CN103060828A - Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent - Google Patents
Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent Download PDFInfo
- Publication number
- CN103060828A CN103060828A CN2013100426052A CN201310042605A CN103060828A CN 103060828 A CN103060828 A CN 103060828A CN 2013100426052 A CN2013100426052 A CN 2013100426052A CN 201310042605 A CN201310042605 A CN 201310042605A CN 103060828 A CN103060828 A CN 103060828A
- Authority
- CN
- China
- Prior art keywords
- acid
- copper
- washing
- passivating agent
- passivation agent
- 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.)
- Granted
Links
Abstract
The invention discloses a pickling passivation agent for copper and copper alloy as well as a preparation method and an application of the pickling passivation agent. The pickling passivation agent comprises the following components by weight percent: 5-15% of sulfuric acid, 1-5% of disodium hydrogen phosphate, 1-5% of sodium nitrate, 5-10% of an A-type passivation agent and the balance of water. According to the invention, after copper or copper alloy is soaked for 30 seconds of immersion, a discolored part, which is formed by high-temperature oxidization, on the surface of the copper or copper alloy can be completely removed, and then a quick and efficient washing effect can be achieved at normal temperature, and the copper or copper alloy does not rust again in a storage period of the process; and the pickling passivation agent is particularly applicable to washing and passivating copper alloy pipes for solar devices.
Description
Technical field
The present invention relates to a kind of copper and copper alloy passivating agent for acid-washing and preparation method thereof, belong to the cleaning metal surface field, be specifically related to the surface cleaning of copper and Cu alloy material.
Background technology
Copper and copper alloy products are widely used in fields such as heavy industry, light industry, household appliances and instrument appliance products.But copper and copper alloy easy oxidation discoloration in atmosphere particularly can make goods get rusty under severe environment, forms verdigris, has changed the original color and luster of copper.Some performances that this had not only affected the visual appearance of product but also damaged itself.For this reason, many surface treatment workers develop many special treatment processs through long-time effort, namely prevent the oxidation of product own, give again product appearance attractive in appearance.In many treatment processs, the chemical pickling method is minimum because of its cost, and efficient is higher and use comparatively extensive.
Traditional chemical pickling method has: sulfuric acid-nitric acid type; The processing methodes such as sulfuric acid-chromic acid type and " three acid " type.But these processing methodes all be unable to do without the very strong chromic anhydride of toxicity and oxynitride, thereby pollute.
Decontamination, protection of the environment is the basic demand of human survival.Our several generations scientific worker is through unremitting effort, progressively the copper spare acid washing passivation technology that higher hazardness is arranged is converted into low concentration, the acid washing passivation technology of less contamination and the operation of putting into production.Yet, although tobacco and pollution of chromium have been in lower numerical value, but still fail to reach the processing requirement of free of contamination copper and copper alloy bright dipped finish and chromium-free deactivation.
Summary of the invention
The present invention seeks to avoid prior art not enough, provide at normal temperatures a kind of, remove copper and copper alloy surface oxidation or variable color part and do not return copper and the quick passivating agent for acid-washing of copper alloy of rust at the operation memory period.
One aspect of the present invention relates to a kind of passivating agent for acid-washing, and it comprises the component of following weight proportion:
Sulfuric acid 5～15%, Sodium phosphate dibasic 1～5%, SODIUMNITRATE 1～5%, A type passivator 5～10%, suitable quantity of water, described A type passivator is the complex composition of benzotriazole and ferric sulfate, wherein benzotriazole and ferric sulfate mass ratio are 1:5-15.
In a preferred embodiment of the present invention, wherein the sulfuric acid massfraction is 6%～12%.
In a preferred embodiment of the present invention, wherein said passivating agent for acid-washing do not comprise concentrated nitric acid, hydrochloric acid and/or contains the compound of chromium, and preferred, described passivating agent for acid-washing does not comprise other component outside the listed component.
In a preferred embodiment of the present invention, it is characterized in that A type passivator is that benzotriazole, ferric sulfate form so that mass ratio 1:8-12 is composite.
The present invention also relates to above-mentioned passivating agent for acid-washing preparation method on the other hand, comprises the steps: that a. takes by weighing raw material according to getting raw material ratio; B. in water, slowly add first sulfuric acid, in the water of thus sulfuric acid heat release, add Sodium phosphate dibasic and SODIUMNITRATE, stirring and dissolving again.C. add A type passivator, namely get Rapid Cleaning passivator after mixing.
Another object of the present invention provides the method for a kind of copper and copper alloy acid wash passivation, at normal temperatures namely, copper and Cu alloy material is soaked 30S, takes out rinsing.
Sulfuric acid of the present invention is that working substance content is not less than 98% technical grade, sulfuric acid belongs to a kind of strong acid, at normal temperatures, but rapid etching copper and copper alloy surface oxide compound, but and the copper matrix do not react, and therefore adopts the sulfuric acid of appropriate amount can remove fast copper and copper alloy surface and guarantee in cleaning performance copper matrix corrosion in the situation preferably.
Adopt Sodium phosphate dibasic and SODIUMNITRATE among the present invention, purpose is the surface cleaning promoter action that plays copper and copper alloy.
Copper and copper alloy passivating agent for acid-washing composition are by benzotriazole and ferric sulfate compound among the present invention, benzotriazole is unquestionable to the corrosion inhibition of copper, behind the composite upper ferric sulfate, passivation effect is strengthened, and its reason may promote for ferric sulfate the film forming passivation of benzotriazole as a kind of weak oxidant.
Passivating agent for acid-washing of the present invention possesses in the following advantage one or all at least:
1. the present invention does not contain the acid that concentrated nitric acid, hydrochloric acid etc. easily produce acid mist, and the passivation composition does not contain sexavalent chrome, and operation hazardness is extremely low.
2. technique of the present invention is simple, copper and copper alloy surface variable color partly can be removed cleaning.
3. the present invention reaches cleaning effect in the soak time of 30S, and copper surface passivation is guaranteed rust not occur returning at inter process.
Embodiment:
Embodiment one:
The clean-out system proportioning: sulfuric acid 7%, Sodium phosphate dibasic 2%, SODIUMNITRATE 4%, A type passivator 5%, all the other are water, A type passivator is benzotriazole, composite the forming of ferric sulfate mass ratio 1:10;
Liquid pool: stainless steel reservoir;
Concrete operations: at room temperature, manually red copper pipe fitting (hollow elongated tubular, length 2m, empty footpath 6mm, wall thickness 1.5mm) is placed Rapid Cleaning passivator 30s, take out, take out after the clear water rinsing;
Cleaning performance: red copper pipe fitting surface presents the minute surface light tone, places in the swallow suburb factory workshop 48 hours without variable color.
Embodiment two:
The clean-out system proportioning: sulfuric acid 10%, Sodium phosphate dibasic 4%, SODIUMNITRATE 2%, A type passivator 9%, all the other are water, A type passivator is benzotriazole, composite the forming of ferric sulfate mass ratio 1:10;
Soda liquor container: stainless steel reservoir;
Concrete practical operation is done: at room temperature, manually the brass pipe fitting is placed Rapid Cleaning passivator 30s, take out.Take out after the clear water rinsing;
Cleaning performance: brass pipe fitting surface presents the minute surface light tone, places in the swallow suburb factory workshop 48 hours without variable color.
The above be the specific embodiment of the present invention only, but protection scope of the present invention is not limited to this, and any variation or replacement of expecting without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (8)
1. passivating agent for acid-washing, it comprises the component of following weight proportion:
Sulfuric acid 5～15%, Sodium phosphate dibasic 1～5%, SODIUMNITRATE 1～5%, A type passivator 5～10%, suitable quantity of water, described A type passivator is the complex composition of benzotriazole and ferric sulfate, wherein benzotriazole and ferric sulfate mass ratio are 1:5-15.
2. passivating agent for acid-washing according to claim 1, wherein the sulfuric acid massfraction is 6%～12%.
3. passivating agent for acid-washing according to claim 1 and 2, wherein said passivating agent for acid-washing do not comprise concentrated nitric acid, hydrochloric acid and/or contain the compound of chromium, and preferred, described passivating agent for acid-washing does not comprise other component outside the listed component.
4. according to passivating agent for acid-washing claimed in claim 3, it is characterized in that A type passivator is that benzotriazole, ferric sulfate form so that mass ratio 1:8-12 is composite.
5. the preparation method of arbitrary described quick passivating agent for acid-washing comprises the steps: according to claim 1 ~ 4
A. take by weighing raw material according to getting raw material ratio;
B. in water, slowly add first sulfuric acid, in the water of thus sulfuric acid heat release, add Sodium phosphate dibasic and SODIUMNITRATE, stirring and dissolving again;
C. add A type passivator, namely get Rapid Cleaning passivator after mixing.
6. such as the application of the arbitrary described passivating agent for acid-washing of claim 1 ~ 4 at Cleaning and Passivation copper or Cu alloy material.
7. application according to claim 6 is characterized in that: at normal temperatures copper to be cleaned or Cu alloy material are soaked 20-40S in described passivating agent for acid-washing, take out rinsing.
8. application according to claim 6 is characterized in that copper or Cu alloy material are sun power equipment copper alloy heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042605.2A CN103060828B (en) | 2013-02-04 | 2013-02-04 | Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042605.2A CN103060828B (en) | 2013-02-04 | 2013-02-04 | Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103060828A true CN103060828A (en) | 2013-04-24 |
| CN103060828B CN103060828B (en) | 2015-06-17 |
Family
ID=48103713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310042605.2A Active CN103060828B (en) | 2013-02-04 | 2013-02-04 | Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103060828B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313610A (en) * | 2014-10-10 | 2015-01-28 | 河南平高电气股份有限公司 | Environment-friendly copper and copper alloy pickling agent and copper and copper alloy silver-plating pretreatment method |
| CN104962935A (en) * | 2015-06-13 | 2015-10-07 | 周彩球 | Copper alloy acid pickling passivant |
| CN105040010A (en) * | 2015-07-03 | 2015-11-11 | 合肥卡诺汽车空调有限公司 | Air conditioner system pipeline member pickling passivation technology |
| CN105350005A (en) * | 2014-08-20 | 2016-02-24 | 中国石油化工股份有限公司 | Compound acid washing liquid containing passivation agent, and preparation method thereof |
| CN104313610B (en) * | 2014-10-10 | 2017-01-04 | 河南平高电气股份有限公司 | A kind of copper and copper alloy environmental protection mordant, copper and the silver-plated pre-treating method of copper alloy |
| CN107299358A (en) * | 2017-06-28 | 2017-10-27 | 富威科技（吴江）有限公司 | A kind of cleaning of the hard state copper foil of short route |
| WO2017219254A1 (en) * | 2016-06-21 | 2017-12-28 | 深圳市恒兆智科技有限公司 | Passivator, copper part and passivation treatment method therefor |
| CN109880161A (en) * | 2019-02-26 | 2019-06-14 | 张坤 | A kind of Compositional type copper resistant agent and its preparation and verification method |
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865505A (en) * | 2006-06-14 | 2006-11-22 | 内蒙古第一机械制造（集团）有限公司 | Acidwash solution for copper and copper alloy |
| CN101353793A (en) * | 2007-07-26 | 2009-01-28 | 江苏海迅实业集团股份有限公司 | Copper alloy antirust agent |
-
2013
- 2013-02-04 CN CN201310042605.2A patent/CN103060828B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865505A (en) * | 2006-06-14 | 2006-11-22 | 内蒙古第一机械制造（集团）有限公司 | Acidwash solution for copper and copper alloy |
| CN101353793A (en) * | 2007-07-26 | 2009-01-28 | 江苏海迅实业集团股份有限公司 | Copper alloy antirust agent |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105350005A (en) * | 2014-08-20 | 2016-02-24 | 中国石油化工股份有限公司 | Compound acid washing liquid containing passivation agent, and preparation method thereof |
| CN105350005B (en) * | 2014-08-20 | 2018-04-03 | 中国石油化工股份有限公司 | A kind of compounding pickle containing passivator and preparation method thereof |
| CN104313610A (en) * | 2014-10-10 | 2015-01-28 | 河南平高电气股份有限公司 | Environment-friendly copper and copper alloy pickling agent and copper and copper alloy silver-plating pretreatment method |
| CN104313610B (en) * | 2014-10-10 | 2017-01-04 | 河南平高电气股份有限公司 | A kind of copper and copper alloy environmental protection mordant, copper and the silver-plated pre-treating method of copper alloy |
| CN104962935A (en) * | 2015-06-13 | 2015-10-07 | 周彩球 | Copper alloy acid pickling passivant |
| CN105040010A (en) * | 2015-07-03 | 2015-11-11 | 合肥卡诺汽车空调有限公司 | Air conditioner system pipeline member pickling passivation technology |
| WO2017219254A1 (en) * | 2016-06-21 | 2017-12-28 | 深圳市恒兆智科技有限公司 | Passivator, copper part and passivation treatment method therefor |
| CN107299358A (en) * | 2017-06-28 | 2017-10-27 | 富威科技（吴江）有限公司 | A kind of cleaning of the hard state copper foil of short route |
| CN109880161A (en) * | 2019-02-26 | 2019-06-14 | 张坤 | A kind of Compositional type copper resistant agent and its preparation and verification method |
| CN112064006A (en) * | 2020-09-23 | 2020-12-11 | 东莞长盈精密技术有限公司 | Passivation method for copper piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103060828B (en) | 2015-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103060828B (en) | Pickling passivation agent for copper and copper alloy as well as preparation method and application of pickling passivation agent | |
| CN103484872B (en) | A kind of pickle solution and its preparation method containing Mixed Surfactant System | |
| CN101463302B (en) | Aqueous degreasing agent for stainless steel tube | |
| CN102994995B (en) | Metal surface rust protection solution | |
| CN105839093B (en) | A kind of electro-coppering room temperature chromium-free passivation liquid and its passivation technology | |
| CN102653868B (en) | Environment-friendly type acid-washing stainless steel passivating solution | |
| CN102732899B (en) | Water-based anti-rusting type washing agent for metal parts | |
| CN105441921B (en) | A kind of metalwork anti-corrosive technology | |
| CN103757647A (en) | Steel material acid-washing and phosphorization method | |
| CN103334099A (en) | Environmentally-friendly multifunctional metal surface treating fluid | |
| CN105018949A (en) | Rust remover suitable for steel precision part and rust removing process of rust remover | |
| WO2016201935A1 (en) | Method for forming golden yellow film layer on surface of aluminum alloy | |
| CN108707888A (en) | A kind of aluminum alloy surface passivation process improving corrosion resistance | |
| CN111575693B (en) | Chromium-free pre-passivation solution for hot-dip galvanized steel pipe | |
| CN104451633B (en) | Rust-removing and rust-preventing solution and preparation method thereof | |
| CN105624703A (en) | Non-ferrous metal surface treatment agent and preparation method thereof | |
| CN104278281B (en) | Pickling solution containing compound passivating agent and preparation method thereof | |
| CN105350005A (en) | Compound acid washing liquid containing passivation agent, and preparation method thereof | |
| CN110257838B (en) | Aluminum profile powder spraying pretreatment process | |
| CN104313589B (en) | A kind of micro-emulsion type metal antirust solution and preparation method thereof | |
| CN107988608A (en) | A kind of rust remover and its derusting process suitable for steel precision component | |
| CN104962935A (en) | Copper alloy acid pickling passivant | |
| CN103757641A (en) | Corrosion inhibition cleanser for sea water desalting plant and application thereof | |
| CN103849869B (en) | A kind of bicycle use general carbon steel surface treatment liquid and preparation method thereof | |
| WO2017219254A1 (en) | Passivator, copper part and passivation treatment method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 101318 Beijing city B District Shunyi District Tianzhu Airport Industrial Zone Anxiang Street No. 5 Applicant after: BEIJING BLUESTAR CLEANING CO., LTD. Address before: 101318 Beijing city B District Shunyi District Tianzhu Airport Industrial Zone of Peace Road No. 5 Applicant before: Beijing Bluestar Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: BEIJING BLUESTAR TECHNOLOGY CO., LTD. TO: BEIJING BLUESTAR WASHING CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |