of mixed solvents
In, 70 DEG C of stirring in water bath of constant temperature, it is to be dissolved completely after be down to room temperature, the blocked isocyanate or dicyandiamide of addition 2~5%
Or imidazoles, organic carrier is made in dispersion 40min under high revolving speed.
(3) preparation of slurry.Specifically, silver powder is mixed with organic carrier and organobentonite to dispersion and conductive paste is made
Material.Specifically, weigh raw material by following mass percent: 1~5wt%'s utilizes surfactant-modified obtained organic swelling
Soil, the silver powder of 35~65wt% and the organic carrier of 34~60wt%.Organic carrier and organic modified bentonite are used double
Planetary mixer premixing is slurried, 2~5h of stirring infiltration in dispersion machine, then silver powder and premix centrotheca are used three-roll grinder
Dispersion, until slurry fineness is less than 6 μm, last vacuum deaerator obtains high-performance made from a kind of organic modified bentonite
Low-temperature solidified silver paste.
Embodiment 1
Reaction flask is taken, 8 parts of cetyl trimethylammonium bromides and octadecyltrimethylammonium chloride (W:W=1:1) are added
Enter into 10 times of deionized waters and mixed surfactant is made.Another reaction flask is taken, 5 parts of Na base bentonites are added to 10 times
In deionized water, bentonite suspension is made in 50 DEG C of high speed dispersions of constant temperature.60 DEG C are warming up to, is slowly added under stirring conditions
Enter prepared surfactant solution, high speed dispersion 3h, reacts it sufficiently under high speed disperser, reuses ultrasonic wavelength-division
6h is dissipated, centrifugation in centrifuge is put into.With deionized water by organobentonite ultrasonic washing 4 times of synthesis, separation is finally filtered,
The decompression drying in 70 DEG C of baking ovens ground 100 mesh ultrasound filtrations sieve, surfactant-modified organic swelling is made
Soil.
35wt% vinyl chloride-vinyl acetate resin and polyurethane are added to 63wt% dimethyl glutarate, two according to (W:W=2:1)
Dimethyl phthalate in the mixed solvent (V:V=1:1), 70 DEG C of stirring in water bath of constant temperature, it is to be dissolved completely after be down to room temperature, add 2wt%
Blocked isocyanate, organic carrier is made in dispersion 40min under high revolving speed.
Raw material is weighed by following mass percent: 35wt% piece powder (tap density 2.4g/cm3, average grain diameter 6.7um, burning
Damage < 1wt%, specific surface area 1.5m2/ g), the organic carrier of 60wt%, the organic modified bentonite of 5wt%；By organic carrier,
Organic modified bentonite is slurried using double planetary mixer premixing in mass ratio, the stirring infiltration 2h in dispersion machine, then will be silver-colored
Powder and premix centrotheca are dispersed using three-roll grinder, and until slurry fineness is less than 6 μm, last vacuum deaerator obtains one kind
High-performance low-temperature solidified silver paste made from organic modified bentonite.
Embodiment 2
Reaction flask is taken, 9 parts of tetradecyltrimethylammonium bromide and eicosyl trimethyl ammonium chloride (W:W=2:1) are added
Enter into 12 times of deionized waters and mixed surfactant is made.Another reaction flask is taken, 6 parts of Na base bentonites are added to 15 times
In deionized water, bentonite suspension is made in 55 DEG C of high speed dispersions of constant temperature.65 DEG C are warming up to, is slowly added under stirring conditions
Enter prepared surfactant solution, high speed dispersion 2.5h, reacts it sufficiently under high speed disperser, reuses ultrasonic wave
Disperse 4h, is put into centrifugation in centrifuge.With deionized water by organobentonite ultrasonic washing 4 times of synthesis, finally filters and divide
From the decompression drying in 70 DEG C of baking ovens ground 100 mesh ultrasound filtrations sieve, surfactant-modified organic bentonite is made
Profit soil.
40wt% polyester resin and epoxy resin are added to 57wt% butyl acetic acid according to (W:W=1:2)
Ester, dimethyl glutarate, isophorone in the mixed solvent (V:V:V=2:2:1), 70 DEG C of stirring in water bath of constant temperature are to be dissolved complete
After be down to room temperature, add 3wt% blocked isocyanate, organic carrier is made in dispersion 40min under high revolving speed.
Raw material is weighed by following mass percent: mixed-powder (W:W=9:1, the flake silver powder of 50wt% piece powder, ball powder
Tap density 4.0g/cm3, average grain diameter 4.5um, scaling loss < 1wt%, specific surface area 2.5m2/g；Spherical silver powder tap density
5.0g/cm3, average grain diameter 0.5um, scaling loss < 0.5wt%, specific surface area 1.0m2/ g), the organic carrier of 48wt%, 2wt% changes
Property machine bentonite；Organic carrier, organic modified bentonite are slurried using double planetary mixer premixing in mass ratio, dispersed
Stirring infiltration 3h in machine, then silver powder and premix centrotheca are dispersed using three-roll grinder, until slurry fineness is less than 6 μm,
Last vacuum deaerator obtains high-performance low-temperature solidified silver paste made from a kind of organic modified bentonite.
Embodiment 3
Reaction flask is taken, by 10 parts of tetradecyl trimethyl ammonium chlorides, octadecyltrimethylammonium chloride, octadecyl trichlorine
Silane (W:W:W=1:1:2), which is added in 15 times of deionized waters, is made mixed surfactant.Another reaction flask is taken, by 8 parts of Na
Base bentonite is added in 12 times of deionized water, 60 DEG C of high speed dispersions of constant temperature, and bentonite suspension is made.70 DEG C are warming up to,
It is slowly added to prepared surfactant solution under stirring conditions, high speed dispersion 2h, fills it under high speed disperser
Divide reaction, reuses ultrasonic wave dispersion 3h, be put into centrifugation in centrifuge.With deionized water by the organobentonite ultrasonic wave of synthesis
Washing 4 times, finally filters separation, and the decompression drying in 70 DEG C of baking ovens ground 100 mesh ultrasound filtrations sieve, surface is made
The modified organobentonite of activating agent.
45wt% epoxy resin and acrylic resin are added to 51wt% dimethyl glutarate, according to (W:W=2:1)
Acid dimethyl in the mixed solvent (V:V:V=1:1:1), 70 DEG C of stirring in water bath of constant temperature, it is to be dissolved completely after be down to room temperature, add
4wt% dicyandiamide, organic carrier is made in dispersion 40min under high revolving speed.
Raw material is weighed by following mass percent: 65wt% ball powder (spherical silver powder tap density 4.1g/cm3, average grain diameter
1.4um, scaling loss < 0.5wt%, specific surface area 0.8m2/ g), the organic carrier of 34wt%, 1wt% organic modified bentonite；It will
Organic carrier, organic modified bentonite are slurried using double planetary mixer premixing in mass ratio, and infiltration is stirred in dispersion machine
3h, then silver powder and premix centrotheca are dispersed using three-roll grinder, until slurry fineness is less than 6 μm, last vacuum deaerator
Obtain high-performance low-temperature solidified silver paste made from a kind of organic modified bentonite.
Electrocondution slurry prepared in the above embodiments is tested for the property, the specific test method is as follows.
(1) line width pattern is printed
By 350 mesh web plates, electrocondution slurry is printed on PET film layer, prints snakelike 0.6mm × 1m conductive line, 135
DEG C × 30min solidification after take out.It is cooled to room temperature whether straight, line width width of observing conductive line edge in contourgraph,
Calculating judges whether that flared end (flared end rate≤5%) occurs.
(2) electrical performance testing
The resistance of serpentine, uses Fluke17B after test solidifies+Multimeter, film thickness gauge to the silver wire of line width 0.6mm into
The test of row resistance, film thickness obtains the resistivity of slurry by resistivity calculation formula.
(3) anti-settling is tested
Prepared 300g silver paste is put into 500ml graduated cylinder, is placed 6 months at room temperature, whether observation slurry occurs
Sedimentation, layering.
(4) modified alta-mud scanning electron microscope
The modified alta-mud that will be prepared carries out microscopic appearance observation with field emission scanning electron microscope.
The results are shown in Table 1 for the partial test of electrocondution slurry prepared in the above embodiments.
The performance indicator of the electrocondution slurry of 1 Examples 1 to 3 of table preparation
| Performance indicator | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Curing time (min) | 30 | 30 | 30 |
| Solidification temperature (DEG C) | 135 | 135 | 200 |
| Resistance (Ω) | 103 | 76 | 58 |
| Film thickness (um) | 5.96 | 7.74 | 8.84 |
| Resistivity (Ω cm) | 3.68×10-5 | 3.53×10-5 | 3.07×10-5 |
| (6 months) are tested in anti-settling | Without sedimentation, layering | Without sedimentation, layering | Without sedimentation, layering |
As can be seen from Table 1, the present invention can be after low-temperature setting, and silver paste possesses lower resistance, ensure that charge
Effectively transmission, volume resistivity is low, while with good stability.Silk-screen printing test result show silk-screen line width it is stable,
Printed resolution is high, figure is smooth sees figure.
Organic modified bentonite produced by the present invention meets the requirement of high-performance low-temperature solidified electric slurry, not only
The Effective Regulation for realizing slurry viscosity, obtains good rheological behavior, meets high-resolution silk-screen printing requirement, Er Qieyou
The bentonitic addition of machine effectively solves the decentralized stable problem of low viscosity resin carrier and silver powder particles, starches with traditional printing electronics
Material is compared, and organobentonite enhances system powder inside electrical charges between particles repulsion and space stability ultimate load, so that superfine powder
Somaplasm material has good stably dispersing performance, and agglomeration, sedimentation and layering are not susceptible in storing process, and printing process pattern causes
It is close full, bubble-free, stomata.After electric slurry solidification, organobentonite facilitates conductive powder body interface overlap joint, realizes efficient
Conductive path, conductive film layer have good electric property.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. one kind is by surfactant-modified method for preparing organobentonite, it is characterised in that contain following processing step and spy
Levy material:
(1) reaction flask is taken, 8~10 parts of two or more surfactants are added in 10~15 times of deionized waters,
Mixed surfactants solutions are made, takes another reaction flask, 5~8 parts of Na base bentonites is added to 10~15 times of deionization
In water, bentonite suspension is made in 50~60 DEG C of high speed dispersions of constant temperature, is warming up to 60~70 DEG C and is slowly added under stirring conditions
Enter prepared surfactant solution, 2~3h of high speed dispersion, reacts it sufficiently under high speed disperser, reuses ultrasound
Wavelength-division dissipates 3~6h, is put into centrifugation in centrifuge；
(2) surfactant is that quaternary ammonium salt cationic and halogenated silanes form, and molecular characterization is respectively [(CH3)3NR]+X-Or
[(CH3)2NR2]+X-And SiX3R, wherein X represents halogens, and R represents alkyl, and main carbochain C atom number is in 10~20 ranges
It is interior；
(3) with deionized water by organobentonite ultrasonic washing 4~5 times of synthesis, separation is finally filtered, in 70 DEG C of baking ovens
Decompression drying ground 100 mesh ultrasound filtrations sieve, the organobentonite containing surfactant is made.
2. a kind of preparation method containing organobentonite low-temperature solidified silver paste, it is characterised in that: silver paste is by mass percentage
Following each raw material composition, the modified organobentonite of 1~5wt% claim 1, the silver powder of 35~65wt% and 34~
The organic carrier of 60wt%, the silver powder are made of one or both of sheet, spherical silver powder, the range vibration of flake silver powder
2.4~4.0g/cm of real density3, 4.5~6.7 μm of average grain diameter, scaling loss < 1%, 1.5~2.5m of specific surface area2/ g, spherical silver
4.1~5.0g/cm of range tap density of powder3, 0.5~1.4 μm of average grain diameter, scaling loss < 0.5%, specific surface area 0.8~
1.0m2/g；
The modified organobentonite of organic carrier and claim 1 is slurried using double planetary mixer premixing, in dispersion machine
Middle stirring infiltrates 2~5h, then by silver powder and premix centrotheca using the dispersion of three spoke grinders, until slurry fineness is less than 6 μm,
Last vacuum deaerator is to obtain a kind of organobentonite low-temperature solidified silver paste modified containing claim 1.
3. a kind of preparation method containing organobentonite low-temperature solidified silver paste according to claim 2, which is characterized in that
Organic carrier the preparation method is as follows:
Resin is dissolved in organic solvent, 70 DEG C of stirring in water bath of constant temperature, it is to be dissolved completely after be down to room temperature, add curing agent, it is high
Disperse 40min under revolving speed and organic carrier is made.
4. a kind of preparation method containing organobentonite low-temperature solidified silver paste, feature according to claim 3 exist
In the resin includes one or more of epoxy resin, vinyl chloride-vinyl acetate resin, polyester resin, polyurethane, acrylic resin group
At.
5. a kind of preparation method containing organobentonite low-temperature solidified silver paste, feature according to claim 3 exist
In, the organic solvent be isophorone, DBE, dimethylformamide, butyl acetate, dimethyl glutarate,
One or more kinds of mixed solvents of acid dimethyl, t-butyl methyl ether.
6. a kind of preparation method containing organobentonite low-temperature solidified silver paste, feature according to claim 3 exist
In the curing agent is blocked isocyanate or dicyandiamide or imidazoles, and wherein blocked isocyanate unseals temperature
It is 110~135 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202232.5A CN108597676B (en) | 2017-11-27 | 2017-11-27 | A kind of preparation method and application containing organobentonite low-temperature solidified silver paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202232.5A CN108597676B (en) | 2017-11-27 | 2017-11-27 | A kind of preparation method and application containing organobentonite low-temperature solidified silver paste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108597676A CN108597676A (en) | 2018-09-28 |
| CN108597676B true CN108597676B (en) | 2019-09-27 |
Family
ID=63633212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202232.5A Active CN108597676B (en) | 2017-11-27 | 2017-11-27 | A kind of preparation method and application containing organobentonite low-temperature solidified silver paste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108597676B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109645986B (en) * | 2018-11-30 | 2021-10-22 | 昆明贵金属研究所 | Low-temperature cured silver/silver chloride slurry for flexible bioelectrode and preparation method thereof |
| CN110136863B (en) * | 2019-04-29 | 2020-09-15 | 南通天盛新能源股份有限公司 | Low-temperature conductive silver paste for HIT solar cell and preparation method thereof |
| CN112735628B (en) * | 2020-12-01 | 2022-03-29 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Low-temperature polymer conductive silver paste and preparation method thereof |
| CN112735629B (en) * | 2020-12-01 | 2022-04-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Low-temperature polymer conductive silver paste with low silver content and preparation method thereof |
| CN113903497B (en) * | 2021-12-09 | 2022-03-08 | 西安宏星电子浆料科技股份有限公司 | Isolation medium slurry and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004039379A (en) * | 2002-07-02 | 2004-02-05 | Sumitomo Electric Ind Ltd | Conductive paste, conductive membrane, and manufacturing method of conductive membrane |
| CN102295295A (en) * | 2011-06-13 | 2011-12-28 | 中国石油化工股份有限公司 | Method for preparing organoclay by using composite organic modifier |
| CN104332214A (en) * | 2014-10-28 | 2015-02-04 | 深圳市思迈科新材料有限公司 | Low-temperature curing conductive silver paste and preparation method thereof |
| CN105632588A (en) * | 2016-02-22 | 2016-06-01 | 昆山海斯电子有限公司 | High-conductivity silver paste and preparation method thereof |
-
2017
- 2017-11-27 CN CN201711202232.5A patent/CN108597676B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004039379A (en) * | 2002-07-02 | 2004-02-05 | Sumitomo Electric Ind Ltd | Conductive paste, conductive membrane, and manufacturing method of conductive membrane |
| CN102295295A (en) * | 2011-06-13 | 2011-12-28 | 中国石油化工股份有限公司 | Method for preparing organoclay by using composite organic modifier |
| CN104332214A (en) * | 2014-10-28 | 2015-02-04 | 深圳市思迈科新材料有限公司 | Low-temperature curing conductive silver paste and preparation method thereof |
| CN105632588A (en) * | 2016-02-22 | 2016-06-01 | 昆山海斯电子有限公司 | High-conductivity silver paste and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108597676A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108597676B (en) | A kind of preparation method and application containing organobentonite low-temperature solidified silver paste | |
| CN108133768A (en) | A kind of high conductivity low temperature curing type electrocondution slurry and preparation method thereof | |
| CN106928773A (en) | It is a kind of to can be used for graphene composite conductive ink of inkjet printing and preparation method thereof | |
| CN107674505A (en) | A kind of Graphene conductive ink and preparation method thereof | |
| CN109401443A (en) | A kind of graphene coated copper nano-particle composite material conductive ink and preparation method thereof | |
| CN102097183B (en) | Process for preparing conductive slurry for crystalline silicon solar cell front electrode | |
| CN105788700A (en) | Quick-dry type silver paste used for PCB through hole and preparation method for quick-dry type silver paste | |
| CN107427912A (en) | Cover silver-bearing copper powder and the conductive paste, conductive coating paint, conductive sheet of silver-bearing copper powder are covered using this | |
| JP2013139589A (en) | Silver fine particles, method for producing the same, and conductive paste, conductive film, and electronic device containing the silver fine particles | |
| US3932311A (en) | Electrically conducting adhesive composition | |
| CN105802346B (en) | A kind of composite conducting ink film and preparation method thereof | |
| WO2017154251A1 (en) | Conductive paste | |
| CN106251931A (en) | Low-temperature cured conductive silver slurry and preparation method thereof | |
| CN108367927A (en) | The coating graphite particle of silver, the coating graphite mixed powder of silver and its manufacturing method and electrocondution slurry | |
| CN111707723A (en) | Silver/silver chloride slurry with high signal-to-noise ratio for biological detection electrode and preparation method thereof | |
| CN107614164A (en) | Metallic nano-particle manufacture composition | |
| CN113527948A (en) | Conductive ink for pad printing process and preparation method thereof | |
| CN109256234A (en) | A kind of high-performance conductive silver paste and preparation method thereof | |
| CN107405683A (en) | Copper powder and copper cream, conductive coating paint, the conductive sheet using the copper powder | |
| CN109439172A (en) | A kind of graphene waterborne conductive coating and preparation method thereof with strong screening effect | |
| CN105788703B (en) | A kind of anti-oxidant silver-bearing copper slurry for being used to be electromagnetically shielded and preparation method thereof | |
| KR101386085B1 (en) | Conductive Metal Nano Particle Ink and Manufacturing Method thereof | |
| CN109887639A (en) | A kind of solderable low temperature curing type function silver paste and preparation method thereof | |
| CN102174284B (en) | Production method of water-based attapulgite conductive paint | |
| CN109777202A (en) | A kind of electronic tag electrically conductive ink and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |