CN102993808A - Aluminium low-temperature anticorrosion protective agent and method - Google Patents
Aluminium low-temperature anticorrosion protective agent and method Download PDFInfo
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- CN102993808A CN102993808A CN2012103778237A CN201210377823A CN102993808A CN 102993808 A CN102993808 A CN 102993808A CN 2012103778237 A CN2012103778237 A CN 2012103778237A CN 201210377823 A CN201210377823 A CN 201210377823A CN 102993808 A CN102993808 A CN 102993808A
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Abstract
The invention relates to an aluminium low-temperature anticorrosion protective agent and method. The protective agent comprises the following components: 2-mercaptobenzothiazole (MBT), 2-mercaptobenzimidazole (MBI), 2-mercaptobenzoxazole (MBO), benzotriazole (BTA), a lubricating agent and a surfactant, wherein the weight ratio of MBT to MBI to MBO to BTA is 0.5:3:0.5:1.
Description
Technical field
The invention belongs to the sanitas field, refer to especially a kind of aluminium alloy low temp anti-corrosive protecting agent and anti-corrosion method.
Background technology
Metallic corrosion spreads all over national economy and national defense construction every field, endangers very serious.At first, corrosion can cause great direct or indirect financial loss.According to the statistics [5] of the flourishing country of industry, the financial loss that causes because of corrosion accounts for the 1.5%-4.2% of then national economy total output value.Secondly, metallic corrosion, particularly stress corrosion and corrosion fatigue tend to cause calamitous Serious Accident, jeopardize personnel safety.Moreover, corrode a large amount of metals of not only loss, and wasted mass energy, the annual metal of wanting loss 10%-20% because of corrosion.In addition, in the industrial production such as oil, chemical industry, agricultural chemicals, because of the equipment run, drip, leak that corrosion causes, not only economic loss also may make toxic substance leak, and causes environmental pollution, jeopardizes people ' s health.
Equipment and the product of aluminium and alloy thereof are widely used at each department of national economy, and especially in chemical industry and petrochemical industry, because aluminium alloy has the high excellent properties of light weight intensity, the in recent years application in aviation and navigation also is taken seriously day by day simultaneously.
The corrosion that aluminium alloy occurs under various environmental activities spreads all over each department of national economy, brings about great losses, and has huge meaning for the research of metal protection.In the guard technology of various metallic corrosion, the inhibiter technology is simple owing to technique, suitability becomes by force one of effective and the most the most frequently used method.But the inhibiter technology has obvious limitation, and in the liquid phase medium that inhibiter is most widely used, inhibiter must have certain solubleness, and must reach certain concentration.Traditional inhibiter has caused pollution because toxicity is larger to environment; Simultaneously, because the inhibiter consumption is less, extraneous small variation will cause larger impact to system, and this has brought very large difficulty also for the research of inhibition mechanism, these effects limit further developing of inhibiter.
People study all the time and use various controls or prevent method and the technology of metallic corrosion.Use the method for maximum several control metallic corrosion to have in the practice: correct metallic substance and the appropriate design metal construction selected; Electro-chemical protection; Adopt protective coating; Change environment composition, add inhibiter; Self-assembled monolayer forms the inhibitor molecular protective membrane.
Summary of the invention
The objective of the invention is by the improvement to existing self-assembled monolayer technology, to improve a kind of anti-corrosive protecting agent and the anti-corrosion method of aluminum alloy surface low-temperature corrosion protection.
The present invention is achieved by the following technical solutions:
The aluminium alloy low temp anti-corrosive protecting agent, its composition comprises: 2-mercaptobenzothiazole MBT, 2-mercaptobenzimidazole MBI, 2-sulfydryl benzothiazole MBO, benzotriazole BTA, lubricant and tensio-active agent.
Be by weight percentage described 2-mercaptobenzothiazole MBT: 2-mercaptobenzimidazole MBI: 2-sulfydryl benzothiazole MBO: benzotriazole BTA is 0.5: 3: 0.5: 1.
Described lubricant is one or both combinations in stearic acid, butyl stearate or the oleylamide.
Described tensio-active agent is one or both combinations in Nonyl pheno, aliphatic acid polyethenoxy ether sodium sulfate or the aliphatic acid polyethenoxy ether ammonium sulfate.
The protectant preparation method of described aluminum alloy surface low-temperature corrosion protection; with the 2-mercaptobenzothiazole MBT that forms in proportion; 2-mercaptobenzimidazole MBI; 2-sulfydryl benzothiazole MBO and benzotriazole BTA join in the sealed vessel that organic solvent is housed; heating in water bath stirs and makes the complexing agent dissolving; being mixed with is 1.0% solution by weight percentage, then adds the lubricant and above-mentioned four kinds of tensio-active agents that the material gross weight is identical of 1/2 above-mentioned four kinds of material gross weights.
Described organic solvent is one or more combinations in ethylene dichloride, trichloroethane, trichloromethane, ethanol, acetone or the epoxy chloropropane.
Described aluminum alloy surface low-temperature corrosion protection method, its step is to comprise:
1), be coated with pre-treatment: with machinery, chemical or electrochemical method depositing dust goes out degreasing and various erosion, is coated with pre-treatment if the rear aluminium alloy of plating needn't be done;
2), phosphatization: preparation NaH
2PO
4-H
3PO
4Solution is as phosphorization agent;
3) clean: use first the dehydrated alcohol degreasing, with distilled water workpiece is cleaned, clean surface makes its surface for neutral;
4) drying: Al alloy parts must be dry before the coating, and protective material contacts with water when avoiding applying, impact effect, constant weight in loft drier;
5), coating: the Al alloy parts after the clean dried is applied with anti-corrosive protecting agent;
6), dry: under ventilation condition, placed 1-2 minute.
Described phosphating time is 3min.
Described coating is immersion plating, brushing, spraying or showering.
The described immersion plating time is 15-20min.
The invention has the beneficial effects as follows:
By using above anti-corrosive protecting agent to utilize benzotriazole to form the conjugation complex compound with the aluminum alloy surface metal, this complex compound is insoluble to the solution such as acid, alkali, can be good at playing a protective role.
Embodiment
Below describe technical scheme of the present invention in detail by specific embodiment, these embodiment only are used for explanation of the invention and explanation and can not be interpreted as it is limitation of the present invention.
Aluminum alloy surface low-temperature corrosion protection protective material, its composition comprises: 2-mercaptobenzothiazole MBT, 2-mercaptobenzimidazole MBI, 2-sulfydryl benzothiazole MBO, benzotriazole BTA, lubricant and tensio-active agent.Be by weight percentage described 2-mercaptobenzothiazole MBT: 2-mercaptobenzimidazole MBI: 2-sulfydryl benzothiazole MBO: benzotriazole BTA is 0.5: 3: 0.5: 1.Described lubricant is one or both combinations in stearic acid, butyl stearate or the oleylamide.
Described tensio-active agent is one or both combinations in Nonyl pheno, aliphatic acid polyethenoxy ether sodium sulfate or the aliphatic acid polyethenoxy ether ammonium sulfate.
The protectant preparation method of described aluminum alloy surface low-temperature corrosion protection is; with the 2-mercaptobenzothiazole MBT that forms in proportion; 2-mercaptobenzimidazole MB I; 2-sulfydryl benzothiazole MBO and benzotriazole BTA join in the sealed vessel that organic solvent is housed; heating in water bath stirs and makes the complexing agent dissolving; described bath temperature is 30-60 ℃; optimal selection is 30-40 ℃; being mixed with is 1.0% solution by weight percentage, then adds the lubricant and above-mentioned four kinds of tensio-active agents that the material gross weight is identical of 1/2 above-mentioned four kinds of material gross weights.
Described organic solvent is one or more combinations in ethylene dichloride, trichloroethane, trichloromethane, ethanol, acetone or the epoxy chloropropane.
Described aluminum alloy surface low-temperature corrosion protection method, its step is to comprise:
1), be coated with pre-treatment: with machinery, chemical or electrochemical method depositing dust goes out degreasing and various erosion, is coated with pre-treatment if the rear aluminium alloy of plating needn't be done;
2), phosphatization: preparation NaH
2PO
4-H
3PO
4Solution is as phosphorization agent; Described phosphating time is 3min.
3) clean: use first the dehydrated alcohol degreasing, with distilled water workpiece is cleaned, clean surface makes its surface for neutral;
4) drying: Al alloy parts must be dry before the coating, and protective material contacts with water when avoiding applying, impact effect, constant weight in loft drier;
5), coating: the Al alloy parts after the clean dried is applied with anti-corrosive protecting agent; Described coating can be selected the methods such as immersion plating, brushing, spraying or showering.If selecting the described immersion plating time of immersion plating mode is 15-20min.
6), dry: under ventilation condition, placed 1-2 minute.
Claims (10)
1. aluminium alloy low temp anti-corrosive protecting agent, it is characterized in that: its composition includes 2-mercaptobenzothiazole MBT, 2-mercaptobenzimidazole MBI, 2-sulfydryl benzothiazole MBO, benzotriazole BTA, lubricant and tensio-active agent.
2. aluminium alloy low temp anti-corrosive protecting agent according to claim 1, it is characterized in that: be by weight percentage described 2-mercaptobenzothiazole MBT: 2-mercaptobenzimidazole MBI: 2-sulfydryl benzothiazole MBO: benzotriazole BTA is 0.5: 3: 0.5: 1.
3. aluminium alloy low temp anti-corrosive protecting agent according to claim 1, it is characterized in that: described lubricant is one or both combinations in stearic acid, butyl stearate or the oleylamide.
4. aluminium alloy low temp anti-corrosive protecting agent according to claim 1, it is characterized in that: described tensio-active agent is one or both combinations in Nonyl pheno, aliphatic acid polyethenoxy ether sodium sulfate or the aliphatic acid polyethenoxy ether ammonium sulfate.
5. aluminium alloy low temp anti-corrosive protecting agent according to claim 2; it is characterized in that: the 2-mercaptobenzothiazole MBT that will form in proportion; 2-mercaptobenzimidazole MBI; 2-sulfydryl benzothiazole MBO and benzotriazole BTA join in the sealed vessel that organic solvent is housed; heating in water bath stirs and makes the complexing agent dissolving; being mixed with is 1.0% solution by weight percentage, then adds the lubricant and above-mentioned four kinds of tensio-active agents that the material gross weight is identical of 1/2 above-mentioned four kinds of material gross weights.
6. aluminium alloy low temp anti-corrosive protecting agent according to claim 5, it is characterized in that: described organic solvent is one or more combinations in ethylene dichloride, trichloroethane, trichloromethane, ethanol, acetone or the epoxy chloropropane.
7. aluminum alloy surface low-temperature corrosion protection protective material according to claim 5, it is characterized in that: described bath temperature is 30-60 ℃, preferred temperature is 30-40 ℃.
8. described aluminum alloy surface low-temperature corrosion protection method is characterized in that: may further comprise the steps:
1), be coated with pre-treatment: with machinery, chemical or electrochemical method depositing dust goes out degreasing and various erosion, is coated with pre-treatment if the rear aluminium alloy of plating needn't be done;
2), phosphatization: preparation NaH
2PO
4-H
3PO
4Solution is as phosphorization agent;
3) clean: use first the dehydrated alcohol degreasing, with distilled water workpiece is cleaned, clean surface makes its surface for neutral;
4) drying: Al alloy parts must be dry before the coating, and protective material contacts with water when avoiding applying, impact effect, constant weight in loft drier;
5), coating: the Al alloy parts after the clean dried is applied with anti-corrosive protecting agent;
6), dry: under ventilation condition, placed 1-2 minute.
9. aluminium alloy low temp anti-corrosion method according to claim 8, it is characterized in that: described phosphating time is 3min.
10. aluminium alloy low temp anti-corrosion method according to claim 8, it is characterized in that: described coating is immersion plating, brushing, spraying or showering; The described immersion plating time is 15-20min.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978625A (en) * | 2012-09-29 | 2013-03-20 | 吴雅萍 | Aluminum alloy low temperature anticorrosion protection agent and anticorrosion method |
| CN102978626A (en) * | 2012-09-29 | 2013-03-20 | 吴雅萍 | Aluminum alloy surface low temperature anticorrosion protection agent and anticorrosion method |
| CN102995023A (en) * | 2012-09-29 | 2013-03-27 | 蔡丛荣 | Aluminium alloy low-temperature anticorrosion protective agent and preparation method thereof |
| CN105274535A (en) * | 2015-11-10 | 2016-01-27 | 黄忠波 | Metal surface anticorrosion protective agent |
| CN105274550A (en) * | 2015-11-10 | 2016-01-27 | 黄忠波 | Aluminum alloy surface treating agent |
| CN105296979A (en) * | 2015-11-10 | 2016-02-03 | 俞虹 | Aluminum alloy low-temperature anticorrosion protective agent and anticorrosion method |
| CN105297027A (en) * | 2015-11-10 | 2016-02-03 | 黄忠波 | Metal surface corrosion-resistant protective agent and preparation method thereof |
| CN105349978A (en) * | 2015-11-10 | 2016-02-24 | 黄忠波 | Corrosion prevention and color fixing agent for metal surfaces |
| CN106319489A (en) * | 2016-08-19 | 2017-01-11 | 杨雯雯 | Aluminum alloy low-temperature anti-corrosion protective agent and anti-corrosion method |
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| CN102162095A (en) * | 2011-03-01 | 2011-08-24 | 济南德锡科技有限公司 | Anti-discoloring protective agent for silver plating and preparation method as well as application method thereof |
| CN102877050A (en) * | 2012-09-21 | 2013-01-16 | 史昊东 | Automobile part corrosion protection agent and corrosion prevention method |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102162095A (en) * | 2011-03-01 | 2011-08-24 | 济南德锡科技有限公司 | Anti-discoloring protective agent for silver plating and preparation method as well as application method thereof |
| CN102877050A (en) * | 2012-09-21 | 2013-01-16 | 史昊东 | Automobile part corrosion protection agent and corrosion prevention method |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102978625A (en) * | 2012-09-29 | 2013-03-20 | 吴雅萍 | Aluminum alloy low temperature anticorrosion protection agent and anticorrosion method |
| CN102978626A (en) * | 2012-09-29 | 2013-03-20 | 吴雅萍 | Aluminum alloy surface low temperature anticorrosion protection agent and anticorrosion method |
| CN102995023A (en) * | 2012-09-29 | 2013-03-27 | 蔡丛荣 | Aluminium alloy low-temperature anticorrosion protective agent and preparation method thereof |
| CN105274535A (en) * | 2015-11-10 | 2016-01-27 | 黄忠波 | Metal surface anticorrosion protective agent |
| CN105274550A (en) * | 2015-11-10 | 2016-01-27 | 黄忠波 | Aluminum alloy surface treating agent |
| CN105296979A (en) * | 2015-11-10 | 2016-02-03 | 俞虹 | Aluminum alloy low-temperature anticorrosion protective agent and anticorrosion method |
| CN105297027A (en) * | 2015-11-10 | 2016-02-03 | 黄忠波 | Metal surface corrosion-resistant protective agent and preparation method thereof |
| CN105349978A (en) * | 2015-11-10 | 2016-02-24 | 黄忠波 | Corrosion prevention and color fixing agent for metal surfaces |
| CN106319489A (en) * | 2016-08-19 | 2017-01-11 | 杨雯雯 | Aluminum alloy low-temperature anti-corrosion protective agent and anti-corrosion method |
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Application publication date: 20130327 |