CN106876006A - A kind of preparation method of touch-screen laser engraving silver paste - Google Patents
A kind of preparation method of touch-screen laser engraving silver paste Download PDFInfo
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- CN106876006A CN106876006A CN201710273389.0A CN201710273389A CN106876006A CN 106876006 A CN106876006 A CN 106876006A CN 201710273389 A CN201710273389 A CN 201710273389A CN 106876006 A CN106876006 A CN 106876006A
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- silver paste
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- laser engraving
- organic carrier
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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
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- 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
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- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a kind of preparation method of touch-screen laser engraving silver paste, comprise the following steps, 1) preparation of organic carrier, by mass percentage, take in one or more mixtures in one or more propylene glycol methyl ether acetates for dissolving in 50-80%, dipropylene glycol methyl ether acetate, tripropylene glycol monobutyl ether acetate in 20-50% polyurethane resin, phenolic resin, methylcellulose heated at constant temperature and obtain organic carrier to being completely dissolved；2) preparation of slurry.By the preparation method of inventive touch screen laser engraving silver paste the volume resistance of conductive silver paste can be made extremely low, adhesive force, ohm contact performance with ito film are improved well, greatly improved with the binding ability of dielectric layer, luminescent layer and dielectric ink with oxidation silver paste, and improve the performances such as screen printability, case hardness, corrosion resistance, the environment service life of silver paste.
Description
Technical field
The present invention relates to silver paste manufacture technology field, and in particular to a kind of making side of touch-screen laser engraving silver paste
Method.
Background technology
Tin-doped indium oxide material is a kind of N-type semiconductor material, because it is passed through with high conductivity, high visible
Rate, mechanical hardness high and high chemical stability etc., therefore be that touch-screen, liquid crystal display, electroluminescent device, plasma show
The conventional material of the transparency electrode of device, solar cell and other electronic instruments.
Tin-doped indium oxide film refers to the application in touch-screen and organic electroluminescent, by the side of vacuum magnetic-control sputtering
Formula is deposited on tin-doped indium oxide film superfines on polyester slice or glass, formed light transmittance be up to more than 80% it is uniform
Conductive film base material, wherein the area resistance of the key factor to of influence tin-doped indium oxide film electric conductivity can be by controlling tin
The mode such as content, oxygen content and process conditions when preparing tin-doped indium oxide film reaches requirement, and it is resistance area that resistance is interval
Between be 30 to 10K ohm.
Conductive silver paste used is mainly by being screen printed onto on ito thin film and dielectric (barium powder) on the touchscreen
It is used as two electrodes, when voltage is added between the two electrodes, electric field will be produced, so that excitation luminescent powder, hair
Go out the light of the different shades of colour because of mixed material.
EL sheet is main to be made up of the part such as base material, electrode material, luminescent material, dielectric material and insulating materials.
Electrode material-the aluminium foil or external silver paste for commonly using at present, are primarily present problems with：On the touchscreen, there is resistance
Rate of change is larger, and Ohmic contact is unstable, so as to influence properties of product；In electroluminescent, silver paste is bad with ito film bonding,
Bad, and luminance nonuniformity is matched with dielectric ink.
Based on this, study and develop and design a kind of preparation method of touch-screen laser engraving silver paste.
The content of the invention
The present invention provides a kind of preparation method of touch-screen laser engraving silver paste.
It is of the invention to be achieved through the following technical solutions：
A kind of preparation method of touch-screen laser engraving silver paste, 1) organic carrier preparation, by mass percentage, take
One or more in 20-50% polyurethane resin, phenolic resin, methylcellulose dissolve in the third the two of 50-80%
In one or more mixtures in alcohol methyl ether acetate, dipropylene glycol methyl ether acetate, tripropylene glycol monobutyl ether acetate
Heated at constant temperature obtains organic carrier to being completely dissolved；
2) preparation of slurry, by percentage to the quality, takes 45-75% flake silver powder, and average grain diameter is 0.1-
2.5um, takes 8-28% step 1) in organic carrier, mixing and stirring obtains silver powder mixture；Take 2.5-11.5%
Flake copper, average grain diameter be 0.5-4.5um, take 6-18% step 1) in organic carrier, mixing obtain copper powder mix
It is fit；The additive for taking 6-11% is added in the silver powder mixture, is sufficiently stirred for planetary stirring machine, is subsequently adding
To in the copper powder mixture, it is sufficiently stirred for planetary stirring machine, untill well mixed, through being filtrated to get preliminary slurry
Material；Preliminary slurry carries out 3-8 times rollings with three-high mill, untill reaching the fineness of 1.5-4.5um, then by 400 purposes
Screen filtration obtains slurry finished product.
It is preferred that, the step 1) organic carrier preparation in, by polyurethane resin, phenolic resin, methylcellulose
One or more are heated to 80 DEG C and constant temperature, and are fully immersed into polyurethane resin, phenolic resin, methylcellulose
One or more.
It is preferred that, the step 2) in 6-11% additive include levelling agent, thickener, defoamer, the levelling agent,
Thickener, the total amount ratio of defoamer are 1-2：0.4—1.5：1—2.
It is preferred that, the grain diameter of silver paste material is 1.5-8um, and viscosity is 10000-30000 centipoises.
It is preferred that, the thickener is at least one in aerosil, Tissuemat E, rilanit special, described to disappear
Infusion is at least one in ethanol, n-butanol, methyl-silicone oil.
It is preferred that, the levelling agent is at least one in castor oil, tributyl phosphate, O-phthalic ester dibutyl ester.
The present invention compared with prior art, has the following advantages and advantages：
(1) present invention solves electric conductivity, compactness, Ohmic contact by the selection to flake silver powder；By to adding
Plus the selection of agent solves the Ohmic contact of ito film.A size controlling of silver powder is selected at 2~10 μm, tap density 2.2~
2.5g/ml, can so make silver powder have good dispersiveness, so as to solve electric conductivity, compactness.To additive by rational
Proportional arrangement, so as to solve the problems, such as that silver paste resistance variations are larger and ito film Ohmic contact is bad.
(2) the volume resistance pole of conductive silver paste can be made by the preparation method of inventive touch screen laser engraving silver paste
Low, adhesive force, ohm contact performance with ito film are improved well, with oxidation silver paste and dielectric layer, luminescent layer and insulation
The binding ability of ink is greatly improved, and is improved the screen printability of silver paste, case hardness, corrosion resistance, environment and used
The performances such as life-span.
(3) the touch-screen laser engraving silver paste that the present invention is prepared can be widely used on the product of touch-screen：Such as hand
The resistance-type man-machine interface product such as machine, PDA, DVD videocorder, panel computer.Separately it is usable in electroluminescent product：Such as hand
The LCD backlight of machine, PDA.
Specific embodiment
To make the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment, the present invention is made
Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this
The restriction of invention.
Embodiment 1：
A kind of preparation method of touch-screen laser engraving silver paste, comprises the following steps：
1) preparation of organic carrier, by mass percentage, takes 20% polyurethane resin, phenolic resin, Methyl cellulose
One or more propylene glycol methyl ether acetates for dissolving in 50% in element, dipropylene glycol methyl ether acetate, tripropylene glycol fourth
Heated at constant temperature obtains organic carrier to being completely dissolved in one or more mixtures in ether acetate；
2) preparation of slurry by percentage to the quality, takes 45% flake silver powder, and average grain diameter is 0.1um, takes 8% step
1) organic carrier in, mixing and stirring obtains silver powder mixture；2.5% flake copper is taken, average grain diameter is 0.5um,
Take 6% step 1) in organic carrier, mixing obtain copper powder mixture；Take 6% additive be added to the silver powder mix
In zoarium, it is sufficiently stirred for planetary stirring machine, is then added in the copper powder mixture, is fully stirred with planetary stirring machine
Mix, untill well mixed, through being filtrated to get preliminary slurry；Preliminary slurry carries out 3 times rollings with three-high mill, reaches
Untill the fineness of 1.5um, then slurry finished product is obtained by the screen filtration of 400 mesh.
Wherein, the step 1) organic carrier preparation in, by polyurethane resin, phenolic resin, methylcellulose
One or more are heated to 80 DEG C and constant temperature, and are fully immersed into polyurethane resin.
Wherein, the step 2) in 6% additive include levelling agent, thickener, defoamer, the levelling agent, thickening
Agent, the total amount ratio of defoamer are 1：0.4：1.
Wherein, the grain diameter of silver paste material is 1.5um, and viscosity is 10000 centipoises.
Wherein, the thickener is aerosil, and the defoamer is ethanol.
Wherein, the levelling agent is castor oil.
Embodiment 2：
A kind of preparation method of touch-screen laser engraving silver paste, comprises the following steps：
1) preparation of organic carrier, by mass percentage, takes 50% polyurethane resin, phenolic resin, Methyl cellulose
One or more propylene glycol methyl ether acetates for dissolving in 80% in element, dipropylene glycol methyl ether acetate, tripropylene glycol fourth
Heated at constant temperature obtains organic carrier to being completely dissolved in one or more mixtures in ether acetate；
2) preparation of slurry by percentage to the quality, takes 75% flake silver powder, and average grain diameter is 2.5um, takes 28% step
It is rapid 1) in organic carrier, mixing and stirring obtains silver powder mixture；11.5% flake copper is taken, average grain diameter is
4.5um, takes 18% step 1) in organic carrier, mixing obtain copper powder mixture；The additive for taking 11% is added to institute
State in silver powder mixture, be sufficiently stirred for planetary stirring machine, be then added in the copper powder mixture, use planetary stirring
Machine is sufficiently stirred for, untill well mixed, through being filtrated to get preliminary slurry；Preliminary slurry carries out 8 times rollings with three-high mill,
Untill reaching the fineness of 4.5um, then slurry finished product is obtained by the screen filtration of 400 mesh.
Wherein, the step 1) organic carrier preparation in, phenolic resin is heated to 80 DEG C and constant temperature, and be fully immersed into
To phenolic resin.
Wherein, the step 2) in 11% additive include levelling agent, thickener, defoamer, the levelling agent, thickening
Agent, the total amount ratio of defoamer are 2：1.5：2.
Wherein, the grain diameter of silver paste material is 8um, and viscosity is 30000 centipoises.
Wherein, the thickener is Tissuemat E, and the defoamer is n-butanol.
Wherein, the levelling agent is tributyl phosphate.
Embodiment 3：
A kind of preparation method of touch-screen laser engraving silver paste, comprises the following steps：
1) preparation of organic carrier, by mass percentage, take 65% polyurethane resin dissolve in 70% DPG
Heated at constant temperature obtains organic carrier to being completely dissolved in methyl ether acetate；
2) preparation of slurry by percentage to the quality, takes 60% flake silver powder, and average grain diameter is 1.0um, takes 20% step
It is rapid 1) in organic carrier, mixing and stirring obtains silver powder mixture；8.5% flake copper is taken, average grain diameter is
3.5um, takes 12% step 1) in organic carrier, mixing obtain copper powder mixture；Take 8% additive be added to it is described
In silver powder mixture, it is sufficiently stirred for planetary stirring machine, is then added in the copper powder mixture, uses planetary stirring machine
It is sufficiently stirred for, untill well mixed, through being filtrated to get preliminary slurry；Preliminary slurry carries out 5 times rollings with three-high mill, reaches
To the fineness of 3um, then slurry finished product is obtained by the screen filtration of 400 mesh.
Wherein, the step 1) organic carrier preparation in, methylcellulose is heated to 80 DEG C and constant temperature, and melt completely
Enter to methylcellulose.
Wherein, the step 2) in 8.5% additive include levelling agent, thickener, defoamer, the levelling agent, increasing
Thick dose, the total amount ratio of defoamer be 1.5：1.8：1.5.
Wherein, the grain diameter of silver paste material is 6.5um, and viscosity is 15000 centipoises.
Wherein, the thickener is rilanit special, and the defoamer is methyl-silicone oil.
Wherein, the levelling agent is O-phthalic ester dibutyl ester.
Above-described specific embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc. all should include
Within protection scope of the present invention.
Claims (6)
1. a kind of preparation method of touch-screen laser engraving silver paste, it is characterised in that：Comprise the following steps,
1) preparation of organic carrier, by mass percentage, takes 20-50% polyurethane resin, phenolic resin, Methyl cellulose
One or more propylene glycol methyl ether acetates for dissolving in 50-80%, dipropylene glycol methyl ether acetate in element, 3 the third two
Heated at constant temperature obtains organic carrier to being completely dissolved in one or more mixtures in alcohol monobutyl ether acetate；
2) preparation of slurry, by percentage to the quality, takes 45-75% flake silver powder, and average grain diameter is 0.1-2.5um, is taken
8-28% step 1) in organic carrier, mixing and stirring obtains silver powder mixture；2.5-11.5% flake copper is taken,
Average grain diameter be 0.5-4.5um, take 6-18% step 1) in organic carrier, mixing obtain copper powder mixture；Take 6-
11% additive is added in the silver powder mixture, is sufficiently stirred for planetary stirring machine, is then added to the copper powder
In mixture, it is sufficiently stirred for planetary stirring machine, untill well mixed, through being filtrated to get preliminary slurry；Preliminary slurry
3-8 times rollings are carried out with three-high mill, untill reaching the fineness of 1.5-4.5um, is then obtained by the screen filtration of 400 mesh
Slurry finished product.
2. the preparation method of a kind of touch-screen laser engraving silver paste according to claim 1, it is characterised in that：The step
In the preparation of rapid 1) organic carrier, one or more in polyurethane resin, phenolic resin, methylcellulose are heated to
80 DEG C and constant temperature, and it is fully immersed into one or more in polyurethane resin, phenolic resin, methylcellulose.
3. the preparation method of a kind of touch-screen laser engraving silver paste according to claim 1, it is characterised in that：The step
It is rapid 2) in 6-11% additive include levelling agent, thickener, defoamer, the levelling agent, thickener, the total amount of defoamer
Than being 1-2：0.4—1.5：1—2.
4. the preparation method of a kind of touch-screen laser engraving silver paste according to claim 1, it is characterised in that：The silver
The grain diameter of slurry is 1.5-8um, and viscosity is 10000-30000 centipoises.
5. the preparation method of a kind of touch-screen laser engraving silver paste according to claim 3, it is characterised in that：The increasing
Thick dose is at least one in aerosil, Tissuemat E, rilanit special, and the defoamer is ethanol, n-butanol, first
At least one in base silicone oil.
6. the preparation method of a kind of touch-screen laser engraving silver paste according to claim 5, it is characterised in that：The stream
Flat agent is at least one in castor oil, tributyl phosphate, O-phthalic ester dibutyl ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273389.0A CN106876006A (en) | 2017-04-21 | 2017-04-21 | A kind of preparation method of touch-screen laser engraving silver paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710273389.0A CN106876006A (en) | 2017-04-21 | 2017-04-21 | A kind of preparation method of touch-screen laser engraving silver paste |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645318A (en) * | 2008-08-07 | 2010-02-10 | 上海昌银电子材料科技有限公司 | Conductive silver paste special for circuit of laptop keyboard and preparation method thereof |
| CN101770829A (en) * | 2010-03-16 | 2010-07-07 | 彩虹集团公司 | Special silver electrode paste for touch screen and preparation method thereof |
| CN102262914A (en) * | 2010-05-31 | 2011-11-30 | 比亚迪股份有限公司 | Conductive silver paste and preparation method thereof as well as solar cell slice |
| CN104650653A (en) * | 2013-11-22 | 2015-05-27 | 苏州冷石纳米材料科技有限公司 | Nano-conductive silver paste and preparation method thereof |
-
2017
- 2017-04-21 CN CN201710273389.0A patent/CN106876006A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645318A (en) * | 2008-08-07 | 2010-02-10 | 上海昌银电子材料科技有限公司 | Conductive silver paste special for circuit of laptop keyboard and preparation method thereof |
| CN101770829A (en) * | 2010-03-16 | 2010-07-07 | 彩虹集团公司 | Special silver electrode paste for touch screen and preparation method thereof |
| CN102262914A (en) * | 2010-05-31 | 2011-11-30 | 比亚迪股份有限公司 | Conductive silver paste and preparation method thereof as well as solar cell slice |
| CN104650653A (en) * | 2013-11-22 | 2015-05-27 | 苏州冷石纳米材料科技有限公司 | Nano-conductive silver paste and preparation method thereof |
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Effective date of registration: 20180712 Address after: 621000 261 east section of Fei Yun Road, hi tech Zone, Mianyang, Sichuan. Applicant after: Mianyang Zhong Ye science and Technology Co., Ltd. Address before: No. 39, Sanjiang Avenue, Mianyang, Sichuan, Sichuan Applicant before: MIANYANG QIFAN TECHNOLOGY CO., LTD. |
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Application publication date: 20170620 |