CN107511312A - A kind of fluorocarbon-sprayed method of aluminium alloy extrusions - Google Patents
A kind of fluorocarbon-sprayed method of aluminium alloy extrusions Download PDFInfo
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- CN107511312A CN107511312A CN201710602950.5A CN201710602950A CN107511312A CN 107511312 A CN107511312 A CN 107511312A CN 201710602950 A CN201710602950 A CN 201710602950A CN 107511312 A CN107511312 A CN 107511312A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/546—No clear coat specified each layer being cured, at least partially, separately
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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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
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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
- C23C22/78—Pretreatment of the material to be coated
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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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/20—Metallic substrate based on light metals
- B05D2202/25—Metallic substrate based on light metals based on Al
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
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Abstract
The invention discloses a kind of fluorocarbon-sprayed method of aluminium alloy extrusions, its processing step includes dedusting, ungrease treatment, acid-wash activation processing, galvanizing, chromium passivating processing, suspension polishing, spray-applied primer layer, for the first time solidification, spray-coating surface enamelled coating and solidified for second, and wherein spray-applied primer layer includes the raw material of following weight：10~20 parts of ethyl acetate, 30~60 parts of thermoplastic acrylic resin, 3~5 parts of diethylene glycol ether, 10~20 parts of magnesium powder, 0.5~3 part of propane diols first propyl ether, 0.5~2 part of diethylene glycol ether, 0.05~0.5 part of dimethyl silicone polymer；The percentage by weight of each raw material includes in spraying fluorine carbon finishing paint layer：The Nano titanium dioxide and aluminum oxide mixture 5~20%, fluorine carbon priming paint 20~30%, paint thinner 40~60% being modified through silane coupler surface.Aluminium alloy extrusions produced by the present invention, not only overall appearance quality is attractive in appearance, and has preferable antiseptic effect, and adhesive ability is strong, will not produce noxious material, free from environmental pollution.
Description
Technical field
The invention belongs to spraying coating process technical field, and in particular to a kind of fluorocarbon-sprayed method of aluminium alloy extrusions.
Background technology
Aluminium alloy is most widely used a kind of non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
Widely applied in manufacture, ship and chemical industry.With the rapid development of science and technology and industrial economy, to aluminum alloy welding
The demand of binding component is increasing.Aluminium alloy density is low, but intensity is higher, and near or above high-quality steel, plasticity is good, can add
Work has excellent electric conductivity, thermal conductivity into various section bars.Aluminium alloy extrusions is a kind of widely used building and ornament materials,
In existing technology, in order to prevent the oxidation of aluminium alloy extrusions and extend the service life of aluminium alloy extrusions, it is necessary to be closed in aluminium
The surface of metal type material carries out plastic-spraying processing to improve the performance of aluminium alloy, extends its service life, at present, at the plastic-spraying of aluminium alloy
Science and engineering skill is typically all to have efficient, environmental protection, economy, powder using the relatively advanced fluorocarbon-sprayed technology of technology, carbon spraying technology
The advantages that end is recyclable, it is the Perfected process for substituting liquid spray, still, in existing fluorocarbon-sprayed technical matters, due to
Using for spraying technology and sprayed on material is unreasonable so that existing fluorine carbon dust spraying coating process does not still obtain widely should
With on the one hand its reason is that fluorine carbon dust and aluminium shape surface adhesion are smaller, it is difficult to form the stronger fluororine-carbon coating of adhesive force；
On the other hand it is fluorocarbon resin price height, the aluminium section bar sprayed using common fluorine carbon dust is expensive, and client is not easily accepted by, and three
Be spraying after fluororine-carbon coating influenceed after long-term use by environmental factor, fluororine-carbon coating easily comes off, aluminium alloy extrusions
The easy corrosion failure in surface.Therefore, develop that a kind of technological process is simple, safety and environmental protection, spraying effect significantly and can strengthen
It is visitor that the binding ability of high coating and aluminum alloy surface has the fluorocarbon-sprayed method of the aluminium alloy extrusions of preferable antiseptic effect again
See what is needed.
The content of the invention
In order to solve problem present in background technology, it is an object of the invention to provide a kind of technological process is simple, peace
The binding ability that loopful is protected, spraying effect is notable and can strengthen high coating and aluminum alloy surface has preferable antiseptic effect again
The fluorocarbon-sprayed method of aluminium alloy extrusions.
A kind of fluorocarbon-sprayed method of aluminium alloy extrusions, is comprised the following steps that：
1. dedusting：Dust removal process is carried out to the dust of aluminium alloy section surface with 0.2~1MPa compressed air；
2. ungrease treatment：Aluminium alloy extrusions after step 1. dedusting is put into degreaser, at room temperature degreasing immersion 2~
5min, the degreaser include the raw material of following parts by weight：30~50 parts of sodium hydroxide, 15~30 parts of sodium metasilicate, diethanol amine 5
~20 parts, 800~1000 parts of water, again rinse aluminium alloy type timber-used clear water well after immersion, and the time of cleaning is 3~5min,
Moisture is dried after cleaning up；
3. acid-wash activation is handled：Aluminium alloy extrusions 2. step is handled after is put into pickle, 1~2min of soaking at room temperature, institute
Stating pickle includes the raw material of following parts by weight：50~80 parts of the concentrated nitric acid that mass fraction is 65%, mass fraction be 98% it is dense
20~30 parts of hydrofluoric acid that 20~30 parts of glacial acetic acid that 10~20 parts of sulfuric acid, mass fraction are 99%, mass fraction are 40%, water
1000~2000 parts, aluminium alloy type timber-used clear water is rinsed well again after the completion of immersion, the time of cleaning is 3~5min, cleaning
Moisture is dried after clean；
4. galvanizing：Aluminium alloy extrusions 3. step is handled after is put into hot dip zinc solution, is soaked under conditions of 50~60 DEG C
After steeping 5~6min, the stone acid sodium potassium of galvanizing solution weight 0.1~0.5% is added, is heated to 80 DEG C, is kept after 3~4min again
The % of galvanizing solution weight 0.5~1 oxidant is added, soaks 5~10min, it is again that aluminium alloy type timber-used is clear after the completion of immersion
Water is rinsed well, and the time of cleaning is 3~5min, dries moisture after cleaning up；
5. chromium-free deactivation is handled：Aluminium alloy extrusions 4. step is handled after is put into chromium-free passivation liquid, 3~5min of soak at room temperature
After take out aluminium alloy extrusions, can obtain after washing, drying thickness be 20~30um passivating film；The chromium-free passivation liquid bag
Include the raw material of following parts by weight：30~50 parts of nano titanium oxide, 10~20 parts of ammonium acid fluoride, 10~20 parts of ammonium fluoride, fluorine silicon
Sour 10~20 parts of sodium, 20~30 parts of polyurethane elastomer resin, 20~30 parts of acrylic resin, 10~20 parts of fluosilicic acid, three ethanol
1000~2000 parts of 3~5 parts of amine, 1~3 part of oxidant, 1~2 part of surfactant, 0.5~1 part of corrosion inhibiter and deionized water；
6. suspension polishing：Aluminium alloy extrusions 5. step is handled after is hung up, and its surface is polished to stingless sense；
7. spray-applied primer layer：Aluminium alloy extrusions 5. step is polished after is sent into spray booth, to its surface spraying fluorine carbon priming paint
Fluorine carbon prime coat is formed, the coating thickness for controlling fluorine carbon prime coat is 7~10 microns, and the fluorine carbon priming paint includes following weight
Raw material：10~20 parts of ethyl acetate, 30~60 parts of thermoplastic acrylic resin, 3~5 parts of diethylene glycol ether, magnesium powder 10~20
Part, 0.5~3 part of propane diols first propyl ether, 0.5~2 part of diethylene glycol ether, 0.05~0.5 part of dimethyl silicone polymer；
8. solidify for the first time：The aluminium alloy extrusions of fluorine carbon prime coat 5~10min of levelling, Ran Houfang at room temperature will be first coated with
Enter 5~10min of preheating in 40~60 DEG C of baking vessel, then be transferred in curing room and solidified, the temperature of solidification is 150~200
DEG C, hardening time is 20~30min；
9. spray-coating surface enamelled coating：Aluminium alloy extrusions 8. step is solidified after is fed again into paint spray booth, to its surface spraying fluorine carbon
Finish paint forms fluorine carbon finishing paint layer, and the coating thickness for controlling fluorine carbon finishing paint layer is 25~30 microns, and the preparation method of the finish paint is：
The Nano titanium dioxide being modified through silane coupler surface and aluminum oxide mixture are added in paint thinner, ultrasonic disperse
After well mixed, fluorocarbon radical material is added, can be prepared by after stirring, the percentage by weight bag of each raw material in the fluorine carbon finishing paint
Include：Nano titanium dioxide and aluminum oxide mixture 1~5%, fluorocarbon radical material 50~60% through the modification of silane coupler surface, apply
Expect diluent 35~45%；
10. second solidifies：The aluminium alloy extrusions of fluorine carbon finishing paint layer 5~10min of levelling at room temperature will be first coated with, is placed into
After preheating 5~10min in 40~60 DEG C of baking vessel, taking-up is transferred in curing room and solidified, the temperature of solidification for 200~
250 DEG C, hardening time is 20~30min, you can obtains finished product aluminium alloy extrusions.
The present invention is handled in fluorocarbon-sprayed preceding processing by degreaser, pickle, heat galvanizing liquid, chromium-free passivation liquid,
On the one hand the binding ability of coating and aluminum alloy surface is added, enhances section bar life-span and surface strength, it is permanent anti-oxidant, together
When on the surface of section bar form one layer of passivating film, the passivating film is effectively protected the surface of section bar, has stronger anti-oxidant
Property and corrosion resistance, can effectively improve the impermeabilisation ability of coating by spraying fluorine carbon priming paint, strengthen to aluminium alloy extrusions
Protection, the superficial layer of stable aluminium alloy, strengthens top coat layer and the adhesive force of aluminum alloy surface, ensures the uniform of top coat layer spraying
Property, the erosion of the pollutants such as external environment air, acid rain is avoided that by spray-coating surface enamelled coating, effectively improves aluminium alloy extrusions
Anti-ultraviolet performance, enhance oxidation resistance.Using section bar produced by the present invention, national standard GB/ is on the one hand reached
0 grade of standard of T9286 adhesive force, it is entirely capable of meeting use demand of the market to section bar, the coating of another aspect Surface of profile is not easy
Come off, though after long-term use, the film on its top layer is not easy to the phenomenon fallen off, meanwhile, after being sprayed using this technique
Product surface is highly polished, and outer light effect is good, and whole spraying coating process environmental protection murder by poisoning is small, can produce preferable social benefit and warp
Ji benefit, use easy to spread.
Embodiment
With reference to embodiment, the present invention is further illustrated, but the present invention is not any limitation as in any way,
Based on present invention teach that any conversion or replacement made, belong to protection scope of the present invention.
Embodiment 1：
The fluorocarbon-sprayed method of aluminium alloy extrusions described in the present embodiment 1, is comprised the following steps that：
1. dedusting：Dust removal process is carried out to the dust of aluminium alloy section surface with 0.2MPa compressed air；
2. ungrease treatment：Aluminium alloy extrusions after step 1. dedusting is put into degreaser, at room temperature degreasing immersion 2min, institute
Stating degreaser includes the raw material of following parts by weight：30 parts of sodium hydroxide, 30 parts of sodium metasilicate, 20 parts of diethanol amine, 800 parts of water, leaching
Aluminium alloy type timber-used clear water is rinsed well again after bubble, the time of cleaning is 3min, dries moisture after cleaning up；
3. acid-wash activation is handled：Aluminium alloy extrusions 2. step is handled after is put into pickle, soaking at room temperature 1min, the acid
Washing lotion includes the raw material of following parts by weight：10 parts of the concentrated sulfuric acid that 50 parts of the concentrated nitric acid that mass fraction is 65%, mass fraction are 98%,
Measure fraction be 99% 20 parts of glacial acetic acid, mass fraction be 40% 20 parts of hydrofluoric acid, 1000 parts of water, aluminium is closed again after the completion of immersion
Metal type timber-used clear water is rinsed well, and the time of cleaning is 3min, dries moisture after cleaning up；
4. galvanizing：Aluminium alloy extrusions 3. step is handled after is put into hot dip zinc solution, and the galvanizing is molten including following
The raw material of parts by weight：5 parts of zinc oxide, 10 parts of alkali, 500 parts of water, after soaking 5min under conditions of 50 DEG C, add hot dip zinc solution
The stone acid sodium potassium of weight 0.1%, 80 DEG C are heated to, the oxidant of galvanizing solution weight 0.5%, immersion are added after holding 3min
5min, aluminium alloy type timber-used clear water is rinsed well again after the completion of immersion, the time of cleaning is 3min, dries water after cleaning up
Point；
5. chromium-free deactivation is handled：Aluminium alloy extrusions 4. step is handled after is put into chromium-free passivation liquid, after soak at room temperature 3min
Aluminium alloy extrusions is taken out, the passivating film that thickness is 20~30um is can obtain after washing, drying；The chromium-free passivation liquid includes
The raw material of following parts by weight：30 parts of nano titanium oxide, 10 parts of ammonium acid fluoride, 10 parts of ammonium fluoride, 10 parts of prodan, polyurethane
It is 20 parts of elastic resin, 20 parts of acrylic resin, 10 parts of fluosilicic acid, 3 parts of triethanolamine, 1 part of oxidant, 1 part of surfactant, slow
1000 parts of 0.5 part of agent and deionized water are lost, the oxidant is the one or more in hydrogen peroxide, sodium peroxydisulfate, sodium hypochlorite
Combination；The surfactant be APG, Cocoamidopropyl betaine, fatty acid methyl ester ethoxylate one kind or
Multiple combinations；The corrosion inhibiter is phosphine carboxylic acid；
6. suspension polishing：Aluminium alloy extrusions 5. step is handled after is hung up, and its surface is polished to stingless sense；
7. spray-applied primer layer：Aluminium alloy extrusions 5. step is polished after is sent into spray booth, to its surface spraying fluorine carbon priming paint
Fluorine carbon prime coat is formed, the coating thickness for controlling fluorine carbon prime coat is 7 microns, and the fluorine carbon priming paint includes the original of following weight
Material：10 parts of ethyl acetate, 30 parts of thermoplastic acrylic resin, 3 parts of diethylene glycol ether, 10 parts of magnesium powder, propane diols first propyl ether
0.5 part, 0.5 part of diethylene glycol ether, 0.05 part of dimethyl silicone polymer；
8. solidify for the first time：The aluminium alloy extrusions of fluorine carbon prime coat levelling 5min at room temperature will be first coated with, is then placed in 40
DEG C baking vessel in preheat 5min, then be transferred in curing room and solidified, the temperature of solidification is 150 DEG C, and hardening time is
20min；
9. spray-coating surface enamelled coating：Aluminium alloy extrusions 8. step is solidified after is fed again into paint spray booth, to its surface spraying fluorine carbon
Finish paint forms fluorine carbon finishing paint layer, and the coating thickness for controlling fluorine carbon finishing paint layer is 25 microns, and the preparation method of the finish paint is：Will be through
The Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified are added in paint thinner, ultrasonic disperse mixing
After uniformly, fluorocarbon radical material is added, can be prepared by after stirring, the percentage by weight of each raw material includes in the fluorine carbon finishing paint：
The percentage by weight of each raw material includes in the fluorine carbon finishing paint：The Nano titanium dioxide and oxygen being modified through silane coupler surface
Change aluminium mixture 1%, fluorocarbon radical material 60%, paint thinner 39%；The coating sustained release agent is made up of toluene, acetone and butanone, institute
Toluene, acetone and butanone are stated with any than mixing；
The Nano titanium dioxide being modified through silane coupler surface and the preparation method of aluminum oxide mixture are：First by first
Silane coupler is added dropwise in alcohol after being mixed with water, stirring makes it well mixed after 1~3 hour, in the nanoscale two that addition prepares
Titanium oxide and aluminum oxide mixed powder, are put into 100~150 DEG C of baking oven after stirring and dry, ground after taking-up in mortar
Wear into little particle, you can obtain the Nano titanium dioxide and aluminum oxide mixture being modified through silane coupler surface；The warp
The percentage by weight of each raw material is in Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified：Silane is even
Join agent 1%, Nano titanium dioxide and aluminum oxide mixed powder 90%, methanol 8%, water 1%；
10. second solidifies：The aluminium alloy extrusions of fluorine carbon finishing paint layer levelling 10min at room temperature will be first coated with, places into 60 DEG C
Baking vessel in preheat 10min after, taking-up is transferred in curing room and solidified, and the temperature of solidification is 200 DEG C, and hardening time is
20min, you can obtain finished product aluminium alloy extrusions.
Embodiment 2
The fluorocarbon-sprayed method of aluminium alloy extrusions described in the present embodiment 2, is comprised the following steps that：
1. dedusting：Dust removal process is carried out to the dust of aluminium alloy section surface with 0.5MPa compressed air；
2. ungrease treatment：Aluminium alloy extrusions after step 1. dedusting is put into degreaser, at room temperature degreasing immersion 4min, institute
Stating degreaser includes the raw material of following parts by weight：40 parts of sodium hydroxide, 25 parts of sodium metasilicate, 15 parts of diethanol amine, 900 parts of water, leaching
Aluminium alloy type timber-used clear water is rinsed well again after bubble, the time of cleaning is 4min, dries moisture after cleaning up；
3. acid-wash activation is handled：Aluminium alloy extrusions 2. step is handled after is put into pickle, soaking at room temperature 2min, the acid
Washing lotion includes the raw material of following parts by weight：15 parts of the concentrated sulfuric acid that 70 parts of the concentrated nitric acid that mass fraction is 65%, mass fraction are 98%,
Mass fraction be 99% 25 parts of glacial acetic acid, mass fraction be 40% 25 parts of hydrofluoric acid, 1500 parts of water, again by aluminium after the completion of immersion
Alloy profile is rinsed well with clear water, and the time of cleaning is 4min, dries moisture after cleaning up；
4. galvanizing：Aluminium alloy extrusions 3. step is handled after is put into hot dip zinc solution, and the galvanizing is molten including following
The raw material of parts by weight：8 parts of zinc oxide, 15 parts of alkali, 750 parts of water, after soaking 6min under conditions of 55 DEG C, add hot dip zinc solution
The stone acid sodium potassium of weight 0.3%, 80 DEG C are heated to, the % of galvanizing solution weight 0.6 oxidant, leaching are added after holding 4min
8min is steeped, is again rinsed aluminium alloy type timber-used clear water well after the completion of immersion, the time of cleaning is 4min, is dried after cleaning up
Moisture；
5. chromium-free deactivation is handled：Aluminium alloy extrusions 4. step is handled after is put into chromium-free passivation liquid, after soak at room temperature 4min
Aluminium alloy extrusions is taken out, the passivating film that thickness is 20~30um is can obtain after washing, drying；The chromium-free passivation liquid includes
The raw material of following parts by weight：40 parts of nano titanium oxide, 15 parts of ammonium acid fluoride, 15 parts of ammonium fluoride, 15 parts of prodan, polyurethane
25 parts of elastic resin, 25 parts of acrylic resin, 15 parts of fluosilicic acid, 4 parts of triethanolamine, 2 parts of oxidant, 1.5 parts of surfactant,
1500 parts of 0.8 part of corrosion inhibiter and deionized water, the oxidant are hydrogen peroxide, sodium peroxydisulfate, one kind in sodium hypochlorite or more
Kind combination；The surfactant is APG, Cocoamidopropyl betaine, one kind of fatty acid methyl ester ethoxylate
Or multiple combinations；The corrosion inhibiter is phosphine carboxylic acid,；
6. suspension polishing：Aluminium alloy extrusions 5. step is handled after is hung up, and its surface is polished to stingless sense；
7. spray-applied primer layer：Aluminium alloy extrusions 5. step is polished after is sent into spray booth, to its surface spraying fluorine carbon priming paint
Fluorine carbon prime coat is formed, the coating thickness for controlling fluorine carbon prime coat is 8 microns, and the fluorine carbon priming paint includes the original of following weight
Material：15 parts of ethyl acetate, 40 parts of thermoplastic acrylic resin, 4 parts of diethylene glycol ether, 15 parts of magnesium powder, propane diols first propyl ether 2
Part, 1 part of diethylene glycol ether, 0.25 part of dimethyl silicone polymer；
8. solidify for the first time：The aluminium alloy extrusions of fluorine carbon prime coat levelling 8min at room temperature will be first coated with, is then placed in 50
DEG C baking vessel in preheat 8min, then be transferred in curing room and solidified, the temperature of solidification is 150 DEG C, and hardening time is
25min；
9. spray-coating surface enamelled coating：Aluminium alloy extrusions 8. step is solidified after is fed again into paint spray booth, to its surface spraying fluorine carbon
Finish paint forms fluorine carbon finishing paint layer, and the coating thickness for controlling fluorine carbon finishing paint layer is 25 microns, and the preparation method of the finish paint is：Will be through
The Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified are added in paint thinner, ultrasonic disperse mixing
After uniformly, fluorocarbon radical material is added, can be prepared by after stirring, the percentage by weight of each raw material includes in the fluorine carbon finishing paint：
The percentage by weight of each raw material includes in the fluorine carbon finishing paint：The Nano titanium dioxide and oxygen being modified through silane coupler surface
Change aluminium mixture 4%, fluorocarbon radical material 54%, paint thinner 42%；The coating sustained release agent is made up of toluene, acetone and butanone, institute
Toluene, acetone and butanone are stated with any than mixing；
The Nano titanium dioxide being modified through silane coupler surface and the preparation method of aluminum oxide mixture are：First by first
Silane coupler is added dropwise in alcohol after being mixed with water, stirring makes it well mixed after 1~3 hour, in the nanoscale two that addition prepares
Titanium oxide and aluminum oxide mixed powder, are put into 100~150 DEG C of baking oven after stirring and dry, ground after taking-up in mortar
Wear into little particle, you can obtain the Nano titanium dioxide and aluminum oxide mixture being modified through silane coupler surface；The warp
The percentage by weight of each raw material is in Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified：Silane is even
Join agent 5%, Nano titanium dioxide and aluminum oxide mixed powder 83%, methanol 10%, water 2%；
10. second solidifies：The aluminium alloy extrusions of fluorine carbon finishing paint layer levelling 8min at room temperature will be first coated with, places into 50 DEG C
Baking vessel in preheat 8min after, taking-up is transferred in curing room and solidified, and the temperature of solidification is 220 DEG C, and hardening time is
25min, you can obtain finished product aluminium alloy extrusions.
Embodiment 3：
The fluorocarbon-sprayed method of aluminium alloy extrusions described in the present embodiment 3, is comprised the following steps that：
1. dedusting：Dust removal process is carried out to the dust of aluminium alloy section surface with 1MPa compressed air；
2. ungrease treatment：Aluminium alloy extrusions after step 1. dedusting is put into degreaser, at room temperature degreasing immersion 5min, institute
Stating degreaser includes the raw material of following parts by weight：50 parts of sodium hydroxide, 30 parts of sodium metasilicate, 20 parts of diethanol amine, 1000 parts of water, leaching
Aluminium alloy type timber-used clear water is rinsed well again after bubble, the time of cleaning is 5min, dries moisture after cleaning up；
3. acid-wash activation is handled：Aluminium alloy extrusions 2. step is handled after is put into pickle, soaking at room temperature 2min, the acid
Washing lotion includes the raw material of following parts by weight：20 parts of the concentrated sulfuric acid that 80 parts of the concentrated nitric acid that mass fraction is 65%, mass fraction are 98%,
Mass fraction be 99% 30 parts of glacial acetic acid, mass fraction be 40% 30 parts of hydrofluoric acid, 2000 parts of water, again by aluminium after the completion of immersion
Alloy profile is rinsed well with clear water, and the time of cleaning is 5min, dries moisture after cleaning up；
4. galvanizing：Aluminium alloy extrusions 3. step is handled after is put into hot dip zinc solution, and the galvanizing is molten including following
The raw material of parts by weight：10 parts of zinc oxide, 20 parts of alkali, 800 parts of water, after soaking 6min under conditions of 60 DEG C, it is molten to add galvanizing
The stone acid sodium potassium of liquid weight 0.5%, 80 DEG C are heated to, the % of galvanizing solution weight 1 oxidant, leaching are added after holding 4min
10min is steeped, is again rinsed aluminium alloy type timber-used clear water well after the completion of immersion, the time of cleaning is 5min, is dried in the air after cleaning up
Solid carbon dioxide point；
5. chromium-free deactivation is handled：Aluminium alloy extrusions 4. step is handled after is put into chromium-free passivation liquid, after soak at room temperature 5min
Aluminium alloy extrusions is taken out, the passivating film that thickness is 20~30um is can obtain after washing, drying；The chromium-free passivation liquid includes
The raw material of following parts by weight：50 parts of nano titanium oxide, 20 parts of ammonium acid fluoride, 20 parts of ammonium fluoride, 20 parts of prodan, polyurethane
It is 30 parts of elastic resin, 30 parts of acrylic resin, 20 parts of fluosilicic acid, 5 parts of triethanolamine, 3 parts of oxidant, 2 parts of surfactant, slow
000 part of 1 part of agent and deionized water are lost, the oxidant is one or more groups in hydrogen peroxide, sodium peroxydisulfate, sodium hypochlorite
Close；The surfactant is APG, Cocoamidopropyl betaine, one kind or more of fatty acid methyl ester ethoxylate
Kind combination；The corrosion inhibiter is phosphine carboxylic acid；
6. suspension polishing：Aluminium alloy extrusions 5. step is handled after is hung up, and its surface is polished to stingless sense；
7. spray-applied primer layer：Aluminium alloy extrusions 5. step is polished after is sent into spray booth, to its surface spraying fluorine carbon priming paint
Fluorine carbon prime coat is formed, the coating thickness for controlling fluorine carbon prime coat is 10 microns, and the fluorine carbon priming paint includes the original of following weight
Material：20 parts of ethyl acetate, 60 parts of thermoplastic acrylic resin, 5 parts of diethylene glycol ether, 20 parts of magnesium powder, propane diols first propyl ether 3
Part, 2 parts of diethylene glycol ether, 0.5 part of dimethyl silicone polymer；
8. solidify for the first time：The aluminium alloy extrusions of fluorine carbon prime coat levelling 10min at room temperature will be first coated with, is then placed in 60
DEG C baking vessel in preheat 10min, then be transferred in curing room and solidified, the temperature of solidification is 200 DEG C, and hardening time is
30min；
9. spray-coating surface enamelled coating：Aluminium alloy extrusions 8. step is solidified after is fed again into paint spray booth, to its surface spraying fluorine carbon
Finish paint forms fluorine carbon finishing paint layer, and the coating thickness for controlling fluorine carbon finishing paint layer is 30 microns, and the preparation method of the finish paint is：Will be through
The Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified are added in paint thinner, ultrasonic disperse mixing
After uniformly, fluorocarbon radical material is added, can be prepared by after stirring, the percentage by weight of each raw material includes in the fluorine carbon finishing paint：
The percentage by weight of each raw material includes in the fluorine carbon finishing paint：The Nano titanium dioxide and oxygen being modified through silane coupler surface
Change aluminium mixture 5%, fluorocarbon radical material 60%, paint thinner 35%；The coating sustained release agent is made up of toluene, acetone and butanone, institute
Toluene, acetone and butanone are stated with any than mixing；
The Nano titanium dioxide being modified through silane coupler surface and the preparation method of aluminum oxide mixture are：First by first
Silane coupler is added dropwise in alcohol after being mixed with water, stirring makes it well mixed after 1~3 hour, in the nanoscale two that addition prepares
Titanium oxide and aluminum oxide mixed powder, are put into 100~150 DEG C of baking oven after stirring and dry, ground after taking-up in mortar
Wear into little particle, you can obtain the Nano titanium dioxide and aluminum oxide mixture being modified through silane coupler surface；The warp
The percentage by weight of each raw material is in Nano titanium dioxide and aluminum oxide mixture that silane coupler surface is modified：Silane is even
Join agent 1%, Nano titanium dioxide and aluminum oxide mixed powder 90%, methanol 8%, water 1%；
10. second solidifies：The aluminium alloy extrusions of fluorine carbon finishing paint layer levelling 10min at room temperature will be first coated with, places into 60 DEG C
Baking vessel in preheat 10min after, taking-up is transferred in curing room and solidified, and the temperature of solidification is 250 DEG C, and hardening time is
30min, you can obtain finished product aluminium alloy extrusions.
After the present invention is by degreasing, acid-wash activation, galvanizing, Trend of Chrome-free processing processing, solid to aluminium alloy layering spray painting
Change so that the binding ability between each coating is very strong, and especially the adhesion between priming paint and aluminium alloy is even more and increased
By force, it is more easy to ensure aluminium alloy quality, the surface by aluminium alloy extrusions produced by the present invention is highly polished, overall
Presentation quality is attractive in appearance, meanwhile, the oxidation resistance and anti-uv-ray on aluminium alloy top layer are greatly improved, and make for a long time
With rear, what its coating will not also be fallen off shows, and has preferable antiseptic effect, adhesive ability is strong, will not produce Toxic
Matter, it is free from environmental pollution, completely can be with safe to use.
In order to further verify the performance of aluminium alloy extrusions made from above-described embodiment 1~3, respectively to the water-fast of product
The index such as property, resistance to ag(e)ing, acid resistance, alkali resistance is detected, and the result of detection is：
Finished product made from embodiment 1~3 is put into soak at room temperature 6 months in clear water, detects and finds after 6 months, in 3 embodiments
The paint film of product surface any change does not occur；
Finished product made from embodiment 1~3 is small with wavelength 100nm, 200nm, 300nm and 400nm ultraviolet irradiation 500 respectively
When, detect and find after the completion of irradiation, any change does not occur for the paint film of the product surface in 3 embodiments；
Finished product made from embodiment 1~3 is detected to the lacquer painting attachment of its adhesive force, the wherein product in embodiment 1 with cross-hatching
Power is 7.2, and the lacquer painting adhesive force of the product in embodiment 2 is 7.5, and the lacquer painting adhesive force of the product in embodiment 3 is 7；
Dripping 10% hydrochloric acid made from embodiment 1~3 on finished product respectively, placing 30 hours and detect, the product in 3 embodiments
Any change does not occur for the paint film on surface；
Dripping 10% sodium hydroxide made from embodiment 1~3 on finished product respectively, placing 30 hours and detect, in 3 embodiments
Any change does not occur for the paint film of product surface.
Detected and found by above-mentioned experiment, the obtained aluminium alloy extrusions of the present invention has preferable adhesive force, acid resistance, alkaline-resisting
Property and oxidative resistance, and there is stronger anti-ultraviolet property.
Claims (6)
1. a kind of fluorocarbon-sprayed method of aluminium alloy extrusions, it is characterised in that comprise the following steps that：
1. dedusting：Dust removal process is carried out to the dust of aluminium alloy section surface with 0.2~1MPa compressed air；
2. ungrease treatment：Aluminium alloy extrusions after step 1. dedusting is put into degreaser, at room temperature degreasing immersion 2~
5min, the degreaser include the raw material of following parts by weight：30~50 parts of sodium hydroxide, 15~30 parts of sodium metasilicate, diethanol amine 5
~20 parts, 800~1000 parts of water, again rinse aluminium alloy type timber-used clear water well after immersion, and the time of cleaning is 3~5min,
Moisture is dried after cleaning up；
3. acid-wash activation is handled：Aluminium alloy extrusions 2. step is handled after is put into pickle, 1~2min of soaking at room temperature, institute
Stating pickle includes the raw material of following parts by weight：50~80 parts of the concentrated nitric acid that mass fraction is 65%, mass fraction be 98% it is dense
20~30 parts of hydrofluoric acid that 20~30 parts of glacial acetic acid that 10~20 parts of sulfuric acid, mass fraction are 99%, mass fraction are 40%, water
1000~2000 parts, aluminium alloy type timber-used clear water is rinsed well again after the completion of immersion, the time of cleaning is 3~5min, cleaning
Moisture is dried after clean；
4. galvanizing：Aluminium alloy extrusions 3. step is handled after is put into hot dip zinc solution, is soaked under conditions of 50~60 DEG C
After steeping 5~6min, the stone acid sodium potassium of galvanizing solution weight 0.1~0.5% is added, is heated to 80 DEG C, is kept after 3~4min again
The % of galvanizing solution weight 0.5~1 oxidant is added, soaks 5~10min, it is again that aluminium alloy type timber-used is clear after the completion of immersion
Water is rinsed well, and the time of cleaning is 3~5min, dries moisture after cleaning up；
5. chromium-free deactivation is handled：Aluminium alloy extrusions 4. step is handled after is put into chromium-free passivation liquid, 3~5min of soak at room temperature
After take out aluminium alloy extrusions, can obtain after washing, drying thickness be 20~30um passivating film；The chromium-free passivation liquid bag
Include the raw material of following parts by weight：30~50 parts of nano titanium oxide, 10~20 parts of ammonium acid fluoride, 10~20 parts of ammonium fluoride, fluorine silicon
Sour 10~20 parts of sodium, 20~30 parts of polyurethane elastomer resin, 20~30 parts of acrylic resin, 10~20 parts of fluosilicic acid, three ethanol
1000~2000 parts of 3~5 parts of amine, 1~3 part of oxidant, 1~2 part of surfactant, 0.5~1 part of corrosion inhibiter and deionized water；
6. suspension polishing：Aluminium alloy extrusions 5. step is handled after is hung up, and its surface is polished to stingless sense；
7. spray-applied primer layer：Aluminium alloy extrusions 5. step is polished after is sent into spray booth, to its surface spraying fluorine carbon priming paint
Fluorine carbon prime coat is formed, the coating thickness for controlling fluorine carbon prime coat is 7~10 microns, and the fluorine carbon priming paint includes following weight
Raw material：10~20 parts of ethyl acetate, 30~60 parts of thermoplastic acrylic resin, 3~5 parts of diethylene glycol ether, magnesium powder 10~20
Part, 0.5~3 part of propane diols first propyl ether, 0.5~2 part of diethylene glycol ether, 0.05~0.5 part of dimethyl silicone polymer；
8. solidify for the first time：The aluminium alloy extrusions of fluorine carbon prime coat 5~10min of levelling, Ran Houfang at room temperature will be first coated with
Enter 5~10min of preheating in 40~60 DEG C of baking vessel, then be transferred in curing room and solidified, the temperature of solidification is 150~200
DEG C, hardening time is 20~30min；
9. spray-coating surface enamelled coating：Aluminium alloy extrusions 8. step is solidified after is fed again into paint spray booth, to its surface spraying fluorine carbon
Finish paint forms fluorine carbon finishing paint layer, and the coating thickness for controlling fluorine carbon finishing paint layer is 25~30 microns, and the preparation method of the finish paint is：
The Nano titanium dioxide being modified through silane coupler surface and aluminum oxide mixture are added in paint thinner, ultrasonic disperse
After well mixed, fluorocarbon radical material is added, can be prepared by after stirring, the percentage by weight bag of each raw material in the fluorine carbon finishing paint
Include：Nano titanium dioxide and aluminum oxide mixture 1~5%, fluorocarbon radical material 50~60% through the modification of silane coupler surface, apply
Expect diluent 35~45%；
10. second solidifies：The aluminium alloy extrusions of fluorine carbon finishing paint layer 5~10min of levelling at room temperature will be first coated with, is placed into
After preheating 5~10min in 40~60 DEG C of baking vessel, taking-up is transferred in curing room and solidified, the temperature of solidification for 200~
250 DEG C, hardening time is 20~30min, you can obtains finished product aluminium alloy extrusions.
A kind of 2. fluorocarbon-sprayed method of aluminium alloy extrusions according to claim 1, it is characterised in that：Step 5. in,
The oxidant is one or more combinations in hydrogen peroxide, sodium peroxydisulfate, sodium hypochlorite；The surfactant is alkyl sugar
One or more combinations of glycosides, Cocoamidopropyl betaine, fatty acid methyl ester ethoxylate；The corrosion inhibiter is phosphine carboxylic
Acid.
A kind of 3. fluorocarbon-sprayed method of aluminium alloy extrusions according to claim 1, it is characterised in that：Step 4. in,
The molten raw material for including following parts by weight of the galvanizing：5~10 parts of zinc oxide, 10~20 parts of alkali, 500~800 parts of water.
A kind of 4. fluorocarbon-sprayed method of aluminium alloy extrusions according to claim 1, it is characterised in that：Step 9. in,
The coating sustained release agent is made up of toluene, acetone and butanone, and the toluene, acetone and butanone are with any than mixing.
A kind of 5. fluorocarbon-sprayed method of aluminium alloy extrusions according to claim 1, it is characterised in that：Step 9. in,
The Nano titanium dioxide being modified through silane coupler surface and the preparation method of aluminum oxide mixture are：First by methanol with
Silane coupler is added dropwise after water mixing, stirring makes it well mixed after 1~3 hour, in the nanoscale titanium dioxide that addition prepares
Titanium and aluminum oxide mixed powder, are put into 100~150 DEG C of baking oven after stirring and dry, be ground into after taking-up in mortar
Little particle, you can obtain the Nano titanium dioxide and aluminum oxide mixture being modified through silane coupler surface；It is described through silane
The percentage by weight of each raw material is in Nano titanium dioxide and aluminum oxide mixture that coupling agent surface is modified：Silane coupler
1~5%, Nano titanium dioxide and aluminum oxide mixed powder 75~90%, methanol 5~10%, water 1~2%.
A kind of 6. fluorocarbon-sprayed method of aluminium alloy extrusions according to claim 1, it is characterised in that：Step 9. in,
The coating sustained release agent is made up of toluene, acetone and butanone, and the toluene, acetone and butanone are with any than mixing.
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| CN108940793A (en) * | 2018-04-16 | 2018-12-07 | 惠州市长冠涂料有限公司 | A kind of extra-weather-proof water-based fluorocarbon baking varnish method |
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| CN113877790A (en) * | 2021-10-26 | 2022-01-04 | 邹勇 | Novel advertisement profile surface treatment method |
| CN114293193A (en) * | 2021-11-30 | 2022-04-08 | 四川阳光坚端铝业有限公司 | Aluminum profile surface treatment process |
| CN114806248A (en) * | 2022-04-15 | 2022-07-29 | 福建省闽发铝业股份有限公司 | Application method of fluorocarbon spraying coating additive |
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Application publication date: 20171226 |