CN101954761A - Spatial fiber web-reinforced composite material sandwich structure part - Google Patents
Spatial fiber web-reinforced composite material sandwich structure part Download PDFInfo
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- CN101954761A CN101954761A CN2010102443133A CN201010244313A CN101954761A CN 101954761 A CN101954761 A CN 101954761A CN 2010102443133 A CN2010102443133 A CN 2010102443133A CN 201010244313 A CN201010244313 A CN 201010244313A CN 101954761 A CN101954761 A CN 101954761A
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- 239000000835 fiber Substances 0.000 title claims abstract description 89
- 239000011208 reinforced composite material Substances 0.000 title abstract 2
- 239000004744 fabric Substances 0.000 claims abstract description 68
- 239000002131 composite material Substances 0.000 claims abstract description 52
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 240000007182 Ochroma pyramidale Species 0.000 claims description 11
- 229920006231 aramid fiber Polymers 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 10
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 229920006387 Vinylite Polymers 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 229920006305 unsaturated polyester Polymers 0.000 claims description 8
- 238000009396 hybridization Methods 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000004917 carbon fiber Substances 0.000 claims description 5
- 244000055346 Paulownia Species 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 4
- 239000011496 polyurethane foam Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 244000050510 Cunninghamia lanceolata Species 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000005007 epoxy-phenolic resin Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
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- 238000000465 moulding Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
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- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009408 flooring Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000009742 vacuum bag moulding Methods 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
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- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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Abstract
The invention discloses a spatial fiber web-reinforced composite material sandwich structure part. The sandwich structure part comprises cores (1), and is characterized in that: a method comprises the following steps of: wrapping the cores (1) with fiber cloth (6); putting the cores (1) wrapped with the fiber cloth (6) together to form a beam shape, a plate shape or a shell shape; curing the fiber cloth (6) at seams of the cores (1) with resin to form a composite material web; and paving one or more layers of the fiber cloth (6) on upper and lower surfaces of the cores (1) respectively; and curing the paved fiber cloth (6) with the resin to form face plates (2). The mechanical property of the sandwich structure part is obviously improved, so that the whole stress property of the structure is further improved; simultaneously, a spatial fiber web and upper and lower face plates form a communicated whole body to wrap the cores, which increases the contact area between the face plates and the cores and improves the antistripping capacity between the face plates and the cores. Besides, the specification and the size of the cores can be adjusted according to the stress characteristics of the structure, so a plurality of structure shapes and inner web structures are obtained, and the structure is conveniently designed.
Description
Technical field
The present invention relates to a kind of space fiber web enhanced type composite material sandwich structure beam, plate, hull structure component, it is widely used in the structural member that shipping vehicle, protection works, bridge construction etc. need fields such as high-strength light, strong shock resistance, load be bigger, anticorrosion, as: floorings, railway car, container bottom board, airport backing plate, prefabricated house wallboard, bridge-collision-avoidance pier etc.
Background technology
Composite material sandwich structure is made up of three parts, and outermost layer is a panel, mainly bears the direct stress that flexural deformation causes, adopts material manufacturing high-strength, high-modulus, as carbon fiber, glass fabric or the aramid fiber etc. of lamination; The centre is a core, for sandwich provides enough cross sectional moment of inertia and shearing resistance areas, mainly bears shear stress, materials such as honeycomb commonly used, foam, cork wood.Be bonding layer between panel and the core, both bonded together, unsaturated polyester (UP) commonly used, vinylite, epoxy resin, phenolic resins etc. by resin.
Composite material sandwich structure has following feature: 1) big, the good toughness of high-strength light, rigidity, anti-fatigue ability are strong.Strengthen structure by changing fiber lay down layer, core kind and thickness and interface, can obtain the required structural behaviour of various Engineering Structure Component (bending rigidity, bent, cut with compression bearing etc.).2) insulation, sound insulation, protection against the tide.Because light foam or cork wood core belong to loose structure, and are difficult for moisture absorption, will have good energy-saving effect when using as sheet material.3) corrosion-resistant, electromagnetic shielding.High-intensity fiber has good corrosion resistance by the surface layer of resin solidification as structural elements, can be used for ship structure member or offshore engineering, resists ambient influnence, sea water intrusion and radar-reconnaissance.4) Green High Performance structural material.The new midsole structure material does not use a large amount of ore resource in process of production, does not consume a large amount of energy, does not produce environmental pollution.Therefore, the new midsole structure material replaces traditional structural materials such as steel, concrete to a certain extent as the Green High Performance structural material.The application of composite can relate to fields such as military installations, defence engineering, vehicle, naval vessel, building, bridge; Adopt composite material sandwich structure to make compartment, container, haul tank car and the chemical storage tank etc. of naval vessel member, train and motorbus as developed country; In the bridge construction field, can be used for roof boarding, building template, body of wall dividing plate, floorings, airport temporary backing, Light Pontoon Bridge etc.This shows that composite material sandwich structure is a kind of tool material with broad prospects for development and version.
In China, existing composite material sandwich structure is owing to easily peel off a little less than panel and the core caking property, the resistance to compression and the shear resistance that add foam core materials such as polyurethane are lower, therefore can not make full use of the resistance to tension of fiber panel, thereby make that this type of sandwich form can extensive use.
Summary of the invention
The objective of the invention is at the resistance to compression of present foam and cork wood core and shear resistance is lower, the deficiency of technology such as a little less than the interfacial bond property of core and panel, develop structural members such as a kind of novel space fiber web enhanced type composite material sandwich structure beam, plate, shell, can significantly improve the resistance to compression of core and the antistripping ability between shear resistance and core and the panel.Simultaneously, this sandwich material is stronger in the textural designability of structure, can satisfy the stressed needs of different Engineering Structure Component.
The technical solution adopted for the present invention to solve the technical problems is as follows:
A kind of space fiber web enhanced type composite material sandwich structure spare, it comprises core 1, twine fiber cloth 6, it is characterized in that core 1 is twined fiber cloth 6, core 1 assembly that to twine fiber cloth 6 again is paved into beam, plate or hull shape shape, form the composite web behind applying position, adjacent core 1 side (being the seam crossing of core 1) fiber cloth and the resin solidification, respectively lay one or more layers fiber cloth, and form panel 2 with resin solidification in the upper and lower surface of core 1.
Wherein, described core 1 can be bulk or strip, and size, quantity, position can be adopted flexibly according to the structure actual loading.
Individual layer is unidirectional as required, individual layer is multidirectional, multilayer is unidirectional or the multi-layer and multi-directional array is pieced together shop formation beam, plate, hull shape shape for described core 1;
The planar alignment mode of described composite web is preferably parallel orthogonal and arranges, is vertically to arrange along the core thickness direction, forms space lattice web.Promptly be specially composite horizontal that the vertical web 4 of composite that composite transversal web 3 that fiber cloth 6 and resin form, fiber cloth 6 and resin form, fiber cloth 6 and resin form to web 5.
Described core 1 is foam, cork wood or polyurethane foam, polyvinyl chloride foam, carbon foam, Balsa wood, paulownia wood, China fir etc.
Described panel 2 is the fiber material, and it comprises: single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber or hybridization fiber cloth.
Described resin comprises: unsaturated polyester (UP), vinylite, epoxy resin or phenolic resins.
The laying direction and the number of plies of the fiber cloth 6 of described winding core and the fiber cloth of panel 2 can be adjusted as required flexibly.Described fiber cloth 6 is glass fabric, carbon cloth, aramid fiber or hybridization fiber cloth.
Above-mentioned space fiber web enhanced type composite material sandwich structure can adopt method as described below to prepare:
A. with bulk or strip foam and 1 six windings of cork wood core fiber cloth 6;
B. the core of handling well 1 is unidirectional along individual layer, individual layer is multidirectional, multilayer is unidirectional or multi-layer and multi-directional is laid, the laying quantity of core 1 and direction can arrange that the core splicing seams is vertical according to stressed needs arbitrarily; Can be processed into beam, plate, hull shape shape according to the member needs;
C is layed in one or more layers fiber cloth the upper and lower surface of core 1;
D. by vacuum bag moulding process, vacuum guiding and forming technique or RTM moulding process resin is circulated in vacuum bag or the mould;
E. after treating the resin solidification moulding, take out, the fiber layer of cloth becomes panel 2 with resin solidification, and adjacent core seaming position and resin form composite web 3,4,5.
Can obtain the space fiber web enhanced type composite material sandwich structure that cementitiousness is significantly improved between a kind of core resistance to compression and shear resistance and panel and the core.
Beneficial effect of the present invention compared with the prior art: the present invention is twined fiber cloth with the core that processes, and pieces together being paved into beam, plate, hull shape shape, forms space composite web behind the fiber cloth of adjacent core seam crossing and the resin solidification.Space fiber web enhanced type composite material sandwich structure is compared with other sandwiches, and its outstanding feature is to twine core behind the fiber because the effect of contraction of composite web, and mechanical property significantly improves, and then improves the holistic resistant behavior of structure; Simultaneously, the space fiber web forms with upper and lower panel and is communicated with integral body with the core parcel, has increased the contact area of panel and core, has strengthened the antistripping ability between panel and core.In addition, core can be adjusted specification and size according to the loading characteristic of structure, obtains multiple construction profile and internal web structure, the structural design of being more convenient for.The present invention can be widely used in the structural member in fields such as shipping vehicle, protection works, bridge construction, as: floorings, railway car, prefabricated house wallboard etc.
Description of drawings
Fig. 1-4 is through receiving and distributing typical space fiber web enhanced type composite material sandwich structure beam, plate, the hull structure component schematic diagram of moulding process final molding such as sticking with paste technology, vacuum bag moulding process, vacuum guiding and forming technique or RTM;
Fig. 5-6 is the unidirectional space of a kind of bilayer fiber web enhanced type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Fig. 7-8 is the unidirectional space of a kind of individual layer fiber web enhanced type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Fig. 9-10 is a kind of single-layer bidirectional space fiber web enhanced type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Figure 11-12 is space of the present invention fiber web enhanced type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Figure 13-14 is space of the present invention fiber web enhanced type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Among the figure: 1 is core; 2 is panel; 3 is the composite transversal web that fiber cloth and resin form; 4 is the vertical web of composite that fiber cloth and resin form; 5 is that the composite horizontal that forms of fiber cloth and resin is to web; 6 is the fiber cloth that is used to twine core.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described:
Consult Fig. 1-4, space of the present invention fiber web enhanced type composite material sandwich structure, it comprises the core 1 of polyvinyl chloride foam material, be the good block core of processing and fabricating, twine one deck twin shaft to glass fabric 6, after the core double-layer double-direction pieced together be paved into tabularly, form web 3,4,5 behind core 1 seam crossing fiber cloth 6 and the epoxy resin cure, upper and lower surface at core 1 all is equipped with two-layer twin shaft to glass fibers cloth 6, forms fiberglass panel 2 with epoxy resin cure.
Consult Fig. 5-6, space of the present invention fiber web enhanced type composite material sandwich structure, it comprises the core 1 of paulownia wood material, be the good strip core of processing and fabricating, twine two-layer twin shaft to carbon cloth 6, after be paved into the double-deck unidirectional assembly of core tabular, core 1 seam crossing carbon cloth 6 solidifies the back with vinylite and forms resin web 4,5, upper surface at core 1 is equipped with three layers of four-axial aramid fiber layer of cloth, three layers of four-axial carbon cloth 6 of lower surface at core 1 solidify to form fiber panel 2 with vinylite.
As described in embodiment 1, but according to the structure stress feature, but the unidirectional layout of core multilayer.
Consult Fig. 7-10, invention fiber web enhanced type composite material sandwich structure of the present invention, it comprises the core 1 of polyurethane foam material, be the good bulk of processing and fabricating, strip core, twine one deck twin shaft to glass fabric 6, after with core 1 single-layer bidirectional piece together be paved into tabular, form resin web 3,4 behind core seam crossing glass fabric and the phenolic resin curing, upper surface at core 1 is equipped with three layers of four-axial glass fibre layer of cloth, lower surface is equipped with five layers of four-axial glass fabric 6, forms fiber panel 2 with phenolic resin curing.
As described in embodiment 1 or 2, but but the core individual layer arrange, and be arranged in the thickness of the fiber panel 2 of core upper and lower surface can be consistent, also can be inconsistent.
Consult Figure 11-12, invention fiber web enhanced type composite material sandwich structure of the present invention, it comprises the core 1 of polyurethane foam material, bulk for the good different size of processing and fabricating, the strip core, twine two-layer twin shaft to glass fabric 6, after the core plurality of layers of double is paved into the beam shape to assembly, core seam crossing glass fabric and vinylite solidify the back and form resin web 3,4,5, web 3,4 spacing can be by the dimensions control of core 1, upper surface at core 1 is equipped with two-layer four-axial glass fibre layer of cloth, and lower surface is equipped with four layers of four-axial glass fibre layer of cloth, solidify to form fiber panel 2 with vinylite.
As described in embodiment 1, but this sandwich is from being girder construction in appearance on the one hand, and core can adopt two or more specifications as required in addition, and the web spacing that the core seam crossing is formed changes along the beam length direction.
Consult Figure 13-14, invention fiber web enhanced type composite material sandwich structure of the present invention, it comprises the core 1 of Balsa wood, be the good terrace with edge shape of processing and fabricating, twine one deck twin shaft to aryl fiber cloth 6, after core 1 single-layer bidirectional pieced together be paved into shelly, form resin web 3,4 behind core seam crossing aryl fiber cloth and the epoxy resin cure, upper surface at core 1 is equipped with four layers of four-axial aramid fiber layer of cloth, lower surface is equipped with four layers of four-axial aramid fiber layer of cloth, forms fiber panel 2 with epoxy resin cure.
As described in embodiment 3, but core is cut to the terrace with edge shape in advance, and the sandwich of formation is from being shell structure in appearance.
The preparation method of above-mentioned space fiber web enhanced type composite material sandwich structure is as follows:
A. foam (comprising: polyurethane, polyvinyl chloride, carbon foam etc.) and cork wood (comprising: Balsa wood, paulownia wood, China fir etc.) are manufactured bulk or strip core 1, twine one or more layers fiber cloth 6 (comprise single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber and hybridization fiber cloth etc.), after core 1 pieced together by designing requirement be paved into plate, beam, hull shape shape, can be unidirectional or two-way on the in-plane, but thickness direction one or more layers, the size of core and quantity can be arranged according to the stressed needs of structure operational phase;
B. with one or more layers fiber cloth 6 (comprising: single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber and hybridization fiber cloth etc.) be layed in the upper and lower surface of core 1;
C. by vacuum bag moulding process, vacuum guiding and forming technique or RTM moulding process resin (comprising: unsaturated polyester (UP), vinylite, epoxy resin, phenolic resins etc.) is circulated in vacuum bag or the mould;
D. after treating the resin solidification moulding, take out, the fiber layer of cloth becomes panel 2 with resin solidification, and core seam crossing fiber cloth and vinylite solidify the back and form resin web 3,4,5 or resin web 3,4 or resin web 4,5.
Can obtain the space fiber web enhanced type composite material sandwich structure that cementitiousness is significantly improved between a kind of whole bending resistance, core resistance to compression and shear resistance and panel and the core.
Claims (9)
1. space fiber web enhanced type composite material sandwich structure spare, it comprises core (1), it is characterized in that core (1) is twined fiber cloth (6), core (1) assembly that to twine fiber cloth (6) again is paved into beam, plate or hull shape shape, form the composite web behind the seam crossing fiber cloth (6) of core (1) and the resin solidification, respectively lay one or more layers fiber cloth (6) in the upper and lower surface of core (1), form panel (2) with resin solidification.
2. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described core (1) is bulk or strip.
3. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described core (1) individual layer is unidirectional, individual layer is multidirectional, multilayer is unidirectional or the multi-layer and multi-directional assembly is paved into beam, plate or hull shape shape.
4. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that composite horizontal that the vertical web of composite (4) that the described composite web composite transversal web (3) that to be fiber cloth (6) form with resin, fiber cloth (6) and resin form, fiber cloth (6) and resin form is to web (5).
5. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described core (1) is foam, cork wood, polyurethane foam, polyvinyl chloride foam, carbon foam, Balsa wood, paulownia wood or China fir.
6. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described panel (2) for the fiber material, the laying direction of the fiber cloth of panel (2) be single shaft to, twin shaft to or multiaxis to.
7. space according to claim 6 fiber web enhanced type composite material sandwich structure spare is characterized in that described fiber material is carbon fiber, glass fibre, aramid fiber or hybridization fiber cloth.
8. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described resin is vinylite, epoxy resin, phenolic resins or unsaturated polyester (UP).
9. space according to claim 1 fiber web enhanced type composite material sandwich structure spare is characterized in that described fiber cloth (6) is glass fabric, carbon cloth, aramid fiber or hybridization fiber cloth.
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| CN2010102443133A CN101954761A (en) | 2010-08-03 | 2010-08-03 | Spatial fiber web-reinforced composite material sandwich structure part |
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| CN102303432A (en) * | 2011-07-07 | 2012-01-04 | 中国人民解放军国防科学技术大学 | Wave transmission material of band-pass type resin-based interlayer structure and preparation method thereof |
| CN102794795A (en) * | 2012-09-06 | 2012-11-28 | 南京工业大学 | Composite material sandwich structure containing bamboo wood transition layer |
| CN103696367A (en) * | 2014-01-14 | 2014-04-02 | 株洲时代新材料科技股份有限公司 | Composite material structural piece and manufacturing method thereof |
| CN103737946A (en) * | 2014-01-03 | 2014-04-23 | 中国人民解放军国防科学技术大学 | Forming method of resin matrix composite with double layers of foam sandwich structures |
| CN104786294A (en) * | 2015-01-26 | 2015-07-22 | 浙江联洋新材料股份有限公司 | Production technology of structural core material set |
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Application publication date: 20110126 |