CN107199417A - A kind of scaling powder - Google Patents
A kind of scaling powder Download PDFInfo
- Publication number
- CN107199417A CN107199417A CN201710508507.1A CN201710508507A CN107199417A CN 107199417 A CN107199417 A CN 107199417A CN 201710508507 A CN201710508507 A CN 201710508507A CN 107199417 A CN107199417 A CN 107199417A
- Authority
- CN
- China
- Prior art keywords
- scaling powder
- parts
- acid
- powder according
- rosin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- B23K35/36—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
- B23K35/3612—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 organic compounds as principal constituents
- B23K35/3613—Polymers, e.g. resins
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The present invention relates to a kind of scaling powder, belong to technical field of welding materials.The present invention is reacted water-white rosin using sucrose, obtained modified water galbanum, both good spreading wetting had been ensured, again without too big corrosivity, and maleic rosin, antioxidant, thixotropic agent, obtained scaling powder after the additive compounds such as surfactant, with good activity, solder joint is full after Reflow Soldering, the solder joint of formation is full, light, rule, in addition, also there is low-corrosiveness, and the present invention is primary raw material using maleic rosin and modified water galbanum, its dissolubility with solvent is good, do not crystallize, good film-forming property, and with excellent heat endurance, with good wettability, help weldering activity high.
Description
Technical field
The present invention relates to a kind of scaling powder, belong to technical field of welding materials.
Background technology
Scaling powder is a kind of important process material in electronic enterprises, and the quality of its quality not only has influence on electronics
Controlled in terms of efficiency, qualification rate, cost in electric equipment products production process, and the follow-up of electric equipment products for a long time may be used
Key effect is played by property.Scaling powder is a kind of material being uniformly mixed by plurality of raw materials, and it is mainly by solvent, activation
Agent, film forming agent, surfactant etc. are constituted.When the raw material using different ratio, using different preparation methods, scaling powder is by table
Reveal different performance and long-term reliability.The effect of scaling powder is mainly manifested in：Remove oxide, reduction welded material
Matter surface tension, prevent from reoxidizing, aid in heat transfer, removing and be soldered several sides such as material surface and oil contaminant, increase bonding area
Face.
No clean type scaling powder is now more common, mainly including low solid-state and high solid-state version, the basic phase of both properties
Together, the simply difference of solids content.Rosin has been widely used as scaling powder with base resin, Chinese patent, electronics
Industrial private-use class modified rosin and technique, publication number CN1065474A disclose a kind of electronics rosin, i.e. resin, refined
Hydrogenated rosin, alcohol-soluble Lewisol 28 and newtrex compounding are made, and meet soldering liquid flux (abietyl)
The requirements for the solder(ing) paste being made with used in electronic industry resin core welding wire and rosin for base-material.
But the scaling powder that rosin is prepared easily is decomposed at high temperature, causes film forming uneven, solder joint is irregular, and
Help that weldering activity is low after use time length, a kind of high-temperature stable, film forming be uniform, solder joint is regular it would therefore be highly desirable to find, and activity is high
Scaling powder.
The content of the invention
The technical problems to be solved by the invention：Easily decompose, cause at high temperature for the scaling powder that rosin is prepared
Film forming is uneven, and solder joint is irregular, and the problem of weldering is active low is helped after use time length there is provided a kind of scaling powder.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of scaling powder, it is characterised in that：Count by weight, including following raw material：20~30 parts of maleic rosins, 5~10 parts
Modified water galbanum, 45~50 parts of organic solvents, 0.3~0.5 part of antioxidant, 4~6 parts of thixotropic agent, 5~10 parts of surface-actives
Agent, 0.8~1.5 part of corrosion inhibiter, 3~5 parts of thickeners and 5~7 parts of organic acids；
The preparation method of described modified water galbanum is：
（1）Weigh water-white rosin to add in reactor, be warming up to 105~110 DEG C, the vacuum being evacuated in reactor is 30
~50Pa, vacuumizes and 128~145 DEG C is warming up to after 40~50min, then to added in reactor water-white rosin quality 1.2~
Sucrose after 1.4 times of drying, and respectively 3~5 additions, insulated and stirred are cooled to room temperature after reacting 3~5h, and discharging to react
Thing；
（2）In mass ratio 1:2, reactant is mixed with n-butanol, stirring mixing 15~20min after add reactant quality 10~
Stratification after 12% lactic acid, 2~3h of stirring reaction, filters to obtain filter residue；
（3）Filter residue is washed after 2~4 times with n-butanol, in mass ratio 1:5, the filter residue of washing is added in absolute ethyl alcohol, heating
To 60~70 DEG C, filtered while hot after 30~50s of stirring, obtain filtrate, filtered after distillation under pressure, obtain filter cake, you can obtain modified water
Galbanum.
Described organic solvent is 1,3- propane diols, dibutyl maleate, NHD, a contracting dipropyl two
One or more in alcohol.
Described antioxidant is one or more in benzenediol, ascorbic acid, tert-butylhydroquinone.
Described thixotropic agent is the one or more in rilanit special, ethylene bis stearamide and nano silicon.
Described surfactant is one in lauryl sodium sulfate, alkyl-glucoside, AEO
Plant or a variety of.
Described corrosion inhibiter is one kind or many in 1 benzyl 2 methyl imidazole, phenylpropyl alcohol triazole, TTA
Kind.
Described thickener is the one or more in sodium carboxymethylcellulose, agar, xanthans and guar gum.
Described organic acid is the one or more in stearic acid, ethanedioic acid and lactic acid.
The present invention is compared with other method, and advantageous effects are：
（1）The present invention is primary raw material using maleic rosin and modified water galbanum, and its dissolubility with solvent is good, do not crystallize,
Good film-forming property, and with excellent heat endurance, with good wettability, help weldering activity high；
（2）The present invention is reacted water-white rosin using sucrose, obtained modified water galbanum, has both ensured good to sprawl profit
It is moist, again without too big corrosivity, and obtained scaling powder after the additive compound such as antioxidant, thixotropic agent, with good
Solder joint is full after activity, Reflow Soldering, and the solder joint of formation is full, bright, rule, in addition, also having the advantages that low-corrosiveness.
Embodiment
Weigh water-white rosin to add in reactor, be warming up to 105~110 DEG C, the vacuum being evacuated in reactor is
30~50Pa, vacuumizes and 128~145 DEG C is warming up to after 40~50min, then to adding water-white rosin quality 1.2 in reactor
The sucrose of~1.4 times of drying, and respectively 3~5 additions, insulated and stirred are cooled to room temperature after reacting 3~5h, and discharging to react
Thing；In mass ratio 1:2, reactant is mixed with n-butanol, reactant quality 10~12% is added after 15~20min of stirring mixing
Stratification after lactic acid, 2~3h of stirring reaction, filters to obtain filter residue；Filter residue is washed after 2~4 times with n-butanol, in mass ratio 1:
5, the filter residue of washing is added in absolute ethyl alcohol, is filtered while hot after being heated to 60~70 DEG C, 30~50s of stirring, is obtained filtrate, pressurize
Filtered after distillation, obtain filter cake, you can obtain modified water galbanum.Count by weight, choose respectively 20~30 parts of maleic rosins,
5~10 parts of modified water galbanums, 45~50 parts of organic solvents, 0.3~0.5 part of antioxidant, 4~6 parts of thixotropic agent, 5~10 parts
Surfactant, 0.8~1.5 part of corrosion inhibiter, 3~5 parts of thickeners and 5~7 parts of organic acids, are stirred with 800~1200r/min rotating speeds
20~40min of mixing is mixed, lead-free soldering flux is obtained after stirring.
Described organic solvent is 1,3- propane diols, dibutyl maleate, NHD, a contracting dipropyl two
One or more in alcohol.Described antioxidant is one or more in benzenediol, ascorbic acid, tert-butylhydroquinone.
Described thixotropic agent is the one or more in rilanit special, ethylene bis stearamide and nano silicon.Described table
Face activating agent is the one or more in lauryl sodium sulfate, alkyl-glucoside, AEO.Described is slow
Erosion agent is the one or more in 1 benzyl 2 methyl imidazole, phenylpropyl alcohol triazole, TTA.Described thickener
For the one or more in sodium carboxymethylcellulose, agar, xanthans and guar gum.Described organic acid is stearic acid, second two
One or more in acid and lactic acid.
Example 1
Weigh water-white rosin to add in reactor, be warming up to 105 DEG C, the vacuum being evacuated in reactor is 30Pa, take out true
128 DEG C are warming up to after empty 40min, then to the sucrose added in reactor after water-white 1.2 times of drying of rosin quality, and divides 3 batches
Add, insulated and stirred reaction 3h is cooled to room temperature, discharge to obtain reactant after reaction；In mass ratio 1:2, by reactant and positive fourth
Alcohol is mixed, and is added stratification after the lactic acid of reactant quality 10%, stirring reaction 2h after stirring mixing 15min, is filtered to obtain filter residue；
Filter residue is washed into 2 times, in mass ratio 1 with n-butanol:5, the filter residue after washing is added in absolute ethyl alcohol, 60 DEG C is heated to, stirs
Mix and filtered while hot after 30s, obtain filtrate, filtered after distillation under pressure, obtain filter cake, you can obtain modified water galbanum, by weight
Meter, choose respectively 20 parts of maleic rosins, 5 parts of modified water galbanums, 45 parts of organic solvents, 0.3 part of antioxidant, 4 parts of thixotropic agent,
5 parts of surfactants, 0.8 part of corrosion inhibiter, 3 parts of thickeners and 5 parts of organic acids, with 800r/min rotating speeds stirring mixing 20min, are stirred
Lead-free soldering flux is obtained after mixing.Described organic solvent be 1,3- propane diols, dibutyl maleate, NHD,
One or more in dipropylene glycol.Described antioxidant is one in benzenediol, ascorbic acid, tert-butylhydroquinone
Plant or a variety of.Described thixotropic agent is the one or more in rilanit special, ethylene bis stearamide and nano silicon.
Described surfactant is the one or more in lauryl sodium sulfate, alkyl-glucoside, AEO.
Described corrosion inhibiter is the one or more in 1 benzyl 2 methyl imidazole, phenylpropyl alcohol triazole, TTA.It is described
Thickener be sodium carboxymethylcellulose, agar, xanthans and guar gum in one or more.Described organic acid is tristearin
One or more in acid, ethanedioic acid and lactic acid.
Example 2
Weigh water-white rosin to add in reactor, be warming up to 108 DEG C, the vacuum being evacuated in reactor is 40Pa, take out true
130 DEG C are warming up to after empty 45min, then to the sucrose added in reactor after water-white 1.3 times of drying of rosin quality, and divides 4 batches
Add, insulated and stirred reaction 4h is cooled to room temperature, discharge to obtain reactant after reaction；In mass ratio 1:2, by reactant and positive fourth
Alcohol is mixed, and adds stratification after the lactic acid of reactant quality 11%, stirring reaction 2.5h after stirring mixing 17min, filtering to filter
Slag；Filter residue is washed into 3 times, in mass ratio 1 with n-butanol:5, the filter residue after washing is added in absolute ethyl alcohol, 65 DEG C are heated to,
Filtered while hot after stirring 40s, obtain filtrate, filtered after distillation under pressure, obtain filter cake, you can obtain modified water galbanum, by weight
Number meter, chooses 25 parts of maleic rosins, 7 parts of modified water galbanums, 47 parts of organic solvents, 0.4 part of antioxidant, 5 parts of thixotropings respectively
Agent, 8 parts of surfactants, 1.2 parts of corrosion inhibiter, 4 parts of thickeners and 6 parts of organic acids, are stirred with 1000r/min rotating speeds and mixed
30min, obtains lead-free soldering flux after stirring.
Described organic solvent is 1,3- propane diols, dibutyl maleate, NHD, a contracting dipropyl two
One or more in alcohol.Described antioxidant is one or more in benzenediol, ascorbic acid, tert-butylhydroquinone.
Described thixotropic agent is the one or more in rilanit special, ethylene bis stearamide and nano silicon.Described table
Face activating agent is the one or more in lauryl sodium sulfate, alkyl-glucoside, AEO.Described is slow
Erosion agent is the one or more in 1 benzyl 2 methyl imidazole, phenylpropyl alcohol triazole, TTA.Described thickener
For the one or more in sodium carboxymethylcellulose, agar, xanthans and guar gum.Described organic acid is stearic acid, second two
One or more in acid and lactic acid.
Example 3
Weigh water-white rosin to add in reactor, be warming up to 110 DEG C, the vacuum being evacuated in reactor is 50Pa, take out true
145 DEG C are warming up to after empty 50min, then to the sucrose added in reactor after water-white 1.4 times of drying of rosin quality, and divides 5 batches
Add, insulated and stirred reaction 5h is cooled to room temperature, discharge to obtain reactant after reaction；In mass ratio 1:2, by reactant and positive fourth
Alcohol is mixed, and is added stratification after the lactic acid of reactant quality 12%, stirring reaction 3h after stirring mixing 20min, is filtered to obtain filter residue；
Filter residue is washed into 4 times, in mass ratio 1 with n-butanol:5, the filter residue after washing is added in absolute ethyl alcohol, 70 DEG C is heated to, stirs
Mix and filtered while hot after 50s, obtain filtrate, filtered after distillation under pressure, obtain filter cake, you can obtain modified water galbanum, by weight
Meter, chooses 30 parts of maleic rosins, 10 parts of modified water galbanums, 50 parts of organic solvents, 0.5 part of antioxidant, 6 parts of thixotropings respectively
Agent, 10 parts of surfactants, 1.5 parts of corrosion inhibiter, 5 parts of thickeners and 7 parts of organic acids, are stirred with 1200r/min rotating speeds and mixed
40min, obtains lead-free soldering flux after stirring.Described organic solvent is 1,3- propane diols, dibutyl maleate, polyethylene glycol
One or more in dimethyl ether, dipropylene glycol.Described antioxidant is benzenediol, ascorbic acid, tertiary butyl to benzene
It is one or more in diphenol.Described thixotropic agent is one in rilanit special, ethylene bis stearamide and nano silicon
Plant or a variety of.Described surfactant is one in lauryl sodium sulfate, alkyl-glucoside, AEO
Plant or a variety of.Described corrosion inhibiter be 1 benzyl 2 methyl imidazole, phenylpropyl alcohol triazole, TTA in one kind or
It is a variety of.Described thickener is the one or more in sodium carboxymethylcellulose, agar, xanthans and guar gum.Described has
Machine acid is the one or more in stearic acid, ethanedioic acid and lactic acid.
Reference examples：The scaling powder of Guangzhou Electron Material Co., Ltd production.
The scaling powder of example and reference examples is prepared into soldering paste and testing inspection, specific preparation method is as follows：
It is 88 by the mass fraction ratio of welding powder and scaling powder:12 mixing, the soldering paste prepared after mixing, wherein welding powder are from Suzhou
You Nuo electronic materials Science and Technology Ltd. buys, and composition is Sn3.0Ag0.5Cu。
The soldering paste prepared is detected, specific testing result is shown in Table 1.
Table 1
As shown in Table 1, obtained scaling powder of the invention prepares good film-forming property, with good wettability, helps weldering activity
Height, obtained soldering paste has good thixotropic property and viscosity number, and its printing performance is excellent, there is preferable demolding performace.
Claims (8)
1. a kind of scaling powder, it is characterised in that：Count by weight, including following raw material：20~30 parts of maleic rosins, 5~10
Part modified water galbanum, 45~50 parts of organic solvents, 0.3~0.5 part of antioxidant, 4~6 parts of thixotropic agent, 5~10 parts of surfaces are lived
Property agent, 0.8~1.5 part of corrosion inhibiter, 3~5 parts of thickeners and 5~7 parts of organic acids；
The preparation method of described modified water galbanum is：
Weigh water-white rosin to add in reactor, be warming up to 105~110 DEG C, be evacuated to the vacuum in reactor for 30~
50Pa, vacuumizes and 128~145 DEG C is warming up to after 40~50min, then to adding water-white rosin quality 1.2~1.4 in reactor
Sucrose after drying again, and respectively 3~5 additions, insulated and stirred are cooled to room temperature after reacting 3~5h, and discharge to obtain reactant；
In mass ratio 1:2, reactant is mixed with n-butanol, reactant quality 10~12% is added after 15~20min of stirring mixing
Stratification after lactic acid, 2~3h of stirring reaction, filters to obtain filter residue；
Filter residue is washed after 2~4 times with n-butanol, in mass ratio 1:5, the filter residue of washing is added in absolute ethyl alcohol, is heated to
60~70 DEG C, filter while hot after 30~50s of stirring, obtain filtrate, filtered after distillation under pressure, obtain filter cake, you can obtain being modified water-white
Rosin.
2. a kind of scaling powder according to claim 1, it is characterised in that：Described organic solvent is 1,3- propane diols, suitable
One or more in butene dioic acid dibutyl ester, NHD, dipropylene glycol.
3. a kind of scaling powder according to claim 1, it is characterised in that：Described antioxidant is benzenediol, Vitamin C
It is one or more in acid, tert-butylhydroquinone.
4. a kind of scaling powder according to claim 1, it is characterised in that：Described thixotropic agent is rilanit special, ethylene
One or more in bis-stearamides and nano silicon.
5. a kind of scaling powder according to claim 1, it is characterised in that：Described surfactant is dodecyl sulphate
One or more in sodium, alkyl-glucoside, AEO.
6. a kind of scaling powder according to claim 1, it is characterised in that：Described corrosion inhibiter is 1- benzyl -2- methyl miaows
One or more in azoles, phenylpropyl alcohol triazole, TTA.
7. a kind of scaling powder according to claim 1, it is characterised in that：Described thickener be sodium carboxymethylcellulose,
One or more in agar, xanthans and guar gum.
8. a kind of scaling powder according to claim 1, it is characterised in that：Described organic acid be stearic acid, ethanedioic acid and
One or more in lactic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508507.1A CN107199417A (en) | 2017-06-28 | 2017-06-28 | A kind of scaling powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710508507.1A CN107199417A (en) | 2017-06-28 | 2017-06-28 | A kind of scaling powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107199417A true CN107199417A (en) | 2017-09-26 |
Family
ID=59908471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710508507.1A Withdrawn CN107199417A (en) | 2017-06-28 | 2017-06-28 | A kind of scaling powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107199417A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695561A (en) * | 2017-11-03 | 2018-02-16 | 张家港市东大工业技术研究院 | A kind of spray printing low viscosity leadless soldering tin paste and its preparation technology |
| CN107891231A (en) * | 2017-11-27 | 2018-04-10 | 苏州锐耐洁电子科技新材料有限公司 | Smoke-less formulations of solder flux |
| CN108161280A (en) * | 2018-02-07 | 2018-06-15 | 合肥安力电力工程有限公司 | A kind of lead-free solder scaling powder and preparation method thereof |
| CN108393611A (en) * | 2018-04-25 | 2018-08-14 | 苏州锐耐洁电子科技新材料有限公司 | A kind of electronics scaling powder |
| CN109048121A (en) * | 2018-09-08 | 2018-12-21 | 佛山皖和新能源科技有限公司 | A kind of photovoltaic module scaling powder |
| CN111716038A (en) * | 2019-03-20 | 2020-09-29 | 天津市同鑫泰钢管制造有限公司 | Anti-cracking soldering flux for welding of long-distance transportation spiral steel pipe |
| CN115365703A (en) * | 2022-08-19 | 2022-11-22 | 大连海外华昇电子科技有限公司 | Water-soluble soldering flux and preparation method thereof |
| CN116787023A (en) * | 2023-08-01 | 2023-09-22 | 广东中实金属有限公司 | Preformed soldering lug and preparation method thereof |
-
2017
- 2017-06-28 CN CN201710508507.1A patent/CN107199417A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107695561A (en) * | 2017-11-03 | 2018-02-16 | 张家港市东大工业技术研究院 | A kind of spray printing low viscosity leadless soldering tin paste and its preparation technology |
| CN107891231A (en) * | 2017-11-27 | 2018-04-10 | 苏州锐耐洁电子科技新材料有限公司 | Smoke-less formulations of solder flux |
| CN108161280A (en) * | 2018-02-07 | 2018-06-15 | 合肥安力电力工程有限公司 | A kind of lead-free solder scaling powder and preparation method thereof |
| CN108393611A (en) * | 2018-04-25 | 2018-08-14 | 苏州锐耐洁电子科技新材料有限公司 | A kind of electronics scaling powder |
| CN109048121A (en) * | 2018-09-08 | 2018-12-21 | 佛山皖和新能源科技有限公司 | A kind of photovoltaic module scaling powder |
| CN111716038A (en) * | 2019-03-20 | 2020-09-29 | 天津市同鑫泰钢管制造有限公司 | Anti-cracking soldering flux for welding of long-distance transportation spiral steel pipe |
| CN115365703A (en) * | 2022-08-19 | 2022-11-22 | 大连海外华昇电子科技有限公司 | Water-soluble soldering flux and preparation method thereof |
| CN116787023A (en) * | 2023-08-01 | 2023-09-22 | 广东中实金属有限公司 | Preformed soldering lug and preparation method thereof |
| CN116787023B (en) * | 2023-08-01 | 2023-12-19 | 广东中实金属有限公司 | Preformed soldering lug and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107199417A (en) | A kind of scaling powder | |
| CN100528462C (en) | Low-rosin cleaning-free scaling powder for SnAgCu series lead-free soldering paste and preparation method thereof | |
| CN100528461C (en) | Non-rosin cleaning-free scaling powder for tin-lead soldering paste and preparation method thereof | |
| CN103008921B (en) | Halogen-free scaling powder used for lead-free solder paste and preparation method thereof | |
| CN101972906B (en) | Lead-free environmentally friendly soldering flux and preparation method thereof | |
| CN100479975C (en) | Low-rosin cleaning-free scaling powder for tin-lead soldering paste and preparation method thereof | |
| CN102513733A (en) | Flux | |
| CN103286477A (en) | Soldering flux for lead-free solder and preparation method of soldering flux | |
| CN105798482B (en) | A kind of no-clean scaling powder of Halogen and preparation method thereof | |
| CN102357746A (en) | Low-content modified rosin halogen-free soldering flux for lead-free solder wires | |
| CN113528253B (en) | Composition for cleaning LiF material on surfaces of OLED mask and crucible | |
| CN104175024A (en) | High-performance lead-free halogen-free soldering flux for soldering paste and preparing method of soldering flux | |
| CN102585166A (en) | Active resin composition, surface mounting method and printed wiring board | |
| CN102513735A (en) | Flux paste for high-bismuth content solder paste and preparation method thereof | |
| CN105199859B (en) | A kind of semiconductor surface cleaning agent and preparation method thereof | |
| CN110328467A (en) | A kind of scaling powder and preparation method thereof | |
| CN106782750A (en) | It is a kind of to promote burning type electric slurry and preparation method thereof certainly | |
| CN108465977A (en) | A kind of non-halide cleaning-free welding flux and preparation method thereof | |
| CN106251934B (en) | Hyperfine electronic printing slurry | |
| CN104942481A (en) | Preparation method of rosin derivative for electronic welding | |
| CN102528328A (en) | Lead-free solder paste for needle cylinder and preparation method | |
| CN102528329B (en) | Halogen-free and lead-free solder paste and preparation method | |
| CN102909493A (en) | Soldering flux | |
| CN103801857A (en) | No-clean soldering flux and preparation method of no-clean soldering flux | |
| CN108555474B (en) | Halogen-free environment-friendly lead-free tin paste and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170926 |
|
| WW01 | Invention patent application withdrawn after publication |