CN114775012A - Surface coloring agent for aluminum alloy processing - Google Patents
Surface coloring agent for aluminum alloy processing Download PDFInfo
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- CN114775012A CN114775012A CN202210479124.7A CN202210479124A CN114775012A CN 114775012 A CN114775012 A CN 114775012A CN 202210479124 A CN202210479124 A CN 202210479124A CN 114775012 A CN114775012 A CN 114775012A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 49
- 239000003086 colorant Substances 0.000 title claims abstract description 35
- 238000012545 processing Methods 0.000 title claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000004040 coloring Methods 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 10
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 10
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 10
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003755 preservative agent Substances 0.000 claims abstract description 7
- 230000002335 preservative effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 238000003756 stirring Methods 0.000 claims description 20
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical group [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 14
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 claims description 13
- IYDGMDWEHDFVQI-UHFFFAOYSA-N phosphoric acid;trioxotungsten Chemical compound O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.O=[W](=O)=O.OP(O)(O)=O IYDGMDWEHDFVQI-UHFFFAOYSA-N 0.000 claims description 13
- 239000001632 sodium acetate Substances 0.000 claims description 13
- 235000017281 sodium acetate Nutrition 0.000 claims description 13
- 239000004334 sorbic acid Substances 0.000 claims description 13
- 235000010199 sorbic acid Nutrition 0.000 claims description 13
- 229940075582 sorbic acid Drugs 0.000 claims description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 13
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical group [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical group [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 10
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 10
- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical group C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- VHVPQPYKVGDNFY-DFMJLFEVSA-N 2-[(2r)-butan-2-yl]-4-[4-[4-[4-[[(2r,4s)-2-(2,4-dichlorophenyl)-2-(1,2,4-triazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]piperazin-1-yl]phenyl]-1,2,4-triazol-3-one Chemical compound O=C1N([C@H](C)CC)N=CN1C1=CC=C(N2CCN(CC2)C=2C=CC(OC[C@@H]3O[C@](CN4N=CN=C4)(OC3)C=3C(=CC(Cl)=CC=3)Cl)=CC=2)C=C1 VHVPQPYKVGDNFY-DFMJLFEVSA-N 0.000 claims description 2
- 240000006891 Artemisia vulgaris Species 0.000 claims description 2
- 235000003261 Artemisia vulgaris Nutrition 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- RFHAOTPXVQNOHP-UHFFFAOYSA-N fluconazole Chemical compound C1=NC=NN1CC(C=1C(=CC(F)=CC=1)F)(O)CN1C=NC=N1 RFHAOTPXVQNOHP-UHFFFAOYSA-N 0.000 claims description 2
- 229960004884 fluconazole Drugs 0.000 claims description 2
- 229960004130 itraconazole Drugs 0.000 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- WVDDGKGOMKODPV-ZQBYOMGUSA-N phenyl(114C)methanol Chemical compound O[14CH2]C1=CC=CC=C1 WVDDGKGOMKODPV-ZQBYOMGUSA-N 0.000 claims description 2
- 229960004889 salicylic acid Drugs 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 14
- 238000004043 dyeing Methods 0.000 abstract description 13
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 abstract description 13
- 239000000654 additive Substances 0.000 abstract description 7
- 239000002105 nanoparticle Substances 0.000 abstract description 5
- 150000003839 salts Chemical class 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 3
- 230000000740 bleeding effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 241001268993 Heterochrosis Species 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 19
- 238000012360 testing method Methods 0.000 description 6
- 239000000975 dye Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to the technical field of aluminum alloy surface processing, in particular to a surface coloring agent for aluminum alloy processing and a preparation method thereof. The aluminum alloy processing surface colorant is composed of the following raw materials in parts by weight: 20-30 parts of acid black, 6-10 parts of chromate, 3-6 parts of rare earth metal carbide, 5-9 parts of rare earth metal oxide, 3-5 parts of pH stabilizer, 6-12 parts of coloring stabilizer, 1-2 parts of preservative and 85-95 parts of water. According to the invention, the nano particles and the soluble salt are added and mixed to be used as the composite additive to be added into the coloring agent, so that the dyeing effect and uniformity of micro-arc oxidation can be improved, the dyeing efficiency and product yield of micro-arc oxidation are improved, the problems of bleeding, heterochrosis and the like in the micro-arc oxidation process are solved, and the aluminum alloy has a good appearance effect, good durability and long service life.
Description
Technical Field
The invention relates to the technical field of aluminum alloy surface processing, in particular to a surface coloring agent for aluminum alloy processing and a preparation method thereof.
Background
The micro-arc oxidation technology is a novel surface treatment technology, and a layer of oxide ceramic film grows in situ on the surface of the aluminum alloy under the action of high-temperature and high-voltage electric arcs. The ceramic oxide membrane prepared by micro-arc oxidation has excellent comprehensive performance, and the corrosion resistance, the friction resistance, the hardness and the like are obviously improved. The oxide ceramic membrane prepared by micro-arc oxidation grows in situ, so the binding force is high. Compared with anodic oxidation, the electrolyte used in micro-arc oxidation has no pollution to the environment, and the green production is really realized.
The micro-arc oxidation additives can be divided into 3 types of soluble salt additives, nano-particle additives and composite additives. Soluble salts not only improve film properties, but are also commonly used as colorants to color aluminum alloy workpieces. The nano particles have the functions of friction reduction and self repair, and are often used for filling the pores of a micro-arc oxidation film layer so as to strengthen the film layer. In recent years, with the development of nanotechnology, some researchers began to research 2 or more kinds of nanoparticles mixed with soluble salts as composite additives to achieve better additive effects on enhancing corrosion resistance and wear resistance of film layers.
Based on the situation, the invention provides a surface coloring agent for aluminum alloy processing and a preparation method thereof, which can effectively solve the problems.
Disclosure of Invention
The invention aims to provide a surface coloring agent for processing an aluminum alloy and a preparation method thereof.
In order to achieve the purpose, the invention provides a surface colorant for aluminum alloy processing, which consists of the following raw materials in parts by weight: 20-30 parts of acid black, 6-10 parts of chromate, 3-6 parts of rare earth metal carbide, 5-9 parts of rare earth metal oxide, 3-5 parts of pH stabilizer, 6-12 parts of coloring stabilizer, 1-2 parts of preservative and 85-95 parts of water.
Preferably, the acid black is acid black 109.
Preferably, the chromate is potassium chromate.
Preferably, the rare earth metal carbide is tantalum carbide.
Preferably, the rare earth metal oxide is cerium oxide.
Preferably, the rare earth metal oxide or rare earth metal carbide is of a nano-scale.
Preferably, the pH stabilizer is sodium acetate.
Preferably, the color stabilizer is a combination of phosphotungstic acid and ammonium tungstate.
Preferably, the preservative comprises at least one of sorbic acid, fluconazole, itraconazole, mugwort, benzyl alcohol, benzoic acid, salicylic acid, and boric acid.
Preferably, the aluminum alloy processing surface colorant is composed of the following raw materials in parts by weight: 20 parts of acid black, 6 parts of chromate, 3 parts of rare earth metal carbide, 5 parts of rare earth metal oxide, 3 parts of pH stabilizer, 6 parts of coloring stabilizer, 1 part of preservative and 95 parts of water.
Preferably, the aluminum alloy processing surface colorant is composed of the following raw materials in parts by weight: 30 parts of acid black, 10 parts of chromate, 6 parts of rare earth metal carbide, 9 parts of rare earth metal oxide, 5 parts of pH stabilizer, 12 parts of coloring stabilizer, 2 parts of preservative and 85 parts of water.
The invention also provides a preparation method of the aluminum alloy processing surface colorant, which comprises the following steps:
(1) mixing acid black 109, potassium chromate, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1000-1200 rpm for 20-30 min at 70-75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 15-20 min at 70-75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the nano particles and the soluble salt are added and mixed to be used as the composite additive to be added into the coloring agent, so that the dyeing efficiency and uniformity of micro-arc oxidation can be improved, the dyeing effect and product yield of micro-arc oxidation are improved, the problems of color bleeding, color variation and the like in the dyeing process are solved, and the aluminum alloy has a good appearance effect, good durability and long service life.
2. The raw materials of the invention are sufficient in China and proper in price, so that the large-scale production of the invention is not limited by too high cost; meanwhile, the preparation method is simple, the total production cost is low, and the industrial large-scale production is facilitated.
Detailed Description
Example 1
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109, potassium chromate, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1000rpm for 30min at 70 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 20min at 70 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Example 2
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109, potassium chromate, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1200rpm for 20min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 15min at 75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Example 3
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109, potassium chromate, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1200rpm for 30min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring at 75 ℃ for 20 min;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Comparative example 1
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109 and potassium chromate, adding water, dispersing and suspending, and stirring at 1200rpm at 75 ℃ for 30 min;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring at 75 ℃ for 20 min;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Comparative example 2
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1200rpm for 30min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 20min at the temperature of 75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Comparative example 3
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109 and nano cerium oxide, adding water to disperse and suspend, and stirring at 1200rpm for 30min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 20min at the temperature of 75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Comparative example 4
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) mixing acid black 109 and nano tantalum carbide, adding water to disperse and suspend, and stirring at 1200rpm for 30min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring at 75 ℃ for 20 min;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
Comparative example 5
The specific raw materials were weighed as in table 1, and the preparation steps were as follows:
(1) adding water into acid black 109, dispersing and suspending, and stirring at 1200rpm for 30min at 75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 20min at the temperature of 75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
TABLE 1
| Kind of material | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 |
| Acid black 109 | 30 | 25 | 20 | 30 | 30 | 30 | 30 | 30 |
| Potassium chromate | 10 | 10 | 6 | 10 | / | / | / | / |
| Nano tantalum carbide | 6 | 4 | 3 | / | 6 | / | 6 | / |
| Nano cerium oxide | 9 | 6 | 5 | / | 9 | 9 | / | / |
| Sodium acetate (NaCI) | 5 | 4 | 3 | 5 | 5 | 5 | 5 | 5 |
| Phosphotungstic acid | 8 | 6 | 4 | 8 | 8 | 8 | 8 | 8 |
| Ammonium tungstate | 4 | 3 | 2 | 4 | 4 | 4 | 4 | 4 |
| Sorbic acid | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 |
| Water (I) | 85 | 90 | 95 | 85 | 85 | 85 | 85 | 85 |
Example 4 testing of aluminum alloy Properties
The dyeing method of the aluminum alloy comprises the following steps: the aluminum alloy plates are subjected to micro-arc oxidation by adopting the embodiments 1-3 and the comparative examples 1-3, a constant current mode is adopted, the current density is 20A/dm 2, the frequency is 500 Hz, the duty ratio is 8.5%, the micro-arc oxidation is 15min, the dyeing temperature is 60 ℃, and the electrolyte is 12 g/L of sodium hexametaphosphate plus 6 g/L of sodium silicate.
And (3) testing the dyeing defective rate: the aluminum alloy sheets colored with the coloring dyes obtained in examples 1 to 3 and comparative examples 1 to 3 were observed for the number of flow marks, white spots and mottles per 100 pieces and recorded.
Dyeing color deviation degree test: 100 pieces of aluminum alloy plates colored by using the coloring dyes prepared in the examples 1 to 3 and the comparative examples 1 to 3 are compared with a standard color plate after each coloring, the aluminum alloy plate is qualified if the comparison result of the color of the aluminum alloy in the standard color plate is black, and is unqualified if the color of the aluminum alloy deviates from black, and the number of the unqualified aluminum alloy plates is recorded.
And (3) dyeing rate test: 100 pieces of each of the aluminum alloy sheets colored with the coloring dyes obtained in examples 1 to 3 and comparative examples 1 to 3 were dyed, and then the aluminum alloy sheets were measured with a color measuring instrument, and the L values were recorded and averaged; the L value represents the depth after coloring, under the same dyeing time condition, the smaller the L value is, the faster the dyeing speed is, and the larger the L value is, the slower the dyeing speed is.
The test results are shown in Table 2.
Table 2 results of performance testing
| Flow marks, whitening and mottling | Number of color deviation degree failures | Value of L | |
| Example 1 | 0 | 2 | 22.3 |
| Example 2 | 0 | 1 | 23.4 |
| Example 3 | 0 | 1 | 22.8 |
| Comparative example 1 | 6 | 15 | 92.5 |
| Comparative example 2 | 0 | 31 | 44.8 |
| Comparative example3 | 0 | 22 | 57.2 |
| Comparative example 4 | 0 | 25 | 62.7 |
| Comparative example 5 | 18 | 20 | 75.4 |
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The surface colorant for aluminum alloy processing is characterized by comprising the following raw materials in parts by weight: 20-30 parts of acid black, 6-10 parts of chromate, 3-6 parts of rare earth metal carbide, 5-9 parts of rare earth metal oxide, 3-5 parts of pH stabilizer, 6-12 parts of coloring stabilizer, 1-2 parts of preservative and 85-95 parts of water.
2. The surface colorant for aluminum alloy processing according to claim 1, wherein the acid black is acid black 109.
3. A surface colorant for aluminum alloy processing according to claim 1, wherein said chromate is potassium chromate.
4. A surface colorant for aluminum alloy processing according to claim 1, wherein said rare earth metal carbide is tantalum carbide.
5. The surface colorant for aluminum alloy processing according to claim 1, wherein the rare earth metal oxide is cerium oxide.
6. The surface colorant for aluminum alloy working according to claim 1, wherein the rare earth metal oxide or rare earth metal carbide is of a nano-scale.
7. The surface colorant for aluminum alloy processing according to claim 1, wherein the pH stabilizer is sodium acetate; the coloring stabilizer is a combination of phosphotungstic acid and ammonium tungstate.
8. A surface colorant for aluminum alloy processing as set forth in claim 1, wherein said corrosion inhibitor comprises at least one of sorbic acid, fluconazole, itraconazole, mugwort, benzyl alcohol, benzoic acid, salicylic acid, and boric acid.
9. The surface colorant for aluminum alloy processing according to claim 1, wherein the surface colorant for aluminum alloy processing is composed of the following raw materials in parts by weight: 20 parts of acid black, 6 parts of chromate, 3 parts of rare earth metal carbide, 5 parts of rare earth metal oxide, 3 parts of pH stabilizer, 6 parts of coloring stabilizer, 1 part of preservative and 95 parts of water.
10. A method for preparing the surface colorant for aluminum alloy working according to any one of claims 1 to 9, characterized by comprising the steps of:
(1) mixing acid black 109, potassium chromate, nano tantalum carbide and nano cerium oxide, adding water to disperse and suspend, and stirring at 1000-1200 rpm for 20-30 min at 70-75 ℃;
(2) adding phosphotungstic acid and ammonium tungstate into the mixed solution obtained in the step (1), and stirring for 15-20 min at 70-75 ℃;
(3) and (3) adding sodium hydroxide or acetic acid into the mixed liquid obtained in the step (2), adjusting the pH value to 5.0-6.0, and adding sodium acetate and sorbic acid to obtain the aluminum alloy processing surface coloring agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210479124.7A CN114775012A (en) | 2022-05-05 | 2022-05-05 | Surface coloring agent for aluminum alloy processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210479124.7A CN114775012A (en) | 2022-05-05 | 2022-05-05 | Surface coloring agent for aluminum alloy processing |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1429928A (en) * | 2001-12-27 | 2003-07-16 | 关西涂料株式会社 | Colouring covering film forming method for dluminium material |
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| CN108707943A (en) * | 2018-05-27 | 2018-10-26 | 中南大学 | A kind of micro-arc oxidation electrolyte and its application on preparing high surface hardness aluminium alloy plate |
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| CN108707943A (en) * | 2018-05-27 | 2018-10-26 | 中南大学 | A kind of micro-arc oxidation electrolyte and its application on preparing high surface hardness aluminium alloy plate |
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