CN208438808U - Composite material and its core material - Google Patents
Composite material and its core material Download PDFInfo
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- CN208438808U CN208438808U CN201820690147.1U CN201820690147U CN208438808U CN 208438808 U CN208438808 U CN 208438808U CN 201820690147 U CN201820690147 U CN 201820690147U CN 208438808 U CN208438808 U CN 208438808U
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Abstract
The utility model discloses composite material and its core material, the core material includes several cell units, cell unit includes the second class cell-wall being connected for cell unit adjacent thereto, cell unit further includes first kind cell-wall, first kind cell-wall includes two connected cell walls, in same first kind cell-wall, angle is formed between adjacent two cells wall, so that first kind cell-wall is bending structure；Adjacent four first kind cell-walls and two neighboring second class cell-wall surround variform first kind cell unit and the second class cell unit.First kind cell-wall has the ability for regularly causing the deformation of first kind cell-wall, when core material by L to or W to power and when being transferred to cell unit, angle between adjacent two cells wall changes, compensate the deformation of the other direction vertical with deformation direction, improve deformability when core material stress, core material is made to have the ability for being molded into the not expandable curved face such as spherical surface.
Description
Technical field
The utility model relates to technical field of composite materials, in particular to composite material and its core material.
Background technique
Sandwich structure core material, especially hexagonal honeycomb core material is by aramid paper, aluminium foil, glass fabric, carbon
One of the nonmetallic materials or metal material such as fiber cloth, stainless steel foil, high-temperature alloy-foil, brown paper are made.Wherein, poly- with aromatics
Amide paper is that hexagonal honeycomb core material made of main material is the hot spot researched and developed at present, aramid paper hexagonal honeycomb core
Material is that coated aramid paper, overlapping and thin plate layer press curing, cutting, expansion, impregnation, resin solidification etc. are a series of multiple
The honeycomb core material for the hexagonal hole trellis shape that general labourer's skill is made is the elder generation of high-intensitive high-modulus aramid paper enhancing
Into composite material, there are many merits such as lightweight, high-strength, Gao Mo, fire-retardant, high temperature resistant, low-dielectric loss, have been widely used for
In aerospace field and other multiple civil fields.
Fig. 1 is the structural schematic diagram of hexagon core material in the prior art.As shown in Figure 1, traditional hexagon core material cell list
1 ' of member is regular hexagon, and arranges and form honeycomb, but six 11 ' of cell-wall of the 1 ' cell unit of regular hexagon are
Straightened condition, in LW plane when one direction of core material is stretched, another perpendicular direction size can only reduce, when
When one direction is compressed, another perpendicular direction size can only extend, so as to cause the hexagon of straight cell-wall
Core material becomes " shape of a saddle " during curved.Therefore, the deformability of existing hexagon core material is very poor, application field because
This is limited to.
It is those skilled in the art's skill urgently to be resolved in view of this, how to provide a kind of core material that deformability is excellent
Art problem.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide the core material of composite material, including several cells
Unit, the cell unit include the second class cell-wall being connected for the cell unit adjacent thereto, the cell list
Member further includes first kind cell-wall, and the first kind cell-wall includes two connected cell walls, in the same first kind list
In first wall, angle is formed between the adjacent two cell wall, so that the first kind cell-wall is bending structure；
Adjacent four first kind cell-walls and the two neighboring second class cell-wall surround variform first
Class cell unit and the second class cell unit.
In the utility model, when first kind cell-wall includes several cell walls in a certain angle, is formed to be located to deform and be put down
Folded structure in face, when core material stress and when being transferred to the cell unit, a direction of the cell unit (expansion direction or
Strip direction) stress causes the cell unit size of the direction to change, and under external force, above-mentioned angle changes, to compensate
The deformation in another direction (strip direction or expansion direction) vertical with deformation direction, compared with prior art, the gauffer knot
Structure can reduce or eliminate the deformation of the other direction vertical with deformation direction, deformability when so as to improve core material stress,
And there is the performance of flexible core material, that is, have the ability for being molded into the not expandable curved face such as spherical surface.
Optionally, the first kind cell-wall includes the first cell wall and two, the second cell wall cell wall, and institute
It states in both the first cell wall and the second cell wall, at least one is equal relative to the expansion direction and the strip direction
Inclination.
Optionally, angle, and the second cell wall phase are formed between the first cell wall and the second cell wall
The first cell wall is tilted towards the outside of the cell unit.
Optionally, in the same first kind cell unit, along the strip direction, including be disposed opposite to each other two described in
First kind cell-wall, along the expansion direction, two first kind cell-walls including being disposed opposite to each other.
Optionally, in the same second class cell unit, along the strip direction, including be oppositely arranged two described in
First kind cell-wall, along the expansion direction, two first kind cell-walls including being oppositely arranged.
Optionally, the second class cell-wall extends along the strip direction of the core material, and each second class cell-wall is set
It is equipped with connection structure, along the expansion direction of the core material, the second class cell-wall of the adjacent cell unit offsets, and leads to
The connection structure is crossed to be connected.
Optionally, simultaneously head is spaced apart along the strip direction, the first kind cell-wall and the second class cell-wall
Tail is connected, and two first kind cell-walls for being located at the second class cell-wall both ends are oppositely arranged.
Optionally, each not set connection structure of cell wall of the first kind cell-wall.
Meanwhile the utility model also provides composite material, including core material and the panel for being covered in the core material, wherein institute
Stating core material is above-described core material.
Detailed description of the invention
Fig. 1 is the cell cellular construction schematic diagram of hexagon core material in the prior art；
Fig. 2 provides the axonometric drawing of the cell unit of core material in a specific embodiment by the utility model；
Fig. 3 is the front view of Fig. 2；
Fig. 4 is the front view of core material in another embodiment in Fig. 2；
Fig. 5 is the structural schematic diagram of the first kind cell unit of core material in Fig. 3 in a particular embodiment；
Fig. 6 is the structural schematic diagram of the second class cell unit of core material in Fig. 3 in a particular embodiment；
Fig. 7 is the structural schematic diagram of single layer thin plate in Fig. 2；
Fig. 8 is that the structural schematic diagram after connection structure is arranged in the second class cell-wall of single layer thin plate in Fig. 7；
Fig. 9 is that each single layer thin plate in Fig. 8 stacks the structural representation to form core material described in the utility model along expansion direction
Figure；
Figure 10 provides flow chart of the production method of core material in the first specific embodiment by the utility model；
Figure 11 provides flow chart of the production method of core material in second of specific embodiment by the utility model.
In Fig. 1:
1 ' cell unit, 11 ' cell-walls.
In Fig. 2-9:
1 first kind cell unit, 10 second class cell units, 11 first kind cell-walls, 111 first cell walls, 112 second
Cell wall, 12 second class cell-walls, 13 connection structures, 2 single layer thin plates；
L strip direction, W expansion direction, T thickness direction.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
Please refer to attached drawing 2-9, wherein Fig. 2 provides the cell unit of core material in a kind of specific implementation by the utility model
Axonometric drawing in example；Fig. 3 is the front view of Fig. 2；Fig. 4 is the front view of core material in another embodiment in Fig. 2；Fig. 5 is
The structural schematic diagram of the first kind cell unit of core material in a particular embodiment in Fig. 3；Fig. 6 is the second pores of core material in Fig. 3
The structural schematic diagram of lattice unit in a particular embodiment；Fig. 7 is the structural schematic diagram of single layer thin plate in Fig. 2；Fig. 8 is single in Fig. 7
Structural schematic diagram after the second class cell-wall setting connection structure of layer thin plate；Fig. 9 is each single layer thin plate edge expansion side in Fig. 8
The structural schematic diagram of core material described in the utility model is formed to stacking.
It should be noted that the nouns of locality such as " strip direction L " referred to herein, " expansion direction W " and " thickness direction T "
It is to be defined on the basis of the core material of stereochemical structure, wherein as shown in Fig. 2, " strip direction L " indicates the width direction of core material,
" expansion direction W " indicates the length direction of core material, and " thickness direction T " indicates the thickness direction of core material, and three is mutually perpendicular to.It can
To understand, when direction difference when core material molding, meaning representated by above-mentioned each noun of locality also answers difference, therefore, above-mentioned side
The appearance of position word is not construed as the absolute limit to scope of protection of the utility model.
In a specific embodiment, the utility model provides a kind of core material of composite material, as in Figure 2-4, the core
Material includes several cell units, wherein cell unit is the minimum repetitive unit that closing structure is formed in the core material, and cell list
Member includes first kind cell unit 1 and the second class cell unit 10.
As shown in Figure 5 and Figure 6, which includes first
Class cell-wall 11 and the second class cell-wall 12, wherein the second class cell-wall 12 is for connecting adjacent cell unit, and cell wall
Indicate each side of cell unit, the cell wall of two angles that are connected, formed forms first kind cell-wall 11, so that the first kind list
First wall 11 is bending structure, and the plane definition of strip direction L and expansion direction the W composition of core material is deformation plane.
In same first kind cell-wall 11, the angle between adjacent cell wall can change.Wherein, such as Fig. 5 and Fig. 6 institute
The embodiment shown forms angle between adjacent cell wall and refers to not being parallel to each other between adjacent two cells wall, can for (0,
180 °) between any angle.
In the utility model, when first kind cell-wall 11 includes two cell walls in angle, Formation cross-section is located at deformation
Folded structure in plane, when core material stress and when being transferred to the cell unit 1, a direction (the expansion side of the cell unit 1
Lead to 1 change in size of cell unit of the direction to W or strip direction L) stress, under external force, above-mentioned angle changes, from
And the deformation in another direction (strip direction L or expansion direction W) vertical with deformation direction is compensated, compared with prior art,
The folded structure can reduce or eliminate the deformation of the other direction vertical with deformation direction, change when so as to improve core material stress
Shape ability, and have the performance of flexible core material has the ability for being molded into the not expandable curved face such as spherical surface.
Specifically, in embodiment as shown in Figure 5, the first kind cell-wall 11 include two cell walls, respectively first
Cell wall 111 and the second cell wall 112, and relative tilt between the first cell wall 111 and the second cell wall 112, and form one
A folded structure.
As shown in figure 5, the above-mentioned folded structure that first kind cell-wall 11 is formed specifically includes opposite bending in the present embodiment
The first cell wall 111 and the second cell wall 112, when core material stress and when being transferred to the cell unit 1, the first cell wall 111
Angle between the second cell wall 112 changes.As shown in Fig. 2, the pulling force is made so that the core material is by the pulling force in the direction L as an example
When for cell unit 1, the size in the direction L increases, meanwhile, under a stretching force, the first cell wall 111 and the second cell wall
Angle between 112 increases, to compensate the cell unit 1 along the deformation in the direction W, it is made to maintain original size substantially.
And it is shown in FIG. 1 in the prior art, in the direction L under the action of pulling force, the direction L size increase, the direction W size is therewith
Reduce, otherwise under the action of L directional pressure, the direction L size reduces, and the direction W size increases with it；Therefore, it is constituted in L, W
In plane, the core material in one direction by flecition power after, the direction be pressurized reduce, another direction increase, to make
" shape of a saddle " is presented in whole core material.
More specifically, in embodiment as shown in Figure 5, the angle between the first cell wall 111 and the second cell wall 112 is
Obtuse angle, and the second cell wall 112 is tilted relative to the first cell wall 111 to the outside of cell unit 1, to be formed such as Fig. 5 institute
The first kind cell-wall 11 shown.
In Fig. 3, Fig. 5 and embodiment shown in fig. 6, the first cell wall 111 extends along expansion direction W, the second cell wall 112
It is inclined outwardly relative to the first cell wall 111, so that core material shown in Fig. 3 is formed, the cell unit knot of core material in the embodiment
Structure is perfect condition.
In the embodiment as shown in 4, the first cell wall 111 is tilted relative to expansion direction W and strip direction L, and
The angle of (0~180 °) is formed between second cell wall 112 and the first cell wall 111, so that core material shown in Fig. 4 is formed, by
In manufacturing and designing error, the cell cellular construction in the embodiment is virtual condition.
As described above, first kind cell-wall 11 can be various structures in the utility model, as long as being capable of forming folded structure
, still, the structure of first kind cell-wall 11 makes the core material manufacturing method simple in the present embodiment, is easy to implement.
Further, as shown in figure 5, in same first kind cell unit 1, along strip direction L, including what is be oppositely arranged
Two first kind cell-walls 11, along expansion direction W, including two first kind cell-walls 11 being oppositely arranged.
Therefore, in the present embodiment, in same first kind cell unit 1, the above-mentioned first kind list that is oppositely arranged including four
There are four folded structures for first wall 11, i.e. tool, so as to compensate the deformation of any direction in core material W and L plane.
Meanwhile as shown in fig. 6, in same second class cell unit 10, along strip direction L, including be oppositely arranged two
First kind cell-wall 11, along expansion direction W, including two first kind cell-walls 11 being oppositely arranged.
Therefore, in the present embodiment, in same second class cell unit 10, there are four folded structures for tool, so as to compensate
The deformation of any direction in core material W and L plane.
In the above various embodiments, as shown in figure 5, the first kind cell unit 1 further includes the second class cell-wall 12, wherein
The second class cell-wall 12 is provided with connection structure 13, and along the expansion direction W of core material, adjacent two first kind cell unit 1 is corresponding
It offsets, and is connected by connection structure 13.
Similarly, as shown in fig. 6, the second class cell unit 10 further includes the second class cell-wall 12, wherein second class
Cell-wall 12 is provided with connection structure 13, and along the expansion direction W of core material, the adjacent correspondence of two second class cells unit 10 offsets, and
It is connected by connection structure 13.
Therefore, in the expansion direction W of core material, the second unit wall 12 of adjacent two first kind cell unit 1 passes through connection knot
Structure 13 links together, and forms double layer material cell wall, and the second unit wall 12 of adjacent two second class cells unit 10 passes through company
Binding structure 13 links together, and double layer material cell wall is formed, to improve the intensity and rigidity of core material.
Meanwhile as shown in Figure 5 and Figure 6, along strip direction L, the first kind cell-wall 11 of the core material and the second class cell-wall
12 are spaced apart and join end to end, and two first kind cell-walls 11 for being located at 12 both ends of the second class cell-wall are oppositely arranged.
Therefore, the second class cell-wall 12 is also used to connect in addition to the adjacent two cells unit 1 for connecting expansion direction W
The adjacent first kind cell-wall 11 of strip direction can connect the adjacent first kind cell-wall 11 in same cell unit,
The adjacent first kind cell-wall 11 that adjacent cell unit can be connected, to form structure shown in Fig. 2.
In addition, in the above various embodiments, as shown in figure 9, connection structure 13, first kind list is arranged in each second class cell-wall 12
The not set connection structure 13 of each cell wall of first wall 11.
As described above, when connection structure 13 is arranged in the second class cell-wall 12 adjacent cell unit can be connected, and be arranged and connect
The cell wall of binding structure 13 is unlikely to deform, to improve the strength and stiffness of core material.
In the above various embodiments, above-mentioned connection structure 13 can be bonding agent, so that adjacent cell unit (the first pores
Lattice unit 1 and the second class cell unit 10) it is connected by bonding agent；Alternatively, above-mentioned connection structure 13 can also be solder, to make
It obtains and is welded between adjacent cell unit, in the specific implementation, a variety of welding manners such as Laser Welding can be used.Certainly, above-mentioned connection
Structure 13 can also be the other structures that can play connection function in this field or material.
In conclusion as shown in Figures 2 and 3, in core material provided by the utility model, the cell list with multiple foldings
Member, respectively first kind cell unit 1 and the second class cell unit 10, and each first kind cell unit 1 and the second class cell list
Member 10 all have two with the double layer material cell wall (the second class cell-wall 12) of adjacent cell units shared and four with it is adjacent
The shared monolayer material cell wall (two groups of first kind cell-walls 11) of cell unit 1, and the monolayer material cell wall (first kind list
First wall 11) it is folded structure cell-wall comprising the first cell wall 111 and the second cell wall 112 of opposite bending.Meanwhile edge
Expansion direction W and strip direction L, four adjacent first kind cell units 1 are connected, and surround the second class cell unit 10, adjacent
Four the second class cell units 10 be connected, surround first kind cell unit 1.
Meanwhile it can be aramid paper, alloy foil or fiberglass cloth material system that above-mentioned each cell wall of core material, which is,
At.
The utility model also provides a kind of composite material, including core material and the panel for being covered in core material, wherein core material be with
Upper any core material as described in the examples.Since the core material has above-mentioned technique effect, the composite material including the core material is also answered
With corresponding technical effect, details are not described herein again.
Please continue to refer to attached drawing 10 and Figure 11, wherein Figure 10 provides the production method of core material by the utility model
A kind of flow chart in specific embodiment；The production method that Figure 11 provides core material by the utility model is embodied at second
Flow chart in example；
In addition, the production method that the utility model further provides for a kind of core material, wherein the core material includes along its expansion side
Several single layer thin plates 2 being connected to W, along the strip direction L of the core material, which includes being spaced apart and joining end to end
First kind cell-wall 11 and the second class cell-wall 12, wherein first kind cell-wall 11 includes several cell walls, and adjacent cell
It is in angle between wall, the second class cell-wall 12 extends along the strip direction L of core material.As shown in Figure 10, under which includes
State step:
S110: angle, design the in design first kind cell-wall 11 between the length and adjacent cell wall of each cell wall
The length of two class cell-walls 12, the molding die of single layer thin plate 2 is made according to design result, and is chosen needed for the single layer thin plate 2
Basis material；
When design, can according to the core material under specifically used operating condition needed for the property that has calculate each hole in cell unit 1
Angle in the length and first kind cell-wall 11 of lattice wall between adjacent cell wall.
Specifically, in order to satisfy the use demand, the core material of composite material need to have enough mechanical properties, including plane pressure
Contracting intensity, L to plane shear intensity and modulus, W to plane shear intensity and modulus etc., meanwhile, should also have certain core material
Density and every foot of cell number.Therefore, the knot of the factor design cell unit 1 of above-mentioned various aspects can be comprehensively considered when specific design
Structure and size, and mold is designed and produced according to the core material structure that design obtains.
S120: basis material is suppressed in molding die and forms single layer thin plate 2.
As shown in fig. 7, the single layer thin plate 2 is joined end to end and is formed by first kind cell-wall 11 and the second class cell-wall 12, and
The connected direction of the two is the strip direction L of above-mentioned core material.
S130: connection structure 13 is set in each second class cell-wall 12 in single layer thin plate 2.
Dotted line in Fig. 8 indicates connection structure 13, and solid line indicates each cell wall of single layer thin plate 2.
S140: several single layer thin plates 2 are staggered relatively two-by-two, form the core material of the utility model.
The structural schematic diagram that each single layer thin plate 2 stacks after Fig. 9 expression setting connection structure 13, as can be known from Fig. 8, adjacent two
Second class cell-wall 12 of single layer thin plate 2 is overlapped, and can be connected by connection structure 13, to form the core of the utility model
Material.
S150: adjacent monolayer thin plate 2 is connected by connection structure.
Specifically, when above-mentioned connection structure 13 is bonding agent, after each single layer thin plate 2 stacks, need to carry out bonding agent
Solidification.When solidification, the core material of the utility model shown in Fig. 9 is put into the equipment with heating function, and practical in this
Place smooth aluminium sheet or other plate structures with smooth surface, aluminium sheet and this reality in the upper surface of novel core material LT plane
The surface paving release materials or spraying release agent contacted with novel core material, the surface not contacted with the core material of the utility model
Suitable weight is uniformly placed, so that the core material to the utility model applies certain pressure, and the warming-up device is set and is in
Within the scope of certain temperature, the predetermined time is kept the temperature, to complete the bonding agent solidification of the core material of the utility model, is obtained such as Fig. 2
Shown in core material.
In the utility model, the production method of core material is the method for forming using mold, therefore, can be by changing mold
Size realizes the production of different cell number core materials, thus formed have different densities core material, and can manufacture cell size compared with
Small core material is equivalent to every foot of cell number up to 90 for example, the core material that minimum cell size is about 3.4mm can be manufactured, because
This, the production method of the core material can manufacture the core material that every foot of cell number is more, mechanical property is preferable, density range is wider,
And manufacture efficiency is higher.
Specifically, in above-mentioned steps S120, which can be the mold with heating function, and its temperature may be configured as
220 DEG C~230 DEG C, so as to which basis material is hot-forming for single layer thin plate 2.
In above-mentioned steps S130, when the connection structure 13 of the second class cell-wall 12 setting is bonding agent, the bonding agent is specific
It can be " J-80B Nomex paper honeycomb sandwich adhesive " that the viscosity of " J-80BNomex paper honeycomb sandwich adhesive " can be
The glue amount control of 120cps ± 2cps, application can be 1.5g/ ㎡~2.0g/ ㎡, to be formed with " J-80B Nomex paper honeycomb
Sandwich adhesive " composite material foldable single layer thin-slab structure (see Fig. 8), will have " J-80B Nomex paper honeycomb sandwich gluing
Agent " composite material single layer thin plate foldable structure hang 2~3 minutes or dry certain time at room temperature.
Meanwhile above-mentioned production method is influenced smaller by core material raw material, workable material ranges are wide, for example, core material
Raw material can be the metal materials such as nonmetallic materials or alloy foil such as aramid paper, glass fabric.
Specifically, when the raw material of core material in above steps are the non-metallic materials such as aramid paper, glass fabric
Further include following step before step S120 when material:
S111: by raw material impregnating resin, composite material is formed；
In the step, specifically raw material can be passed through the resin storage tank equipped with GP445d05 phenol resin solution, GP445d05
Phenol resin solution specific gravity can be 1.100g/cm3±0.002g/cm3, then will be impregnated with a large amount of GP445d05 phenolic resin
Light sheet material passes through a pair of of Extruded roller, and extra phenolic resin is squeezed out, and ultimately forming resin content is answering for 31.4g/ ㎡ or so
Condensation material.
S112: by composite material by drying equipment, which at least has first area and second area two
Region, and the temperature of first area is lower than the temperature of second area, composite material passes sequentially through first area and second area, and
The predetermined time is stopped in two regions, to form the basis material of core material.
Specifically, the drying equipment in the step can be drying box, and drying box is divided into two regions, the temperature of first area
Can be 60 DEG C~65 DEG C, the temperature of second area is 150 DEG C~160 DEG C, also controllable composite material by first area when
Between control be 10s~12s, be 120s~144s by time of second area, finally cut the material come out from drying box
It is segmented into required length, forms above-mentioned basis material.
It should be noted that step S111 and S112 can may be alternatively located at step S110 between step S110 and S120
Before.
When the raw material of core material in above-mentioned steps S110~S150 be metal material when, without carry out step S111 and
S112.In addition, manufacture method of core material in the utility model be suitable for aramid paper, polyimides paper, pbo fiber paper,
Brown paper, glass fabric, carbon cloth, aluminium foil, stainless steel foil, titanium alloy foil, high-temperature alloy-foil, siderochrome aluminium foil etc. are nonmetallic
And metallic sheet stock.
Meanwhile the utility model also provides second of production method of core material, wherein the core material is above-described core
Material.As shown in figure 11, which includes the following steps:
S210: mold is made according to core material；
S220: the basis material of core material is cast in mold.
Wherein, the basis material of core material can be the nonmetallic materials such as metal material or plastics, can choose according to actual needs.
S230: die sinking obtains core material.
In the utility model, the production method of above-mentioned core material is casting, can lead to the shape and size for changing mold
The production of different cell sizes and different cell shape core materials is realized, so as to form the above-mentioned core with folded structure
Material.
Specifically, in step S210, using the core material model of auxiliary material production core material, and molding sand is covered in core material mould
Type is filled in core material model, is then removed auxiliary material, is obtained mold.
Wherein, auxiliary material is that fusing points are low, the material that easily removes for wax or gypsum etc., after molding sand molding, as long as this is auxiliary
Material is helped to remove.
In conclusion the core material and preparation method thereof in the utility model has following advantages: first, every foot can be manufactured
Cell number is up to 90 core materials, is equivalent to minimum cell size about 3.4mm, and be easy to adjust every foot of cell number, because
This, the manufacture suitable for curved surface class sandwich；Second, suitable material range is wide, can be used with a thickness of 1.5mil, 2mil,
The materials such as the meta-position aramid fiber paper of 3mil, 4mil, p-aramid paper and polyimides paper, aluminium foil, glass fabric, carbon cloth
Material, and the thickness for the aramid paper that existing aramid paper flexibility core material uses only has 3mil and two kinds of 4mil；Third, high production efficiency,
The flexible core material block that single can manufacture with a thickness of 18 inches or more, market supply only has before the data sheet improving eyesight that can be inquired
With a thickness of 12 inches of flexible core material block.
4th, density range is wide, for example, according to the ratio model of traditional hexagonal honeycomb core material aramid paper and impregnating resin
It encloses, according to 2mil thickness meta-position aramid fiber paper, can manufacture every foot of cell number is 80 (being equivalent to pore size is 3.8mm)
Flexible core material, density range 48kg/m3To 112kg/m3, according to 1.5mil thickness meta-position aramid fiber paper, every foot can be manufactured
Cell number is the flexible core material of 60 (being equivalent to pore size is 5.1mm), density range 24kg/m3To 64kg/m3, according to
1.5mil thickness meta-position aramid fiber paper can manufacture the flexible core that every foot of cell number is 90 (being equivalent to pore size is 3.4mm)
Material, density range 36kg/m3To 96kg/m3。
And it is that 35 (being equivalent to pore size is 8.7mm) and 50 (are equivalent to hole that the prior art, which only has every foot of cell number,
Having a size of 6.1mm) the flexible core materials of two kinds of cell sizes, density only has 40kg/m3、56kg/m3、72kg/m3、80kg/m3、88/
m3Five kinds of density.
In addition, the core material in the utility model can be used for the radome of aircraft, wing body radome fairing, engine nacelle,
Rudder, floor, partition, the secondary load sandwich sandwich structure components of the aircraft such as helicopter, general-purpose aircraft, it is also possible to
In the radome fairing and interior structure of the means of transports such as ship, high-speed railway.Meanwhile compared with traditional hexagon core material, the core material
With the ability for being molded into hyperbolic surface parts, while because the core material has negative poisson's ratio or zero Poisson's ratio, sandwich sandwich knot
Structure has bigger deformability, to expand the application site of sandwich sandwich structure and expand the peace of sandwich sandwich structure
Overall coefficient.In addition, the core material in the utility model can be radome, wing body radome fairing and hair compared with hexagon core material
The curved surfaces class part such as motivation nacelle reduces a large amount of manufacturing cost.
Composite material provided by the utility model and its core material are described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can be made to this utility model, these improve and repair
Decorations are also fallen into the protection scope of the utility model claims.
Claims (9)
1. the core material of composite material, including several cell units, the cell unit includes for the cell adjacent thereto
The second connected class cell-wall (12) of unit, which is characterized in that the cell unit further includes first kind cell-wall (11), described
First kind cell-wall (11) includes two connected cell walls, in the same first kind cell-wall (11), described in adjacent two
Angle is formed between cell wall, so that the first kind cell-wall (11) is bending structure；
Adjacent four first kind cell-walls (11) surround variform with the two neighboring second class cell-wall (12)
First kind cell unit (1) and the second class cell unit (10).
2. core material according to claim 1, which is characterized in that the first kind cell-wall (11) includes the first cell wall
, and the first cell wall (111) and the second cell wall (111) and (112) two cell walls of the second cell wall
(112) in the two, at least one is tilted relative to expansion direction (W) and strip direction (L).
3. core material according to claim 2, which is characterized in that the first cell wall (111) and the second cell wall
(112) form angle between, and the second cell wall (112) relative to the first cell wall (111) towards the cell
The outside of unit (1) tilts.
4. core material according to claim 2, which is characterized in that in the same first kind cell unit (1), along described
Strip direction (L), two first kind cell-walls (11) including being disposed opposite to each other, along the expansion direction (W), including sets opposite to each other
Two set the first kind cell-wall (11).
5. core material according to claim 2, which is characterized in that in the same second class cell unit (10), along institute
Strip direction (L) is stated, the first kind cell-wall (11) of two including being oppositely arranged, along the expansion direction (W), including it is opposite
Two be arranged the first kind cell-wall (11).
6. core material according to any one of claims 1-5, which is characterized in that the second class cell-wall (12) is along described
The strip direction (L) of core material extends, and each second class cell-wall (12) is provided with connection structure (13), along the swollen of the core material
The second class cell-wall (12) of swollen direction (W), the adjacent cell unit (1) offsets, and passes through the connection structure
(13) it is connected.
7. core material according to claim 6, which is characterized in that along the strip direction (L), the first kind cell-wall
(11) it is spaced apart and joins end to end with the second class cell-wall (12), and be located at the second class cell-wall (12) both ends
Two first kind cell-walls (11) are oppositely arranged.
8. core material according to any one of claims 1-5, which is characterized in that each institute of the first kind cell-wall (11)
State the not set connection structure of cell wall (13).
9. composite material, including core material and the panel for being covered in the core material, which is characterized in that the core material is claim 1-
Core material described in any one of 8.
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| CN201820690147.1U CN208438808U (en) | 2018-05-09 | 2018-05-09 | Composite material and its core material |
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| CN201820690147.1U CN208438808U (en) | 2018-05-09 | 2018-05-09 | Composite material and its core material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466207A (en) * | 2018-05-09 | 2019-11-19 | 西安弗曼博复合材料有限责任公司 | Core material and preparation method thereof, composite material |
| CN115405644A (en) * | 2022-08-24 | 2022-11-29 | 广州大学 | Negative Poisson's ratio structure based on extremely small curved surface and design method thereof |
-
2018
- 2018-05-09 CN CN201820690147.1U patent/CN208438808U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466207A (en) * | 2018-05-09 | 2019-11-19 | 西安弗曼博复合材料有限责任公司 | Core material and preparation method thereof, composite material |
| CN110466207B (en) * | 2018-05-09 | 2024-08-13 | 中国航空工业集团公司济南特种结构研究所 | Core material, manufacturing method thereof and composite material |
| CN115405644A (en) * | 2022-08-24 | 2022-11-29 | 广州大学 | Negative Poisson's ratio structure based on extremely small curved surface and design method thereof |
| CN115405644B (en) * | 2022-08-24 | 2023-07-18 | 广州大学 | A Negative Poisson's Ratio Structure Based on Minimal Surface and Its Design Method |
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