CN1869286A - Polishing agent - Google Patents
Polishing agent Download PDFInfo
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- CN1869286A CN1869286A CN 200510034820 CN200510034820A CN1869286A CN 1869286 A CN1869286 A CN 1869286A CN 200510034820 CN200510034820 CN 200510034820 CN 200510034820 A CN200510034820 A CN 200510034820A CN 1869286 A CN1869286 A CN 1869286A
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- acid
- agent
- phosphoric acid
- sulfuric acid
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Abstract
The invention relates to a polishing agent that includes acid agent and inhibitor. The acid agent is the mixture of phosphoric acid 60-80% and vitriol 20-40%, the inhibitor is blue copperas. In the mixture of the acids, it contains 0.1-0.3g blue copperas/L. Comparing to the existing technology, the invention could decrease pollution to environment, and decrease harm to human. It could decrease the operation temperature of polishing.
Description
Technical Field
The invention relates to a polishing agent, which is mainly suitable for polishing the surfaces of metals such as aluminum alloy and the like.
Background
In the prior art, when the aluminum alloy surface is subjected to acid chemical polishing, the polishing agent commonly used comprises phosphoric acid (H)3PO4) Sulfuric acid (H)2SO4) And nitric acid (HNO)3) Three acids are prepared into the three-acid polishing agent. The said polishing agent uses nitric acid as corrosion inhibitor, during polishing, concentrated nitric acid reacts with aluminum, which is strong oxidant and acts as acid, and under heating condition, nitric acid is reduced to produce great amount of NO2Yellow smoke, polluted air, harm to human body, and also have serious corrosivity to factory building and equipment, the above-mentioned chemical reaction formula of nitric acid and aluminium is:
in addition, when the triacid polishing agent is used for polishing the aluminum alloy, the operation temperature is higher, generally 95-115 ℃, and certain difficulty is brought to the polishing operation.
Disclosure of Invention
The invention aims to provide a polishing agent, which avoids using nitric acid as a corrosion inhibitor on the premise of ensuring the polishing effect, and does not generate a large amount of NO (nitric acid) due to the existence of nitric acid during polishing2Yellow smoke is beneficial to environmental protection, is beneficial to protecting the health of operators and also avoids corrosion to plants and equipment; further reducing the operation temperature of polishing and making the polishing operation easier.
The technical scheme adopted by the invention is that the polishing agent is characterized by comprising an acid agent and a corrosion inhibitor, wherein the acid agent is phosphoric acid and sulfuric acid, and the corrosion inhibitor is copper sulfate pentahydrate (CuSO)4.5H2O) for buffering during acid washing as an acid agent.
In the polishing agent, the phosphoric acid is 85% concentrated phosphoric acid, the sulfuric acid is 98% concentrated sulfuric acid, the phosphoric acid accounts for 60-80% of the volume of the acid agent, and the sulfuric acid accounts for 20-40% of the volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.1-0.3 g of blue vitriol is contained per liter.
The polishing agent can also comprise a brightening agent, wherein the brightening agent comprises mercaptobenzimidazole (mercapto-benzimidazole) and sodium Polydithio-dipropyl sulfonate (Polydithio-dipropane sulfonic acid sodium), and each liter of the brightening agent contains 5-10 g of mercaptobenzimidazole and 10-20 g of sodium Polydithio-dipropyl sulfonate in a mixed solution of phosphoric acid and sulfuric acid. The brightening agent can also comprise Ethylene thiourea (1, 2-Ethylene thiourea), and the brightening agent contains 1-3 g of Ethylene thiourea per liter in the mixed solution of phosphoric acid and sulfuric acid.
The invention has the technical effect that compared with the prior art, the polishing agent of the invention has five corrosion inhibitorsThe copper sulfate hydrate replaces nitric acid in the prior art triacid polishing agent, and the nitric acid does not exist during polishingProduction of large amounts of NO2Yellow smoke and other volatile pollution gases can reduce environmental pollution and harm to human bodies, are beneficial to protecting the health of operators and can also avoid corrosion to plants and equipment; further, the polishing agent can be used for polishing at 75-85 ℃, so that the polishing operation temperature is reduced, and the polishing operation is relatively easy.
Detailed Description
Example one
The polishing agent is characterized by comprising an acid agent and a corrosion inhibitor, wherein the acid agent is phosphoric acid and sulfuric acid, the corrosion inhibitor is copper sulfate pentahydrate, the phosphoric acid is 85% concentrated phosphoric acid, the sulfuric acid is 98% concentrated sulfuric acid, the phosphoric acid accounts for 70% of the acid agent by volume, and the sulfuric acid accounts for 30% of the acid agent by volume; in the mixture of phosphoric acid and sulfuric acid, 0.2 g of copper sulfate pentahydrate was contained per liter.
Example two
A polishing agent comprises an acid agent, a corrosion inhibitor and a brightening agent, wherein the acid agent is phosphoric acid and sulfuric acid, the corrosion inhibitor is blue vitriod, the brightening agent comprises mercaptobenzimidazole and sodium polydisulfanilate, the phosphoric acid is 85% concentrated phosphoric acid, the sulfuric acid is 98% concentrated sulfuric acid, the phosphoric acid accounts for 60% of the acid agent by volume, and the sulfuric acid accounts for 40% of the acid agent by volume; in the mixed solution of phosphoric acid and sulfuric acid, 0.3 g of copper sulfate pentahydrate is contained per liter, 8 g of mercaptobenzimidazole is contained per liter, and 15 g of sodium polydithio-dipropyl sulfonate is contained per liter.
EXAMPLE III
A polishing agent, wherein compared with the two phases of the example, the phosphoric acid accounts for 80% of the volume of the acid agent, and the sulfuric acid accounts for 20% of the volume of the acid agent; the brightening agent also comprises ethylene thiourea, wherein in the mixed solution of phosphoric acid and sulfuric acid, 0.1 g of blue vitriol is contained per liter, 10 g of mercaptobenzimidazole is contained per liter, 1 g of ethylene thiourea is contained per liter, and 10 g of sodium polydithio-dipropyl sulfonate is contained perliter.
Example four
A polishing agent, wherein compared with the three phases of the embodiment, phosphoric acid accounts for 65% of the volume of the acid agent, and sulfuric acid accounts for 35% of the volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.2 g of blue vitriol, 5 g of mercaptobenzimidazole, 3 g of ethylene thiourea and 20 g of sodium polydithio dipropyl sulfonate are contained per liter.
EXAMPLE five
A polishing agent, wherein compared with the three phases of the embodiment, the phosphoric acid accounts for 75% of the volume of the acid agent, and the sulfuric acid accounts for 25% of the volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.3 g of blue vitriol, 9 g of mercaptobenzimidazole, 2 g of ethylene thiourea and 13 g of sodium polydithio dipropyl sulfonate are contained per liter.
EXAMPLE six
A polishing agent, wherein compared with the three phases of the embodiment, the phosphoric acid accounts for 62% of the volume of the acid agent, and the sulfuric acid accounts for 38% of the volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.15 g of copper sulfate pentahydrate is contained per liter, 7.5 g of mercaptobenzimidazole is contained per liter, 1.5 g of ethylene thiourea is contained per liter, and 15 g of sodium polydithio-dipropyl sulfonate is contained per liter.
EXAMPLE seven
A polishing agent, wherein compared with the three phases of the embodiment, the phosphoric acid accounts for 70% of the volume of the acid agent, and the sulfuric acid accounts for 30% of the volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.2 g of blue vitriol, 5 g of mercaptobenzimidazole, 1 g of ethylene thiourea and 10 g of sodium polydithio dipropyl sulfonate are contained per liter.
The polishing agent composition of the invention is prepared by uniformly mixing by adopting a general method, such as the following specific methods:
1. the copper sulfate pentahydrate and the acid agent are mixed evenly, and then the brightener is added and mixed.
2. Mixing blue vitriol and brightener, adding mixed acid agent, and mixing. In the process, the mixture of the blue vitriol and the brightener can generate turbidity, which is a normal phenomenon.
In the above process, the brightener can be dissolved in water to obtain the product, the mercaptobenzimidazole is not easily dissolved in water, and ammonia water can be added to promote dissolution
The polishing agent disclosed by the invention takes blue vitriod as a corrosion inhibitor, can prevent the surface of the aluminum alloy from being excessively corroded during polishing treatment before anodic oxidation of the aluminum alloy material, so that the smoothness of an oxide layer on the surface of the aluminum alloy material is improved, and the brightness of the surface of the aluminum alloy can be improved by taking the mercaptobenzimidazole, the ethylene thiourea and the sodium polydithio-dipropyl sulfonate as brightening agents. The polishing agent is used for polishing the aluminum alloy, the treatment temperature is 75-85 ℃, the treatment time is 1-3 minutes, and the polishing agent can achieve ideal effects no matter the smoothness of an oxide layer on the surface of the aluminum alloy or the brightness of the surface of the aluminum alloy, even more particularly the triacid polishing agent in the prior art.
Claims (11)
1. A polishing agent, comprising:
an acid agent containing sulfuric acid and phosphoric acid;
the corrosion inhibitor is used as an acid agent for buffering during acid washing, and the buffering agent is copper sulfate pentahydrate.
2. The polishing agent according to claim 1, wherein the phosphoric acid is concentrated phosphoric acid with a concentration of 85% and accounts for 60-80% of the acid agent by volume.
3. The polishing agent according to claim 1, wherein the sulfuric acid is 98% concentrated sulfuric acid, and accounts for 20-40% of the acid agent by volume.
4. The polishing agent according to claim 1, wherein the polishing agent contains 0.1 to 0.3 g of copper sulfate pentahydrate per liter of a mixture of phosphoric acid and sulfuric acid.
5. The polishing agent according to claim 1, further comprising a brightener, wherein the brightener comprises 5 to 10 g of mercaptobenzimidazole per liter and 10 to 20 g of sodium polydithio-dipropyl sulfonate per liter in a mixed solution of phosphoric acid and sulfuric acid.
6. The polishing agent according to claim 5, wherein the brightener further comprises ethylene thiourea, and the mixed solution of phosphoric acid and sulfuric acid contains 1-3 g of ethylene thiourea per liter.
7. The polishing composition of claim 5 wherein the phosphoric acid is 60 volume percent and the sulfuric acid is 40 volume percent; in the mixed solution of phosphoric acid and sulfuric acid, 0.3 g of copper sulfate pentahydrate is contained per liter, 8 g of mercaptobenzimidazole is contained per liter, and 15 g of sodium polydithio-dipropyl sulfonate is contained per liter.
8. The polishing composition of claim 5 wherein the phosphoric acid is 80% by volume of the acid agent and the sulfuric acid is 20% by volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.1 g of blue vitriol, 10 g of mercaptobenzimidazole, 1 g of ethylene thiourea and 10 g of sodium polydithio dipropyl sulfonate are contained per liter.
9. The polishing composition of claim 5 wherein the phosphoric acid is 65% by volume of the acid agent and the sulfuric acid is 35% by volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.2 g of blue vitriol, 5 g of mercaptobenzimidazole, 3 g of ethylene thiourea and 20 g of sodium polydithio dipropyl sulfonate are contained per liter.
10. The polishing composition of claim 5 wherein the phosphoric acid is 75% by volume of the acid agent and the sulfuric acid is 25% by volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.3 g of blue vitriol, 9 g of mercaptobenzimidazole, 2 g of ethylene thiourea and 13 g of sodium polydithio dipropyl sulfonate are contained per liter.
11. The polishing composition of claim 5 wherein the phosphoric acid is 70% by volume of the acid agent and the sulfuric acid is 30% by volume of the acid agent; in the mixed solution of phosphoric acid and sulfuric acid, 0.2 g of blue vitriol, 5 g of mercaptobenzimidazole, 1 g of ethylene thiourea and 10 g of sodium polydithio dipropyl sulfonate are contained per liter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100348203A CN100389228C (en) | 2005-05-27 | 2005-05-27 | Polishing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100348203A CN100389228C (en) | 2005-05-27 | 2005-05-27 | Polishing agent |
Publications (2)
| Publication Number | Publication Date |
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| CN1869286A true CN1869286A (en) | 2006-11-29 |
| CN100389228C CN100389228C (en) | 2008-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100348203A Expired - Fee Related CN100389228C (en) | 2005-05-27 | 2005-05-27 | Polishing agent |
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| CN (1) | CN100389228C (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677064A (en) * | 2011-03-09 | 2012-09-19 | 汉达精密电子(昆山)有限公司 | Additive for two-acid polishing of aluminum alloy |
| CN102747369A (en) * | 2012-06-18 | 2012-10-24 | 合肥华清金属表面处理有限责任公司 | Yellow fume-free aluminium alloy chemical polishing solution and preparation method thereof |
| CN103014712A (en) * | 2012-12-10 | 2013-04-03 | 深圳市宏达威化工有限公司 | Aluminum component correcting fluid and correction method thereof |
| CN103572296A (en) * | 2012-07-30 | 2014-02-12 | 比亚迪股份有限公司 | Chemical polishing solution |
| CN104562018A (en) * | 2014-12-11 | 2015-04-29 | 程永青 | Smokeless mirror face chemical polishing solution |
| CN105200432A (en) * | 2015-10-13 | 2015-12-30 | 深圳市沙特尔工业材料有限公司 | Aluminum product polishing solution |
| CN105200431A (en) * | 2015-10-13 | 2015-12-30 | 深圳市沙特尔工业材料有限公司 | Aluminium product polishing method |
| CN105386058A (en) * | 2015-11-05 | 2016-03-09 | 深圳市鑫鸿达清洗技术有限公司 | Automatic aluminum alloy polishing solution based on phosphoric acid system |
| CN105568358A (en) * | 2016-03-21 | 2016-05-11 | 苏州新材料研究所有限公司 | Electrochemical polishing solution for Hastelloy substrate, and preparation method and polishing method of electrochemical polishing solution |
| CN106637218A (en) * | 2016-12-24 | 2017-05-10 | 李月巧 | Polishing agent and preparation method thereof |
| CN107653452A (en) * | 2017-09-21 | 2018-02-02 | 东莞市铭通金属科技有限公司 | A kind of environment-friendly and energy-efficient chemical polishing solution and its polishing method |
| CN109536966A (en) * | 2019-01-18 | 2019-03-29 | 惠州市至德精密部件有限公司 | A kind of chemical polishing solution for aluminum products and the polishing method using the polishing fluid |
| CN111593350A (en) * | 2020-06-18 | 2020-08-28 | 周家勤 | Aluminum alloy mirror surface chemical polishing solution and polishing method thereof |
| CN115142066A (en) * | 2022-06-06 | 2022-10-04 | 广东长盈精密技术有限公司 | Chemical reagent and method for workpiece leveling |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638782B (en) * | 2009-07-09 | 2011-08-03 | 中国科学院宁波材料技术与工程研究所 | Chemical polishing solution of sintered NdFeB permanent magnet material and processing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0637708B2 (en) * | 1986-11-25 | 1994-05-18 | 燐化学工業株式会社 | Chemical polishing method for aluminum or its alloy |
-
2005
- 2005-05-27 CN CNB2005100348203A patent/CN100389228C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102677064A (en) * | 2011-03-09 | 2012-09-19 | 汉达精密电子(昆山)有限公司 | Additive for two-acid polishing of aluminum alloy |
| CN102747369A (en) * | 2012-06-18 | 2012-10-24 | 合肥华清金属表面处理有限责任公司 | Yellow fume-free aluminium alloy chemical polishing solution and preparation method thereof |
| CN103572296B (en) * | 2012-07-30 | 2017-07-21 | 比亚迪股份有限公司 | A kind of chemical polishing solution |
| CN103572296A (en) * | 2012-07-30 | 2014-02-12 | 比亚迪股份有限公司 | Chemical polishing solution |
| CN103014712A (en) * | 2012-12-10 | 2013-04-03 | 深圳市宏达威化工有限公司 | Aluminum component correcting fluid and correction method thereof |
| CN103014712B (en) * | 2012-12-10 | 2014-11-26 | 深圳市宏达威化工有限公司 | Aluminum component correcting fluid and correction method thereof |
| CN104562018A (en) * | 2014-12-11 | 2015-04-29 | 程永青 | Smokeless mirror face chemical polishing solution |
| CN104562018B (en) * | 2014-12-11 | 2017-11-14 | 程永青 | A kind of smokeless minute surface chemical polishing solution |
| CN105200432A (en) * | 2015-10-13 | 2015-12-30 | 深圳市沙特尔工业材料有限公司 | Aluminum product polishing solution |
| CN105200431A (en) * | 2015-10-13 | 2015-12-30 | 深圳市沙特尔工业材料有限公司 | Aluminium product polishing method |
| CN105386058A (en) * | 2015-11-05 | 2016-03-09 | 深圳市鑫鸿达清洗技术有限公司 | Automatic aluminum alloy polishing solution based on phosphoric acid system |
| CN105568358B (en) * | 2016-03-21 | 2017-08-29 | 苏州新材料研究所有限公司 | For the electrochemical polish liquid of Hastelloy base band, preparation method and polishing method |
| CN105568358A (en) * | 2016-03-21 | 2016-05-11 | 苏州新材料研究所有限公司 | Electrochemical polishing solution for Hastelloy substrate, and preparation method and polishing method of electrochemical polishing solution |
| CN106637218A (en) * | 2016-12-24 | 2017-05-10 | 李月巧 | Polishing agent and preparation method thereof |
| CN107653452A (en) * | 2017-09-21 | 2018-02-02 | 东莞市铭通金属科技有限公司 | A kind of environment-friendly and energy-efficient chemical polishing solution and its polishing method |
| CN109536966A (en) * | 2019-01-18 | 2019-03-29 | 惠州市至德精密部件有限公司 | A kind of chemical polishing solution for aluminum products and the polishing method using the polishing fluid |
| CN111593350A (en) * | 2020-06-18 | 2020-08-28 | 周家勤 | Aluminum alloy mirror surface chemical polishing solution and polishing method thereof |
| CN115142066A (en) * | 2022-06-06 | 2022-10-04 | 广东长盈精密技术有限公司 | Chemical reagent and method for workpiece leveling |
| CN115142066B (en) * | 2022-06-06 | 2024-06-04 | 广东长盈精密技术有限公司 | Chemical agent and method for workpiece leveling |
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| Publication number | Publication date |
|---|---|
| CN100389228C (en) | 2008-05-21 |
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