CN103435854A - Organic carrier for crystalline silicon solar cell electrode slurry and preparation method thereof - Google Patents
Organic carrier for crystalline silicon solar cell electrode slurry and preparation method thereof Download PDFInfo
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- CN103435854A CN103435854A CN2013103842454A CN201310384245A CN103435854A CN 103435854 A CN103435854 A CN 103435854A CN 2013103842454 A CN2013103842454 A CN 2013103842454A CN 201310384245 A CN201310384245 A CN 201310384245A CN 103435854 A CN103435854 A CN 103435854A
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Abstract
The invention discloses an organic carrier for crystalline silicon solar cell electrode slurry and a preparation method thereof. The organic carrier comprises the following components by mass percent: 5-20% of organic resin, 60-85% of an organic solvent, 1-10% of a thixotropic agent and 1-10% of a wetting dispersant. The preparation method comprises the following steps: (1) mixing and dissolving the organic resin and the organic solvent to obtain transparent resin solution; and (2) adding the thixotropic agent and the wetting dispersant to the transparent resin solution to mix and activate, so as to obtain the organic carrier for the crystalline silicon solar cell electrode slurry. The organic carrier disclosed by the invention is good in thixotropy, significant in shear thinning effect, high in printing resolution, simple in preparation method and process, convenient to operate and low in cost, and can print a thin electrode grid line with large depth-width ratio.
Description
Technical field
The present invention relates to the crystal silicon solar energy battery field, be specifically related to organic carrier and preparation method thereof for a kind of crystalline silicon solar battery electrode slurry.
Background technology
For crystal silicon solar energy battery, in order to export the electric energy of battery, must on battery, make positive and negative two electrodes.The making method of current commercial crystalline silicon solar battery electrode is difference printed back aluminium paste, back silver slurry and front side silver paste on the silicon chip of making, then by once burning altogether the formation electrode.Back of the body aluminium, back of the body silver and positive silver paste as the indispensable material of crystal silicon solar energy battery metallization operation are the required critical materials of crystal silicon solar energy battery element manufacturing, and the quality of its performance will directly affect the properties of crystal silicon solar energy battery.The complex system that electrode slurry is comprised of conducting powder, inorganic bond phase and three kinds of materials of organic carrier, wherein organic carrier claims again organic binder bond, Main Function is that metal-powder, glass powder inorganic phase are dispersed in wherein, form high viscosity thixotropy paste fluid, there is suitable viscosity and rheological characteristics, can realize silk screen printing.Organic carrier is comprised of solvent, thickening material, thixotropic agent, rheological agent and tensio-active agent etc. usually, should be conducive to the dispersed of inorganic powder, and can remain stable in making, transportation, storage and printing process.
In the crystal silicon solar energy battery metallization process, positive silver paste is after silk screen printing forms anodal pattern, form tight ohmic contact through sintering and Si sheet, play the effect of electric current collection and derivation, but the sun power front electrode is printed on the silicon substrate surface when playing the electrode effect, the sun also to be existed and blocks, in order to reduce because blocking the loss of generation, the general requirement slurry possesses the printing capability of the following fine rule of 70 μ m, makes the grid line printed have better depth-width ratio.For realizing the high thixotropic of slurry, to obtain the electrode pattern of large ratio of height to width, often be added with thixotropic agent in organic carrier, in addition, also often be added with the auxiliary agents such as wetting dispersing agent, tackifier and deaerating agent in organic carrier, final slurry is become and there is certain thixotropic pseudoplastic fluid, and make slurry very fast to low shear history medium viscosity resume speed by high-shear.
Yet, traditional organic carrier is only focused on the mobility of slurry, it is impressionability, and ignored the viscosity recovery situation after slurry shearing desaturation characteristic and shear-thinning, cause the slurry of preparation to have difficulties when the thin gate electrode line of printing large ratio of height to width, thereby the rete printed easily caves in and makes rete broadening, highly decline, and then has increased the shading-area of gate electrode line, has affected efficiency of conversion.Therefore, but need the new material of searching or method to make when guaranteeing the slurry silk-screen, improve the dispersiveness of powder in slurry, improve the thixotropy of slurry and the ability of the thin gate electrode line of printing large ratio of height to width.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide a kind of and make good, the dispersiveness of slurry thixotropy of preparation and storage stability is good, shear shinning successful, viscosity recovery are fast, can print the thin gate electrode line of large ratio of height to width and the high crystalline silicon solar battery electrode slurry organic carrier of printed resolution, the preparation method of a kind of technique crystalline silicon solar battery electrode slurry use organic carrier simple, easy to operate, with low cost also is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is a kind of crystalline silicon solar battery electrode slurry organic carrier, and described organic carrier comprises the component of following massfraction:
Organic resin 5%～20%,
Organic solvent 60%～85%,
Thixotropic agent 1%～10%, and
Wetting dispersing agent 1%～10%.
In above-mentioned organic carrier, preferred, described organic resin comprises one or more in ethyl cellulose, acrylic resin, rosin and derivative thereof, resol.
In above-mentioned organic carrier, preferably, described organic solvent comprises 2,2,4-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate (being alcohol ester 12), epoxidation ready denier oil acid (being the 2-ethylhexyl), hexanodioic acid two [2-(2-butoxy oxyethyl group) ethyl ester], diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetic ester, Terpineol 350, dipropylene glycol methyl ether, propylene glycol monomethyl ether, tributyl citrate, ethylene glycol phenyl ether, dibutyl phthalate, dioctyl phthalate (DOP) and nylon acid dimethyl ester (DBE).
In above-mentioned organic carrier, preferred, described thixotropic agent comprises one or more in hydrogenated castor oil and modifier, polyamide wax and modifier thereof.
In above-mentioned organic carrier, described wetting dispersing agent is anion surfactant and/or nonionogenic tenside, in described wetting dispersing agent tensio-active agent HLB value add and preferably 5～14.
In above-mentioned organic carrier, the preferred N-tallow of described wetting dispersing agent base-1,3-propylene diamine two oleates.
As a total technical conceive, the present invention also provides the preparation method of a kind of crystalline silicon solar battery electrode slurry with organic carrier, comprises the following steps:
(1) dissolving of organic resin: by massfraction, taking 5%～20% organic resin and 60%～85% organic solvent is mixed, then dissolve (being now transparent liquid) fully in 50 ℃～100 ℃ lower heated and stirred to organic resins, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: by massfraction, take 1%～10% thixotropic agent and 1%～10% wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, then under 50 ℃～80 ℃, the gained mixed solution is heated, apply shearing action to mixed solution simultaneously, until the thixotropic agent activation becomes transparent liquid, be cooled to again room temperature (being generally 5 ℃～35 ℃), obtain crystalline silicon solar battery electrode organic carrier (this organic carrier at room temperature is the solid paste) for slurry.
In above-mentioned method, preferred, described organic resin comprises one or more in ethyl cellulose, acrylic resin, rosin and derivative thereof, resol; Described organic solvent comprises 2,2,4-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, epoxidation ready denier oil acid, hexanodioic acid two [2-(2-butoxy oxyethyl group) ethyl ester], diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetic ester, Terpineol 350, dipropylene glycol methyl ether, propylene glycol monomethyl ether, tributyl citrate, ethylene glycol phenyl ether, dibutyl phthalate, dioctyl phthalate (DOP) and nylon acid dimethyl ester (DBE).
In above-mentioned method, preferred, described thixotropic agent comprises one or more in hydrogenated castor oil and modifier, polyamide wax and modifier thereof.
In above-mentioned method, described wetting dispersing agent is anion surfactant and/or nonionogenic tenside, in described wetting dispersing agent tensio-active agent HLB value add and preferably 5～14.
In the present invention, the optimum amount of organic resin can require according to the viscosity of the oil-absorption(number) of conductive powder in electrode slurry and electrode slurry be determined, organic resin mainly plays thickening and improves the elastic effect of slurry.Preferably, organic resin comprises high molecular weight resin and low-molecular-weight resin (generally defining the resin that molecular weight is less than 1W is low-molecular-weight resin) simultaneously, high molecular weight resin can increase viscosity and the visco-elasticity of organic carrier and electrode slurry, but in organic carrier, too much high molecular weight resin easily causes electrode slurry to reel off raw silk from cocoons, affect the silk screen printing performance of electrode slurry, and the resin that adopts two kinds of molecular weight of height carries out reasonably combined being conducive in the raising viscoelastic while of electrode slurry, avoid reeling off raw silk from cocoons, collocation as high-molecular-weight ethyl Mierocrystalline cellulose and low-molecular-weight rosin and derivative thereof.
The activating process of thixotropic agent is relevant with the kind of thixotropic agent, and usually, the activation temperature of hydrogenated castor oil should be controlled at below 50 ℃ and apply moderate shearing action, and the activation temperature of polyamide wax generally is no more than 80 ℃.
Wetting dispersing agent is mainly selected according to the characteristic of silver powder in electrode slurry and glass powder surface hydrophilic, oleophylic.
Compared with prior art, the invention has the advantages that:
(1) organic carrier of the present invention comprises the contour performance composition of low ash organic resin, high boiling solvent, thixotropic agent and wetting dispersing agent of different sorts and molecular weight, can realize the dispersed of conductive powder and unorganic glass powder in this organic carrier; The crystalline silicon solar battery electrode slurry prepared with organic carrier of the present invention has good thixotropy and visco-elasticity, and storage stability is good, and after shear shinning successful and shear-thinning, viscosity recovery is fast, can print the large ratio of height to width fine rule, and printed resolution is high.
(2) organic carrier of the present invention can effectively improve the solid content of electrode slurry when guaranteeing crystalline silicon solar battery electrode slurry silk screen printing performance, improves rheological characteristics and the processing performance of electrode slurry.
(3) in the present invention, preparation method's technique of organic carrier is simple, easy to operate, with low cost, to the design of thixotropic agent and activating process thereof, can make the organic carrier of preparation be effectively applied in the crystalline silicon solar battery electrode slurry.
The accompanying drawing explanation
Fig. 1 is the crystalline silicon solar battery electrode slurry for preparing in the embodiment of the present invention viscosity-speed curves with organic carrier.
Viscosity-shear rate curve that Fig. 2 is crystal silicon solar energy battery anode sizing agent and external certain model anode sizing agent in the embodiment of the present invention 1 and embodiment 2.
Fig. 3 is crystal silicon solar energy battery anode sizing agent and the viscosity-time curve of external certain model anode sizing agent through three sections shearing experiment gained in the embodiment of the present invention 1.
Embodiment
Below in conjunction with Figure of description, with concrete preferred embodiment, the invention will be further described, but protection domain not thereby limiting the invention.
In the specific embodiment of the present invention, one or more in organic resin preferred, ethyl, acrylic resin, rosin and derivative thereof, resol;
Organic solvent preferably 2,2,4-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, epoxidation ready denier oil acid, hexanodioic acid two [2-(2-butoxy oxyethyl group) ethyl ester], diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetic ester, Terpineol 350, dipropylene glycol methyl ether, propylene glycol monomethyl ether, tributyl citrate, ethylene glycol phenyl ether, dibutyl phthalate, dioctyl phthalate (DOP) and nylon acid dimethyl ester;
One or more in the preferred hydrogenated castor oil of thixotropic agent and modifier, polyamide wax and modifier thereof;
Wetting dispersing agent preferred anionic tensio-active agent and/or nonionogenic tenside, the HLB value add and preferably 5～14.
Viscosity described in following examples all refers to apparent viscosity.
embodiment 1:
A kind of crystalline silicon solar battery electrode slurry organic carrier of the present invention, comprise following component: the 1.04g organic resin, 9.07g organic solvent, 0.5g thixotropic agent and 0.5g wetting dispersing agent, wherein, organic resin is by 0.187g ethyl cellulose 200, 0.053g ethyl cellulose 300 and 0.8g acrylic resin NeoCryl B-723 form, organic solvent is by 5.57g alcohol ester 12 (2, 2, 4-trimethylammonium-1, the 3-pentanediol mono isobutyrate) and 3.5g nylon acid dimethyl ester (DBE) form, thixotropic agent is 0.5g polyamide wax MT ST, wetting dispersing agent is 0.5g N-tallow base-1, 3-propylene diamine two oleates, the HLB value is 12.
The preparation method of organic carrier for a kind of crystalline silicon solar battery electrode slurry of the invention described above comprises the following steps:
(1) dissolving of organic resin: take 0.187g ethyl cellulose 200,0.053g ethyl cellulose 300 and 0.8g acrylic resin NeoCryl B-723 as the organic resin composition, 5.57g alcohol ester 12 and 3.5g DBE are as organic solvent, organic resin and organic solvent are added in the heatable container with shearing action and mix, dissolve fully and become transparent liquid to organic resin in 90 ℃ of lower heated and stirred 2h, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: take 0.5g polyamide wax MT ST as thixotropic agent, 0.5g N-tallow base-1, 3-propylene diamine two oleates are as wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, the gained mixed solution is heated, heating and temperature control is at 60 ℃, apply the shearing action of medium tenacity (rotating speed is 1000rpm) to mixed solution simultaneously, maintain shearing action 30min, until the thixotropic agent activation becomes transparent liquid fully, be cooled to again room temperature, obtain the crystalline silicon solar battery electrode slurry organic carrier of faint yellow paste.
Organic carrier prepared by above-mentioned the present embodiment is measured apparent viscosity under the temperature of 25 ℃, different rotating speed, apparent viscosity adopts the test of Brookfield HBDV-II type viscometer, used is SC4-14/6R sample test rotor-support-foundation system in a small amount, and the viscosity-speed curves obtained as shown in Figure 1.As seen from the figure, this organic carrier is the pseudoplastic fluid with obvious shear shinning characteristic, and under 1rpm and 10rpm rotating speed, viscosity is respectively 590Pas and 120Pas.
The organic carrier that adopts above-mentioned the present embodiment to prepare prepares the crystal silicon solar energy battery anode sizing agent, wherein the quality of organic carrier is 9.3g, the quality of silver powder is 88.2g, the quality of glass powder is 2.5g, respectively glass powder and silver powder are added in organic carrier, after stirring, utilize the shearing action of three-roller that the reunion powder is pulled open, obtain the crystal silicon solar energy battery anode sizing agent that fineness is less than 10 μ m.
Utilize the Anton Paar rheometer to be characterized the rheological property of above-mentioned crystal silicon solar energy battery anode sizing agent, viscosity-the shear rate curve of the crystal silicon solar energy battery anode sizing agent obtained as shown in Figure 2, as seen from the figure, crystalline silicon solar battery electrode slurry viscosity-the shear rate curve that adopts this organic carrier to prepare forms by three sections, when shearing rate is less than 0.1S
-1the time, slurry viscosity is less with the shear rate change amplitude, slurry viscosity with shear rate change at 0.1～1S
-1the interval platform that exists, the continuation along with shearing rate after platform area increases, and slurry viscosity is linear the reduction by a relatively large margin.Adopt the test of Brookfield HBDV-II type viscometer to learn, the apparent viscosity of above-mentioned crystal silicon solar energy battery anode sizing agent under 10rpm is 229Pas.Viscosity-the shear rate curve of external certain model anode sizing agent as shown in Figure 2, anode sizing agent viscosity prepared by the present embodiment-shear rate curve shape is similar to external anode sizing agent, but viscosity is a little more than external anode sizing agent, and anode sizing agent prepared by the present embodiment is at 0.4S
-1and 4S
-1under viscosity be respectively 2380Pas and 284Pas, external anode sizing agent is respectively 1760Pas and 213Pas.
Above-mentioned crystal silicon solar energy battery anode sizing agent is carried out to three sections shearing experiments (3ITT), and its testing method is for respectively at 1s
-1, 500s
-1and 1s
-1the viscosity of lower continuously tested anode sizing agent, observe anode sizing agent through 500s
-1the recovery situation of viscosity after high-shear, the viscosity-time curve obtained as shown in Figure 3, as seen from the figure, above-mentioned crystal silicon solar energy battery anode sizing agent after high-shear in 1s the viscosity recovery degree be the 3rd section 1S of 22.6%(
-1the viscosity number of first point is divided by first paragraph 1S
-1the viscosity average of lower last five points).Viscosity-the time curve of external anode sizing agent (identical with aforesaid external anode sizing agent model) as shown in Figure 3, the relatively external anode sizing agent of anode sizing agent prepared by the present embodiment has viscosity recovery speed faster after high shear forces, and this structure fast or viscosity recovery speed are conducive to the acquisition of silk screen printing large ratio of height to width fine rule.
In addition, known after testing, the fineness of crystal silicon solar energy battery anode sizing agent prepared by above-mentioned the present embodiment<10 μ m, storage stability > 6 months, printed resolution is 50 μ m.
embodiment 2:
A kind of crystalline silicon solar battery electrode slurry organic carrier of the present invention, comprise following component: 2.86g organic resin, 15.103g organic solvent, 1.0g thixotropic agent and 0.5g wetting dispersing agent, wherein, organic resin is comprised of 0.28g ethyl cellulose 200,0.08g ethyl cellulose 300 and 2.5g acrylic resin NeoCryl B-842, organic solvent is comprised of 8.355g alcohol ester 12 and 6.748g DBE, thixotropic agent is 1.0g polyamide wax MT ST, wetting dispersing agent is 0.5g N-tallow base-1,3-propylene diamine two oleates, the HLB value is 12.
The preparation method of organic carrier for a kind of crystalline silicon solar battery electrode slurry of the invention described above comprises the following steps:
(1) dissolving of organic resin: take 0.28g ethyl cellulose 200,0.08g ethyl cellulose 300 and 2.5g acrylic resin NeoCryl B-842 as the organic resin composition, 8.355g alcohol ester 12 and 6.748g DBE are as organic solvent, organic resin and organic solvent are added in the heatable container with shearing action and mix, dissolve fully and become transparent liquid to organic resin in 90 ℃ of lower heated and stirred 2h, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: take 1.0g polyamide wax MT ST as thixotropic agent, 0.5g N-tallow base-1, 3-propylene diamine two oleates are as wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, the gained mixed solution is heated, heating and temperature control is at 60 ℃, apply the shearing action of medium tenacity (1000rpm) to mixed solution simultaneously, maintain shearing action 30min, until the thixotropic agent activation becomes transparent liquid fully, be cooled to again room temperature, obtain the crystalline silicon solar battery electrode slurry organic carrier of faint yellow paste.
Organic carrier prepared by above-mentioned the present embodiment is measured apparent viscosity under the temperature of 25 ℃, different rotating speed, and the viscosity-speed curves obtained as shown in Figure 1.As seen from the figure, this organic carrier is the pseudoplastic fluid with obvious shear shinning characteristic, and under 1rpm and 10rpm rotating speed, viscosity is respectively 300Pas and 84Pas.
The organic carrier that adopts above-mentioned the present embodiment to prepare prepares the crystal silicon solar energy battery anode sizing agent, wherein the quality of organic carrier is 9.3g, the quality of silver powder is 88.2g, the quality of glass powder is 2.5g, respectively glass powder and silver powder are added in organic carrier, after stirring, utilize the shearing action of three-roller that the reunion powder is pulled open, obtain the crystal silicon solar energy battery anode sizing agent.
Utilize the Anton Paar rheometer to be characterized the rheological property of above-mentioned crystal silicon solar energy battery anode sizing agent, viscosity-the shear rate curve of the crystal silicon solar energy battery anode sizing agent obtained as shown in Figure 2, as seen from the figure, anode sizing agent viscosity prepared by the present embodiment-shear rate curve shape is similar to external anode sizing agent, viscosity is basic suitable with external anode sizing agent, and the anode sizing agent of preparation is at 0.4S
-1and 4S
-1under viscosity be respectively 2260Pas and 236Pas, external anode sizing agent is respectively 1760Pas and 213Pas.Learn after tested, the apparent viscosity of crystal silicon solar energy battery anode sizing agent under 10rpm prepared by above-mentioned the present embodiment is 210Pas.
Known after testing, above-mentioned crystal silicon solar energy battery anode sizing agent after high-shear in 1s the viscosity recovery degree be 20.9%, fineness<10 μ m, storage stability > 6 months, printed resolution is 50 μ m.
embodiment 3:
A kind of crystalline silicon solar battery electrode slurry organic carrier of the present invention, comprise following component: 2.86g organic resin, 17.488g organic solvent, 1.0g thixotropic agent and 0.5g wetting dispersing agent, wherein, organic resin is comprised of 0.28g ethyl cellulose 200,0.08g ethyl cellulose 300 and 2.5g acrylic resin NeoCryl B-805, organic solvent is comprised of 10.74g alcohol ester 12 and 6.748g DBE, thixotropic agent is 1.0g polyamide wax MT ST, wetting dispersing agent is 0.5g N-tallow base-1,3-propylene diamine two oleates, the HLB value is 12.
The preparation method of organic carrier for a kind of crystalline silicon solar battery electrode slurry of the invention described above comprises the following steps:
(1) dissolving of organic resin: take 0.28g ethyl cellulose 200,0.08g ethyl cellulose 300 and 2.5g acrylic resin NeoCryl B-805 as the organic resin composition, 10.74g alcohol ester 12 and 6.748g DBE are as organic solvent, organic resin and organic solvent are added in the heatable container with shearing action and mix, dissolve fully and become transparent liquid to organic resin in 90 ℃ of lower heated and stirred 2h, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: take 1.0g polyamide wax MT ST as thixotropic agent, 0.5g N-tallow base-1, 3-propylene diamine two oleates are as wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, the gained mixed solution is heated, heating and temperature control is at 60 ℃, apply the shearing action of medium tenacity (1000rpm) to mixed solution simultaneously, maintain shearing action 30min, until the thixotropic agent activation becomes transparent liquid fully, be cooled to again room temperature, obtain the crystalline silicon solar battery electrode slurry organic carrier of faint yellow paste.
Organic carrier prepared by above-mentioned the present embodiment is measured apparent viscosity under the temperature of 25 ℃, different rotating speed, and the viscosity-speed curves obtained as shown in Figure 1.As seen from the figure, this organic carrier is the pseudoplastic fluid with obvious shear shinning characteristic, and under 1rpm and 10rpm rotating speed, viscosity is respectively 680Pas and 58Pas.
The organic carrier that adopts above-mentioned the present embodiment to prepare prepares the crystal silicon solar energy battery anode sizing agent, wherein the quality of organic carrier is 9.3g, the quality of silver powder is 88.2g, the quality of glass powder is 2.5g, respectively glass powder and silver powder are added in organic carrier, after stirring, utilize the shearing action of three-roller that the reunion powder is pulled open, obtain the crystal silicon solar energy battery anode sizing agent.
Known after testing, apparent viscosity under the 10rpm that above-mentioned crystal silicon solar energy battery anode sizing agent adopts the test of Brookfield HBDV-II type viscometer to obtain is 259Pas, after high-shear, in 1s, the viscosity recovery degree is 27.1%, fineness<10 μ m, storage stability > 6 months, printed resolution is 50 μ m.
embodiment 4:
A kind of crystalline silicon solar battery electrode slurry organic carrier of the present invention, comprise following component: 3.5g organic resin, 18.14g organic solvent, 1.0g thixotropic agent and 1.0g wetting dispersing agent, wherein, organic resin is comprised of 1.0g ethyl cellulose 200 and 2.5g pentalyn, organic solvent is comprised of 11.14g alcohol ester 12 and 7.0g DBE, and thixotropic agent is the 1.0g hydrogenated castor oil, and wetting dispersing agent is 1.0g N-tallow base-1,3-propylene diamine two oleates, the HLB value is 12.
The preparation method of organic carrier for a kind of crystalline silicon solar battery electrode slurry of the invention described above comprises the following steps:
(1) dissolving of organic resin: take 1.0g ethyl cellulose 200 and 2.5g pentalyn as the organic resin composition, 11.14g alcohol ester 12 and 7.0g DBE are as organic solvent, organic resin and organic solvent are added in the heatable container with shearing action, dissolve fully and become transparent liquid to organic resin in 90 ℃ of lower heated and stirred 2h, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: take the 1.0g hydrogenated castor oil as thixotropic agent, 1.0g N-tallow base-1, 3-propylene diamine two oleates are as wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, mix, the gained mixed solution is heated, heating and temperature control is at 50 ℃, apply the shearing action of medium tenacity (1000rpm) to mixed solution simultaneously, maintain shearing action 40min, until the thixotropic agent activation becomes transparent liquid fully, be cooled to again room temperature, obtain the crystalline silicon solar battery electrode slurry organic carrier of faint yellow paste.
Organic carrier prepared by above-mentioned the present embodiment is measured apparent viscosity under the temperature of 25 ℃, different rotating speed, and the viscosity-speed curves obtained as shown in Figure 1.As seen from the figure, this organic carrier is also the pseudoplastic fluid with obvious shear shinning characteristic, and under 1rpm and 10rpm rotating speed, viscosity is respectively 360Pas and 45Pas.
The organic carrier that adopts above-mentioned the present embodiment to prepare prepares the crystal silicon solar energy battery anode sizing agent, wherein the quality of organic carrier is 9.3g, the quality of silver powder is 88.2g, the quality of glass powder is 2.5g, respectively glass powder and silver powder are added in organic carrier, after stirring, utilize the shearing action of three-roller that the reunion powder is pulled open, obtain the crystal silicon solar energy battery anode sizing agent.
Known after testing, the apparent viscosity that above-mentioned crystal silicon solar energy battery anode sizing agent adopts the test of Brookfield HBDV-II type viscometer to obtain under 10rpm is 254Pas), after high-shear, in 1s, the viscosity recovery degree is 25.5%, fineness<10 μ m, storage stability > 6 months, printed resolution is 50 μ m.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention also not only is confined to above-described embodiment.All technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.Be noted that for those skilled in the art, improvements and modifications under the premise without departing from the principles of the invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a crystalline silicon solar battery electrode slurry organic carrier, is characterized in that, described organic carrier comprises the component of following massfraction:
Organic resin 5%～20%,
Organic solvent 60%～85%,
Thixotropic agent 1%～10%, and
Wetting dispersing agent 1%～10%.
2. crystalline silicon solar battery electrode slurry organic carrier according to claim 1, is characterized in that, described organic resin comprises one or more in ethyl cellulose, acrylic resin, rosin and derivative thereof, resol.
3. crystalline silicon solar battery electrode slurry organic carrier according to claim 1, it is characterized in that, described organic solvent comprises 2,2,4-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, epoxidation ready denier oil acid, hexanodioic acid two [2-(2-butoxy oxyethyl group) ethyl ester], diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetic ester, Terpineol 350, dipropylene glycol methyl ether, propylene glycol monomethyl ether, tributyl citrate, ethylene glycol phenyl ether, dibutyl phthalate, dioctyl phthalate (DOP) and nylon acid dimethyl ester.
4. crystalline silicon solar battery electrode slurry organic carrier according to claim 1, is characterized in that, described thixotropic agent comprises one or more in hydrogenated castor oil and modifier, polyamide wax and modifier thereof.
5. crystalline silicon solar battery electrode slurry organic carrier according to claim 1, it is characterized in that, described wetting dispersing agent is anion surfactant and/or nonionogenic tenside, and in described wetting dispersing agent, tensio-active agent HLB value adds and be 5～14.
6. crystalline silicon solar battery electrode slurry organic carrier according to claim 5, is characterized in that, described wetting dispersing agent is N-tallow base-1,3-propylene diamine two oleates.
7. the preparation method of organic carrier for a crystalline silicon solar battery electrode slurry comprises the following steps:
(1) dissolving of organic resin: by massfraction, taking 5%～20% organic resin and 60%～85% organic solvent is mixed, then dissolve fully in 50 ℃～100 ℃ lower heated and stirred to organic resins, then be cooled to room temperature, obtain transparent resin solution;
(2) activation of thixotropic agent: by massfraction, take 1%～10% thixotropic agent and 1%～10% wetting dispersing agent, in the transparent resin solution that adds step (1) to obtain thixotropic agent and wetting dispersing agent, then under 50 ℃～80 ℃, the gained mixed solution is heated, apply shearing action to mixed solution simultaneously, until the thixotropic agent activation becomes transparent liquid, then is cooled to room temperature, obtain crystalline silicon solar battery electrode slurry organic carrier.
8. preparation method according to claim 7, is characterized in that, described organic resin comprises one or more in ethyl cellulose, acrylic resin, rosin and derivative thereof, resol; Described organic solvent comprises 2,2,4-trimethylammonium-1, one or more in 3-pentanediol mono isobutyrate, epoxidation ready denier oil acid, hexanodioic acid two [2-(2-butoxy oxyethyl group) ethyl ester], diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetic ester, Terpineol 350, dipropylene glycol methyl ether, propylene glycol monomethyl ether, tributyl citrate, ethylene glycol phenyl ether, dibutyl phthalate, dioctyl phthalate (DOP) and nylon acid dimethyl ester.
9. preparation method according to claim 7, is characterized in that, described thixotropic agent comprises one or more in hydrogenated castor oil and modifier, polyamide wax and modifier thereof.
10. preparation method according to claim 7, is characterized in that, described wetting dispersing agent is anion surfactant and/or nonionogenic tenside, and in described wetting dispersing agent, tensio-active agent HLB value adds and be 5～14.
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| CN104485153A (en) * | 2014-11-27 | 2015-04-01 | 江苏泓源光电科技股份有限公司 | Front silver paste with good thixotropy and preparation method of front silver paste |
| CN106018174A (en) * | 2016-05-23 | 2016-10-12 | 无锡帝科电子材料科技有限公司 | Testing method for viscosity of organic carrier for photovoltaic front silver paste |
| CN106205771A (en) * | 2016-06-30 | 2016-12-07 | 金陵科技学院 | A kind of preparation method of oxidation resistant copper conductor slurry |
| CN106397840A (en) * | 2016-08-31 | 2017-02-15 | 安徽斯迈尔电子科技有限公司 | Method for preparing organic carrier in resistance paste |
| CN106928605A (en) * | 2017-02-20 | 2017-07-07 | 江苏瑞德新能源科技有限公司 | A kind of organic carrier for solar cell positive silver paste and preparation method thereof |
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| CN109897389A (en) * | 2017-12-07 | 2019-06-18 | 上海太阳能工程技术研究中心有限公司 | A kind of crystal silicon solar batteries front side silver paste organic carrier and preparation method |
| CN110246606A (en) * | 2019-06-21 | 2019-09-17 | 广州市儒兴科技开发有限公司 | The electrocondution slurry that a kind of high-performance organic carrier and preparation method thereof is applied with it |
| CN111462940A (en) * | 2019-01-22 | 2020-07-28 | 三星Sdi株式会社 | Composition for forming solar cell electrode, electrode and solar cell |
| CN112133468A (en) * | 2019-06-25 | 2020-12-25 | 凯锶科技股份有限公司 | Anti-oxidation conductive copper paste and manufacturing method and application thereof |
| CN112525771A (en) * | 2020-11-30 | 2021-03-19 | 湖北亿纬动力有限公司 | Battery slurry storage performance evaluation method |
| CN112831225A (en) * | 2020-12-31 | 2021-05-25 | 北京元六鸿远电子科技股份有限公司 | Electrode slurry end-capping pretreatment liquid, preparation method and use method |
| CN112967833A (en) * | 2021-02-04 | 2021-06-15 | 上海日御新材料科技有限公司 | Organic carrier for solar cell electrode slurry and preparation method thereof |
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| CN104485153A (en) * | 2014-11-27 | 2015-04-01 | 江苏泓源光电科技股份有限公司 | Front silver paste with good thixotropy and preparation method of front silver paste |
| CN106018174A (en) * | 2016-05-23 | 2016-10-12 | 无锡帝科电子材料科技有限公司 | Testing method for viscosity of organic carrier for photovoltaic front silver paste |
| CN106205771A (en) * | 2016-06-30 | 2016-12-07 | 金陵科技学院 | A kind of preparation method of oxidation resistant copper conductor slurry |
| CN106205771B (en) * | 2016-06-30 | 2018-05-15 | 金陵科技学院 | A kind of preparation method of oxidation resistant copper conductor slurry |
| CN107778764A (en) * | 2016-08-26 | 2018-03-09 | 湖南利德电子浆料股份有限公司 | A kind of solar cell size organic carrier and preparation method thereof |
| CN106397840A (en) * | 2016-08-31 | 2017-02-15 | 安徽斯迈尔电子科技有限公司 | Method for preparing organic carrier in resistance paste |
| CN106928605A (en) * | 2017-02-20 | 2017-07-07 | 江苏瑞德新能源科技有限公司 | A kind of organic carrier for solar cell positive silver paste and preparation method thereof |
| CN109897389A (en) * | 2017-12-07 | 2019-06-18 | 上海太阳能工程技术研究中心有限公司 | A kind of crystal silicon solar batteries front side silver paste organic carrier and preparation method |
| CN108504051A (en) * | 2018-02-28 | 2018-09-07 | 江苏国瓷泓源光电科技有限公司 | A kind of organic carrier and preparation method for silicon solar cell positive silver paste |
| CN108735337A (en) * | 2018-04-18 | 2018-11-02 | 湖南省国银新材料有限公司 | A kind of conductive silver paste and preparation method thereof |
| CN111462940A (en) * | 2019-01-22 | 2020-07-28 | 三星Sdi株式会社 | Composition for forming solar cell electrode, electrode and solar cell |
| CN110246606A (en) * | 2019-06-21 | 2019-09-17 | 广州市儒兴科技开发有限公司 | The electrocondution slurry that a kind of high-performance organic carrier and preparation method thereof is applied with it |
| CN112133468A (en) * | 2019-06-25 | 2020-12-25 | 凯锶科技股份有限公司 | Anti-oxidation conductive copper paste and manufacturing method and application thereof |
| CN112525771A (en) * | 2020-11-30 | 2021-03-19 | 湖北亿纬动力有限公司 | Battery slurry storage performance evaluation method |
| CN112831225A (en) * | 2020-12-31 | 2021-05-25 | 北京元六鸿远电子科技股份有限公司 | Electrode slurry end-capping pretreatment liquid, preparation method and use method |
| CN112831225B (en) * | 2020-12-31 | 2022-05-06 | 北京元六鸿远电子科技股份有限公司 | Electrode slurry end-capping pretreatment liquid, preparation method and use method |
| CN112967833A (en) * | 2021-02-04 | 2021-06-15 | 上海日御新材料科技有限公司 | Organic carrier for solar cell electrode slurry and preparation method thereof |
| CN114038610A (en) * | 2022-01-10 | 2022-02-11 | 南通俊丰新材料科技有限公司 | Organic carrier for battery silicon wafer metallization process and preparation method thereof |
| CN114038610B (en) * | 2022-01-10 | 2022-03-29 | 南通俊丰新材料科技有限公司 | Organic carrier for battery silicon wafer metallization process and preparation method thereof |
| CN114334217A (en) * | 2022-03-17 | 2022-04-12 | 西安宏星电子浆料科技股份有限公司 | Fine line printing type conductor paste |
| CN114334217B (en) * | 2022-03-17 | 2022-05-27 | 西安宏星电子浆料科技股份有限公司 | Fine line printing type conductor paste |
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