CN108385896B - Corrosion-resistant aluminum honeycomb core and preparation method of aluminum honeycomb plate - Google Patents
Corrosion-resistant aluminum honeycomb core and preparation method of aluminum honeycomb plate Download PDFInfo
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- CN108385896B CN108385896B CN201810211797.8A CN201810211797A CN108385896B CN 108385896 B CN108385896 B CN 108385896B CN 201810211797 A CN201810211797 A CN 201810211797A CN 108385896 B CN108385896 B CN 108385896B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/162—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/16—Drying; Softening; Cleaning
- B32B38/164—Drying
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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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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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
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J113/00—Adhesives based on rubbers containing carboxyl groups
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/08—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of metal, e.g. sheet metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract
The invention provides a corrosion-resistant aluminum honeycomb core and a preparation method of an aluminum honeycomb plate, wherein through holes and through grooves are formed in the process of preparing the aluminum honeycomb core, so that residual air in the honeycomb core can be fully discharged when the honeycomb core is welded with an aluminum plate, the aluminum foil of the honeycomb core is prevented from being oxidized in the high-temperature welding process, and meanwhile, a corrosion-resistant layer is further coated on the exposed surface of the aluminum foil, so that the oxidation resistance and corrosion resistance of the aluminum foil are improved, the weather resistance of the aluminum foil is improved, and the service life of the aluminum honeycomb core is prolonged.
Description
Technical Field
The invention relates to the field of buildings, in particular to a corrosion-resistant aluminum honeycomb core and a preparation method of an aluminum honeycomb plate.
Background
The honeycomb structure has a large strength/weight ratio, can meet the requirement of large strength with a small section, and can greatly reduce the self weight of the structure body. Therefore, the honeycomb structure has the advantages of good structural stability and good impact resistance and buffering performance. The honeycomb plate formed by clamping the core body of the honeycomb structure by the double-layer aluminum plate has a series of advantages of light weight, high specific strength, high rigidity, good stability, heat insulation, sound insulation, no pollution and the like, and is widely used in the fields of aerospace, airplanes, trains, ships, buildings and the like. At present, the preparation method of the honeycomb plate generally adopts the vacuum welding of an aluminum honeycomb core obtained by stretching and aluminum plates on two sides, but because air remains among a plurality of layers of aluminum foils forming the aluminum honeycomb core, the oxygen of the air can oxidize the aluminum foils and the connection between the aluminum foils, thereby influencing the service life of the honeycomb core.
Disclosure of Invention
The invention provides a corrosion-resistant aluminum honeycomb core and a preparation method of an aluminum honeycomb plate, wherein through holes and through grooves are formed in the honeycomb core in the process of preparing the aluminum honeycomb core, so that residual air in the honeycomb core can be fully discharged when the honeycomb core is welded with an aluminum plate, the aluminum foil of the honeycomb core is prevented from being oxidized in the high-temperature welding process, meanwhile, a corrosion-resistant layer is further coated on the exposed surface of the aluminum foil, the oxidation resistance and corrosion resistance of the aluminum foil are improved, and the weather resistance and the service life of the aluminum honeycomb core are improved.
The specific scheme is as follows:
a preparation method of a corrosion-resistant aluminum honeycomb core comprises the following steps:
1) and cleaning the surface of the aluminum foil by using ultrasonic waves:
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil;
3) drying to obtain the aluminum foil with the corrosion-resistant layer;
4) coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminate to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) and stretching the laminated body obtained in the step 9 along the laminating direction to obtain the aluminum honeycomb core with the honeycomb structure.
Further, the corrosion-resistant slurry comprises the following formula components in parts by mass: 30-40 parts of hexafluorobutyl methacrylate, 20-30 parts of triethylamine, 30-35 parts of ethylene glycol dimethacrylate, 16-22 parts of molybdenum disulfide, 15-20 parts of silicon carbide, 8-12 parts of boron oxide, 10-15 parts of calcium carbonate, 5-10 parts of nano titanium dioxide and 60-70 parts of azobisisobutyronitrile.
Further, the adhesive comprises, by mass, 80-90 parts of carboxyl-terminated nitrile rubber, 50-80 parts of ethylene propylene diene monomer, 20-30 parts of propylene epoxide phenyl ether, 5-10 parts of chlorine vulcanized polyethylene, 10-20 parts of diamine, 30-40 parts of cyclohexanone, 1-3 parts of sulfur and 3-5 parts of graphite powder.
Further, the corrosion-resistant slurry comprises the following formula components in parts by mass: 35 parts of hexafluorobutyl methacrylate, 25 parts of triethylamine, 32 parts of ethylene glycol dimethacrylate, 18 parts of molybdenum disulfide, 18 parts of silicon carbide, 10 parts of boron oxide, 12 parts of calcium carbonate, 8 parts of nano titanium dioxide and 65 parts of azobisisobutyronitrile.
Furthermore, the adhesive comprises the following formula components, by mass, 85 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 60 parts of ethylene propylene diene monomer, 25 parts of propylene oxide phenyl ether, 7 parts of chlorine vulcanized polyethylene, 15 parts of diamine, 35 parts of cyclohexanone, 2 parts of sulfur and 4 parts of graphite powder.
The invention has the following beneficial effects:
1) the connection part of the honeycomb core is coated with glue in a strip shape, so that the using amount of the adhesive is reduced, and the cost is reduced;
2) through the arrangement of the through holes, air among the multiple layers of aluminum foils can be smoothly discharged, and the residual oxygen corrosion is avoided during the later vacuum welding with the aluminum plate;
3) through the through grooves arranged on the cutting surfaces, an exhaust channel can be further reserved on the joint surface when the aluminum plate is welded with the cutting surfaces of the honeycomb core;
4) the anti-corrosion layer is arranged, so that the oxidation resistance and weather resistance of the aluminum foil are improved, and the service life of the honeycomb core is prolonged;
5) the corrosion-resistant layer disclosed by the invention has the advantages of strong corrosion resistance, super-hydrophobic oleophobic property and salt mist resistance, good oxidation resistance, high strength, strong adhesion property and difficulty in falling off.
As a further improvement of the present invention, a first adhesive is applied to regions adjoining the corrosion-resistant layer on both sides of an adhesion region, the area of the region coated with the first adhesive being 1/3-1/5 of the area of the adhesion region, and a second adhesive is applied to the remaining adhesion region between the regions coated with the first adhesive; the first adhesive comprises the following formula components, by mass, 85 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 60 parts of ethylene propylene diene monomer, 25 parts of propylene oxide phenyl ether, 7 parts of chlorosulfonated polyethylene, 15 parts of hydrogen diamine, 35 parts of cyclohexanone, 2 parts of sulfur and 4 parts of graphite powder. The second adhesive comprises, by mass, 50 parts of hydroxymethyl bisphenol A glycidyl ether, 2 parts of polydimethylsiloxane, 35 parts of zinc oxide powder, 5 parts of carbon black, 35 parts of vinyl triamine, 30 parts of H-4 epoxy curing agent and 15 parts of fumed silica. The first adhesive has the advantages of low cost, good adhesion effect, good combination with metal, good heat resistance, corrosion resistance and oxidation resistance, and high fatigue resistance. The second adhesive has a faster curing speed and a stronger environmental adaptability than the first adhesive, and can be bonded on a metal surface with oil or water. The first adhesive and the second adhesive are matched for use, so that the advantages that the fatigue resistance of the first adhesive is high and the second adhesive can be cured at a complex interface more quickly can be fully exerted, and the bonding strength and the durability of the aluminum honeycomb core are improved;
as a further improvement of the invention, a foaming resin material is filled in the honeycomb core to form a support in the honeycomb core and avoid collapse of the honeycomb core due to external force, and a resin solution comprises the following formula components, by mass, 90-100 parts of organosilicon modified acrylic resin, 25-30 parts of chopped carbon fibers, 3-5 parts of polyoxyethylene fatty alcohol ether, 1-2 parts of p-toluenesulfonic acid, 3-5 parts of sodium bicarbonate, 18-20 parts of aluminum trifluoride, 27-30 parts of cesium fluoride, 0.5-1 part of zinc chloride and 0.3-0.5 part of tin chloride, wherein the resin solution has high wettability and can be fully immersed in the honeycomb core, and metal compounds in the resin solution can spontaneously generate brazing reaction at high temperature, so that a support structure is formed in the honeycomb core and the strength of the honeycomb core is improved;
as a further improvement of the invention, grooves are engraved on an aluminum plate for clamping the honeycomb core, when the aluminum plate is connected with the cross section of the honeycomb core, the aluminum foil of the honeycomb core is embedded into the grooves, the connection strength of the aluminum foil and the honeycomb core is improved, and meanwhile, a self-reaction brazing filler metal is added, so that the welding effect is improved, wherein the self-reaction brazing filler metal comprises the following formula components in parts by mass, 15 parts of aluminum trifluoride, 20 parts of cesium fluoride, 0.8 part of zinc chloride, 0.4 part of tin chloride, 25 parts of aluminum powder, 5 parts of zinc powder, 4 parts of titanium powder and 4 parts of tin powder. The brazing filler metal can perform self reaction at a lower temperature, reduces the energy consumption of welding and has higher welding strength.
As a further improvement, the invention provides a preparation method of the aluminum honeycomb plate, which comprises the following steps:
1) and cleaning the surface of the aluminum foil by using ultrasonic waves:
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil;
3) drying to obtain the aluminum foil with the corrosion-resistant layer;
4) coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; wherein regions adjoining the corrosion-resistant layer on both sides of the bonding regions are coated with a first bonding agent, the area of the region coated with the first bonding agent is 1/3-1/5 of the area of the bonding region, and the remaining bonding regions between the regions coated with the first bonding agent are coated with a second bonding agent;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminate to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) stretching the laminated body obtained in the step 9 along the laminating direction to obtain an aluminum honeycomb core with a honeycomb structure;
11) immersing the aluminum honeycomb core into a resin solution containing reinforcing fibers, immersing the solution into the core body, taking out the core body, heating to foam and solidify the resin, and obtaining the composite aluminum honeycomb core filled with the foaming resin material
12) Cutting an aluminum plate into a preset size, arranging a groove on the surface of one side of the aluminum plate, wherein the pattern formed by the groove is the same as the pattern formed by the aluminum foil on the cutting surface with the through groove of the aluminum honeycomb core, and arranging a self-reaction brazing filler metal in the groove;
13) attaching the two aluminum plates to the cutting surface of the aluminum honeycomb core, and embedding the aluminum foil on the side of the cutting surface into the groove to obtain a sandwich structure body with the aluminum honeycomb core clamped by the two aluminum plates;
14) and placing the sandwich structure body into a vacuum heating furnace for heating and brazing to obtain the honeycomb plate.
Detailed Description
The present invention will be described in more detail below with reference to specific examples, but the scope of the present invention is not limited to these examples.
Example 1
1) Cleaning the surface of the aluminum foil by using ultrasonic waves, wherein the ultrasonic power is 1kW, the frequency is 50MHz, and the cleaning speed is 20 m/min;
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil; the corrosion-resistant slurry comprises the following formula components in parts by mass: 30 parts of hexafluorobutyl methacrylate, 20 parts of triethylamine, 30 parts of ethylene glycol dimethacrylate, 16 parts of molybdenum disulfide, 15 parts of silicon carbide, 8 parts of boron oxide, 10 parts of calcium carbonate, 5 parts of nano titanium dioxide and 60 parts of azobisisobutyronitrile;
3) drying at 80 ℃ for 120min to obtain the aluminum foil with the corrosion-resistant layer;
4) coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; the adhesive comprises the following formula components, by mass, 80 parts of carboxyl-terminated nitrile rubber, 50 parts of ethylene propylene diene monomer, 20 parts of epoxypropane phenyl ether, 5 parts of chlorine vulcanized polyethylene, 10 parts of dihydroamine, 30 parts of cyclohexanone, 1 part of sulfur and 3 parts of graphite powder;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminated body at 160 ℃ for 100min to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) and stretching the laminated body obtained in the step 9 along the laminating direction to obtain the aluminum honeycomb core with the honeycomb structure.
Example 2
1) Cleaning the surface of the aluminum foil by using ultrasonic waves, wherein the ultrasonic power is 1kW, the frequency is 50MHz, and the cleaning speed is 20 m/min;
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil; the corrosion-resistant slurry comprises the following formula components in parts by mass: 40 parts of hexafluorobutyl methacrylate, 30 parts of triethylamine, 35 parts of ethylene glycol dimethacrylate, 22 parts of molybdenum disulfide, 20 parts of silicon carbide, 12 parts of boron oxide, 15 parts of calcium carbonate, 10 parts of nano titanium dioxide and 70 parts of azobisisobutyronitrile;
3) drying at 80 ℃ for 120min to obtain the aluminum foil with the corrosion-resistant layer
4) Coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; the adhesive comprises the following formula components, by mass, 90 parts of carboxyl-terminated nitrile rubber, 80 parts of ethylene propylene diene monomer, 30 parts of epoxypropane phenyl ether, 10 parts of chlorine vulcanized polyethylene, 20 parts of dihydroamine, 40 parts of cyclohexanone, 3 parts of sulfur and 5 parts of graphite powder;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminated body at 160 ℃ for 100min to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) and stretching the laminated body obtained in the step 9 along the laminating direction to obtain the aluminum honeycomb core with the honeycomb structure.
Example 3
1) Cleaning the surface of the aluminum foil by using ultrasonic waves, wherein the ultrasonic power is 1kW, the frequency is 50MHz, and the cleaning speed is 20 m/min;
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil; the corrosion-resistant slurry comprises the following formula components in parts by mass: 35 parts of hexafluorobutyl methacrylate, 25 parts of triethylamine, 32 parts of ethylene glycol dimethacrylate, 18 parts of molybdenum disulfide, 18 parts of silicon carbide, 10 parts of boron oxide, 12 parts of calcium carbonate, 8 parts of nano titanium dioxide and 65 parts of azobisisobutyronitrile;
3) drying at 80 ℃ for 120min to obtain the aluminum foil with the corrosion-resistant layer
4) Coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; the adhesive comprises the following formula components, by mass, 85 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 60 parts of ethylene propylene diene monomer, 25 parts of propylene oxide phenyl ether, 7 parts of chlorine vulcanized polyethylene, 15 parts of dihydroamine, 35 parts of cyclohexanone, 2 parts of sulfur and 4 parts of graphite powder;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminated body at 160 ℃ for 100min to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) and stretching the laminated body obtained in the step 9 along the laminating direction to obtain the aluminum honeycomb core with the honeycomb structure.
Example 4
1) Cleaning the surface of the aluminum foil by using ultrasonic waves, wherein the ultrasonic power is 1kW, the frequency is 50MHz, and the cleaning speed is 20 m/min;
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil; the corrosion-resistant slurry comprises the following formula components in parts by mass: 35 parts of hexafluorobutyl methacrylate, 25 parts of triethylamine, 32 parts of ethylene glycol dimethacrylate, 18 parts of molybdenum disulfide, 18 parts of silicon carbide, 10 parts of boron oxide, 12 parts of calcium carbonate, 8 parts of nano titanium dioxide and 65 parts of azobisisobutyronitrile;
3) drying at 80 ℃ for 120min to obtain the aluminum foil with the corrosion-resistant layer;
4) coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; wherein regions adjoining the corrosion-resistant layer on both sides of a bonding region are coated with a first bonding agent, the area of the region coated with the first bonding agent is 1/4 of the area of the bonding region, and the remaining bonding regions between the regions coated with the first bonding agent are coated with a second bonding agent; the first adhesive comprises the following formula components, by mass, 85 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 60 parts of ethylene propylene diene monomer, 25 parts of propylene oxide phenyl ether, 7 parts of chlorosulfonated polyethylene, 15 parts of hydrogen diamine, 35 parts of cyclohexanone, 2 parts of sulfur and 4 parts of graphite powder. The second adhesive comprises the following formula components, by mass, 50 parts of hydroxymethyl bisphenol A glycidyl ether, 2 parts of polydimethylsiloxane, 35 parts of zinc oxide powder, 5 parts of carbon black, 35 parts of vinyl triamine, 30 parts of H-4 epoxy curing agent and 15 parts of fumed silica;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminated body to cure the adhesive, wherein the hot-pressing temperature is controlled at 160 ℃, and the hot-pressing time is controlled at 90 min;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) stretching the laminated body obtained in the step 9 along the laminating direction to obtain an aluminum honeycomb core with a honeycomb structure;
11) immersing the aluminum honeycomb core into a resin solution containing reinforcing fibers, immersing the solution into the core body, taking out the core body, and heating at 140 ℃ to foam and solidify the resin to obtain a composite aluminum honeycomb core filled with a foaming resin material; the resin solution containing the reinforced fibers comprises the following formula components, by mass, 80 parts of organic silicon modified acrylic resin, 20 parts of chopped carbon fibers, 3 parts of polyoxyethylene fatty alcohol ether, 1 part of p-toluenesulfonic acid, 3 parts of sodium bicarbonate, 10 parts of aluminum trifluoride, 15 parts of cesium fluoride, 0.5 part of zinc chloride and 0.3 part of tin chloride;
12) cutting an aluminum plate into a preset size, arranging a groove on the surface of one side of the aluminum plate, wherein the pattern formed by the groove is the same as the pattern formed by the aluminum foil on the cutting surface with the through groove of the aluminum honeycomb core, and arranging a self-reaction brazing filler metal in the groove; the self-reaction brazing filler metal comprises the following formula components, by mass, 15 parts of aluminum trifluoride, 20 parts of cesium fluoride, 0.8 part of zinc chloride, 0.4 part of tin chloride, 25 parts of aluminum powder, 5 parts of zinc powder, 4 parts of titanium powder and 4 parts of tin powder;
13) attaching the two aluminum plates to the cutting surface of the aluminum honeycomb core, and embedding the aluminum foil on the side of the cutting surface into the groove to obtain a sandwich structure body with the aluminum honeycomb core clamped by the two aluminum plates; the depth of the through groove is greater than that of the groove, so that a channel for gas circulation is reserved on the abutting surface;
14) and placing the sandwich structure body into a vacuum heating furnace, vacuumizing, heating at 550 ℃ and brazing to obtain the honeycomb plate.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention.
Claims (5)
1. A preparation method of a corrosion-resistant aluminum honeycomb core is characterized by comprising the following steps:
1) and cleaning the surface of the aluminum foil by using ultrasonic waves:
2) coating corrosion-resistant slurry on two surfaces of the aluminum foil to form a plurality of mutually spaced and mutually parallel strip-shaped areas with the slurry, wherein the strip-shaped areas are equal in width, the length of each strip-shaped area is equal to that of the aluminum foil along the strip-shaped area, and the width of a blank area at the interval of the strip-shaped areas is 1/3 of the width of each strip-shaped area; wherein a projection of the blank region on one side surface of the aluminum foil in a thickness direction of the aluminum foil is located at a central position of the strip region on the other side surface of the aluminum foil; the corrosion-resistant slurry comprises the following formula components in parts by mass: 30-40 parts of hexafluorobutyl methacrylate, 20-30 parts of triethylamine, 30-35 parts of ethylene glycol dimethacrylate, 16-22 parts of molybdenum disulfide, 15-20 parts of silicon carbide, 8-12 parts of boron oxide, 10-15 parts of calcium carbonate, 5-10 parts of nano titanium dioxide and 60-70 parts of azobisisobutyronitrile;
3) drying to obtain the aluminum foil with the corrosion-resistant layer;
4) coating adhesive on the blank areas on the two side surfaces of the aluminum foil to form an adhesive area with the adhesive; coating a first adhesive on regions adjacent to the corrosion-resistant layer on both sides of the bonding region, wherein the area of the region coated with the first adhesive is 1/3-1/5 of the area of the bonding region, and coating a second adhesive on the rest bonding region between the regions coated with the first adhesive; the first adhesive comprises the following formula components, by mass, 85 parts of carboxyl-terminated butadiene-acrylonitrile rubber, 60 parts of ethylene propylene diene monomer, 25 parts of propylene oxide phenyl ether, 7 parts of chlorosulfonated polyethylene, 15 parts of dihydroamine, 35 parts of cyclohexanone, 2 parts of sulfur and 4 parts of graphite powder; the second adhesive comprises the following formula components, by mass, 50 parts of hydroxymethyl bisphenol A glycidyl ether, 2 parts of polydimethylsiloxane, 35 parts of zinc oxide powder, 5 parts of carbon black, 35 parts of vinyl triamine, 30 parts of H-4 epoxy curing agent and 15 parts of fumed silica;
5) laminating a plurality of aluminum foils obtained in the step 4 along the thickness direction, and overlapping the bonding areas on the opposite surfaces of the adjacent aluminum foils to obtain an aluminum foil laminated body;
6) hot-pressing the laminate to cure the adhesive;
7) forming a plurality of through holes penetrating the aluminum foil laminate in the lamination direction in a region of the laminate not having a projection of the adhesion region in the lamination direction;
8) cutting the laminated body into laminated bodies with a predetermined size along the laminating direction of the laminated body;
9) forming a through groove extending along the stacking direction on a cutting surface, perpendicular to the extending direction of the strip-shaped area, of the stacked body obtained in the step 8;
10) and stretching the laminated body obtained in the step 9 along the laminating direction to obtain the aluminum honeycomb core with the honeycomb structure.
2. The method of claim 1, wherein the corrosion-resistant slurry is prepared from the following formula components in parts by mass: 35 parts of hexafluorobutyl methacrylate, 25 parts of triethylamine, 32 parts of ethylene glycol dimethacrylate, 18 parts of molybdenum disulfide, 18 parts of silicon carbide, 10 parts of boron oxide, 12 parts of calcium carbonate, 8 parts of nano titanium dioxide and 65 parts of azobisisobutyronitrile.
3. A method of making an aluminum honeycomb panel, comprising:
a) the production method according to any one of claims 1 to 2;
b) cutting an aluminum plate into a preset size, arranging a groove on the surface of one side of the aluminum plate, wherein the pattern formed by the groove is the same as the pattern formed by the aluminum foil on the cutting surface with the through groove of the aluminum honeycomb core, and arranging a self-reaction brazing filler metal in the groove;
c) attaching two aluminum plates to the cutting surface of the aluminum honeycomb core, and embedding the aluminum foil on the side of the cutting surface into the groove to obtain a sandwich structure body with the aluminum honeycomb core clamped by the two aluminum plates;
d) and placing the sandwich structure body into a vacuum heating furnace for heating and brazing to obtain the honeycomb plate.
4. The method as claimed in claim 3, wherein the self-reaction solder comprises the following formula components, by mass, 10-20 parts of aluminum trifluoride, 15-30 parts of cesium fluoride, 0.5-1 part of zinc chloride, 0.3-0.5 part of tin chloride, 20-30 parts of aluminum powder, 3-8 parts of zinc powder, 3-5 parts of titanium powder and 3-5 parts of tin powder.
5. The method according to claim 4, wherein the self-reaction solder comprises the following formula components, by mass, 15 parts of aluminum trifluoride, 20 parts of cesium fluoride, 0.8 part of zinc chloride, 0.4 part of tin chloride, 25 parts of aluminum powder, 5 parts of zinc powder, 4 parts of titanium powder and 4 parts of tin powder.
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| CN116160734A (en) * | 2022-08-10 | 2023-05-26 | 强徽新型建材有限公司 | Honeycomb aluminum veneer and forming process thereof |
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