CN101332548B - Halogen-free extinction welding flux - Google Patents
Halogen-free extinction welding flux Download PDFInfo
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- CN101332548B CN101332548B CN2008100271116A CN200810027111A CN101332548B CN 101332548 B CN101332548 B CN 101332548B CN 2008100271116 A CN2008100271116 A CN 2008100271116A CN 200810027111 A CN200810027111 A CN 200810027111A CN 101332548 B CN101332548 B CN 101332548B
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- soldering flux
- rosin
- extinction
- halogen
- free
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Abstract
The invention relates to the technical field of a soldering flux, in particular to a halogen-free extinction soldering flux. The soldering flux of the invention comprises 4.0 - 6.0% of hydrogenated rosin, 1.0 - 2.2% of butane diacid, 1.5 - 2.0% of palmitic acid, 1.5 - 2.0% of tert-butyl benzoic acid and 87.8 - 92% of isopropyl alcohol; the soldering flux takes organic acids to replace hydrochloride, which not only leads the soldering flux to meet the requirements of welding activity, but also forms an extinction film under the combined action of the macromolecular organic acids and rosin at the softening point; as the rosin can not be easily oxidized and the color of the rosin can not be easily darkened, the soldering flux can be stored for a longer time; meanwhile, as the soldering flux contains a macromolecule organic acid, namely, tert-butyl benzoic acid, the soldering flux has better property in the secondary welding and better welding quality, and can effectively reduce electromigration probability; when the electromigration is tested, the probability of impedance drop does not occur.
Description
Technical field:
The present invention relates to the scaling powder technical field, refer in particular to a kind of halogen-free extinction welding flux.
Background technology:
Traditional extinction type scaling powder all is to cooperate with delustering agent by hydrochloride, the welding back forms a skim on solder joint, thereby reach extinction effect, the characteristics of this type of extinction welding flux are because the existence of hydrochloride wherein, can quicken the oxidation of rosin, make the appearance color of scaling powder deepen, be unfavorable for stock control, simultaneously, also increased the cost of quality control, in welding process, halide ion can remain on the circuit board, for the circuit board of silver-plated processing, exists under the voltage condition, electromigration easily takes place in the halide ion that remains on the circuit board, and the electric property of circuit board is descended.
Summary of the invention:
The objective of the invention is to provides a kind of halogen-free extinction welding flux at the deficiencies in the prior art, its slowed down oxidation of rosin, the appearance color of scaling powder is stable, and the scaling powder storage time is longer, reduce the quality control cost, and can effectively reduce the electromigratory probability of generation.
For achieving the above object, invention is achieved through the following technical solutions:
A kind of halogen-free extinction welding flux, it comprises the composition of following weight ratio,
Foral 4.0～6.0%
Succinic acid 1.0～2.2%
Palmitic acid 1.5～2.0%
P-tert-butyl benzoic acid 1.5～2.0%
Isopropyl alcohol 87.8～92%.
Beneficial effect of the present invention: scaling powder of the present invention comprises 4.0～6.0% Foral, 1.0～2.2% succinic acid, 1.5～2.0% palmitic acid, 1.5～2.0% p-tert-butyl benzoic acid and 87.8～92% isopropyl alcohol, it uses organic acid to replace hydrochloride, thereby make scaling powder both satisfy the active requirement of welding, acting in conjunction by macromolecule organic acid and softening-point rosin forms matt film again, compare with present halogen extinction type scaling powder, scaling powder of the present invention is because rosin is difficult for oxidized, the rosin color is difficult for deepening, storage time is longer, in single wave soldering connects, welding quality is identical with traditional shape extinction welding flux, in the double wave welding, owing to contain the macromolecule organic acid p-tert-butyl benzoic acid in the scaling powder, show better when secondary welding, welding quality is better, and can effectively reduce the electromigratory probability of generation, when carrying out electro-migration testing, the phenomenon that impedance descends can not appear.
The specific embodiment:
A kind of halogen-free extinction welding flux, it comprises following composition, be by weight,
Main Ingredients and Appearance content
Foral 4.0～6.0%
Succinic acid 1.0～2.2%
Palmitic acid 1.5～2.0%
P-tert-butyl benzoic acid 1.5～2.0%
Isopropyl alcohol 87.8～92%.
Following is preferred embodiment of the present invention, be by weight,
Main Ingredients and Appearance content
Foral 6.0%
Succinic acid 2.2%
Palmitic acid 2.0%
P-tert-butyl benzoic acid 2.0%
Isopropyl alcohol 87.8%.
The above only is the preferred embodiment of invention, so all equivalences of doing according to the described structure of application for a patent for invention scope, feature and principle change or modify, is included in the application for a patent for invention scope.
Claims (1)
1. halogen-free extinction welding flux, it is characterized in that: it comprises following composition, be by weight,
Foral 6.0%
Succinic acid 2.2%
Palmitic acid 2.0%
P-tert-butyl benzoic acid 2.0%
Isopropyl alcohol 87.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100271116A CN101332548B (en) | 2008-03-31 | 2008-03-31 | Halogen-free extinction welding flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100271116A CN101332548B (en) | 2008-03-31 | 2008-03-31 | Halogen-free extinction welding flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101332548A CN101332548A (en) | 2008-12-31 |
| CN101332548B true CN101332548B (en) | 2010-07-21 |
Family
ID=40195572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100271116A Active CN101332548B (en) | 2008-03-31 | 2008-03-31 | Halogen-free extinction welding flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101332548B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829864B (en) * | 2010-05-07 | 2013-01-16 | 常州大学 | Delustering agent for eliminating glossy of welding spots in soldering flux |
| CN113249034B (en) * | 2021-05-10 | 2022-07-01 | 广东风华高新科技股份有限公司 | Film covering agent and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047238A (en) * | 1989-05-09 | 1990-11-28 | 化学工业部晨光化工研究院一分院 | A kind of flux assistant for tin soldering of printed circuit board |
| CN1110205A (en) * | 1994-04-06 | 1995-10-18 | 化学工业部晨光化工研究院成都分院 | Non-halogen non-rosin type low solid content non-cleaning scaling powder |
| US5932030A (en) * | 1995-06-19 | 1999-08-03 | Sony Corporation | Flux for soldering using solder preforms |
| CN1445048A (en) * | 2002-03-20 | 2003-10-01 | 田村化研株式会社 | Solder without lead and paste solder composite |
| CN1562554A (en) * | 2004-03-30 | 2005-01-12 | 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 |
-
2008
- 2008-03-31 CN CN2008100271116A patent/CN101332548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1047238A (en) * | 1989-05-09 | 1990-11-28 | 化学工业部晨光化工研究院一分院 | A kind of flux assistant for tin soldering of printed circuit board |
| CN1110205A (en) * | 1994-04-06 | 1995-10-18 | 化学工业部晨光化工研究院成都分院 | Non-halogen non-rosin type low solid content non-cleaning scaling powder |
| US5932030A (en) * | 1995-06-19 | 1999-08-03 | Sony Corporation | Flux for soldering using solder preforms |
| CN1445048A (en) * | 2002-03-20 | 2003-10-01 | 田村化研株式会社 | Solder without lead and paste solder composite |
| CN1562554A (en) * | 2004-03-30 | 2005-01-12 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101332548A (en) | 2008-12-31 |
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| C06 | Publication | ||
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| ASS | Succession or assignment of patent right |
Owner name: SUZHOU YOUNUO ELECTRONIC MATERIALS TECHNOLOGY CO., Free format text: FORMER OWNER: DONGGUAN YOUNUO ELECTRONIC WELDING MATERIAL CO., LTD. Effective date: 20100419 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 523829 DONGGUAN YOUNUO ELECTRONIC WELDING MATERIAL CO., LTD., TAIGONGLING VILLAGE, DALINGSHAN TOWN, DONGGUAN CITY, GUANGDONG PROVINCE TO: 215152 NO.8, AIMIN ROAD, XIANGCHENG DISTRICT, SUZHOU CITY, JIANGSU PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20100419 Address after: 215152 No. 8 Aimin Road, Suzhou, Jiangsu, Xiangcheng District Applicant after: SUZHOU YOUNUO ELECTRONIC MATERIAL SCIENCE & TECHNOLOGY CO., LTD. Address before: 523829 Guangdong Province, Dongguan City Dalingshan Town of Tai Gong Ling Cun Dongguan uneed electronic welding material Co. Ltd. Applicant before: Dongguan Eunow Electronic Welding Material Co., Ltd. |
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