CN108913009A - A kind of overlay film aluminum alloy mould plate and preparation method thereof - Google Patents
A kind of overlay film aluminum alloy mould plate and preparation method thereof Download PDFInfo
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- CN108913009A CN108913009A CN201810685449.4A CN201810685449A CN108913009A CN 108913009 A CN108913009 A CN 108913009A CN 201810685449 A CN201810685449 A CN 201810685449A CN 108913009 A CN108913009 A CN 108913009A
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0812—Aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention discloses a kind of overlay film aluminum alloy mould plates and preparation method thereof, and including aluminum alloy mould plate substrate and the film layer for being formed in aluminum alloy mould plate substrate surface, the film layer is formed by paint solidification film forming layer, and the coating includes the raw material of following parts by weight：50-80 parts of titanium-baseds/Al contained Ni end, 20-30 parts of silicon powders, 50-80 parts of glycerol, 100-150 parts of urethane acrylates, 50-100 parts of fluoroplasts, 5-10 parts of fluorosurfactants, 10-15 parts of hydrophobic powder, 5-7 parts of dispersing agents, 2-5 parts of defoaming agents, 7-15 parts of curing agent, the film layer with a thickness of 20-30 μm, overlay film aluminum alloy mould plate prepared by the present invention can release agent-free use, it is smooth to demould rear surface, not viscous concrete is less reacted with concrete, its overlay film film layer adheres to more firm with aluminum alloy mould plate, it is not easily to fall off, it flakes, and the aluminum alloy mould plate number of turnover is more, wearability is high.
Description
Technical field
The present invention relates to building aluminum alloy mould plate technical field more particularly to a kind of overlay film aluminum alloy mould plate and its preparation sides
Method.
Background technique
Aluminum alloy pattern plate is the building template also known as aluminum alloy mould plate of aluminium alloy production, refers to make by modulus and design, aluminum alloy pattern plate
It is made after special equipment squeezes, as composed by aluminum deck, bracket and connector tripartite system, has and completely match
Cover the universal accessories that use, can composite assembly at the whole mould bases of various sizes of overall dimensions complexity, be a kind of assembling, work
The system template of industryization construction.Aluminum alloy mould plate solves defect existing for previous conventional template, substantially increases construction efficiency.
Aluminum alloy building template is suitble to the use of the templates such as wall form, horizontal floor, pillar, beam, creeping formwork, bridge, can be combined into small
Type, medium-sized or large-scale template, product weight is light, can be entirely artificial assembled, can also in flakes after mechanical hoisting, mainly use pin joint side
Formula connection.When as construction, usually only need one spanner or an adz-eye hammer can be operated, it is convenient and efficient, before installation, only need
Construction personnel is simply trained；Furthermore aluminum alloy mould plate precision is high, can save wall surfacing material with manually, make to build
Quality is built to be guaranteed and improve.
With the large-scale infrastructure in China, such as highway, railway, urban track traffic and skyscraper surpass
The Fast Construction of skyscraper and large public building, aluminum alloy building template use increasingly widespreadization.However actually make
With in the process, aluminum alloy mould plate and concrete direct long term contact or aluminum alloy mould plate are recycled for multiple times and all aluminium are be easy to cause to close
Golden template surface corrodes, and the surface quality and template strength of aluminum alloy mould plate will appear decline, simultaneously because aluminium alloy
Template and the concrete bonding of solidification are secured, and aluminum alloy mould plate is easy to deform because of stress during demoulding, this can shadow
The recycling of aluminum alloy pattern plate is rung, therefore aluminum alloy pattern plate often brushes release agent, but aluminum dipping form plate surface in actual use in recent years
Remaining concrete mud does not clear up i.e. brush release agent, and concrete surface when construction can be caused the defects of pitted skin occur, if demoulding
Agent is brushed unevenly or brushing thickness is improper, will cause Concrete contamination, and anti-separation layer wrecks, repaired,
It will cause extra workload, can still have film layer according to the method for overlay film aluminum alloy mould plate to avoid brushing release agent
Loosely with aluminum alloy mould plate bonding, the phenomenon that being fallen off using rear film layer appearance.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of overlay film aluminum alloy mould plate and preparation method thereof, without artificial brush
Coating release agent is easy for the overlay film aluminum alloy mould plate of demoulding, mitigates cost of labor, concrete surface is smooth after demoulding, will not damage
Mixed mud surface, and overlay film aluminum alloy mould plate does not glue concrete, and aluminum alloy mould plate surface is clean, and film layer and aluminum alloy mould plate are viscous
Knot is secured, it is not easy to fall off, the aluminum alloy mould plate number of turnover is more after overlay film, surface abrasion resistance.
The present invention solves above-mentioned technical problem by following technological means：
A kind of overlay film aluminum alloy mould plate, including aluminum alloy mould plate substrate and the film for being covered in aluminum alloy mould plate substrate surface
Layer, the film layer are formed by curing by coating spraying, and the coating includes the raw material of following parts by weight：50-80 parts of titanium-based/nickel
Alclad powder, 20-30 part silicon powder, 50-80 parts of glycerol, 100-150 parts of urethane acrylates, 50-100 parts of fluoroplasts,
5-10 parts of fluorosurfactants, 10-15 parts of hydrophobic powder, 5-7 parts of dispersing agents, 2-5 parts of defoaming agents, 7-15 parts of curing agent, it is described
Film layer with a thickness of 20-30 μm.Reach easy mold release to enable aluminum alloy to template, the purpose more than not viscous concrete and the number of turnover,
Overlay film need to be carried out on aluminum alloy mould plate, needed to be added acid and alkali-resistance in the coating preparation of overlay film, fluoroplast with high hardness, gathered
The raw materials such as urethane acrylate and titanium-based/nickel alclad, it is also necessary to which addition is strong to aluminum alloy mould plate adhesion strength, high temperature resistant, is not easy to take off
The raw materials such as the glycerol, the fluorosurfactant that fall.
Further, the titanium-based/Al contained Ni end includes following raw material：Titania powder, Al contained Ni end, three oxidations
Two iron powders, silane coupling agent, wherein titania powder, Al contained Ni end and the mass ratio of ferric oxide powder are
(1.5-3):(1-1.5):(0.1-0.5), the partial size of the titania powder are 15-25 μm, and Al contained Ni end partial size is 25-
It is aluminium that 40 μm, which are internal layers, and shell is the spherical structure of nickel.With good adhesiveness between nickel alclad and aluminium alloy, but with
Thicknesses of layers increase, adhesion property decline, and with infusibility and the biggish titanium dioxide of hardness is combined with each other can be strengthened
The titanium-based of preparation/nickel alclad compound structure, improves the machining property of film layer, and it is good to reach wear-resisting, adhesion strength, is not easy to take off
The characteristics of falling.
Further, the mass ratio of the titania powder, Al contained Ni end and ferric oxide powder is (1.5-
1.8):(1-1.2):(0.1-0.3)。
Further, the preparation method of overlay film aluminum alloy mould plate includes the following steps：
The pretreatment of aluminum alloy mould plate substrate：Aluminum alloy mould plate substrate is heated to 250-350 DEG C, keeps the temperature 10-15min, it is cold
But 20-30min is impregnated in 60-75wt% ethanol solution after, is then taken out, again in the sodium hydroxide solution of pH=9-10
5-15min is impregnated, after immersion, is cleaned up, is dried with deionized water；Due to the linear expansion coefficient of aluminium alloy and aluminium oxide
Difference is larger, and respectively 25.3 × 10-6With 8.0 × 10-6, biggish thermal stress can be generated when heated, make oxide film breakdown,
The organic solvent and oxidation film on aluminum alloy mould plate surface can be removed using ethyl alcohol, sodium hydroxide；
The polishing of aluminum alloy mould plate substrate：Pretreated aluminum alloy base material template is polished with felt polishing wheel, circle
Circular velocity is 20-30m/s, surface roughness Ra=0.1-0.4, and ethanol solution clean the surface, drying for standby are used after the completion of polishing；
The adhesion strength between coating and aluminum alloy mould plate can be increased after polishing.
Overlay film：Aluminum alloy mould plate substrate after polishing is impregnated into 1-2min in acidic mixed solution, on surface after taking-up
Uniformly one coating of coating, coating thickness is less than 5 μm, and after 10-15min, it is molten to spray one layer of acidic mixed in coating layer surface
Liquid coats a coating again after 1-3min, and coating thickness is not less than 5 μm, after 10-15min, operates with method, successively constructs
Finally dry at a temperature of 70-80 DEG C to the thickness of needs, paint solidification film forming layer is to get arriving overlay film aluminum alloy mould plate.
In such a way that gradation coats coating, the film layer after can preventing drying is flaked on aluminum alloy mould plate；For the first time
Acid solution processing is because aluminum alloy mould plate is to be prepared by mixed metal, and acidic mixed solution handles aluminum alloy mould plate
Aluminum alloy mould plate surface can be subjected to microetch, conducive to the adherency of coating, second and later acidic mixed solution processing, be because
The coating not being completely dried can be activated for acidic mixed solution, will not be layered, keep away between two coatings when being coated next time
Film layer falls off when exempting to use after drying completely.
Further, in the overlay film step, acidic mixed solution is molten for the mixing of hydrochloric acid containing 30wt% and 35wt% nitric acid
Liquid, the mixed solution of hydrochloric acid containing 45wt% and 30wt% sulfuric acid, nitric acid containing 45wt% and 40wt% sulfuric acid mixed solution in
It is a kind of.It is different using activation of different types of acidic mixed solution to different-thickness film layer.30wt% hydrochloric acid and
The mixed solution of 35wt% nitric acid is suitable for the mixed solution of the film layer of 20-24 μ m thick, 45wt% hydrochloric acid and 30wt% sulfuric acid
It is suitable for 30-35 μm of film layer suitable for the mixed solution of the film layer of 25-29 μ m thick, 45wt% nitric acid and 40wt% sulfuric acid.
Further, the preparation method of the coating includes as follows：
Silicon powder and titanium-based/Al contained Ni end are mixed, glycerol is added, stirring adds deionized water, dispersing agent, with
After the rate mechanical stirring 10-15min of 2000-3000r/min, urethane acrylate is added, then with the frequency of 15-20kHz
Ultrasonic wave dispersion is carried out, fluoroplast and fluorosurfactant is added after 5-10min, to 35-50 DEG C, addition disappears heating water bath
After infusion, curing agent, hydrophobic powder, stops heating, with the rate mechanical stirring 20-30min of 3000-4500r/min, applied
Material.
Silicon powder is added in the preparation process of coating, can be reduced the generation precipitated in coating and weakens the layering of coating
Phenomenon；The fluoroplast of addition has the function of abrasion resistance, waterproof, anti-soda acid, is prepared into together with urethane acrylate
Coating, the film layer after paint solidification have the characteristics that high-wearing feature, strong adhesion strength, anti-acid-base property, waterproofness；And glycerol is added can
It acts synergistically as cosurfactant and suspending agent and fluorosurfactant, coating is made to be uniformly dispersed, emulsification is more thoroughly simultaneously
And the surface tension of coating is reduced, it cannot not achieve the purpose that viscously concrete；The titanium-based of addition/Al contained Ni end intensity is high, acid and alkali-resistance,
Further film layer can be prevented to react with concrete, and the tension of film layer, compression strength enhancing can be made, wear-resisting property improves, aluminium
Alloy templates are increased using the number of turnover.
Further, the titanium-based/Al contained Ni end preparation method is as follows:By titania powder and silane coupling agent,
After ferric oxide powder mixing, vibro-grinding 1-2h is carried out in frequency 1500-2000r/min, Al contained Ni end is then added,
After mixing evenly after 800-1000 DEG C of high-temperature calcination 10-20min, takes out, be cooled to 200-300 DEG C, subsequent supersonic oscillations
20-30min, frequency 20-25kHz obtain titanium-based/Al contained Ni end.
Vibro-grinding is carried out by titanium dioxide and on a small quantity with magnetic di-iron trioxide, silane coupling agent, leads to dioxy
Change and mutually carry out electronic interferences between titanium surface and di-iron trioxide, so that titania powder is uniformly dispersed, do not reunite, nickel is added
Alclad powder carries out high-temperature calcination after mixing evenly, and metal surface starts to melt, and titanium dioxide and nickel alclad are compound mutually
Together, form titanium-based/Al contained Ni end, carry out supersonic oscillations be by not compound secured titanium-based/Al contained Ni end dispersion or
Person is to disperse not compound titania powder, Al contained Ni end, and after filtering out, titanium-based/Al contained Ni end is stand-by.
Further, it is 45-60 μm of titanium-based/nickel that particle size range is filtered out in the preparation step of the titanium-based/Al contained Ni end
Alclad powder is used for the preparation of coating.After titania powder and Al contained Ni end are combined with each other, partial size becomes larger, and filters out
It is not combined with each other or composite-grain diameter is excessive and titanium-based/Al contained Ni end for impacting to paint adhesion, leave partial size and exist
45-60 μm of titanium-based/Al contained Ni end carry out using.
Further, it is that 4-5L/min is passed through inert gas with flow velocity in the high-temperature burning process.It is passed through inert gas, is prevented
Oxidation reaction only occurs in high-temperature burning process, causes to reduce yield.
A kind of overlay film aluminum alloy mould plate provided by the invention and preparation method thereof, coating are coated in aluminum alloy mould plate surface shape
At a tunic, film layer and aluminum alloy mould plate adherency are more firm, not easily to fall off, flake, when use can release agent-free use, without artificial
It brushes release agent to be easy for demoulding, concrete surface is smooth after demoulding, will not damage mixed mud surface, while concrete will not
It is adhered to aluminum alloy mould plate surface, alleviates the cost of manual cleaning, the film layer of formation is firm to endure hardships, and enables aluminum alloy to template surface
It is wear-resisting, increase the number of turnover.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in detail：
Embodiment 1：Titanium-based/Al contained Ni end preparation one
Last 15 parts by weight of 30 parts by weight of titania powder, Al contained Ni, 5 parts by weight of ferric oxide powder, silane are even
Join 10 parts by weight of agent, titania powder：Al contained Ni end：Ferric oxide powder mass ratio=3:1.5:0.5；
After titania powder is mixed with silane coupling agent, ferric oxide powder, vibro-grinding 2h is carried out, frequency is
Al contained Ni end is added in 2000r/min, after mixing evenly, carries out 800 DEG C of high temperature of high-temperature calcination, and be passed through inert gas, flows
Speed is 4L/min, is taken out after 20min, is cooled to 300 DEG C, carries out supersonic oscillations 25min, frequency 20kHz, obtain titanium-based/
Al contained Ni end.
Embodiment 2：Titanium-based/Al contained Ni end preparation two
Last 12 parts by weight of 18 parts by weight of titania powder, Al contained Ni, 3 parts by weight of ferric oxide powder, silane are even
Join 10 parts by weight of agent, titania powder：Al contained Ni end：Ferric oxide powder mass ratio=1.8：1.2:0.3；
After titania powder is mixed with silane coupling agent, ferric oxide powder, vibro-grinding 1.5h, frequency are carried out
For 2000r/min, Al contained Ni end is added, after mixing evenly, carries out 900 DEG C of high temperature of high-temperature calcination, and be passed through inert gas,
Flow velocity is 5L/min, is taken out after 15min, is cooled to 250 DEG C, carries out supersonic oscillations 30min, and frequency 25kHz obtains titanium
Base/Al contained Ni end.
Embodiment 3：Titanium-based/Al contained Ni end preparation three
Last 10 parts by weight of 15 parts by weight of titania powder, Al contained Ni, 1 parts by weight of ferric oxide powder, silane are even
Join 8 parts by weight of agent, titania powder：Al contained Ni end：Ferric oxide powder mass ratio=1.5：1:0.1；
After titania powder is mixed with silane coupling agent, ferric oxide powder, vibro-grinding 1h is carried out, frequency is
Al contained Ni end is added in 1500r/min, after mixing evenly, carries out 1000 DEG C of high temperature of high-temperature calcination, and be passed through inert gas,
Flow velocity is 4L/min, is taken out after 10min, is cooled to 200 DEG C, carries out supersonic oscillations 20min, and frequency 20kHz obtains titanium
Base/Al contained Ni end.
Embodiment 4：Overlay film aluminum alloy mould plate preparation one
50 parts of titanium-baseds/Al contained Ni end, 30 parts of silicon powders, 50 parts of glycerol, 150 parts of urethane acrylates, 50 parts of fluorine elements
Resin, 5 parts of fluorosurfactants, 10 parts of hydrophobic powder, 5 parts of dispersing agents, 2 parts of defoaming agents, 7 parts of curing agent, the thickness of the film layer
Degree is 24 μm or so, and the titanium-based for selecting embodiment 1 to prepare/Al contained Ni end, screening partial size is 45-60 μm of titanium-based/Al contained Ni
End carry out using；
The preparation of coating：
Glycerol is added after silicon powder and titanium-based/Al contained Ni end are mixed, stirs evenly, adds deionized water and dispersion
After carrying out mechanical stirring 15min with the rate of 2000r/min, urethane acrylate is added in agent, and with the frequency of 15kHz into
After row ultrasonic wave disperses 10min, fluoroplast and fluorosurfactant is added, heating water bath is added defoaming agent, consolidates to 50 DEG C
After agent, hydrophobic powder, stops heating, and mechanical stirring 30min is carried out with the rate of 3000r/min, obtain coating；
The preparation of overlay film aluminum alloy mould plate：
Aluminum alloy mould plate substrate is heated to 250 DEG C, 15min is kept the temperature, aluminum alloy mould plate is immersed in 60wt% after cooling
Ethanol solution 30min, after take out, be immersed in the sodium hydroxide solution 15min of pH=9 again, after immersion, spend from
Sub- water cleans up, and dries；
Pretreated aluminum alloy mould plate is polished with felt polishing wheel, peripheral speed 20m/s, surface roughness
Ra=0.4 uses ethanol solution clean the surface, drying for standby after the completion of polishing；
Aluminum alloy mould plate after polishing is immersed in 2min in the acidic mixed solution of 30wt% hydrochloric acid and 35wt% nitric acid,
It takes out rear surface and coats about 4 μm of a coating thickness, after 15min, one layer of 30wt% hydrochloric acid and 35wt% nitric acid are sprayed in surface
Acidic mixed solution coats a coating after 3min again, and thickness is about 5 μm, after 15min, constructs with method, successively construction to film
The thickness of about 24 μm of layer, after being completely dried at a temperature of 70 DEG C, obtains overlay film aluminum alloy mould plate.
Embodiment 5：Overlay film aluminum alloy mould plate preparation two
60 parts of titanium-baseds/Al contained Ni end, 20 parts of silicon powders, 60 parts of glycerol, 130 parts of urethane acrylates, 80 parts of fluorine elements
Resin, 8 parts of fluorosurfactants, 12 parts of hydrophobic powder, 6 parts of dispersing agents, 4 parts of defoaming agents, 12 parts of curing agent, the thickness of the film layer
Degree is 30 μm or so, and the titanium-based for selecting embodiment 2 to prepare/Al contained Ni end, screening partial size is 45-60 μm of titanium-based/Al contained Ni
End carry out using；
The preparation of coating：
Glycerol is added after silicon powder and titanium-based/Al contained Ni end are mixed, stirs evenly, adds deionized water and dispersion
After carrying out mechanical stirring 12min with the rate of 2500r/min, urethane acrylate is added in agent, and with the frequency of 18kHz into
After row ultrasonic wave disperses 6min, fluoroplast and fluorosurfactant is added, heating water bath is added defoaming agent, consolidates to 40 DEG C
After agent, hydrophobic powder, stops heating, and mechanical stirring 25min is carried out with the rate of 3500r/min, obtain coating；
The preparation of overlay film aluminum alloy mould plate：
Aluminum alloy mould plate substrate is heated to 300 DEG C, 13min is kept the temperature, aluminum alloy mould plate is immersed in 70wt% after cooling
Ethanol solution 30min, after take out, be immersed in the sodium hydroxide solution 10min of pH=9 again, after immersion, spend from
Sub- water cleans up, and dries；
Pretreated aluminum alloy mould plate is polished with felt polishing wheel, peripheral speed 25m/s, surface roughness
Ra=0.2 uses ethanol solution clean the surface, drying for standby after the completion of polishing；
Aluminum alloy mould plate after polishing is immersed in 1min in the acidic mixed solution of 45wt% nitric acid and 45wt% sulfuric acid,
It takes out rear surface and coats about 2 μm of a coating thickness, after 12min, one layer of 45wt% nitric acid and 45wt% sulfuric acid are sprayed in surface
Acidic mixed solution coats a coating after 2min again, and thickness is about 7 μm, after 12min, constructs with method, successively construction to film
The thickness of about 30 μm of layer, after being completely dried at a temperature of 70 DEG C, obtains overlay film aluminum alloy mould plate.
Embodiment 6：Overlay film aluminum alloy mould plate preparation three
80 parts of titanium-baseds/Al contained Ni end, 25 parts of silicon powders, 80 parts of glycerol, 100 parts of urethane acrylates, 100 parts of fluorine elements
Resin, 10 parts of fluorosurfactants, 15 parts of hydrophobic powder, 7 parts of dispersing agents, 5 parts of defoaming agents, 15 parts of curing agent, the film layer
With a thickness of 28 μm or so, titanium-based prepared with embodiment 3/Al contained Ni end is selected, screening partial size is 45-60 μm of titanium-based/nickel alclad
Powder carry out using；
The preparation of coating：
Glycerol is added after silicon powder and titanium-based/Al contained Ni end are mixed, stirs evenly, adds deionized water and dispersion
After carrying out mechanical stirring 10min with the rate of 3000r/min, urethane acrylate is added in agent, and with the frequency of 20kHz into
After row ultrasonic wave disperses 5min, fluoroplast and fluorosurfactant is added, heating water bath is added defoaming agent, consolidates to 35 DEG C
After agent, hydrophobic powder, stops heating, and mechanical stirring 20min is carried out with the rate of 4500r/min, obtain coating；
The preparation of overlay film aluminum alloy mould plate：
Aluminum alloy mould plate substrate is heated to 350 DEG C, 10min is kept the temperature, aluminum alloy mould plate is immersed in 75wt% after cooling
Ethanol solution 20min, after take out, be immersed in the sodium hydroxide solution 5min of pH=10 again, after immersion, spend from
Sub- water cleans up, and dries；
Pretreated aluminum alloy mould plate is polished with felt polishing wheel, peripheral speed 30m/s, surface roughness
Ra=0.1 uses ethanol solution clean the surface, drying for standby after the completion of polishing；
Aluminum alloy mould plate after polishing is immersed in 1min in the acidic mixed solution of 45wt% hydrochloric acid and 30wt% sulfuric acid,
It takes out rear surface and coats about 4 μm of a coating thickness, after 10min, one layer of 45wt% hydrochloric acid and 30wt% sulfuric acid are sprayed in surface
Acidic mixed solution coats a coating after 1min again, and thickness is about 6 μm, after 10min, constructs with method, successively construction to film
The thickness of about 28 μm of layer, after being completely dried at a temperature of 80 DEG C, obtains overlay film aluminum alloy mould plate.
The overlay film aluminum alloy mould plate for preparing embodiment 4, embodiment 5, embodiment 6 when being poured concrete is as building template
It is tested, obtained data result is as follows：
Film layer falls off, and superficial film falls off area/overlay film aluminium alloy mould area=overlay film aluminum alloy mould plate in use
Plate suqare, is calculation basis with embodiment 4, embodiment 5, embodiment 6, and overlay film aluminum alloy mould plate area is 3m3, when film layer falls off
Area reaches 0.15m3(5%) access times are recorded when, and calculating reaches film layer and falls off area for 0.15m3Shi Suoyou access times
Overlay film aluminum alloy mould plate surface contamination concrete mean value.
From data as can be seen that the aluminum alloy mould plate prepared by embodiment 4, embodiment 5, embodiment 6, film layer falls off area
When >=5%, the number of turnover is all larger than 270 times or more, and the concrete mean value of surface contamination is less than 0.2m3, and estimate concrete
Surface is substantially not damaged, illustrates that the overlay film aluminum alloy mould plate number of turnover prepared by the present invention is more, and does not glue concrete, to concrete
Surface fanout free region.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement should all cover without departing from the objective and range of technical solution of the present invention in claim of the invention
In range.Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (9)
1. a kind of overlay film aluminum alloy mould plate, which is characterized in that including aluminum alloy mould plate substrate and be covered in aluminum alloy mould plate substrate
The film layer on surface, the film layer are formed by curing by coating spraying, and the coating includes the raw material of following parts by weight：50-80
Part titanium-based/Al contained Ni end, 20-30 parts of silicon powders, 50-80 parts of glycerol, 100-150 parts of urethane acrylates, 50-100 parts
Fluoroplast, 5-10 part fluorosurfactant, 10-15 parts of hydrophobic powder, 5-7 parts of dispersing agents, 2-5 parts of defoaming agents, 7-15 parts it is solid
Agent, the film layer with a thickness of 20-30 μm.
2. a kind of overlay film aluminum alloy mould plate according to claim 1, which is characterized in that the titanium-based/Al contained Ni end packet
Include following raw material：Titania powder, Al contained Ni end, ferric oxide powder, silane coupling agent, wherein titanium dioxide powder
The mass ratio at end, Al contained Ni end and ferric oxide powder is (1.5-3):(1-1.5):(0.1-0.5), the titanium dioxide
The partial size of powder is 15-25 μm, and the partial size at Al contained Ni end is 30-40 μm, is internal layer for aluminium, shell is the spherical structure of nickel.
3. a kind of overlay film aluminum alloy mould plate according to claim 2, which is characterized in that the titania powder, nickel packet
The mass ratio of aluminium powder and ferric oxide powder is (1.5-1.8):(1-1.2):(0.1-0.3).
4. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 1 to 3, which is characterized in that the system
Preparation Method includes the following steps：
The pretreatment of aluminum alloy mould plate substrate：Aluminum alloy mould plate substrate is heated to 250-350 DEG C, 10-15min is kept the temperature, after cooling
20-30min is impregnated in 60-75wt% ethanol solution, then takes out, is impregnated in the sodium hydroxide solution of pH=9-10 again
5-15min after immersion, is cleaned up with deionized water, is dried；
The polishing of aluminum alloy mould plate substrate：Pretreated aluminum alloy mould plate substrate is polished with felt polishing wheel, circumference speed
Degree is 20-30m/s, and surface roughness Ra=0.1-0.4 uses ethanol solution clean the surface, drying for standby after the completion of polishing；
Overlay film：Aluminum alloy mould plate substrate after polishing is impregnated into 1-2min in acidic mixed solution, it is uniform on surface after taking-up
A coating is coated, coating thickness is less than 5 μm, after 10-15min, one layer of acidic mixed solution is sprayed in coating layer surface, in
A coating is coated after 1-3min again, coating thickness is not less than 5 μm, after 10-15min, operates with method, and successively construction extremely needs
Thickness, finally dry at a temperature of 70-80 DEG C, paint solidification film forming layer is to get arriving overlay film aluminum alloy mould plate.
5. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 4, which is characterized in that the overlay film step
In, acidic mixed solution is mixed solution, hydrochloric acid containing 45wt% and the 30wt% sulfuric acid of hydrochloric acid containing 30wt% and 35wt% nitric acid
One of mixed solution, nitric acid containing 45wt% and the mixed solution of 40wt% sulfuric acid.
6. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 4, which is characterized in that the system of the coating
Preparation Method is as follows：
Silicon powder and titanium-based/Al contained Ni end are mixed, glycerol is added, stirring adds deionized water, dispersing agent, with 2000-
After the rate mechanical stirring 10-15min of 3000r/min, urethane acrylate is added, then surpassed with the frequency of 15-20kHz
After sound wave disperses 5-10min, fluoroplast and fluorosurfactant is added, heating water bath to 35-50 DEG C, be added defoaming agent,
After curing agent, hydrophobic powder, stops heating, with the rate mechanical stirring 20-30min of 3000-4500r/min, obtain coating.
7. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 6, which is characterized in that the titanium-based/nickel
The preparation method of alclad powder is as follows:After titania powder is mixed with silane coupling agent, ferric oxide powder, in frequency
1500-2000r/min carries out vibro-grinding 1-2h, Al contained Ni end is then added, after mixing evenly in 800-1000 DEG C of high temperature
After calcining 10-20min, takes out, be cooled to 200-300 DEG C, subsequent supersonic oscillations 20-30min, frequency 20-25kHz are obtained
To titanium-based/Al contained Ni end.
8. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 7, which is characterized in that the titanium-based/nickel
In the preparation step of alclad powder, filtering out particle size range is the preparation that 45-60 μm of titanium-based/Al contained Ni end is used for coating.
9. a kind of preparation method of overlay film aluminum alloy mould plate according to claim 7, which is characterized in that the high-temperature calcination
It is in the process that 4-5L/min is passed through inert gas with flow velocity.
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| CN114410206A (en) * | 2022-02-22 | 2022-04-29 | 深圳市加逸科技有限公司 | Hardness-enhanced coating and coating method and application thereof |
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