CN113736216A - Lightweight composite board for multi-purpose equipment and preparation method thereof - Google Patents

Lightweight composite board for multi-purpose equipment and preparation method thereof Download PDF

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Publication number
CN113736216A
CN113736216A CN202111133251.3A CN202111133251A CN113736216A CN 113736216 A CN113736216 A CN 113736216A CN 202111133251 A CN202111133251 A CN 202111133251A CN 113736216 A CN113736216 A CN 113736216A
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Prior art keywords
honeycomb
filling
layer
light
filling material
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CN202111133251.3A
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CN113736216B (en
Inventor
王婼楠
吴亚琪
王文波
全俊成
伍秘
尚建勋
马玉梅
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Jiangsu Junyuan New Material Co ltd
Shanghai Junhui New Material Technology Co ltd
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Jiangsu Junyuan New Material Co ltd
Shanghai Junhui New Material Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of 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
    • B32B27/12—Layered products comprising a layer of synthetic resin 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • 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
    • B32B3/10—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 discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—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 discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • 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
    • B60—VEHICLES IN GENERAL
    • B60F—VEHICLES FOR USE BOTH ON RAIL AND ON ROAD; AMPHIBIOUS OR LIKE VEHICLES; CONVERTIBLE VEHICLES
    • B60F5/00—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media
    • B60F5/02—Other convertible vehicles, i.e. vehicles capable of travelling in or on different media convertible into aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C35/00—Flying-boats; Seaplanes
    • B64C35/008—Amphibious sea planes
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B32B2260/023—Two or more layers
    • 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
    • B32B2262/0253—Polyolefin 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
    • B32B2262/0261—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
    • B32B2262/101—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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical 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
    • 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
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)

Abstract

The application relates to a lightweight composite board for a multi-purpose apparatus, which is prepared by adopting different composite processes of a honeycomb filler core material and various skin materials. This light composite sheet can be used for aircraft part, fields such as unmanned aerial vehicle under water, satisfies the user demand, and honeycomb filled structure size is stable, and density is even, and mechanical properties, anti flame retardant property, anti moisture absorption can be good.

Description

Lightweight composite board for multi-purpose equipment and preparation method thereof
Technical Field
The invention belongs to the field of composite materials, and relates to a lightweight composite board for a multi-purpose apparatus and a preparation method thereof.
Background
With the expansion of the application of submersible vehicles and sea-air multi-purpose equipment, the development is going to be complicated and multifunctional. The application requirements of various complex working conditions are difficult to meet by using materials in a single field.
The current requirement that the sky lightweight material is difficult to reach the pressure, the moisture absorption and other aspects of the ocean is met. The requirements of the ocean on pressure intensity, moisture absorption and the like are met, and the requirements of the sky on weight reduction are not easily met. Although the aramid paper honeycomb material, the foam material, the fiber material or the metal which are commonly used at present have advantages, the aramid paper honeycomb material, the foam material, the fiber material or the metal can not simultaneously meet the use requirements when being used in the field of sky and underwater habitation, and has certain technical defects:
1. the aramid fiber paper honeycomb composite material has excellent performances of light weight, high strength, flame retardance, environmental protection, corrosion resistance, fatigue resistance and the like, and has incomparable advantages in various aspects of effective weight reduction, corrosion reduction, noise improvement, damping and shock absorption and the like. But it has some disadvantages in high pressure and moisture absorption resistance in marine environment.
2. Although foams meet the requirements of the ocean for moisture absorption, the pressures to which they can withstand are relatively limited.
3. Although the fiber reinforced resin composite material can meet the requirements of high pressure, moisture absorption and the like, the fiber reinforced resin composite material is relatively insufficient in light weight and high in cost compared with a sandwich structure.
4. The metal material is not conducive to weight reduction on the one hand, and is easily corroded on the other hand.
5. When the equipment operates underwater, if the outer skin is damaged, water enters the middle core material and is difficult to remove, and if the outer skin is frozen in low temperature, the part structure is broken, and the requirements of marine environment are difficult to meet.
The composite material of this application can effectively be used for aircraft part, can also be used for the unmanned aerial vehicle field under water, satisfies the user demand of the equipment material of dwelling more simultaneously, and the honeycomb filler material stable in size, density is even, and mechanical properties, anti flame retardant ability, anti moisture absorption can be good.
Disclosure of Invention
The current requirement that the sky lightweight material is difficult to reach the pressure, the moisture absorption and other aspects of the ocean is met. The requirements of the ocean on pressure intensity, moisture absorption and the like are met, and the requirements of the sky on weight reduction are not easily met.
In order to solve at least one of the technical problems, the application provides a lightweight composite board for a multi-purpose apparatus, aramid fiber honeycombs are filled and treated by adopting lightweight fillers to serve as core materials, and the composite lightweight board is prepared by adopting different composite processes with various skin materials.
Compared with a metal material, the composite light plate is lighter in weight and corrosion resistant; compared with the composite materials such as pure aramid fiber honeycombs, foams and the like, the compression resistance and the moisture absorption resistance of the composite materials are greatly improved; compared with a pure resin-based composite material, the composite material has lighter weight; can better meet the requirements of the multi-purpose equipment on light weight, moisture absorption resistance, high pressure, corrosion resistance, fatigue resistance and cost, and promote the optimization and upgrade of the equipment.
According to the method, the honeycomb filling light material is used as the core material, and the composite material plate is prepared by adopting different composite processes with various skin materials.
The preparation method of the composite lightweight board comprises the following steps: firstly, filling and curing the aramid fiber honeycomb by adopting a light filling material to prepare a honeycomb filling material with a certain density. The light filling material has a density of 0.4-0.8g/cm3The epoxy-based filler consists of epoxy resin, glass beads and other fillers.
Epoxy resin in the epoxy-based filler: glass beads: the mass ratio of other fillers is (12-16): (4-8):1, and the other fillers are selected from fumed silica or honeycomb powder. Preferably, the epoxy resin: glass beads: the mass ratio of other fillers is (12-14): (4-6):1, preferably, the weight ratio of epoxy resin: glass beads: the mass ratio of other fillers is 14:5: 1.
Then, a thermosetting or thermoplastic skin composite material (a prefabricated body formed by a thermoplastic material and a fabric, wherein a part of the fabric is exposed to be used as an adhesive surface) and an adhesive layer are directly laminated on the upper surface and the lower surface of the honeycomb filling material, and the honeycomb filling material is compounded (hot pressing, vacuum bag pressing and autoclave). Finally, demoulding and trimming to obtain the lightweight composite board for the multi-purpose equipment.
Such as: the thermoplastic composite material preform can be prepared first, and then the preform can adopt co-curing (preform + adhesive film + honeycomb filler + adhesive film + preform hot-press molding) and room temperature composite cementing (preform + room temperature curing adhesive + honeycomb filler + room temperature curing adhesive + preform). And a vacuum flow guide process (glass fiber fabric, honeycomb filling material molding and glass fiber fabric) can also be adopted. In addition, a thermosetting prepreg material may be used as the skin material instead of the preform. Such as: and (3) forming by using the prepreg, the honeycomb filler and the prepreg (adopting hot pressing, a vacuum bag, an autoclave and the like).
Preferably, the present application provides a lightweight composite panel comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: honeycomb portion and filling portion, wherein the honeycomb portion is the aramid fiber honeycomb, and aramid fiber honeycomb cell size is 4.8-6 mm.
Furthermore, the filling part is filled with light materials with the density of 0.4-0.8g/cm3The epoxy-based filler consists of epoxy resin, glass beads and other fillers. Epoxy resin in the epoxy-based filler: glass beads: the mass ratio of other fillers is (12-16): (4-8):1, and the other fillers are selected from fumed silica or honeycomb powder. Preferably, the epoxy resin: glass beads: the mass ratio of other fillers is (12-14): 4-6): 1. More preferably, the epoxy resin: glass beads: the mass ratio of other fillers is 14:5: 1.
Because the light material is filled, the filling part is a closed block-shaped material, water cannot be soaked in the block-shaped material, and the moisture absorption resistance (namely, non-moisture absorption) of the material can meet the requirement of marine environment.
The skin layer is a prepreg or a prefabricated body layer. Prepreg is a composition of a resin matrix and reinforcement made by impregnating continuous fibers or fabrics with the resin matrix under strictly controlled conditions.
The prepreg is one or more of a glass fiber epoxy prepreg, a carbon fiber epoxy prepreg and an aramid fiber epoxy prepreg.
The prefabricated body is formed by a thermoplastic material and a fabric, wherein the thermoplastic material is one of PEEK, PEKK, PPS, PVDF, PC and PP.
The fabric is one or more of glass fiber, carbon fiber and aramid fiber fabric. The thermoplastic material skin has good impact resistance, and can meet the use requirements of airplanes and underwater vehicles.
The glue layer is a medium-temperature cured epoxy resin glue layer.
The mass ratio of the light filling material to the aramid fiber honeycomb is 5:1-13:1, the thickness of the glue layer is 0.1-0.5mm, the thickness of the skin is 0.8-2mm, and the thickness of the middle honeycomb filling layer is 10-50 mm.
The application also provides a preparation method of the lightweight composite board for the multi-purpose equipment, which comprises the following steps:
1) the density is 0.4-0.8g/cm3The light filling material of the aramid fiber honeycomb (the size of the aramid fiber honeycomb cell is 4.8-6mm, and the density is 32-48Kg/m3) Filling and curing are carried out, the pressure is controlled to be 0.1-0.2Mpa, the temperature is controlled to be 100-120 ℃, the time is controlled to be 40-60min, and 550Kg/m with certain density (300-550 Kg/m) is prepared3) The honeycomb filler material of (3);
2) sequentially layering a medium-temperature curing epoxy adhesive film and a skin layer on the surface of the honeycomb filling material;
3) placing the laminated structure and the die in a press, and curing and molding under the conditions that the pressure is 0.3-0.5MPa, the temperature is 100-120 ℃ and the time is 60-120 min;
4) and demolding and trimming after hot-pressing curing is finished to obtain the lightweight composite board for the multi-purpose equipment.
Alternatively, the method for preparing the lightweight composite board for a multi-purpose apparatus of the present application comprises: firstly, filling and curing the aramid fiber honeycomb by adopting a light filling material to prepare a honeycomb filling material with a certain density. The light filling material has a density of 0.4-0.8g/cm3The epoxy-based filler consists of epoxy resin, glass beads and other fillers.
Epoxy resin in the epoxy-based filler: glass beads: the mass ratio of other fillers is (12-16): (4-8):1, and the other fillers are selected from fumed silica or honeycomb powder. Preferably, the epoxy resin: glass beads: the mass ratio of other fillers is (12-14): (4-6):1, most preferably 14:5: 1.
then glue is applied to the glued joint surface of the honeycomb filling material, then a thermosetting material or thermoplastic material skin (a prefabricated body formed by a thermoplastic material and a fabric, wherein part of the fabric is exposed to be used as a glued joint surface) is sequentially laid on the glue layer for compounding, and finally trimming is carried out to obtain the lightweight composite board for the multi-purpose equipment.
The adhesive layer is a room temperature curing flame-retardant epoxy resin structure adhesive layer.
Specifically, the preparation method is as follows:
1) the density is 0.4-0.8g/cm3The light filling material of the aramid fiber honeycomb (the size of the aramid fiber honeycomb cell is 4.8-6mm, and the density is 32-48 Kg/m)3) Filling and curing are carried out, the pressure is controlled to be 0.1-0.2Mpa, the temperature is controlled to be 100-120 ℃, the time is 40-60min, and 550Kg/m with certain density (300-550 Kg/m) is prepared3) The honeycomb filler material of (3);
2) applying glue on the surface of the honeycomb filling material by adopting room-temperature curing flame-retardant epoxy structural adhesive, and controlling the glue application amount to be 400-600g/m2Sequentially carrying out layer laying compounding on the skin layer material and the upper and lower surfaces of the honeycomb filler subjected to glue application;
3) and placing the laminated structure and the mould in a press, and curing and forming under the conditions of pressure of 0.1-0.2MPa, temperature of 50-60 ℃ and time of 40-60 min.
4) And demolding and trimming after curing to obtain the lightweight composite board for the multi-purpose equipment.
In addition, the lightweight composite board for the multi-purpose equipment can be obtained by laying a fiber fabric material on the honeycomb filling material and then performing resin flow guide forming by adopting a vacuum flow guide process.
Specifically, the preparation method is as follows:
1) the density is 0.4-0.8g/cm3The light filling material is used for aramid fiber honeycombs (the size of honeycomb holes is 4.8-6mm, and the density is 32-48 Kg/m)3) IntoFilling and curing are carried out, the pressure is controlled to be 0.1-0.2Mpa, the temperature is controlled to be 100-120 ℃, the time is 40-60min, and 550Kg/m with certain density (350-550 Kg/m) is prepared3) The honeycomb filler material of (3);
2) laying glass fiber fabrics on the mould, wherein the number of layers is 3;
3) then placing the honeycomb filling material on the fabric, and meanwhile, performing glass fiber fabric layering on the upper end face of the honeycomb filling material, wherein the number of layers is 3;
4) laying auxiliary materials such as demolding cloth, a flow guide net, a vacuum bag and the like on the fabric;
5) vacuumizing the part, and introducing the prepared flame-retardant epoxy resin;
6) placing the guided part into an oven, and curing at 80-100 ℃ for 45-60 min;
7) and demolding and trimming the parts to obtain the lightweight composite board for the multi-purpose equipment.
In addition, the honeycomb filling material comprises a honeycomb part and a filling part, wherein the honeycomb part is an aramid fiber honeycomb, and the size of the aramid fiber honeycomb is 4.8-6 mm;
the light filling material has a density of 0.4-0.8g/cm3The epoxy-based filler consists of epoxy resin, glass beads and other fillers.
Epoxy resin in the epoxy-based filler: glass beads: the mass ratio of other fillers is (12-16): (4-8):1, and the other fillers are selected from fumed silica or honeycomb powder. Preferably, the epoxy resin: glass beads: the mass ratio of other fillers is (12-14): (4-6):1, more preferably, the epoxy resin: glass beads: the mass ratio of other fillers is 14:5: 1.
The mass ratio of the light filling material to the aramid fiber honeycomb is 5:1-13:1, preferably 7-10: 1.
the preparation method comprises the following steps:
the density is 0.4-0.8g/cm3The light filling material is used for aramid fiber honeycombs (the size of honeycomb holes is 4.8-6mm, and the density is 32-48 Kg/m)3) Filling and curing are carried out, the pressure is controlled to be 0.1-0.2Mpa, the temperature is controlled to be 100-120 ℃ and the time is controlledPreparing the honeycomb filling material with certain density for 40-60 min. On the basis, the honeycomb filling material can be used for various thermoplastic or thermosetting composite skin materials to prepare composite plates by adopting different composite processes.
Wherein, the mass ratio of the light filling material to the aramid fiber honeycomb is 7: 1-10:1, and controlling the density of the honeycomb filling material within the range of 300-3The thickness of the glue layer is controlled to be 0.1-0.5mm, the thickness of the skin is controlled to be 0.8-2mm, and the thickness of the middle filling honeycomb layer is controlled to be 10-50 mm. The prepared light composite board material not only has the advantages of light weight, high strength, flame retardance, environmental protection, corrosion resistance, light weight, corrosion reduction and the like, but also has the characteristics of high pressure, strong hygroscopicity and the like in the marine environment, and has mechanical properties and use requirements.
The honeycomb filling layer has certain influence factors on the final performance of the composite board, the aramid honeycomb filling light filler is adopted to be cured to obtain the core material, and the strength and moisture absorption resistance requirements of the aramid honeycomb are improved by adjusting the type and the amount of the light filler and the filling and curing process.
If the amount of the light filler is too much, the composite board has poor light effect; if the amount of the light filler is too small, the strength of the honeycomb is not effectively improved, the moisture absorption resistance can not be greatly improved, and the underwater operation of the submersible vehicle is not facilitated.
In the light filler, the epoxy resin is used as a polyhydroxy component, and the light filler is chemically active, can be cured and crosslinked to generate a net structure and has better bonding strength and chemical resistance; the glass beads have the advantages of light weight, low heat conduction, higher strength, good chemical stability and the like; according to the application, the epoxy resin and the glass beads are compounded and used, a small amount of other fillers are added, and the optimal compounding ratio and density range are obtained by adjusting the dosage ratio of the components, so that the components of the light filler play a synergistic effect, a closed block-shaped material is formed after filling, water cannot be impregnated in the material, the stability, the strength and the moisture absorption resistance of the honeycomb can be improved while the material is lightened.
The light composite board has light weight and high compressive strength, can be effectively used for aerial aircraft parts, and can meet the use requirements of underwater vehicle parts, even if the skin is damaged, water cannot soak the honeycomb and cannot be discharged easily due to the action of the filling material, so that the problem of icing and damaging the part structure is generated, and the light composite board can completely meet the requirements of marine environments.
Compared with a metal material, the composite light plate prepared by filling the honeycomb material core material has lighter weight and corrosion resistance; compared with the composite materials such as pure aramid fiber honeycombs, foams and the like, the compression resistance and the moisture absorption resistance of the composite materials are greatly improved; compared with a pure resin-based composite material, the composite material has lighter weight and low cost; can better meet the requirements of the multi-purpose equipment on light weight, moisture absorption resistance, high pressure, corrosion resistance, fatigue resistance and cost, and promote the optimization and upgrade of the equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the application and together with the description serve to explain the principles of the application.
Fig. 1 is a schematic view of the structure of the lightweight composite panel of example 1.
Fig. 2 is a schematic view of the structure of the honeycomb portion and the filling portion.
FIG. 3 is a process flow diagram of the present application.
Fig. 4 shows a honeycomb filled with a lightweight filler according to example 1.
Figure 5 shows the honeycomb filler material of example 1 after curing.
Fig. 6 is a schematic illustration of example 3 composite panel preparation.
In the figure:
1. middle honeycomb filling layer 2, adhesive layer 3, skin layer 4, honeycomb part 5 and filling part
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
A composite lightweight material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: the composite material comprises a honeycomb part and a filling part, wherein the honeycomb part is an aramid honeycomb, the filling part is filled with light filler, an adhesive layer is a medium-temperature curing epoxy adhesive film, and a skin layer is a prefabricated body consisting of thermoplastic material PC and fabric. The preparation method comprises the following steps:
1) and a light filling material (density of 0.5 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48Kg/m3Preparation of a catalyst having a viscosity of 400Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 7: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 14:5: 1;
2) sequentially layering a medium-temperature cured epoxy film, a glass fiber fabric and a thermoplastic PC prefabricated body on the surface of the honeycomb filling material;
3) and placing the laminated structure and the die in a press, and curing and molding under the conditions of 0.3MPa of pressure, 120 ℃ and 60 min.
4) And demolding and trimming after hot-pressing curing is finished to obtain the lightweight composite board for the multi-purpose equipment.
Example 2
A lightweight composite material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: the composite material comprises a honeycomb part and a filling part, wherein the honeycomb part is an aramid honeycomb, the filling part is filled with light filler, an adhesive layer is a room-temperature curing epoxy adhesive film, and a skin layer is a prefabricated body consisting of thermoplastic material PVDF and fabric. The preparation method comprises the following steps:
1) and a light filling material (density of 0.7 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48Kg/m3Prepared to have a density of 500Kg/m3The pressure of the honeycomb filling material is controlled to be 0.1MPa, the temperature is controlled to be 120 ℃, and the time is 60 min; the mass addition ratio of the light filling material to the aramid fiber honeycomb is 8: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 12:5: 1;
2) applying glue on the surface of the honeycomb filling material by adopting room-temperature curing flame-retardant epoxy structural glue, wherein the glue application amount is 400g/m2Sequentially carrying out layer laying and compounding on the glass fiber fabric, the thermoplastic PVDF prefabricated body and the glued honeycomb filling material;
3) placing the layered structure and the die in a press, and curing and molding under the conditions of 0.1MPa of pressure, 60 ℃ and 60 min;
4) and demolding and trimming after curing to obtain the lightweight composite board for the multi-purpose equipment.
Example 3
A lightweight composite material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: honeycomb portion and filling portion, wherein the honeycomb portion is aramid fiber honeycomb, and filling portion fills lightweight filler. The method comprises the following specific steps:
1) and a light filling material (density of 0.6 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared to have a density of 450Kg/m3The pressure of the honeycomb filling material is controlled to be 0.15MPa, the temperature is controlled to be 120 ℃, and the time is 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 10: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 14:5: 1;
2) laying glass fiber fabrics on a mould, wherein the number of layers is 3, then placing a honeycomb filling material on the fabrics, and simultaneously laying the glass fiber fabrics on the upper end surface of the honeycomb filling material, wherein the number of layers is 3; finally laying auxiliary materials such as demoulding cloth, a flow guide net, a vacuum bag and the like on the fabric;
3) vacuumizing the part and introducing the prepared flame-retardant epoxy resin;
4) placing the guided part into an oven, and curing for 45min at 80 ℃;
5) and demolding and trimming the parts to obtain the lightweight composite board for the multi-purpose equipment.
Example 4
A composite lightweight material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: honeycomb portion and filling portion, wherein the honeycomb portion is the aramid fiber honeycomb, and filling portion fills light filler, and the glue film is the medium temperature solidification epoxy glue film, and the skin layer is the prefabricated body that comprises thermoplastic material PEEK and fabric. The preparation method comprises the following steps:
1) and a light filling material (density of 0.6 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared with a concentration of 510Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.3MPa and the temperature of 120 ℃ for 80 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 12: 1; epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 14:5: 1;
2) sequentially layering a medium-temperature cured epoxy adhesive film, a glass fiber fabric and a thermoplastic PEEK prefabricated body on the surface of the honeycomb filling material;
3) placing the laminated structure and the die in a press, and curing and molding under the conditions of 0.5MPa of pressure, 100 ℃ and 80 min;
4) and demolding and trimming after hot-pressing curing is finished to obtain the lightweight composite board for the multi-purpose equipment.
Example 5 (Room temperature)
A lightweight composite material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: honeycomb portion and filling portion, wherein the honeycomb portion is the aramid fiber honeycomb, and filling portion fills light filler, and the glue film is room temperature cured epoxy membrane, and the covering is the preform, and the preform comprises thermoplastic material PP and fabric. The preparation method comprises the following steps:
1) and a light filling material (density of 0.6 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared to have a density of 550Kg/m3The pressure of the honeycomb filling material is controlled to be 0.2MPa, the temperature is controlled to be 110 ℃, and the time is 60 min; the mass addition ratio of the light filling material to the aramid fiber honeycomb is 9: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 12:5: 1;
2) applying glue on the surface of the honeycomb filling material by adopting room-temperature curing flame-retardant epoxy structural adhesive, wherein the glue application amount is 430g/m2Sequentially carrying out layer laying and compounding on the glass fiber fabric, the thermoplastic PP prefabricated body and the glued honeycomb filler;
3) placing the laminated structure and the die in a press, and curing and molding under the conditions of pressure of 0.2MPa, 80 ℃ and 60 min;
4) and demolding and trimming after curing to obtain the lightweight composite board for the multi-purpose equipment.
Example 6
1) And a light filling material (density of 0.56 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared with a pressure of 650Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 13: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of the fumed silica as the other filler is 14:5: 1.
The other steps are the same as in example 1.
Example 7
1) And a light filling material (density of 0.55 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48g/cm3Preparation of a catalyst having a viscosity of 300Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 5: 1.
epoxy resin in the light filling material: glass beads: the mass ratio of the fumed silica as the other filler is 14:5: 1.
The other steps are the same as in example 1.
Example 8
1) And a light filling material (density of 0.65 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared with a concentration of 550Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 7: 1.
epoxy resin in the light filling material: glass beads: the mass ratio of the fumed silica as the other filler is 10:9: 1.
The other steps are the same as in example 1.
Example 9
1) And a light filling material (density of 0.65 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48kg/m3Prepared with a concentration of 550Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 7: 1.
epoxy resin in the light filling material: glass beads: the mass ratio of the fumed silica as the other filler is 18:3: 1.
The other steps are the same as in example 1.
Example 10 (skin layer being prepreg layer)
A composite lightweight material comprising: 1-middle honeycomb filling layer, 2-adhesive layer and 3-skin layer; wherein the middle honeycomb filling layer comprises: honeycomb portion and filling part, wherein the honeycomb portion is the aramid fiber honeycomb, and the light filler is filled to filling part, and the glue film is medium temperature curing epoxy glue film, and the cover layer preimpregnation material is carbon fibre epoxy preimpregnation material. The preparation method comprises the following steps:
1) and a light filling material (density of 0.5 g/cm)3) Filling and curing aramid fiber honeycombs, wherein the sizes of the cells of the aramid fiber honeycombs are 4.8mm, and the density is 48Kg/m3Preparation of a catalyst having a viscosity of 400Kg/m3The honeycomb filling material with the density is controlled to have the pressure of 0.2MPa and the temperature of 120 ℃ for 60 min;
the mass addition ratio of the light filling material to the aramid fiber honeycomb is 7: 1;
epoxy resin in the light filling material: glass beads: the mass ratio of other fillers of fumed silica is 14:5: 1;
2) sequentially carrying out medium-temperature curing epoxy glue film and prepreg laying on the surface of the honeycomb filling material;
3) placing the layered structure and the die in a press, and curing and molding under the conditions of 0.3MPa of pressure, 120 ℃ and 60 min;
4) and demolding and trimming after hot-pressing curing is finished to obtain the lightweight composite board for the multi-purpose equipment.
Example 11 (Honeycomb Structure alone)
A honeycomb filling core material comprises a honeycomb part and a filling part, wherein the honeycomb part is an aramid honeycomb, and the size of the aramid honeycomb cells is 4.8 mm; the filling part is epoxy resin: glass beads: other fillers honeycomb powder is 14:5:1, the mass ratio of the filling part to the honeycomb part is 8: 1.
the preparation method comprises the following steps:
using a light filling material (density 0.6 g/cm)3) Filling and fixing aramid fiber honeycombsThe size of the aramid fiber honeycomb cells is 4.8mm, and the density is 48kg/m3Prepared to have a density of 500Kg/m3The honeycomb filling material is prepared by controlling the pressure to be 0.1MPa and the temperature to be 120 ℃ for 60 min.
Comparative example 1
The preparation method of the composite light material comprises the following steps:
1) sequentially layering a prefabricated body of a medium-temperature curing epoxy adhesive film, a glass fiber fabric and a thermoplastic material PC on the surface of the pure aramid fiber honeycomb material;
2) and placing the laminated structure and the die in a press, and curing and molding under the conditions of 0.3MPa of pressure, 120 ℃ and 60 min.
3) And demolding and trimming after hot pressing and curing are completed to obtain the thermoplastic light composite board.
Comparative example 2
The preparation method of the composite light material comprises the following steps:
1) sequentially spreading a medium-temperature cured epoxy adhesive film, a glass fiber fabric and a thermosetting prepreg on the surface of the pure aramid fiber honeycomb material;
2) and placing the laminated structure and the die in a press, and curing and molding under the conditions of 0.3MPa of pressure, 120 ℃ and 60 min.
3) And demolding and trimming after hot pressing and curing to obtain the thermosetting light composite board.
And (3) performance detection:
examples 1-9 preparation of lightweight composite panels and comparative examples methods for measuring various parameters:
moisture absorption rate: and (4) soaking the composite board in water for 24 hours, taking out, measuring the weight, and calculating the moisture absorption rate by increasing the weight.
The falling ball experiment process: the steel ball impacts the surface of the sample from a 2m high altitude free fall, and 5 depression depths are recorded. The steel ball has a diameter of 50mm and a weight of 500 g.
And (3) corrosion resistance testing: the composite plate was placed in seawater, taken out for 48 hours, and the surface state was observed.
Table 1 characterization results of examples 1-10 and comparative example composite panels
Figure BDA0003281271740000131
The embodiment shows that the middle of the light core material honeycomb which is not filled is of a cavity structure, if skin is damaged, water can enter honeycomb holes and is difficult to remove, the moisture absorption resistance is poor, and if the skin is damaged, a low temperature can freeze and break the structure. The composite light board prepared by filling the honeycomb material core material has the advantages that the middle part is the closed block material, water cannot be soaked in the closed block material, and the moisture absorption resistance can meet the requirements of marine environments.
The addition amount of the light filler is also considered, and if the light filler is excessive, the density of the filled honeycomb is higher; if the light filling material is too little, the density is too light, and the compressive strength data effect is not good, it can be seen that the light filling material: the honeycomb ratio is 7-10: preferably within the range of 1; similarly, if the proportion of the filler is not proper, the compression resistance effect of the composite material is not good, and the requirement of long-term aerial and underwater multi-dwelling operation cannot be met.
Moreover, the composite light board prepared by filling the honeycomb material core material is lighter in weight and corrosion resistant compared with a metal material; compared with the composite materials such as pure aramid fiber honeycombs, foams and the like, the compression resistance and the moisture absorption performance of the composite materials are greatly improved; can better satisfy the submergence device and the equipment of dwelling more and perch to lightweight, anti hygroscopicity, high pressure, corrosion-resistant, promote to equip optimization and upgrade.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. The honeycomb filling material is characterized by comprising a honeycomb part and a filling part, wherein the honeycomb part is a regular hexagonal aramid honeycomb, and the size of cells of the aramid honeycomb is 4.8-6 mm; the filling part is filled with light materials, and the density is 0.4-0.8g/cm3The epoxy-based filler is composed of epoxy resin, glass beads and other fillers.
2. The honeycomb filler material of claim 1, wherein the epoxy-based filler comprises an epoxy resin: glass beads: the mass ratio of other fillers is (12-16): (4-8):1, and the other fillers are selected from fumed silica or honeycomb powder; the mass ratio of the light filling material to the aramid fiber honeycomb is 5:1-13:1, preferably 7-10: 1.
3. the preparation method of the honeycomb filling material as claimed in claim 1, wherein the light filling material is used for filling and curing the aramid fiber honeycomb, and the honeycomb filling material with a certain density is prepared by controlling the pressure of 0.1-0.2Mpa, the temperature of 100-120 ℃ and the time of 40-60min in the filling process.
4. A lightweight composite panel for a habitat device, said lightweight composite panel comprising: the middle honeycomb filling layer (1), the adhesive layer (2) and the skin layer (3); wherein the middle honeycomb filling layer (1) is sequentially paved with an adhesive layer (2) and a skin layer (3) from top to bottom; the intermediate honeycomb filling layer (1) comprises: the honeycomb structure comprises a honeycomb part (4) and a filling part (5), wherein the honeycomb part (4) is an aramid honeycomb, and the size of the aramid honeycomb cell is 4.8-6 mm; the filling part (5) is filled with light materials, and the density of the light materials is 0.4-0.8g/cm3The skin layer (3) is a prepreg layer or a prefabricated layer.
5. The lightweight composite panel according to claim 4, wherein said epoxy-based filler is composed of an epoxy resin: glass beads: and the other fillers are selected from fumed silica or honeycomb powder according to the mass ratio of (12-16) to (4-8) to 1. Preferably, the epoxy resin: glass beads: the mass ratio of other fillers is (12-14): 4-6): 1.
6. The light weight composite panel of claim 4, wherein the preform is formed from a thermoplastic material and a fabric, the thermoplastic material being one or more of PEEK, PEKK, PPS, PVDF, PC, PP; the fabric is selected from one or more of glass fiber, carbon fiber and aramid fiber fabric; the prepreg is one or more of a glass fiber epoxy prepreg, a carbon fiber epoxy prepreg and an aramid fiber epoxy prepreg.
7. The lightweight composite board according to claim 4, wherein the thickness of the glue layer is 0.1-0.5mm, the thickness of the skin layer is 0.8-2mm, and the thickness of the honeycomb filler layer is 10-50 mm.
8. A method for preparing a lightweight composite board for a multi-purpose apparatus as defined in claim 4, comprising:
(1) filling and curing the aramid fiber honeycomb by adopting a light filling material to prepare a honeycomb filling material; the light filling material has a density of 0.4-0.8g/cm3The epoxy-based filler of (a);
(2) directly laying the adhesive layer and the skin layer on the upper surface and the lower surface of the honeycomb filling material in sequence;
(3) and carrying out composite curing molding on the mixture;
(4) and demolding and trimming to obtain the lightweight composite board for the multi-purpose equipment.
9. The preparation method of claim 8, wherein in the step (1), the mass ratio of the light filling material to the aramid honeycomb is 5:1-13: 1; the pressure is 0.1-0.2Mpa, the temperature is 100-; the curing and forming conditions of the step (3) are that the pressure is 0.1-0.5MPa, the temperature is 50-120 ℃, and the time is 40-120 min; the adhesive layer is a medium-temperature cured epoxy resin adhesive layer or a room-temperature cured flame-retardant epoxy structure adhesive layer.
10. Use of a lightweight composite board according to claim 4 for underwater drone, submersible vehicle or airborne aircraft components.
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