CN114411134A - Antistatic color aluminum plate and production process thereof - Google Patents
Antistatic color aluminum plate and production process thereof Download PDFInfo
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- CN114411134A CN114411134A CN202210086961.3A CN202210086961A CN114411134A CN 114411134 A CN114411134 A CN 114411134A CN 202210086961 A CN202210086961 A CN 202210086961A CN 114411134 A CN114411134 A CN 114411134A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 72
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 238000000576 coating method Methods 0.000 claims abstract description 49
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 239000000126 substance Substances 0.000 claims abstract description 27
- 239000011231 conductive filler Substances 0.000 claims abstract description 23
- 239000002344 surface layer Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 36
- 239000000945 filler Substances 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052726 zirconium Inorganic materials 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical group [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 7
- 239000002904 solvent Substances 0.000 claims description 7
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 239000000049 pigment Substances 0.000 claims description 6
- TUSDEZXZIZRFGC-UHFFFAOYSA-N 1-O-galloyl-3,6-(R)-HHDP-beta-D-glucose Natural products OC1C(O2)COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC1C(O)C2OC(=O)C1=CC(O)=C(O)C(O)=C1 TUSDEZXZIZRFGC-UHFFFAOYSA-N 0.000 claims description 5
- 239000001263 FEMA 3042 Substances 0.000 claims description 5
- LRBQNJMCXXYXIU-PPKXGCFTSA-N Penta-digallate-beta-D-glucose Natural products OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-PPKXGCFTSA-N 0.000 claims description 5
- 238000007766 curtain coating Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000007761 roller coating Methods 0.000 claims description 5
- LRBQNJMCXXYXIU-NRMVVENXSA-N tannic acid Chemical compound OC1=C(O)C(O)=CC(C(=O)OC=2C(=C(O)C=C(C=2)C(=O)OC[C@@H]2[C@H]([C@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)[C@@H](OC(=O)C=3C=C(OC(=O)C=4C=C(O)C(O)=C(O)C=4)C(O)=C(O)C=3)O2)OC(=O)C=2C=C(OC(=O)C=3C=C(O)C(O)=C(O)C=3)C(O)=C(O)C=2)O)=C1 LRBQNJMCXXYXIU-NRMVVENXSA-N 0.000 claims description 5
- 229940033123 tannic acid Drugs 0.000 claims description 5
- 235000015523 tannic acid Nutrition 0.000 claims description 5
- 229920002258 tannic acid Polymers 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 229920000180 alkyd Polymers 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 3
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 235000007686 potassium Nutrition 0.000 claims description 2
- 238000009500 colour coating Methods 0.000 abstract description 7
- 238000007739 conversion coating Methods 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 abstract description 6
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- BJZIJOLEWHWTJO-UHFFFAOYSA-H dipotassium;hexafluorozirconium(2-) Chemical compound [F-].[F-].[F-].[F-].[F-].[F-].[K+].[K+].[Zr+4] BJZIJOLEWHWTJO-UHFFFAOYSA-H 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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- 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
- C23C22/06—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 using aqueous acidic solutions with pH less than 6
- C23C22/34—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 using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/22—Light metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to an antistatic color aluminum plate and a production process thereof, wherein the color aluminum plate comprises the following components: the chemical conversion coating is adhered to the front surface and the back surface of the aluminum substrate, the organic coating is adhered to the surface layer of the chemical conversion coating, conductive filler is contained in the coating of the organic coating, the chemical conversion coating is formed on the surface of the pretreated clean aluminum substrate, the color coating is coated after the chemical conversion coating is formed, and the conductive filler is contained in the color coating, so that the surface conductivity can be increased, the surface resistance is reduced, and static electricity is effectively prevented.
Description
Technical Field
The invention relates to the field of color-coated aluminum plates, in particular to an antistatic color aluminum plate and a production process thereof.
Background
The color aluminum plate is a novel material, has certain decorativeness, and the decorative effect is fashionable and generous, so fitment is widely used at present, and because the performance of color aluminum plate is more advantageous, simple to operate, also difficult damage, the market that has replaced plastic panels can be said, has become common fitment material.
Most of coatings of color plates are high polymer materials, most of the coatings are excellent electrical insulating materials, the surface resistance is high, a large amount of static charges are easily accumulated, the static effect is easy to cause accidents such as fire and explosion, and dust particles are easy to accumulate on the surface of a steel plate, so people are dedicated to the development of anti-static color plates.
Contents of the invention
In order to solve the above problems, the present invention provides an antistatic color aluminum sheet, comprising: the coating comprises an aluminum substrate, a chemical conversion film and an organic coating, wherein the chemical conversion film is adhered to the front surface and the back surface of the aluminum substrate, the organic coating is adhered to the surface layer of the chemical conversion film, the coating of the organic coating contains conductive filler, the surface of the aluminum substrate can be protected by adopting the chemical conversion film, the adhesion performance between the color coating and the aluminum substrate can be improved, and the surface resistance can be reduced by mixing the conductive filler in the coating.
Furthermore, the chemical conversion layer is a zirconium conversion film, the zirconium conversion film has good compactness and a thickness of 0.5-4 microns.
Furthermore, the organic coating is solvent-based paint, and the base material of the organic coating is any one of alkyd resin, polyester and silicon-modified polyester.
Furthermore, the conductive filler is a metal filler, a carbon filler or a metal oxide filler, and can effectively increase the conductivity of the conductive filler.
A production process of an antistatic colored aluminum plate comprises the following steps: s1, cleaning and preprocessing the substrate, removing grease and oxides on the surface of the substrate, and obtaining a clean aluminum substrate; s2, preparing a chemical conversion film, and forming a compact primer on the surface of a clean aluminum substrate; s3, rapidly washing the plate and drying the surface of the plate to prepare an organic coating containing conductive filler, preparing a color finish on the aluminum substrate, increasing the adhesion between the color finish and the aluminum substrate through a primer, and effectively avoiding static electricity due to conductivity.
Further, in S1, the cleaning and pre-treating of the substrate includes: cleaning with alkali liquor, rinsing, wherein in the cleaning process of the alkali liquor, the temperature of the alkali liquor is 50-60 ℃, the cleaning time is 90min, a sodium metasilicate cleaning agent is added into the alkali liquor, the alkali liquor is sprayed and rinsed with deionized water, and the alkali liquor is squeezed and dried after rinsing.
Further, S2, preparation of a chemical conversion coating: soaking the aluminum plate after S1 in the conversion solution at 30-40 deg.C for 1-10 min; the conversion solution contains tannic acid, magnesium sulfate and potassium fluorozirconate, the pH value is adjusted to 3-4 by adopting ammonia water or sodium hydroxide, a film layer of the chemical conversion film contains AL, Zr, Mg and Si elements, and the tannic acid can improve the corrosion resistance of the passivation film.
And further, S3, rapidly washing the plate and performing surface drying treatment, washing the plate with deionized water after S2 is completed, and drying the plate with a drying oven at the drying temperature of 100-.
Furthermore, the preparation of the organic coating adopts a roller coating mode or curtain coating, is suitable for solvent-based coating, and contains 15-20% of pigment, 5% of titanium dioxide, water, 1.5% of film-forming assistant, 0.5% of leveling agent and 10% of conductive filler.
Compared with the prior art, the invention has the following beneficial effects: a chemical conversion film is formed on the surface of a pretreated clean aluminum substrate, a color coating is coated after the chemical conversion film is formed, and the color coating contains conductive filler, so that the surface conductivity can be increased, the surface resistance is reduced, and the static electricity is effectively prevented.
Drawings
FIG. 1 is a structural diagram of a color aluminum plate of the present invention, in which 1 is an aluminum substrate; 2. a chemical conversion film;
3. and (3) organic coating.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1, an antistatic colored aluminum sheet comprises: the coating on the back surface of the aluminum substrate and the coating on the front surface are the same or different, if only a single-sided color aluminum plate is needed, the back surface does not need to be coated; the antistatic principle of the conductive filler is as follows: the conductive fillers contact with each other to form a continuous network chain, and current carriers can move on the network chain, so that the coating is antistatic.
Furthermore, the chemical conversion layer is a zirconium conversion film, the conversion film with the thickness of 0.5-4 microns is formed on the surface of the aluminum substrate in a soaking mode, the zirconium conversion film has good tightness, and the corrosion resistance of the aluminum substrate and the adhesion between the aluminum substrate and the organic coating can be effectively improved by adopting the zirconium conversion film.
Furthermore, the organic coating is solvent-based coating, the base material of the organic coating is any one of alkyd resin, polyester and silicon-modified polyester, and the organic coating also contains pigment, filler and additive components, so that the organic coating has a good protection effect on the aluminum substrate, the beautifying and the decoration of the appearance are realized through the pigment, the solvent-based coating is coated on the surface of the aluminum substrate in a roller coating mode or a curtain coating mode, and the solvent-based coating can be tightly adhered to the surface of the aluminum substrate through a chemical conversion film.
Furthermore, the conductive filler is metal filler, the metal filler can be nickel powder or copper powder, copper has good conductivity, and nickel has strong corrosion resistance and can be used in an environment with high humidity.
The production process of the antistatic color aluminum plate can produce the antistatic color aluminum plate, and comprises the following steps: s1, cleaning and preprocessing the substrate, removing grease and oxides on the surface of the substrate, and obtaining a clean aluminum substrate; s2, preparing a chemical conversion film, and forming a compact primer on the surface of a clean aluminum substrate; s3, rapidly washing the plate and drying the surface of the plate, preparing an organic coating containing a conductive filler, preparing a color finish on the aluminum substrate, increasing the adhesion between the aluminum substrate and the color finish through a primer, and effectively avoiding static electricity due to conductivity, wherein the aluminum substrate needs to be dried and cooled after the color coating is finished.
Further, in S1, cleaning and pretreating the aluminum substrate to remove surface dust, rust and oil stain, wherein the surface dust is cleaned by soaking in warm water at 35-38 ℃ containing a surfactant, washing the detergent with clean water after soaking, washing with acid to remove surface rust, soaking in hydrochloric acid according to the rust condition, washing the surface hydrochloric acid with clean water, washing the substrate with clean water, soaking in alkaline solution at 50-60 ℃ for 90min, adding sodium metasilicate as the cleaning agent into the alkaline solution to further improve the brightness of the surface of the aluminum substrate, spray rinsing with deionized water to remove the cleaning solution, and squeezing and air drying the substrate after rinsing.
Further, S2, preparation of a chemical conversion coating: soaking the aluminum substrate subjected to the step S1 in a conversion solution at the temperature of 30-40 ℃ for 1-10min, wherein the conversion solution contains tannic acid, magnesium sulfate and potassium fluozirconate, the pH value is adjusted to 3-4 by adopting ammonia water or sodium hydroxide, a film layer of the chemical conversion film contains Al, Zr, Mg and Si elements, and the tannic acid can improve the corrosion resistance of the passivation film; by adopting the step, a compact conversion coating can be formed on the surface of the aluminum substrate, and the aluminum substrate has certain protection effects of corrosion resistance and oxidation resistance.
And further, S3, rapidly washing the aluminum substrate and performing surface drying treatment, washing the plate by using deionized water after S2 is completed, and drying by using a drying oven at the drying temperature of 100-.
Furthermore, the preparation of the organic coating adopts a roller coating mode or a curtain coating mode, the roller coating mode or the curtain coating mode is suitable for solvent-based coatings, the coating contains 15-20% of pigment, 5% of titanium dioxide, water, 1.5% of film-forming assistant, 0.5% of flatting agent and 10% of conductive filler, and the color retention agent can be added to maintain the color and luster degree.
By adopting the production process of the antistatic color aluminum plate, the aluminum substrate is cleaned and pretreated to remove dust, corrosion and oil dirt on the surface, and the dried aluminum substrate is placed into the conversion solution to be soaked, so that a compact zirconium conversion film is formed on the surface of the aluminum substrate, the aluminum substrate can be protected, the corrosion resistance effect is improved, the adhesiveness between the aluminum substrate and an organic coating is also improved, the organic coating contains resin or polyester, pigment and filler components, the organic coating has a protection effect and an attractive effect, and meanwhile, the conductive filler in the filler effectively reduces the surface resistance of the aluminum substrate and improves the antistatic effect.
Example 2:
the organic coating on the surface of the aluminum substrate can also be selected from carbon-based fillers, the carbon-based fillers are low in cost, small in density and rich in source, and the carbon-based fillers can be selected from graphite and carbon black or graphite: the ratio of carbon black is 4:1, so that the conductive structure is more compact.
The carbon-based filler is easy to absorb moisture and gas, and the conductivity of the organic coating is easy to reduce, so that the carbon-based filler needs to be dried and pretreated before use, and the moisture on the surface of the filler is dried in a vacuum drying mode, so that the conductivity of the coating is enhanced.
Example 3:
in the organic coating on the surface of the aluminum substrate, the antistatic filler is a metal oxide filler, such as an oxide containing tin or zinc, so that the organic coating has the advantages of good impermeability, light color of the metal oxide conductive filler and bright color compared with a carbon black conductive filler.
By adopting the antistatic color aluminum plate, the conductive filler is added into the color coating, so that the color aluminum plate has a good conductive effect, and the conductive filler of a metal system, a metal oxide system or a carbon system is selected according to the actual conditions of cost, color requirements and the like.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive step, which shall fall within the scope of the appended claims.
Claims (9)
1. An antistatic colored aluminum sheet, comprising: the aluminum substrate comprises an aluminum substrate, a chemical conversion film and an organic coating, wherein the chemical conversion film is adhered to the front surface and the back surface of the aluminum substrate, the organic coating is adhered to the surface layer of the chemical conversion film, and the coating of the organic coating contains conductive filler.
2. The antistatic colored aluminum sheet of claim 1, wherein: the chemical conversion layer is a zirconium conversion film with the thickness of 0.5-4 microns.
3. The antistatic colored aluminum sheet of claim 1, wherein: the organic coating is solvent-based paint, and the base material of the organic coating is any one of alkyd resin, polyester and silicon-modified polyester.
4. The antistatic colored aluminum sheet of claim 1, wherein: the conductive filler is selected from metal filler, carbon filler or metal oxide filler.
5. The production process of the antistatic colored aluminum plate is characterized by comprising the following steps of: the method comprises the following steps: s1, cleaning and preprocessing the substrate; s2, preparing a chemical conversion film; s3, quickly washing the plate and drying the surface of the plate to prepare the organic coating containing the conductive filler.
6. The production process of the antistatic colored aluminum plate as claimed in claim 5, wherein the production process comprises the following steps: in S1, the cleaning and pre-treating of the substrate comprises: cleaning with alkali liquor, rinsing, wherein in the cleaning process of the alkali liquor, the temperature of the alkali liquor is 50-60 ℃, the cleaning time is 90min, a sodium metasilicate cleaning agent is added into the alkali liquor, the alkali liquor is sprayed and rinsed with deionized water, and the alkali liquor is squeezed and dried after rinsing.
7. The production process of the antistatic colored aluminum plate as claimed in claim 5, wherein the production process comprises the following steps: s2, preparation of a chemical conversion film: soaking the aluminum plate after S1 in the conversion solution at 30-40 deg.C for 1-10 min; the conversion solution contains tannic acid, magnesium sulfate and potassium fluozirconate, the pH value is adjusted to 3-4 by adopting ammonia water or sodium hydroxide, and a film layer of the chemical conversion film contains Al, Zr, Mg and Si elements.
8. The production process of the antistatic colored aluminum plate as claimed in claim 5, wherein the production process comprises the following steps: and S3, rapidly washing the plate and carrying out surface drying treatment, washing the plate by using deionized water after S2 is finished, and drying the plate by using a drying box at the drying temperature of 100 ℃ and 110 ℃ for 2 min.
9. The production process of the antistatic colored aluminum plate as claimed in claim 5, wherein the production process comprises the following steps: the organic coating is prepared by adopting a roller coating mode or curtain coating, and the coating contains 15-20% of pigment, 5% of titanium dioxide, water, 1.5% of film-forming assistant, 0.5% of flatting agent and 10% of conductive filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086961.3A CN114411134A (en) | 2022-01-25 | 2022-01-25 | Antistatic color aluminum plate and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Application publication date: 20220429 |