CN112223860A - Composite board for ocean platform living area enclosure wall and preparation method thereof - Google Patents

Composite board for ocean platform living area enclosure wall and preparation method thereof Download PDF

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Publication number
CN112223860A
CN112223860A CN202011015106.0A CN202011015106A CN112223860A CN 112223860 A CN112223860 A CN 112223860A CN 202011015106 A CN202011015106 A CN 202011015106A CN 112223860 A CN112223860 A CN 112223860A
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composite
living area
ocean platform
carbon fiber
preparing
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CN112223860B (en
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王晓东
乔英杰
郑婷
张晓红
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Harbin Engineering University
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Harbin Engineering University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • 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
    • B32B15/04—Layered products comprising a layer of metal comprising metal 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
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • 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
    • B32B2262/0269—Aromatic 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
    • B32B2262/10—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
    • B32B2266/00—Composition of foam
    • B32B2266/04—Inorganic
    • B32B2266/045—Metal
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • 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
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4426—Stationary floating buildings for human use, e.g. floating dwellings or floating restaurants

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a composite board for an ocean platform living area surrounding wall and a preparation method thereof, and belongs to the technical field of ocean engineering. The invention solves the problems of large overall structure weight, poor heat insulation and sound insulation performance and the like of a platform which adopts a traditional enclosure wall as a steel plate and square steel beam reinforced structure. And the problem that the composite material is easy to crack between layers in ocean engineering is solved through the short fiber toughening layer. This application improves combined material damping shock attenuation, sound insulation performance through carbon fiber elastomer composite bed to through improving intensity reduction overall structure weight with metal foam complex together. Compared with the traditional metal materials such as steel and aluminum alloy, the composite material has a much higher strength ratio, can greatly reduce the platform mass and is convenient to install and maintain when being applied to the ocean drilling platform, the lighter structure can increase the effective load and the operating range, and great contribution is made to the light weight of the drilling platform.

Description

Composite board for ocean platform living area enclosure wall and preparation method thereof
Technical Field
The invention relates to a composite board for an ocean platform living area surrounding wall and a preparation method thereof, and belongs to the technical field of ocean engineering.
Background
The semi-submersible type platform life building needs to meet the working and living demands of a large number of workers on the platform, and is generally large in scale; the conventional living building is positioned above the main deck and is rigidly connected with the main deck, and the living building can bear the total deformation load of the platform besides the movement load of the ship body; meanwhile, the semi-submersible platform has better motion performance but smaller load capacity, so that the requirement on the structural weight of the platform is higher. Therefore, the enclosing wall applied to the semi-submersible platform should have the characteristics of high strength and light weight. Present platform is formed for interior leg and outer surrounding wall with traditional leg, be steel sheet and add square girder steel reinforced structure, overall structure weight is big, and traditional leg is in order to solve thermal-insulated and sound insulation performance, sandwich glass rock wool etc. heat preservation including the middle of the outer surrounding wall, further increase overall structure weight, though above-mentioned thermal-insulated and sound insulation problem can be solved to current carbon-fibre composite sandwich structure, but its temperature resistance performance, structural strength can not directly replace interior leg, and carbon-fibre composite is in the application, fracture between the layer takes place easily. Therefore, it is necessary to provide a composite board for the surrounding wall of the living area of the ocean platform and a preparation method thereof.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a composite board for an ocean platform living area surrounding wall, which replaces the traditional steel plate frame structure.
A composite board for an enclosure wall of a living area of an ocean platform is formed by laminating a plurality of first composite units, adjacent first composite units are bonded through epoxy resin adhesive films, the first composite units are made by sequentially bonding a gradient composite material board and foamed aluminum through the epoxy resin adhesive films, the gradient composite material board is formed by laminating a plurality of second composite units and is cured by adopting a compression molding process; the second composite unit is formed by sequentially laminating a carbon fiber/phenolic resin composite layer, a short fiber strengthening and toughening interface layer and a carbon fiber/elastomer modified phenolic resin composite layer from top to bottom and curing by adopting a compression molding process.
Further, the cell diameter of the foamed aluminum was 2 mm.
Further, the number of the second composite units is 3-6.
The preparation method of the composite board for the surrounding wall of the living area of the ocean platform comprises the following steps:
step one, after a plurality of second composite units consisting of carbon fiber/phenolic resin composite layers, short fiber strengthening and toughening interface layers and carbon fiber/elastomer modified phenolic resin composite layers are laminated, preparing a gradient composite material plate by adopting a mould pressing process;
and step two, placing an epoxy resin adhesive film between the gradient composite material plate obtained in the step one and the foamed aluminum to obtain first composite units, laminating the plurality of first composite units, placing the epoxy resin adhesive film between the adjacent first composite units, placing the epoxy resin adhesive film in a mold, curing and molding by adopting a mold pressing process, demolding after the mold pressing is finished, and trimming and cleaning to obtain the composite plate for the ocean platform living area enclosure wall.
Further, the specific parameters of the compression process in the step one are as follows: the charging temperature is 90-100 ℃, the pressurizing temperature is 110 ℃, the heating rate is 30 ℃/min, the forming pressure is 5MPa, and the temperature is kept at 110 ℃ for 5 h.
Further, the specific parameters of the die pressing process in the second step are as follows: the molding pressure is 10MPa, and the temperature is kept at 100 ℃ for 5 h.
Further, the preparation method of the carbon fiber/phenolic resin composite layer comprises the following steps:
s1, cutting the carbon fiber 3K plain cloth for later use;
s2, using phenolic resin as impregnating solution;
and S3, impregnating the cut carbon fiber 3K plain cloth with an impregnating solution to obtain a fiber/phenolic resin composite layer.
Further, the preparation method of the carbon fiber/elastomer modified phenolic resin composite layer comprises the following steps:
firstly, cutting carbon fiber 3K plain cloth for later use;
then, mixing polyether ketone and phenolic resin to obtain an impregnation liquid, wherein the mass fraction of the polyether ketone in the impregnation liquid is 3%;
and finally, impregnating the cut carbon fiber 3K plain cloth by using an impregnating solution to obtain a fiber/elastomer modified phenolic resin composite layer.
Further, the preparation method of the short fiber strengthening and toughening interface layer comprises the following steps:
(1) ultrasonically dispersing aramid fibers with the length of 2-3cm in absolute ethyl alcohol to obtain short fiber dispersion liquid;
(2) diluting the obtained short fiber dispersion liquid by using absolute ethyl alcohol until each 1Kg of ethanol solution contains 10g of aramid fiber, and pulping the solution by using a mortar method to form suspension;
(3) using a paper making device to carry out pulp fishing on the suspension liquid, evenly interweaving aramid fibers on the paper fishing device into a sheet-shaped film, squeezing, and drying to obtain the aramid fibers with the density of 10g/cm2The short fibers strengthen the interfacial layer film.
Furthermore, the epoxy resin adhesive film is a product with the model of J-116 or J-99 produced by the institute of chemical industry in Heilongjiang province.
The invention has the following beneficial effects: the invention improves the problem that the composite material is easy to crack between layers in ocean engineering through the short fiber toughening layer, improves the damping, shock absorption and sound insulation performance of the composite material through the carbon fiber elastomer composite layer, and improves the strength and reduces the weight of the whole structure through compounding with metal foam. Compared with the traditional metal materials such as steel and aluminum alloy, the composite material has a much higher strength ratio, can greatly reduce the platform mass and is convenient to install and maintain when being applied to the ocean drilling platform, the lighter structure can increase the effective load and the operating range, and great contribution is made to the light weight of the drilling platform. Compared with the traditional steel and aluminum, the material has obviously improved fatigue resistance and corrosion resistance, thereby reducing the long-term maintenance cost. The fiber reinforced composite material has strong designability. Different reinforced fiber, resin, ply angle, layer number and laminated plate type can produce various materials with different properties. The designability of the alloy can not be achieved by traditional metals.
And the density of the composite board prepared by the method is less than 2.0g/cm3Compared with a traditional steel plate and square steel beam reinforced structure, the overall structure is smaller in weight. The foam material with the interlayer of the gradient composite material plate is adopted, the heat preservation and insulation effects are achieved, and the heat conductivity is less than 0.8W/(m.K). The composite board for the surrounding wall of the living area of the ocean platform, prepared by the invention, has the tensile strength of more than 600MPa, the compressive strength of more than 300MPa, the bending strength of more than 300MPa, the shear strength of more than 80MPa, the water absorption rate of less than or equal to 1.0 percent and the sound insulation of not less than 70 decibels. In addition, the composite board prepared by the invention has the characteristics of convenience in installation, maintenance and replacement, convenience in connection with a metal structure and the like.
Drawings
FIG. 1 is a schematic diagram of a composite board for a wall of a living area of an ocean platform; in the figure, a is a carbon fiber/phenolic resin composite layer, b is a short fiber strengthening and toughening interface layer, c is a carbon fiber/elastomer modified phenolic resin composite layer, d is an epoxy resin adhesive film, and e is foamed aluminum.
Detailed Description
The experimental procedures used in the following examples are conventional unless otherwise specified. The materials, reagents, methods and apparatus used, unless otherwise specified, are conventional in the art and are commercially available to those skilled in the art.
Example 1:
firstly, preparing a short fiber strengthening and toughening interface layer film material by adopting a papermaking process, and the specific process is as follows:
(1) short fibers of aramid fibers with the short length of 3mm are dispersed in an ethanol solution by ultrasonic vibration,
(2) after being dispersed evenly, the dispersion liquid is diluted to 10g of chopped aramid fiber in every 1Kg of ethanol solution,
(3) pulping, and forming a certain suspension by mortar tamping;
(4) and (3) papermaking, namely fishing the pulp by using a papermaking device, uniformly interweaving the short fiber pulp on the fishing device to form a sheet-shaped film, and finally preparing the short fiber strengthening and toughening interface layer film with the surface density of 10g/cm2 for later use through a papermaking process.
(5) Drying, and removing the film for later use.
Secondly, preparing a carbon fiber/phenolic resin composite layer, which comprises the following specific steps:
(1) cutting the carbon fiber 3K plain cloth for later use;
(2) using phenolic resin as impregnating solution;
(3) and (3) impregnating the cut carbon fiber 3K plain cloth with an impregnating solution to obtain a fiber/phenolic resin composite layer for later use.
Thirdly, preparing the fiber/elastomer modified phenolic resin composite layer, which comprises the following specific steps:
(1) cutting the carbon fiber 3K plain cloth for later use;
(2) mixing polyether ketone and phenolic resin to obtain an impregnation liquid, wherein the mass fraction of the polyether ketone in the impregnation liquid is 3%;
(3) and (3) impregnating the cut carbon fiber 3K plain cloth by using an impregnating solution to obtain a fiber/elastomer modified phenolic resin composite layer for later use.
And fourthly, sequentially laminating the fiber/phenolic resin composite layer, the short fiber strengthening and toughening interface layer film and the fiber// elastomer modified phenolic resin composite layer to obtain a second composite unit, then laminating 3 second composite units, placing the second composite units in a mold, and preparing the gradient composite material plate by adopting a compression molding process, wherein the loading temperature is 95 ℃, the pressurizing temperature is 110 ℃, the heating rate is 30 ℃/min, the molding pressure is 5MPa, and the temperature is kept at 110 ℃ for 5 hours.
And fifthly, laminating the gradient composite material plate, the epoxy resin adhesive film and the foamed aluminum to obtain a first composite unit, laminating a plurality of first composite units, placing the epoxy resin adhesive film between the adjacent laminated first composite units, placing the epoxy resin adhesive film in a mold, and preparing the composite plate for the ocean platform living area surrounding wall by adopting a compression molding process, wherein the molding pressure is 10MPa, and the heat is preserved for 5 hours at 100 ℃.
The performance of the composite board for the enclosure wall of the living area of the ocean platform obtained in the embodiment is detected, and the specific performance indexes are as follows: (1) mechanical properties
The tensile strength is more than 600 MPa; the compressive strength is more than 300 MPa; the bending strength is more than 300 MPa; the shear strength is more than 80 MPa;
the density is less than 2.0g/cm3。
(3) Thermal conductivity: < 0.8W/(m.K)
(4) Water absorption: less than or equal to 1.0 percent.
(5) Sound insulation and noise reduction:
the sound insulation is not less than 70 decibels.
(6) Maintainability:
the installation, maintenance and replacement are convenient, and the connection with a metal structure is convenient.

Claims (10)

1. The composite board for the surrounding wall of the living area of the ocean platform is characterized by being formed by laminating a plurality of first composite units, adjacent first composite units are bonded through epoxy resin adhesive films, the first composite units are made by sequentially bonding a gradient composite material board and foamed aluminum through the epoxy resin adhesive films, the gradient composite material board is formed by laminating a plurality of second composite units and is cured by adopting a compression molding process; the second composite unit is formed by sequentially laminating a carbon fiber/phenolic resin composite layer, a short fiber strengthening and toughening interface layer and a carbon fiber/elastomer modified phenolic resin composite layer from top to bottom and curing by adopting a compression molding process.
2. The composite board for the surrounding wall of the living area of the ocean platform as claimed in claim 1, wherein the diameter of the cells of the foamed aluminum is 2 mm.
3. The composite board for the surrounding wall of the living area of the ocean platform as claimed in claim 1, wherein the number of the second composite units is 3-6.
4. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to the claim 1, wherein the method comprises the following steps:
step one, after a plurality of second composite units consisting of carbon fiber/phenolic resin composite layers, short fiber strengthening and toughening interface layers and carbon fiber/elastomer modified phenolic resin composite layers are laminated, preparing a gradient composite material plate by adopting a mould pressing process;
placing an epoxy resin adhesive film between the gradient composite material plate obtained in the step one and the foamed aluminum to obtain a first composite unit; and laminating the plurality of first composite units, arranging an epoxy resin adhesive film between the adjacent first composite units, then arranging the epoxy resin adhesive film in a mold, curing and molding by adopting a mold pressing process, demolding after the mold pressing is finished, trimming and cleaning to obtain the composite board for the ocean platform living area surrounding wall.
5. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to claim 4, wherein the specific parameters of the compression process in the first step are as follows: the charging temperature is 90-100 ℃, the pressurizing temperature is 110 ℃, the heating rate is 30 ℃/min, the forming pressure is 5MPa, and the temperature is kept at 110 ℃ for 5 h.
6. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to claim 4, wherein the specific parameters of the die pressing process in the second step are as follows: the molding pressure is 10MPa, and the temperature is kept at 100 ℃ for 5 h.
7. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to claim 4, wherein the method for preparing the carbon fiber/phenolic resin composite layer comprises the following steps:
s1, cutting the carbon fiber 3K plain cloth for later use;
s2, using phenolic resin as impregnating solution;
and S3, impregnating the cut carbon fiber 3K plain cloth with an impregnating solution to obtain a fiber/phenolic resin composite layer.
8. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to claim 4, wherein the method for preparing the carbon fiber/elastomer modified phenolic resin composite layer comprises the following steps:
firstly, cutting carbon fiber 3K plain cloth for later use;
then, mixing polyether ketone and phenolic resin to obtain an impregnation liquid, wherein the mass fraction of the polyether ketone in the impregnation liquid is 3%;
and finally, impregnating the cut carbon fiber 3K plain cloth by using an impregnating solution to obtain a fiber/elastomer modified phenolic resin composite layer.
9. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform according to claim 4, wherein the method for preparing the short fiber strengthening interface layer comprises the following steps:
(1) ultrasonically dispersing aramid fibers with the length of 2-3cm in absolute ethyl alcohol to obtain short fiber dispersion liquid;
(2) diluting the obtained short fiber dispersion liquid by using absolute ethyl alcohol until each 1Kg of ethanol solution contains 10g of aramid fiber, and pulping the solution by using a mortar method to form suspension;
(3) using a paper making device to carry out pulp fishing on the suspension liquid, evenly interweaving aramid fibers on the paper fishing device into a sheet-shaped film, squeezing, and drying to obtain the aramid fibers with the density of 10g/cm2The short fibers strengthen the interfacial layer film.
10. The method for preparing the composite board for the surrounding wall of the living area of the ocean platform as claimed in claim 4, wherein the epoxy resin adhesive film is a product of type J-116 or J-99 produced by the institute of chemical industry in Heilongjiang province.
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