CN109161893A - Efficient tin stripper - Google Patents
Efficient tin stripper Download PDFInfo
- Publication number
- CN109161893A CN109161893A CN201811102204.0A CN201811102204A CN109161893A CN 109161893 A CN109161893 A CN 109161893A CN 201811102204 A CN201811102204 A CN 201811102204A CN 109161893 A CN109161893 A CN 109161893A
- Authority
- CN
- China
- Prior art keywords
- tin stripper
- efficient tin
- tin
- additive
- urea
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/30—Acidic compositions for etching other metallic material
Abstract
The invention discloses a kind of efficient tin strippers, are mainly made of nitric acid, urea, anhydrous ferric trichloride, nine water ferric nitrates, ammonium carbonate mixing, further include the additive of two kinds of heterogeneities of A, B.The beneficial effects of the present invention are: the copper corrosion to circuit board is few, the quality of product is promoted, while treated devil liquor recovery rate is high, environmental protection.
Description
Technical field
The present invention relates to route board machining process field, etch process in especially a kind of printed wiring board (PCB) processing procedure
In tin stripper.
Background technique
In terms of the current each producer using alkaline etching liquid, common problem can not solve to move back during tin
" stinging copper " phenomenon, and the tin stripper after use can not recycling and reusing.
Summary of the invention
In view of the above technical problems, the present invention provides a kind of " not stinging the efficient tin stripper of copper ", and this tin stripper is at recycling
Our special additive is added during reason can be recycled later with reclaiming.
" not stinging copper " tin stripper of the invention mainly uses nitric acid, urea, anhydrous ferric trichloride, nine water ferric nitrates, carbonic acid
Ammonium mixing composition, while there are also the additives of two kinds of heterogeneities of A, B.
Maximum feature of the invention, which is to move back in tin operation process, to generate corrosion phenomenon to the space of a whole page of copper-clad plate.Simultaneously
Social benefit of the invention is far longer than its economic benefit, due to that can recycle all waste liquids to the maximum extent, thus also eliminates
Thus it is threatened to environmental pollution bring.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
" not stinging copper " of the invention efficiently tin stripper mainly use nitric acid, urea, anhydrous ferric trichloride, nine water ferric nitrates,
Ammonium carbonate mixing composition, while there are also the additives of two kinds of heterogeneities of A, B.
Embodiment one:
The each component weight ratio of tin stripper are as follows: nitric acid weight ratio is 30%, and urea weight ratio is 10%, anhydrous ferric trichloride
Configuration ratio be 10%, the weight ratio of nine water ferric nitrates is 25%, ammonium carbonate 25%；
Methanol 0.1mg is added in solution, boric acid 0.1mg is added.
Embodiment two:
The each component weight ratio of tin stripper are as follows: nitric acid weight ratio is 88%, and urea weight ratio is 1%, anhydrous ferric trichloride
Configuration ratio be 1%, the weight ratio of nine water ferric nitrates is 5%, ammonium carbonate 5%；
Methanol 25mg is added in solution, boric acid 25mg is added.
Yellowish-brown (palm fibre) color acidic liquid is presented, density (20 DEG C) in the resulting tin stripper of above-described embodiment: 1.20 ±
0.20g/L, acid equivalent (H+): 5.0 ± 0.5mol/L.Also there is following technical characteristic:
1, it moves back tin and reacts more steady, acid mist occurrence quantity is significantly lower than other similar products, improves operating environment.
2, peeling rate is fast, and for stoste at 30 DEG C, the tin lead layer for stripping 30 μ m-thicks only needs 30sec.
3, stoste is little to copper face corrosion (control is in the range of 0.5 ± 0.1 μm/min).Easy cleaning, noresidue are heavy
It forms sediment.
4, tin/facial pallor amount is high, up to 100 ± 20g/L.
5, after stripping tin/lead-coat, bright-copper-face, oxygen-proof property is strong.
6, it is subjected to returning stripping, does not influence board surface quality.
Maximum feature of the invention, which is to move back in tin operation process, to generate corrosion phenomenon to the space of a whole page of copper-clad plate.Simultaneously
Social benefit of the invention is far longer than its economic benefit, due to that can recycle all waste liquids to the maximum extent, thus also eliminates
Thus it is threatened to environmental pollution bring.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (3)
1. efficient tin stripper, which is characterized in that mainly mixed by nitric acid, urea, anhydrous ferric trichloride, nine water ferric nitrates, ammonium carbonate
It is combined into, wherein nitric acid configuration is than being 30%~88%, and urea weight ratio is 1%~10%, the configuration ratio of anhydrous ferric trichloride
It is 1%~10%, the weight ratio of nine water ferric nitrates is 5%~25%, ammonium carbonate 5%~25%.
2. efficient tin stripper according to claim 1, which is characterized in that efficient tin stripper further include two kinds of differences of A, B at
The additive divided, the A additive is methanol, and range is 0.1~25mg.
3. efficient tin stripper according to claim 2, which is characterized in that the B additive is boric acid, range is 0.1~
25mg。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811102204.0A CN109161893A (en) | 2018-09-20 | 2018-09-20 | Efficient tin stripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811102204.0A CN109161893A (en) | 2018-09-20 | 2018-09-20 | Efficient tin stripper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109161893A true CN109161893A (en) | 2019-01-08 |
Family
ID=64879957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811102204.0A Pending CN109161893A (en) | 2018-09-20 | 2018-09-20 | Efficient tin stripper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109161893A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760743A (en) * | 2009-11-09 | 2010-06-30 | 广东奥美特集团有限公司 | Tin stripping liquid |
| CN101962776A (en) * | 2010-09-01 | 2011-02-02 | 济南德锡科技有限公司 | Solder stripping agent and preparation method thereof |
| CN102061477A (en) * | 2010-12-31 | 2011-05-18 | 深圳市格林美高新技术股份有限公司 | Solder removing liquid, preparation method and application thereof |
| CN106048612A (en) * | 2016-07-28 | 2016-10-26 | 昆山金易得环保科技有限公司 | Tin removing liquid and method for removing tin-contained layer on base material |
-
2018
- 2018-09-20 CN CN201811102204.0A patent/CN109161893A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760743A (en) * | 2009-11-09 | 2010-06-30 | 广东奥美特集团有限公司 | Tin stripping liquid |
| CN101962776A (en) * | 2010-09-01 | 2011-02-02 | 济南德锡科技有限公司 | Solder stripping agent and preparation method thereof |
| CN102061477A (en) * | 2010-12-31 | 2011-05-18 | 深圳市格林美高新技术股份有限公司 | Solder removing liquid, preparation method and application thereof |
| CN106048612A (en) * | 2016-07-28 | 2016-10-26 | 昆山金易得环保科技有限公司 | Tin removing liquid and method for removing tin-contained layer on base material |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190108 |
|
| RJ01 | Rejection of invention patent application after publication |