CN107243966B - Flame-retardant wave-absorbing carbon fiber composite board and manufacturing method thereof - Google Patents

Flame-retardant wave-absorbing carbon fiber composite board and manufacturing method thereof Download PDF

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Publication number
CN107243966B
CN107243966B CN201710355370.0A CN201710355370A CN107243966B CN 107243966 B CN107243966 B CN 107243966B CN 201710355370 A CN201710355370 A CN 201710355370A CN 107243966 B CN107243966 B CN 107243966B
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wood board
flame
retardant
carbon fiber
wave
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CN107243966A (en
Inventor
盛建国
余文达
吴晓金
刘科汲
郭永春
张子鑫
汤继俊
蔡新伟
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Marine Equipment and Technology Institute Jiangsu University of Science and Technology
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Marine Equipment and Technology Institute Jiangsu University of Science and Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/34—Organic impregnating agents
    • B27K3/50—Mixtures of different organic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/04—Impregnating in open tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/02—Cutting strips from a rotating trunk or piece; Veneer lathes
    • B27L5/04—Cutting strips from a rotating trunk or piece; Veneer lathes the trunk being rotated about an axis lying outside it or about an axis which does not correspond to the axis of the trunk
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood 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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    • 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
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
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    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
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    • C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
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    • C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
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    • B32B2307/212—Electromagnetic interference shielding
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    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
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Abstract

The invention discloses a flame-retardant wave-absorbing type carbon fiber composite wood board which is a board layer structure body with a split structure. The composite wood board provided by the invention is flame-retardant and wave-absorbing, has an oxygen index of 42-48, a grain-following compressive strength of more than 100MPa, a bending strength of more than 200MPa and a specific lead equivalent of more than 0.012Pb/mm, can effectively absorb electromagnetic waves such as infrared rays, X rays, alpha rays, beta rays and the like, and is high in radiation resistance. The invention also discloses a manufacturing method of the flame-retardant wave-absorbing carbon fiber composite board.

Description

Flame-retardant wave-absorbing carbon fiber composite board and manufacturing method thereof
Technical Field
The invention relates to a composite wood board, in particular to a flame-retardant wave-absorbing carbon fiber composite wood board and a manufacturing method thereof.
Background
The wood is composed of 90% of cellulose, hemicellulose, lignin and water, 10% of extract, ash and the like, and the molecular structure, the properties and the mutual relationship of the main chemical components are not only the material basis of various properties of the wood, but also the basis of wood modification, flame retardance and wave absorption treatment.
With the development of science and technology, the wave-absorbing material has special application, especially has important function in the military field, secondly, people need to contact more and more electric appliances in work and daily life, the electric appliances can generate more or less electromagnetic radiation, so that the human health is harmed, and the wave-absorbing material can effectively absorb various rays harmful to the human body. The wood as one of the four main materials is widely applied to the coating industry, and is converted into a wave-absorbing material (polyimide, carbon fiber and a wave-absorbing adhesive are added and are wave-absorbing materials) by combining certain processes, and the defects of flammability and poor mechanical property of the wood are overcome, so that the high-flame-retardance wave-absorbing wood with strong mechanical property has important significance in research.
The patent CN201610730593.6 describes an intelligent wave-absorbing material and a preparation method thereof, and introduces an intelligent wave-absorbing material and a preparation method thereof, wherein the intelligent wave-absorbing material sequentially comprises a high-frequency wave-absorbing layer, a low-frequency wave-absorbing layer and a substrate layer from top to bottom. The high-frequency wave-absorbing layer is a wave-absorbing material for absorbing a 2GHz-18GHz frequency band, and comprises a surface layer high-frequency wave-absorbing material and a middle layer high-frequency wave-absorbing material embedded in the surface layer high-frequency wave-absorbing material, and an additive of the high-frequency wave-absorbing layer adopts carbonyl iron particles. The low-frequency wave-absorbing layer is a wave-absorbing material for absorbing a frequency band of 1GHz-2GHz, and FeSi particles are adopted as an additive of the wave-absorbing material. The base layer includes a metal substrate and a driving electromagnet embedded in the metal substrate. The patent CN201010148080.7 film structure Ku waveband radar wave-absorbing material introduces a film structure Ku waveband radar wave-absorbing material which mainly comprises six wave-absorbing material layers and five plastic films, wherein a plastic film is arranged between each two wave-absorbing material layers of the six wave-absorbing material layers, and the first wave-absorbing material layer is a mixture of 1.50 parts of coupling agent, 50 parts of diluent, 150 parts of ferrite and 3242 parts of 60% epoxy resin 53.67; the second wave-absorbing material layer is a mixture of 1.50 parts of coupling agent, 50 parts of diluent, 150 parts of carbonyl iron absorbent, 39.83 parts of 60% epoxy resin and 12.93 parts of curing agent; the third wave-absorbing material layer is a mixture of 1.50 parts of coupling agent, 50 parts of diluent, 150 parts of carbonyl iron absorbent, 109.02 parts of 60% epoxy resin and 33.10 parts of curing agent; the fourth, fifth and sixth wave-absorbing material layers are a mixture of 1.50 parts of coupling agent, 50 parts of diluent, 150 parts of carbonyl iron absorbent, 39.83 parts of 60% epoxy resin and 12.93 parts of curing agent. Patent CN201610471044.1 a heat-conducting wave-absorbing material and a preparation method thereof introduce a heat-conducting wave-absorbing material and a preparation method thereof. The heat conduction type wave-absorbing material comprises the following components: wave-absorbing material binder, wave-absorbing material and auxiliary agent; according to the mass percentage, the wave-absorbing material adhesive accounts for 99.2-99.7%, the wave-absorbing material accounts for 0.2-0.5%, and the auxiliary agent accounts for 0.1-0.3%; the wave-absorbing material is a graphene material. The above patents are all direct preparation of wave-absorbing materials, are iron-based wave-absorbing materials, have poor wave-absorbing strength, complex manufacturing process and high cost, and cannot be combined with wood.
Disclosure of Invention
The invention aims to overcome the defects of flammability, poor mechanical property and incapability of absorbing waves of wood, and provides a flame-retardant wave-absorbing carbon fiber composite wood board and a manufacturing method thereof.
The novel wave-absorbing wood glue is formed by adding wave-absorbing materials into the wood glue, and then polyimide and carbon fiber wave-absorbing materials are glued, so that the mechanical property and the flame retardant property of the material can be improved while wave absorption is realized (the polyimide and the carbon fiber materials have good wave-absorbing and flame retardant properties, and can be expanded and applied to wider fields such as textiles, plastics, metal compounding and the like).
Compared with the common wood board, the composite wood board prepared by the invention has the advantages that the flame retardant capability is increased by 75-100%, the wave absorbing capability is increased by 139-174%, the mechanical strength is increased by 24-49%, the production process is simple, the cost is low, and the composite wood board is widely applied to the fields of military, aerospace, ships and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a fire-retardant compound plank of ripples type carbon fiber, compound plank is the sheet layer structure body of components of a whole that can function independently structure, including ordinary plank I1, polyimide layer 2, carbon fiber layer 3, ebonite 4 and ordinary plank II 5, through adopting alkali lye submergence preliminary treatment with ordinary plank I1, ebonite 4 and ordinary plank II 5, fire retardant treatment and drying, it will in proper order ordinary plank I1 through first wood glue film 6 with polyimide layer 2 pressfitting is connected, polyimide layer 2 through first fire-retardant inhale ripples adhesive layer 7 with 3 pressfitting of carbon fiber layer are connected, carbon fiber layer 3 through the fire-retardant ripples adhesive layer 8 that inhales of second with ebonite 4 pressfitting is connected, ebonite 4 through second wood glue film 9 with ordinary plank II 5 pressfitting is connected.
Further, the common wood board I1 and the common wood board II 5 are wood boards with the thickness of 0.1-5 cm.
Further, the hardwood plate 4 is any one of ash, locust, teak, rosewood, willow, oak, american poplar, acerola rose wood, sago pear wood and beech wood with the thickness of 0.5-5 cm.
Furthermore, the polyimide layer 2 is a sheet-shaped body with the thickness of 0.1-2 mm, and the material is polybismaleimide or RMR type polyimide.
Further, the carbon fiber layer 3 is a sheet-shaped body with the thickness of 0.01-0.2 mm, and the material is any one of polyacrylonitrile-based carbon fiber, asphalt-based carbon fiber and phenolic aldehyde-based carbon fiber.
Further, the flame-retardant wave-absorbing adhesive is prepared by mixing and uniformly stirring 10-15 parts of acrylate polymer, 15-30 parts of polyester polyol, 15-35 parts of polyether polyol, 5-10 parts of tackifying resin, 10-30 parts of polyimide, 10-20 parts of nano carbonyl iron, 5-10 parts of graphene, 5-20 parts of nano titanium dioxide, 10-20 parts of nano iron tetroxide, 2-4 parts of bismuth oxide, 20-50 parts of barium sulfate, 20-60 parts of magnesium hydroxide, 10-50 parts of nano nickel-coated carbon and 2-5 parts of silane coupling agent in an environment at the temperature of 80-120 ℃ to prepare the flame-retardant wave-absorbing adhesive.
In order to achieve the purpose, the invention adopts another technical scheme:
a manufacturing method of a flame-retardant wave-absorbing carbon fiber composite board comprises the following steps:
(1) Putting the common wood board I1, the common wood board II 5 and the hardwood board 4 into a reaction kettle, adding alkali liquor to completely immerse the common wood board I1, the common wood board II 5 and the hardwood board 4 for 24-48 hours, washing the mixture with water, performing steam drying at 100-120 ℃, and vacuumizing to 100-200 Pa to obtain the common wood board I1, the common wood board II 5 and the hardwood board 4 with the water content of 8-15%;
(2) Immersing the common wood board I1, the common wood board II 5 and the hardwood board 4 obtained in the step (1) by using a water-based flame retardant with the concentration of 10-15%, pressurizing to 1MPa, maintaining for 20-30 min, releasing pressure and discharging the flame retardant, washing with water, vacuumizing to 100-200 Pa, and performing steam drying at 100-120 ℃ to obtain the common wood board I1, the common wood board II 5 and the hardwood board 4 with the water content of 5-10%;
(3) Adhering the common wood board I1 obtained in the step (2) and the sheet-shaped polyimide layer 2 by using a wood glue adhesive at normal temperature and normal pressure, and pressing to obtain a polyimide composite wood board;
(4) Adhering the polyimide composite wood board obtained in the step (3) with the sheet-shaped carbon fiber structure layer 3 by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
(5) And (3) adhering the carbon fiber composite wood board obtained in the step (4) and the hard wood board 4 by using a combustion wave absorption adhesive at normal temperature and normal pressure, pressing, adhering the common wood board II 5 obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing type carbon fiber composite wood board.
Further, the alkali liquor is any one of sodium hydroxide and potassium hydroxide with the concentration of 0.2-1%.
Further, the flame retardant is any one of FRW wood flame retardant, ammonium dihydrogen phosphate monoboronic acid and N-hydroxymethyl-3- (dimethoxyphosphoryl) propionamide with the concentration of 10%.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the composite wood board prepared by the invention can not be burnt when meeting open fire and only can be slightly carbonized, the flame retardant property of the wood is greatly changed, the application range of the wood is widened, the size of the composite wood board is stable, the wood expansion is less than 15 percent under the humid exposure condition, the oxygen index of the flame retardant wood exceeds 42 percent, and the smoke density is less than 43kg/m 3 Without reducing impact strength, the wet compression strength is doubled, and the grain-following compression strength>100MPa, bending strength>200MPa, density>0.8g/cm 3 Specific lead equivalent>0.012Pb/mm, can effectively absorb infrared, X, alpha, beta and other rays, and has high radiation resistance.
2. The invention has simple production process and low cost, is suitable for processing common wood boards with the thickness of 0.1-5 cm, and the prepared composite wood board has smooth surface and can not bubble, and polyimide, carbon fiber and wood board multilayer adhesive compounding can be carried out to increase the wave-absorbing strength and the mechanical property of wood.
3. The flame-retardant wave-absorbing adhesive can be expanded to be applied to wider fields of textile, plastic, metal composite and the like, can be adhered with flame-retardant materials such as polyimide layers and the like, and can be used for producing more flame-retardant wave-absorbing products.
4. In the step (2) of the production process, the flame retardant is discharged after the reaction is finished, and the flame retardant can be repeatedly used through operations such as filtering separation, adding the flame retardant and the like, so that the production cost is reduced.
The product prepared by the invention has the following advantages:
polyimide is a good wave-absorbing organic polymer material, can resist high temperature of more than 400 ℃, has a long-term use temperature range of-200 to 300 ℃, a dielectric constant of 4.0 under 103 Hz and dielectric loss of only 0.004 to 0.007, belongs to a high-insulation material from F level to H level, and is a good flame-retardant wave-absorbing material; the carbon fiber has high axial strength and modulus, low density, ultrahigh temperature resistance in a non-oxidation environment, good fatigue resistance and good electromagnetic shielding property, is a better flame-retardant and electromagnetic-resistant material, and can obviously enhance the mechanical property of the composite material; the composite adhesive is self-ground flame-retardant wave-absorbing adhesive, so that the produced composite wood board has the advantages of flame retardance, wave absorption and high mechanical property.
Drawings
FIG. 1 is a cross-sectional view of a structural layer of the composite wood board of the present invention;
in the figure: 1. a common wood board I; 2. a polyimide layer; 3. a carbon fiber structure layer; 4. a hard wood board; 5. a common wood board II; 6. a first wood glue layer; 7. a first flame-retardant wave-absorbing adhesive layer; 8. a second flame-retardant wave-absorbing adhesive layer; 9. and a second wood glue layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the attached drawing 1, the flame-retardant wave-absorbing carbon fiber composite wood board is a split structure board layer structure and comprises five layers, namely a common wood board I1, a polyimide layer 2, a carbon fiber layer 3, a hardwood board 4 and a common wood board II 5, the common wood board I1, the hardwood board 4 and the common wood board II 5 are subjected to alkali liquor immersion pretreatment, flame retardant treatment and drying are sequentially carried out, the common wood board I1 is connected with the polyimide layer 2 in a pressing mode through a first wood glue layer 6, the polyimide layer 2 is connected with the carbon fiber layer 3 in a pressing mode through a first flame-retardant wave-absorbing adhesive layer 7, the carbon fiber layer 3 is connected with the hardwood board 4 in a pressing mode through a second flame-retardant wave-absorbing adhesive layer 8, and the hardwood board 4 is connected with the common wood board II (5) in a pressing mode through a second wood 9, so that the flame-retardant wave-absorbing carbon fiber five-layer composite wood board is manufactured.
Wherein the common wood board I1 and the common wood board II 5 are wood boards with the thickness of 0.1-5 cm.
The hardwood plate 4 is any one of ash tree, locust tree, teak, flowering pear, rosewood, willow, oak, american poplar, acerola, sago pear and beech with the thickness of 0.5-5 cm.
The polyimide layer is a sheet body with the thickness of 0.1-2 mm, and is made of poly-bismaleimide or RMR type polyimide.
The carbon fiber structure layer is a sheet-shaped body with the thickness of 0.01-0.2 mm, and the material is any one of polyacrylonitrile-based carbon fiber, asphalt-based carbon fiber and phenolic aldehyde carbon fiber.
The flame-retardant wave-absorbing adhesive is prepared by mixing and uniformly stirring 10-15 parts of acrylate polymer, 15-30 parts of polyester polyol, 15-35 parts of polyether polyol, 5-10 parts of tackifying resin, 10-30 parts of polyimide, 10-20 parts of nano carbonyl iron, 5-10 parts of graphene, 5-20 parts of nano titanium dioxide, 10-20 parts of nano iron tetroxide, 2-4 parts of bismuth oxide, 20-50 parts of barium sulfate, 20-60 parts of magnesium hydroxide, 10-50 parts of nano nickel-coated carbon and 2-5 parts of silane coupling agent in an environment at the temperature of 80-120 ℃ according to parts by mass.
The invention relates to a method for manufacturing a flame-retardant wave-absorbing carbon fiber composite board
Example 1
1. Putting a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1% sodium hydroxide solution to completely immerse the wood boards for 24 hours, washing with water, carrying out steam drying at 100 ℃, and vacuumizing to 100Pa to obtain the wood board with the water content of 8-15%.
2. Immersing the wood board obtained in the step 1 in an FRW wood flame retardant with the concentration of 10%, pressurizing to 1MPa, maintaining for 20min, releasing pressure, unloading the FRW wood flame retardant, washing with water, vacuumizing to 200Pa, and performing steam drying at 100 ℃ to obtain a common wood board I1, a common wood board II 5 and a hardwood board 4 with the water content of 6-10%.
3. And (3) gluing one surface of the common wood board I1 obtained in the step (2) with the sheet-shaped polybismaleimide layer 2 by using a wood glue adhesive at normal temperature and normal pressure, and pressing to obtain the polyimide composite wood board.
4. And (4) adhering one surface of the polyimide composite wood board obtained in the step (3) with the sheet polyacrylonitrile-based carbon fiber structural layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain the carbon fiber composite wood board.
5. And (3) gluing one side of the carbon fiber composite wood board obtained in the step (4) with the hard wood board 4 by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
Example 2
1. Placing a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1% sodium hydroxide solution to completely immerse the wood boards for 36 hours, carrying out steam drying at 110 ℃ after water washing, and vacuumizing to 150Pa to obtain a wood board with the water content of 8-14%;
2. immersing the wood board obtained in the step 1 in an FRW wood flame retardant with the concentration of 10%, pressurizing to 1MPa, maintaining for 25min, releasing pressure, unloading the FRW wood flame retardant, washing with water, vacuumizing to 150Pa, and performing steam drying at 110 ℃ to obtain a common wood board I1, a common wood board II 5 and a hardwood board 4 with the water content of 5-10%;
3. and (3) gluing one surface of the common wood board I1 obtained in the step (2) with the sheet RMR type polyimide layer 2 by using a wood glue adhesive at normal temperature and normal pressure, and pressing to obtain the polyimide composite wood board.
4. And (4) adhering one surface of the polyimide composite wood board obtained in the step (3) with the sheet polyacrylonitrile-based carbon fiber structural layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain the carbon fiber composite wood board.
5. And (3) gluing one side of the carbon fiber composite wood board obtained in the step (4) with the hard wood board 4 by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
Example 3
1. Putting a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1% of sodium hydroxide solution to completely immerse the wood boards for 48 hours, washing with water, carrying out steam drying at 100 ℃, and vacuumizing to 150Pa to obtain the wood boards with the water content of 8-15%;
2. immersing the wood obtained in the step 1 in a ammonium dihydrogen phosphate-boric acid flame retardant with the concentration of 10%, pressurizing to 1MPa, maintaining for 25min, releasing pressure and unloading the ammonium dihydrogen phosphate-boric acid flame retardant, washing with water, vacuumizing to 150Pa, and performing steam drying at 120 ℃ to obtain a common wood board I1, a common wood board II 5 and a hard wood board 4 with the water content of 5-10%;
3. at normal temperature and normal pressure, gluing one surface of the common wood board I1 obtained in the step (2) with the sheet-shaped polybismaleimide layer 2 by using common wood glue, and pressing to obtain a polyimide composite wood board;
(4) Adhering one surface of the polyimide composite wood board obtained in the step 3) with the flaky asphalt-based carbon fiber structure layer 3 by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
(5) And (3) gluing one side of the carbon fiber composite wood board obtained in the step (4) with a hard wood board by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
Example 4
1. Putting a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1% of potassium hydroxide solution to completely immerse the wood boards for 24 hours, washing with water, carrying out steam drying at 120 ℃, and vacuumizing to 120Pa to obtain the wood board with the water content of 8-14%;
2. immersing the wood board obtained in the step 1 in a ammonium dihydrogen phosphate-boric acid flame retardant with the concentration of 10%, pressurizing to 1MPa, maintaining for 30min, releasing pressure and unloading the N-hydroxymethyl-3- (dimethoxy phosphoryl) propionamide flame retardant, washing with water, vacuumizing to 100Pa, and performing steam drying at 120 ℃ to obtain a common wood board I1, a common wood board II 5 and a hard wood board 4 with the water content of 5-10%;
3. at normal temperature and normal pressure, gluing one surface of the common wood board I1 obtained in the step (2) with the sheet-shaped RMR type polyimide layer 2 by using common wood glue, and pressing to obtain a polyimide composite wood board;
4. adhering one surface of the polyimide composite wood board obtained in the step (3) with the flaky asphalt-based carbon fiber structure layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
5. and (3) gluing one side of the carbon fiber composite wood board obtained in the step (4) with a hard wood board by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
Example 5
1. Putting a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1 percent of potassium hydroxide solution to completely immerse the wood boards for 36 hours, carrying out steam drying at 110 ℃ after water washing, and vacuumizing to 110Pa to obtain the wood boards with the water content of 8-12 percent;
2. immersing the wood board obtained in the step 1) by adopting an N-hydroxymethyl-3- (dimethoxyphosphoryl) propionamide flame retardant with the concentration of 15%, pressurizing to 1MPa, maintaining for 30min, releasing pressure, unloading the N-hydroxymethyl-3- (dimethoxyphosphoryl) propionamide flame retardant, washing, vacuumizing to 100Pa, and performing steam drying at 120 ℃ to obtain a common wood board I1, a common wood board II 5 and a hard wood board 4 with the water content of 5-10%;
3. at normal temperature and normal pressure, gluing one surface of the common wood board I1 obtained in the step (2) with the sheet-shaped RMR type polyimide layer 2 by using common wood glue, and pressing to obtain a polyimide composite wood board;
4. adhering one surface of the polyimide composite wood board obtained in the step (3) with the flaky phenolic aldehyde-based carbon fiber structure layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
5. and (3) gluing one side of the carbon fiber composite wood board obtained in the step (4) with a hard wood board by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
Example 6
1. Putting a common wood board I1, a common wood board II 5 and a hardwood board 4 with the breadth shape and size of 100cm multiplied by 1cm multiplied by 10cm into a reaction kettle, adding 1% of potassium hydroxide solution to completely immerse the wood boards for 48 hours, washing with water, carrying out steam drying at 120 ℃, and vacuumizing to 120Pa to obtain the wood board with the water content of 8-12%;
2. immersing the wood board obtained in the step 1 in an N-hydroxymethyl-3- (dimethoxyphosphoryl) propionamide flame retardant with the concentration of 15%, pressurizing to 1MPa, maintaining for 30min, releasing pressure, unloading the N-hydroxymethyl-3- (dimethoxyphosphoryl) propionamide flame retardant, washing, vacuumizing to 100Pa, and performing steam drying at 120 ℃ to obtain a common wood board I1, a common wood board II 5 and a hardwood board 4 with the water content of 5-10%;
3. at normal temperature and normal pressure, gluing one surface of the common wood board I1 obtained in the step (2) with the sheet-shaped polybismaleimide layer 2 by using common wood glue, and pressing to obtain a polyimide composite wood board;
4. adhering one surface of the polyimide composite wood board obtained in the step (3) with the sheet-shaped phenolic aldehyde-based carbon fiber structure layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
5. and (3) gluing one surface of the carbon fiber composite wood board obtained in the step (4) with a hard wood board by using the flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
The flame retardant property of the flame-retardant wave-absorbing carbon fiber composite wood board is tested by simulating a large board combustion method according to the national standard (GB/T12441-2005), the smoke density of the composite wood board is tested by the national standard (GB/T8627-2007), the mechanical property of the composite wood board is tested by methods such as the national standard (GB/T15104-2006), and the average result of six times of measurement is as shown in the following table 1:
TABLE 1
Figure BDA0001298938440000081
As can be seen from the table 1, the average fire-resistant time of the flame-retardant wave-absorbing carbon fiber composite wood board prepared by the method is greatly longer than that of a blank wood board, the oxygen index reaches 42-48, the smoke density is greatly reduced, the pressure resistance along the grain is more than 100MPa, the bending strength is more than 200MPa, the specific lead equivalent is more than 0.012Pb/mm, the flame-retardant wave-absorbing carbon fiber composite wood board can effectively absorb infrared, X, alpha, beta rays and other electromagnetic waves, and the radiation-proof performance is high.
The foregoing is only a preferred embodiment of the present invention. The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such equivalent changes and modifications as would be obvious to one skilled in the art be included herein are deemed to be within the scope and spirit of the present invention as defined by the appended claims.

Claims (8)

1. The flame-retardant wave-absorbing carbon fiber composite wood board is characterized in that the composite wood board is a board layer structure body of a split structure and comprises a common wood board I (1), a polyimide layer (2), a carbon fiber layer (3), a hard wood board (4) and a common wood board II (5), the common wood board I (1), the hard wood board (4) and the common wood board II (5) are subjected to alkali liquor immersion pretreatment, a flame retardant is treated and dried, the common wood board I (1) is in press-fit connection with the polyimide layer (2) through a first wood glue layer (6), the polyimide layer (2) is in press-fit connection with the carbon fiber layer (3) through a first flame-retardant adhesive layer (7), the carbon fiber layer (3) is in press-fit connection with the hard wood board (4) through a second flame-retardant adhesive wave-absorbing layer (8), and the hard wood board (4) is in press-fit connection with the common wood board II (5) through a second wood glue layer (9); the flame-retardant wave-absorbing adhesive used for the first flame-retardant wave-absorbing adhesive layer (7) and the second flame-retardant wave-absorbing adhesive layer (8) is composed of, by mass, 10-15 parts of acrylate polymer, 15-30 parts of polyester polyol, 15-35 parts of polyether polyol, 5-10 parts of tackifying resin, 10-30 parts of polyimide, 10-20 parts of nano carbonyl iron, 5-10 parts of graphene, 5-20 parts of nano titanium dioxide, 10-20 parts of nano ferric oxide, 2-4 parts of bismuth oxide, 20-50 parts of barium sulfate, 20-60 parts of magnesium hydroxide, 10-50 parts of nano carbon-coated nickel and 2-5 parts of silane coupling agent, and is prepared by mixing and uniformly stirring at the temperature of 80-120 ℃.
2. The flame-retardant wave-absorbing carbon fiber composite wood board according to claim 1, wherein the common wood board I (1) and the common wood board II (5) are wood boards with the thickness of 0.1-5 cm.
3. The flame-retardant wave-absorbing carbon fiber composite wood board according to claim 1, wherein the hardwood board (4) is any one of ashtree, locust wood, teak, rosewood, willow, oak, american poplar, acerola, sago and beech with a thickness of 0.5-5 cm.
4. The flame-retardant wave-absorbing carbon fiber composite wood board according to claim 1, wherein the polyimide layer (2) is a sheet with a thickness of 0.1-2 mm and is made of poly bismaleimide or RMR type polyimide.
5. The flame-retardant wave-absorbing carbon fiber composite wood board according to claim 1, wherein the carbon fiber layer (3) is a sheet-shaped body with a thickness of 0.01-0.2 mm, and is made of any one of polyacrylonitrile-based carbon fibers, asphalt-based carbon fibers and phenolic aldehyde-based carbon fibers.
6. The manufacturing method of the flame-retardant wave-absorbing carbon fiber composite wood board according to any one of claims 1 to 5, characterized by comprising the following steps:
(1) Putting the common wood boards I, II (1, 5) and the hardwood board (4) into a reaction kettle, adding alkali liquor to completely immerse the common wood boards I, II (1, 5) and the hardwood board (4) for 24-48 h, washing the common wood boards with water, performing steam drying at 100-120 ℃, and vacuumizing to 100-200 Pa to obtain the common wood boards I, II (1, 5) and the hardwood board (4) with the water content of 8-15%;
(2) Immersing the common wood boards I, II (1, 5) and the hardwood board (4) obtained in the step (1) by using a water-based flame retardant with the concentration of 10-15%, pressurizing to 1MPa, maintaining for 20-30 min, releasing pressure and discharging the flame retardant, washing with water, vacuumizing to 100-200 Pa, and performing steam drying at 100-120 ℃ to obtain the common wood boards I, II (1, 5) and the hardwood board (4) with the water content of 5-10%;
(3) Gluing the common wood board I (1) obtained in the step (2) and the sheet-shaped polyimide layer (2) by adopting a wood glue adhesive at normal temperature and normal pressure, and laminating to obtain a polyimide composite wood board;
(4) Adhering the polyimide composite wood board obtained in the step (3) with the flaky carbon fiber layer (3) by adopting a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, and pressing to obtain a carbon fiber composite wood board;
(5) And (3) gluing the carbon fiber composite wood board obtained in the step (4) and the hardwood board (4) by using a flame-retardant wave-absorbing adhesive at normal temperature and normal pressure, pressing, gluing the common wood board II (5) obtained in the step (2) by using a wood glue adhesive, and pressing to obtain the flame-retardant wave-absorbing carbon fiber composite wood board.
7. The manufacturing method of the flame-retardant wave-absorbing carbon fiber composite wood board according to claim 6, characterized in that: the alkali liquor is 0.2-1% sodium hydroxide or potassium hydroxide.
8. The manufacturing method of the flame-retardant wave-absorbing carbon fiber composite wood board according to claim 6, characterized in that: the flame retardant is any one of FRW wood flame retardant with the concentration of 10%, ammonium dihydrogen phosphate-boric acid and N-hydroxymethyl-3- (dimethoxy phosphoryl) propionamide.
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CN101805491A (en) * 2009-09-22 2010-08-18 龙海市奈特化工有限责任公司 Composite material with electromagnetic shielding effect and preparation method thereof
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CN106078975A (en) * 2016-06-01 2016-11-09 江苏科技大学 A kind of acetylation flame retardant type carbon fiber composite wood board and production technology thereof
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