CN105862102A - Passivation process for aluminum foil for air conditioner - Google Patents
Passivation process for aluminum foil for air conditioner Download PDFInfo
- Publication number
- CN105862102A CN105862102A CN201610331641.4A CN201610331641A CN105862102A CN 105862102 A CN105862102 A CN 105862102A CN 201610331641 A CN201610331641 A CN 201610331641A CN 105862102 A CN105862102 A CN 105862102A
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- China
- Prior art keywords
- air conditioner
- aluminium foil
- conditioner aluminium
- aluminum foil
- water
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a passivation process for aluminum foil for an air conditioner. The passivation process comprises the following steps of (1) placing the surface of aluminum foil for the air conditioner into a soaking tank, flushing clean with clear water after soaking for 2min by using a 28-DEG C soaking agent, and then, lightly wiping the surface of the aluminum foil for the air conditioner by using clean soft cloth; (2) placing the aluminum foil for the air conditioner, treated in the step (1), into electrolyte, and electrolyzing by taking iron as a cathode and the aluminum foil for the air conditioner as an anode; (3) cleaning the aluminum foil for the air conditioner, treated in the step (2), by using 18-DEG C deionized water, and then, lightly wiping water spots on the surface of the aluminum foil for the air conditioner by using the clean soft cloth; (4) treating the aluminum foil for the air conditioner, treated in the steps, in a 22-DEG C passivation solution for 78-84s; and (5) flushing the passivated aluminum foil for the air conditioner to be clean by using deionized water, and drying at 30 DEG C. By using the passivation process disclosed by the invention, the uniformity during subsequent passivation and the density of a passivation layer can be improved, and the thickness of the passivation layer can be increased.
Description
Technical field
The present invention relates to air conditioner aluminium foil field of surface treatment, particularly relate to a kind of air conditioner aluminium foil passivation technology.
Background technology
Aluminum and aluminium alloy are one of current applications applicable materials quite varied, most economical.World aluminum yield occupies first of non-ferrous metal within 1956, beginning to exceed copper yield always.The yield of current aluminum and consumption (calculating by ton) are only second to steel, become the second largest metal of mankind's application；And the resource of aluminum is the abundantest, according to primary Calculation, the mineral reserve storage capacity of aluminum accounts for the earth's crust and constitutes more than the 8% of material.In recent years, the use of air-conditioning gets more and more, and along with the impact of energy scarcity, air-conditioner is also towards miniaturization.Between the fin of the heat exchanger in air-conditioner, many employing aluminium foils make at present, so needing to be passivated air conditioner aluminium foil surface processing, prevent it to be corroded, and the consistency of existing deactivating process for the treatment of passivation is the highest, and the thinner thickness of passivation layer, easily come off.
Summary of the invention
It is an object of the invention to provide a kind of air conditioner aluminium foil passivation technology, be achieved through the following technical solutions:
A kind of air conditioner aluminium foil passivation technology, comprises the following steps:
(1), by air conditioner aluminium foil surface put into and soaking compartment uses the soaking agent immersion treatment of 28 DEG C after 2 minutes, use clear water to rinse well, then use clean soft cloth wiping air conditioner aluminium foil surface gently；Described soaking agent is made up of following component by weight: Herba Clinopodii Polycephali 7, sodium tripolyphosphate 5, ethanol 22, clear water 80, silicic acid 3；Its preparation method is: smashed to pieces by Herba Clinopodii Polycephali, puts in the clear water water of 30 weight portions, adds anthraquinone and the sodium carbonate of Herba Clinopodii Polycephali weight 2.5% of Herba Clinopodii Polycephali weight 0.1%, after stirring, carrying out the airtight steaming and decocting of water-bath, temperature controls at 88-90 DEG C, time is 30 minutes, it is then cooled to room temperature, filter solid residue, obtain filtrate, gained filtrate is mixed together with sodium tripolyphosphate, ethanol, silicic acid and remaining clear water, stirs, obtain required soak；
(2), the air conditioner aluminium foil that step (1) is handled well is put in electrolyte, using ferrum as negative electrode, air conditioner aluminium foil is as anode, being electrolysed, voltage uses 9V, and the temperature of electrolyte controls 30 DEG C, electrolysis time is 4 minutes, when electrolysis is carried out, air conditioner aluminium foil rotates simultaneously, and rotary speed is 35r/min；Described electrolyte is made up of following component by mass percentage: 1.5% sodium bicarbonate, 0.3% sodium tripolyphosphate remaining be water；The PH of electrolyte is maintained between 8.5-9；
(3) air conditioner aluminium foil, by step (2) handled well uses 18 DEG C of deionized waters to clean, and then uses clean soft cloth to dry air conditioner aluminium foil surface gently water stain；
(4) air conditioner aluminium foil, by above-mentioned steps handled well uses passivating solution to process the 78-84 second in the passivating solution of 22 DEG C,；Described passivating solution is made up of following component by weight: yittrium oxide 0.5 part, GdCl3 6H2O 1.4 parts, argentum powder and copper powder mixture 0.01 part, sodium silicate 0.9 part, double triethanolamine diisopropyl titanate esters 1.5 parts, Ludox 25 parts, epoxy resin 1 part, hydrogen peroxide 18 parts, deionized water 50 parts, lipoid fatty acid 1 part, sodium alkyl sulfate 0.8 part, auxiliary agent 0.5 part；Described auxiliary agent is made up of following component in percentage terms: 20.5% cyclohexanhexanol phosphate ester, 0.5% sodium chloride, 47% ethanol, 32% Polyethylene Glycol；The manufacture method of described auxiliary agent is: sodium chloride, cyclohexanhexanol phosphate ester are mixed with ethanol, and control temperature is at 8-10 DEG C, after continuing 40 minutes, dripping Polyethylene Glycol again, control to drip off at 25 minutes, dropping limit, limit is stirred, mixing speed is 250r/min, finally stands 5-8 minute,；
(5) air conditioner aluminium foil, by Passivation Treatment completed uses deionized water rinsing clean, dries at 30 DEG C.
The invention has the beneficial effects as follows: by the soaking agent of putting in the present invention by air conditioner aluminium foil soaks the foreign body that can remove air conditioner aluminium foil surface, by adding silicic acid, its adsorptivity can improve the degree removing air conditioner aluminium foil Superficial Foreign Body, by adding sodium tripolyphosphate in soaking agent, utilize the bad film property of sodium tripolyphosphate and good initial dispersion, other composition can be reduced adsorb on air conditioner aluminium foil surface, cause and need after-treatment, the uniformity when lifting of other composition is follow-up to be passivated and the consistency of passivation layer can be coordinated again simultaneously, promote the caking property with coating when air conditioner aluminium foil sprays after being passivated, and after processing, the thickness of passivation layer can be increased, it is greatly promoted the flatness on air conditioner aluminium foil surface after the Corrosion Protection of air conditioner aluminium foil and passivation.
nullPass through yittrium oxide、GdCl3·6H2O、The passivating solution that argentum powder and copper powder mixture prepare，After Passivation Treatment air conditioner aluminium foil，The passivating film defining continuous print fine and close has high stability and corrosion resisting property，Antioxygenic property is strong，By adding double triethanolamine diisopropyl titanate esters、Sodium alkyl sulfate、Epoxy resin can improve the film property of passivating film and the seriality of film greatly，Seriality and the adhesion property of passivating film of passivating film is can further improve by the cooperation of Ludox and lipoid fatty acid，Can effectively protect air conditioner aluminium foil material，Avoid being corroded by the external world，Long 1 times through the life-span of the passivating film of air conditioner aluminium foil surface passivated membrane ratio under same environment general passivation formation of Passivation Treatment of the present invention，After transpassivation, the salt spray resistance of air conditioner aluminium foil is more than within 122 hours, (6.8%NaCl solution is sprayed continuously，Temperature 35 DEG C).
Detailed description of the invention
A kind of air conditioner aluminium foil passivation technology, comprises the following steps:
(1), by air conditioner aluminium foil surface put into and soaking compartment uses the soaking agent immersion treatment of 28 DEG C after 2 minutes, use clear water to rinse well, then use clean soft cloth wiping air conditioner aluminium foil surface gently；Described soaking agent is made up of following component by weight: Herba Clinopodii Polycephali 7, sodium tripolyphosphate 5, ethanol 22, clear water 80, silicic acid 3；Its preparation method is: smashed to pieces by Herba Clinopodii Polycephali, puts in the clear water water of 30 weight portions, adds anthraquinone and the sodium carbonate of Herba Clinopodii Polycephali weight 2.5% of Herba Clinopodii Polycephali weight 0.1%, after stirring, carrying out the airtight steaming and decocting of water-bath, temperature controls at 88-90 DEG C, time is 30 minutes, it is then cooled to room temperature, filter solid residue, obtain filtrate, gained filtrate is mixed together with sodium tripolyphosphate, ethanol, silicic acid and remaining clear water, stirs, obtain required soak；
(2), the air conditioner aluminium foil that step (1) is handled well is put in electrolyte, using ferrum as negative electrode, air conditioner aluminium foil is as anode, being electrolysed, voltage uses 9V, and the temperature of electrolyte controls 30 DEG C, electrolysis time is 4 minutes, when electrolysis is carried out, air conditioner aluminium foil rotates simultaneously, and rotary speed is 35r/min；Described electrolyte is made up of following component by mass percentage: 1.5% sodium bicarbonate, 0.3% sodium tripolyphosphate remaining be water；The PH of electrolyte is maintained between 8.5-9；
(3) air conditioner aluminium foil, by step (2) handled well uses 18 DEG C of deionized waters to clean, and then uses clean soft cloth to dry air conditioner aluminium foil surface gently water stain；
(4) air conditioner aluminium foil, by above-mentioned steps handled well uses passivating solution to process the 78-84 second in the passivating solution of 22 DEG C,；Described passivating solution is made up of following component by weight: yittrium oxide 0.5 part, GdCl3 6H2O 1.4 parts, argentum powder and copper powder mixture 0.01 part, sodium silicate 0.9 part, double triethanolamine diisopropyl titanate esters 1.5 parts, Ludox 25 parts, epoxy resin 1 part, hydrogen peroxide 18 parts, deionized water 50 parts, lipoid fatty acid 1 part, sodium alkyl sulfate 0.8 part, auxiliary agent 0.5 part；Described auxiliary agent is made up of following component in percentage terms: 20.5% cyclohexanhexanol phosphate ester, 0.5% sodium chloride, 47% ethanol, 32% Polyethylene Glycol；The manufacture method of described auxiliary agent is: sodium chloride, cyclohexanhexanol phosphate ester are mixed with ethanol, and control temperature is at 8-10 DEG C, after continuing 40 minutes, dripping Polyethylene Glycol again, control to drip off at 25 minutes, dropping limit, limit is stirred, mixing speed is 250r/min, finally stands 5-8 minute,；
(5) air conditioner aluminium foil, by Passivation Treatment completed uses deionized water rinsing clean, dries at 30 DEG C.
Claims (1)
1. an air conditioner aluminium foil passivation technology, it is characterised in that comprise the following steps:
(1), by air conditioner aluminium foil surface put into and soaking compartment uses the soaking agent immersion treatment of 28 DEG C after 2 minutes, use clear water to rinse well, then use clean soft cloth wiping air conditioner aluminium foil surface gently；Described soaking agent is made up of following component by weight: Herba Clinopodii Polycephali 7, sodium tripolyphosphate 5, ethanol 22, clear water 80, silicic acid 3；Its preparation method is: smashed to pieces by Herba Clinopodii Polycephali, puts in the clear water water of 30 weight portions, adds anthraquinone and the sodium carbonate of Herba Clinopodii Polycephali weight 2.5% of Herba Clinopodii Polycephali weight 0.1%, after stirring, carrying out the airtight steaming and decocting of water-bath, temperature controls at 88-90 DEG C, time is 30 minutes, it is then cooled to room temperature, filter solid residue, obtain filtrate, gained filtrate is mixed together with sodium tripolyphosphate, ethanol, silicic acid and remaining clear water, stirs, obtain required soak；
(2), the air conditioner aluminium foil that step (1) is handled well is put in electrolyte, using ferrum as negative electrode, air conditioner aluminium foil is as anode, being electrolysed, voltage uses 9V, and the temperature of electrolyte controls 30 DEG C, electrolysis time is 4 minutes, when electrolysis is carried out, air conditioner aluminium foil rotates simultaneously, and rotary speed is 35r/min；Described electrolyte is made up of following component by mass percentage: 1.5% sodium bicarbonate, 0.3% sodium tripolyphosphate remaining be water；The PH of electrolyte is maintained between 8.5-9；
(3) air conditioner aluminium foil, by step (2) handled well uses 18 DEG C of deionized waters to clean, and then uses clean soft cloth to dry air conditioner aluminium foil surface gently water stain；
(4) air conditioner aluminium foil, above-mentioned steps handled well uses passivating solution to process the 82-88 second in the passivating solution of 22 DEG C；Described passivating solution is made up of following component by weight: yittrium oxide 0.5 part, GdCl3 6H2O 1.4 parts, argentum powder and copper powder mixture 0.01 part, sodium silicate 0.9 part, double triethanolamine diisopropyl titanate esters 1.5 parts, Ludox 25 parts, epoxy resin 1 part, hydrogen peroxide 18 parts, deionized water 50 parts, lipoid fatty acid 1 part, sodium alkyl sulfate 0.8 part, auxiliary agent 0.5 part；Described auxiliary agent is made up of following component in percentage terms: 20.5% cyclohexanhexanol phosphate ester, 0.5% sodium chloride, 47% ethanol, 32% Polyethylene Glycol；The manufacture method of described auxiliary agent is: sodium chloride, cyclohexanhexanol phosphate ester are mixed with ethanol, and control temperature is at 8-10 DEG C, after continuing 40 minutes, dripping Polyethylene Glycol again, control to drip off at 25 minutes, dropping limit, limit is stirred, mixing speed is 250r/min, finally stands 5-8 minute,；
(5) air conditioner aluminium foil, by Passivation Treatment completed uses deionized water rinsing clean, dries at 30 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331641.4A CN105862102A (en) | 2016-05-18 | 2016-05-18 | Passivation process for aluminum foil for air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331641.4A CN105862102A (en) | 2016-05-18 | 2016-05-18 | Passivation process for aluminum foil for air conditioner |
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| CN105862102A true CN105862102A (en) | 2016-08-17 |
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| CN201610331641.4A Pending CN105862102A (en) | 2016-05-18 | 2016-05-18 | Passivation process for aluminum foil for air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893468A (en) * | 2020-07-05 | 2020-11-06 | 江苏荣企新材料科技有限公司 | Aluminum-magnesium alloy metal frame surface corrosion-resistant treatment process |
| CN115094404A (en) * | 2022-06-10 | 2022-09-23 | 广州和力表面处理技术有限公司 | Preparation and application of battery aluminum foil chromium-free passivator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597758A (en) * | 2009-06-26 | 2009-12-09 | 袁兴 | Low chromium anticorrosive chemical conversion treating fluid on surface of constructive aluminium profile and using method thereof |
| CN101886260A (en) * | 2010-07-08 | 2010-11-17 | 南通飞拓生物科技有限公司 | Composite film chromium-free passivant |
| CN103451646A (en) * | 2012-06-21 | 2013-12-18 | 上海理工大学 | Stainless steel passivation process |
-
2016
- 2016-05-18 CN CN201610331641.4A patent/CN105862102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597758A (en) * | 2009-06-26 | 2009-12-09 | 袁兴 | Low chromium anticorrosive chemical conversion treating fluid on surface of constructive aluminium profile and using method thereof |
| CN101886260A (en) * | 2010-07-08 | 2010-11-17 | 南通飞拓生物科技有限公司 | Composite film chromium-free passivant |
| CN103451646A (en) * | 2012-06-21 | 2013-12-18 | 上海理工大学 | Stainless steel passivation process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893468A (en) * | 2020-07-05 | 2020-11-06 | 江苏荣企新材料科技有限公司 | Aluminum-magnesium alloy metal frame surface corrosion-resistant treatment process |
| CN115094404A (en) * | 2022-06-10 | 2022-09-23 | 广州和力表面处理技术有限公司 | Preparation and application of battery aluminum foil chromium-free passivator |
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Application publication date: 20160817 |
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