CN104987672A - Conductive slurry for solar cell encapsulation, preparation method therefor and application thereof - Google Patents
Conductive slurry for solar cell encapsulation, preparation method therefor and application thereof Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to conductive slurry for solar cell encapsulation, a preparation method therefor and an application thereof. The conductive slurry consists of the following components in parts by weight: 5-10 parts of bismaleimide, 5-8 parts of matrix resin, 1-2 parts of an epoxy diluent, 2-5 parts of a dispersing agent, 5-10 parts of modified nano-silver-supported flaky graphene, 1-2 parts of a curing agent, 0.2-0.5 part of a curing accelerator, 65-75 parts of modified micronized silver powder, 1-2 parts of a coupling agent and 0.2-0.5 part of an anti-oxidant. The conductive slurry disclosed by the invention can be improved in thermal conductivity, electrical conductivity, oxidation resistance, mechanical property and temperature resistance by utilizing the modified nano-silver-supported flaky graphene, and is beneficial for dispersion after being functionalized, so that the dosage of the conductive slurry is reduced. The dispersion is improved by utilizing the modified nano-sliver, the dosage of silver powder is reduced, the oxidization resistance is increased, and the mechanical strength is increased. The matrix resin is mixed with the bismaleimide, the epoxy diluent butanediol diglycidyl ether and the dispersing agent, so that the temperature resistance is improved in a facilitated mode.
Description
Technical field
The present invention relates to a kind of electrocondution slurry used for encapsulation of solar battery and preparation method thereof and application.
Background technology
The utilization of sun power is the effective means realizing energy utilization structural transformation, and the use of solar cell is then the important channel effectively utilizing sun power.The method promoting solar battery efficiency is also diversified, while effectively improving internal quantum efficiency, by reasonably encapsulating the raising that also can realize battery external quantum efficiency, also can reduce the cost of solar cell simultaneously.The encapsulation of the encapsulation of solar cell, especially thin film solar cell requires low temperature bonding, and in addition, the solar cell of some types, by front electrode and the material of back electrode and the restriction of thickness, can not use traditional solder in packaging process.
Electrocondution slurry as a kind of substitute of conventional alloys solder, because of its have environmental friendliness, solidification value low, can silk screen printing and the advantage such as technique is simple and cause the extensive concern of industry and researcher.But solidification value is high, set time is long, heat conductivility is poor deficiency that existing conductive resin exists.
Summary of the invention
The object of the invention is to solve problems of the prior art, and propose a kind of electrocondution slurry used for encapsulation of solar battery and preparation method thereof and application.
In order to solve above technical problem, technical scheme of the present invention is:
A kind of electrocondution slurry used for encapsulation of solar battery, be made up of the component of following weight part: bismaleimides 5-10 part, matrix resin 5-8 part, epoxide diluent 1-2 part, dispersion agent 2-5 part, flaky graphite alkene 5-10 part of the loading nano silvery of modification, solidifying agent 1-2 part, curing catalyst 0.2-0.5 part, micro-silver powder 65-75 part of modification, coupling agent 1-2 part, oxidation inhibitor 0.2-0.5 part.
Preferably, described electrocondution slurry is made up of the component of following weight part: bismaleimides 7 parts, matrix resin 6 parts, epoxide diluent 2 parts, dispersion agent 3 parts, 8 parts, the flaky graphite alkene of the loading nano silvery of modification, 1 part, solidifying agent, curing catalyst 0.3 part, the micro-silver powder of modification 70 parts, coupling agent 2 parts, 0.4 part, oxidation inhibitor.
Prove through test, the performances such as the thermal conductivity of the electrocondution slurry of this formula, electroconductibility, antioxidant property, mechanical property and temperature tolerance are all best.
Preferably, described matrix resin is made up of the component of following weight part: two Maleimide 20-30 part, bisphenol A type epoxy resin 35-45 part, epoxide diluent 5-15 part, dispersion agent 15-25 part.
Wherein, two Maleimide be imide extend two Maleimides, this matrix resin contribute to raising electrocondution slurry temperature tolerance, effectively prevent solar cell power larger time, the electrocondution slurry melted by heat that battery temperature is higher to be caused or distortion, cause the generation of hazardous condition.
Preferably, described solidifying agent is trimethylhexamethylenediamine.Trimethylhexamethylenediamine is nontoxic and set time is short, can not cause murder by poisoning while substantially increasing the packaging efficiency of solar cell to staff.
Preferably, described curing catalyst is 2,4,6-tri-(dimethylamino methyl) phenol.2,4,6-tri-(dimethylamino methyl) phenol is high temperature resistant, solidifying agent can be impelled to solidify completely at short notice, suitably can also improve cohesive strength.
Preferably, described micro-silver powder is amino-acid modified micro-silver powder.The micro-silver powder of modification improves the dispersiveness of silver powder, reduces the usage quantity of silver powder, adds the oxidation-resistance of electrocondution slurry, and adds the physical strength after electrocondution slurry solidification, has very large contribution to the raising of electrocondution slurry overall performance.
Preferably, described dispersion agent is stearylamide, and described coupling agent is γ-aminopropyl triethoxysilane, and described oxidation inhibitor is 2,5-ditert-butylhydro quinone.Stearylamide is nontoxic and high temperature resistant, can improve the resistance to elevated temperatures of electrocondution slurry, and can improve the dispersiveness of each component of electrocondution slurry, and slurry is disperseed more even, character is more homogeneous.
Preferably, described modified load has the flaky graphite alkene of nanometer silver to be that load has the flaky graphite alkene of nanometer silver to carry out non covalent bond modification.The load that non covalent bond is modified has the flaky graphite alkene of nanometer silver effectively can improve the thermal conductivity of electrocondution slurry, electroconductibility, antioxidant property, mechanical property and temperature tolerance, contribute to being uniformly dispersed in electrocondution slurry, reduce usage quantity, reach the effect of saving.
A preparation method for electrocondution slurry used for encapsulation of solar battery, comprises step following rapid:
1) by bismaleimides 5-10 part, matrix resin 5-8 part, epoxide diluent epoxide diluent 1-2 part and the mixing of dispersion agent 4-4.5 part;
2) modification is carried out to micro-silver powder amino acid;
3) the flaky graphite alkene of loading nano silvery is carried out to the modification of non covalent bond modification;
4) by solidifying agent 1-2 part, curing catalyst 0.2-0.5 part and the mixing of dispersion agent 0.5-1 part;
5) micro-silver powder 65-75 part that step (2) obtains is joined in mixture (1);
6) mixture that step (3) obtains is joined in (5);
7) mixture that step (4) obtains is joined in (6);
8) coupling agent 1-2 part is joined in (7);
9) oxidation inhibitor 0.2-0.5 part is joined in (8), stir, mix, required conductive silver paste can be obtained.
Preferably, step 1) in, the temperature of mixing is 15-30 DEG C.This mixing is not high to temperature requirement, mixes under normal temperature, as long as mix, can make easy control of process conditions like this, easily operate.
Preferably, step 2) in, described amino acid is arginine.Arginine carries out modification to micro-silver powder, can strengthen the performance of micro-silver powder better.
Preferably, step 3) in, the flaky graphite alkene of loading nano silvery is carried out to the method for non covalent bond modification, the flaky graphite alkene of loading nano silvery is comprised the steps: to join in the acetone soln of 1-pyrene butyric acid, 20-30 DEG C of ultrasonic 12h, obtains the flaky graphite alkene of the loading nano silvery of non-covalent modification.Contribute to the dispersion of Graphene like this.
Preferred further, the concentration of the acetone soln of described 1-pyrene butyric acid is 5-10mg/mL.Under this concentration, the better effects if that non covalent bond is modified, can improve the various performances of Graphene better.
Preferred further, the quality of the flaky graphite alkene of the acetone soln process loading nano silvery of every milliliter of 1-pyrene butyric acid is 0.1-0.5mg.This proportioning can make graphene modified complete, the waste acetone soln consumption of 1-pyrene butyric acid can being avoided too much to cause on the other hand.
Preferably, step 4) in, the temperature of mixing is 15-30 DEG C.This mixing is not high to temperature requirement, mixes under normal temperature, as long as mix, can make easy control of process conditions like this, easily operate.
Described electrocondution slurry is making the application in electrode.
The application in the printed circuit boards of described electrocondution slurry.
The invention has the beneficial effects as follows:
1, the flaky graphite alkene that electrocondution slurry of the present invention make use of the loading nano silvery of modification can improve thermal conductivity, electroconductibility, antioxidant property, the performance such as mechanical property and temperature tolerance of electrocondution slurry, the dispersiveness of Graphene in electrocondution slurry is contributed to after functionalization, make it disperse more even, and reduce usage quantity.
2, electrocondution slurry of the present invention make use of the dispersiveness of the micro-silver powder raising micro-silver powder of modification, reduces the usage quantity of silver powder, adds the oxidation-resistance of electrocondution slurry, also enhance the physical strength after electrocondution slurry solidification simultaneously.
3, the mixture of the matrix resin of the present invention two Maleimides, bisphenol A type epoxy resin (E20 type), epoxide diluent butanediol diglycidyl ether and the dispersion agent that adopt imide to extend, contribute to the high thermal resistance improving electrocondution slurry, the harm that the fusing of the electrocondution slurry after the solidification preventing high temperature to bring or distortion etc. bring.
4, solidifying agent of the present invention adopts trimethylhexamethylenediamine, and this material is nontoxic and set time is short, can not produce murder by poisoning to staff, greatly can also improve the working efficiency of staff; Curing catalyst adopts 2,4,6-tri-(dimethylamino methyl) phenol high temperature resistant; Dispersion agent adopts stearylamide nontoxic and high temperature resistant.These materials are high temperature resistant, can not at high temperature decompose, and ensure that the stability of conduction slurries, and conduction slurries can also be made to disperse more even, character is more homogeneous.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A kind of electrocondution slurry used for encapsulation of solar battery, be made up of the component of following weight part: bismaleimides 5 parts, matrix resin 8 parts, epoxide diluent 1 part, dispersion agent (stearylamide) 2 parts, 10 parts, the flaky graphite alkene of the loading nano silvery of modification, 1 part, solidifying agent (trimethylhexamethylenediamine), curing catalyst (2, 4, 6-tri-(dimethylamino methyl) phenol) 0.5 part, the micro-silver powder of modification 70 parts, coupling agent (γ-aminopropyl triethoxysilane) 1.5 parts, oxidation inhibitor (2, 5-ditert-butylhydro quinone) 0.5 part.
Matrix resin is made up of the component of following weight part: two Maleimide 25 parts, bisphenol A type epoxy resin 45 parts, epoxide diluent 10 parts, dispersion agent 20 parts.
The preparation method of described electrocondution slurry, comprises the steps:
(1) the two Maleimides 5 parts imide extended, matrix resin 8 parts, butanediol diglycidyl ether 1 part and stearylamide 1.5 parts mixing;
(2) join in the arginic aqueous solution by conductive submicron silver powder, carry out stirring 30 minutes, mix, and then carry out centrifugal, washing, dry successively, obtain the micro-silver powder of arginine modification, the consumption of silver powder is 75 parts.
(3) joined by the flaky graphite alkene of loading nano silvery in the acetone soln of 5mg/mL 1-pyrene butyric acid, 30 DEG C of ultrasonic 12h hour, form the Graphene of non-covalent modification, consumption is 10 parts.
(4) trimethylhexamethylenediamine 1 part, 2,4,6-tri-(dimethylamino methyl) phenol 0.5 part and stearylamide 0.5 part are at room temperature mixed.
(5) mixture that step (2) obtains is joined in (1).
(6) mixture that step (3) obtains is joined in (5).
(7) mixture that step (4) obtains is joined in (6)
(8) γ-aminopropyl triethoxysilane 1.5 parts is joined in (7).
(9) 2,5-ditert-butylhydro quinone 0.5 part is joined in (8), at room temperature stir, ultrasonicly to mix, required conductive silver paste can be obtained.
Solidification in 40 minutes at 60 DEG C, at 150 DEG C, in 2 hours, retention is constant.
Application:
When making electrode, electrocondution slurry being replaced soldering, can obviously simplify the operation, further reducing the danger of operation.
The application in the printed circuit boards of described electrocondution slurry, connects with conductive silver paste between the wire of circuit card, makes the circuit card of making more accurate.
Embodiment 2
A kind of electrocondution slurry used for encapsulation of solar battery, be made up of the component of following weight part: bismaleimides 10 parts, matrix resin 5 parts, epoxide diluent 2 parts, dispersion agent (stearylamide) 5 parts, 5 parts, the flaky graphite alkene of the loading nano silvery of modification, 1 part, solidifying agent, curing catalyst 0.2 part, the micro-silver powder of modification 65 parts, coupling agent 1 part, 0.2 part, oxidation inhibitor.
Matrix resin is made up of the component of following weight part: two Maleimide 20 parts, bisphenol A type epoxy resin 35 parts, epoxide diluent 5 parts, dispersion agent 15 parts.
The preparation method of described electrocondution slurry, comprises the steps:
(1) the two Maleimides 10 parts imide extended, matrix resin 5 parts, butanediol diglycidyl ether (being epoxide diluent) 2 parts and dispersion agent 4 parts mixing;
(2) join in the arginic aqueous solution by conductive submicron silver powder, carry out stirring 30 minutes, mix, and then carry out centrifugal, washing, dry successively, obtain the micro-silver powder of arginine modification, the consumption of silver powder is 65 parts.
(3) joined by the flaky graphite alkene of loading nano silvery in the acetone soln of 10mg/mL 1-pyrene butyric acid, 20 DEG C of ultrasonic 12h hour, form the Graphene of non-covalent modification, consumption is 5 parts.
(4) trimethylhexamethylenediamine 1 part, 2,4,6-tri-(dimethylamino methyl) phenol 0.2 part and stearylamide 1 part are at room temperature mixed.
(5) mixture that step (2) obtains is joined in (1).
(6) mixture that step (3) obtains is joined in (5).
(7) mixture that step (4) obtains is joined in (6)
(8) γ-aminopropyl triethoxysilane 1 part is joined in (7).
(9) 2,5-ditert-butylhydro quinone 0.2 part is joined in (8), at room temperature stir, ultrasonicly to mix, required conductive silver paste can be obtained.
Solidification in 45 minutes at 60 DEG C, at 150 DEG C, in 2 hours, retention is constant.
Embodiment 3
A kind of electrocondution slurry used for encapsulation of solar battery, be made up of the component of following weight part: bismaleimides 7 parts, matrix resin 6 parts, epoxide diluent 2 parts, dispersion agent 3 parts, 8 parts, the flaky graphite alkene of the loading nano silvery of modification, 1 part, solidifying agent, curing catalyst 0.3 part, the micro-silver powder of modification 70 parts, coupling agent 2 parts, 0.4 part, oxidation inhibitor.
Matrix resin is made up of the component of following weight part: two Maleimide 30 parts, bisphenol A type epoxy resin 45 parts, epoxide diluent 15 parts, dispersion agent 25 parts.
The preparation method of described electrocondution slurry, comprises the steps:
(1) the two Maleimides 7 parts imide extended, matrix resin 6 parts, butanediol diglycidyl ether (epoxide diluent) 2 parts and dispersion agent 2.5 parts mixing;
(2) join in the arginic aqueous solution by conductive submicron silver powder, carry out stirring 30 minutes, mix, and then carry out centrifugal, washing, dry successively, obtain the micro-silver powder of arginine modification, the consumption of silver powder is 70 parts.
(3) joined by the flaky graphite alkene of loading nano silvery in the acetone soln of 7mg/mL 1-pyrene butyric acid, 25 DEG C of ultrasonic 12h hour, form the Graphene of non-covalent modification, consumption is 8 parts.
(4) trimethylhexamethylenediamine 1 part, 2,4,6-tri-(dimethylamino methyl) phenol 0.3 part and stearylamide 0.5 part are at room temperature mixed.
(5) mixture that step (2) obtains is joined in (1).
(6) mixture that step (3) obtains is joined in (5).
(7) mixture that step (4) obtains is joined in (6)
(8) γ-aminopropyl triethoxysilane 2 parts is joined in (7).
(9) 2,5-ditert-butylhydro quinone 0.4 part is joined in (8), stir at 30 DEG C, ultrasonicly to mix, required conductive silver paste can be obtained.
Solidification in 60 minutes at 60 DEG C, at 150 DEG C, in 2 hours, retention is constant.
Although above-mentioned, the specific embodiment of the present invention is described; but the restriction not to invention protection domain; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection scope of the present invention.
Claims (10)
1. an electrocondution slurry used for encapsulation of solar battery, it is characterized in that: be made up of the component of following weight part: bismaleimides 5-10 part, matrix resin 5-8 part, epoxide diluent 1-2 part, dispersion agent 2-5 part, flaky graphite alkene 5-10 part of the loading nano silvery of modification, solidifying agent 1-2 part, curing catalyst 0.2-0.5 part, micro-silver powder 65-75 part of modification, coupling agent 1-2 part, oxidation inhibitor 0.2-0.5 part.
2. electrocondution slurry according to claim 1, it is characterized in that: described electrocondution slurry is made up of the component of following weight part: bismaleimides 7 parts, matrix resin 6 parts, epoxide diluent 2 parts, dispersion agent 3 parts, 8 parts, the flaky graphite alkene of the loading nano silvery of modification, 1 part, solidifying agent, curing catalyst 0.3 part, the micro-silver powder of modification 70 parts, coupling agent 2 parts, 0.4 part, oxidation inhibitor.
3. electrocondution slurry according to claim 1 and 2, is characterized in that: described matrix resin is made up of the component of following weight part: two Maleimide 20-30 part, bisphenol A type epoxy resin 35-45 part, epoxide diluent 5-15 part, dispersion agent 15-25 part.
4. electrocondution slurry according to claim 1 and 2, is characterized in that: described micro-silver powder is amino-acid modified micro-silver powder; Dispersion agent is stearylamide, and coupling agent is γ-aminopropyl triethoxysilane, and oxidation inhibitor is 2,5-ditert-butylhydro quinone.
5. electrocondution slurry according to claim 1 and 2, is characterized in that: described modified load has the flaky graphite alkene of nanometer silver to be that load has the flaky graphite alkene of nanometer silver to carry out non covalent bond modification.
6. a preparation method for electrocondution slurry used for encapsulation of solar battery, comprises step following rapid:
1) by bismaleimides 5-10 part, matrix resin 5-8 part, epoxide diluent epoxide diluent 1-2 part and the mixing of dispersion agent 4-4.5 part;
2) modification is carried out to micro-silver powder amino acid;
3) the flaky graphite alkene of loading nano silvery is carried out to the modification of non covalent bond modification;
4) by solidifying agent 1-2 part, curing catalyst 0.2-0.5 part and the mixing of dispersion agent 0.5-1 part;
5) by step 2) micro-silver powder 65-75 part of obtaining joins mixture 1) in;
6) mixture that step 3) obtains is joined 5) in;
7) mixture that step 4) obtains is joined 6) in;
8) coupling agent 1-2 part is joined 7) in;
9) oxidation inhibitor 0.2-0.5 part is joined 8) in, stir, mix, required conductive silver paste can be obtained.
7. preparation method according to claim 6, it is characterized in that: in step 3), the flaky graphite alkene of loading nano silvery is carried out to the method for non covalent bond modification, the flaky graphite alkene of loading nano silvery is comprised the steps: to join in the acetone soln of 1-pyrene butyric acid, 20-30 DEG C of ultrasonic 12h, obtains the flaky graphite alkene of the loading nano silvery of non-covalent modification.
8. preparation method according to claim 7, is characterized in that: the quality of the flaky graphite alkene of the acetone soln process loading nano silvery of every milliliter of 1-pyrene butyric acid is 0.1-0.5mg.
9. electrocondution slurry according to claim 1 and 2 is making the application in electrode.
10. described electrocondution slurry according to claim 1 and 2 application in the printed circuit boards.
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| CN115662683B (en) * | 2022-09-30 | 2023-09-12 | 宏亮电缆有限公司 | Crosslinked polyethylene high-voltage cable and preparation method thereof |
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| CN118016344B (en) * | 2024-04-08 | 2024-06-04 | 上海昌赟新能源科技有限公司 | HJT silver paste and preparation method thereof |
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