CN102114582A - Water-soluble flux based on ceramic condenser soldering - Google Patents
Water-soluble flux based on ceramic condenser soldering Download PDFInfo
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- CN102114582A CN102114582A CN2009102389282A CN200910238928A CN102114582A CN 102114582 A CN102114582 A CN 102114582A CN 2009102389282 A CN2009102389282 A CN 2009102389282A CN 200910238928 A CN200910238928 A CN 200910238928A CN 102114582 A CN102114582 A CN 102114582A
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Abstract
The invention relates to a water-soluble flux based on ceramic condenser soldering, which comprises the following components by weight percent: 20-40% of cosolvent, 1-3% of organic acid, 0.1-0.5% of non-ionic surface active agent, 1-2% of organic amine, 5-10% of high-boiling point solvent, 1-2% of high-temperature film-forming agent, and the balance of alcohol solvent.
Description
Technical field
The present invention relates to a kind of water-soluble flux of electron trade ceramic condenser welding usefulness.
Background technology
Along with the fast development of electron trade, the also growing and raising of the use amount of components and parts such as ceramic condenser and quality requirement.The former old technology of tradition is followed in the welding of ceramic condenser, often adopts the rosin or the resin welding of high solids content, and the silver layer surface of electric capacity can stay the resin residue of sticking type.Residuals is sealed coating and can be produced certain influence the back, it may reduce the high-voltage resistance capability of electric capacity and cause epoxy resin etc. to seal the hole of material and bring deliquescence, so with adopting trichloro-ethylene, toluene, acetone equal solvent to clean after the abietic resin welding.And this type of cleans material atmospheric ozone layer is had strong destruction, and the category that must forbidding of belonging to that the United Nations's environmental protection proposed produces and use also brings very big toxic action to plant operations personnel human body simultaneously.Therefore electron trade is is progressively rectified and improved and is eliminated this type of technology now.Be directed to this, the applicant drops into a large amount of personnel and material resources have been developed a kind of scaling powder that is specific to ceramic condenser welding usefulness.It is thinking that this scaling powder adopts water-soluble, and the welding back is used pure water to add ultrasonic wave and cleaned, and its surface is no any residue after water cleans.
Summary of the invention
The object of the present invention is to provide a kind of water-soluble flux that can guarantee the lead-free solder special use of electronic product high reliability request, particularly at the welding of components and parts such as ceramic condenser.
For achieving the above object, the invention provides a kind of water-soluble flux based on the ceramic condenser soldering, it mainly is made up of following components by weight proportion: cosolvent: 20-40%, organic acid: 1-3%, non-ionic surface active agent: 0.1-0.5%, organic amine: 1-2%, high boiling solvent: 5-10%, high temperature film forming agent: 1-2%, alcohols solvent: surplus.
Its collocation method is as follows: at first add the alcohols solvent that measures in reactor, open agitating device, add organic acid, add organic amine again, mix and stirred 30-60 minute, its organic acid and organic amine are reacted completely.The back adds high temperature film forming agent, cosolvent, high boiling solvent successively, adds non-ionic surface active agent at last.Mix, the settled solution that filter static back is this product scaling powder.
Described cosolvent can be selected the polyalcohols material for use, as glycerine, polyethylene glycol, polypropylene glycol, isomery alcohol ether, modified polyether, diethylene glycol (DEG), sorbierite, season pentadiol ester etc.Select the moderate polyalcohol of molecular weight in this scaling powder for use, make it have good water-solubility and good temperature tolerance, control its flash-point more than 250 ℃.This type of polyalcohol material is a kind of indispensable medium in this scaling powder, and it brings good wetability, improves the flowability and the oxidation that prevents tin of tin.And because the flash-point height, heat-resisting ability is strong, can well protect corrosion and the discoloration problem of silver in welding process.The polyalcohols material selects for use molecular weight usually between 200-1000, make the dissolubility of its high temperature resistance and water all good (the dissolubility meeting variation of big more its water of molecular weight, but it can improve the heat-resisting quantity of solder flux simultaneously).
Described organic acid is monobasic or binary aliphatic acid, and the organic acid, acid anhydrides etc. that contain phenyl ring, mainly contains: malic acid, citric acid, succinic acid, adipic acid, propionic acid, lactic acid, benzoic acid, phthalic acid, succinic anhydride, stearic acid, oleic acid etc. partially.Select for use the organic acid principle at first must consider its activation capacity, secondly must consider its boiling point and decomposition temperature.We select for use several organic acids composite usually, make its welding activation temperature wide ranges, and the deoxidation ability of scolding tin is strong, can satisfy the welding activity of lead-free solder.
Described organic amine mainly is triethanolamine, MEA, cyclohexylamine, isopropanolamine, ethylenediamine, lauryl amine, urea etc., and the purpose of selecting amine for use mainly is that itself and acids are reacted completely, and improves the heat-resisting ability of acids.Organic amine can balance PH acidity in addition, reduces acid at high temperature to the corrosion of components and parts, and the further appearance of protection silver makes totally light of silver surface.
Described high boiling solvent is mainly pure ethers material, is mainly: ethylene glycol ethyl ether, butyl glycol ether, propylene-glycol ethyl ether, diethylene glycol monobutyl ether, tetrahydrofurfuryl alcohol etc.It can improve the high-temperature volatile of scaling powder, enlarges the temperature scope of application of scaling powder.
Described surfactant is the nonionic class, mainly contains APEO, isomery alcohol ether, phosphoric acid ester of OPEO, modification etc.This class surfactant has good water-solubility and cleansing power, can reduce the surface tension of scaling powder and tin material, improves the autgmentability of scaling powder, improves the flowability of tin material.
Described alcohols solvent agent mainly contains: isopropyl alcohol, ethanol, methyl alcohol, mixed alcohol.
Described high temperature film forming agent mainly contains: season pentadiol ester, DBE (mixed acid divalence ester), season pentanediol etc.
Water-soluble flux of the present invention does not have the test stone of special regulation, but by the U.S. associating industrial inspection standard J-STD-004 check of approving at present, every technical indicator is all qualified.Can satisfy the welding requirements of the vigour parts such as ceramic condenser of electron trade fully.
The invention has the advantages that: 1, it has good welds, and it is strong to change the tin ability, and lead-in wire and silver layer surface adhesion are good, tin mobile very good, scolding tin bright and can be fully go between and silver layer between the space smooth and level.Adhesion is good, and newton's tensile test is qualified.2, the capacity loss rate is low, does not damage the electric capacity silver layer surface, and the proportion of goods damageds of electric capacity can reach 1/10th of its standard.3, temperature tolerance is strong, and scaling powder adopts multiple macromolecule filming material, can prevent well that silver from corroding under hot environment, and the surface does not have jaundice and trace generates.4, electric capacity can be high pressure resistant after cleaning, withstand voltage reaching more than the 3000-5000V.Be applicable to the electric capacity welding of ac high-voltage.
The specific embodiment
Below in conjunction with following embodiment the present invention is further described: to make a kind of environmental protection, nonhazardous and to be applicable to that the scaling powder of lead-free solder is an example.It has changed that to adopt high rosin, high resin composition be main scaling powder method for designing in the past this scaling powder, and it is strong that this scaling powder has wettability, can strengthen the solderability of lead-free solder, can adapt to the high-temperature welding requirements.For the welding of ceramic condenser components and parts, this product has very desirable effect, both can improve the environment of workman's operation, brings tangible economic benefit also can for the manufacturer that uses, and this product also is a kind of trend of scaling powder future development.
Embodiment one: a kind of water-soluble flux based on the ceramic condenser soldering, and it mainly is made up of following components by weight proportion: sorbierite: 34%; Adipic acid: 2.1%; Stearic acid: 0.4%; Propionic acid: 0.5%; Triethanolamine: 1.2%; TX-10:0.5%; Season pentadiol ester: 1.5%; Diethylene glycol monobutyl ether: 6%; IPA (isopropyl alcohol): surplus.
Its collocation method is as follows: at first add the alcohols solvent IPA (isopropyl alcohol) that measures in reactor, open agitating device, add organic acid: stearic acid, propionic acid, adipic acid, add organic amine again: triethanolamine, mix and stirred 30-60 minute, make its organic acid stearic acid, propionic acid, adipic acid and organic amine: triethanolamine reacts completely.The back adds high temperature film forming agent season pentadiol ester, cosolvent sorbierite, high boiling solvent diethylene glycol monobutyl ether successively, adds non-ionic surface active agent TX-10 at last, adds the isopropyl alcohol of metering.Mix, the settled solution that filter static back is this product scaling powder.
Embodiment two: a kind of water-soluble flux based on the ceramic condenser soldering, and it mainly is made up of following components by weight proportion: PEG400:25%; Succinic acid: 1.5%; Stearic acid: 0.3%; Oleic acid: 1.0%; Citric acid: 0.2%; Isopropanolamine: 2%; TX-10:0.2%; Tetrahydrofurfuryl alcohol: 10%; DBE (mixed acid divalence ester): 2%; Ethanol: surplus.
Its collocation method is as follows: at first add the alcohols solvent ethanol that measures in reactor, open agitating device, add organic acid stearic acid, oleic acid, citric acid, succinic acid, add organic amine again: isopropanolamine, mix and stirred 30-60 minute, make its organic acid stearic acid, oleic acid, citric acid, succinic acid and organic amine: isopropanolamine reacts completely.The back adds high temperature film forming agent DBE (mixed acid divalence ester), cosolvent PEG400, high boiling solvent tetrahydrofurfuryl alcohol successively, adds non-ionic surface active agent TX-10 at last, adds the ethanol of metering.Mix, the settled solution that filter static back is this product scaling powder.
Embodiment three: a kind of water-soluble flux based on the ceramic condenser soldering, and it mainly is made up of following components by weight proportion: glycerine: 5%; PEG1000:20%; Season pentanediol: 2%; Benzoic acid: 1.5%; Inclined to one side phthalic acid: 0.3%; Succinic anhydride: 0.3%; Ethylenediamine: 1.1%; Isomery alcohol ether: 0.2%; Monobutyl ether: 8%; Mixed alcohol: surplus.
Its collocation method is as follows: at first add the alcohols solvent mixed alcohol that measures in reactor, open agitating device, add organic acid benzoic acid, inclined to one side phthalic acid, succinic anhydride, add organic amine ethylenediamine again, mix and stirred 30-60 minute, make its organic acid benzoic acid, inclined to one side phthalic acid, succinic anhydride and organic amine reacting ethylenediamine complete.The back adds high temperature film forming agent season pentanediol, cosolvent PEG1000, glycerine successively, and the high boiling solvent monobutyl ether adds non-ionic surface active agent isomery alcohol ether at last, adds the mixed alcohol of metering.Mix, the settled solution that filter static back is this product scaling powder.
The equal weight ratio of above material is implemented, and the method for configuration is all by enforcement noted earlier, and this product that makes is a water-soluble flux, and the cleaning performance with good welding performance, water is good, is a environmental protection and the scaling powder that is specific to ceramic condenser welding usefulness.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any pro forma restriction; though the present invention discloses as above with preferred embodiment; yet be not in order to limit the present invention; any those skilled in the art; in not breaking away from the technical solution of the present invention scope; when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations; in every case be the content that does not break away from technical solution of the present invention; according to technical spirit of the present invention to any simple modification that above embodiment did; equivalent variations and modification all still belong in the protection domain of technical solution of the present invention.
Claims (2)
1. water-soluble flux based on the ceramic condenser soldering, it is characterized in that: it mainly is made up of following components by weight proportion: cosolvent: 20-40%, organic acid: 1-3%, non-ionic surface active agent: 0.1-0.5%, organic amine: 1-2%, high boiling solvent: 5-10%, high temperature film forming agent: 1-2%, alcohols solvent: surplus.
2. a kind of water-soluble flux according to claim 1 based on the ceramic condenser soldering, it is characterized in that: its collocation method is as follows: at first add the alcohols solvent that measures in reactor, open agitating device, add organic acid, add organic amine again, mix and stirred 30-60 minute, its organic acid and organic amine are reacted completely, the back adds high temperature film forming agent, cosolvent, high boiling solvent successively, add non-ionic surface active agent at last, mix the settled solution that filters static back and be this product scaling powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102389282A CN102114582A (en) | 2009-12-30 | 2009-12-30 | Water-soluble flux based on ceramic condenser soldering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102389282A CN102114582A (en) | 2009-12-30 | 2009-12-30 | Water-soluble flux based on ceramic condenser soldering |
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| CN102114582A true CN102114582A (en) | 2011-07-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553859A (en) * | 2011-12-29 | 2012-07-11 | 荣盛建设工程有限公司 | Reinforcing steel bar welding method |
| CN109940311A (en) * | 2017-12-20 | 2019-06-28 | 海太半导体（无锡）有限公司 | A kind of low-temperature catalyzed scaling powder |
| CN113290297A (en) * | 2021-05-27 | 2021-08-24 | 贵州永红航空机械有限责任公司 | Brazing filler metal assembling method for brazing high-temperature alloy honeycomb silencer |
| CN113547253A (en) * | 2020-04-23 | 2021-10-26 | 海太半导体（无锡）有限公司 | Soldering flux capable of catalyzing at low temperature |
| CN114535866A (en) * | 2020-11-26 | 2022-05-27 | 海太半导体（无锡）有限公司 | Soldering flux capable of catalyzing at low temperature |
-
2009
- 2009-12-30 CN CN2009102389282A patent/CN102114582A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553859A (en) * | 2011-12-29 | 2012-07-11 | 荣盛建设工程有限公司 | Reinforcing steel bar welding method |
| CN102553859B (en) * | 2011-12-29 | 2016-01-20 | 荣盛建设工程有限公司 | A kind of steel bar welding method |
| CN109940311A (en) * | 2017-12-20 | 2019-06-28 | 海太半导体（无锡）有限公司 | A kind of low-temperature catalyzed scaling powder |
| CN113547253A (en) * | 2020-04-23 | 2021-10-26 | 海太半导体（无锡）有限公司 | Soldering flux capable of catalyzing at low temperature |
| CN114535866A (en) * | 2020-11-26 | 2022-05-27 | 海太半导体（无锡）有限公司 | Soldering flux capable of catalyzing at low temperature |
| CN113290297A (en) * | 2021-05-27 | 2021-08-24 | 贵州永红航空机械有限责任公司 | Brazing filler metal assembling method for brazing high-temperature alloy honeycomb silencer |
| CN113290297B (en) * | 2021-05-27 | 2023-04-07 | 贵州永红航空机械有限责任公司 | Brazing filler metal assembling method for brazing high-temperature alloy honeycomb silencer |
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Application publication date: 20110706 |