CN114559181A - Photovoltaic cleaning-free soldering flux and preparation method thereof - Google Patents
Photovoltaic cleaning-free soldering flux and preparation method thereof Download PDFInfo
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- CN114559181A CN114559181A CN202210384935.9A CN202210384935A CN114559181A CN 114559181 A CN114559181 A CN 114559181A CN 202210384935 A CN202210384935 A CN 202210384935A CN 114559181 A CN114559181 A CN 114559181A
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- China
- Prior art keywords
- flux
- photovoltaic
- soldering flux
- surfactant
- cleaning
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses a cleaning-free soldering flux for photovoltaic and a preparation method thereof, belonging to the technical field of photovoltaic; the soldering flux comprises 1.5-3% of active agent, 0.08-0.2% of surfactant, 0.8-2.7% of film forming agent, 0.08-0.25% of antioxidant, 0.08-0.25% of nano catalyst and 94-97% of solvent by mass percent, and the soldering flux is obtained after the components are uniformly mixed. The soldering flux is particularly suitable for the requirements of solar photovoltaic components on the soldering flux, has few residues, and solves the problem of influence of the residues of the soldering flux on the solar industry at the present stage.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a cleaning-free soldering flux for photovoltaics and a preparation method thereof.
Background
The soldering flux for the solar photovoltaic module packaging material is a mixture with rosin as a main component, and is an auxiliary material for ensuring the smooth operation of a welding process. The soldering flux has the main functions of eliminating the oxide on the surface of the solder and the soldered parent metal (material), so that the metal surface reaches the necessary cleanness, the re-oxidation of the surface during soldering is prevented, the surface tension of the solder is reduced, the soldering performance is improved, and the quality of electronic products is directly influenced.
The no-clean soldering flux is a novel soldering flux generated along with the development of the electronic industry and the requirement of environmental protection. The cleaning-free technology is a process technology that low-solid-content and non-corrosive soldering flux is adopted in electronic assembly production, welding is carried out in an inert gas environment, residues on a welded circuit board are extremely tiny and non-corrosive, the welded circuit board has extremely high surface insulation resistance, and the ion cleanliness standard can be achieved without cleaning under ordinary conditions, and the next procedure can be directly carried out. The method has important significance in solving the aspects of reducing environmental pollution without using a similar cleaning solvent and solving the problems of difficult cleaning caused by fine clearance and high-density component assembly and compatibility between components and cleaning agents.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problem that the treatment effect of the conventional flux on the welding surface is poor, the cleaning-free soldering flux for the photovoltaic is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: the cleaning-free soldering flux for the photovoltaic is characterized by comprising the following raw material components in percentage by mass of 100 percent:
preferably, the composition comprises the following raw material components in percentage by mass of 100 percent:
preferably, the film former is 2%.
Further, the activating agent is one or a mixture of succinic acid, glutaric acid, adipic acid and malonic acid.
Further, the surfactant is an alkyne diol modified surfactant and/or a fluorine-containing surfactant.
Preferably, the acetylenic diol-modified surfactant is ethoxylated acetylenic diol diethoxy ether; the fluorine-containing surfactant is fluorinated acrylic copolymer or ethoxy nonionic fluorocarbon surfactant.
Further, the film forming agent is polyethylene glycol and/or tripropylene glycol butyl ether.
Further, the antioxidant is benzotriazole.
Further, the nano-catalyst is trimethylbutylene glycol.
Further, the solvent is one or a mixture of several of isopropanol, ethanol and isohexide.
The invention also provides a preparation method of the photovoltaic cleaning-free soldering flux, which comprises the following steps: respectively and uniformly mixing an active agent, a surfactant, a film-forming agent, an antioxidant, a nano catalyst and a solvent to obtain the soldering flux.
Compared with the prior art, the method has the following advantages:
1. the cleaning-free soldering flux for photovoltaic has the advantages of difficult residue of welding slag in the welding process, good uniformity of the welding tin surface, no obvious visible pores and excellent welding quality.
2. According to the invention, benzotriazole is used to prevent the surface of the welded material from being oxidized, and remove the oxides on the surfaces of the solder and the welded parent metal, so that the metal surface can reach good cleanliness, and the welding-assistant effect is improved.
3. The surface active agent selected by the invention reduces the surface tension of the welding flux, increases the wettability of the welding flux to the welding pad, and has good soldering assisting effect and no residue.
Detailed Description
The present invention is further illustrated by the following specific examples, but it should be understood by those skilled in the art that the specific examples of the present invention are not intended to limit the present invention in any way, and any equivalents based on the present invention are within the scope of the present invention.
Example 1:
respectively taking 15g of succinic acid, 1g of ethoxy acetylene glycol diethoxy ether, 8g of polyethylene glycol, 1g of benzotriazole, 1g of trimethylbutylene glycol and 973g of isopropanol, and uniformly mixing and stirring to obtain the special photovoltaic soldering flux.
Example 2:
respectively taking 15g of succinic acid, 15g of glutaric acid, 2g of ethoxy acetylene glycol diethoxy ether, 20g of tripropylene glycol butyl ether, 2.5g of benzotriazole, 2.5g of trimethylbutylene glycol and 943g of ethanol, and uniformly mixing and stirring to obtain the special photovoltaic soldering flux.
Example 3:
respectively taking 20g of malonic acid, 1.5g of fluorinated acrylic copolymer, 15g of polyethylene glycol, 2g of benzotriazole, 2g of trimethylbutylene glycol and 959.5g of ethanol, and uniformly mixing and stirring to obtain the special photovoltaic soldering flux.
Example 4:
respectively taking 20g of malonic acid, 1.5g of fluorinated acrylic copolymer, 15g of tripropylene glycol butyl ether, 2g of benzotriazole, 2g of trimethylbutylene glycol and 959.5g of isohexane glycol, and uniformly mixing and stirring to obtain the special flux for photovoltaic.
Example 5:
respectively taking 20g of succinic acid, 1.5g of non-ionic fluorocarbon surfactant, 15g of polyethylene glycol, 2g of benzotriazole, 2g of trimethylbutylene glycol and 959.5g of isopropanol, and uniformly mixing and stirring to obtain the special flux for photovoltaic.
Comparative example 1: commercial no-clean flux.
Example 6: the performance of the fluxes of examples 1-5 and comparative example 1 was measured and the results are shown in table 1.
TABLE 1 soldering flux Performance test
Claims (10)
1. The cleaning-free soldering flux for the photovoltaic is characterized by comprising the following raw material components in percentage by mass of 100 percent:
2. the cleaning-free soldering flux for the photovoltaic use as claimed in claim 1, wherein the soldering flux comprises the following raw material components by mass percent of 100%:
3. the cleaning-free flux for photovoltaic use according to claim 2, wherein the activator is one or a mixture of succinic acid, glutaric acid, adipic acid and malonic acid.
4. The no-clean flux for photovoltaic use according to claim 2, wherein said surfactant is an alkyne diol modified surfactant and/or a fluorine-containing surfactant.
5. The no-clean photovoltaic flux according to claim 4, wherein said acetylenic diol-modifying surfactant is ethoxylated acetylenic diol diethoxy ether; the fluorine-containing surfactant is fluorinated acrylic copolymer or ethoxy nonionic fluorocarbon surfactant.
6. The no-clean flux for photovoltaic use according to claim 2, wherein said film-forming agent is polyethylene glycol and/or tripropylene glycol butyl ether.
7. The photovoltaic no-clean flux according to claim 2, wherein the antioxidant is benzotriazole.
8. The no-clean flux for photovoltaic use according to claim 2, wherein said nanocatalyst is trimethylbutylene glycol.
9. The cleaning-free soldering flux for photovoltaic use according to claim 2, wherein the solvent is one or a mixture of isopropanol, ethanol and isohexane glycol.
10. The method for preparing the cleaning-free flux for photovoltaic use according to claim 2, comprising the steps of: respectively and uniformly mixing an active agent, a surfactant, a film-forming agent, an antioxidant, a nano catalyst and a solvent to obtain the soldering flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384935.9A CN114559181A (en) | 2022-04-13 | 2022-04-13 | Photovoltaic cleaning-free soldering flux and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210384935.9A CN114559181A (en) | 2022-04-13 | 2022-04-13 | Photovoltaic cleaning-free soldering flux and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114559181A true CN114559181A (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210384935.9A Pending CN114559181A (en) | 2022-04-13 | 2022-04-13 | Photovoltaic cleaning-free soldering flux and preparation method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101049661A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Free from cleaning soldering flux without halogen and rosin in use for solder without lead |
| CN103056561A (en) * | 2012-12-30 | 2013-04-24 | 广东普赛特电子科技股份有限公司 | High-insulativity halogen-free scaling powder and preparation method thereof |
| CN103801857A (en) * | 2012-11-06 | 2014-05-21 | 西北机器有限公司 | No-clean soldering flux and preparation method of no-clean soldering flux |
| CN104175023A (en) * | 2014-04-30 | 2014-12-03 | 江苏博迁新材料有限公司 | Halogen-free soldering flux for lead-free solder paste |
| CN104400257A (en) * | 2014-10-29 | 2015-03-11 | 重庆理工大学 | Scaling powder for no-clean lead-free low-silver welding paste |
| CN104874940A (en) * | 2015-06-18 | 2015-09-02 | 重庆理工大学 | Non-cleaning flux for low-silver lead-free brazing filler metal and preparation method of non-cleaning flux |
| CN105269181A (en) * | 2015-06-19 | 2016-01-27 | 常州天合光伏焊带材料有限公司 | High-activity scaling powder for photovoltaic solder strip |
| WO2021115287A1 (en) * | 2019-12-09 | 2021-06-17 | 青岛歌尔微电子研究院有限公司 | Solder flux and preparation method thereof, tin paste and preparation method thereof |
-
2022
- 2022-04-13 CN CN202210384935.9A patent/CN114559181A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101049661A (en) * | 2007-05-11 | 2007-10-10 | 北京工业大学 | Free from cleaning soldering flux without halogen and rosin in use for solder without lead |
| CN103801857A (en) * | 2012-11-06 | 2014-05-21 | 西北机器有限公司 | No-clean soldering flux and preparation method of no-clean soldering flux |
| CN103056561A (en) * | 2012-12-30 | 2013-04-24 | 广东普赛特电子科技股份有限公司 | High-insulativity halogen-free scaling powder and preparation method thereof |
| CN104175023A (en) * | 2014-04-30 | 2014-12-03 | 江苏博迁新材料有限公司 | Halogen-free soldering flux for lead-free solder paste |
| CN104400257A (en) * | 2014-10-29 | 2015-03-11 | 重庆理工大学 | Scaling powder for no-clean lead-free low-silver welding paste |
| CN104874940A (en) * | 2015-06-18 | 2015-09-02 | 重庆理工大学 | Non-cleaning flux for low-silver lead-free brazing filler metal and preparation method of non-cleaning flux |
| CN105269181A (en) * | 2015-06-19 | 2016-01-27 | 常州天合光伏焊带材料有限公司 | High-activity scaling powder for photovoltaic solder strip |
| WO2021115287A1 (en) * | 2019-12-09 | 2021-06-17 | 青岛歌尔微电子研究院有限公司 | Solder flux and preparation method thereof, tin paste and preparation method thereof |
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