CN109616240A - A kind of thin grid low-temperature conductive silver paste of solar energy HIT battery and preparation method thereof - Google Patents
A kind of thin grid low-temperature conductive silver paste of solar energy HIT battery and preparation method thereof Download PDFInfo
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- CN109616240A CN109616240A CN201811522547.2A CN201811522547A CN109616240A CN 109616240 A CN109616240 A CN 109616240A CN 201811522547 A CN201811522547 A CN 201811522547A CN 109616240 A CN109616240 A CN 109616240A
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 162
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 229920002521 macromolecule Polymers 0.000 claims abstract description 68
- 239000002002 slurry Substances 0.000 claims abstract description 63
- 239000003822 epoxy resin Substances 0.000 claims abstract description 41
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 41
- 239000004332 silver Substances 0.000 claims abstract description 32
- 229910052709 silver Inorganic materials 0.000 claims abstract description 32
- 238000007639 printing Methods 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 16
- 239000012948 isocyanate Substances 0.000 claims abstract description 7
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 64
- 239000007787 solid Substances 0.000 claims description 34
- 235000011266 Passiflora quadrangularis Nutrition 0.000 claims description 30
- 244000179684 Passiflora quadrangularis Species 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 30
- 239000004593 Epoxy Substances 0.000 claims description 27
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 17
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 150000002148 esters Chemical class 0.000 claims description 12
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 6
- OWIKHYCFFJSOEH-UHFFFAOYSA-N Isocyanic acid Chemical compound N=C=O OWIKHYCFFJSOEH-UHFFFAOYSA-N 0.000 claims description 3
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000007650 screen-printing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 10
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Conductive Materials (AREA)
- Photovoltaic Devices (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention relates to thin grid low-temperature conductive silver pastes of a kind of solar energy HIT battery and preparation method thereof, it sequentially includes the following steps: and 1. prepares macromolecule resin carrier, 2. preparing silver paste, taking average partial size is 1~1.2um, the thick moderate pie silver powder of diameter, silver powder 89%~92% by mass percentage, step macromolecule epoxy resin carrier 6%~9% poly- 1. obtained is added in high speed disperser, high speed disperser is dispersed to obtain a preliminary uniform carrier, then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, Blocked Isocyanate Curing Agents 1.6%~1.8%, macromolecule dispersing agent 0.3~0.5% is added to planetary mixer and removes bubble after vacuumizing, obtain being uniformly dispersed viscosity 260~330pa.s conductive silver paste slurry；3. the design of filter slurry preparation method is rationally, the properties such as electric conductivity, viscosity, printing, pulling force of low-temperature conductive silver paste are superior, are able to satisfy the thin grid requirement of solar energy HIT screen printing of battery.
Description
Technical field
The present invention relates to conductive silver paste fields, and in particular to a kind of thin grid low-temperature conductive silver paste of solar energy HIT battery and
Preparation method.
Background technique
Hetero-junctions HIT (Hereto-junction with Intrinsic Thin-layer) solar battery (while
Abbreviation HJT, SHJ, SJT etc.), substrate is usually made with N-shaped crystalline silicon, the amorphous silicon of broad-band gap makees emitter, which has double
Face symmetrical structure, n-type silicon substrate two sides two layers of thin intrinsic amorphous silicon layer, positive one layer of P-type non-crystalline silicon emitter layer, one layer of the back side
N-shaped amorphous silicon film back surface field；Transparent conductive oxide film is deposited with sputtering method on the thin amorphous silicon layer of two sides, is finally prepared
Conductive grid.
Conventionally employed sputtering method, which prepares conductive grid, at high cost, complex process, inefficiency, and due to
HIT battery constitutes PN junction using a-si, and HIT battery can be completed in 200 DEG C of low temperature below, so the conduction of HIT battery now
Grid can be prepared using silver paste through silk-screen printing technique, and specific practice is silver paste to be poured into one end of screen printing forme, uses scraper plate
Certain pressure is applied to the silver paste position on screen printing forme, while at the uniform velocity being moved towards the screen printing forme other end, silver paste is on the move
By scraper plate from mesh in be expressed on crystalline silicon formed specific shape conductive grid.
Whether electric conductivity, viscosity, printing, pulling force of silver paste etc. are to directly influence the conductive grid of HIT battery can be just
It is often used, each performance of the electric conductivity of silver paste, viscosity, printing, pulling force is not very superior currently on the market, indulges well known lead
Electrically influenced by silver powder content in silver paste, if silver powder content it is too small cannot form good contact can't be conductive lower than threshold,
Silver powder content, which is excessively then not easy to disperse to be easy to reunite, reduces viscosity, printing causes to be difficult to print specific shape, and because
Be that HIT battery is completed in 200 DEG C of low temperature below, silver paste does not have a silver powder sintering process when preparing, between silver powder, silver and substrate it
Between cohered by organic resin, silver powder pulling force is too small to be generally less than 1N (conventional crystalline silicon cell size uses high temperature sintering, silver
It is big that pulling force is connected with each other between powder, between silver and substrate by melt surface), stress is easily torn when by the pulling force for being greater than 1N
It splits.Therefore, it is necessary to prepare the low-temperature conductive silver paste that a kind of electric conductivity, viscosity, printing, each performance of pulling force can be met the requirements
The use of HIT battery is specialized in, and since conductive grid is divided into leading electric grid (abbreviation main grid) according to effect and size and carefully leads
Electric grid (referred to as thin grid), main grid is to play the role of summarizing for collecting thin gate current, there is two main grids, three main grids, five main grids
Point to the more demanding of pulling force, thin grid are for guiding the electric current requirement that whether there is or not several to pulling force lower and to electric conductivity, attachment
Force request is higher, is accordingly used in the conductive silver paste different from of manufacture main grid, thin grid.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of thin grid low-temperature conductive silvers of solar energy HIT battery
Slurry and preparation method thereof, low-temperature conductive silver paste comprehensive performance is superior, and specific technical solution is as follows:
A kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, sequentially includes the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 45%~50% solid propenoic acid modified epoxy is added to
In 50%~55% butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid is modified
After epoxy resin is completely dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, to take average partial size be 1~1.2um, the thick moderate pie silver powder of diameter, by mass percentage silver powder 89%~
92%, step macromolecule epoxy resin carrier 6%~9% poly- 1. obtained is added in high speed disperser, and high speed disperser disperse
To a preliminary uniform carrier, carrier is then poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary load
Body, Blocked Isocyanate Curing Agents 1.6%~1.8%, macromolecule dispersing agent 0.3~0.5% are added to planetary mixer and take out true
Bubble is removed after sky, obtain being uniformly dispersed viscosity 260~330pa.s conductive silver paste slurry；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
As a kind of preferred embodiment of the method for the present invention, the Blocked Isocyanate Curing Agents can be complete at 150 DEG C
Deblocking.
As a kind of preferred embodiment of the method for the present invention, sequentially include the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 47% solid propenoic acid modified epoxy is added to 53%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1um, diameter thickness is moderate is taken, silver powder 90%, step are poly- 1. by mass percentage
Macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, and high speed disperser is dispersed to obtain preliminary uniform one
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanic acid by secondary carrier
Ester curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and is uniformly dispersed
Conductive silver paste slurry of the viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
As a kind of preferred embodiment of the method for the present invention, sequentially include the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 46% solid propenoic acid modified epoxy is added to 54%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.1um, diameter thickness is moderate is taken, silver powder 91%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 7% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.65%, macromolecule dispersing agent 0.35% is added to planetary mixer and removes bubble after vacuumizing, and is dispersed
Conductive silver paste slurry of the uniform viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
As a kind of preferred embodiment of the method for the present invention, sequentially include the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 49% solid propenoic acid modified epoxy is added to 51%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.2um, diameter thickness is moderate is taken, silver powder 90%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
As a kind of preferred embodiment of the method for the present invention, sequentially include the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 50% solid propenoic acid modified epoxy is added to 50%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 11.2um, diameter thickness is moderate is taken, silver powder 92%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 6% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
A kind of thin grid low-temperature conductive silver paste of solar energy HIT battery is made using preparation method.
Beneficial effects of the present invention: rationally, each substances in weight percentage ingredient is suitable, and made is thin for preparation method design
The properties such as electric conductivity, viscosity, printing, the pulling force of grid low-temperature conductive silver paste are superior, are able to satisfy solar energy HIT battery silk
Grid requirement is printed, as shown in the table:
Specific embodiment
A specific embodiment of the invention is described further below:
Embodiment one: a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery sequentially includes the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 45%~50% solid propenoic acid modified epoxy is added to
In 50%~55% butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid is modified
After epoxy resin is completely dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, to take average partial size be 1~1.2um, the thick moderate pie silver powder of diameter, by mass percentage silver powder 89%~
92%, step macromolecule epoxy resin carrier 6%~9% poly- 1. obtained is added in high speed disperser, and high speed disperser disperse
To a preliminary uniform carrier, carrier is then poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary load
Body, Blocked Isocyanate Curing Agents 1.6%~1.8%, macromolecule dispersing agent 0.3~0.5% are added to planetary mixer and take out true
Bubble is removed after sky, obtain being uniformly dispersed viscosity 260~330pa.s conductive silver paste slurry；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
Specifically, solid propenoic acid modified epoxy molecular weight is moderate, be conducive to silver powder, butyl acetic acid
Ester, each solvent welding, cure shrinkage is conducive to improve electric conductivity greatly, and because HIT battery is chronically exposed under sunlight
It uses, grid can have excellent anti-aging property by illumination ageing, solid propenoic acid modified epoxy, guarantee grid in light
Stablize according to performance in environment.Butyl acetate solvent is made low viscous for dissolved solid acrylic modified epoxy resin
The macromolecule epoxy resin carrier of degree, macromolecule epoxy resin carrier can soak and dispersible silver powder, guarantees that silver paste is made in the later period
Rheological characteristic and rate of drying meet silk-screen printing requirement.It is 1~1.2um that silver powder, which takes average partial size, and moderate in grain size will not be because excessive
Cause silver paste resistance increase or it is too small be difficult to be uniformly mixed influence printing, and silver powder is the thick moderate pie of diameter, and surface is compared
Smooth, silver powder materials rationally, can be sufficiently mixed with macromolecule epoxy resin carrier.High speed disperser can be partially formed very by force
Turbulent flow, macromolecule epoxy resin carrier, silver powder are uniformly dispersed, and using three-roller can obtain more evenly, it is highly viscous
Carrier.It is unsealed completely at 150 DEG C of Blocked Isocyanate Curing Agents, complies fully with HIT battery process temperature, it is solid to be conducive to silver paste
Change.Macromolecule dispersing agent can prevent the sedimentation and cohesion of silver powder, facilitate silver paste preparation.
Embodiment two: a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, according to the following steps into
Row:
1. preparing macromolecule resin carrier, taking mass percent is that 47% solid propenoic acid modified epoxy is added to 53%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1um, diameter thickness is moderate is taken, silver powder 90%, step are poly- 1. by mass percentage
Macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, and high speed disperser is dispersed to obtain preliminary uniform one
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanic acid by secondary carrier
Ester curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and is uniformly dispersed
Conductive silver paste slurry of the viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
Embodiment three: a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, according to the following steps into
Row:
1. preparing macromolecule resin carrier, taking mass percent is that 46% solid propenoic acid modified epoxy is added to 54%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.1um, diameter thickness is moderate is taken, silver powder 91%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 7% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.65%, macromolecule dispersing agent 0.35% is added to planetary mixer and removes bubble after vacuumizing, and is dispersed
Conductive silver paste slurry of the uniform viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
Embodiment four: a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, according to the following steps into
Row:
1. preparing macromolecule resin carrier, taking mass percent is that 49% solid propenoic acid modified epoxy is added to 51%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.2um, diameter thickness is moderate is taken, silver powder 90%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
Embodiment five: a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, according to the following steps into
Row:
1. preparing macromolecule resin carrier, taking mass percent is that 50% solid propenoic acid modified epoxy is added to 50%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 11.2um, diameter thickness is moderate is taken, silver powder 92%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 6% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
A kind of solar energy HIT battery low-temperature conductive silver paste is made using above-mentioned preparation method.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions, for those of ordinary skill in the art to which the present invention belongs,
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (7)
1. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery, which is characterized in that according to the following steps into
Row:
1. preparing macromolecule resin carrier, taking mass percent is that 45%~50% solid propenoic acid modified epoxy is added to
In 50%~55% butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid is modified
After epoxy resin is completely dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, to take average partial size be 1~1.2um, the thick moderate pie silver powder of diameter, by mass percentage silver powder 89%~
92%, step macromolecule epoxy resin carrier 6%~9% poly- 1. obtained is added in high speed disperser, and high speed disperser disperse
To a preliminary uniform carrier, carrier is then poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary load
Body, Blocked Isocyanate Curing Agents 1.6%~1.8%, macromolecule dispersing agent 0.3~0.5% are added to planetary mixer and take out true
Bubble is removed after sky, obtain being uniformly dispersed viscosity 260~330pa.s conductive silver paste slurry；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
2. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery according to claim 1, feature
It is, the Blocked Isocyanate Curing Agents can unseal completely at 150 DEG C.
3. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery according to claim 1 or 2,
It is characterized in that, sequentially includes the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 47% solid propenoic acid modified epoxy is added to 53%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1um, diameter thickness is moderate is taken, silver powder 90%, step are poly- 1. by mass percentage
Macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, and high speed disperser is dispersed to obtain preliminary uniform one
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanic acid by secondary carrier
Ester curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and is uniformly dispersed
Conductive silver paste slurry of the viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
4. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery according to claim 1 or 2,
It is characterized in that, sequentially includes the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 46% solid propenoic acid modified epoxy is added to 54%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.1um, diameter thickness is moderate is taken, silver powder 91%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 7% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.65%, macromolecule dispersing agent 0.35% is added to planetary mixer and removes bubble after vacuumizing, and is dispersed
Conductive silver paste slurry of the uniform viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
5. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery according to claim 1 or 2,
It is characterized in that, sequentially includes the following steps:
1. preparing macromolecule resin carrier, taking mass percent is that 49% solid propenoic acid modified epoxy is added to 51%
In butyl acetate solvent, constant temperature stirring is carried out after being heated to 80 DEG C, until solid propenoic acid modified epoxy is complete
After fully dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin carrier of low viscosity is obtained；
2. preparing silver paste, the pie silver powder that average partial size is 1.2um, diameter thickness is moderate is taken, silver powder 90%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 8% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
6. a kind of preparation method of the thin grid low-temperature conductive silver paste of solar energy HIT battery according to claim 1 or 2,
It is characterized in that, sequentially includes the following steps: and 1. prepare macromolecule resin carrier, taking mass percent is that 50% solid propenoic acid changes
Property epoxy resin be added in 50% butyl acetate solvent, after being heated to 80 DEG C carry out constant temperature stirring, until solid
After acrylic modified epoxy resin is completely dissolved, with 400 mesh grenadine filtering and impurity removings, the macromolecule epoxy resin for obtaining low viscosity is carried
Body；
2. preparing silver paste, the pie silver powder that average partial size is 11.2um, diameter thickness is moderate is taken, silver powder 92%, step are poly- by mass percentage
1. macromolecule epoxy resin carrier 6% obtained is added in high speed disperser, high speed disperser is dispersed to obtain preliminary uniform
Then carrier is poured into progress grinding distribution in three-roller and obtains secondary carrier, secondary carrier, enclosed type isocyanide by carrier
Acid esters curing agent 1.7%, macromolecule dispersing agent 0.3% is added to planetary mixer and removes bubble after vacuumizing, and it is equal to obtain dispersion
Conductive silver paste slurry of the even viscosity in 260~330pa.s；
3. filter slurry, right using the grenadine filtration step 2. conductive silver paste slurry obtained of mesh number corresponding with printing screen plate
Filtered conductive silver paste slurry is packaged to obtain the thin grid low-temperature conductive silver paste of silk-screen of single component.
7. a kind of thin grid low-temperature conductive silver paste of solar energy HIT battery, which is characterized in that any using the claims 1~6
The preparation method is made.
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| CN114023490A (en) * | 2021-11-03 | 2022-02-08 | 苏州晶银新材料科技有限公司 | Low-temperature conductive silver paste and heterojunction battery |
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Application publication date: 20190412 |