CN101745760A - Lead-free solder environmental-protection scaling powder used for soldering capacitor with film adhered on surface - Google Patents
Lead-free solder environmental-protection scaling powder used for soldering capacitor with film adhered on surface Download PDFInfo
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Abstract
The invention discloses a lead-free solder environmental-protection scaling powder used for soldering a capacitor with a film adhered on a surface, which contains 4-17 percent of rosin and derivates thereof, 3-9 percent of organic acid activating agent, 1.5-3.5 percent of diethylamine hydrochloride and/or cyclohexylamine hydrochloride, 0.3-0.7 percent of surface active agent and 70-90 percent of dissolvant. Firstly, the rosin and the derivate thereof, the organic acid activating agent and the diethylamine hydrochloride and/or the cyclohexylamine hydrochloride are added to the dissolvant to be stirred evenly; then the surface active agent is added to be continuously stirred evenly; and finally, the solution is filtered by gauze so as to remove solid impurities, and finally, light yellow clear and transparent liquid is obtained. The solder has the advantages of strong wetting power and superior solderability and can improve the soldering performance of the lead-free solder; the soldered soldering tin has even spreading, bright and smooth surface, high surface insulation resistance and superior electrical property and meets the environmental protection requirements.
Description
Technical field
The present invention relates to a kind of scaling powder, particularly relate to a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding.
Background technology
Scaling powder is the mixture of main component with rosin normally, is the auxiliary material that guarantee that welding process is carried out smoothly.Welding is the main processes in the electronic assemblies, the auxiliary material that uses when scaling powder is welding, scaling powder has auxiliary heat conduction, removal oxide, the soldered material surface tension force of reduction, the soldered material surface greasy dirt of removal, increase bonding area, prevents the effect of several aspects such as reoxidizing, by using scaling powder, make the metal surface reach necessary cleannes, the oxidation once more on surface when it prevents to weld reduces solder surface tension force, improves welding performance.The quality of scaling powder performance directly has influence on the quality of electronic product.Along with the raising of the mankind to environmental consciousness, plumbous use in electron trade also more and more is restricted, and lead-free solder has become the inevitable development trend of electron trade.But existing lead-free solder soldering fluid still exists following deficiency aspect the capacitor with film adhered on surface use: the one, and, residue is many; The 2nd,, last tin weak effect; The 3rd,, solderability is bad; The 4th,, electrical property descends behind the last tin.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding is provided, it is strong to have wetting power, solderability is superior, good welding performance, and postwelding scolding tin is sprawled evenly, tin face light is smooth, the surface insulation resistance height, the characteristics of superior electrical property, compliance with environmental protection requirements fully.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding comprises following component and percentage by weight thereof:
Rosin and derivative thereof: 4～17%
Organic acid activator: 3～9%
Diethylamine hydrochloride and/or cyclohexylamine hydrochloride: 1.5～3.5%
Surfactant: 0.3～0.7%
Solvent: 70～90%
Described rosin and derivative thereof are superfine rosin and Foral.
Described organic acid activator is one or several in the aliphatic dibasic acid.
Described surfactant is a kind of among FSN (non-ion fluorin plain class surfactant), the FSC (nonionic fluorine carbon surfactant) or two kinds.
Described solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention, during making, be earlier rosin and derivative, organic acid activator, diethylamine hydrochloride and cyclohexylamine hydrochloride to be added in the solvent, mix, and then adding surfactant, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention, the mixed liquor that has adopted absolute ethyl alcohol and isopropyl alcohol is as solvent, it mainly acts on is the solid constituent that dissolves in the scaling powder, make it to form uniform solution, be convenient to the evenly an amount of scaling powder composition of coating of element to be welded, it can also clean the light foul and the greasy dirt of metal surface simultaneously.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention, adopted nonionic surface active agent, it mainly acts on is the surface tension that produces when reducing scolder and contacting with the terminal pin metal, strengthens moistened surface power, strengthens the penetration of organic acid for activating agent.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention, adopted in the aliphatic dibasic acid one or several to be used as the organic acid for activating agent, it mainly acts on is to remove the oxide on the terminal pin and the oxide on fusion welding surface, is one of key component of scaling powder.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention has adopted diethylamine hydrochloride and/or cyclohexylamine hydrochloride, and its activity is higher, can reduce surface tension, makes scolder with wetting mutually by the weldering metal, strengthens the weldering ability that helps.
The invention has the beneficial effects as follows, owing to adopted rosin and derivative 4～17% thereof, organic acid activator 3～9%, diethylamine hydrochloride and/or cyclohexylamine hydrochloride 1.5～3.5%, surfactant 0.3～0.7%, solvent 70～90% constitutes the raw material of making the lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding, make the lead-free solder environmental-protection scaling powder of making have following advantage: wetting power is strong, solderability is superior, can improve the welding performance of lead-free solder, postwelding scolding tin is sprawled evenly, tin face light is smooth, the surface insulation resistance height, superior electrical property, compliance with environmental protection requirements.Solved in the past film of flux residue many, go up that the tin performance is bad, welding effect is poor, the shortcoming of poor electrical performance.The requirement of superior last tin effect of surface mount thin film capacitor and superior solderability be can satisfy, automatic wave soldering, immersed solder, hand weldering can be used for.
Below in conjunction with embodiment the present invention is described in further detail; But a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is not limited to embodiment.
The specific embodiment
Embodiment one, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 17% thereof, organic acid activator 9%, diethylamine hydrochloride and cyclohexylamine hydrochloride 3.3%, surfactant 0.7%, solvent 70%.
Wherein, accounting for the rosin of raw material gross weight 17% and derivative thereof is to be made of Foral that accounts for raw material gross weight 12% and the superfine rosin that accounts for raw material gross weight 5%; The organic acid activator that accounts for raw material gross weight 9% is to be made of succinic acid that accounts for raw material gross weight 7% and the adipic acid that accounts for raw material gross weight 2%; The diethylamine hydrochloride and the cyclohexylamine hydrochloride that account for raw material gross weight 3.3% are to be made of diethylamine hydrochloride that accounts for raw material gross weight 2% and the cyclohexylamine hydrochloride that accounts for raw material gross weight 1.3%; Surfactant is FSN; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 70% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 50% and the isopropyl alcohol that accounts for raw material gross weight 20%.
During making, the cyclohexylamine hydrochloride that is Foral, the superfine rosin that accounts for raw material gross weight 5%, the succinic acid that accounts for raw material gross weight 7%, the adipic acid that accounts for raw material gross weight 2% that will account for raw material gross weight 12% earlier, accounts for the diethylamine hydrochloride of raw material gross weight 2% and account for raw material gross weight 1.3% adds and accounts in the solvent of raw material gross weight 70%, mix, and then adding accounts for the FSN of raw material gross weight 0.7%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
A kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention, the mixed liquor that has adopted absolute ethyl alcohol and isopropyl alcohol is as solvent, it mainly acts on is the solid constituent that dissolves in the scaling powder, make it to form uniform solution, be convenient to the evenly an amount of scaling powder composition of coating of element to be welded, it can also clean the light foul and the greasy dirt of metal surface simultaneously.Adopted nonionic surface active agent, it mainly acts on is the surface tension that produces when reducing scolder and contacting with the terminal pin metal, strengthens moistened surface power, strengthens the penetration of organic acid for activating agent.Adopted in the aliphatic dibasic acid one or several to be used as the organic acid for activating agent, it mainly acts on is to remove the oxide on the terminal pin and the oxide on fusion welding surface, is one of key component of scaling powder.Adopted diethylamine hydrochloride and/or cyclohexylamine hydrochloride, its activity is higher, can reduce surface tension, makes scolder with wetting mutually by the weldering metal, strengthens the weldering ability that helps.
Embodiment two, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 15% thereof, organic acid activator 7%, diethylamine hydrochloride and cyclohexylamine hydrochloride 2.3%, surfactant 0.7%, solvent 75%.
Wherein, accounting for the rosin of raw material gross weight 15% and derivative thereof is to be made of Foral that accounts for raw material gross weight 12% and the superfine rosin that accounts for raw material gross weight 3%; The organic acid activator that accounts for raw material gross weight 7% is a succinic acid; The diethylamine hydrochloride and the cyclohexylamine hydrochloride that account for raw material gross weight 2.3% are to be made of diethylamine hydrochloride that accounts for raw material gross weight 1.3% and the cyclohexylamine hydrochloride that accounts for raw material gross weight 1%; Surfactant is FSN; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 75% is the isopropyl alcohol formation that accounts for the absolute ethyl alcohol of raw material gross weight 55% and account for raw material gross weight 20%.
During making, the cyclohexylamine hydrochloride that is Foral, the superfine rosin that accounts for raw material gross weight 3%, the succinic acid that accounts for raw material gross weight 7% that will account for raw material gross weight 12% earlier, accounts for the diethylamine hydrochloride of raw material gross weight 1.3% and account for raw material gross weight 1% adds and accounts in the solvent of raw material gross weight 75%, mix, and then adding accounts for the FSN of raw material gross weight 0.7%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
Embodiment three, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 12% thereof, organic acid activator 5.5%, diethylamine hydrochloride and cyclohexylamine hydrochloride 2%, surfactant 0.5%, solvent 80%.
Wherein, accounting for the rosin of raw material gross weight 12% and derivative thereof is to be made of Foral that accounts for raw material gross weight 10% and the superfine rosin that accounts for raw material gross weight 2%; The organic acid activator that accounts for raw material gross weight 5.5% is to be made of succinic acid that accounts for raw material gross weight 4% and the adipic acid that accounts for raw material gross weight 1.5%; The diethylamine hydrochloride and the cyclohexylamine hydrochloride that account for raw material gross weight 2% are to be made of diethylamine hydrochloride that accounts for raw material gross weight 1.5% and the cyclohexylamine hydrochloride that accounts for raw material gross weight 0.5%; The surfactant that accounts for raw material gross weight 0.5% is to be made of FSN that accounts for raw material gross weight 0.3% and the FSC that accounts for raw material gross weight 0.2%; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 80% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 60% and the isopropyl alcohol that accounts for raw material gross weight 20%.
During making, it is the Foral that will account for raw material gross weight 10% earlier, account for the superfine rosin of raw material gross weight 2%, account for the succinic acid of raw material gross weight 4%, account for the adipic acid of raw material gross weight 1.5%, the diethylamine hydrochloride that accounts for raw material gross weight 1.5% accounts in the solvent of raw material gross weight 80% with the cyclohexylamine hydrochloride adding that accounts for raw material gross weight 0.5%, mix, and then adding accounts for the FSN and the FSC that accounts for raw material gross weight 0.2% of raw material gross weight 0.3%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
Embodiment four, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 11% thereof, organic acid activator 6%, diethylamine hydrochloride 2.5%, surfactant 0.5%, solvent 80%.
Wherein, accounting for the rosin of raw material gross weight 11% and derivative thereof is to be made of Foral that accounts for raw material gross weight 9% and the superfine rosin that accounts for raw material gross weight 2%; The organic acid activator that accounts for raw material gross weight 6% is a succinic acid; Surfactant is FSC; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 80% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 55% and the isopropyl alcohol that accounts for raw material gross weight 25%.
During making, be that Foral, the superfine rosin 5% that accounts for raw material gross weight 2%, the succinic acid that accounts for raw material gross weight 6% that will account for raw material gross weight 9% earlier, the diethylamine hydrochloride adding that accounts for raw material gross weight 2.5% account in the solvent of raw material gross weight 80%, mix, and then adding accounts for the FSC of raw material gross weight 0.5%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
Embodiment five, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 9% thereof, organic acid activator 3.5%, diethylamine hydrochloride and cyclohexylamine hydrochloride 2%, surfactant 0.5%, solvent 85%.
Wherein, accounting for the rosin of raw material gross weight 9% and derivative thereof is to be made of Foral that accounts for raw material gross weight 8% and the superfine rosin that accounts for raw material gross weight 1%; The organic acid activator that accounts for raw material gross weight 3.5% is to be made of succinic acid that accounts for raw material gross weight 3% and the adipic acid that accounts for raw material gross weight 0.5%; The diethylamine hydrochloride and the cyclohexylamine hydrochloride that account for raw material gross weight 2% are to be made of diethylamine hydrochloride that accounts for raw material gross weight 1.5% and the cyclohexylamine hydrochloride that accounts for raw material gross weight 0.5%; The surfactant that accounts for raw material gross weight 0.5% is to be made of FSN that accounts for raw material gross weight 0.4% and the FSC that accounts for raw material gross weight 0.1%; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 85% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 60% and the isopropyl alcohol that accounts for raw material gross weight 25%.
During making, it is the Foral that will account for raw material gross weight 8% earlier, account for the superfine rosin of raw material gross weight 1%, account for the succinic acid of raw material gross weight 3%, account for the adipic acid of raw material gross weight 0.5%, the diethylamine hydrochloride that accounts for raw material gross weight 1.5% accounts in the solvent of raw material gross weight 85% with the cyclohexylamine hydrochloride adding that accounts for raw material gross weight 0.5%, mix, and then adding accounts for the FSN and the FSC that accounts for raw material gross weight 0.1% of raw material gross weight 0.4%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
Embodiment six, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 5% thereof, organic acid activator 3%, cyclohexylamine hydrochloride 1.7%, surfactant 0.3%, solvent 90%.
Wherein, accounting for the rosin of raw material gross weight 5% and derivative thereof is to be made of Foral that accounts for raw material gross weight 4.5% and the superfine rosin that accounts for raw material gross weight 0.5%; The organic acid activator that accounts for raw material gross weight 3% is to be made of succinic acid that accounts for raw material gross weight 2% and the adipic acid that accounts for raw material gross weight 1%; The surfactant that accounts for raw material gross weight 0.3% is to be made of FSN that accounts for raw material gross weight 0.2% and the FSC that accounts for raw material gross weight 0.1%; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 90% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 70% and the isopropyl alcohol that accounts for raw material gross weight 20%.
During making, be that Foral, the superfine rosin that accounts for raw material gross weight 0.5%, the succinic acid that accounts for raw material gross weight 2%, the adipic acid that accounts for raw material gross weight 1% that will account for raw material gross weight 4.5% earlier, the cyclohexylamine hydrochloride adding that accounts for raw material gross weight 1.7% account in the solvent of raw material gross weight 90%, mix, and then adding accounts for the FSN and the FSC that accounts for raw material gross weight 0.1% of raw material gross weight 0.2%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
Embodiment seven, a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention is to adopt following component and raw materials by weight percent thereof to be made: rosin and derivative 4% thereof, organic acid activator 4%, diethylamine hydrochloride and cyclohexylamine hydrochloride 1.5%, surfactant 0.5%, solvent 90%.
Wherein, accounting for the rosin of raw material gross weight 4% and derivative thereof is to be made of Foral that accounts for raw material gross weight 3.5% and the superfine rosin that accounts for raw material gross weight 0.5%; The organic acid activator that accounts for raw material gross weight 4% is an adipic acid; The diethylamine hydrochloride and the cyclohexylamine hydrochloride that account for raw material gross weight 1.5% are to be made of 1.2% diethylamine hydrochloride that accounts for the raw material gross weight and the cyclohexylamine hydrochloride that accounts for raw material gross weight 0.3%; The surfactant that accounts for raw material gross weight 0.5% is to be made of FSN that accounts for raw material gross weight 0.2% and the FSC that accounts for raw material gross weight 0.3%; Solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol, and the solvent that accounts for raw material gross weight 90% is to be made of absolute ethyl alcohol that accounts for raw material gross weight 65% and the isopropyl alcohol that accounts for raw material gross weight 25%.
During making, the cyclohexylamine hydrochloride that is Foral, the superfine rosin that accounts for raw material gross weight 0.5%, the adipic acid that accounts for raw material gross weight 4% that will account for raw material gross weight 3.5% earlier, accounts for 1.2% diethylamine hydrochloride of raw material gross weight and account for raw material gross weight 0.3% adds and accounts in the solvent of raw material gross weight 90%, mix, and then adding accounts for the FSN and the FSC that accounts for raw material gross weight 0.3% of raw material gross weight 0.2%, continue to mix, at last this solution is fallen solid impurity with filtered through gauze, obtain flaxen clear liquid at last.
The foregoing description only is used for further specifying a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding of the present invention; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (5)
1. one kind is used for the lead-free solder environmental-protection scaling powder that capacitor with film adhered on surface welds, and it is characterized in that: comprise following component and percentage by weight thereof:
Rosin and derivative thereof: 4～17%
Organic acid activator: 3～9%
Diethylamine hydrochloride and/or cyclohexylamine hydrochloride: 1.5～3.5%
Surfactant: 0.3～0.7%
Solvent: 70～90%.
2. a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding according to claim 1, it is characterized in that: described rosin and derivative thereof are superfine rosin and Foral.
3. a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding according to claim 1, it is characterized in that: described organic acid activator is one or several in the aliphatic dibasic acid.
4. a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding according to claim 1 is characterized in that: described surfactant is plain class surfactant of non-ion fluorin and/or nonionic fluorine carbon surfactant.
5. a kind of lead-free solder environmental-protection scaling powder that is used for the capacitor with film adhered on surface welding according to claim 1, it is characterized in that: described solvent is the mixed liquor of absolute ethyl alcohol and isopropyl alcohol.
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| CN2008100723382A CN101745760B (en) | 2008-12-08 | 2008-12-08 | Lead-free solder environmental-protection scaling powder used for soldering capacitor with film adhered on surface |
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| CN2008100723382A CN101745760B (en) | 2008-12-08 | 2008-12-08 | Lead-free solder environmental-protection scaling powder used for soldering capacitor with film adhered on surface |
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| CN101745760B CN101745760B (en) | 2012-07-04 |
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| CN101890595A (en) * | 2010-07-02 | 2010-11-24 | 厦门大学 | Low-rosin washing-free soldering flux for lead-free flux-cored wires and preparation method thereof |
| CN102689113A (en) * | 2012-06-15 | 2012-09-26 | 东莞市剑鑫电子材料有限公司 | Cleaning-free and residue-free scaling powder and preparation method thereof |
| CN103817461A (en) * | 2014-03-17 | 2014-05-28 | 苏州龙腾万里化工科技有限公司 | Resin-core soldering flux |
| CN104416297A (en) * | 2013-08-21 | 2015-03-18 | 苏州优诺电子材料科技有限公司 | Clean-free solder paste low in ICT (in circuit testing) false positive rate |
| CN104722959A (en) * | 2015-03-31 | 2015-06-24 | 北京航空航天大学 | Soldering flux for aluminum alloy low-temperature brazing |
| CN110605499A (en) * | 2018-06-14 | 2019-12-24 | 千住金属工业株式会社 | Flux, solder paste, substrate, electronic device, and substrate manufacturing method |
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| CN85102604B (en) * | 1985-04-06 | 1988-08-24 | 福建师范大学 | Resina-type flux of brazing |
| CN1017324B (en) * | 1989-05-09 | 1992-07-08 | 化学工业部晨光化工研究院一分院 | Flux assistant for tin soldering of printed circuit board |
| US4940498A (en) * | 1989-08-14 | 1990-07-10 | Multicore Solders Limited | Flux composition |
| CN1290662C (en) * | 2004-03-30 | 2006-12-20 | 深圳市唯特偶化工开发实业有限公司 | Welding flux agent of solder with no lead and free from cleaning |
| CN1307024C (en) * | 2004-05-09 | 2007-03-28 | 邓和升 | High adhesion leadless soldering tin grease |
| CN100571962C (en) * | 2006-06-13 | 2009-12-23 | 深圳市合明科技有限公司 | A kind of SMT no-lead tinol |
| CN101073862A (en) * | 2007-06-08 | 2007-11-21 | 北京工业大学 | Low-rosin and cleaning-free welding accessory without halogen for lead-free welding grease |
| CN100528462C (en) * | 2007-07-17 | 2009-08-19 | 西安理工大学 | Low-rosin cleaning-free scaling powder for SnAgCu series lead-free soldering paste and preparation method thereof |
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| CN101890595A (en) * | 2010-07-02 | 2010-11-24 | 厦门大学 | Low-rosin washing-free soldering flux for lead-free flux-cored wires and preparation method thereof |
| CN101890595B (en) * | 2010-07-02 | 2012-07-04 | 厦门大学 | Low-rosin washing-free soldering flux for lead-free flux-cored wires and preparation method thereof |
| CN102689113A (en) * | 2012-06-15 | 2012-09-26 | 东莞市剑鑫电子材料有限公司 | Cleaning-free and residue-free scaling powder and preparation method thereof |
| CN104416297A (en) * | 2013-08-21 | 2015-03-18 | 苏州优诺电子材料科技有限公司 | Clean-free solder paste low in ICT (in circuit testing) false positive rate |
| CN103817461A (en) * | 2014-03-17 | 2014-05-28 | 苏州龙腾万里化工科技有限公司 | Resin-core soldering flux |
| CN104722959A (en) * | 2015-03-31 | 2015-06-24 | 北京航空航天大学 | Soldering flux for aluminum alloy low-temperature brazing |
| CN110605499A (en) * | 2018-06-14 | 2019-12-24 | 千住金属工业株式会社 | Flux, solder paste, substrate, electronic device, and substrate manufacturing method |
| CN113305470A (en) * | 2021-05-28 | 2021-08-27 | 华天科技（西安）有限公司 | Cleaning soldering flux and preparation method and use method thereof |
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