CN113619235B - Fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece and preparation method and application thereof - Google Patents
Fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece and preparation method and application thereof Download PDFInfo
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- CN113619235B CN113619235B CN202110936854.0A CN202110936854A CN113619235B CN 113619235 B CN113619235 B CN 113619235B CN 202110936854 A CN202110936854 A CN 202110936854A CN 113619235 B CN113619235 B CN 113619235B
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/285—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyethers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/685—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks by laminating inserts between two plastic films or plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/70—Completely encapsulating inserts
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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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
- 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
- B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
- B29L2009/003—Layered products comprising a 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/106—Carbon fibres, e.g. graphite fibres
Abstract
The invention provides a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece and a preparation method and application thereof, belonging to the technical field of connection of thermoplastic composite materials and metals. The invention provides a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises a fiber reinforced thermoplastic resin matrix composite and a metal sheet; the metal sheet part is partially embedded in the fiber reinforced thermoplastic resin based composite material. The fiber reinforced thermoplastic resin matrix composite material-metal sheet connecting piece has a sandwich structure, the hot-pressing integral forming preparation method provided by the invention has no damage to materials, and the metal sheet is naturally and uniformly impregnated with resin, so that the interface bonding strength between the metal sheet and the fiber reinforced thermoplastic resin matrix composite material is further improved. The invention integrally forms the fiber reinforced thermoplastic resin matrix composite material and the metal sheet, has simple operation, short processing period and high production efficiency and is suitable for batch production.
Description
Technical Field
The invention relates to the technical field of connection of thermoplastic composite materials and metals, in particular to a fiber reinforced thermoplastic resin matrix composite material-metal sheet connecting piece and a preparation method and application thereof.
Background
The thermoplastic composite material has the advantages of excellent toughness, impact resistance and damage tolerance, remoldability and reprocessing, long storage time of the prepreg and the like, and is gradually and widely used in the fields of aerospace, rail transit, medical instruments and the like. However, thermoplastic composites have difficulties in application processes involving connection problems with conventional metallic materials.
At present, most of connection methods between thermoplastic composite materials and metals adopt laser, ultrasonic and other welding methods, however, the interface bonding strength of the connecting piece obtained by the welding method is low, and the use of the thermoplastic composite materials is limited.
Disclosure of Invention
In view of the above, the invention aims to provide a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
The invention provides a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises a fiber reinforced thermoplastic resin matrix composite and a metal sheet; the metal sheet part is partially embedded in the fiber reinforced thermoplastic resin-based composite material.
Preferably, the fiber in the fiber reinforced thermoplastic resin matrix composite material comprises one or more of glass fiber, carbon fiber and polyimide fiber;
the resin in the fiber reinforced thermoplastic resin matrix composite material comprises one or more of polyether-ether-ketone, polyarylether ketone, polyether ketone, polyphenylene sulfide, polyetherimide and polycarbonate.
Preferably, the metal sheet is made of one or more alloys of aluminum, magnesium, titanium, copper, zinc, lead, tin and stainless steel.
Preferably, the length of the metal sheet is 50-80% of the length of the fiber reinforced thermoplastic resin-based composite material-metal sheet connecting piece.
Preferably, the embedded part of the metal sheet accounts for 10-80% of the length of the metal sheet.
The invention also provides a preparation method of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises the following steps:
Welding the hollow preformed body layer and the first preformed body layer, laying a metal sheet at the hollow part of the hollow preformed body layer, and then welding the hollow preformed body layer and the second preformed body layer to obtain a composite material embedded metal sheet preformed plate;
cutting the composite material embedded metal sheet preformed plate after hot pressing to obtain a preformed piece;
polishing the preformed piece to obtain a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece;
the first preforming body layer, the hollow preforming body layer and the second preforming body layer are made of fiber reinforced thermoplastic resin matrix composite materials.
Preferably, the thickness of the metal sheet is the same as that of the hollow preformed body layer.
Preferably, the hot pressing temperature is 250-450 ℃, the pressure is 1-5 MPa, and the heat preservation time is 10-30 min.
Preferably, the step of maintaining pressure and reducing temperature is further included after the hot pressing;
the cooling rate of the pressure maintaining and cooling is 20-40 ℃/min, the pressure is 1-5 MPa, and the temperature after the pressure maintaining and cooling is lower than the glass transition temperature of the resin in the fiber reinforced thermoplastic resin matrix composite material.
The invention provides a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises a fiber reinforced thermoplastic resin matrix composite and a metal sheet; the metal sheet part is partially embedded in the fiber reinforced thermoplastic resin based composite material. The fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece provided by the invention has a sandwich structure, the fiber reinforced thermoplastic resin matrix composite is connected with a metal sheet, and the interface bonding strength is high.
The invention provides a preparation method of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece in the technical scheme. Compared with the traditional laser welding or ultrasonic welding process of the fiber reinforced thermoplastic resin matrix composite material and metal, the hot-pressing integrated forming preparation method provided by the invention has no damage to the material, and the interface between the metal sheet and the fiber reinforced thermoplastic resin matrix composite material is further improved by naturally and uniformly impregnating the metal sheet with resin. The invention integrally forms the fiber reinforced thermoplastic resin matrix composite material and the metal sheet, has simple operation, short processing period and high production efficiency and is suitable for batch production.
Drawings
FIG. 1 is a schematic structural view of a fiber reinforced thermoplastic resin-based composite material-metal sheet connecting piece, wherein 1 is a fiber reinforced thermoplastic resin-based composite material, and 2 is a metal sheet;
FIG. 2 is a schematic structural diagram of a first pre-forming body layer, a hollow pre-forming body layer and a second pre-forming body layer, wherein 3 is the first pre-forming body layer, 4 is the second pre-forming body layer, 5 is the hollow pre-forming body layer, and 6 is a hollow part in the hollow pre-forming body layer;
FIG. 3 is a schematic diagram of a structure of a composite material embedded metal sheet preformed plate, wherein 2 is a metal sheet;
fig. 4 is a schematic diagram of a preform structure, where 2 is a metal sheet, 3 is a first preform layer, and 4 is a second preform layer.
Detailed Description
The invention provides a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises a fiber reinforced thermoplastic resin matrix composite and a metal sheet; the metal sheet part is partially embedded in the fiber reinforced thermoplastic resin-based composite material.
In the invention, a schematic structural diagram of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece is shown in fig. 1, wherein 1 is a fiber reinforced thermoplastic resin matrix composite, and 2 is a metal sheet.
In the invention, the fibers in the fiber reinforced thermoplastic resin matrix composite material preferably comprise one or more of glass fibers, carbon fibers and polyimide fibers, and the mass fraction of the fibers in the fiber reinforced thermoplastic resin matrix composite material is preferably 30-50%, and more preferably 35-40%; the resin in the fiber reinforced thermoplastic resin matrix composite material preferably comprises one or more of polyether ether ketone (PEEK), Polyaryletherketone (PAEK), Polyetherketoneketone (PEKK), polyphenylene sulfide (PPS), Polyetherimide (PEI) and Polycarbonate (PC), and specifically, the fiber reinforced thermoplastic resin matrix composite material preferably comprises glass fiber reinforced polyether ether ketone based composite material, glass fiber reinforced polyaryletherketone based composite material, glass fiber reinforced polyether ketone based composite material, glass fiber reinforced polyphenylene sulfide based composite material, glass fiber reinforced polyetherimide based composite material, glass fiber reinforced polycarbonate based composite material, carbon fiber reinforced polyether ether ketone based composite material, carbon fiber reinforced polyaryletherketone based composite material, carbon fiber reinforced polyphenylene sulfide based composite material, carbon fiber reinforced polyether ketone based composite material, polycarbonate based composite material, polyether ketone based composite material, and polycarbonate based composite material, Carbon fiber reinforced polyetherimide based composite material, carbon fiber reinforced polycarbonate based composite material, polyimide fiber reinforced polyether-ether-ketone based composite material, polyimide fiber reinforced polyarylether ketone based composite material, polyimide fiber reinforced polyether ketone based composite material, polyimide fiber reinforced polyphenylene sulfide based composite material, polyimide fiber reinforced polyetherimide based composite material or polyimide fiber reinforced polycarbonate based composite material; in the present invention, the fiber reinforced thermoplastic resin based composite material is preferably purchased from Heilongying Innovative materials, Inc.
In the invention, the material of the metal sheet preferably comprises one or more of aluminum, magnesium, titanium, copper, zinc, lead, tin and stainless steel, and more preferably comprises aluminum, magnesium, titanium, copper, zinc, lead, tin, titanium alloy or stainless steel; the thickness of the metal sheet is preferably the same as that of the hollow preformed body layer; the thickness of the metal sheet is not specially limited and can be determined according to actual requirements; in a specific embodiment of the invention, the thickness of the metal sheet is preferably 1-1.5 mm. In the invention, the length of the metal sheet is preferably 50-80%, more preferably 60-70% of the length of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece. In the present invention, the length of the embedded portion of the metal sheet is preferably 10 to 80%, more preferably 30 to 60%, and even more preferably 40 to 50% of the length of the metal sheet.
The thickness of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece is not specially limited and can be determined according to actual needs; specifically, the thickness is 1.5 to 3mm, and more preferably 2 to 2.5 mm.
The invention provides a preparation method of a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece, which comprises the following steps:
Welding the hollow preformed body layer and the first preformed body layer, laying a metal sheet at the hollow part of the hollow preformed body layer, and then welding the hollow preformed body layer and the second preformed body layer to obtain a composite material embedded metal sheet preformed plate;
cutting the preformed plate of the composite material embedded metal sheet after hot pressing to obtain a preformed piece;
polishing the preformed piece to obtain a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece;
the first preforming body layer, the hollow preforming body layer and the second preforming body layer are made of fiber reinforced thermoplastic resin matrix composite materials.
In the present invention, all the raw material components are commercially available products well known to those skilled in the art unless otherwise specified.
The method comprises the steps of welding a hollow preformed body layer and a first preformed body layer, laying a metal sheet at the hollow part of the hollow preformed body layer, and then welding the hollow preformed body layer and a second preformed body layer to obtain the composite material embedded metal sheet preformed plate.
In the present invention, a schematic structural diagram of the first preform body layer, the hollow preform body layer and the second preform body layer is shown in fig. 2, where 3 is the first preform body layer, 4 is the second preform body layer, 5 is the hollow preform body layer, and 6 is a hollow part in the hollow preform body layer.
The schematic structure of the composite material embedded metal sheet preformed plate is shown in fig. 3, wherein 2 is a metal sheet.
In the present invention, the first preform body layer is preferably obtained by layering and welding fiber reinforced thermoplastic resin matrix composite materials. In the invention, the fiber reinforced thermoplastic resin-based composite material is preferably cut to form a plurality of composite material prepregs with the same size in block size before use, and the size of the composite material prepreg is not specially limited and can be determined according to actual needs; in the embodiment of the invention, the size of the composite material prepreg is preferably (300-350) mm x (250-300) mm; the single-layer thickness of the composite prepreg is preferably 0.100-0.150 mm, and more preferably 0.125-0.140 mm. In the invention, the layering mode is preferably 0 degrees, 45 degrees, 0 degrees/90 degrees or quasi-isotropy; the welding method is not particularly limited, and a welding method known to those skilled in the art may be used. In the invention, the number of layers of the composite material prepreg in the first preformed body layer is preferably 4-8.
In the present invention, the method for preparing the second preform layer is preferably the same as the method for preparing the first preform layer, and thus, the description thereof is omitted. In the invention, the number of the composite material prepreg layers in the second preformed body layer is preferably 4-8.
In the present invention, the hollow-out preform layer is preferably obtained by cutting and hollowing out the preform layer, and the preparation method of the preform layer is preferably the same as the preparation method of the first preform layer, and is not described herein again. In the invention, the number of the layers of the composite material prepreg in the hollow preformed body layer is preferably 8-12. The cutting hollowing is not particularly limited, and a hollow part with the same size as the metal sheet can be obtained on the pre-forming body layer. In the invention, the distance between adjacent hollowed-out parts is preferably more than or equal to 5mm, and more preferably 10-15 mm; the distance between the hollow part and the frame of the hollow preformed body layer is preferably more than or equal to 20mm, and more preferably 25-30 mm.
In the invention, the number of layers of the composite material prepreg in the first preformed body layer, the hollow preformed body layer and the second preformed body layer is preferably calculated according to actual needs.
The welding method of the present invention is not particularly limited, and a welding method known to those skilled in the art may be used.
After the composite material embedded metal sheet preformed plate is obtained, the composite material embedded metal sheet preformed plate is cut after being subjected to hot pressing, and the preformed piece is obtained.
In the invention, the hot pressing mode is preferably mould pressing, and the hot pressing temperature is preferably 250-450 ℃, more preferably 300-400 ℃; the pressure of the hot pressing is preferably 1-5 MPa, and more preferably 3-4 MPa; the heat preservation time of the hot pressing is preferably 10-30 min, and more preferably 20 min. Before hot pressing, preferably coating a high-temperature-resistant release agent in an adopted mould and then drying, wherein the high-temperature-resistant release agent preferably comprises an epoxy release agent and/or an ethylene release agent; the epoxy-based mold release agent and/or the ethylene-based mold release agent of the present invention are not particularly limited, and those known to those skilled in the art may be used; the thickness of the high-temperature-resistant release agent is preferably 20-25 mu m; the number of coating times is preferably 3-4; the drying temperature is preferably 100-200 ℃, more preferably 120-150 ℃, and the time is preferably 10-60 min, more preferably 30-40 min; the drying is preferably carried out in a forced air drying cabinet.
After hot pressing, the invention preferably also comprises the steps of carrying out pressure maintaining and cooling on the hot-pressed composite material embedded metal sheet preformed plate to obtain a composite material embedded metal sheet plate; the cooling rate of the pressure maintaining and cooling is preferably 20-40 ℃/min, and more preferably 30 ℃/min; the pressure for pressure maintaining and temperature reduction is preferably 1-5 MPa, and more preferably 3-4 MPa; the temperature after pressure maintaining and temperature reduction is preferably less than the glass transition temperature of the resin in the fiber reinforced thermoplastic resin matrix composite material, and more preferably less than or equal to 100 ℃.
In the present invention, the cutting is preferably performed along the gap of the metal sheet of the composite material embedded metal sheet plate, resulting in several preforms.
In the present invention, the schematic structure of the preform is shown in fig. 4, wherein 2 is a metal sheet, 3 is a first preform layer, and 4 is a second preform layer.
After the preformed piece is obtained, the preformed piece is polished to obtain the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece. The polishing is not particularly limited, and the method can remove part of the first preformed body layer and the second preformed body layer and ensure that the thickness of the polished surface of the metal sheet is not more than 0.1 mm.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Carbon fiber reinforced PEEK resin-based composite material-titanium alloy sheet metal connecting piece
(1) The carbon fiber reinforced PEEK resin-based composite material with the thickness of 0.125mm is cut into 16 composite material prepregs with the block size of 300mm multiplied by 250mm, the composite material prepregs are laid in a +/-45-degree laying mode and then welded to obtain a first preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepregs, a second preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepregs and a formed body layer (with the thickness of 1mm) containing 8 layers of composite material prepregs.
(2) Cutting and hollowing a formed body layer containing 8 layers of composite material prepreg to obtain a hollowed preformed body layer, welding the hollowed preformed body layer and a first preformed body layer, laying a titanium alloy metal sheet at the hollowed part, and welding a second preformed body layer to obtain a composite material embedded metal sheet preformed plate; the size of the hollow part is consistent with the length and the width of the titanium alloy metal sheet, the size (length, width and thickness) of the titanium alloy metal sheet is 50mm, 25mm and 1mm, the interval between every two adjacent hollow parts is 10mm, and the distance between the edge hollow part and the frame of the hollow preformed body layer is 25 mm.
(3) Coating epoxy high-temperature release agent in a mold for 3 times, placing the mold in a blast drying oven at 200 ℃ for drying for 30min, then placing the composite material embedded metal sheet preformed plate in the mold, carrying out heat preservation and hot pressing for 10min under the conditions of 380 ℃ and 2MPa, then cooling to below 100 ℃ at the cooling rate of 30 ℃/min, and then demoulding to obtain the composite material embedded metal sheet plate.
(4) Cutting along the gap of the metal sheet of the composite material embedded metal sheet plate, polishing the obtained pre-connecting piece to obtain the 12-carbon fiber reinforced PEEK resin matrix composite-titanium alloy metal sheet connecting piece, wherein the length of the metal sheet of the embedded part is 10mm, and the bonding strength of the carbon fiber reinforced PEEK resin matrix composite-titanium alloy metal sheet connecting piece is 40 MPa.
Example 2
Glass fiber reinforced PPS resin based composite material-titanium alloy sheet metal connecting piece
(1) A glass fiber reinforced PPS resin-based composite material with the thickness of 0.125mm is cut into composite material prepregs with the size of 28 blocks of 350mm multiplied by 350mm, and the composite material prepregs are laid in a quasi-isotropic layering mode and then welded to obtain a first preformed body layer (with the thickness of 1mm) containing 8 layers of composite material prepregs, a second preformed body layer (with the thickness of 1mm) containing 8 layers of composite material prepregs and a formed body layer (with the thickness of 1.5mm) containing 12 layers of composite material prepregs.
(2) Cutting and hollowing a forming body layer containing 12 layers of composite material prepreg to obtain a hollowed preformed body layer, welding the hollowed preformed body layer and a first preformed body layer, laying a titanium alloy metal sheet at the hollowed part, and welding a second preformed body layer to obtain a composite material embedded metal sheet preformed plate; the size of the hollow part is consistent with the length and the width of the titanium alloy metal sheet, the size (length, width and thickness) of the titanium alloy metal sheet is 60mm, 30mm and 1.5mm, the interval between every two adjacent hollow parts is 20mm, and the distance between the edge hollow part and the frame of the hollow preformed body layer is 35 mm.
(3) Coating epoxy high-temperature release agent in a mold for 3 times, placing the mold in a blast drying oven at 200 ℃ for drying for 30min, then placing the composite material embedded metal sheet preformed plate in the mold, carrying out heat preservation and hot pressing for 20min under the conditions of 330 ℃ and 5MPa, then cooling to below 100 ℃ at the cooling rate of 20 ℃/min, and then demoulding to obtain the composite material embedded metal sheet plate.
(4) Cutting along the gap of the metal sheet of the composite material embedded metal sheet plate, polishing the obtained pre-connecting piece to obtain 12 glass fiber reinforced PPS resin based composite material-titanium alloy metal sheet connecting pieces, wherein the length of the metal sheet of the embedded part is 30mm, and the bonding strength of the glass fiber reinforced PPS resin based composite material-titanium alloy metal sheet connecting pieces is 34 MPa.
Example 3
Polyimide fiber reinforced PEI resin matrix composite-aluminum alloy sheet metal connecting piece
(1) Cutting a polyimide fiber reinforced PEI resin-based composite material with the thickness of 0.125mm into a composite material prepreg with the size of 16 blocks of 350mm multiplied by 350mm, laying according to a quasi-isotropic layering mode, and then welding to obtain a first preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepregs, a second preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepregs and a formed body layer (with the thickness of 1.0mm) containing 8 layers of composite material prepregs.
(2) Cutting and hollowing a formed body layer containing 8 layers of composite material prepreg to obtain a hollowed preformed body layer, welding the hollowed preformed body layer and a first preformed body layer, laying an aluminum alloy metal sheet at the hollowed part, and welding a second preformed body layer to obtain a composite material embedded metal sheet preformed plate; the size of the hollowed-out part is consistent with the length and the width of the aluminum alloy metal sheet, the size (length, width and thickness) of the aluminum alloy metal sheet is 60mm, 30mm and 1.0mm, the interval between every two adjacent hollowed-out parts is 20mm, and the distance between the edge hollowed-out part and the frame of the hollowed-out preformed body layer is 35 mm.
(3) Coating a high-ethylene temperature release agent in a mould for 3 times, placing the mould in a 200 ℃ blast drying oven for drying for 30min, then placing a composite material embedded metal sheet preformed plate in the mould, carrying out heat preservation and hot pressing for 30min under the conditions of 385 ℃ and 5MPa, then cooling to below 100 ℃ at a cooling rate of 20 ℃/min, and then demoulding to obtain the composite material embedded metal sheet plate.
(4) Cutting along the gap of the metal sheet of the composite material embedded metal sheet plate, polishing the obtained pre-connecting piece to obtain 12 polyimide fiber reinforced PEI resin matrix composite-aluminum alloy metal sheet connecting pieces, wherein the length of the embedded metal sheet is 25mm, and the bonding strength of the polyimide fiber reinforced PEI resin matrix composite-aluminum alloy metal sheet connecting pieces is 43 MPa.
Example 4
Carbon fiber reinforced PC resin matrix composite material-magnesium alloy sheet metal connecting piece
(1) The carbon fiber reinforced PC resin-based composite material with the thickness of 0.125mm is cut into 16 pieces of composite material prepreg with the size of 300mm multiplied by 250mm, and the composite material prepreg is laid in a quasi-anisotropic layering mode and then welded to obtain a first preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepreg, a second preformed body layer (with the thickness of 0.5mm) containing 4 layers of composite material prepreg and a formed body layer (with the thickness of 1mm) containing 8 layers of composite material prepreg.
(2) Cutting and hollowing a formed body layer containing 8 layers of composite material prepreg to obtain a hollowed preformed body layer, welding the hollowed preformed body layer and a first preformed body layer, laying a magnesium alloy metal sheet at the hollowed part, and welding a second preformed body layer to obtain a composite material embedded metal sheet preformed plate; the size of the hollow part is consistent with the length and the width of the titanium alloy metal sheet, the size (length, width and thickness) of the magnesium alloy metal sheet is 50mm, 25mm and 1mm, the interval between every two adjacent hollow parts is 10mm, and the distance between the edge hollow part and the frame of the hollow preformed body layer is 25 mm.
(3) Coating an epoxy high-temperature release agent in a mould for 3 times, placing the mould in a 200 ℃ blast drying oven for drying for 30min, then placing a composite material embedded metal sheet preformed plate in the mould, carrying out heat preservation and hot pressing for 10min under the conditions of 260 ℃ and 3MPa, then cooling to below 100 ℃ at a cooling rate of 20 ℃/min, and then demoulding to obtain the composite material embedded metal sheet plate.
(4) Cutting and polishing along the gap of the metal sheet of the composite material embedded metal sheet plate to obtain the 12-carbon fiber reinforced PC resin matrix composite-magnesium alloy metal sheet connecting piece, wherein the length of the embedded metal sheet is 15mm, and the bonding strength of the carbon fiber reinforced PC resin matrix composite-magnesium alloy metal sheet connecting piece is 32 MPa.
Example 5
Carbon fiber reinforced PAEK resin matrix composite material-titanium alloy sheet metal connecting piece
(1) The carbon fiber reinforced PAEK resin-based composite material with the thickness of 0.125mm is cut into 24 pieces of composite material prepreg with the size of 350mm multiplied by 350mm, and the composite material prepreg is laid in an 0/90-degree laying mode and then welded to obtain a first preformed body layer (with the thickness of 1mm) containing 8 layers of composite material prepreg, a second preformed body layer (with the thickness of 1mm) containing 8 layers of composite material prepreg and a formed body layer (with the thickness of 1mm) containing 8 layers of composite material prepreg.
(2) Cutting and hollowing a formed body layer containing 8 layers of composite material prepreg to obtain a hollowed preformed body layer, welding the hollowed preformed body layer and a first preformed body layer, laying a titanium alloy metal sheet at the hollowed part, and welding a second preformed body layer to obtain a composite material embedded metal sheet preformed plate; the size of the hollow part is consistent with the length and the width of the titanium alloy metal sheet, the size (length, width and thickness) of the titanium alloy metal sheet is 60mm, 30mm and 1.5mm, the interval between every two adjacent hollow parts is 20mm, and the distance between the edge hollow part and the frame of the hollow preformed body layer is 35 mm.
(3) Coating a high-ethylene temperature release agent in a mould for 3 times, placing the mould in a 200 ℃ blast drying oven for drying for 30min, then placing a composite material embedded metal sheet preformed plate in the mould, carrying out heat preservation and hot pressing for 20min under the conditions of 360 ℃ and 3MPa, then cooling to below 100 ℃ at a cooling rate of 20 ℃/min, and then demoulding to obtain the composite material embedded metal sheet plate.
(4) Cutting along the gap of the metal sheet plate embedded with the composite material, and polishing the obtained pre-connecting piece to obtain the 12-carbon fiber reinforced PAEK resin matrix composite-titanium alloy metal sheet connecting piece, wherein the length of the metal sheet of the embedded part is 20mm, and the bonding strength of the carbon fiber reinforced PAEK resin matrix composite-titanium alloy metal sheet connecting piece is 41 MPa.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (9)
1. A fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece is characterized by comprising a fiber reinforced thermoplastic resin matrix composite and a metal sheet; the metal sheet part is partially embedded in the fiber reinforced thermoplastic resin matrix composite material;
The preparation method of the fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece comprises the following steps:
welding the hollow preformed body layer and the first preformed body layer, laying a metal sheet at the hollow part of the hollow preformed body layer, and then welding the hollow preformed body layer and the second preformed body layer to obtain a composite material embedded metal sheet preformed plate;
cutting the composite material embedded metal sheet preformed plate after hot pressing to obtain a preformed piece;
polishing the preformed piece to obtain a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece;
the first preforming body layer, the hollow preforming body layer and the second preforming body layer are made of fiber reinforced thermoplastic resin matrix composite materials.
2. The fiber reinforced thermoplastic resin based composite-to-sheet metal connection as claimed in claim 1, wherein the fibers in the fiber reinforced thermoplastic resin based composite comprise one or more of glass fibers, carbon fibers and polyimide fibers;
the resin in the fiber reinforced thermoplastic resin matrix composite material comprises one or more of polyether-ether-ketone, polyarylether ketone, polyether ketone, polyphenylene sulfide, polyetherimide and polycarbonate.
3. The fiber reinforced thermoplastic resin based composite-to-sheet metal connection piece of claim 1, wherein the sheet metal comprises one or more alloys of aluminum, magnesium, titanium, copper, zinc, lead, tin and stainless steel.
4. The fiber reinforced thermoplastic resin based composite-sheet metal connection piece according to claim 1 or 3, wherein the length of the metal sheet is 50 to 80% of the length of the fiber reinforced thermoplastic resin based composite-sheet metal connection piece.
5. The fiber reinforced thermoplastic resin based composite-to-metal sheet connecting member as claimed in claim 1 or 3, wherein the length of the embedded portion of the metal sheet is 10 to 80% of the length of the metal sheet.
6. The method for preparing a fiber reinforced thermoplastic resin-based composite material-metal sheet connecting piece according to any one of claims 1 to 5, comprising the following steps:
welding the hollow preformed body layer and the first preformed body layer, laying a metal sheet at the hollow part of the hollow preformed body layer, and then welding the hollow preformed body layer and the second preformed body layer to obtain a composite material embedded metal sheet preformed plate;
Cutting the composite material embedded metal sheet preformed plate after hot pressing to obtain a preformed piece;
polishing the preformed piece to obtain a fiber reinforced thermoplastic resin matrix composite-metal sheet connecting piece;
the first preforming body layer, the hollow preforming body layer and the second preforming body layer are made of fiber reinforced thermoplastic resin matrix composite materials.
7. The method for preparing the hollow preform body layer, wherein the thickness of the metal sheet is the same as that of the hollow preform body layer.
8. The preparation method according to claim 6, wherein the hot pressing temperature is 250-450 ℃, the pressure is 1-5 MPa, and the holding time is 10-30 min.
9. The preparation method according to claim 6, characterized by further comprising maintaining pressure and reducing temperature after the hot pressing;
the cooling rate of the pressure maintaining and cooling is 20-40 ℃/min, the pressure is 1-5 MPa, and the temperature after the pressure maintaining and cooling is lower than the glass transition temperature of the resin in the fiber reinforced thermoplastic resin matrix composite material.
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| EP2633979A1 (en) * | 2012-02-28 | 2013-09-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Semi-finished product for the production of a fiber composite metal hybrid laminate and method for producing such a semi-finished product |
| CN106584925A (en) * | 2016-11-29 | 2017-04-26 | 上海晋飞碳纤科技股份有限公司 | Integrally-formed, flame-retardant and high-strength roof board of high-speed railway carriage and forming process of roof |
| CN107283871A (en) * | 2017-08-24 | 2017-10-24 | 哈尔滨工业大学 | A kind of preparation method of thermoplastic resin matrix's carbon fiber titanium/titanium alloy layer plywood |
| CN108819286A (en) * | 2018-04-25 | 2018-11-16 | 成都飞机工业（集团）有限责任公司 | A kind of embedded copper band and material prepreg are total to adhering method |
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| CA2803414C (en) * | 2010-07-02 | 2018-09-04 | Hexcel Holding Gmbh | Fibre reinforced composite moulding |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2633979A1 (en) * | 2012-02-28 | 2013-09-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Semi-finished product for the production of a fiber composite metal hybrid laminate and method for producing such a semi-finished product |
| CN106584925A (en) * | 2016-11-29 | 2017-04-26 | 上海晋飞碳纤科技股份有限公司 | Integrally-formed, flame-retardant and high-strength roof board of high-speed railway carriage and forming process of roof |
| CN107283871A (en) * | 2017-08-24 | 2017-10-24 | 哈尔滨工业大学 | A kind of preparation method of thermoplastic resin matrix's carbon fiber titanium/titanium alloy layer plywood |
| CN108819286A (en) * | 2018-04-25 | 2018-11-16 | 成都飞机工业（集团）有限责任公司 | A kind of embedded copper band and material prepreg are total to adhering method |
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