CN108930055A - Metal-surface nano Coating Processes - Google Patents
Metal-surface nano Coating Processes Download PDFInfo
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- CN108930055A CN108930055A CN201810786462.9A CN201810786462A CN108930055A CN 108930055 A CN108930055 A CN 108930055A CN 201810786462 A CN201810786462 A CN 201810786462A CN 108930055 A CN108930055 A CN 108930055A
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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
Abstract
The present invention relates to a kind of metal-surface nano Coating Processes, include the following steps: A, are started the cleaning processing with cleaning solution to metal surface;B, metal is handled in lye;C, it is pre-processed in the acid solution containing sulfuric acid;D, using graphite plate as cathode, metal as anode, be put into containing sulfuric acid, phosphoric acid electrolyte in carry out direct current electrolysis, make metal surface formed layer oxide film, which is the micropore containing 20-200 nanometers;E, the metal aoxidized is put into nano coating solution and is impregnated;F, metal carries out protection processing in polyalkenyl phosphate.The method can significantly improve the yield of nano coating, the binding force of nano coating is obviously got well than the prior art.
Description
Technical field
The present invention relates to field of metal surface treatment technology, in particular to a kind of metal-surface nano Coating Processes.
Background technique
Nano-spray is application of the nanotechnology in engineering, is that body surface forms the new of one layer of fine and close nano coating
Type spraying technology.Contain high rigidity, highly corrosiveness-resistant nanometer material in coating, it is possible to provide multiple color and gloss are a kind of rings
It protects, economic, durable surface treatment, existing nano-spray technology is the mode using direct spraying, therefore there are coating and gold
Metal surface combine it is bad, coating is easy to fall off, and the unequal bad order of step thicknesses easily occurs in coating.
Summary of the invention
The present invention compared with the prior art, since nano coating is present in the inside and top of oxidation film nano-pore, and receives
Rice coating can maintain good binding force well in conjunction with spray coating, compared with prior art, the method can significantly improve
Its yield has the advantages of cated binding force is obviously good than the prior art, is achieved by the following technical solution.
Metal-surface nano Coating Processes, include the following steps:
A, metal surface is started the cleaning processing with cleaning solution;
B, metal is handled in lye;
C, it is pre-processed in the acid solution containing sulfuric acid;
D, using graphite plate as cathode, metal as anode, be put into containing sulfuric acid, phosphoric acid electrolyte in carry out direct current
Electrolysis makes metal surface form layer oxide film, which is the micropore containing 20-200 nanometers;
E, the metal aoxidized is put into nano coating solution and is impregnated;
F, metal carries out protection processing in polyalkenyl phosphate.
Further, the weight ratio of the nano coating solution is: aqueous polyurethane 5%-6%, polyvinyl alcohol 1%-
2%, p diethylaminobenzoic acid rouge 13%-15%, water 77%-80%.
Further, the cleaning process in the step A, specifically: by metal in the phosphorus that mass concentration is 45~55g/L
It is impregnated 5-8 minutes, 50-60 DEG C of temperature in the degreasing agent solution of sour sodium, sodium carbonate and sodium pyrophosphate mixed solution.
Further, the base extraction process in the step B, the NAOH solution therein, NAOH concentration 40-60g/
L, 1-2 minutes, 30-50 DEG C.
Further, the step C includes the pretreated method in the acid solution containing sulfuric acid, specifically: metal is put
Enter in the sulfuric acid solution, concentration 50-100g/L, time 1-2 minute, 20-30 DEG C of temperature.
Further, in the step D, including electrochemical electrolysis processing method, specifically, the sulfuric acid concentration is
50-100g/L, in the solution of phosphoric acid 50-100/L, being passed through current density is 0.03~0.6A/cm2, and temperature controls 30-60 DEG C.
Further, it in step E, in the nano coating solution, impregnates 1-5 minutes, concentration 200-300ml/L, temperature
20-40 DEG C of control.
Further, in step F, metal coating processing is that the metal by surface with nano coating is put into polyalkenyl
Impregnate 1-2 minutes in phosphate, 20-40 DEG C of temperature, polyalkenyl phosphoric acid ester concentration 30-100g/L.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
It is to spray one layer of nanometer in metallic surface to apply the present invention relates to a kind of metal-surface nano Coating Processes
Layer, includes the following steps:
Step A, metal surface is started the cleaning processing with cleaning solution;
Step B, metal is handled in lye;
Step C, it is pre-processed in the acid solution containing sulfuric acid;
Step D, using graphite plate as cathode, metal as anode, be put into containing sulfuric acid, phosphoric acid electrolyte in carry out it is straight
Galvanic electricity electrolysis, makes metal surface form layer oxide film, which is the micropore containing 20-200 nanometers;
Step E, the metal aoxidized is put into nano coating solution and is impregnated;
Step F, metal carries out protection processing in polyalkenyl phosphate.
The nano coating obtained through the above steps is present in the inside and top of oxidation film nano-pore, and nano coating energy
Well in conjunction with spray coating, good binding force is maintained, is illustrated below by way of specific embodiment.
Embodiment one:
The first step first cleans metal surface, specifically, by metal mass concentration be 45g/L sodium phosphate,
It is impregnated 8 minutes in the degreasing agent solution of sodium carbonate and sodium pyrophosphate mixed solution, temperature is set in 50 DEG C.
Second step is handled in lye, and aqueous slkali is a kind of NAOH solution, NAOH concentration 40g/L, after above-mentioned steps are handled
Metal place NAOH solution in 2 minutes, temperature control at 30 DEG C, further clean metal.
Third step, preprocess method in sulfuric acid solution, metal is put into the sulfuric acid solution, concentration 50g/L, is handled
Time 2 minutes, temperature was set in 20 DEG C, removed the films such as the oxide of metal surface.
4th step, electrochemical electrolysis processing, sets sulfuric acid concentration as 50g/L, in the solution of phosphoric acid 50/L, it is close to be passed through electric current
Degree is 0.03/cm2, and temperature controls 30 DEG C, carries out surface electrochemistry processing to metal, metal surface is made to form layer oxide film,
The oxidation film is the micropore containing 20-200 nanometers of diameter, and micropore is distributed as irregular distribution in metal surface.
5th step, metal nano coating treatment are molten by metal in nano coating solution in the nano coating solution
Liquid property of water-bearing polyurethane -6%, p diethylaminobenzoic acid rouge 13%, water 80%, impregnates 5 minutes, concentration 200ml/L, temperature polyvinyl alcohol 1%
20 DEG C of degree control, is incorporated in nano coating on oxidation film.
6th step, metal coating processing, the metal by surface with nano coating, which is put into polyalkenyl phosphate, impregnates 2 points
Clock, temperature are set in 20 DEG C, and polyalkenyl phosphoric acid ester concentration 100g/L obtains the protective layer of nano coating.
Embodiment two:
The first step, cleaning specially mix metal in sodium phosphate, sodium carbonate and the sodium pyrophosphate that mass concentration is 55g/L
It closes and is impregnated 5 minutes in the degreasing agent solution of solution, temperature 60 C cleans metal surface.
Second step is handled in lye, and in NAOH solution, NAOH concentration 60g/L, soaking time 1 minute, temperature was set as
50 DEG C, further to cleaning metal surface.
Third step is pre-processed in sulfuric acid solution, metal is put into the sulfuric acid solution, concentration 100g/L, when processing
Between 1 minute, 30 DEG C of temperature, remove the oxidation film of metal surface.
4th step, electrochemical electrolysis processing are 100g/L in sulfuric acid concentration, in the solution of phosphatase 11 00/L, it is close to be passed through electric current
Degree is 0.6A/cm2.Temperature is controlled at 60 DEG C, carries out surface electrochemistry processing to metal, and metal surface is made to form one layer of oxidation
Film, the oxidation film are the micropores containing 20-200 nanometers of diameter, and micropore is distributed as irregular distribution in metal surface.
5th step, metal nano coating treatment, in nano coating solution, nano coating solution weight ratio are as follows: aqueous poly- ammonia
Rouge 6%, polyvinyl alcohol 2%, p diethylaminobenzoic acid rouge 15%, water 77%, impregnate 1 minute, concentration 300ml/L, and temperature controls 40 DEG C, makes
Nano coating is incorporated on oxidation film.
6th step, metal coating processing, the metal by surface with nano coating, which is put into polyalkenyl phosphate, impregnates 1 point
Clock, 40 DEG C of temperature, polyalkenyl phosphoric acid ester concentration 100g/L obtains the protective layer of nano coating.
The metal handled through the above steps, since nano coating is present in the inside and top of oxidation film nano-pore, and
Nano coating can maintain good binding force well in conjunction with spray coating, and compared with prior art, the present invention can be mentioned significantly
Its high yield, has the advantages of cated binding force is obviously good than the prior art.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. metal-surface nano Coating Processes, which comprises the steps of:
A, metal surface is started the cleaning processing with cleaning solution;
B, metal is handled in lye;
C, it is pre-processed in the acid solution containing sulfuric acid;
D, using graphite plate as cathode, metal as anode, be put into containing sulfuric acid, phosphoric acid electrolyte in carry out direct current electricity
Solution makes metal surface form layer oxide film, which is the micropore containing 20-200 nanometers;
E, the metal aoxidized is put into nano coating solution and is impregnated;
F, metal carries out protection processing in polyalkenyl phosphate.
2. metal nano coating surface processing method according to claim 1, which is characterized in that the nano coating solution
Weight ratio be: aqueous polyurethane 5%-6%, polyvinyl alcohol 1%-2%, p diethylaminobenzoic acid rouge 13%-15%, water 77%-80%.
3. metal nano coating surface processing method according to claim 1, which is characterized in that clear in the step A
Journey is washed, specifically: by metal in sodium phosphate, sodium carbonate and the sodium pyrophosphate mixed solution that mass concentration is 45~55g/L
It is impregnated 5-8 minutes in degreasing agent solution, temperature is set as 50-60 DEG C.
4. metal nano coating surface processing method according to claim 1, which is characterized in that the alkali in the step B
Liquid treatment process, aqueous slkali therein are NAOH solution, NAOH concentration 40-60g/L, and metal impregnates 1-2 points in NAOH solution
Clock, time are 30-50 DEG C.
5. metal nano coating surface processing method according to claim 1, which is characterized in that the step C includes pre-
Processing, specifically: metal being put into the sulfuric acid solution, solution concentration 50-100g/L, soaking time 1-2 minutes, temperature
It is set as 20-30 DEG C.
6. metal nano coating surface processing method according to claim 1, which is characterized in that in the step D, including
Electrochemical electrolysis processing is specifically 50-100g/L in sulfuric acid concentration, is put into metal in the solution of phosphoric acid 50-100/L, sets
Being passed through current density is 0.03~0.6A/cm2, and temperature controls 30-60 DEG C.
7. metal nano coating surface processing method according to claim 1, which is characterized in that in the step E, receiving
It in rice coating solution, impregnates 1-5 minutes, concentration 200-300ml/L, temperature controls 20-40 DEG C.
8. metal nano coating surface processing method according to claim 1, which is characterized in that in the step F, metal
Protection processing, the metal by surface with nano coating, which is put into polyalkenyl phosphate, to be impregnated 1-2 minutes, wherein temperature setting
It is 20-40 DEG C, polyalkenyl phosphoric acid ester concentration 30-100g/L.
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Cited By (7)
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CN109609955A (en) * | 2019-01-21 | 2019-04-12 | 深圳市纳明特科技发展有限公司 | Magnesium alloy matrix surface T processing method |
CN110212124A (en) * | 2019-07-17 | 2019-09-06 | 池州市骏智机电科技有限公司 | A kind of battery cap and preparation method thereof based on blocky pole |
CN110246992A (en) * | 2019-07-17 | 2019-09-17 | 池州市骏智机电科技有限公司 | A kind of battery cover plate structure and preparation method thereof based on nanometer injection molding |
CN113684510A (en) * | 2021-08-16 | 2021-11-23 | 深圳市纳明特科技发展有限公司 | T treatment method for copper metal surface |
CN114182320A (en) * | 2021-12-08 | 2022-03-15 | 东莞市润纳实业有限公司 | Zirconium alloy surface treating agent and surface micropore treatment method |
CN114197026A (en) * | 2021-12-08 | 2022-03-18 | 东莞市润纳实业有限公司 | Zirconium alloy surface treatment process |
CN114232000A (en) * | 2021-12-16 | 2022-03-25 | 深圳市纳明特科技发展有限公司 | Titanium alloy surface treatment process |
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CN114232000B (en) * | 2021-12-16 | 2023-12-26 | 深圳市纳明特科技发展有限公司 | Titanium alloy surface treatment process |
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