CN104818478A - Use method of water electrolysis pole plate surface treatment fluid for improving corrosion resistance - Google Patents
Use method of water electrolysis pole plate surface treatment fluid for improving corrosion resistance Download PDFInfo
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- CN104818478A CN104818478A CN201510140021.8A CN201510140021A CN104818478A CN 104818478 A CN104818478 A CN 104818478A CN 201510140021 A CN201510140021 A CN 201510140021A CN 104818478 A CN104818478 A CN 104818478A
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- pole plate
- treatment solution
- board surface
- water electrolysis
- polar board
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a use method of a water electrolysis pole plate surface treatment fluid for improving the corrosion resistance. The treatment fluid comprises 8wt% of nitrilotriacetic acid, 1wt% of a complexing agent, 0.5wt% of a corrosion inhibitor, 0.2wt% of a surfactant, 0.02-2wt% of a pH adjusting agent, and the balance of water; and the pH value of the treatment fluid is 4.5. The use method of the treatment fluid comprises the following steps: cleaning the surface of a pole plate made of a carbon steel material, and carrying out oil removal, water washing and pickling processes to remove oil stains, dusts and rusts attached on the surface of the pole plate; and immersing the pole plate in the treatment fluid with the temperature of 25DEG C for 20min, taking out the pole plate, flushing the pole plate with clear water, and drying.
Description
The application is divisional application, the invention and created name of original application: water electrolysis polar board surface treatment solution, application number: 201210538474.2, the applying date: 2012.12.13.
Technical field
The present invention relates to a kind of solvent that the surface of carbon steel pole plate is processed, belong to field of metal surface treatment technology.
Background technology
Water electrolysis makes water decomposite hydrogen or oxygen under galvanic effect.In a whole set of water electrolysis equipment, electrolyzer is one of its most crucial device.Industrial conventional water electrolyzer regularly to be laminated to up to a hundred electrolytic chamber by dozens of as required and forms.Each electrolytic chamber is made up of positive plate, oxygen catalysis electrode, choke barrier film, insulated enclosure pad, hydrogen catalysis electrode, negative plate etc.Positive plate and negative plate adopt carbon steel steel plate to make usually.Due to Strong acidic electrolyte composition electrolytic solution to metal, there is strong corrodibility, so the electrolytic solution of electrolyzer generally adopt concentration be 25% to 30% potassium hydroxide or sodium hydroxide solution.Under the effect of electric field, potassium ion or sodium ion move to negative pole, and hydroxide ion moves to positive pole, thus separate out hydrogen and oxygen.In order to reduce overpotential, reduce power consumption, the working temperature of electrolyzer is generally 85 DEG C to 90 DEG C.Such alkali concn and temperature very easily cause alkaline etching to carbon steel steel plate, so antianode plate and negative plate must carry out rotproofing.Because the caustic corrosion resistance performance of pure nickel is very excellent, at present, water electrolysis industry adopts the cathode-anode plate of carbon steel steel plate as water electrolyzer of nickel plating usually.According to result of study display, due to nickel plating carbon steel pole plate in fact and can not plated nickel dam fully coated, nickel layer inevitably has micropore.When pole plate is in the electrolytic solution of harmful ion formation, these harmful ions can enter in the micropore of nickel layer, and enrichment in micropore, with iron ion generation hydrolysis reaction, form the acid that corrodibility is extremely strong, continue to corrode pole plate.In addition, because nickel layer is a kind of coating of cathodic, the standard potential of nickel is-0.25V, and the standard potential of iron is-0.44V, and nickel layer and plain steel can form a pair galvanic couple, electrochemical reaction will occur in the electrolytic solution when they expose simultaneously.Iron in micropore is anode, loses electronics and is dissolved; Nickel is outside negative electrode, obtains electronics, and water electrolysis is released hydrogen.It can thus be appreciated that the possibility that the nickel plating carbon steel pole plate adopting general technology to make is corroded is very big.Once pole plate occurs that serious corrosion can cause hydrogen or oxygen gas to be gone here and there mutually, leak alkali and electrical short, probably set off an explosion, threaten the safety of personnel and equipment.
Summary of the invention
The technical problem to be solved in the present invention is, proposing a kind of for processing the surface of carbon steel pole plate, effectively can improve the using method of the water electrolysis polar board surface treatment solution of the erosion resistance after pole plate nickel plating.
Water electrolysis polar board surface treatment solution of the present invention, comprises following composition: the complexon I of 5wt% to 12wt%, the complexing agent of 0.5wt% to 3wt%, the inhibiter of 0.2wt% to 2wt%, the tensio-active agent of 0.1wt% to 0.5wt, the pH adjusting agent of 0.02wt% to 2wt%, all the other are water; The pH value of described treatment solution is 3 to 6.
Above-mentioned complexing agent is one or more in Trisodium Citrate, Sodium.alpha.-hydroxypropionate, sodium malate.
Above-mentioned inhibiter is one or more in benzotriazole, potassiumiodide, Methylbenzotriazole.
Above-mentioned tensio-active agent is one or more in sodium lauryl sulphate, Sodium dodecylbenzene sulfonate or n-octyl sodium sulfate.
Above-mentioned pH adjusting agent is one or both in trolamine, triethylamine; Above-mentioned pH adjusting agent is one or both in trolamine, triethylamine.
Described using method comprises: clean the polar board surface of carbon steel material, successively through oil removing, washing, pickling process, with by being attached to the greasy dirt of polar board surface, dust, corrosion remove;
Pole plate being immersed in temperature is 20min in the treatment solution of 25 DEG C, rinses and dry after taking-up with clear water.
The present invention has positive effect: water electrolysis polar board surface treatment solution of the present invention is using complexon I as main component; using complexing agent, inhibiter, tensio-active agent as ancillary component; fine and close protective membrane can be formed on the surface of pole plate; effectively isolate iron to contact with nickel layer, effectively promote the erosion resistance of pole plate.Complexon I does two by three carboxyls by respective oxygen and nitrogen can form complex compound with iron ion coordinating to four-coordination, and sequestering power is extremely strong; Add the erosion resistance that complexing agent and inhibiter can improve protective membrane further, add the surface tension that tensio-active agent can significantly improve protective membrane and make pole plate protective membrane finer and close.Do not adopt passivator in treatment solution of the present invention, adopt complexing agent, inhibiter with exceeding, but the complexon I that a large amount of employing is with low cost, under the prerequisite ensureing quality of forming film, greatly can reduce production cost, be with a wide range of applications.
Embodiment
(embodiment 1)
The water electrolysis polar board surface treatment solution of the present embodiment, comprises following composition: the complexon I of 10wt%, the Trisodium Citrate of 3wt%, the benzotriazole of 1wt%, the sodium lauryl sulphate of 0.3wt%, and all the other are water, is 3 by trolamine adjust ph.
The water electrolysis polar board surface treatment solution of the present embodiment, during use, first cleans the polar board surface of carbon steel material, successively through oil removing, washing, pickling process, will be attached to the removing such as greasy dirt, dust, corrosion of polar board surface.Then pole plate being immersed in temperature is 15min in the treatment solution of 40 DEG C, rinses and dry after taking-up with clear water, and bake out temperature is 90 DEG C.Polar board surface forms corrosion-resisting protective film.
(embodiment 2)
The water electrolysis polar board surface treatment solution of the present embodiment, comprises following composition: the complexon I of 8wt%, the Sodium.alpha.-hydroxypropionate of 1wt%, the potassiumiodide of 0.5wt%, the Sodium dodecylbenzene sulfonate of 0.2wt%, and all the other are water, is 4.5 by triethylamine adjust ph.
The water electrolysis polar board surface treatment solution of the present embodiment, during use, first cleans the polar board surface of carbon steel material, successively through oil removing, washing, pickling process, will be attached to the removing such as greasy dirt, dust, corrosion of polar board surface.Then pole plate being immersed in temperature is 20min in the treatment solution of 25 DEG C, rinses and dry after taking-up with clear water, and bake out temperature is 80 DEG C.Polar board surface forms corrosion-resisting protective film.
(embodiment 3)
The water electrolysis polar board surface treatment solution of the present embodiment, comprises following composition: the complexon I of 12wt%, the sodium malate of 2wt%, the Methylbenzotriazole of 0.5wt%, the n-octyl sodium sulfate of 0.2wt%, and all the other are water, is 4 by trolamine adjust ph.
The water electrolysis polar board surface treatment solution of the present embodiment, during use, first cleans the polar board surface of carbon steel material, successively through oil removing, washing, pickling process, will be attached to the removing such as greasy dirt, dust, corrosion of polar board surface.Then pole plate being immersed in temperature is 12min in the treatment solution of 35 DEG C, rinses and dry after taking-up with clear water, and bake out temperature is 120 DEG C.Polar board surface forms corrosion-resisting protective film.
Adopt common process to carry out nickel plating to the pole plate after adopting the water electrolysis polar board surface treatment solution process of embodiment 1 to 3, then carry out SaltSprayTest.Sample is put into salt-spray cabinet, and adopt the NaCl solution of 5%, humidity is 70%, and temperature is 50 DEG C, and continue spraying 8h every day, continuous 8 days, polar board surface was without obvious corrosion phenomenon.
Claims (5)
1. a using method for water electrolysis polar board surface treatment solution, is characterized in that, described treatment solution comprises following composition: the complexon I of 8wt%, the complexing agent of 1wt%, the inhibiter of 0.5wt%, the tensio-active agent of 0.2wt%, the pH adjusting agent of 0.02wt% to 2wt%, all the other are water; The pH value of described treatment solution is 4.5;
Described using method comprises: clean the polar board surface of carbon steel material, successively through oil removing, washing, pickling process, with by being attached to the greasy dirt of polar board surface, dust, corrosion remove;
Pole plate being immersed in temperature is 20min in the treatment solution of 25 DEG C, rinses and dry after taking-up with clear water.
2. water electrolysis polar board surface treatment solution according to claim 1, is characterized in that: described complexing agent is one or more in Trisodium Citrate, Sodium.alpha.-hydroxypropionate, sodium malate.
3. water electrolysis polar board surface treatment solution according to claim 1, is characterized in that: described inhibiter is one or more in benzotriazole, potassiumiodide, Methylbenzotriazole.
4. water electrolysis polar board surface treatment solution according to claim 1, is characterized in that: described tensio-active agent is one or more in sodium lauryl sulphate, Sodium dodecylbenzene sulfonate or n-octyl sodium sulfate.
5. water electrolysis polar board surface treatment solution according to claim 1, is characterized in that: described pH adjusting agent is one or both in trolamine, triethylamine.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210538474.2A CN103088333B (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210538474.2A Division CN103088333B (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104818478A true CN104818478A (en) | 2015-08-05 |
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Family Applications (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510139909.XA Pending CN104805424A (en) | 2012-12-13 | 2012-12-13 | Surface treatment fluid for water electrolysis polar plate |
| CN201510140021.8A Pending CN104818478A (en) | 2012-12-13 | 2012-12-13 | Use method of water electrolysis pole plate surface treatment fluid for improving corrosion resistance |
| CN201510140090.9A Pending CN104775112A (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid with low production cost |
| CN201510139907.0A Pending CN104805423A (en) | 2012-12-13 | 2012-12-13 | Use method of surface treatment fluid for water electrolysis polar plate |
| CN201510140961.7A Pending CN104805426A (en) | 2012-12-13 | 2012-12-13 | Surface treatment fluid used for water electrolysis polar plate and having corrosion resistance improving capacity |
| CN201210538474.2A Expired - Fee Related CN103088333B (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid |
| CN201510140026.0A Pending CN104805425A (en) | 2012-12-13 | 2012-12-13 | Treatment fluid capable of forming corrosion-resistant protecting film on surface of polar plate |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510139909.XA Pending CN104805424A (en) | 2012-12-13 | 2012-12-13 | Surface treatment fluid for water electrolysis polar plate |
Family Applications After (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140090.9A Pending CN104775112A (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid with low production cost |
| CN201510139907.0A Pending CN104805423A (en) | 2012-12-13 | 2012-12-13 | Use method of surface treatment fluid for water electrolysis polar plate |
| CN201510140961.7A Pending CN104805426A (en) | 2012-12-13 | 2012-12-13 | Surface treatment fluid used for water electrolysis polar plate and having corrosion resistance improving capacity |
| CN201210538474.2A Expired - Fee Related CN103088333B (en) | 2012-12-13 | 2012-12-13 | Water electrolysis pole plate surface treatment liquid |
| CN201510140026.0A Pending CN104805425A (en) | 2012-12-13 | 2012-12-13 | Treatment fluid capable of forming corrosion-resistant protecting film on surface of polar plate |
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| CN (7) | CN104805424A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862680A (en) * | 2015-04-08 | 2015-08-26 | 安徽豪鼎金属制品有限公司 | Anti-oxidation metal surface treatment agent |
| CN104862707A (en) * | 2015-04-08 | 2015-08-26 | 安徽豪鼎金属制品有限公司 | Stable metal surface treatment agent |
| CN104862681A (en) * | 2015-04-08 | 2015-08-26 | 安徽豪鼎金属制品有限公司 | Sericin emulsified metal surface treating agent |
| CN104789952A (en) * | 2015-04-08 | 2015-07-22 | 安徽豪鼎金属制品有限公司 | Thickening metal surface treatment agent comprising sericin |
| CN108203821A (en) * | 2018-01-25 | 2018-06-26 | 上海应用技术大学 | A kind of environmentally friendly passivator for adulterating GO, preparation method and applications |
| CN109385213B (en) * | 2018-09-18 | 2021-02-09 | 金华市鸿新新材料科技有限公司 | Environment-friendly phosphorus-free pretreatment liquid suitable for water-based paint and preparation and application thereof |
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- 2012-12-13 CN CN201510139909.XA patent/CN104805424A/en active Pending
- 2012-12-13 CN CN201510140021.8A patent/CN104818478A/en active Pending
- 2012-12-13 CN CN201510140090.9A patent/CN104775112A/en active Pending
- 2012-12-13 CN CN201510139907.0A patent/CN104805423A/en active Pending
- 2012-12-13 CN CN201510140961.7A patent/CN104805426A/en active Pending
- 2012-12-13 CN CN201210538474.2A patent/CN103088333B/en not_active Expired - Fee Related
- 2012-12-13 CN CN201510140026.0A patent/CN104805425A/en active Pending
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| CN102021552A (en) * | 2009-09-21 | 2011-04-20 | 邵阳市创捷化工有限公司 | Modifier for black metal surface matrix and production method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104805425A (en) | 2015-07-29 |
| CN104805423A (en) | 2015-07-29 |
| CN103088333B (en) | 2015-04-29 |
| CN104805426A (en) | 2015-07-29 |
| CN103088333A (en) | 2013-05-08 |
| CN104805424A (en) | 2015-07-29 |
| CN104775112A (en) | 2015-07-15 |
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