CN108202186A - A kind of aluminum welding tin paste and preparation method thereof - Google Patents
A kind of aluminum welding tin paste and preparation method thereof Download PDFInfo
- Publication number
- CN108202186A CN108202186A CN201611187698.8A CN201611187698A CN108202186A CN 108202186 A CN108202186 A CN 108202186A CN 201611187698 A CN201611187698 A CN 201611187698A CN 108202186 A CN108202186 A CN 108202186A
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- China
- Prior art keywords
- fluoride
- percentage
- weight
- welding
- scaling powder
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Classifications
-
- 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- 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
- B23K35/3601—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 with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of aluminum welding tin pastes and preparation method thereof, include the following steps：1) fluorination azanol 60 85%, metal active salt 5 30%, activating agent 1 5%, corrosion inhibiter 0.1 5% in percentage by weight, are weighed, is uniformly mixed, obtains scaling powder, it is spare；2) in percentage by weight, scaling powder 5 30%, glass putty 70 95%, the glass putty are added in into the scaling powder, and be stirred continuously during the addition process, after mixing up to the aluminum welding tin paste.The aluminum welding tin paste of the present invention has the following advantages：1. there is excellent effect for the welding that solder pre-coating cloth is required before welding or welds the more complicated object of shape, the rate of spread 70~90% is welded；2. there is good welding effect relative to the metal such as stainless steel of weldering more difficult for copper, aluminium etc. to some.
Description
Technical field
The present invention relates to paste soldering materials used in the solder of electronic unit, and in particular to it is special that one kind can meet
The solder of occasion aluminium is welded or other are compared with aluminum welding tin paste of welding of welding-resistant metal and preparation method thereof.
Background technology
Solder(ing) paste is solder used in electronic printed-circuit board reflow soldering.Solder(ing) paste is by ultra-fine tinbase spherical solder
What powder (20-75 μm) and paste paste-shaped welding combination (weld-aiding cream) mixed together.Weld-aiding cream generally comprise resin, thixotropic agent,
Solvent, activator, corrosion inhibiter and other auxiliary agents.There are two functions in solder(ing) paste for weld-aiding cream：One is to aid in welding, i.e., heated
When remove metal oxide, needed in weld-aiding cream addition activator；Second is that the carrier as solder powder, weld-aiding cream need to add resin,
Solvent, thixotropic agent etc. are deployed into suitable paste.Applied to traditional solder(ing) paste of electronic printed-circuit board welding, used tree
Fat material is usually rosin and its derivative, and also having been reported that it acts on essentially consisting in using epoxy resin makes solder(ing) paste have centainly
Viscosity and viscosity, that plays part removal oxide in the welding process helps weldering, and formed after the completion of welding without corruption
Erosion, nonconducting protective layer.But what rosin provided helps weldering activity insufficient, needed in scaling powder addition activator (such as：Succinic acid etc.
The organic amines such as organic acid, 2- ethyl imidazol(e)s), the Weldability to improve solder(ing) paste can also add in organohalogen compounds and live as reinforcement
Property.Since its special process needs, activator addition principle is traditional printed circuit board solder(ing) paste：
(1) the higher temperature just work of performance removal oxide activation strongly is selected to improve the shelf-life of solder(ing) paste
Agent, this kind of activator is usually very weak in the ability of room temperature or low temperature removal oxide, needs longer heating in the welding process
The welding effect that time could complete.
(2) the pad coating of printed circuit board is usually Cu, Au, Ag, Sn etc., and the oxide of these coating surfaces is opposite to be held
Easily removal, and the safeguard procedures such as coating OSP coatings, vacuum packaging, the usual table of printed circuit board is usually taken in printed circuit board
Existing relatively better soldering.And printed circuit board welding postwelding is typically disposable, it is desirable that have higher surface insulation electricity
Resistance, low corrosivity.Add organic acid (succinic acid, adipic acid etc.), organic amine (cyclohexylamine, triethanolamine, 2- ethyl imidazol(e)s
Deng), halogen compounds (diphenylguanidine hydrobromate, triethanolamine hydrobromate, dibromosuccinic acid etc.) can meet the requirements, these
The additive amount of activator need to be controlled.Strong acid (fluoboric acid, fluosilicic acid, phosphoric acid, organic phosphoric acid etc.) etc. has the work of deep-etching
Agent can not be added without addition.It is short that solder(ing) paste viscosity is will appear as without improvement directly addition strong corrosive activator
It is deteriorated in time, it is impossible to using mould printing, spot gluing equipment spot printing can not be used.For some in certain special welding occasions
Traditional solder stick soldering iron welding or immersed solder mode can not use, and solder pre-coating cloth or welding shape are required before for example welding
It is more complicated.Whens in addition also having metal such as stainless steel of some more difficult welderings for copper etc., present solder all can not
Meet these demands.
Invention content
The present invention proposes a kind of aluminum welding tin paste, solves more in the prior art in the traditional weldering of certain special welding occasions
Tin silk soldering iron welds or immersed solder mode can not use, and for copper during the metal of more difficult weldering, present solder all can not
The problem of meeting.
The technical proposal of the invention is realized in this way：A kind of aluminum welding tin paste, in percentage by weight, including scaling powder
5-30%, glass putty 70-95%；The wherein described scaling powder, in percentage by weight, including fluorination azanol 60-85%, gold
Belong to active salt 5-30%, activator 1-5%, corrosion inhibiter 0.1-5%.
As preferred technical solution, the scaling powder, in percentage by weight, including fluorination azanol 80%, gold
Belong to active salt 15%, activator 2%, corrosion inhibiter 3%.
As preferred technical solution, the fluorination azanol preparation method includes the following steps：
1) ethylenediamine 1-5%, ethanol amine 3-30%, diethanol amine 20-90% and three ethyl alcohol in percentage by weight, are taken
Amine 5-80% is uniformly mixed, obtains mixture；
2) it is 6.5-8 gained mixture to be neutralized to pH value with hydrofluoric acid；
3) above-mentioned neutralized reaction product is evaporated 3.5-4.5 hours at a temperature of 140-160 DEG C.
As preferred technical solution, the metal active salt is tin fluoride, stannous fluoride, stannous fluoboric acid, chlorination
One or more kinds of combinations in stannous, zinc fluoride, zinc fluoroborate, zinc chloride and bismuth chloride.
As preferred technical solution, the activator is diethylamine hydrochloride, triethylamine hydrochloride, lithium fluoride, fluorine
Change one or more kinds of combinations in sodium, magnesium fluoride and aluminum fluoride.
As preferred technical solution, the corrosion inhibiter is benzotriazole and/or piperazine.
The present invention also proposes a kind of method for preparing aluminum welding tin paste, includes the following steps：
1) in percentage by weight, weigh fluorination azanol 60-85%, metal active salt 5-30%, activator 1-5%,
Corrosion inhibiter 0.1-5% is uniformly mixed, obtains scaling powder, spare；
2) in percentage by weight, scaling powder 5-30%, glass putty 70-95% add in the tin into the scaling powder
Powder, and be stirred continuously during the addition process, after mixing up to the aluminum welding tin paste.
As preferred technical solution, the metal active salt is tin fluoride, stannous fluoride, stannous fluoboric acid, chlorination
One or more kinds of combinations in stannous, zinc fluoride, zinc fluoroborate, zinc chloride and bismuth chloride.
As preferred technical solution, the activator is diethylamine hydrochloride, triethylamine hydrochloride, lithium fluoride, fluorine
Change one or more kinds of combinations in sodium, magnesium fluoride and aluminum fluoride.
As preferred technical solution, the corrosion inhibiter is benzotriazole and/or piperazine.
Glass putty in the present invention can select commercially available glass putty according to the types of alloys of customer requirement.
By adopting the above-described technical solution, a kind of aluminum welding tin paste and preparation method thereof, including step：According to weight percent
Than meters, fluorination azanol 60-85%, metal active salt 5-30%, activator 1-5%, corrosion inhibiter 0.1-5% are weighed, is uniformly mixed,
Scaling powder is obtained, it is spare；In percentage by weight, scaling powder 5-30%, glass putty 70-95% are added in into the scaling powder
The glass putty, and be stirred continuously during the addition process, after mixing up to the aluminum welding tin paste；For requiring solder before welding
Pre-coating or the welding for welding the more complicated object of shape have excellent effect, welding rate of spread 70-90%；The present invention's
Aluminum welding tin paste has good welding effect to some relative to the metal such as stainless steel of weldering more difficult for copper, aluminium etc..
Specific embodiment
A kind of aluminum welding tin paste, in percentage by weight, including scaling powder 5-30%, glass putty 70-95%；It is wherein described
Scaling powder, in percentage by weight, including fluorination azanol 60-85%, metal active salt 5-30%, activator 1-5%, slow
Lose agent 0.1-5%.
The scaling powder, in percentage by weight, including fluorination azanol 80%, metal active salt 15%, activator
2%th, corrosion inhibiter 3%.
The preparation method of the fluorination azanol, includes the following steps：
1) ethylenediamine 1-5%, ethanol amine 3-30%, diethanol amine 20-90% and three ethyl alcohol in percentage by weight, are taken
Amine 5-80% is uniformly mixed, obtains mixture；
2) it is 6.5-8 gained mixture to be neutralized to pH value with hydrofluoric acid；
3) above-mentioned neutralized reaction product is evaporated 3.5-4.5 hours at a temperature of 140-160 DEG C.
The metal active salt is tin fluoride, stannous fluoride, stannous fluoboric acid, stannous chloride, zinc fluoride, fluoboric acid
One or more kinds of combinations in zinc, zinc chloride and bismuth chloride.
The activator is diethylamine hydrochloride, triethylamine hydrochloride, lithium fluoride, sodium fluoride, magnesium fluoride and aluminum fluoride
In one or more kinds of combinations.
The corrosion inhibiter is benzotriazole and/or piperazine.
A kind of method for preparing aluminum welding tin paste, includes the following steps：
1) in percentage by weight, weigh fluorination azanol 60-85%, metal active salt 5-30%, activator 1-5%,
Corrosion inhibiter 0.1-5% is uniformly mixed, obtains scaling powder, spare；
2) in percentage by weight, scaling powder 5-30%, glass putty 70-95% add in the tin into the scaling powder
Powder, and be stirred continuously during the addition process, after mixing up to the aluminum welding tin paste.
The metal active salt is tin fluoride, stannous fluoride, stannous fluoboric acid, stannous chloride, zinc fluoride, fluoboric acid
One or more kinds of combinations in zinc, zinc chloride and bismuth chloride.
The activator is diethylamine hydrochloride, triethylamine hydrochloride, lithium fluoride, sodium fluoride, magnesium fluoride and aluminum fluoride
In one or more kinds of combinations.
The corrosion inhibiter is benzotriazole and/or piperazine.
First, it is fluorinated the preparation of azanol
Embodiment 1
The preparation method of azanol is fluorinated, it includes the following steps：
1) ethylenediamine 1%, ethanol amine 30%, diethanol amine 64% and triethanolamine 5% in percentage by weight, are taken,
It is mixed evenly, obtains mixture；
2) it is 6.5 gained mixture to be neutralized to pH value with hydrofluoric acid；
3) above-mentioned neutralized reaction product at a temperature of 140 DEG C is evaporated 4.5 hours, to remove moisture therein, prevents from subsequently welding
Connect splashing.
Embodiment 2
The preparation method of azanol is fluorinated, it includes the following steps：
1) ethylenediamine 5%, ethanol amine 3%, diethanol amine 84% and triethanolamine 8% in percentage by weight, are taken, is mixed
Conjunction stirs evenly, and obtains mixture；
2) it is 7 gained mixture to be neutralized to pH value with hydrofluoric acid；
3) above-mentioned neutralized reaction product at a temperature of 160 DEG C is evaporated 3.5 hours, to remove moisture therein, prevents from subsequently welding
Connect splashing.
Embodiment 3
The preparation method of azanol is fluorinated, it includes the following steps：
1) ethylenediamine 2%, ethanol amine 3%, diethanol amine 20% and triethanolamine 75% in percentage by weight, are taken,
It is mixed evenly, obtains mixture；
2) it is 8 gained mixture to be neutralized to pH value with hydrofluoric acid；
3) above-mentioned neutralized reaction product at a temperature of 150 DEG C is evaporated 4 hours, to remove moisture therein, prevents from subsequently welding
It splashes.
Claims (4)
1. a kind of aluminum welding tin paste, it is characterised in that：In percentage by weight, including scaling powder 5-30%, glass putty 70-
95%；The wherein described scaling powder, in percentage by weight, including fluorination azanol 60-85%, metal active salt 5-30%,
Activator 1-5%, corrosion inhibiter 0.1-5%；The preparation method of the fluorination azanol, includes the following steps：
1) ethylenediamine 1-5%, ethanol amine 3-30%, diethanol amine 20-90% and triethanolamine 5- in percentage by weight, are taken
80%, it is uniformly mixed, obtains mixture；
2) it is 6.5-8 gained mixture to be neutralized to PH with hydrofluoric acid；
3) above-mentioned neutralized reaction product is evaporated 3.5-4.5 hours at a temperature of 140-160 DEG C.
2. a kind of aluminum welding tin paste as described in claim 1, it is characterised in that：The scaling powder, in percentage by weight,
Including fluorination azanol 80%, metal active salt 15%, activator 2%, corrosion inhibiter 3%.
3. a kind of aluminum welding tin paste as described in claim 1, it is characterised in that：The metal active salt is tin fluoride, fluorination
One or more kinds of groups in stannous, stannous fluoboric acid, stannous chloride, zinc fluoride, zinc fluoroborate, zinc chloride and bismuth chloride
It closes.
4. a kind of aluminum welding tin paste as described in claim 1, it is characterised in that：The activator is diethylamine hydrochloride, three
One or more kinds of combinations in ethylamine hydrochloride, lithium fluoride, sodium fluoride, magnesium fluoride and aluminum fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611187698.8A CN108202186A (en) | 2016-12-20 | 2016-12-20 | A kind of aluminum welding tin paste and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611187698.8A CN108202186A (en) | 2016-12-20 | 2016-12-20 | A kind of aluminum welding tin paste and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108202186A true CN108202186A (en) | 2018-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611187698.8A Pending CN108202186A (en) | 2016-12-20 | 2016-12-20 | A kind of aluminum welding tin paste and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055797A (en) * | 2018-08-29 | 2018-12-21 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of aluminium alloy compound refining agent |
-
2016
- 2016-12-20 CN CN201611187698.8A patent/CN108202186A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109055797A (en) * | 2018-08-29 | 2018-12-21 | 佛山朝鸿新材料科技有限公司 | A kind of preparation method of aluminium alloy compound refining agent |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180626 |
|
| WD01 | Invention patent application deemed withdrawn after publication |