CN111347227A - Novel aluminum alloy window and production process thereof - Google Patents

Novel aluminum alloy window and production process thereof Download PDF

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Publication number
CN111347227A
CN111347227A CN202010349635.8A CN202010349635A CN111347227A CN 111347227 A CN111347227 A CN 111347227A CN 202010349635 A CN202010349635 A CN 202010349635A CN 111347227 A CN111347227 A CN 111347227A
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aluminum alloy
coating
heat
production process
parts
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CN111347227B (en
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夏建军
袁旭治
周仕贵
沈笑天
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Zhejiang Dajian Decoration Engineering Co ltd
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Zhejiang Dajian Decoration Engineering Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • 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
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • 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
    • 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
    • C09D5/08—Anti-corrosive paints
    • 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
    • C09D7/47—Levelling agents
    • 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
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30—Coverings, e.g. protecting against weather, for decorative purposes
    • 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
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

The invention discloses a production process of a novel aluminum alloy window, which relates to the technical field of aluminum alloy windows and comprises the following process steps: s1: cutting an aluminum alloy section; s2: drilling the cut aluminum alloy section; s3: assembling the drilled aluminum alloy section to obtain an aluminum alloy frame; s4: coating a bottom coating on the surface of the aluminum alloy frame, and spraying a heat-insulating coating after the bottom coating is dried to obtain a heat-insulating aluminum alloy frame; the heat insulation coating comprises the following components in parts by weight: 80-100 parts of a film forming agent; 4-9 parts of a curing agent; 0.6-1.5 parts of a leveling agent; 40-70 parts of a filler; s5: assembling and fixing the heat-insulating aluminum alloy frame and the glass; the novel aluminum alloy window can be obtained through the above 5 steps. The invention has the advantage of improving the durability of the heat-resistant coating of the aluminum alloy.

Description

Novel aluminum alloy window and production process thereof
Technical Field
The invention relates to the technical field of aluminum alloy windows, in particular to a novel aluminum alloy window and a production process thereof.
Background
The existing doors and windows made of aluminum alloy sections are favored by people due to the characteristics of good lighting, light weight, beautiful appearance, high section recycling rate and the like. The amount of aluminum alloy windows in the current market accounts for 55% of the total amount of the windows and doors, and the aluminum alloy window becomes a mainstream product in the window and door industry. However, the thermal conductivity of the aluminum alloy profile is as high as 203w/m · k, and the manufactured aluminum alloy window has poor heat insulation effect, which leads to high energy consumption of the indoor air conditioner, so how to improve the heat insulation performance of the aluminum alloy profile (window and door) becomes a hot spot of current research.
In order to improve the heat preservation and insulation capability of the existing aluminum alloy window, a heat insulation coating is usually coated on a frame of the aluminum alloy window so as to achieve the purpose of reducing the heat conductivity of the aluminum alloy, and further improve the heat insulation effect of the aluminum alloy window.
The Chinese patent with the publication number of CN109825116A discloses a heat-insulating protective coating for an aluminum alloy casement window, which comprises a heat-insulating bottom coating directly coated on the surface of a base material and a decorative surface coating coated on the heat-insulating bottom coating; the coating component of the heat-insulating bottom coating comprises the following raw materials: ceramic micro-beads, ATO powder, filler, surfactant, tackifier, corundum powder, curing agent, silicon oxide and cobalt oxide; the coating component of the decorative surface layer coating comprises the following raw materials: pigment, wetting agent, preservative, film forming additive, aluminum silicate powder, glycol, mica powder and stabilizer.
The above prior art solutions have the following drawbacks: the prior art thermal barrier coatings on aluminum alloy surfaces are susceptible to various components in the air, particularly moisture. The heat insulation coating is usually an organic coating, and under the condition of high moisture and humidity, the heat insulation coating easily seeps through the organic coating and enters the junction of the surface of the aluminum alloy and the coating, so that bubbles fall off from the coating, the aluminum alloy is corroded, and the like, and the heat insulation service life of the aluminum alloy window is shortened.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a production process of a novel aluminum alloy window, which improves the durability of a thermal insulation coating in humid air by improving the formula of the thermal insulation coating.
The above object of the present invention is achieved by the following technical solutions:
a production process of a novel aluminum alloy window comprises the following process steps:
s1: cutting an aluminum alloy section;
s2: drilling the cut aluminum alloy section;
s3: assembling the drilled aluminum alloy section to obtain an aluminum alloy frame;
s4: coating a bottom coating on the surface of the aluminum alloy frame, and spraying a heat-insulating coating after the bottom coating is dried to obtain a heat-insulating aluminum alloy frame; the heat insulation coating comprises the following components in parts by weight:
Figure BDA0002471484870000021
s5: assembling and fixing the heat-insulating aluminum alloy frame and the glass;
the novel aluminum alloy window can be obtained through the above 5 steps.
Through adopting above-mentioned technical scheme, the aluminum alloy ex-trusions is earlier through cutting out the aluminum alloy ex-trusions that becomes the suitable size that can be used to make the aluminum alloy window, then fixes a position through drilling for convenient workman fixes the aluminum alloy ex-trusions with the screw after the aluminum alloy frame assembly is accomplished. After the aluminum alloy frame is spliced and assembled, a layer of heat insulation coating is sprayed on the surface of the aluminum alloy frame to reduce the heat conductivity of the aluminum alloy frame, so that the temperature between the inside and the outside of the aluminum alloy frame is not easy to conduct convection quickly after the aluminum alloy frame is installed, and the heat insulation capability of an aluminum alloy window to a room is improved. And finally, assembling and fixing the aluminum alloy frame and the glass to complete the production and the manufacture of the aluminum alloy window.
When the heat-insulating coating is coated, firstly, a bottom coating is coated on the surface of the aluminum alloy frame, because the surface of the aluminum alloy is smooth and has insufficient roughness, after the heat-insulating coating is formed by spraying, the adhesion bonding force between the heat-insulating coating and the surface of the aluminum alloy is poor, the bottom coating can improve the smoothness of the surface of the aluminum alloy, so that the heat-insulating coating is indirectly connected with the aluminum alloy through the bottom coating, the adhesion force of the heat-insulating coating is improved, and the situations that the finished aluminum alloy window is exposed in the external environment for a long time and corroded and falls off and the like in the use process are avoided.
The invention is further configured to: the leveling agent comprises the following components in percentage by weight:
30-50% of sodium fatty alcohol polyoxyethylene carboxylate;
50-70% of alkyl polyoxyethylene sodium sulfate.
By adopting the technical scheme, the sodium fatty alcohol polyoxyethylene carboxylate and the sodium alkyl polyoxyethylene sulfate are both surfactants, and both can reduce the surface tension of the heat-insulating coating and promote the coating to form a flat, smooth and uniform coating film in the drying film-forming process.
The invention is further configured to: the filler comprises the following components in percentage by weight:
30-50% of calcium carbonate whiskers;
20-40% of hollow glass beads;
10-50% of fatty acid diethanolamine.
By adopting the technical scheme, the addition of the calcium carbonate whisker filler is beneficial to improving the washing resistance of the heat insulation coating, and the addition of the hollow glass beads can reduce the heat conductivity of the heat insulation coating, so that the heat insulation effect of the heat insulation coating is improved. The fatty acid diethanol amine is used as a surfactant, so that the dispersion uniformity of the hollow glass microspheres and the calcium carbonate whiskers in the thermal insulation coating can be improved. Meanwhile, the fatty acid diethanol amine and the alkyl polyoxyethylene sodium sulfate in the leveling agent can simultaneously act to retain micro bubbles generated in the stirring and batching process of the thermal insulation coating, so that a certain amount of micro bubbles are arranged inside the thermal insulation coating after the thermal insulation coating is dried and cured, the bubbles can reduce the thermal conductivity of the thermal insulation coating, and the thermal insulation capability of the thermal insulation coating is improved.
The invention is further configured to: the heat-insulating coating is also coated with a hydrophobic layer, and the hydrophobic layer is prepared from the following components in parts by weight:
Figure BDA0002471484870000031
the invention is further configured to: the coating process of the hydrophobic layer comprises the following steps:
step a: taking acetone according to a proportion, dropwise adding epoxy resin and polyamide resin into the acetone, uniformly stirring, and then dropwise adding an accelerant for later use to obtain a solution A;
step b: taking nano SiO in proportion2Dissolving in absolute ethyl alcohol, dripping a coupling agent, and then carrying out ultrasonic dispersion for 3 hours to obtain a solution B;
step c: taking absolute ethyl alcohol according to a proportion, dropwise adding 1H,1H,2H, 2H-perfluoro alkyl triethoxy silane, and uniformly stirring to obtain a solution C;
step d: and spin-coating the prepared solution A on the surface of the heat-insulating coating, and air-drying at room temperature for 20-30 min. Dip-coating the solution C on the surface of the air-dried sample, and placing the sample in a drying oven for 4-5 hours, wherein the temperature of the drying oven is set to be 100 ℃; taking out the sample, dip-coating the solution C, and placing the sample in a drying oven for 4-5h, wherein the temperature of the drying oven is set to be 100 ℃.
By adopting the technical scheme, when the aluminum alloy window is used for a long time, water molecules in the air can penetrate into the space between the heat-insulating coating and the bottom coating and the space between the bottom coating and the aluminum alloy surface through the organic heat-insulating coating, so that the phenomena of corrosion, bubbles and falling of the surface coating of the aluminum alloy window are easy to occur. The hydrophobic layer is coated on the heat-insulating coating, so that the surface of the aluminum alloy window has better hydrophobicity, and the accumulation of moisture in the air on the surface of the aluminum alloy window is reduced, thereby reducing the permeation of water to the organic heat-insulating coating and improving the durability of the heat-insulating coating.
The epoxy resin and the polyamide resin are main film forming agents of the hydrophobic layer, the coupling agent improves the dispersing capacity of the nano silicon dioxide in the film forming agents, the strength, the wear resistance and the aging resistance of the coating are improved after the nano silicon dioxide is added, and the hydrophobic capacity of the coating is improved after the perfluorocarbon triethoxysilane is added.
The invention is further configured to: the primer coating is pretreated by the following steps before coating, and the pretreatment liquid comprises the following components in parts by weight:
Figure BDA0002471484870000041
the invention is further configured to: the pretreatment comprises the following steps:
step a: mixing and dissolving deionized water, sodium carbonate, potassium carbonate and sodium chloride according to a proportion to obtain a pretreatment solution;
step b: and heating the pretreatment liquid to boiling, and then immersing the aluminum alloy frame into the pretreatment liquid for 5-10 minutes.
By adopting the technical scheme, after pretreatment, the aluminum alloy on the surface can be chemically oxidized on the surface of the aluminum alloy frame, so that a layer of porous oxide film is obtained, sodium carbonate and potassium carbonate are added into the pretreatment liquid, so that the aluminum alloy frame can also obtain a thicker oxide film in a lower-temperature aqueous solution, sodium chloride is added to improve the boiling point of the solution, the pretreatment liquid is heated to a boiling state, so that the thickness of the oxide film obtained by the aluminum alloy frame during pretreatment is further improved, and the oxide film has better corrosion resistance and adsorption capacity to the film layer through detection.
The invention is further configured to: the bottom coating comprises the following components in parts by weight:
Figure BDA0002471484870000042
Figure BDA0002471484870000051
by adopting the technical scheme, the pretreated aluminum alloy surface has some defects which are not completely covered by the oxidation layer, and the defects can also become starting points of the coating corrosion. Through the coating treatment of the bottom coating, the trivalent chromium salt in the coating can carry out certain oxidation repair on the defects in the coating process of the bottom coating. Meanwhile, the dried chromium salt is left in the bottom coating, when partial water permeates into the surface of the aluminum alloy in the long-term use process of the aluminum alloy window finished product, chromium salt ions can repair the defects of the aluminum alloy window finished product which are still not covered by the oxide film under the action of water, and the aluminum alloy is protected from being easily corroded and damaged.
Meanwhile, the concentration of the bottom coating is low, and pores on the oxide film are not easy to block, so that the pretreated aluminum alloy surface still has good adsorption capacity on the heat insulation coating.
Compared with the prior art, the invention has the beneficial effects that:
1. the aluminum alloy window is coated with the bottom coating in advance by coating, so that the bonding adhesive force and bonding tightness between the heat-insulating coating on the aluminum alloy window and the bottom coating are improved, the influence of water permeation into the coating is reduced, and the heat-insulating service life is prolonged;
2. by arranging the hydrophobic layer and carrying out pretreatment and other processes on the aluminum alloy, the infiltration of water in the coating is reduced, and the infiltrated water is utilized to carry out secondary oxidation on the aluminum alloy, so that the heat insulation life of the aluminum alloy window is further prolonged.
Detailed Description
The present invention will be described in detail with reference to examples.
The invention discloses a production process of a novel aluminum alloy window, which comprises the following process steps:
s1: cutting an aluminum alloy section;
s2: drilling the cut aluminum alloy section;
s3: assembling the drilled aluminum alloy section to obtain an aluminum alloy frame;
s4: the method comprises the following steps of firstly pretreating the surface of an aluminum alloy frame, wherein pretreatment liquid used for pretreatment comprises the following components in parts by weight: 1000 parts of deionized water, 15 parts of sodium carbonate, 10 parts of potassium carbonate and 30 parts of sodium chloride.
The pretreatment comprises the following steps: step a: mixing and dissolving deionized water, sodium carbonate, potassium carbonate and sodium chloride according to a proportion to obtain a pretreatment solution;
step b: the pretreatment liquid was heated to boiling, and then the aluminum alloy frame was immersed in the pretreatment liquid for 5 minutes.
Then coating a bottom coating, wherein the bottom coating comprises the following components in parts by weight: 20 parts of chromium nitrate, 10 parts of chromium chloride, 5 parts of tartaric acid, 6 parts of malic acid and 3 parts of diphenyl carbodihydrazide.
And then after the bottom coating is dried, spraying a heat insulation coating, wherein the heat insulation coating comprises the following components in parts by weight:
80 parts of film forming agent, 4 parts of curing agent, 0.6 part of flatting agent and 40 parts of filler;
the film forming agent is polyurethane resin, the curing agent is polyurethane curing agent of Handan City Suanzan Susan Kong Hongzheng chemical Co., Ltd, and the filler is nano silicon dioxide filler.
The leveling agent comprises the following components in percentage by weight: 30% of sodium fatty alcohol polyoxyethylene carboxylate and 70% of sodium alkyl polyoxyethylene sulfate.
The filler comprises the following components in percentage by weight: 30% of calcium carbonate whisker, 20% of hollow glass microsphere and 50% of fatty acid diethanol amine.
And finally, coating a hydrophobic layer on the heat insulation coating, wherein the hydrophobic layer is prepared from the following components in parts by weight: 20 parts of epoxy resin, 10 parts of polyamide resin, 1 part of accelerator, 4 parts of nano silicon dioxide, 0.3 part of coupling agent, 0.01 part of perfluoroalkyl triethoxysilane, 200 parts of absolute ethyl alcohol and 500 parts of acetone. The accelerant is an epoxy resin accelerant of Sanchang chemical Co., Ltd.
The process of coating the hydrophobic layer comprises the steps of:
step a: taking acetone according to a proportion, dropwise adding epoxy resin and polyamide resin into the acetone, uniformly stirring, and then dropwise adding an accelerant for later use to obtain a solution A;
step b: taking nano SiO in proportion2Dissolving in absolute ethyl alcohol, dripping a coupling agent, and then carrying out ultrasonic dispersion for 3 hours to obtain a solution B;
step c: taking absolute ethyl alcohol according to a proportion, dropwise adding 1H,1H,2H, 2H-perfluoro alkyl triethoxy silane, and uniformly stirring to obtain a solution C;
step d: and spin-coating the prepared solution A on the surface of the heat-insulating coating, and air-drying at room temperature for 20 min. Dip-coating the solution C on the surface of the air-dried sample, and placing the sample in a drying oven for 4 hours, wherein the temperature of the drying oven is set to be 100 ℃; the sample was taken out, dip-coated with solution C, and placed in a drying oven set at 100 ℃ for 4 hours.
S5: assembling and fixing the heat-insulating aluminum alloy frame and the glass;
the novel aluminum alloy window can be obtained through the above 5 steps.
The difference between the examples 2-5 and the example 1 is that the components in the pretreatment solution are listed in the following table in parts by weight.
Examples Deionized water Sodium carbonate Potassium carbonate Sodium chloride
Example 2 115 16.25 12.5 32.5
Example 3 130 17.5 15 35
Example 4 145 18.75 17.5 37.5
Example 5 160 20 20 40
Examples 6 to 9 differ from example 1 in that the components in the primer coat are in the following table in parts by weight.
Figure BDA0002471484870000071
Examples 10 to 13 differ from example 1 in that the components in the thermal barrier coating are in parts by weight as given in the following table.
Examples Film forming agent Curing agent Leveling agent Filler material
Example 10 85 5.25 0.825 70
Example 11 90 6.5 1.05 70
Example 12 95 7.75 1.275 70
Example 13 100 9 1.5 70
Examples 14 to 17 differ from example 1 in that the components in the filler and leveling agent are in the following table in weight percent.
Figure BDA0002471484870000072
Figure BDA0002471484870000081
Examples 18 to 28 differ from example 1 in that the components in the hydrophobic layer are in parts by weight in the following table.
Figure BDA0002471484870000082
Comparative example
Comparative example 1 differs from example 1 in that: the aluminum alloy window frame is not treated by pretreatment liquid;
comparative example 2 differs from example 1 in that: the aluminum alloy window frame is not coated with a bottom layer coating;
comparative example 3 differs from example 1 in that: fatty acid diethanol amine is not added into the filler;
comparative example 4 differs from example 1 in that: the aluminum alloy window frame is not coated with a hydrophobic layer;
comparative example 5 differs from example 1 in that: the sodium dodecyl sulfate is used to replace fatty acid diethanol amine in the filler.
Detection method
Thermal insulation detection
Firstly, a salt spray box is adopted to carry out salt spray corrosion on the aluminum alloy window, and the parameters are controlled as follows:
the salt mist water adopts NaCl solution with 5% mass concentration; controlling the temperature to be 30 ℃; the amount of salt spray sedimentation is controlled to be 1ml/80cm2(ii) a The operation period was controlled to 2 weeks.
After the aluminum alloy window after the salt spray corrosion test is washed and dried by deionized water, the aluminum alloy window is detected by adopting the standard of GB/T8484-2002 'grading and detecting method for thermal insulation performance of building external window', and the detection result is as follows:
Figure BDA0002471484870000083
Figure BDA0002471484870000091
and (4) conclusion: through the test results, the heat transfer coefficient of the aluminum alloy window is still lower after the aluminum alloy window is corroded by salt spray, the heat insulation effect is better, and the corrosion resistance of the heat insulation coating on the aluminum alloy window frame is improved, so that the aluminum alloy window is not easy to corrode and fall off, and the heat transfer coefficient of the aluminum alloy is increased. And comparing the comparative examples 1-4, it can be seen that the pretreatment of the pretreatment liquid on the aluminum alloy has certain protective capability on the coating of the heat-insulating coating, but the protective effect of the coating of the bottom coating on the heat-insulating coating is improved most obviously, which shows that the bottom coating is beneficial to improving the adhesive force of the heat-insulating coating on the aluminum alloy. And it can be seen from the comparison of comparative examples 3, 5 and example 1 that the addition of the fatty acid diethanol amine not only improves the dispersion uniformity of the hollow glass microspheres and calcium carbonate whiskers to improve the heat insulation effect, but also generates micro bubbles with the alkyl polyoxyethylene sodium sulfate in the leveling agent to further improve the heat insulation effect, and the test result shows that the heat transfer coefficient is significantly higher than that of example 1 by replacing the fatty acid diethanol amine with the sodium dodecyl sulfate in comparative example 5.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (8)

1. The production process of the novel aluminum alloy window is characterized by comprising the following process steps:
s1: cutting an aluminum alloy section;
s2: drilling the cut aluminum alloy section;
s3: assembling the drilled aluminum alloy section to obtain an aluminum alloy frame;
s4: coating a bottom coating on the surface of the aluminum alloy frame, and spraying a heat-insulating coating after the bottom coating is dried to obtain a heat-insulating aluminum alloy frame; the heat insulation coating comprises the following components in parts by weight:
Figure FDA0002471484860000011
s5: assembling and fixing the heat-insulating aluminum alloy frame and the glass;
the novel aluminum alloy window can be obtained through the above 5 steps.
2. The production process of a novel aluminum alloy window according to claim 1, characterized in that: the leveling agent comprises the following components in percentage by weight:
30-50% of sodium fatty alcohol polyoxyethylene carboxylate;
50-70% of alkyl polyoxyethylene sodium sulfate.
3. The production process of a novel aluminum alloy window according to claim 1, characterized in that: the filler comprises the following components in percentage by weight:
30-50% of calcium carbonate whiskers;
20-40% of hollow glass beads;
10-50% of fatty acid diethanolamine.
4. The production process of a novel aluminum alloy window according to claim 1, characterized in that: the heat-insulating coating is also coated with a hydrophobic layer, and the hydrophobic layer is prepared from the following components in parts by weight:
Figure FDA0002471484860000012
Figure FDA0002471484860000021
5. the production process of a novel aluminum alloy window according to claim 1, characterized in that: the coating process of the hydrophobic layer comprises the following steps:
step a: taking acetone according to a proportion, dropwise adding epoxy resin and polyamide resin into the acetone, uniformly stirring, and then dropwise adding an accelerant for later use to obtain a solution A;
step b: taking nano SiO in proportion2Dissolving in absolute ethyl alcohol, dripping a coupling agent, and then carrying out ultrasonic dispersion for 3 hours to obtain a solution B;
step c: taking absolute ethyl alcohol according to a proportion, dropwise adding 1H,1H,2H, 2H-perfluoro alkyl triethoxy silane, and uniformly stirring to obtain a solution C;
step d: and spin-coating the prepared solution A on the surface of the heat-insulating coating, and air-drying at room temperature for 20-30 min. Dip-coating the solution C on the surface of the air-dried sample, and placing the sample in a drying oven for 4-5 hours, wherein the temperature of the drying oven is set to be 100 ℃; taking out the sample, dip-coating the solution C, and placing the sample in a drying oven for 4-5h, wherein the temperature of the drying oven is set to be 100 ℃.
6. The production process of a novel aluminum alloy window according to claim 1, characterized in that: the primer coating is pretreated by the following steps before coating, and the pretreatment liquid comprises the following components in parts by weight:
Figure FDA0002471484860000022
7. the production process of a novel aluminum alloy window according to claim 1, characterized in that: the pretreatment comprises the following steps:
step a: mixing and dissolving deionized water, sodium carbonate, potassium carbonate and sodium chloride according to a proportion to obtain a pretreatment solution;
step b: and heating the pretreatment liquid to boiling, and then immersing the aluminum alloy frame into the pretreatment liquid for 5-10 minutes.
8. The production process of a novel aluminum alloy window according to claim 1, characterized in that: the bottom coating comprises the following components in parts by weight:
Figure FDA0002471484860000031
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