CN112501602A - Preparation method of flame-retardant fluorocarbon aluminum veneer for furniture decoration - Google Patents
Preparation method of flame-retardant fluorocarbon aluminum veneer for furniture decoration Download PDFInfo
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- CN112501602A CN112501602A CN202011540692.0A CN202011540692A CN112501602A CN 112501602 A CN112501602 A CN 112501602A CN 202011540692 A CN202011540692 A CN 202011540692A CN 112501602 A CN112501602 A CN 112501602A
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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
- C23C22/68—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 solutions with pH between 6 and 8
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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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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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
- B05D7/24—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 for applying particular liquids or other fluent materials
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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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- 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
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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
-
- 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
- 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
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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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- 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
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
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- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
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Abstract
The invention discloses a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration, which comprises the following process steps: firstly, performing sheet metal processing on an aluminum alloy panel, then performing pretreatment (including chromium-free passivation) on the aluminum alloy panel, then treating by adopting a fluorine-silicon water-based paint to form a fluorocarbon primer layer, and then treating by adopting a flame-retardant fluorocarbon finish paint layer to form a fluorocarbon bottom layer. The fluorocarbon bottom layer adopts fluorocarbon resin and organic silicon resin as film forming materials, then hydroxyl modified silicon dioxide and magnalium base layered composite hydroxide are added, so that the strength of a film forming framework can be effectively improved, and the density of a formed film can be remarkably improved by adding an organic tin catalyst and a sodium borate catalyst. The magnesium-aluminum-based layered composite hydroxide is added to form a magnesium-aluminum spinel structure at high temperature, the high temperature resistance can reach over 1800 ℃, the effect is very good, the layered structure is favorable for absorbing toxic smoke, and the safety of the material can be effectively improved.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration.
Background
Most of traditional building decoration materials adopt stone materials and gypsum boards, the building cost is increased due to the fact that the decoration materials are heavy in weight, complex in installation and processing technology and simple in modeling, and the design intention of a building designer cannot be well expressed due to the limitation of the performance of the materials. Due to the excellent processing performance, the light weight, the low price and other factors of the aluminum veneer, the aluminum veneer can be widely applied to the field of building decoration, the material and installation cost is greatly reduced, and the construction period of a building is shortened. In recent years, with the demand of market development and the improvement of industrial product grades, people have higher and higher requirements on various performances of the aluminum veneer, however, the performances of the aluminum veneer are closely related to the manufacturing process of the aluminum veneer.
The fluorocarbon coating has high chemical corrosion resistance, heat resistance, weather resistance and durability, and is inactive to a plurality of acids, alkalis and solvents, so the fluorocarbon coating is widely applied to the field of building decoration. At present, a great deal of research is made on the aspect of nano modification of fluorocarbon coatings at home: patent CN 103131275A discloses a nano-silica fluorocarbon coating, which has better stability after being added with nano-silica, improves the dispersibility, anti-sedimentation and anti-flowing property of the filler, and improves the adhesive force of a paint film; patent CN 101440243a discloses a nano titanium dioxide fluorocarbon coating, in which nano titanium dioxide has strong ultraviolet absorption ability, greatly reduces the invasion of ultraviolet rays to polymer material chains, reduces the generation of active free radicals, and protects the polymer chains from being degraded by ultraviolet rays.
However, the requirement for the flame retardant property of the material in the field of the current interior decoration is higher and higher, and in order to improve the flame retardant property of the fluorocarbon aluminum veneer, the invention provides a preparation method of the flame retardant fluorocarbon aluminum veneer for furniture decoration.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration.
A preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration comprises the following process steps:
1. sheet metal processing: selecting an aluminum alloy panel with the thickness of 2-4mm for sheet metal processing;
2. pretreatment: degreasing: degreasing the aluminum alloy panel obtained in the step (1) with degreasing fluid at 50-80 ℃ for 2-5 min; washing with water; acid washing: pickling with pickling solution at room temperature for 2-3 min; washing with water; passivation: carrying out passivation treatment on the surface of the aluminum plate by adopting a chromium-free passivation solution; washing with water; drying; drying at the temperature lower than 60 ℃ to obtain a chemical treatment layer with the thickness of 25-30 mu m on the surface of the aluminum alloy;
3. spraying: spraying fluorocarbon primer on the surface of the chemical treatment layer obtained by the treatment in the step 2 to form a fluorocarbon primer layer, wherein the thickness of the fluorocarbon primer layer is controlled to be 15-25 mu m; leveling for 4-6min at room temperature, and drying at 160-180 deg.C; continuously spraying fluorocarbon finish paint to form a flame-retardant fluorocarbon finish paint layer, and controlling the thickness of the fluorocarbon finish paint layer to be 120-150 mu m; leveling for 15-20min at room temperature; drying at the temperature of 220 ℃ and 250 ℃ to obtain the finished product of the fluorocarbon aluminum veneer.
Preferably, the chromium-free passivation solution comprises, by weight, 8-15% of molybdate, 2-3% of sodium citrate, 5-8% of methacryloxypropyltrimethoxysilane, 3-5% of sodium dodecyl sulfate and the balance of water.
Preferably, the fluorocarbon primer is a fluorine-silicon water-based paint.
Preferably, the fluorocarbon finish paint comprises, by weight, 45-55% of fluorocarbon resin, 8-15% of organic silicon resin, 0.1-0.3% of organic silicon leveling agent, 0.5-0.8% of organic tin catalyst, 0.1-0.2% of sodium borate catalyst, 10-15% of butyl acetate, 9-12% of aliphatic isocyanate curing agent, 5-8% of modified silicon dioxide and the balance of layered hydroxide.
Further preferably, the modified silica is hydroxyl silica nanoparticles.
Further preferably, the particle size of the hydroxyl silica nano-particles is 60-120 nm.
Further preferably, the layered hydroxide is a magnesium aluminum based layered composite hydroxide.
Compared with the prior art, the invention has the advantages that: the preparation method of the flame-retardant fluorocarbon aluminum veneer for furniture decoration comprises the following process steps: firstly, performing sheet metal processing on an aluminum alloy panel, then performing pretreatment (including chromium-free passivation) on the aluminum alloy panel, then treating by adopting a fluorine-silicon water-based paint to form a fluorocarbon primer layer, and then treating by adopting a flame-retardant fluorocarbon finish paint layer to form a fluorocarbon bottom layer. The fluorocarbon bottom layer adopts fluorocarbon resin and organic silicon resin as film forming materials, then hydroxyl modified silicon dioxide and magnalium base layered composite hydroxide are added, so that the strength of a film forming framework can be effectively improved, and the density of a formed film can be remarkably improved by adding an organic tin catalyst and a sodium borate catalyst; the magnesium-aluminum-based layered composite hydroxide is added to form a magnesium-aluminum spinel structure at high temperature, the high temperature resistance can reach over 1800 ℃, the effect is very good, the layered structure is favorable for absorbing toxic smoke, and the safety of the material can be effectively improved.
Detailed Description
Example 1:
the invention provides a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration, which comprises the following steps:
1. sheet metal processing: selecting an aluminum alloy panel with the thickness of 3.2mm for sheet metal processing;
2. pretreatment: degreasing: degreasing the aluminum alloy panel obtained in the step (1) with degreasing fluid at 75 ℃ for 3 min; washing with water; acid washing: pickling with pickling solution at room temperature for 2.5 min; washing with water; passivation: carrying out passivation treatment on the surface of the aluminum plate by adopting a chromium-free passivation solution; washing with water; drying; drying at the temperature lower than 60 ℃ to obtain a chemical treatment layer with the thickness of 28 microns on the surface of the aluminum alloy;
3. spraying: spraying fluorocarbon primer on the surface of the chemical treatment layer obtained by the treatment in the step 2 to form a fluorocarbon primer layer, and controlling the thickness of the fluorocarbon primer layer to be 22 mu m; leveling for 5min at room temperature, and drying at 165 ℃; continuously spraying fluorocarbon finish paint to form a flame-retardant fluorocarbon finish paint layer, wherein the thickness of the fluorocarbon finish paint layer is controlled to be 130 mu m; leveling for 18min at room temperature; drying at 235 ℃ to obtain the finished product of the fluorocarbon aluminum veneer.
The chromium-free passivation solution comprises, by weight, 22% of molybdate, 2.5% of sodium citrate, 7.5% of methacryloxypropyltrimethoxysilane, 4% of sodium dodecyl sulfate and the balance of water.
The fluorocarbon primer is fluorine-silicon water-based paint.
The fluorocarbon finish paint comprises, by weight, 48% of fluorocarbon resin, 12% of organic silicon resin, 0.25% of organic silicon flatting agent, 0.65% of organic tin catalyst, 0.15% of sodium borate catalyst, 12% of butyl acetate, 10% of aliphatic isocyanate curing agent, 6% of modified silicon dioxide and the balance of layered hydroxide.
The modified silicon dioxide is hydroxyl silicon dioxide nano-particles. The particle size of the hydroxyl silicon dioxide nano-particles is 60-120 nm.
The layered hydroxide is magnesium aluminum based layered composite hydroxide.
Example 2:
the invention provides a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration, which comprises the following steps:
1. sheet metal processing: selecting an aluminum alloy panel with the thickness of 4mm for sheet metal processing;
2. pretreatment: degreasing: degreasing the aluminum alloy panel obtained in the step (1) with degreasing fluid at 50 ℃ for 5 min; washing with water; acid washing: pickling with pickling solution at room temperature for 2 min; washing with water; passivation: carrying out passivation treatment on the surface of the aluminum plate by adopting a chromium-free passivation solution; washing with water; drying; drying at the temperature lower than 60 ℃ to obtain a chemical treatment layer with the thickness of 30 mu m on the surface of the aluminum alloy;
3. spraying: spraying fluorocarbon primer on the surface of the chemical treatment layer obtained by the treatment in the step 2 to form a fluorocarbon primer layer, and controlling the thickness of the fluorocarbon primer layer to be 15 mu m; leveling for 6min at room temperature, and drying at 160 ℃; continuously spraying fluorocarbon finish paint to form a flame-retardant fluorocarbon finish paint layer, wherein the thickness of the fluorocarbon finish paint layer is controlled to be 135 mu m; leveling for 20min at room temperature; drying at 250 ℃ to obtain the finished product of the fluorocarbon aluminum veneer.
The chromium-free passivation solution comprises, by weight, 18% of molybdate, 3% of sodium citrate, 5% of methacryloxypropyl trimethoxysilane, 5% of sodium dodecyl sulfate and the balance of water.
The fluorocarbon primer is fluorine-silicon water-based paint.
The fluorocarbon finish paint comprises, by weight, 55% of fluorocarbon resin, 8% of organic silicon resin, 0.3% of organic silicon flatting agent, 0.5% of organic tin catalyst, 0.2% of sodium borate catalyst, 10% of butyl acetate, 12% of aliphatic isocyanate curing agent, 5% of modified silicon dioxide and the balance of layered hydroxide.
The modified silicon dioxide is hydroxyl silicon dioxide nano-particles. The particle size of the hydroxyl silicon dioxide nano-particles is 60-120 nm.
The layered hydroxide is magnesium aluminum based layered composite hydroxide.
Example 3:
the invention provides a preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration, which comprises the following steps:
1. sheet metal processing: selecting an aluminum alloy panel with the thickness of 2mm for sheet metal processing;
2. pretreatment: degreasing: degreasing the aluminum alloy panel obtained in the step (1) with degreasing fluid at 80 ℃ for 2 min; washing with water; acid washing: pickling with pickling solution at room temperature for 3 min; washing with water; passivation: carrying out passivation treatment on the surface of the aluminum plate by adopting a chromium-free passivation solution; washing with water; drying; drying at the temperature lower than 60 ℃ to obtain a chemical treatment layer with the thickness of 25 mu m on the surface of the aluminum alloy;
3. spraying: spraying fluorocarbon primer on the surface of the chemical treatment layer obtained by the treatment in the step 2 to form a fluorocarbon primer layer, and controlling the thickness of the fluorocarbon primer layer to be 25 mu m; leveling for 4min at room temperature, and drying at 180 deg.C; continuously spraying fluorocarbon finish paint to form a flame-retardant fluorocarbon finish paint layer, wherein the thickness of the fluorocarbon finish paint layer is controlled to be 130 mu m; leveling for 15min at room temperature; drying at 220 ℃ to obtain the finished product of the fluorocarbon aluminum veneer.
The chromium-free passivation solution comprises, by weight, 25% of molybdate, 2% of sodium citrate, 8% of methacryloxypropyl trimethoxysilane, 3% of sodium dodecyl sulfate and the balance of water.
The fluorocarbon primer is fluorine-silicon water-based paint.
The fluorocarbon finish paint comprises, by weight, 45% of fluorocarbon resin, 15% of organic silicon resin, 0.1% of organic silicon flatting agent, 0.8% of organic tin catalyst, 0.1% of sodium borate catalyst, 15% of butyl acetate, 9% of aliphatic isocyanate curing agent, 8% of modified silicon dioxide and the balance of layered hydroxide.
The modified silicon dioxide is hydroxyl silicon dioxide nano-particles. The particle size of the hydroxyl silicon dioxide nano-particles is 60-120 nm.
The layered hydroxide is magnesium aluminum based layered composite hydroxide.
The fluorocarbon aluminum single plates prepared in examples 1 to 3 were tested to obtain the following test data, and the specific data are shown in table 1.
Table 1:
and (3) testing the fireproof performance: the coating films of examples 1 to 3 were baked with an alcohol burner flame 5cm from the coating layer, the thickness of the coating layer was 1mm, and the duration of the firing was 5 min. As a result: the coating can form a uniform and compact carbonization zone without generating smoke.
The test data show that the fluorocarbon aluminum veneer has good flame retardant property.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A preparation method of a flame-retardant fluorocarbon aluminum veneer for furniture decoration is characterized by comprising the following process steps:
sheet metal processing: selecting an aluminum alloy panel with the thickness of 2-4mm for sheet metal processing;
pretreatment: degreasing: degreasing the aluminum alloy panel obtained in the step (1) with degreasing fluid at 50-80 ℃ for 2-5 min; washing with water; acid washing: pickling with pickling solution at room temperature for 2-3 min; washing with water; passivation: carrying out passivation treatment on the surface of the aluminum plate by adopting a chromium-free passivation solution; washing with water; drying; drying at the temperature lower than 60 ℃ to obtain a chemical treatment layer with the thickness of 25-30 mu m on the surface of the aluminum alloy;
spraying: spraying fluorocarbon primer on the surface of the chemical treatment layer obtained by the treatment in the step 2 to form a fluorocarbon primer layer, wherein the thickness of the fluorocarbon primer layer is controlled to be 15-25 mu m; leveling for 4-6min at room temperature, and drying at 160-180 deg.C; continuously spraying fluorocarbon finish paint to form a flame-retardant fluorocarbon finish paint layer, and controlling the thickness of the fluorocarbon finish paint layer to be 120-150 mu m; leveling for 15-20min at room temperature; drying at the temperature of 220 ℃ and 250 ℃ to obtain the finished product of the fluorocarbon aluminum veneer.
2. The method for preparing a flame-retardant fluorocarbon aluminum veneer for furniture decoration according to claim 1, wherein the chromium-free passivation solution comprises, by weight, 8-15% of molybdate, 2-3% of sodium citrate, 5-8% of methacryloxypropyltrimethoxysilane, 3-5% of sodium dodecyl sulfate, and the balance of water.
3. The method for preparing a fire-retardant fluorocarbon aluminum veneer for furniture finishing as claimed in claim 1, wherein said fluorocarbon primer is a fluorosilicone water-based paint.
4. The method for preparing a flame-retardant fluorocarbon aluminum veneer for furniture decoration according to claim 1, wherein the fluorocarbon finish paint comprises, by weight, 45-55% of fluorocarbon resin, 8-15% of silicone resin, 0.1-0.3% of silicone leveling agent, 0.5-0.8% of organotin catalyst, 0.1-0.2% of sodium borate catalyst, 10-15% of butyl acetate, 9-12% of aliphatic isocyanate curing agent, 5-8% of modified silica, and the balance of layered hydroxide.
5. The method for preparing a fire-retardant fluorocarbon aluminum veneer for furniture finishing as claimed in claim 4, wherein said modified silica is hydroxyl silica nanoparticles.
6. The method for preparing a fire-retardant fluorocarbon aluminum veneer for furniture finishing as claimed in claim 5, wherein the particle size of said hydroxyl silica nanoparticles is 60-120 nm.
7. The method of claim 4, wherein the layered hydroxide is a magnesium aluminum based layered composite hydroxide.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277047A (en) * | 2011-07-25 | 2011-12-14 | 苏州金近幕墙有限公司 | Finish for building curtain wall aluminum veneer, and preparation method thereof |
| CN103629509A (en) * | 2013-10-29 | 2014-03-12 | 潼南华轩绿色建材有限公司 | Production method of fluorine-carbon aluminum veneer |
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