CN106042524A - Plate material, multilayer composite plate material with plate material, and preparation method of plate material - Google Patents
Plate material, multilayer composite plate material with plate material, and preparation method of plate material Download PDFInfo
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- CN106042524A CN106042524A CN201610415808.5A CN201610415808A CN106042524A CN 106042524 A CN106042524 A CN 106042524A CN 201610415808 A CN201610415808 A CN 201610415808A CN 106042524 A CN106042524 A CN 106042524A
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- sheet material
- panel
- multilayer composite
- prepreg
- base plate
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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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal 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
- 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
- B32B15/08—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 of synthetic resin
- B32B15/092—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 of synthetic resin comprising epoxy resins
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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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
- B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by 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 form; Layered products 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1018—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 using only vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/08—Impregnating
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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
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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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
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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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
- 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
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/552—Fatigue strength
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
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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
- B32B2605/00—Vehicles
- B32B2605/08—Cars
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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
- B32B2605/00—Vehicles
- B32B2605/10—Trains
Abstract
The invention relates to a plate material, a multilayer composite plate material with the plate material, and a preparation method of the plate material. The plate material is a multilayer composite plate formed through hot-pressing forming of an aluminum alloy layer, a prepreg layer made by mixing fiberglass and epoxy resin, and an aluminum alloy layer from bottom to top; the multilayer composite plate material comprises a surface plate, a core layer and a bottom plate, and the core layer is connected between the surface plate and the bottom plate; both the surface plate and the bottom plate employ the plate material; the core layer is made with fiberglass reinforced melamine foam material. The plate material is of multilayer structure and has an interfacial layer, thereby enabling gradually reduced load, increased acoustic impedance ratio, improved impact resistance and fatigue resistance and improved acoustic insulation.
Description
Technical field
The invention belongs to technical field of structural materials, relate to the sheet material of light structures, specifically, relate to a kind of sheet material,
Multilayer composite board containing sheet material and preparation method thereof.
Background technology
Along with development and the progress of science and technology of technology of track traffic, owing to having lightweight, high intensity, easy-formation and assembly
The features such as structure function integration, novel high polymer material, especially high-performance composite materials are more and more applied to modern rail
Road field of traffic.High-performance composite materials have become the focus of field of track traffic investigation of materials at present, and therefore, research and development lightweight is high
Strong advanced composite material replaces current material, is of great significance having with the lightweight realizing vehicle.
Honeycomb sandwich board as important lightweighting materials, have that specific strength is high, lightweight, rigidity big, good stability, every
The advantages such as sound is heat insulation, are widely used to Aero-Space, building field and field of track traffic at present.Battenboard is by top and bottom
Plate and middle core composition, be integrally formed rigid structure by adhesive by upper and lower panel and core splicing, and middle core is honeybee
Nest shape, is similar to the web of I-beam, can bear load and the cross shear of panel transmission.Core kind mainly includes
Nomex honeycomb, aluminum honeycomb and glass cloth honeycomb, the most domestic aluminum cellular application is the most extensive, in domestic track train internal structure,
The structure major parts such as floor, wallboard, top board be application aluminum honeycomb panel, its structure typically use upper strata aluminium alloy panel 1., middle level
Aluminum honeycomb 2., lower floor's aluminium alloy panel 3. three-decker, see Fig. 1.
The most still there are some problems in aluminum honeycomb panel material: (1) bears the performance of concentration of local load, anti-impact
Hit and fatigue performance is poor.In order to reduce weight, during aluminum cellular application, all use single sandwich.When bearing uniform load
Time, aluminum honeycomb panel can provide good bearing capacity, gives full play to eyelid covering and the respective advantage of honeycomb core.If but running into bigger
When concentration of local load or shock loading, the destruction that may produce panel is the most sagging.In order to solve this problem, publication number
Chinese patent patent application for CN102080439A discloses a kind of composite honeycomb sandwich structure floor, including upper eyelid covering, honeybee
Nest interlayer and lower eyelid covering, honeycomb interlayer is made up of upper honeycomb core and lower honeycomb core, between upper honeycomb core and lower honeycomb core in dress
Eyelid covering, upper eyelid covering is contained in above honeycomb core, and lower eyelid covering is contained in below lower honeycomb core.This application for a patent for invention is according to concentration
The transmission of load or impact load along highly carrying out the scattered characteristic of load, improves the anti-concentration of material from the downward eyelid covering of upper eyelid covering
Load and impact loads property.(2) the light-weighted development trend of rail vehicle requires that the density of aluminum honeycomb panel material needs further
Reduce.(3) hollow structure that aluminum honeycomb panel material is special, causes the sound-insulating and heat-insulating effect of vertical direction far below horizontal direction.(4)
When aluminum honeycomb panel material is by the shearing force of horizontal direction, easily cause panel and the stripping of core or gross distortion.
Therefore, a kind of board of research and development so that it is there is lighting, it is possible to shock resistance, endurance, in vertical direction sound insulation
Deformation heat insulation, the most anti-shearing, and it is applied to rail traffic vehicles, tool is of great significance.
Summary of the invention
Present invention aims to the problems referred to above that aluminum honeycomb panel material exists, it is provided that a kind of lightweight, shock resistance,
Fatigue proof sheet material, multilayer composite board containing sheet material and preparation method thereof.
According to one embodiment of the invention, it is provided that a kind of sheet material, described sheet material is from top to bottom according to aluminium alloy layer, by glass
The multilayer composite sheet that glass fiber and the prepreg of epoxy resin mixing manufacture, aluminium alloy layer are hot-forming.Sheet material
When bearing concentrfated load and shock loading, load sequentially passes through aluminium alloy, prepreg, aluminium alloy, after multistage transmission gradually
Weaken, bed boundary also functions to certain peptizaiton for stress, it is to avoid conventional aluminum sheet alloy is destroyed or sink
Situation occurs, thus improves impact resistance and the fatigue durability of sheet material.Owing to sheet material existing bed boundary, when sound passes through sheet material
During transmission, pantostrat interface can carry out multipath reflection to noise, thus increases the acoustic impedance ratio of interlayer, improves the sound insulation of sheet material
Performance.Simultaneously because prepreg uses glass fibre and epoxy resin mixing manufacture to form, sheet material of the present invention compares same size
Aluminum alloy plate materials lightweight.
As preferably, according in the sheet material described in the above embodiment of the present invention, the content of prepreg epoxy resin
For 30wt%-40wt%, the beneficially epoxy resin dipping to glass fibre.
As preferably, according in the sheet material described in the above embodiment of the present invention, described glass fibre uses filament strength
For the high strength glass fiber of 4500-5000MPa, further enhancing the sheet material ability to bear for stress.
As preferably, according in the sheet material described in the above embodiment of the present invention, the thickness of sheet material is 0.8-1.3mm,
In the case of ensureing sheet material ability to bear, keep the lighting of sheet material.
According to one embodiment of the invention, it is provided that a kind of preparation of plates method, its preparation process is:
(1) aluminum alloy surface carries out anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, at aluminum in 24 hours
Alloy surface coating butadiene primer；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) sheet material is placed in vacuum hotpressing tank, evacuation, vacuum >=0.09MPa；
(5) pressure reduction up and down loaded in vacuum hotpressing tank is 1.6 ± 0.2MPa, and temperature rises to 160 DEG C, and heat-insulation pressure keeping is in advance
Leaching material is fully cured；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
The sheet material prepared by above-mentioned preparation of plates method is compared with sheet material prepared by traditional method, in sheet material adjacent two
Bonding quality between Ceng is good, and in solidification process, bubble-free produces.
Sheet material of the present invention can well compatible metal material and the advantage of macromolecular material, have more excellent than aluminium alloy
Different shock resistance, fatigue performance, simultaneously can loss of weight.If being applied to the panel material of battenboard, can well carry
The shock resistance fatigue durability of high battenboard, realizes the lightweight of sheet material simultaneously.
The core of existing aluminum honeycomb panel material is typically orthohexagonal Aluminum Hollow honeycomb, and it is with panel with base plate bonding
Area is the least, only about the 0.4% of panel so that aluminum honeycomb panel material peel strength is greatly affected.Work as gluing
The when that agent performance being slightly decreased or aluminum honeycomb panel material makes moist, panel and the disengaging of core or stripping easily occur；Simultaneously when
When sheet material is subject to the bigger shearing force being parallel to sheet material, the stripping of core and panel also can occur.If able to develop one
Plant intensity light sandwich material high, good toughness and substitute aluminium alloy core, it is also possible to reduce the weight of honeycomb board further, thus
Substitute existing honeycomb board and realize the lightweight of vehicle.
Melamine foamed plastic is a kind of pole light material, has sufficient perforate three-dimensional net structure system, and its density is
8-30kg/m3, percent opening is up to more than 99%, and its heat conductivity is only 0.0315W/ (m k), three-dimensional net structure after testing
The convection heat transfer' heat-transfer by convection making air is effectively blocked, and improves the heat-proof quality of multilayer composite board, simultaneously because three-dimensional network
Draw ratio between 10 and 20, make sound wave can easily and effectively enter melamine foamed plastic deep layer and be converted into the vibration of network
Can, thus be consumed and sponge.
According to one embodiment of the invention, it is provided that a kind of multilayer composite board, including panel, sandwich layer and base plate, sandwich layer is even
It is connected between panel and base plate；Panel and base plate all use sheet material recited above；Sandwich layer is glass fiber reinforcement tripolycyanamide
Foamed materials.Multilayer composite board sandwich layer of the present invention selects glass fiber reinforcement melamine foamed plastic, on the one hand by regulation glass
Glass fiber content in melamine foamed plastic can prepare the core of varying strength and density, thus meets different automobile types or car
The use requirement at position, on the other hand can be more preferable with panel and base plate stickiness, sandwich layer and panel and the laminating journey of base plate
Degree is more than 99%, it is to avoid the coming off and warpage of sheet material.Panel and base plate use sheet material described above, make multilamellar of the present invention multiple
Plywood material has many bed boundarys, and when bearing concentrfated load and shock loading, load is through panel, sandwich layer, base plate Multi-stage transmission
Passing, more more than the transmission level of sheet material described above, the effect that load gradually weakens becomes apparent from, and bed boundary is divided for stress
Dissipating effect higher, shock resistance and the fatigue performance of multilayer composite board are further enhanced.With existing aluminum honeycomb panel material phase
Ratio, weight can alleviate 6%-30%.
As preferably, according in the multilayer composite board described in the above embodiment of the present invention, glass fiber reinforcement trimerization
In cyanamide foamed materials, the content of glass fibre is 10wt%-15wt%, it is simple to glass fibre is impregnated by epoxy resin, carries
Immersion to glass fibre of high epoxy resin.
As preferably, according in the multilayer composite board described in the above embodiment of the present invention, panel and the thickness of base plate
It is 0.8-1.3mm.
As preferably, according in the multilayer composite board described in the above embodiment of the present invention, the thickness of sandwich layer is 15-
18mm。
According to one embodiment of the invention, it is provided that the preparation method of a kind of multilayer composite board, the steps include:
(1) preparation of plates method described above is used to make panel and base plate；
(2) by adhesive, panel, sandwich layer and base plate are bonded together according to panel, sandwich layer, the order of base plate, are formed
Multilayer composite board.
The invention have the benefit that
(1) plate construction of the present invention is simple, uses multiple structure, there is bed boundary, it is possible to gradually weaken load, increase sound
Impedance ratio, improves shock resistance and fatigue performance, and improves sound insulation value；It is provided with and is mixed system by glass fibre and epoxy resin
The prepreg made, compared with existing aluminum alloy plate materials, alleviates weight.
(2) preparation of plates method step of the present invention is simple, uses vacuum hot pressing formation, the bonding matter between each layer of sheet material
Measuring, in solidification process, bubble-free produces, it is ensured that board quality.
(3) multilayer composite board simple in construction of the present invention, lightweight, than the weight saving 6%-of existing aluminum honeycomb panel material
30%；Use multiple structure, there is bed boundary, it is possible to gradually weaken load, increase acoustic impedance ratio, improve shock resistance and endurance
Performance, and improve sound insulation value；Sandwich layer uses glass fiber reinforcement melamine foamed plastic, it is possible to make the convection heat transfer' heat-transfer by convection of air obtain
To effective retardance, improve the heat-proof quality of multilayer composite board, sound wave can be made easily and effectively to enter trimerization simultaneously
Cyanamide foam deep layer is also converted into the vibrational energy of network, thus is consumed and sponges, and further increases multilayer composite board
Sound insulation value.
(4) the manufacture method step of multilayer composite board of the present invention is simple, and panel and base plate are good with the bonding quality of sandwich layer,
In panel and base plate solidification process, bubble-free produces, and degree of fitting between sandwich layer and panel and base plate is more than 99%, it is to avoid
Coming off and warpage of panel or base plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing aluminum honeycomb panel.
Fig. 2 is the structural representation of specific embodiment of the invention sheet material.
Fig. 3 is the soundproof effect schematic diagram that the present invention is embodied as sheet material.
Fig. 4 is the structural representation of specific embodiment of the invention multilayer composite board.
In figure, 1., aluminium alloy panel, 2. aluminum honeycomb, 3., aluminium alloy panel, 1, aluminium alloy layer, 2, prepreg, 3, aluminum
Alloy-layer, 4, panel, 5, sandwich layer, 6, base plate.
Detailed description of the invention
The detailed description of the invention of the present invention is described below in conjunction with the accompanying drawings:
Specific embodiment one: seeing Fig. 2, a kind of sheet material, described sheet material is from top to bottom according to aluminium alloy layer 1, by glass
The multilayer composite sheet that the prepreg 2 of fiber and epoxy resin mixing manufacture, aluminium alloy layer 3 are hot-forming.
In the present embodiment, the content of prepreg epoxy resin is 30wt%, and beneficially epoxy resin is to glass fibre
Dipping.
In the present embodiment, in order to further enhancing the sheet material ability to bear for stress, described glass fibre uses single
Silk intensity is the high strength glass fiber of 4500MPa.
In the present embodiment, the thickness of sheet material is 0.8mm, in the case of ensureing sheet material ability to bear, keeps the light of sheet material
Matter, wherein, aluminium alloy layer uses 2024-T3 aluminium alloy plate, and size is 500mm × 500mm × 0.3mm, prepreg big
Little for 500mm × 500mm × 0.2mm.
Sheet material is when bearing concentrfated load and shock loading, and load sequentially passes through aluminium alloy, prepreg, aluminium alloy, many
Gradually weakening after level transmission, bed boundary also functions to certain peptizaiton for stress, it is to avoid conventional aluminum sheet alloy suffers
Situation about destroying or sink occurs, thus improves impact resistance and the fatigue durability of sheet material.
Seeing Fig. 3, owing to there is bed boundary in sheet material, when sound is transmitted by sheet material, pantostrat interface can be to noise
Carry out multipath reflection, thus increase the acoustic impedance ratio of interlayer, improve the sound insulation value of sheet material.
In the present embodiment, preparation of plates method step is as follows:
(1) aluminum alloy surface carries out complex acid anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, in 24 hours
Butadiene primer is coated in aluminum alloy surface；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) being placed on by sheet material in vacuum hotpressing tank, evacuation, vacuum is 0.09MPa；
(5) the upper pressure loaded in vacuum hotpressing tank is 2.2MPa, and lower pressure is 0.6MPa, and temperature rises to 160 DEG C, heat-insulation pressure keeping
It is fully cured to prepreg；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
Specific embodiment two: seeing Fig. 2, a kind of sheet material, described sheet material is from top to bottom according to aluminium alloy layer 1, by glass
The multilayer composite sheet that the prepreg 2 of fiber and epoxy resin mixing manufacture, aluminium alloy layer 3 are hot-forming.
In the present embodiment, the content of prepreg epoxy resin is 40wt%, and beneficially epoxy resin is to glass fibre
Dipping.
In the present embodiment, in order to further enhance the sheet material ability to bear for stress, described glass fibre uses monofilament
Intensity is the high strength glass fiber of 5000MPa.
In the present embodiment, the thickness of sheet material is 1.3mm, in the case of ensureing sheet material ability to bear, keeps the light of sheet material
Matter, wherein, aluminium alloy layer uses 2024-T3 aluminium alloy plate, and size is 500mm × 500mm × 0.5mm, prepreg big
Little for 500mm × 500mm × 0.3mm.
Sheet material is when bearing concentrfated load and shock loading, and load sequentially passes through aluminium alloy, prepreg, aluminium alloy, many
Gradually weakening after level transmission, bed boundary also functions to certain peptizaiton for stress, it is to avoid conventional aluminum sheet alloy suffers
Situation about destroying or sink occurs, thus improves impact resistance and the fatigue durability of sheet material.
Seeing Fig. 3, owing to there is bed boundary in sheet material, when sound is transmitted by sheet material, pantostrat interface can be to noise
Carry out multipath reflection, thus increase the acoustic impedance ratio of interlayer, improve the sound insulation value of sheet material.
In the present embodiment, preparation of plates method step is as follows:
(1) aluminum alloy surface carries out complex acid anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, in 24 hours
Butadiene primer is coated in aluminum alloy surface；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) being placed on by sheet material in vacuum hotpressing tank, evacuation, vacuum is 0.09MPa；
(5) the upper pressure loaded in vacuum hotpressing tank is 2.4MPa, and lower pressure is 0.8MPa, and temperature rises to 160 DEG C, heat-insulation pressure keeping
It is fully cured to prepreg；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
Specific embodiment three: from be embodied as unlike one, in the present embodiment, containing of prepreg epoxy resin
Amount is 35wt%, the beneficially epoxy resin dipping to glass fibre.In order to further enhancing sheet material, stress is born
Ability, described glass fibre uses filament strength to be the high strength glass fiber of 4800MPa.The thickness of sheet material is 1.0mm, is protecting
In the case of card sheet material ability to bear, keep the lighting of sheet material.
In the present embodiment, preparation of plates method step is as follows:
(1) aluminum alloy surface carries out complex acid anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, in 24 hours
Butadiene primer is coated in aluminum alloy surface；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) being placed on by sheet material in vacuum hotpressing tank, evacuation, vacuum is 0.10MPa；
(5) the upper pressure loaded in vacuum hotpressing tank is 2.0MPa, and lower pressure is 0.4MPa, and temperature rises to 160 DEG C, heat-insulation pressure keeping
It is fully cured to prepreg；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
Specific embodiment four: unlike specific embodiment one, in the present embodiment, prepreg epoxy resin
Content is 32wt%, the beneficially epoxy resin dipping to glass fibre.In order to further enhancing sheet material, stress is held
By ability, described glass fibre uses filament strength to be the high strength glass fiber of 4600MPa.The thickness of sheet material is 1.2mm,
In the case of ensureing sheet material ability to bear, keep the lighting of sheet material.
The present embodiment above-mentioned preparation of plates method step is as follows:
(1) aluminum alloy surface carries out complex acid anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, in 24 hours
Butadiene primer is coated in aluminum alloy surface；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) being placed on by sheet material in vacuum hotpressing tank, evacuation, vacuum is 0.9MPa；
(5) the upper pressure loaded in vacuum hotpressing tank is 2.6MPa, and lower pressure is 0.9MPa, and temperature rises to 160 DEG C, heat-insulation pressure keeping
It is fully cured to prepreg；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
Specific embodiment five: seeing Fig. 4, a kind of multilayer composite board, including panel 4, sandwich layer 5 and base plate 6, sandwich layer 5 is even
It is connected between panel 4 and base plate 6；Panel 4 and base plate 6 all use the sheet material in specific embodiment one；Sandwich layer is increased by glass fibre
Strong melamine foam material is made.
In the present embodiment, in glass fiber reinforcement melamine foam material, the content of glass fibre is 10wt%, just
In epoxy resin, glass fibre is impregnated, improve immersion to glass fibre of epoxy resin.
In the present embodiment, the thickness of sandwich layer is 18mm.
In the present embodiment, the preparation method of multilayer composite board is:
(1) preparing panel and base plate, owing to panel and base plate all use the sheet material in embodiment one, its preparation method is with tool
Preparation of plates method in body embodiment one；
(2) by adhesive, panel, sandwich layer and base plate are bonded together according to panel, sandwich layer, the order of base plate, are formed
Multilayer composite board.
Adhesive in the present embodiment said method uses remodeling phenolic resin glue, belongs to aviation-grade adhesive, has ratio
The cementing strength that common adhesive is higher is heat-resisting, ageing-resistant performance is more excellent.
Multilayer materials density in the present embodiment is 198kg/m3, with the density of existing aluminum honeycomb panel material at 400kg/
m3Comparing, the weight of its material is substantially reduced, it is achieved that the lightweight of material.
Under similarly experiment condition, the multilayer composite board in the embodiment of the present invention and existing aluminum honeycomb panel material are carried out
Shock resistance Experimental comparison, contrast experiment's process is as follows:
Multilayer composite board in the present embodiment is impacted, when cycle-index is at 32000 times by the impact energy using 54J
Time, starting that crackle occurs, laminate is internal there is layering, contributes to absorption and rushes technical ability；Cycle-index sheet material when 51000 lost efficacy.
Existing aluminum honeycomb panel material is impacted by the impact energy using 54J, does not haves obvious crackle, in number of shocks in impact process
When about 30000, moment lost efficacy.
From above-mentioned impact test, the shock resistance of multilayer composite board of the present invention is more notable than conventional aluminum honeycomb board
Improve.
Under similarly experiment condition, the multilayer composite board in the embodiment of the present invention and existing aluminum honeycomb panel material are carried out
Endurance Experimental comparison, contrast experiment's process is as follows:
According to the standard of ASTM E647-08, carry out multilayer composite board and existing aluminum honeycomb panel material crack growth rate pair
Than test.After aluminum honeycomb panel material crackle produces, its rate of rise almost linearly increases, and crackle increases rapidly, and fatigue behaviour is relatively
Difference.And multilayer composite board crack growth rate is considerably slower than conventional aluminum honeycomb board, only 1/10th of aluminum honeycomb panel material
Left and right.Under 20000 condition of high ground stress of experience after fatigue and cyclic, the residual strength of aluminum honeycomb panel material is about 45MPa, and this reality
Execute the residual strength of multilayer composite board in example and be about 195MPa, hence it is evident that higher than aluminum honeycomb panel material.
From above-mentioned fatigue test, the fatigue behaviour of multilayer composite board of the present invention significantly carries than conventional aluminum honeycomb board
High.
Specific embodiment six: seeing Fig. 4, a kind of multilayer composite board, including panel 4, sandwich layer 5 and base plate 6, sandwich layer 5 is even
It is connected between panel 4 and base plate 6；Panel 4 and base plate 6 all use the sheet material in specific embodiment two；Sandwich layer is by glass fibre
Strengthen melamine foam material to be made.
In the present embodiment, in glass fiber reinforcement melamine foam material, the content of glass fibre is 10wt%, just
In epoxy resin, glass fibre is impregnated, improve immersion to glass fibre of epoxy resin.
In the present embodiment, the thickness of sandwich layer is 18mm.
In the present embodiment, the preparation method of multilayer composite board is:
(1) preparing panel and base plate, owing to panel and base plate all use the sheet material in embodiment two, its preparation method is with tool
Preparation of plates method in body embodiment two；
(2) by adhesive, panel, sandwich layer and base plate are bonded together according to panel, sandwich layer, the order of base plate, are formed
Multilayer composite board.
Adhesive in the present embodiment said method uses remodeling phenolic resin glue, belongs to aviation-grade adhesive, has ratio
The cementing strength that common adhesive is higher is heat-resisting, ageing-resistant performance is more excellent.
Multilayer materials density in the present embodiment is 254kg/m3, with the density of existing aluminum honeycomb panel material at 400kg/
m3Comparing, the weight of its material is substantially reduced, it is achieved that the lightweight of material.
Under similarly experiment condition, the multilayer composite board in the embodiment of the present invention and existing aluminum honeycomb panel material are carried out
Shock resistance Experimental comparison, contrast experiment's process is as follows:
Multilayer composite board in the present embodiment is impacted, when cycle-index is at 35000 times by the impact energy using 54J
Time, starting that crackle occurs, laminate is internal there is layering, contributes to absorption and rushes technical ability；Cycle-index sheet material when 60000 lost efficacy.
Existing aluminum honeycomb panel material is impacted by the impact energy using 54J, does not haves obvious crackle, in number of shocks in impact process
When about 30000, moment lost efficacy.
From above-mentioned impact test, the shock resistance of multilayer composite board of the present invention is more notable than conventional aluminum honeycomb board
Improve.
Under similarly experiment condition, the multilayer composite board in the embodiment of the present invention and existing aluminum honeycomb panel material are carried out
Endurance Experimental comparison, contrast experiment's process is as follows:
According to the standard of ASTM E647-08, carry out multilayer composite board and existing aluminum honeycomb panel material crack growth rate pair
Than test.After aluminum honeycomb panel material crackle produces, its rate of rise almost linearly increases, and crackle increases rapidly, and fatigue behaviour is relatively
Difference.And multilayer composite board crack growth rate is considerably slower than conventional aluminum honeycomb board, only 1/10th of aluminum honeycomb panel material
Left and right.Under 20000 condition of high ground stress of experience after fatigue and cyclic, the residual strength of aluminum honeycomb panel material is about 52MPa, and this reality
Execute the residual strength of multilayer composite board about 210MPa in example, hence it is evident that higher than aluminum honeycomb panel material.
From above-mentioned fatigue test, the fatigue behaviour of multilayer composite board of the present invention significantly carries than conventional aluminum honeycomb board
High.
Above-described embodiment is used for explaining the present invention rather than limiting the invention, in spirit and the right of the present invention
In the protection domain required, any modifications and changes that the present invention is made, both fall within protection scope of the present invention.
Claims (10)
1. a sheet material, it is characterised in that: described sheet material is from top to bottom according to aluminium alloy layer, by glass fibre and epoxy resin
The multilayer composite sheet that the prepreg of mixing manufacture, aluminium alloy layer are hot-forming.
2. sheet material as claimed in claim 1, it is characterised in that: the content of prepreg epoxy resin is 30wt%-
40wt%.
3. sheet material as claimed in claim 1, it is characterised in that: described glass fibre uses filament strength to be 4500-5000MPa
High strength glass fiber.
4. sheet material as claimed in claim 1, it is characterised in that: the thickness of sheet material is 0.8-1.3mm.
5. a preparation of plates method, it is characterised in that: the steps include:
(1) aluminum alloy surface carries out anodization, enables aluminum alloy to the uniform oxide-film of Surface Creation, at aluminium alloy in 24 hours
Surface-coated butadiene primer；
(2) prepreg and the aluminium alloy after step (1) processes are carried out drying and processing, remove solvent；
(3) sheet material is laid according to the order of aluminium alloy, prepreg, aluminium alloy；
(4) sheet material is placed in vacuum hotpressing tank, evacuation, vacuum >=0.09MPa；
(5) pressure reduction up and down loaded in vacuum hotpressing tank is 1.6 ± 0.2MPa, and temperature rises to 160 DEG C, and heat-insulation pressure keeping is to prepreg
It is fully cured；
(6) temperature that prepreg solidification terminates in final vacuum autoclave is down to room temperature, can obtain sheet material.
6. a multilayer composite board, it is characterised in that: include panel, sandwich layer and base plate, sandwich layer be connected to panel and base plate it
Between；Panel and base plate all use the sheet material described in claim 1；Sandwich layer is by glass fiber reinforcement melamine foam material system
Form.
7. multilayer composite board as claimed in claim 6, it is characterised in that: in glass fiber reinforcement melamine foam material
The content of glass fibre is 10wt%-15wt%.
8. multilayer composite board as claimed in claim 6, it is characterised in that: the thickness of panel and base plate is 0.8-1.3mm.
9. multilayer composite board as claimed in claim 6, it is characterised in that: the thickness of sandwich layer is 15-18mm.
10. the preparation method of a multilayer composite board, it is characterised in that: the steps include:
(1) preparation of plates method described in claim 5 is used to make panel and base plate；
(2) by adhesive, panel, sandwich layer and base plate are bonded together according to panel, sandwich layer, the order of base plate, form multilamellar
Composite board.
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Application publication date: 20161026 |