CN109291575B - Surface protection type conductive composite material and preparation method thereof - Google Patents

Surface protection type conductive composite material and preparation method thereof Download PDF

Info

Publication number
CN109291575B
CN109291575B CN201810963790.1A CN201810963790A CN109291575B CN 109291575 B CN109291575 B CN 109291575B CN 201810963790 A CN201810963790 A CN 201810963790A CN 109291575 B CN109291575 B CN 109291575B
Authority
CN
China
Prior art keywords
resin
layer
composite material
rubber
conductive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810963790.1A
Other languages
Chinese (zh)
Other versions
CN109291575A (en
Inventor
董慧民
史海燕
李跃腾
钱黄海
程丽君
苏正涛
刘嘉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AECC Beijing Institute of Aeronautical Materials
Original Assignee
AECC Beijing Institute of Aeronautical Materials
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AECC Beijing Institute of Aeronautical Materials filed Critical AECC Beijing Institute of Aeronautical Materials
Priority to CN201810963790.1A priority Critical patent/CN109291575B/en
Publication of CN109291575A publication Critical patent/CN109291575A/en
Application granted granted Critical
Publication of CN109291575B publication Critical patent/CN109291575B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/02—Layer formed of wires, e.g. mesh
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/063—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of rubber
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
    • 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
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • 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
    • 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
    • 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
    • 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
    • B32B27/281—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 polyimides
    • 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
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • 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
    • B32B27/42—Layered products comprising a layer of synthetic resin comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/043—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2262/0261—Polyamide fibres
    • 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
    • B32B2262/0276—Polyester fibres
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • 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
    • 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
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/552—Fatigue strength
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a surface protection type conductive composite material and a preparation method thereof. The adhesive layer is an inorganic or organic adhesive; the conducting layer is a pure conducting metal net or a high molecular resin conducting adhesive film or a high molecular resin insulating adhesive film/conducting metal net composite adhesive film or a high molecular resin conducting adhesive film/conducting metal net composite adhesive film; the reinforced layer is made of fabric; the protective layer is made of rubber materials. Before preparation, the prepreg, the adhesive layer, the conducting layer, the reinforcing layer and the protective layer are cut layer by layer according to the shape and the size of a composite material workpiece, then the conducting layer and the resin-based composite material are integrally cured and molded, then the resin-based composite material, the adhesive layer, the reinforcing layer and the protective layer are manufactured into a blank, and finally compression molding is carried out.

Description

Surface protection type conductive composite material and preparation method thereof
Technical Field
The invention relates to a surface protection type conductive composite material and a preparation method thereof, belonging to the technical field of conductive composite materials.
Background
The fiber reinforced resin matrix composite material has the characteristics of strong designability, high specific strength, corrosion resistance, good structural dimensional stability, good fatigue fracture resistance and the like, is widely applied to the fields of aviation and aerospace, has been rapidly developed into an important structural material of aircrafts such as airplanes and the like, and the using amount of the fiber reinforced resin matrix composite material becomes one of important marks of the advancement of airplanes. However, compared with the conventional metal material, although the carbon fiber in the composite material has better conductivity, the insulating resin obstructs the conductive path; when the airplane is struck by lightning, the lightning current is difficult to be led out through the surface of the material to generate a large amount of heat, and as a result, the composite material is ablated, so that the strength and the rigidity of the composite material are greatly reduced, and great challenge is brought to the safety and the economy of the airplane structure.
At present, the lightning protection and electromagnetic shielding application effects of composite materials are improved, and the electrical conductivity of a composite structure is enhanced by different methods. Such methods include lightning rod in whole or in segments, arc or flame spraying metal, wire mesh, solid/expanded foil, perforated foil wrapping, surface spraying conductive paint containing conductive particles, and the like. For example, the lightning protection measure of the composite fuselage structure of the boeing 787 aircraft is to add a metal mesh in the manufacturing process of the composite fuselage to lead away lightning current. However, the high-density metal material is directly exposed to the environment and is easy to corrode, so that a gap is easy to appear on the surface between the high-density metal material and the composite material, an electric arc and a spark are generated when lightning strike current passes through the high-density metal material, and even an oil tank in a structure can be ignited to cause aircraft explosion in severe cases; surface protection of the conductive metal material is therefore required. In addition, the mesh foil coated composite material may be damaged by hail, broken stones flying on an airstrip, tools inadvertently dropped by maintenance personnel, rough treading and the like in the service process, as a result, the continuity of the circuit in the metal mesh is damaged, and even the internal composite material may be damaged, thereby affecting the service performance.
Disclosure of Invention
The invention provides a surface protection type conductive composite material and a preparation method thereof aiming at overcoming the defects in the prior art, and aims to improve the sealing protection and damage resistance of the conductive composite material.
The purpose of the invention is realized by the following technical scheme:
the technical scheme of the invention provides a surface protection type conductive composite material, which is characterized in that: the base material (1) of the composite material is a fiber reinforced resin matrix composite material, and the conductive layer (2), the adhesive layer (3) and the protective layer (5) are sequentially prepared on the surface of the base material (1), wherein:
the conducting layer (2) is a pure conducting metal net, a high molecular resin conducting adhesive film, a high molecular resin insulating adhesive film/conducting metal net composite adhesive film or a high molecular resin conducting adhesive film/conducting metal net composite adhesive film;
the adhesive layer (3) is an inorganic or organic adhesive, the adhesive can be synchronously cured with rubber, and can generate good bonding effect with polymer resin, rubber and fabric, and the peel strength is more than 0.1kN/m by taking 180 degrees as an example;
the protective layer (5) is made of natural rubber, synthetic rubber or a mixed rubber of the natural rubber and the synthetic rubber.
Furthermore, a reinforcing layer (4) is added between the adhesive layer (3) and the protective layer (5) or on the protective layer (5), wherein the reinforcing layer (4) is one or more of polyester fabric, aramid fabric, nylon fabric, polyester fabric, glass cloth, cotton cloth or carbon fiber cloth;
if the outermost layer is the protective layer (5), the reinforced layer (4) is paved on the outermost layer or the reinforced layer (4) and the protective layer (5) are paved alternately, and if the outermost layer is the reinforced layer (4), the protective layer (5) is paved on the outermost layer or the protective layer (5) and the reinforced layer (4) are paved alternately;
the fiber reinforced resin matrix composite material is characterized in that the reinforcing fiber used by the fiber reinforced resin matrix composite material is one or more of carbon fiber, glass fiber, aramid fiber, basalt fiber, alumina fiber or silicon carbide fiber, and the structural form of the reinforcing fiber is fabric or a unidirectional tape.
The matrix resin used by the fiber reinforced resin matrix composite material is thermoplastic resin or thermosetting resin, wherein:
the thermoplastic resin is one or more of mixed resin of polyether ketone, polysulfone, polyether sulfone, thermoplastic polyimide, polyether imide, polycarbonate, polyphenyl ether or polyamide;
the thermosetting resin is one or a mixture of epoxy resin, bismaleimide resin, thermosetting polyimide resin, polybenzoxazine resin, phenolic resin, cyanate resin or unsaturated polyester resin.
The synthetic rubber is one or a mixture of more of styrene butadiene rubber, chloroprene rubber, ethylene propylene rubber, nitrile rubber, hydrogenated nitrile rubber, butyl rubber, epichlorohydrin rubber, polysulfide rubber, fluorosilicone rubber, silicone rubber or fluororubber.
The resin in the high polymer resin conductive adhesive film is one or a mixture of epoxy resin, bismaleimide resin, thermosetting polyimide resin, polybenzoxazine resin, phenolic resin, cyanate resin and unsaturated polyester resin;
the conductive particles used in the polymer resin conductive adhesive film are one or a mixture of more of carbon nano tubes, graphene, carbon black, graphite, silver powder, nickel powder, aluminum powder, iron powder, copper powder and gold powder.
The pure conductive metal net is one or a mixture of a copper net and an aluminum foil net.
The technical scheme of the invention also provides a method for preparing the surface protection type conductive composite material, which comprises the following steps:
step one, preparation of prefabricated part of conductive composite material
Paving the material of the conductive layer 2 on one side or two sides of a prepreg blank of the fiber reinforced resin matrix composite material, and then curing by adopting a molding process to obtain a prefabricated part;
step two, pretreatment of the prefabricated member
Pretreating the surface of the prefabricated member by sand blasting or grinding, cleaning, and spraying, brushing or paving an adhesive layer 3 on one side or two sides of the prefabricated member;
step three, preparation of surface protection type conductive composite material
And (3) paving the protective layer 5 on the adhesive layer 3, and performing compression molding after paving to obtain the surface protection type conductive composite material.
Further, the curing method of the preform in the first step is an autoclave, an RTM, a vacuum bag method, a liquid forming process or a resin film impregnation process.
Further, the surface protection type conductive composite material has a flat plate or curved surface shape.
Further, the curing degree of the preform in the first step is more than 30%.
The invention has the advantages and beneficial effects that:
the rubber is used as the surface protective layer of the conductive layer, and the conductive layer has the advantages of adjustable thickness and designable performance, so that the conductive layer is effectively isolated from the external environment, and the environmental corrosion of conductive particles or metal nets in the conductive layer is avoided; in addition, the composite material can play a role in cladding, vibration damping, buffering and protecting, and the impact resistance and damage tolerance of the composite material are greatly improved. In addition, when the structure prepared by the invention is pneumatically heated, the outer rubber layer can also play a thermal protection role, so that the composite material is prevented from being damaged by thermal shock.
According to the invention, the base material and the conductive layer of the resin-based composite material and the structure integrated preparation technology of the protective layer made of rubber are adopted, so that the process is convenient, and the complicated secondary spraying protection process of the conventional conductive composite material is effectively avoided; in addition, the chemical adhesive layer is introduced between the conductive layer and the protective layer, so that the defect of insufficient interface adhesion between the conventional conductive composite material and the surface coating is greatly overcome, the service life of the protective layer is prolonged, and the service life of the protective layer can reach the same as that of the conductive composite material.
The obtained composite material has the advantages of high rigidity, high strength, resistance to damp and heat environments, fatigue resistance, impact resistance, damping and shock absorption. Moreover, the design of the conductive characteristic of the composite material can be realized by controlling the paving position and the thickness of the conductive layer, the lightning protection and electromagnetic shielding requirements of different parts of the aircraft are met, and the composite material is particularly suitable for being applied to the field of aerospace.
Drawings
FIG. 1 is a schematic view of a mat according to an embodiment of the present invention;
FIG. 2 is a schematic view of a second layer of an embodiment of the present invention;
FIG. 3 is a schematic view of a triple-layered layer according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a quad-ply embodiment of the present invention;
Detailed Description
The following examples are intended to illustrate the present invention specifically, but the present invention is not limited thereto, and those skilled in the art can make various changes or modifications within the scope of the claims without affecting the essence of the present invention.
Example one
Referring to the attached figure 1, the surface protection type conductive composite material plane plate is produced: the length is 660mm +/-5 mm, the width is 120mm +/-5 mm, the thickness is 3.5mm +/-0.2 mm, and the steps are as follows:
(1) firstly, paving and pasting a T700S/5228 high-temperature epoxy resin matrix composite prepreg blank with the thickness of 3mm +/-0.2 mm, wherein the size is 670mm in length and 130mm in width, then paving and pasting a high-molecular conductive resin film with the thickness of 0.2mm +/-0.04 mm on one side surface of the prepreg as a conductive layer 2, and then precuring for 30min at 150 ℃ to obtain a conductive composite prefabricated part;
(2) cutting the prefabricated part 1 to be 660mm in length and 120mm in width, polishing the surface of one side of the prefabricated part paved with the conducting layer, cleaning the prefabricated part by using acetone, and then uniformly spraying a high-molecular adhesive glue solution on the surface to serve as an adhesive layer 3, wherein the thickness of the adhesive is 0.02 mm-0.04 mm;
(3) high-damping styrene butadiene rubber is paved and adhered on the adhesive layer 3 to serve as a protective layer 5, the thickness is 0.5mm +/-0.1 mm, and the cutting size is 660mm in length and 120mm in width.
And (3) carrying out compression molding on the blank formed by the layering at the temperature of 180 +/-5 ℃ and × (10MPa +/-2 MPa) × (150min +/-5 min), taking out the mold and trimming to obtain the composite board, wherein nondestructive testing proves that no obvious defect interface exists in the composite board.
Example two
Referring to the attached figure 2, the surface protection type conductive composite material curved plate is produced: the length is 660mm +/-2 mm, the width is 120mm +/-2 mm, the thickness is 4.5mm +/-0.2 mm, and the steps are as follows:
(1) firstly, paving and pasting SW 280/benzoxazine resin prepreg fabric blanks with the thickness of 3mm +/-0.2 mm, wherein the size is 670mm in length and 130mm in width, then paving and pasting high-molecular conductive resin films with the thickness of 0.2mm +/-0.04 mm on the two side surfaces of the prepreg as conductive layers 2, and then precuring for 30min at 150 ℃ to obtain a conductive composite prefabricated part;
(2) cutting the prefabricated part 1 to be 660mm in length and 120mm in width, polishing the surfaces of the two sides of the prefabricated part, cleaning the prefabricated part by using acetone, and then uniformly spraying a high-molecular adhesive glue solution on the surface to serve as an adhesive layer 3, wherein the thickness of the adhesive is 0.02 mm-0.04 mm;
(3) paving and pasting a high molecular polyester fabric as a reinforcing layer 4 on the adhesive layer 3 on one side of the conductive composite material prefabricated part, wherein the thickness is 0.3mm +/-0.05 mm, and the cutting size is 660mm in length and 120mm in width; paving high-damping hydrogenated nitrile rubber on the reinforcing layer 4 to serve as a protective layer 5, wherein the thickness of the protective layer is 0.5mm +/-0.05 mm, and the cutting size of the protective layer is the same as that of the reinforcing layer 4;
(4) on the other side of the conductive composite material prefabricated part, high-damping nitrile rubber is paved and adhered on the adhesive layer 3 to serve as a protective layer 5, the thickness is 0.5mm +/-0.05 mm, and the cutting size is 660mm in length and 120mm in width.
And (3) carrying out compression molding on the blank formed by the layering according to (185 +/-5 ℃) × (10MPa +/-2 MPa) × (180min +/-5 min), taking the mold, and trimming to obtain the composite board, wherein nondestructive testing proves that no obvious defect interface exists in the composite board.
EXAMPLE III
Referring to the attached figure 3, the surface protection type conductive composite material plane plate is produced: the length is 1200mm +/-2 mm, the width is 200mm +/-2 mm, the thickness is 3.3mm +/-0.2 mm, and the steps are as follows:
(1) firstly, laying and pasting DP328/3233 aramid fiber prepreg fabric blanks with the thickness of 3mm +/-0.2 mm, wherein the size is 1210mm in length and 210mm in width, then laying and pasting pure metal aluminum foil conductive nets with the thickness of 0.05 mm-0.08 mm on the two side surfaces of the prepreg as conductive layers 2, and then precuring for 20min at 125 ℃ to obtain a conductive composite material prefabricated part;
(2) cutting the prefabricated part into pieces with the length of 1200mm and the width of 200mm, polishing the surface of one side of the prefabricated part, cleaning the prefabricated part by using acetone, and then uniformly spraying a high-molecular adhesive glue solution on the surface to serve as an adhesive layer 3, wherein the thickness of the adhesive is 0.02-0.04 mm;
(3) high-damping ethylene propylene rubber is paved and pasted on the adhesive layer 3 to serve as a protective layer 5, the thickness is 0.3mm +/-0.05 mm, and the cutting size is 1200mm in length and 200mm in width. And a high-molecular polyester fabric is laid on the protective layer 5 to serve as a reinforcing layer 4, the thickness of the reinforcing layer is 0.15mm +/-0.05 mm, and the cutting size of the reinforcing layer is the same as that of the protective layer 5.
And (3) performing compression molding on the blank formed by the layering at 160 +/-5 ℃ under × (10MPa +/-2 MPa) × (60min +/-3 min), taking out the mold, and trimming to obtain the composite board, wherein nondestructive testing proves that no obvious defect interface exists in the composite board.
Example four
Referring to the attached figure 4, the curved plate made of the surface protection type conductive composite material is produced: the length is 1200mm +/-2 mm, the width is 200mm +/-2 mm, the thickness is 3.6mm +/-0.3 mm, and the steps are as follows:
(1) firstly, paving a carbon fiber preform with the thickness of 3mm +/-0.2 mm in a mould, wherein the size is 1210mm in length and 210mm in width; then, a pure metal copper conductive net with the thickness of 0.05 mm-0.08 mm is used as a conductive layer 2 and is paved on the surface of one side of the carbon fiber preformed body; then, mixing epoxy resin and curing agent triethylene tetramine according to the proportion of 100: 13, stirring uniformly, and injecting into a mold by an RTM process, wherein the injection pressure is 0.15 MPa. After the injection is finished, carrying out curing operation according to a curing gradient of 130 ℃/3h +150 ℃/2h +170 ℃/2h +180 ℃/2h +200 ℃/2h to prepare a conductive composite prefabricated part;
(2) cutting the prefabricated part into pieces with the length of 1200mm and the width of 200mm, polishing the surface of the prefabricated part with the conductive layer, cleaning the prefabricated part with acetone, and then uniformly spraying a high-molecular adhesive glue solution on the surface to serve as an adhesive layer 3, wherein the thickness of the adhesive is 0.02-0.04 mm;
(3) high-damping nitrile rubber is paved and adhered on the adhesive layer 3 to serve as a protective layer 5, the thickness is 0.2mm +/-0.05 mm, and the cutting size is 1200mm in length and 200mm in width. And a high-molecular polyester fabric is laid on the protective layer 5 to serve as a reinforcing layer 4, the thickness of the reinforcing layer is 0.3mm +/-0.05 mm, and the cutting size of the reinforcing layer is the same as that of the protective layer 5. High-damping nitrile rubber is paved on the reinforced layer 4 to serve as a protective layer 5, the thickness is 0.3mm +/-0.05 mm, and the cutting size of the protective layer is the same as that of the reinforced layer 4.
And (3) performing compression molding on the blank formed by the layering at 160 +/-5 ℃ under × (10MPa +/-2 MPa) × (30min +/-5 min), taking out the mold, and trimming to obtain the composite board, wherein nondestructive testing proves that no obvious defect interface exists in the composite board.
Compared with the prior art, the forming method is simple and easy to implement, the electrical property of the obtained conductive composite material can be designed, the conductive composite material has high rigidity, high strength, humidity and heat resistant environment and fatigue resistance, the corrosion problem of a metal conductive layer is avoided, and meanwhile, the conductive composite material has the advantages of thermal protection, impact resistance, damping and shock absorption, can meet the requirements of lightning stroke protection and electromagnetic shielding of different parts of an aircraft, and is particularly suitable for being applied to the field of aerospace.

Claims (9)

1. A surface protection type conductive composite material is characterized in that: the base material (1) of the composite material is a fiber reinforced resin matrix composite material, and the conductive layer (2), the adhesive layer (3) and the protective layer (5) are sequentially prepared on the surface of the base material (1), wherein:
the conducting layer (2) is a pure conducting metal net, a high molecular resin conducting adhesive film, a high molecular resin insulating adhesive film/conducting metal net composite adhesive film or a high molecular resin conducting adhesive film/conducting metal net composite adhesive film;
the adhesive layer (3) is an inorganic or organic adhesive;
the protective layer (5) is made of natural rubber, synthetic rubber or a mixed rubber of the natural rubber and the synthetic rubber;
a reinforcing layer (4) is added between the adhesive layer (3) and the protective layer (5) or on the protective layer (5), and the reinforcing layer (4) is one or more of aramid fabric, nylon fabric, polyester fabric, glass cloth, cotton cloth or carbon fiber cloth;
if the outermost layer is the protective layer (5), the reinforced layer (4) or the reinforced layer (4) and the protective layer (5) are paved on the outermost layer, and if the outermost layer is the reinforced layer (4), the protective layer (5) or the reinforced layer (5) and the reinforced layer (4) are paved on the outermost layer.
2. The surface-protected conductive composite of claim 1, wherein: the fiber reinforced resin matrix composite material is characterized in that the reinforcing fiber used by the fiber reinforced resin matrix composite material is one or more of carbon fiber, glass fiber, aramid fiber, basalt fiber, alumina fiber or silicon carbide fiber, and the structural form of the reinforcing fiber is fabric or a unidirectional tape.
3. The surface-protected conductive composite of claim 1, wherein: the matrix resin used by the fiber reinforced resin matrix composite material is thermoplastic resin or thermosetting resin, wherein:
the thermoplastic resin is one or more of mixed resin of polyether ketone, polysulfone, polyether sulfone, thermoplastic polyimide, polyether imide, polycarbonate, polyphenyl ether or polyamide;
the thermosetting resin is one or a mixture of epoxy resin, bismaleimide resin, thermosetting polyimide resin, polybenzoxazine resin, phenolic resin, cyanate resin or unsaturated polyester resin.
4. The surface-protected conductive composite of claim 1, wherein: the synthetic rubber is one or a mixture of more of styrene butadiene rubber, chloroprene rubber, ethylene propylene rubber, nitrile rubber, hydrogenated nitrile rubber, butyl rubber, epichlorohydrin rubber, polysulfide rubber, fluorosilicone rubber, silicon rubber or fluororubber.
5. The surface-protected conductive composite of claim 1, wherein: the resin in the high polymer resin conductive adhesive film is one or a mixture of epoxy resin, bismaleimide resin, thermosetting polyimide resin, polybenzoxazine resin, phenolic resin, cyanate resin and unsaturated polyester resin;
the conductive particles used in the polymer resin conductive adhesive film are one or a mixture of more of carbon nano tubes, graphene, carbon black, graphite, silver powder, nickel powder, aluminum powder, iron powder, copper powder and gold powder.
6. The surface-protected conductive composite of claim 1, wherein: the pure conductive metal net is one or a mixture of a copper net and an aluminum foil net.
7. A method of making the surface-protected conductive composite of claim 1, wherein: the method comprises the following steps:
step one, preparation of prefabricated part of conductive composite material
Paving and pasting the material of the conductive layer (2) on one side or two sides of a prepreg blank of the fiber reinforced resin matrix composite material, and then curing by adopting a forming process to obtain a prefabricated part, wherein the curing degree of the prefabricated part exceeds 30%;
step two, pretreatment of the prefabricated member
The surface of the prefabricated member is pretreated by sand blasting or grinding and then cleaning, and then an adhesive layer (3) is sprayed, brushed or paved on one side or two sides of the prefabricated member;
step three, preparation of surface protection type conductive composite material
And (3) paving the protective layer (5) on the adhesive layer (3), and performing compression molding after paving to obtain the surface protection type conductive composite material.
8. The method of preparing a surface-protected conductive composite as claimed in claim 7, wherein: the curing method of the preform in the first step is autoclave, RTM, vacuum bag method, liquid forming process or resin film impregnation process.
9. The method of preparing a surface-protected conductive composite as claimed in claim 7, wherein: the surface protection type conductive composite material is in a flat plate or curved surface shape.
CN201810963790.1A 2018-08-22 2018-08-22 Surface protection type conductive composite material and preparation method thereof Active CN109291575B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810963790.1A CN109291575B (en) 2018-08-22 2018-08-22 Surface protection type conductive composite material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810963790.1A CN109291575B (en) 2018-08-22 2018-08-22 Surface protection type conductive composite material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN109291575A CN109291575A (en) 2019-02-01
CN109291575B true CN109291575B (en) 2020-06-30

Family

ID=65165509

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810963790.1A Active CN109291575B (en) 2018-08-22 2018-08-22 Surface protection type conductive composite material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109291575B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109808196B (en) * 2019-02-26 2021-01-08 中国人民解放军国防科技大学 Fiber laminated composite material containing high-orientation-degree carbon nano tubes between layers and preparation method thereof
CN110350705A (en) * 2019-07-05 2019-10-18 张峰铭 The fire-proof motor and its method of a kind of waterproof and dustproof, Anti-burnout
CN110571056A (en) * 2019-07-27 2019-12-13 南通通成电子有限公司 High-frequency low-impedance electrolytic capacitor
CN110757677B (en) * 2019-11-08 2021-07-20 上海无线电设备研究所 Shielding material containing hard conductive sponge structure and manufacturing method thereof
CN111099039B (en) * 2019-12-11 2021-10-01 上海卫星工程研究所 Surface thermal control structure suitable for spacecraft and preparation method thereof
CN111457211B (en) * 2020-05-06 2021-06-29 丹阳丹金航空材料科技有限公司 High-strength and high-conductivity carbon fiber composite board support and process method thereof
CN113845862B (en) * 2020-06-28 2023-01-24 中国科学院理化技术研究所 Conductive and heat-conducting adhesive film and preparation method and application thereof
CN112659673A (en) * 2020-12-18 2021-04-16 苏州驭奇材料科技有限公司 High-frequency electromagnetic wave absorption film with high thermal conductivity and production device thereof
CN113977985B (en) * 2021-11-19 2024-04-09 中国航发北京航空材料研究院 Preparation method of rigidity-variable wear-resistant vibration-damping composite material
CN114193844A (en) * 2021-11-23 2022-03-18 深圳市塬煌电子科技有限公司 Chip detection film and manufacturing method and detection method thereof
CN115431605A (en) * 2022-07-25 2022-12-06 成都飞机工业（集团）有限责任公司 X-band stealth/lightning protection skin and preparation method thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203038739U (en) * 2012-12-30 2013-07-03 西安超码复合材料公司 Pressure relief device of composite jacket arrester
CN104893601B (en) * 2015-05-19 2017-05-17 中国航空工业集团公司北京航空材料研究院 Conductive adhesive film with two conductive structures and preparation method of conductive adhesive film
EP3383640B1 (en) * 2015-11-30 2023-06-07 Cytec Industries Inc. Surfacing materials for composite structures

Also Published As

Publication number Publication date
CN109291575A (en) 2019-02-01

Similar Documents

Publication Publication Date Title
CN109291575B (en) Surface protection type conductive composite material and preparation method thereof
EP2922685B1 (en) Bonding of composite materials
US10090715B2 (en) System and method for transmitting data or power across a structural component
EP2440622B1 (en) Method for protecting a substrate from lightning strikes
US9517594B2 (en) Composite structure having a stabilizing element
US6964723B2 (en) Method for applying pressure to composite laminate areas masked by secondary features
US20140216638A1 (en) Method and System of Making Composite Structures Having Gap Fillers with Chopped Fiber Material
CN110228251B (en) Light alloy and composite material efficient heterogeneous connector and preparation method thereof
US8057888B2 (en) Toughened resin fiber laminates with titanium particles
WO2012091897A1 (en) Method of fabricating a composite structure with a conductive surface
KR20120099275A (en) Methods of imparting conductivity to materials used in composite article fabrication & materials thereof
CN104385627A (en) Advanced resin-based composite material with anti-lightning surface function layer, and preparation method thereof
CN110920178B (en) Variable-rigidity conductive composite material and preparation method thereof
KR20150109253A (en) Fabrication of composite laminates using temporarily stitched preforms
JP2016528345A (en) Process for producing thermoplastic fiber composite and fan blade formed thereby
Chawla et al. Polymer matrix composites
Katagiri et al. Resin molding by using electro-activated deposition for efficient manufacturing of carbon fiber reinforced plastic
CN111231456A (en) Fiber-metal hybrid composite laminate and preparation method thereof
CN113681942A (en) Co-curing wave-absorbing composite material and preparation method thereof
Mills et al. Investigation, manufacture, and testing of damage-resistant airframe structures using low-cost carbon fibre composite materials and manufacturing technology
CN112706427B (en) Lightning stroke protection, electromagnetic shielding and bearing integrated aviation material and preparation method thereof
CN111572057A (en) Tool and associated manufacturing method
US20100034997A1 (en) Metal-composite bonding methods and compositions
CN117341249A (en) Preparation method and application of damping composite material
US20220042494A1 (en) Low-cost carbon fiber-based lightning strike protection

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant