CN108297494B - A kind of face core enhancing composite material grid battenboard and preparation method thereof - Google Patents
A kind of face core enhancing composite material grid battenboard and preparation method thereof Download PDFInfo
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- CN108297494B CN108297494B CN201810066369.0A CN201810066369A CN108297494B CN 108297494 B CN108297494 B CN 108297494B CN 201810066369 A CN201810066369 A CN 201810066369A CN 108297494 B CN108297494 B CN 108297494B
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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
- 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
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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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
- 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
Abstract
The present invention provides a kind of face core enhancing composite material grid battenboards and preparation method thereof, belong to technical field of composite materials.Steps are as follows: one, preparing the composite material top panel with card slot and the composite material lower panel with card slot using panel mold；Two, design and organize grate core flexible mould；Three, composite material grid core is prepared using grid core flexible mould；Four, composite material grid battenboard is prepared.Composite material grid battenboard core of the present invention has orthotropy, it is fitted between panel and core by card slot, enhance Interface adhesive strength, improve the bearing capacity of composite material grid battenboard, and the grid core flexible mould can by movable block be freely disassembled combination come be assembled into a variety of ranks combination core mold, so as to prepare the different permutation and combination composite material grid battenboards of unit cell of the same race, and simple process, demoulding is easy.
Description
Technical field
The invention belongs to technical field of composite materials, are related to the design of Ultra-Light Material grid class formation, specially a kind of face
Core enhances composite material grid battenboard and preparation method thereof.
Background technique
Many engineering structure lightweight requirements improve its performance while mitigating weight, and are that realization is structure lightened main
Two kinds of approach: one, Optimal improvements structural configuration are taken, using the high structural configuration of bearing capacity, two, using light material, it is special
It is not the composite material for realizing structure.Therefore the elder generation of high-strength light is more and more used in bearing structure design and use
Traditional metal structure is replaced into composite material grid sandwich structure, improves knot while construction weight is greatly reduced
The mechanical property of structure.
Composite material grid sandwich structure is a kind of Novel lightweight structure with excellent mechanical performance, is had periodically
Orderly, the feature that designability is strong and core inner space is open, has in terms of rigidity, intensity, stability and vibration characteristics
Have excellent feature, while having the advantages that material structure integration and integrated manufacturing system (IMS), Aeronautics and Astronautics, ship and
Field of traffic has broad application prospects.The core of composite material Kagome grid sandwich structure of the present invention is entire
It plays an important role in structure, upper and lower panel and transmitting load is on the one hand supported, therefore it is required that needing between panel and core higher
Face core binding ability；The space of another aspect core inner open can reduce weight, and can stuffed heat insulated, sound insulating material, it is real
The multifunctionality of existing structure.
But the geometry special due to Kagome grid, keep its manufacturing process extremely complex, using existing technique
Desired high-performance can not often be prepared.And contact position area is small between the panel and core of usual sandwich structure, in conjunction with
Intensity is low, bears to be easy to appear face core unsticking when external force, reduces the overall mechanical properties of structure, these all limit Kagome lattice
The application of grid.Furthermore existing preparation process can only prepare the cell structure of fixed unit cell combination, nothing according to the existing configuration of mold
Method accomplishes that same mold prepares the cell structure of the different permutation and combination of unit cell of the same race, reduces the service efficiency of mold.
The correlative study for designing and manufacturing method of related composite material grid battenboard includes: Chinese patent
CN203307725U discloses a kind of composite material orthogonal cell structure sandwich floorings with reinforcer, and technical characteristic is
In composite material core infall, composite material strength member system, composite material strength member system and composite material grid core are set
Body adds shearing bolt connection on the basis of splicing, and composite material strength member system is made of four reinforcers, each reinforcement
Part is made of two vertical side plates and upper and lower plates.It is raw that Chinese patent CN 204585876U discloses a kind of composite material grid
Mold is produced, technical characteristic is that the upper face of the mold is densely covered with convex block, has gap between adjacent projections, these gaps constitute fine
Dimension attachment slot, in machining composite material square-grid core, fiber is attached in fiber attachment slot simultaneously forming and hardening, finally leads to
The composite material grid core after demoulding thimble ejection solidifies is crossed, composite material grid core is obtained.Chinese scholar Huang Qizhong:
" research of Advanced Composite Grid flexible-mould assisted co-curing reaction ", Dalian University of Technology, Ph.D. Dissertation, 2013
Year.It prepares grid-stiffened composite structure using silicon rubber mould, and wherein silicon rubber expanded by heating is the solidification of grid core siding
Lateral pressure is provided, and the co-curing molding of grid core and unilateral panel can be achieved at the same time.
Summary of the invention
The present invention is that bond strength is low between panel and core in existing composite material grid battenboard and makes in order to solve
Mold service efficiency is low in standby technique, can not accomplish the problem of same mold prepares the different permutation and combination of unit cell of the same race, and mentions
It has supplied a kind of composite material grid battenboard to design and its modularization preparation facilities, has utilized the card slot and core in upper and lower panel
Body is fitted into realize that face core enhances, and core demoulding is realized by disassembly assembling movable block and produces the different of unit cell of the same race and is arranged
Arrange combined composite material grid core.
Technical solution of the present invention:
A kind of face core enhancing composite material grid battenboard, grid core, band card including orthotropy Kagome
The composite material top panel of slot and composite material lower panel with card slot；
The grid core height M is 10-20mm, is made of multiple composite material Kagome grid unit cells, Mei Gege
Grid unit cell is repeated to constitute by two kinds of morphological configurations rules of right angled triangle and hexagon, the bottom edge of right angled triangle with it is hexagonal
It is overlapped on one side, two right angled triangles are located on hexagonal opposite side, and the bottom edge of right angled triangle symmetrically extends；Adjacent lattice
Grid unit cell is realized by right angled triangle vertex, bottom edge extended line, hexagonal vertex to be connected, regular arrangement；
The composite material top panel with card slot is identical with the structure of plate shape below the composite material with card slot, folder
Grid core, both for have card slot composite material face, composite material face overall thickness be 1-2mm；Wherein, card slot
Shape determine that card slot is in periodic arrangement by the shape of grid core, guarantee that grid core is embedded in corresponding card slot, card slot
Depth is the half of composite material face overall thickness；
The mold that grid battenboard uses includes panel mold and grid core composition flexible mould, and panel mold is to have one
Determine the rectangular slab of the chase unit composition of line number and columns, each chase unit is by two right angle trigonometry connected in stars and a hexagonal
Connected in star composition, two right angle trigonometry connected in stars are located at the right and left of hex-shaped recess, and wherein depth of groove is 0.5-
The distance of 1mm, triangle base and adjacent hexagon long side is 1-3mm.
Grid core composition flexible mould is made of bottom plate and movable component；Bottom plate is by the locating slot of 4 seed types and two kinds
The countersunk head threaded hole of type forms, and the locating slot of 4 seed types is respectively as follows: A type movable block locating slot, Type B movable block locating slot, C
Type movable block locating slot and D type movable block locating slot；Two kinds of countersunk head threaded hole is respectively as follows: E type countersunk head threaded hole and F type
Countersunk head threaded hole；Bottom plate with a thickness of 20-40mm, clamping slot depth 8-10mm, two kinds of countersunk head threaded hole and correspondence
Locating slot run through bottom plate, the two center is overlapped, and countersunk head threaded hole counter sink portion is located at the bottom face of bottom plate, corresponding relationship
Are as follows: E type countersunk head threaded hole is corresponding with A type movable block locating slot, c-type movable block locating slot respectively, F type countersunk head threaded hole respectively with
Type B movable block locating slot, D type movable block locating slot are corresponding；
Movable component is divided into the movable block of 6 seed types, and respectively A type movable block, Type B movable block, c-type movable block, D type is living
Motion block, G type active block stop and H-type active block stop；Wherein, A type movable block and c-type movable block by upper surface be hexagon and under
End face is round rectangle composition, and hexagonal height is 10-20mm, and the height of round rectangle is 8-10mm, the bottom of round rectangle
It is the E type threaded hole of 3-5mm that, which there is depth at end center,；A type movable block on the round rectangle and bottom plate of A type movable block positions flute profile
Shape size is consistent, cooperates, is positioned；The round rectangle and c-type movable block locating slot geomery one of c-type movable block
It causes, cooperates, positioned；Type B movable block and D type movable block is triangle by upper surface and lower end surface is round rectangle
Composition, the height of triangle are 10-20mm, and the height of round rectangle is 8-10mm, and the bottom center of round rectangle has the depth to be
The F type threaded hole of 3-5mm；The round rectangle of Type B movable block is consistent with Type B movable block locating slot geomery on bottom plate, mutually
Cooperation, is positioned；The round rectangle of D type movable block is consistent with D type movable block locating slot geomery on bottom plate, phase interworking
It closes, is positioned；G type active block stop is rectangular toothed by upper surface and lower end surface is that round rectangle forms, and is highly 10-
20mm, there are two the consistent round rectangles of geomery for rectangular toothed lower end tool, and each round rectangle bottom center has depth
Degree is the E type threaded hole of 3-5mm, Type B movable block locating slot geomery one on the round rectangle and bottom plate of G type active block stop
It causes, cooperates, positioned, therefore G type active block stop substitutes Type B movable block at assembly mold edge, it is living for closing A type
Motion block；H-type active block stop is triangle dentation by upper surface and lower end surface is that round rectangle forms, and is highly 10-20mm；Its
In, it is the F type threaded hole of 3-5mm, D on the round rectangle and bottom plate of H-type active block stop that the bottom center of round rectangle, which has depth,
Type movable block locating slot geomery is consistent, cooperates, is positioned, therefore H-type active block stop is replaced at assembly mold edge
For D type movable block, for closing D type movable block；After movable component and bottom plate are completed to position according to corresponding relationship, pass through E type
Sunk screw is attached fixation to A type movable block, c-type movable block and bottom plate, by F type sunk screw to Type B movable block, D
Type movable block, G type active block stop, H-type active block stop and bottom plate are attached fixation；Between having between movable block after fixation
Gap, the shape in gap is consistent with the grid unit cell shape, as fiber placement slot N, gap width 1-3mm；The A
Type movable block and A type movable block locating slot, Type B movable block, G type active block stop and Type B movable block locating slot, c-type movable block and C
Type movable block locating slot, D type movable block, H-type active block stop and D type movable block locating slot are all made of clearance fit, guarantee cooperation
Precision；The movable block is respectively provided with multiple, and same type of movable block is completely the same, and same type can be replaced mutually,
Location fit is carried out with locating slot corresponding on bottom plate；It is living that the G type active block stop substitutes Type B at assembly mold edge
Motion block, for closing A type movable block, H-type active block stop constantly substitutes D type movable block at assembly mold edge, for closing D type
Grid core is assembled into the closing core mould with the combination of certain ranks by the movable block of both types by movable block
Tool.
A kind of preparation method of face core enhancing composite material grid battenboard, steps are as follows:
Step 1: composite material upper and lower panel of the preparation with card slot: 1. wiping cleaning panel mold upper surface with acetone,
Until upper surface is smooth and without resin residue, release agent is then uniformly smeared on panel mold；2. by LY5288 epoxy resin
It is uniformly mixed with HY5289 curing agent according to the ratio of mass ratio 4:1, is configured to resin solution, then on panel mold successively
Laying T300-3k carbon cloth and smearing resin solution；3. applying 0.05MPa- to panel mold using vacuum bag pressure method
The pressure of 0.1MPa, and panel mold is put into incubator after 100-120 DEG C of heat preservation 4-6h of heating and is taken out, demoulding is prepared
Composite material top panel with card slot and the composite material lower panel with card slot；
Step 2: cleaning bottom plate and movable component: 1. wiping cleaning bottom plate and movable component respectively with acetone, i.e. A type is living
Motion block, Type B movable block, c-type movable block, D type movable block, G type active block stop and H-type active block stop, up to surface is smooth and nothing
Resin residue；2. uniformly smearing release agent on bottom plate and movable component；
Step 3: positioning group grate core mold: the line number and columns combined according to unit cell to be produced is on bottom plate
Positioning assembling movable component, wherein G type active block stop and H-type active block stop are used to closed lattice core edge, have to be formed
Certain line number and columns grid core mold；
Step 4: grid core is prepared: the fiber placement slot N middle berth of the grid core mold 1. assembled in step 3
Put T300-3k fiber prepreg tow；2. apply the pressure of 0.05MPa-0.1MPa to grid core mold using vacuum bag pressure method,
And mold is put into incubator and heats 100-120 DEG C, it is taken out after keeping the temperature 4-6h, movable component is dismantled, mold releasability is reached
Effect, obtain grid core；
Step 5: composite material grid battenboard is prepared: composite material top panel, the band card slot that step 1 is prepared
Composite material lower panel and the grid core that is prepared of step 4 pass through in laying 1-2 layers of panel card slot face T300-3k carbon
Fiber cloth prepreg carries out secondary bonding, guarantees that grid core and panel card slot are mutually chimeric during the bonding process, avoids interference with,
Vacuum bag assistant formation is used after the completion of bonding, is applied the pressure of 0.05-0.1MPa to sandwich structure, is eventually put into heat preservation
Case heats 100-120 DEG C, takes out completion secondary curing after keeping the temperature 4-6h, finally obtains face core enhancing composite material grid sandwich
Plate.
Beneficial effects of the present invention:
1. composite material grid battenboard of the invention passes through mutual chimeric, the increasing of panel card slot and Kagome grid core
The bond area for having added panel and core is preferably associated together panel and core, improves the interface of panel and core
Intensity reduces the appearance of face core unsticking situation.
2. core mold of the invention can accomplish that same mold preparation is same by the dismountable of several groups of movable blocks
The different permutation and combination composite material grid battenboards of kind unit cell, can study the dimensional effect of composite material grid battenboard,
Improve the service efficiency of mold.
3. core mold of the invention is to obtain fiber placement slot N by assembling movable block, demoulding when, is only needed
Movable block, which is disassembled, to be demoulded, and be convenient in demoulding, and can avoid causing core siding when demolished well
Damage it is complicated to solve original grid core shapes, it is difficult to the problem of demoulding.
4. core mold of the invention can assemble movable block when assembling movable block on one side, one side lay down fibre,
Improve fiber placement efficiency and spreading.
5. core mold of the invention is made up of several groups of limited movable blocks, break the whole up into parts, it is easy to process.
6. core mold design of the invention is reasonable, at low cost, service efficiency is high, can repeatedly use, group assembly and disassembly
It unloads conveniently.
Detailed description of the invention
Fig. 1 is the composite material grid Sandwich structure schematic diagram of the specific embodiment of the invention one.
Fig. 2 is the panel mold schematic diagram of the specific embodiment of the invention one.
Fig. 3 is the effect diagram after the grid core flexible mould assembling of the specific embodiment of the invention one.
Fig. 4 (a) is the schematic diagram of the grid core flexible mould bottom plate upper surface of the specific embodiment of the invention one.
Fig. 4 (b) is the schematic diagram of the grid core flexible mould bottom plate bottom face of the specific embodiment of the invention one.
Fig. 5 (a) is A type movable block schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (b) is Type B movable block schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (c) is c-type movable block schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (d) is D type movable block schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (e) is G type active block stop schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (f) is H-type active block stop schematic diagram in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 6 is the 6. obtained composite material top panel signal with card slot of three step 1 of the specific embodiment of the invention
Figure.
Fig. 7 is three step 4 of the specific embodiment of the invention 6. obtained grid core schematic diagram.
Fig. 8 is unit cell schematic diagram of the present invention.
The unit cell line number and columns group that Fig. 9 is implemented by the specific embodiment of the invention two are combined into 1 × 2 schematic diagram.
In figure: the 1 composite material top panel with card slot；2 grid cores；The 3 composite material lower panels with card slot；4 panels
Mold；5 bottom plates；6A type movable block；7B type movable block；8C type movable block；9D type movable block；10G type active block stop；11H type is living
Dynamic block；12E type threaded hole；13F type threaded hole；14 grid unit cells, N fiber placement slot, 5-1A type movable block locating slot；5-2B
Type movable block locating slot；5-3C type movable block locating slot；5-4D type movable block locating slot；5-5E type countersunk head threaded hole；5-6F type
Countersunk head threaded hole.
Specific embodiment
Below in conjunction with attached drawing and technical solution, the invention will be further described.
Specific embodiment 1: a kind of composite material grid battenboard of present embodiment as shown in Figure 1, the battenboard by
Grid core 2, the composite material top panel 1 with card slot and the composition of the composite material lower panel 3 with card slot；In this embodiment,
As shown in Figure 7 and Figure 8, the grid core 2 is made of 15 unit cells 14, unit cell line number and the columns combination of present embodiment
It is 3 × 5, core height M is 10mm；
As shown in figures 1 to 6, the composite material top panel 1 with card slot and the composite material lower panel 3 with card slot
Shape size is the same, is the composite material face with card slot, and the plate thickness of this embodiment is 2mm, wherein card slot by
The triangle and hexagon of adjacent protrusion are constituted, and card slot depth is 1mm, are in periodic arrangement, the embeddable card slot of grid core；
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the mold of present embodiment is by panel mold 4 and grid core flexible mould
Composition；The panel mold 4 is the rectangular slab of the chase unit composition of certain line number and columns, and each chase unit is by two
Right angle trigonometry connected in star and a hex-shaped recess composition, two right angle trigonometry connected in stars are located at the left and right of hex-shaped recess
Both sides, wherein this example concave groove depth is 1mm, and the distance of triangle base and neighbouring hexagon long side is 2mm.Institute
The grid core composition flexible mould stated is made of bottom plate 5 and movable component, and insole board 5 is by the locating slot of 4 seed types and two
The countersunk head threaded hole of seed type forms, and the locating slot of 4 seed types is respectively: A type movable block locating slot 5-1, the positioning of Type B movable block
Slot 5-2, c-type movable block locating slot 5-3, D type movable block locating slot 5-4；Two kinds of countersunk head threaded hole is respectively: E type is heavy
Head thread hole 5-5 and F type countersunk head threaded hole 5-6,5 total thickness of bottom plate of this embodiment are 20mm, clamping slot depth 10mm；It is heavy
Head thread hole and corresponding locating slot are intertwined, and the two center is overlapped, and countersunk head threaded hole counter sink portion is located at 5 bottom end of bottom plate
Face, corresponding relationship are as follows: E type countersunk head threaded hole 5-5 respectively with A type movable block locating slot 5-1,5-3 couples of locating slot of c-type movable block
It answers, F type countersunk head threaded hole 5-6 is corresponding with Type B movable block locating slot 5-2, D type movable block locating slot 5-4 respectively.
The movable component is by A type movable block 6, Type B movable block 7, c-type movable block 8, D type movable block 9, G type active catch
The movable block composition of block 10, H-type active block stop 11 this 6 seed type.Wherein A type movable block 6, c-type movable block 8 both types
Movable block all includes upper end hexagonal shape of portion and lower end round rectangle part, and two parts height of this embodiment is 10mm,
It is the E type threaded hole 12 of 5mm that wherein the bottom center of round rectangle, which has depth,.The lower end round rectangle part of A type movable block 6 with
A type movable block locating slot 5-1 shape size on bottom plate 5 is consistent, can cooperate, be positioned；The lower end of c-type movable block 8
Round rectangle part is consistent with c-type movable block locating slot 5-3 shape size, can cooperate, be positioned.Type B movable block 7, D
The movable block of 9 both types of type movable block all includes upper end gable and lower end round rectangle part, this embodiment
Two parts height be 10mm, wherein the bottom center of round rectangle have depth be 5mm F type threaded hole 13.Type B movable block
7 lower end round rectangle part is consistent with Type B movable block locating slot 5-2 shape size on bottom plate 5, can cooperate, be determined
Position；The lower end round rectangle part of D type movable block 9 is consistent with D type movable block locating slot 5-4 shape size on bottom plate 5, can be mutual
Cooperation, is positioned.The movable block of 10 type of G type active block stop includes upper end rectangular toothed part and lower end round rectangle portion
Point, two parts height of this embodiment is 10mm, and specifically there are two shape sizes for the movable block lower end tool of this type
Consistent round rectangle, and it is the E type threaded hole 13 of 5mm, G type active block stop 10 that each round rectangle bottom center, which has depth,
Lower end round rectangle part it is consistent with Type B movable block locating slot 5-2 shape size on bottom plate 5, can cooperate, be determined
Position, therefore G type active block stop 10 can substitute Type B movable block 7 at assembly mold edge, for closing A type movable block 6.H-type activity
The movable block of 11 type of block includes upper end triangle dentate part and lower end round rectangle part, and two parts of this embodiment are high
Degree is 10mm, and it is the F type threaded hole 13 of 5mm, 11 lower end of H-type active block stop circle that wherein the bottom center of round rectangle, which has depth,
Angle rectangle part is consistent with D type movable block locating slot 5-4 shape size on bottom plate 5, can cooperate, be positioned, therefore H-type is living
Dynamic block 11 can substitute D type movable block 9 at assembly mold edge, for closing D type movable block 9.When movable component and bottom plate 5
After completing positioning according to the corresponding relationship, by E type sunk screw to A type movable block 6,8 both types of c-type movable block
Movable block and bottom plate 5 be attached fixation, by F type sunk screw to Type B movable block 7, D type movable block 9, G type active catch
Block 10, the movable block of 11 these four types of H-type active block stop and bottom plate 5 are attached fixation, finally fix after movable block it
Between with gap, the shape in gap and the line number and columns be 3 × 5 Kagome core shapes it is consistent, these gap structures
At fiber placement slot N, the gap width of this embodiment is 2mm.
Specific embodiment 2: the present embodiment is different from the first embodiment in that, as shown in figure 9, this example
Unit cell line number and columns group are combined into 1 × 2, and the core height M of this embodiment is 10mm, and grid core is made of 2 unit cells 14,
Other parameters are same as the specific embodiment one.
Specific embodiment 3: a kind of composite material grid battenboard preparation method of present embodiment according to the following steps into
Row:
Step 1: composite material top panel 1 and lower panel 3 of the preparation with card slot: 1. wiping cleaning panel mold 4 with acetone
Upper surface is cleared up when surface is smooth and without resin residue and is completed, then uniformly smears release agent in panel mold upper surface；②
T300-3k carbon fiber fabric is cut, carbon fiber fabric is cut into the triangle cloth of the size shape as panel mold groove
The rectangle cloth of material and hexagon cloth and panel size；3. resin solution is prepared, by LY5288 epoxy resin and HY5289
Curing agent is uniformly mixed according to the ratio of mass ratio 4:1, is configured to resin solution；4. the first laying three in 4 groove of panel mold
Angular cloth and hexagon cloth, as soon as every laying layer, uniformly smears prepared resin solution, when groove and face on cloth
When 4 surface of board mold is equal, laying rectangle cloth, as soon as same every laying layer, uniformly smears prepared resin on cloth
Solution, 4 layers of rectangle cloth of laying altogether in this example.5. vacuum bag presses assistant formation, on the panel mold of resin prepreg fiber
Release cloth, airfelt and vacuum bag are successively coated, bleeding point is sealed and set, is assembled into vacuum flexible bag moulding system, is used
Vacuum pump vacuumizes, pressure 0.05MPa-0.1MPa, and the panel mold 4 that vacuum bag is depressed is put into incubator and is heating and curing,
Solidification temperature is 100-120 degree, curing time 4-6 hour；6. demoulding and post-processing, after curing molding, removes vacuum bag and be pressed into
Molding panel is demoulded from panel mold 4, and modifies face plate edge by type system, is obtained above the composite material with card slot
Plate 1 and lower panel 3.
Step 2 cleaning bottom plate 5 and movable component: 1. wiping cleaning bottom plate 5 and movable component respectively with acetone, i.e. A type is living
Motion block 6, Type B movable block 7, c-type movable block 8, D type movable block 9, G type active block stop 10 and H-type active block stop 11, until surface
It is smooth and without resin residue；2. uniformly smearing release agent on bottom plate 5 and movable component；
Step 3 positioning group grate core mold: according to the unit cell of production combination 3 × 5, positioning assembling is lived on bottom plate 5
Dynamic component, i.e. A type movable block 6, Type B movable block 7, c-type movable block 8, D type movable block 9, G type active block stop 10 and H-type active catch
Block 11, wherein G type active block stop 10 and H-type active block stop 11 are used to determine grid core boundary, finally obtain grid core mould
Tool；
Step 4 prepares grid core 2: the grid core mold 1. obtained with acetone wiping cleanup step three, when surface light
It is sliding and when without resin residue cleaning complete, release agent is then uniformly smeared on mold；2. using the continuous winding manually guided
Uniform laying is in fiber placement slot N after carbon fibre tow is immersed resin solution by mode, while ensuring that the fiber of infall is high
Degree is 10mm；3. vacuum flexible bag moulding successively coats release cloth, airfelt and vacuum bag on core mold, seals and be arranged
Good bleeding point is assembled into vacuum flexible bag moulding system, is vacuumized using vacuum pump, pressure 0.05MPa-0.1MPa, by vacuum
The core mold of bag pressure is put into incubator and is heating and curing, and solidification temperature is 100-120 degree, curing time 4-6 hour；6. demoulding
And post-process, after curing molding, vacuum flexible bag moulding system is removed, movable block is successively removed from core flexible mould, is reached
To stripping result, grid core is obtained, and modifies core edge.
Step 5 prepares composite material grid battenboard: composite material top panel 1, the band card slot that step 1 is prepared
Composite material lower panel 3 and the grid core 2 that is prepared of step 3 pass through at 1-2 layers of side laying of panel card slot
T300-3k carbon cloth prepreg carries out secondary bonding and guarantees that grid core 2 and panel card slot are mutually chimeric during the bonding process,
It avoids interference with, vacuum bag assistant formation is used after the completion of bonding, apply the pressure of 0.05-0.1MPa to sandwich structure, last
It rises and is put into incubator heating 100-120 degree, take out completion secondary curing after keeping the temperature 4-6h, finally obtain a kind of composite material grid
Battenboard.
It can be 3 × 5 according to the line number and columns of actual production when present embodiment step 2 group grate core mold
Kagome core assemble unit cell, redundance can not assemble, and can while assembling lay down fibre, improve laying
Efficiency.
Present embodiment step 4 guarantees that groove enriches, tight 2. in fiber placement slot N when lay down fibre.
3. present embodiment step 4 disassembles movable component can reach stripping result, be convenient in demoulding, Er Qieke
It is damaged to avoid to Kagome grid core.
Present embodiment step 4 is during being bonded panel and core, it is ensured that and core is mutual chimeric with card slot,
It avoids interference with, face core connection area can be increased in this way, improve face core Interface adhesive strength, more preferably transmitting load.
Claims (2)
1. a kind of face core enhances composite material grid battenboard, which is characterized in that the grid including orthotropy Kagome
Core (2), the composite material top panel (1) with card slot and the composite material lower panel (3) with card slot；
Grid core (2) the height M is 10-20mm, is made of multiple composite material Kagome grid unit cells (14), each
Grid unit cell (14) is repeated to constitute by two kinds of morphological configurations rules of right angled triangle and hexagon, the bottom edge of right angled triangle and six
Angular coincidence on one side, two right angled triangles are located on hexagonal opposite side, and the bottom edge of right angled triangle symmetrically extends；
Adjacent grid unit cell (14) is realized by right angled triangle vertex, bottom edge extended line, hexagonal vertex to be connected, regular row
Cloth；
The structure of the composite material top panel (1) with card slot and composite material lower panel (3) shape with card slot is identical,
Grid core (2) are clipped, both for the composite material face for having card slot, composite material face overall thickness is 1-2mm；Its
In, the shape of card slot is determined by the shape of grid core (2), and card slot is in periodic arrangement, guarantees that grid core (2) insertion is opposite
The card slot answered, card slot depth are the half of composite material face overall thickness；
The mold that grid battenboard uses includes panel mold (4) and grid core composition flexible mould, and panel mold (4) is to have
The rectangular slab of the chase unit composition of certain line number and columns, each chase unit is by two right angle trigonometry connected in stars and one six
Angular groove composition, two right angle trigonometry connected in stars are located at the right and left of hex-shaped recess, and wherein depth of groove is
The distance of 0.5-1mm, triangle base and adjacent hexagon long side is 1-3mm；
Grid core composition flexible mould is made of bottom plate (5) and movable component；Bottom plate (5) is by the locating slot of 4 seed types and two
The countersunk head threaded hole of seed type forms, and it is fixed that the locating slot of 4 seed types is respectively as follows: A type movable block locating slot (5-1), Type B movable block
Position slot (5-2), c-type movable block locating slot (5-3) and D type movable block locating slot (5-4)；Two kinds of countersunk head threaded hole difference
Are as follows: E type countersunk head threaded hole (5-5) and F type countersunk head threaded hole (5-6)；Bottom plate (5) with a thickness of 20-40mm, clamping slot depth is
8-10mm, two kinds of countersunk head threaded hole and corresponding locating slot run through bottom plate (5), and the two center is overlapped, and countersunk head screw thread
Hole counter sink portion is located at the bottom face of bottom plate (5), corresponding relationship are as follows: E type countersunk head threaded hole (5-5) is fixed with A type movable block respectively
Position slot (5-1), c-type movable block locating slot (5-3) are corresponding, F type countersunk head threaded hole (5-6) respectively with Type B movable block locating slot (5-
2), D type movable block locating slot (5-4) is corresponding；
Movable component is divided into the movable block of 6 seed types, respectively A type movable block (6), Type B movable block (7), c-type movable block (8),
D type movable block (9), G type active block stop (10) and H-type active block stop (11)；Wherein, A type movable block (6) and c-type movable block (8)
By upper surface be hexagon and lower end surface is that round rectangle forms, and hexagonal height is 10-20mm, the height of round rectangle
For 8-10mm, it is the E type threaded hole (12) of 3-5mm that the bottom center of round rectangle, which has depth,；The fillet square of A type movable block (6)
Shape is consistent with A type movable block locating slot (5-1) geomery on bottom plate (5), cooperates, is positioned；C-type movable block
(8) round rectangle is consistent with c-type movable block locating slot (5-3) geomery, cooperates, is positioned；Type B movable block
(7) and D type movable block (9) is triangle by upper surface and lower end surface is that round rectangle forms, and the height of triangle is 10-
20mm, the height of round rectangle are 8-10mm, and it is the F type threaded hole (13) of 3-5mm that the bottom center of round rectangle, which has depth,；B
The round rectangle of type movable block (7) is consistent with Type B movable block locating slot (5-2) geomery on bottom plate (5), cooperates, into
Row positioning；The round rectangle of D type movable block (9) is consistent with D type movable block locating slot (5-4) geomery on bottom plate (5), mutually
Cooperation, is positioned；G type active block stop (10) is rectangular toothed by upper surface and lower end surface is that round rectangle forms, and height is
For 10-20mm, rectangular toothed lower end tool is there are two the consistent round rectangle of geomery, and each round rectangle bottom center
Having depth is the E type threaded hole (13) of 3-5mm, and Type B movable block is fixed on the round rectangle of G type active block stop (10) and bottom plate (5)
Position slot (5-2) geomery is consistent, cooperates, is positioned, therefore G type active block stop (10) is substituted at assembly mold edge
Type B movable block (7), for closing A type movable block (6)；H-type active block stop (11) is triangle dentation by upper surface and lower end surface is
Round rectangle composition, is highly 10-20mm；Wherein, it is the F type threaded hole of 3-5mm that the bottom center of round rectangle, which has depth,
(13), the round rectangle of H-type active block stop (11) is consistent with D type movable block locating slot (5-4) geomery on bottom plate (5), phase
Mutually cooperation, is positioned, therefore H-type active block stop (11) substitutes D type movable block (9) at assembly mold edge, for closing D type
Movable block (9)；After movable component and bottom plate (5) complete to position according to corresponding relationship, by E type sunk screw to A type activity
Block (6), c-type movable block (8) and bottom plate (5) are attached fixation, by F type sunk screw to Type B movable block (7), D type activity
Block (9), G type active block stop (10), H-type active block stop (11) and bottom plate (5) are attached fixation；Between movable block after fixation
With gap, the shape in gap is consistent with grid unit cell (14) shape, as fiber placement slot N, gap width 1-
3mm；The A type movable block (6) and A type movable block locating slot (5-1), Type B movable block (7), G type active block stop (10) and B
Type movable block locating slot (5-2), c-type movable block (8) and c-type movable block locating slot (5-3), D type movable block (9), H-type active catch
Block (11) and D type movable block locating slot (5-4) are all made of clearance fit, guarantee cooperation precision；The movable block is respectively provided with
Multiple, and same type of movable block is completely the same, same type can be replaced mutually, with corresponding locating slot on bottom plate (5)
Carry out location fit；The G type active block stop (10) substitutes Type B movable block (7) at assembly mold edge, for closing A
Type movable block (6), H-type active block stop (11) constantly substitute D type movable block (9) at assembly mold edge, for closing D type activity
Grid core is assembled into the closing core mold with the combination of certain ranks by the movable block of both types by block (9).
2. a kind of preparation method of face core enhancing composite material grid battenboard as described in claim 1, which is characterized in that step
It is as follows:
Step 1: composite material upper and lower panel of the preparation with card slot: cleaning panel mold (4) upper surface 1. is wiped with acetone, directly
It is smooth to upper surface and without resin residue, then release agent is uniformly smeared on panel mold (4)；2. by LY5288 epoxy resin
It is uniformly mixed with HY5289 curing agent according to the ratio of mass ratio 4:1, resin solution is configured to, then on panel mold (4)
Successively laying T300-3k carbon cloth and smearing resin solution；3. being applied using vacuum bag pressure method to panel mold (4)
The pressure of 0.05MPa-0.1MPa, and panel mold (4) is put into incubator after 100-120 DEG C of heat preservation 4-6h of heating and is taken out,
The composite material top panel (1) with card slot and the composite material lower panel (3) with card slot is prepared in demoulding；
Step 2: cleaning bottom plate (5) and movable component, i.e. A type 1. cleaning bottom plate (5) and movable component: are wiped respectively with acetone
Movable block (6), Type B movable block (7), c-type movable block (8), D type movable block (9), G type active block stop (10) and H-type active block stop
(11), until surface is smooth and without resin residue；2. uniformly smearing release agent on bottom plate (5) and movable component；
Step 3: positioning group grate core mold: the line number and columns combined according to unit cell to be produced is fixed on bottom plate (5)
Hyte fills movable component, and wherein G type active block stop (10) and H-type active block stop (11) are used to closed lattice core edge, carrys out shape
At with certain line number and columns grid core mold；
Step 4: grid core is prepared: the 1. laying in the fiber placement slot N for the grid core mold that step 3 assembles
T300-3k fiber prepreg tow；2. apply the pressure of 0.05MPa-0.1MPa to grid core mold using vacuum bag pressure method, and
Mold is put into incubator and heats 100-120 DEG C, is taken out after keeping the temperature 4-6h, movable component is dismantled, mold releasability is reached
Effect obtains grid core (2)；
Step 5: composite material grid battenboard is prepared: composite material top panel 1 that step 1 is prepared, with card slot
The grid core (2) that composite material lower panel 3 and step 4 are prepared passes through in laying 1-2 layers of panel card slot face T300-3k
Carbon cloth prepreg carries out secondary bonding, guarantees that grid core (2) and panel card slot are mutually chimeric during the bonding process, avoids
Interference, bonding use vacuum bag assistant formation after the completion, apply the pressure of 0.05-0.1MPa to sandwich structure, eventually put
Enter incubator and heat 100-120 DEG C, take out completion secondary curing after keeping the temperature 4-6h, finally obtains face core enhancing composite material grid
Battenboard.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066369.0A CN108297494B (en) | 2018-01-24 | 2018-01-24 | A kind of face core enhancing composite material grid battenboard and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066369.0A CN108297494B (en) | 2018-01-24 | 2018-01-24 | A kind of face core enhancing composite material grid battenboard and preparation method thereof |
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| LU100801B1 (en) * | 2018-05-18 | 2019-11-21 | Euro Composites | Ceramic honeycomb body for lightweight structures and manufacturing processes therefor |
| CN114179390B (en) * | 2021-10-25 | 2023-01-10 | 成都飞机工业（集团）有限责任公司 | Forming method of composite material grid type part |
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| CN102407618A (en) * | 2011-08-12 | 2012-04-11 | 哈尔滨工业大学 | Dot matrix coreboard made from composite material |
| CN105729588A (en) * | 2016-03-29 | 2016-07-06 | 刘瑞 | Novel plywood |
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