CN100503228C - Alveolus type interlayer structure of the composite material - Google Patents

Alveolus type interlayer structure of the composite material Download PDF

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Publication number
CN100503228C
CN100503228C CNB2007100213987A CN200710021398A CN100503228C CN 100503228 C CN100503228 C CN 100503228C CN B2007100213987 A CNB2007100213987 A CN B2007100213987A CN 200710021398 A CN200710021398 A CN 200710021398A CN 100503228 C CN100503228 C CN 100503228C
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China
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core
panel
resin
fiber
composite material
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Expired - Fee Related
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CNB2007100213987A
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CN101041278A (en
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刘伟庆
方海
万里
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Nanjing Tech University
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Nanjing Tech University
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Abstract

The invention relates to a cogging composite sandwich structure comprising core material (1) and face plate (2), characterized in that net concave grooves (3) are set at top and bottom faces of core material (1) and face plates (2) are put on top and bottom faces of core material (1) by resin. Compared with other products, the biggest characteristic is that concave grooves filled with resin fully can enhance the anti-stripping ability of face plates and core material obviously and it makes the whole forced performance and the usage effect of composite sandwich structure be improved obviously. It is applied in aerospace, ship and vehicle so on universally and it is also applied in building fields such as roof board, building template and wall material so on.

Description

The Alveolus type composite material sandwich structure
Technical field
The present invention relates to composite material sandwich structure beam, plate, hull structure component, specifically is a kind of Alveolus type composite material sandwich structure, and it is widely used in fields such as vehicle, building, as roof boarding, building template, materials for wall, vehicle dividing plate, base plate etc.
Background technology
Structural members such as composite material sandwich structure beam, plate, shell are 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 metal decking etc. of lamination; The centre is a core, for sandwich provides enough cross sectional moment of inertias, 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 had both made full use of fibrous material intensity height, lightweight advantage, again dexterously by cross sectional moment of inertia that light-weight filler obtained, can reach desirable structural behaviour (as intensity, rigidity and impact flexibility etc.), at present it has obtained extensive use on aircraft, guided missile, satellite, spaceship and space shuttle, as the aircraft floor etc.Simultaneously, because it has the incomparable characteristics of other materials such as specific strength and specific stiffness height, designability are strong, and be adapted to lightweight, at a high speed, the development trend of characteristic such as safety, antifatigue, corrosion-resistant, stealth, the application of composite material sandwich structure more and more widely 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, even be used for the ramber of NASA moon lander; 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, composite material sandwich structure is many to be core with the honeycomb, but the panel of honeycomb sandwich construction and the contact area of core are little, therefore its adhesive property relatively a little less than, thereby cause the performance such as antistripping, antifatigue of sandwich lower, in addition if panel impaired after, comb core is intake easily and be difficult for to be discharged, thereby serious consequence such as causes panel to come unstuck peeling off.And be in the sandwich of core with foam and cork wood, the interface simple structure of core and panel, in use, core and panel are peeled off easily, thereby make that this sandwich form can extensive use.
Summary of the invention
Purpose of the present invention then is at the deficiency of the technology such as interface simple structure of present foam and cork wood core and panel, and a kind of Alveolus type composite material sandwich structure is provided, and can significantly improve the antistripping ability between core and the panel.
Purpose of the present invention can reach by following measure:
A kind of Alveolus type composite material sandwich structure, it comprises core 1, has latticed groove 3 in the upper and lower surface of core 1, is equipped with panel 2 in the upper and lower surface of core 1 by resin.
Wherein, described groove 3 can be with carrying out any reasonable Arrangement according to concrete stressing conditions, and described groove 3 is preferably parallel or crossing layout; Described groove 3 is quadrature arrangement more preferably.
Described groove 3 can be pointed, rectangle, open-delta or other arbitrary shapes.
Described core 1 is foam, cork wood or other any materials, and it comprises: polyurethane foam, polyvinyl chloride foam, carbon foam, Balsa wood, paulownia wood, China fir, oak or glued board.
Described panel 2 is fiber, metal or other any materials, and it comprises: single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber, hybridization fiber cloth, aluminium sheet or steel plate.
Described resin comprises: unsaturated polyester (UP), vinylite, epoxy resin or phenolic resins.
The thickness that described panel 2 is arranged in core 1 upper and lower surface both can be consistent also can be inconsistent and also the laying direction and the number of plies fiber layer of cloth can adjust flexibly as required.
Above-mentioned Alveolus type composite material sandwich structure can adopt method as described below to prepare:
A. open the groove 3 of latticed layout in the upper and lower surface of foam and cork wood core 1;
B. the core 1 that disposes can be processed into beam, plate, hull shape shape according to the member needs;
C. one or more layers fiber cloth is layed in the upper and lower surface of core 1, resin is circulated in vacuum bag or the mould by vacuum bag moulding process, vacuum guiding and forming technique or RTM moulding process;
D. after treating the resin solidification moulding, take out, the fiber layer of cloth becomes fiber panel with resin solidification, and groove 3 promptly fills up resin;
F. wherein, step c, d also can be replaced by this step: in type fiberboard or metallic plate are stuck with paste technology or vacuum bag technological forming by hand, can obtain the Alveolus type composite material sandwich structure that cementitiousness is significantly improved between a kind of panel and the core by resin with panel 2 and core 1 are mutually bonding.
The present invention has following advantage:
Structural member with Alveolus type composite material sandwich structure beam of the present invention, plate, shell etc. is compared with other products, its maximum characteristics are that the groove that fills up resin can obviously strengthen the antistripping ability between panel and the core, and the holistic resistant behavior of composite material sandwich structure is significantly improved.
Description of drawings
Fig. 1 is one of Alveolus type composite material sandwich structure beam, plate, hull structure component schematic diagram.
Fig. 2 is two of Alveolus type composite material sandwich structure beam, plate, a hull structure component schematic diagram.
Fig. 3 is for opening the schematic diagram of pointed groove in the upper and lower surface of foam and cork wood core.
Fig. 4 is for having the structural representation of rectangular recess on the core.
Fig. 5 is for having the structural representation of open delta connected in star on the core.
In the accompanying drawing: 1 is core, comprising: foam (polyurethane, polyvinyl chloride, carbon foam etc.) and cork wood (Balsa wood, paulownia wood, China fir, oak, glued board etc.); 2 is panel, comprises fiber panel (fiberglass panel, carbon fiber panel etc.) and metal decking (aluminium matter, steel etc.); 3 is groove, can be arranged to pointed, rectangular recess or open-delta as required.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described:
Embodiment 1
As shown in Figure 1, 2, 3, Alveolus type composite material sandwich structure of the present invention, it comprises the core 1 of polyvinyl chloride foam material, have the pointed groove 3 of quadrature arrangement in the upper and lower surface of core 1, irritate in the groove 3 epoxy resin is arranged, upper and lower surface at core 1 all is equipped with two-layer twin shaft to carbon fibre cloth layer, with the panel 2 of epoxy resin formation carbon fiber.
Embodiment 2
Alveolus type composite material sandwich structure of the present invention, it comprises the core 1 of polyurethane foam material, upper and lower surface at core 1 has transverse moment connected in star 3 that is parallel to each other and the longitudinal moment connected in star 3 that is parallel to each other, but transverse moment connected in star 3 and longitudinal moment connected in star 3 are acute angle and intersect, irritate in the groove 3 vinylite is arranged, upper surface at core 1 is equipped with three layers of four-axial glass fibre layer of cloth, at the two-layer aramid fiber layer of cloth of the lower surface of core 1, fiber layer of cloth and vinylite are solidified into panel 2.
As described in embodiment 1, but when recessing 3, can be according to stressed needs, the number of groove 3 and arrangement mode can be controlled flexibly.
Embodiment 3
Alveolus type composite material sandwich structure of the present invention, it comprises the core 1 of paulownia wood material, opens the open delta connected in star 3 of quadrature in the upper and lower surface of core 1, irritating in the groove 3 has phenolic resins, all is equipped with the panel 2 of aluminium matter on the upper and lower surface of core 1.
As described in embodiment 1,2, can be consistent but be arranged in the thickness of the panel 2 of core 1 upper and lower surface, also can be inconsistent.
The preparation method of above-mentioned Alveolus type composite material sandwich structure is as follows:
A. open the groove 3 of quadrature arrangement (shape of groove can comprise: pointed, rectangle, open-delta etc.) in the upper and lower surface of foam (comprising: polyurethane, polyvinyl chloride, carbon foam etc.) and cork wood (comprising: Balsa wood, paulownia wood, China fir, oak, glued board etc.) core 1;
B. the core 1 that disposes can be processed into beam, plate, hull shape shape according to the member needs;
C. with one or more layers fiber cloth (comprising: single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber and hybridization fiber cloth etc.) be the upper and lower surface that panel 2 is layed in core 1, and integral body places vacuum bag or mould;
D. 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, as required, can be with resin solidification under normal temperature and pressure or HTHP situation, after treating the resin solidification moulding, take out member;
E. wherein, step c, d also can be replaced by this step: in type fiberboard (comprising: glass mat, carbon fiber board, aramid fiber plate etc.) or metallic plate (comprising: aluminium sheet, steel plate etc.) are stuck with paste technology or vacuum bag technological forming by hand, and by adhesive such as resins that panel 2 is mutually bonding with core 1.
At this moment, the groove 3 that fills up resin can obviously strengthen the antistripping ability between panel 2 and the core 1, can obtain novel Alveolus type composite material sandwich structure.
Wherein: the kind of core 1 and height, shape, size, position and the arrangement mode of groove 3, the kind and the thickness of panel 2, the kind of the laying direction of fiber cloth and the number of plies, resin all can be adjusted as required flexibly.

Claims (1)

1, a kind of Alveolus type composite material sandwich structure, it comprises core (1), panel (2), it is characterized in that having latticed groove (3) in the upper and lower surface of core (1), groove (3) is parallel or quadrature arrangement, upper and lower surface at core (1) is equipped with panel (2) by resin, described groove (3) is pointed, rectangle or open-delta, the material of described core (1) adopts polyurethane foam, polyvinyl chloride foam, the carbon foam, paulownia wood, China fir, oak or glued board, described panel (2) is fiber panel or metal decking, wherein fiber panel be single shaft to, twin shaft to or multiaxis to carbon fiber, glass fibre, aramid fiber or hybridization fiber cloth, metal decking is aluminium sheet or steel plate, described panel (2) is by the upper and lower surface of resin bonding in core (1), and described resin comprises: unsaturated polyester (UP), vinylite, epoxy resin or phenolic resins.
CNB2007100213987A 2007-04-10 2007-04-10 Alveolus type interlayer structure of the composite material Expired - Fee Related CN100503228C (en)

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CN100503228C true CN100503228C (en) 2009-06-24

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* Cited by examiner, † Cited by third party
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CN102350840A (en) * 2011-09-06 2012-02-15 溧阳市山湖实业有限公司汽车装饰材料分公司 Polyurethane composite plate
CN103144361A (en) * 2013-04-01 2013-06-12 浙江联洋复合材料有限公司 Sandwiched composite sheet and manufacturing method thereof

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US20140227928A1 (en) * 2011-09-02 2014-08-14 Bayer Intellectual Property Gmbh Composite material and method for producing same
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CN106696383B (en) * 2015-11-17 2018-09-04 珠海航太科技有限公司 The technique for making light aerocraft composite material high strength degree girder
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CN102350840A (en) * 2011-09-06 2012-02-15 溧阳市山湖实业有限公司汽车装饰材料分公司 Polyurethane composite plate
CN103144361A (en) * 2013-04-01 2013-06-12 浙江联洋复合材料有限公司 Sandwiched composite sheet and manufacturing method thereof

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