CN108297494A - 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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- CN108297494A CN108297494A CN201810066369.0A CN201810066369A CN108297494A CN 108297494 A CN108297494 A CN 108297494A CN 201810066369 A CN201810066369 A CN 201810066369A CN 108297494 A CN108297494 A CN 108297494A
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- 239000002131 composite material Substances 0.000 title claims abstract description 86
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000002708 enhancing effect Effects 0.000 title claims description 8
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000000835 fiber Substances 0.000 claims description 21
- 239000004744 fabric Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 17
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000000877 morphologic effect Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- 238000000465 moulding Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000011157 advanced composite material Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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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 shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of face cores to enhance composite material grid battenboard and preparation method thereof, belongs to technical field of composite materials.Steps are as follows：One, the composite material top panel with card slot and the composite material lower panel with card slot are prepared 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 by card slot between panel and core, enhance Interface adhesive strength, improve the bearing capacity of composite material grid battenboard, and the grid core flexible mould can be assembled into the core mold combined with a variety of ranks by the combination that is freely disassembled of movable block, so as to prepare the different permutation and combination composite material grid battenboards of unit cell of the same race, and it is simple for process, and 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 technology
Many engineering structure lightweight requirements improve its performance while mitigating weight, and are that realization is structure lightened main
Take two kinds of approach：One, Optimal improvements structural configuration, 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, and knot is improved 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 opens, 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 structures of the present invention is entire
It plays an important role in structure, on the one hand support upper and lower panel and transmits load, therefore it is required that being needed between panel and core higher
Face core binding ability；The space of another aspect core inner open can mitigate weight, and can stuffed heat insulated, sound insulating material, it is real
The multifunctionality of existing structure.
But due to the special geometry of Kagome grids, 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 susceptible to face core unsticking when external force, reduces the overall mechanical properties of structure, these all limit Kagome lattice
The application of grid.In addition 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 of design and manufacturing method in relation to 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 to reinforce
Part is made of two vertical side plates and upper and lower plates.Chinese patent CN 204585876U disclose a kind of composite material grid life
Mold is produced, technical characteristic is that the upper face of the mold is densely covered with convex block, and there is gap, these gaps to constitute fine between adjacent projections
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 solidification is crossed, composite material grid core is obtained.Its yellow loyalty of Chinese scholar：
" 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 cures for 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.
Invention content
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 carries
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 face core enhancing, assembles movable block by dismounting and is arranged to realize core demoulding and produce the different of unit cell of the same race
Arrange the composite material grid core of combination.
Technical scheme of the present invention：
A kind of face core enhancing composite material grid battenboard, including the grid core of orthotropy Kagome, band card
The composite material top panel of slot and the 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 overlaps 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 the composite material face with card slot, composite material face overall thickness is 1-2mm；Wherein, card slot
Shape determine that card slot is in periodic arrangement by the shape of grid core, ensure 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 forms, and 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 types and two kinds
The countersunk head threaded hole of type forms, and the locating slot of 4 types is respectively：A type movable blocks locating slot, Type B movable block locating slot, C
Type movable block locating slot and D type movable block locating slots；Two kinds of countersunk head threaded hole is respectively：E type countersunk head threaded holes and F types
Countersunk head threaded hole；The thickness of bottom plate is 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 overlaps, and countersunk head threaded hole counter sink portion is located at the bottom face of bottom plate, correspondence
For：E type countersunk heads threaded hole is corresponding with A type movable blocks locating slot, c-type movable block locating slot respectively, F type countersunk heads threaded hole respectively with
Type B movable block locating slot, D type movable block locating slots correspond to；
Movable component is divided into the movable block of 6 types, and respectively A types movable block, Type B movable block, c-type movable block, D types is lived
Motion block, G types active block stop and H-type active block stop；Wherein, A types movable block and c-type movable block by upper surface be hexagon and under
End face forms for round rectangle, 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 holes of 3-5mm that, which there is depth at end center,；A type movable blocks on the round rectangle and bottom plate of A type movable blocks position flute profile
Shape size is consistent, cooperates, is positioned；The round rectangle of c-type movable block and c-type movable block locating slot geomery one
It causes, cooperates, positioned；Type B movable block and D types movable block is triangle by upper surface and lower face 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 holes 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 blocks is consistent with D types movable block locating slot geomery on bottom plate, phase interworking
It closes, is positioned；G types active block stop is rectangular toothed by upper surface and lower face 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 holes of 3-5mm, Type B movable block locating slot geomery one on the round rectangle and bottom plate of G type active block stops
It causes, cooperates, positioned, therefore G types active block stop substitutes Type B movable block at assembly mold edge, lives for closing A types
Motion block；H-type active block stop is triangle dentation by upper surface and lower face is that round rectangle forms, and is highly 10-20mm；Its
In, the bottom center of round rectangle has depth for the F type threaded holes of 3-5mm, D on the round rectangle and bottom plate of H-type active block stop
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 blocks, for closing D type movable blocks；After movable component and bottom plate are completed to position according to correspondence, pass through E types
Sunk screw is attached fixation to A types movable block, c-type movable block and bottom plate, by F types sunk screw to Type B movable block, D
Type movable block, G types 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 slots, Type B movable block, G types active block stop and Type B movable block locating slot, c-type movable block and C
Type movable block locating slot, D types movable block, H-type active block stop and D type movable block locating slots are all made of clearance fit, ensure 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,
Locating slot corresponding on bottom plate carries out location fit；The G types active block stop substitutes Type B work at assembly mold edge
Motion block, for closing A type movable blocks, H-type active block stop constantly substitutes D type movable blocks at assembly mold edge, for closing D types
Grid core is assembled into the closing core mould combined with certain ranks by movable block by the movable block of both types
Tool.
A kind of preparation method of face core enhancing composite material grid battenboard, steps are as follows：
Step 1：Prepare the composite material upper and lower panel with card slot：1. cleaning panel mold upper surface is wiped with acetone,
Until upper surface is smooth and without resin residue, the then uniform smearing release agent on panel mold；2. by LY5288 epoxy resin
With HY5289 curing agent according to mass ratio 4：1 ratio is uniformly mixed, and is configured to resin solution, then on panel mold successively
It lays T300-3k carbon cloths and smears 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：Clear up bottom plate and movable component：1. wiping cleaning bottom plate and movable component respectively with acetone, i.e., A types are lived
Motion block, Type B movable block, c-type movable block, D types movable block, G types active block stop and H-type active block stop, up to surface is smooth and nothing
Resin residue；2. the uniform 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 types active block stop and H-type active block stop are used for closed lattice core edge, have to be formed
Certain line number and columns grid core mold；
Step 4：Prepare grid core：1. in the fiber placement slot N middle berths for the grid core mold that step 3 assembles
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：Prepare composite material grid battenboard：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 and lay 1-2 layers of T300-3k carbon in panel card slot face
Fiber cloth prepreg carries out secondary bonding, ensures that grid core and panel card slot are mutually chimeric in 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, and completion secondary curing is taken out after keeping the temperature 4-6h, finally obtains face core enhancing composite material grid sandwich
Plate.
Beneficial effects of the present invention：
1. the composite material grid battenboard of the present invention passes through mutual chimeric, the increasing of panel card slot and Kagome grid cores
The bond area for having added panel and core makes panel and core be preferably associated together, and improves the interface of panel and core
Intensity reduces the appearance of face core unsticking situation.
2. the core mold of the present invention it is same can to accomplish prepared by same mold 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. the core mold of the present invention is to obtain fiber placement slot N by assembling movable block, demoulding when, only needs
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. the core mold of the present invention can assemble movable block on one side when assembling movable block, one side lay down fibre,
Improve fiber placement efficiency and spreading.
5. the core mold of the present invention is made up of several groups of limited movable blocks, break the whole up into parts, it is easy to process.
6. the core mold design of the present invention is reasonable, at low cost, service efficiency is high, can repeatedly use, group assembly and disassembly
It unloads conveniently.
Description of the drawings
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 diagrames 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 diagrames in the grid core flexible mould of the specific embodiment of the invention one.
Fig. 5 (e) is G type active block stop schematic diagrames 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 that Fig. 9 is implemented by the specific embodiment of the invention two are combined as 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 blocks；7B type movable blocks；8C type movable blocks；9D type movable blocks；10G type active block stops；11H types are lived
Dynamic block；12E type threaded holes；13F type threaded holes；14 grid unit cells, N fiber placement slots, 5-1A type movable block locating slots；5-2B
Type movable block locating slot；5-3C type movable block locating slots；5-4D type movable block locating slots；5-5E type countersunk head threaded holes；5-6F types
Countersunk head threaded hole.
Specific implementation mode
Below in conjunction with attached drawing and technical solution, the invention will be further described.
Specific implementation mode one：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, is in periodic arrangement, and grid core can be embedded in card slot；
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 are 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 bottom plate 5 is by the locating slot of 4 types and two
The countersunk head threaded hole of type forms, and the locating slot of 4 types is respectively：A type movable block locating slots 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 types are heavy
5 total thickness of bottom plate of head thread hole 5-5 and F type countersunk head threaded hole 5-6, this embodiment are 20mm, clamping slot depth 10mm；It is heavy
Head thread hole and corresponding locating slot mutually run through, and the two center overlaps, and countersunk head threaded hole counter sink portion is located at 5 bottom end of bottom plate
Face, correspondence are：E type countersunk head threaded holes 5-5 respectively with A type movable block locating slots 5-1,5-3 pairs of c-type movable block locating slot
It answers, F type countersunk head threaded holes 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 types movable block 6, Type B movable block 7, c-type movable block 8, D types movable block 9, G type active catchs
The movable block composition of block 10, H-type active block stop 11 this 6 type.Wherein A types 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 types threaded hole 12 of 5mm that the bottom center of wherein round rectangle, which has depth,.The lower end round rectangle part of A types movable block 6 with
A type movable block locating slot 5-1 shape sizes on bottom plate 5 are 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 sizes, 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, it is the F types threaded hole 13 of 5mm that the bottom center of wherein round rectangle, which has depth,.Type B movable block
7 lower end round rectangle part is consistent with Type B movable block locating slot 5-2 shape sizes on bottom plate 5, can cooperate, be determined
Position；The lower end round rectangle part of D types movable block 9 is consistent with D types movable block locating slot 5-4 shape sizes on bottom plate 5, can be mutual
Cooperation, is positioned.The movable block of 10 type of G types 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 types threaded hole 13 of 5mm, G types 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 sizes on bottom plate 5, can cooperate, be determined
Position, therefore G types active block stop 10 can substitute Type B movable block 7 at assembly mold edge, for closing A types 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 types threaded hole 13 of 5mm, 11 lower end of H-type active block stop circle that the bottom center of wherein round rectangle, which has depth,
Angle rectangle part is consistent with D types movable block locating slot 5-4 shape sizes on bottom plate 5, can cooperate, be positioned, therefore H-type is lived
Dynamic block 11 can substitute D types movable block 9 at assembly mold edge, for closing D types movable block 9.When movable component and bottom plate 5
After completing positioning according to the correspondence, by E types sunk screw to A types movable block 6,8 both types of c-type movable block
Movable block and bottom plate 5 be attached fixation, by F types sunk screw to Type B movable block 7, D types movable block 9, G type active catchs
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 implementation mode two:The present embodiment is different from the first embodiment in that as shown in figure 9, this example
Unit cell line number and columns are combined as 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 implementation mode three：A kind of composite material grid battenboard preparation method of present embodiment according to the following steps into
Row：
Step 1: preparing composite material top panel 1 and lower panel 3 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 in the uniform smearing release agent in panel mold upper surface；②
T300-3k carbon fiber fabrics are 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 according to mass ratio 4：1 ratio is uniformly mixed, and is configured to resin solution；4. first laying three in 4 groove of panel mold
Angular cloth and hexagon cloth, as soon as often lay layer, uniformly smears prepared resin solution, when groove knead dough on cloth
When 4 surface of board mold is equal, lay rectangle cloth, as soon as equally often lay layer, prepared resin is uniformly smeared on cloth
Solution lays 4 layers of rectangle cloth in this example altogether.5. vacuum bag presses assistant formation, on the panel mold of resin prepreg fiber
Release cloth, airfelt and vacuum bag are coated successively, seals and set bleeding point, is assembled into vacuum flexible bag moulding system, are used
Vacuum pump vacuumizes, pressure 0.05MPa-0.1MPa, and the panel mold 4 that vacuum bag is depressed, which is put into incubator, to be heating and curing,
Solidification temperature is 100-120 degree, hardening 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 clears up bottom plate 5 and movable component：1. wiping cleaning bottom plate 5 and movable component respectively with acetone, i.e., A types are lived
Motion block 6, Type B movable block 7, c-type movable block 8, D types movable block 9, G types active block stop 10 and H-type active block stop 11, until surface
It is smooth and without resin residue；2. the uniform 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 types movable block 6, Type B movable block 7, c-type movable block 8, D types movable block 9, G types active block stop 10 and H-type active catch
Block 11, wherein G types active block stop 10 and H-type active block stop 11 finally obtain grid core mould for determining grid core boundary
Tool；
Step 4 prepares grid core 2：1. the grid core mold obtained with acetone wiping cleanup step three, when surface light
It is sliding and when without resin residue cleaning complete, the then uniform smearing release agent on mold；2. using the continuous winding manually guided
Mode is uniformly laid after carbon fibre tow is immersed resin solution in fiber placement slot N, while ensuring that the fiber of infall is high
Degree is 10mm；3. vacuum flexible bag moulding coats release cloth, airfelt and vacuum bag successively 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, hardening time 4-6 hour；6. demoulding
And post-process, after curing molding, vacuum flexible bag moulding system is removed, movable block is removed successively from core flexible mould, is reached
To stripping result, grid core is obtained, and modify 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 the side in panel card slot and lay 1-2 layers
T300-3k carbon cloth prepregs carry out secondary be bonded in bonding process and ensure that grid core 2 is mutually chimeric with panel card slot,
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.
Can be 3 × 5 according to the line number and columns of actual production when present embodiment step 2 group grate core mold
Kagome cores assemble unit cell, redundance can not assemble, and can while assembling lay down fibre, improve and lay
Efficiency.
Present embodiment step 4 ensures 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 cores.
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 transmit load.
Claims (2)
1. a kind of face core enhances composite material grid battenboard, which is characterized in that include the grid of orthotropy Kagome
Core (2), the composite material top panel (1) with card slot and the composite material lower panel (3) with card slot；
Described grid core (2) the height M is 10-20mm, is made of multiple composite material Kagome grids 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) is clipped, both for the composite material face with 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, ensures that grid core (2) is embedded 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 types and two
The countersunk head threaded hole of type forms, and the locating slot of 4 types is respectively：A type movable block locating slots (5-1), Type B movable block are fixed
Position slot (5-2), c-type movable block locating slot (5-3) and D type movable block locating slots (5-4)；Two kinds of countersunk head threaded hole difference
For：E type countersunk head threaded holes (5-5) and F type countersunk head threaded holes (5-6)；The thickness of bottom plate (5) is 20-40mm, and 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 overlaps, and countersunk head screw thread
Hole counter sink portion is located at the bottom face of bottom plate (5), and correspondence is：E type countersunk head threaded holes (5-5) are fixed with A type movable blocks respectively
Position slot (5-1), c-type movable block locating slot (5-3) are corresponding, F type countersunk head threaded holes (5-6) respectively with Type B movable block locating slot (5-
2), D types movable block locating slot (5-4) is corresponding；
Movable component is divided into the movable block of 6 types, respectively A types movable block (6), Type B movable block (7), c-type movable block (8),
D types movable block (9), G types active block stop (10) and H-type active block stop (11)；Wherein, A types movable block (6) and c-type movable block (8)
By upper surface be hexagon and lower face is that round rectangle forms, and hexagonal height is 10-20mm, the height of round rectangle
For 8-10mm, it is the E types threaded hole (12) of 3-5mm that the bottom center of round rectangle, which has depth,；The fillet square of A types movable block (6)
Shape is consistent with A type movable block locating slot (5-1) geomeries 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 types movable block (9) is triangle by upper surface and lower face is that round rectangle forms, and the height of triangle is 10-
The height of 20mm, round rectangle are 8-10mm, and it is the F types 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 types movable block (9) is consistent with D type movable block locating slot (5-4) geomeries on bottom plate (5), mutually
Cooperation, is positioned；G types active block stop (10) is rectangular toothed by upper surface and lower face is that round rectangle forms, and height is
For 10-20mm, there are two the consistent round rectangles of geomery for rectangular toothed lower end tool, and each round rectangle bottom center
It is the E types threaded hole (13) of 3-5mm to have depth, and the round rectangle and Type B movable block on bottom plate (5) of G types active block stop (10) are fixed
Position slot (5-2) geomery is consistent, cooperates, is positioned, therefore G types active block stop (10) is substituted at assembly mold edge
Type B movable block (7), for closing A types movable block (6)；H-type active block stop (11) is triangle dentation by upper surface and lower face is
Round rectangle forms, and is highly 10-20mm；Wherein, it is the F type threaded holes 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) geomeries on bottom plate (5), phase
Mutually cooperation, is positioned, therefore H-type active block stop (11) substitutes D types movable block (9) at assembly mold edge, for closing D types
Movable block (9)；After movable component and bottom plate (5) are completed to position according to correspondence, by E types sunk screw to A type activities
Block (6), c-type movable block (8) and bottom plate (5) are attached fixation, by F types sunk screw to Type B movable block (7), D type activities
Block (9), G types 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 types movable block (6) and A type movable block locating slots (5-1), Type B movable block (7), G types 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 types movable block (9), H-type active catch
Block (11) and D type movable block locating slots (5-4) are all made of clearance fit, ensure 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 types 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 types movable block (9) at assembly mold edge, for closing D type activities
Grid core is assembled into the closing core mold combined with certain ranks by block (9) by the movable block of both types.
2. a kind of preparation method of face core enhancing composite material grid battenboard, which is characterized in that steps are as follows：
Step 1：Prepare the composite material upper and lower panel with card slot：1. wiping cleaning panel mold (4) upper surface with acetone, directly
It is smooth to upper surface and without resin residue, the then uniform smearing release agent on panel mold (4)；2. by LY5288 epoxy resin
With HY5289 curing agent according to mass ratio 4：1 ratio is uniformly mixed, and resin solution is configured to, then on panel mold (4)
T300-3k carbon cloths are laid successively and smear resin solution；3. being applied to panel mold (4) using vacuum bag pressure method
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：Clear up bottom plate (5) and movable component：1. wiping cleaning bottom plate (5) and movable component, i.e. A types respectively with acetone
Movable block (6), Type B movable block (7), c-type movable block (8), D types movable block (9), G types active block stop (10) and H-type active block stop
(11), until surface is smooth and without resin residue；2. the uniform 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 types active block stop (10) and H-type active block stop (11) is used for closed lattice core edge, carrys out shape
At with certain line number and columns grid core mold；
Step 4：Prepare grid core：1. being laid 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：Prepare composite material grid battenboard：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 in panel card slot face by laying 1-2 layers of T300-3k
Carbon cloth prepreg carries out secondary bonding, ensures that grid core (2) and panel card slot are mutually chimeric in 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, completion secondary curing is taken out after keeping the temperature 4-6h, finally obtains face core enhancing composite material grid
Battenboard.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210291479A1 (en) * | 2018-05-18 | 2021-09-23 | Euro-Composites S.A. | Ceramic honeycomb body for lightweight structures and corresponding production method |
| CN114179390A (en) * | 2021-10-25 | 2022-03-15 | 成都飞机工业（集团）有限责任公司 | Forming method of composite material grid type part |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-01-24 CN CN201810066369.0A patent/CN108297494B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210291479A1 (en) * | 2018-05-18 | 2021-09-23 | Euro-Composites S.A. | Ceramic honeycomb body for lightweight structures and corresponding production method |
| CN114179390A (en) * | 2021-10-25 | 2022-03-15 | 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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