CN102152525A - Method for preparing three-dimensional orthogonal woven foam sandwich composite material - Google Patents
Method for preparing three-dimensional orthogonal woven foam sandwich composite material Download PDFInfo
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- CN102152525A CN102152525A CN2010105977170A CN201010597717A CN102152525A CN 102152525 A CN102152525 A CN 102152525A CN 2010105977170 A CN2010105977170 A CN 2010105977170A CN 201010597717 A CN201010597717 A CN 201010597717A CN 102152525 A CN102152525 A CN 102152525A
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Abstract
The invention relates to a method for preparing a three-dimensional orthogonal woven foam sandwich composite material, and is characterized by comprising the following concrete steps: (1) weaving a three-dimensional orthogonal fabric into an upper panel and a lower panel, ranking at least two foam blocks between the upper panel and the lower panel, binding and fixing each foam block between the upper panel and the lower panel through binding yarn to obtain a soft three-dimensional orthogonal woven foam sandwich fabric; and (2) soaking the soft three-dimensional orthogonal woven foam sandwich fabric obtained in the step (1) in resins by adopting a vacuum auxiliary resin transfer molding method, heating to solidify the resins and cutting off burrs to obtain a soft three-dimensional orthogonal woven foam sandwich composite material. The product prepared by the method provided by the invention has good integral performance.
Description
Technical field
The present invention relates to a kind of preparation method of three-dimensional orthogonal woven foam layer composite, belong to the design and the preparing technical field of interlayer composite material.
Background technology
Sandwich is since being born the forties in 20th century, because it has high specific strength and high specific modulus, endurance, anti-shake performance is good, and can absorb shock loading effectively, can pass through suitable panel, core and adhesive again simultaneously, satisfy the requirement under the various service conditions, therefore be the structure " material " in the aerospace engineering always.Recently in year, because the material cost of sandwich constantly descends, moulding process reaches its maturity, and this " at high price " product has in the past progressively entered the every field of national economy.The application of sandwich has at present spreaded all over aviation, space flight, communications and transportation, building, electronics industry and physical culture and amusement circles.
The preparation research method of foam layer composite is a lot of at present.The patent of application number 200910045854.0 is that to strengthen hollow composite material with the resin-based fibre three-dimensional be matrix, adopts the reinforced and lamination foaming technique of vacuum aided, makes the foam layer composite at composite hollow position place's filling expansion type phenolic resins.Research being arranged with the upper and lower panel of carbon fiber layer pressing plate as sandwich, is an integral body to sewing yarn with upper and lower panel and core stitching with z, comes the globality of implementation structure.
The characteristics of sandwich on mechanics are that the top layer is main bearing bed, and the effect of core is two sheet surface layers to be strutted be bonded together securely with the top layer and bear shearing force, wherein the adhesive bond of core and surface layer is one of key technology, have only both effective combinations, could realize the superperformance of sandwich.For the panel of primary load bearing, traditional laminate has the defective of easy layering, and the three-dimensional orthogonal panel layer among the present invention strengthens yarn and participates in weaving to having at Z, make its mechanical property at Z to being greatly improved the intrinsic advantage that is difficult for layering.On the other hand, traditional gluing mode of foam core material and upper and lower panel is difficult for realizing good effect that also there are break-off in core and upper and lower panel, become stressed weakness.Adopt three-dimensional orthogonal woven to make surface layer and whole sandwich among the present invention, not only the three-dimensional orthogonal panel layer is compared with traditional laminated surface layer, the characteristics that are difficult for layering are arranged, rectangular and the upper and lower panel of foam is combined with woven mode to yarn with Z simultaneously, make the globality of sandwich better.
Summary of the invention
The purpose of this invention is to provide a kind of preparation method of the three-dimensional orthogonal woven foam layer composite of mechanical property preferably that has.
In order to achieve the above object, the invention provides a kind of preparation method of three-dimensional orthogonal woven foam layer composite, it is characterized in that concrete steps are:
The first step: weave the three-dimensional orthogonal fabric as top panel and lower panel, at least two foams are arranged in parallel between top panel and the lower panel, and with bundled yarn every foam binding being fixed in the above obtains lightweight three-dimensional orthogonal woven foam layer fabric between plate and the lower panel;
Second step: the lightweight three-dimensional orthogonal woven foam layer fabric that the first step is obtained soaks in resin, and heating makes resin solidification, obtains three-dimensional orthogonal woven foam layer composite.
Further, described bundled yarn passes top panel and lower panel and edge and twines every foam perpendicular to the direction of top panel and lower panel.
Bundled yarn described in the first step is made by aramid fiber, glass fibre or basalt fibre.The fineness of bundled yarn is 450-3300 Dtex.
Foam described in the first step is phenol formaldehyde foam or polystyrene foam.
Resin described in second step is a phenolic resins.
The thickness of foam is 2mm-40mm.
The thickness of the lightweight three-dimensional orthogonal woven foam layer composite of the second step gained is 4mm-50mm.
Adopt three-dimensional orthogonal woven to make surface layer and whole sandwich among the present invention, its three-dimensional orthogonal panel layer is compared with traditional laminated surface layer, and the characteristics that are difficult for layering are arranged.Strengthen yarn the Z mechanical property of upper and lower panel is improved, rectangular and upper and lower panel combines with woven mode bundled yarn with foam, makes its globality better.Adopt the vacuum assisted resin transfer method to prepare composite panel among the present invention, also can stick with paste and the forming method of model combination simultaneously with hand.
Beneficial effect of the present invention is as follows: the preparation method is fairly simple, and cost is lower, and stable performance can be satisfied application requirements well; Adopt the manufacture method of three-dimensional orthogonal woven, effectively improved the binding ability between the performance of panel own and foam and panel; Except that the advantage with interlayer composite material, also the performance because of selected materials makes last interlayer composite material have the good flame performance; Have very strong design, can change corresponding structure design size and material selection according to concrete application requirements.
Description of drawings
Fig. 1 is the panel profile;
Fig. 2 is warp thread direction foam arrangement mode figure;
Fig. 3 is a three-dimensional orthogonal woven foam layer composite structure schematic diagram;
Fig. 4 is the method for weaving schematic diagram.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment 1
A kind of three-dimensional orthogonal woven foam layer flame-retardant composite, as shown in Figure 3, be three-dimensional orthogonal woven foam layer composite structure schematic diagram, describedly comprise top panel 1, lower panel 3 and by be fixed in the above the foam that is arranged in parallel 2 between plate 1 and the lower panel 3 of bundled yarn 4.Bundled yarn 4 passes top panel 1 and lower panel 3 and edge and twines every foam 2 perpendicular to the direction of top panel 1 and lower panel 3.As shown in Figure 2, be warp thread direction foam arrangement mode figure, top panel 1, lower panel 3 and bundled yarn 4 select for use aramid fiber as material, and foam 2 is a phenol formaldehyde foam.Bundled yarn 4 fineness are 450Dtex, and the thickness of foam 2 is 25mm, and the thickness of three-dimensional orthogonal woven foam layer composite is 30mm.According to the different designs of material and structure, the bending modulus of its sandwich composite can be at 10Gpa-50GPa, and bending strength can be at 50-150MPa.
As shown in Figure 1, be the panel profile, the warp thread 6 of top panel 1 and lower panel 3 and the vertical respectively arrangement that interweaves of weft yarn 7, along the thickness direction of three dimensional fabric be Z to, have respectively Z to enhancing yarn 5 and Z to bundled yarn 4.Strengthen yarn 5 top panel 1 and the mechanical property of lower panel 3 on thickness direction are made moderate progress, overcome the shortcoming of the easy layering of laminate simultaneously.Foam 2 is to weave in sandwich under the binding effect of bundled yarn 4 with the cuboid form of certain design size, bundled yarn 4 is with certain binding density that cycle period is realized foam of weaving, thereby foam 2 and top panel 1, lower panel 3 are better combined, make sandwich that good globality be arranged.As shown in Figure 4, being the method for weaving schematic diagram, be that 2 layers of warp thread and 3 layers of weft yarn interweave with panel is example, and top panel 1 and lower panel 3 are respectively all by 6,3 layers of weft yarn of 2 layers of warp thread 7 with strengthen yarn 5 and be interwoven.In weaving process, as conventional three-dimensional woven, strengthen yarn 5 and bundled yarn 4 all by heald frame control, under the effect of heald frame, realize interweaving up and down.The circulation that interweaves of bundled yarn 4 is decided by the filling density of adopting foam size (width) and panel.Bundled yarn 4 is realized once interweaving and is realized binding effect to foam 2 when putting into foam 2, and bundled yarn 4 float length equal the width of foam 2 in theory.Warp count: 4-8 root/cm, weft count: 4-8 root/cm.
Adopt vacuum assisted resin transfer formation method, the three-dimensional foam interlayer fabric drying that is made into is weighed, be placed on then on the glass template that scribbles releasing agent, coat sealing, notice that the sealing in injection port and exit is intact with vacuum bag.After the mould sealing is intact, starts vavuum pump and confirm no air leak.Used pressure is-40 to-80KPa.Vacuumize and begin to inject phenolic resins after reaching the certain vacuum degree, resin soaks into evenly fully back heat treatment 2h in 70 ℃ baking oven, makes it be subjected to heat cure.Solidifying back excision burr gets final product.
A kind of three-dimensional orthogonal woven foam layer thermal insulation composite material, as shown in Figure 3, be three-dimensional orthogonal woven foam layer composite structure schematic diagram, describedly comprise top panel 1, lower panel 3 and by be fixed in the above the foam that is arranged in parallel 2 between plate 1 and the lower panel 3 of bundled yarn 4.Bundled yarn 4 passes top panel 1 and lower panel 3 and edge and twines every foam 2 perpendicular to the direction of top panel 1 and lower panel 3.As shown in Figure 2, be warp thread direction foam arrangement mode figure, top panel 1, lower panel 3 and bundled yarn 4 select for use glass fibre as material, and foam 2 is a polystyrene foam.Bundled yarn 4 fineness are 3300 Dtex, and the thickness of foam 2 is 40mm, and the thickness of three-dimensional orthogonal woven foam layer composite is 50mm.
As shown in Figure 1, be the panel profile, the warp thread 6 of top panel 1 and lower panel 3 and the vertical respectively arrangement that interweaves of weft yarn 7, along the thickness direction of three dimensional fabric be Z to, have respectively Z to enhancing yarn 5 and Z to bundled yarn 4.Strengthen yarn 5 top panel 1 and the mechanical property of lower panel 3 on thickness direction are made moderate progress, overcome the shortcoming of the easy layering of laminate simultaneously.Foam 2 is to weave in sandwich under the binding effect of bundled yarn 4 with the cuboid form of certain design size, bundled yarn 4 is with certain binding density that cycle period is realized foam of weaving, thereby foam 2 and top panel 1, lower panel 3 are better combined, make sandwich that good globality be arranged.As shown in Figure 4, being the method for weaving schematic diagram, be that 2 layers of warp thread and 3 layers of weft yarn interweave with panel is example, and top panel 1 and lower panel 3 are respectively all by 6,3 layers of weft yarn of 2 layers of warp thread 7 with strengthen yarn 5 and be interwoven.In weaving process, as conventional three-dimensional woven, strengthen yarn 5 and bundled yarn 4 all by heald frame control, under the effect of heald frame, realize interweaving up and down.The circulation that interweaves of bundled yarn 4 is decided by the filling density of adopting foam size (width) and panel.Bundled yarn 4 is realized once interweaving and is realized binding effect to foam 2 when putting into foam 2, and bundled yarn 4 float length equal the width of foam 2 in theory.Warp count: 4-8 root/cm, weft count: 4-8 root/cm.
Adopt vacuum assisted resin transfer formation method, the three-dimensional foam interlayer fabric drying that is made into is weighed, be placed on then on the glass template that scribbles releasing agent, coat sealing, notice that the sealing in injection port and exit is intact with vacuum bag.After the mould sealing is intact, starts vavuum pump and confirm no air leak.Used pressure is-40 to-80KPa.Vacuumize and begin to inject phenolic resins after reaching the certain vacuum degree, resin soaks into evenly fully back heat treatment 2h in 70 ℃ baking oven, makes it be subjected to heat cure.Solidifying back excision burr gets final product.
A kind of three-dimensional orthogonal woven foam layer composite that is used for the lightweight of component materials such as ships, as shown in Figure 3, be three-dimensional orthogonal woven foam layer composite structure schematic diagram, describedly comprise top panel 1, lower panel 3 and by be fixed in the above the foam that is arranged in parallel 2 between plate 1 and the lower panel 3 of bundled yarn 4.Bundled yarn 4 passes top panel 1 and lower panel 3 and edge and twines every foam 2 perpendicular to the direction of top panel 1 and lower panel 3.As shown in Figure 2, be warp thread direction foam arrangement mode figure, top panel 1, lower panel 3 and bundled yarn 4 select for use basalt fibre as material, and foam 2 is a phenol formaldehyde foam.Bundled yarn 4 fineness are 2000 Dtex, and the thickness of foam 2 is 20mm, and the thickness of three-dimensional orthogonal woven foam layer composite is 30mm.
As shown in Figure 1, be the panel construction schematic diagram, the warp thread 6 of top panel 1 and lower panel 3 and the vertical respectively arrangement that interweaves of weft yarn 67, along the thickness direction of three dimensional fabric be Z to, have respectively Z to enhancing yarn 5 and Z to bundled yarn 4.Strengthen yarn 5 top panel 1 and the mechanical property of lower panel 3 on thickness direction are made moderate progress, overcome the shortcoming of the easy layering of laminate simultaneously.Foam 2 is to weave in sandwich under the binding effect of bundled yarn 4 with the cuboid form of certain design size, bundled yarn 4 is with certain binding density that cycle period is realized foam of weaving, thereby foam 2 and top panel 1, lower panel 3 are better combined, make sandwich that good globality be arranged.As shown in Figure 4, being the method for weaving schematic diagram, be that 2 layers of warp thread and 3 layers of weft yarn interweave with panel is example, and top panel 1 and lower panel 3 are respectively all by 6,3 layers of weft yarn of 2 layers of warp thread 7 with strengthen yarn 5 and be interwoven.In weaving process, as conventional three-dimensional woven, strengthen yarn 5 and bundled yarn 4 all by heald frame control, under the effect of heald frame, realize interweaving up and down.The circulation that interweaves of bundled yarn 4 is decided by the filling density of adopting foam size (width) and panel.Bundled yarn 4 is realized once interweaving and is realized binding effect to foam 2 when putting into foam 2, and bundled yarn 4 float length equal the width of foam 2 in theory.Warp count: 4-8 root/cm, weft count: 4-8 root/cm.
Adopt vacuum assisted resin transfer formation method, the three-dimensional foam interlayer fabric drying that is made into is weighed, be placed on then on the glass template that scribbles releasing agent, coat sealing, notice that the sealing in injection port and exit is intact with vacuum bag.After the mould sealing is intact, starts vavuum pump and confirm no air leak.Used pressure is-40 to-80KPa.Vacuumize and begin to inject phenolic resins after reaching the certain vacuum degree, resin soaks into evenly fully back heat treatment 2h in 70 ℃ baking oven, makes it be subjected to heat cure.Solidifying back excision burr gets final product.
Claims (8)
1. the preparation method of a three-dimensional orthogonal woven foam layer composite is characterized in that, concrete steps are:
The first step: weave the three-dimensional orthogonal fabric as top panel (1) and lower panel (3), at least two foams (2) are arranged in parallel between top panel (1) and the lower panel (3), and with bundled yarn (4) every foam (2) binding being fixed in the above obtains lightweight three-dimensional orthogonal woven foam layer fabric between plate (1) and the lower panel (3);
Second step: the lightweight three-dimensional orthogonal woven foam layer fabric that the first step is obtained soaks in resin, and heating makes resin solidification, obtains three-dimensional orthogonal woven foam layer composite.
2. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1, it is characterized in that described bundled yarn (4) passes top panel (1) and lower panel (3) and edge and twines every foam (2) perpendicular to the direction of top panel (1) and lower panel (3).
3. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the bundled yarn described in the first step (4) is made by aramid fiber, glass fibre or basalt.
4. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the fineness of bundled yarn (4) is 450-3300 Dtex.
5. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the foam described in the first step (2) is phenol formaldehyde foam or polystyrene foam.
6. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the thickness of foam (2) is 2mm-40mm.
7. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the resin described in second step is a phenolic resins.
8. the preparation method of three-dimensional orthogonal woven foam layer composite as claimed in claim 1 is characterized in that, the thickness of the three-dimensional orthogonal woven foam layer composite of the second step gained is 4mm-50mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105977170A CN102152525B (en) | 2010-12-21 | 2010-12-21 | Method for preparing three-dimensional orthogonal woven foam sandwich composite material |
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| CN2010105977170A CN102152525B (en) | 2010-12-21 | 2010-12-21 | Method for preparing three-dimensional orthogonal woven foam sandwich composite material |
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| CN102152525B CN102152525B (en) | 2013-12-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045569A (en) * | 2014-05-15 | 2014-09-17 | 赛鼎工程有限公司 | Process for synthesis of toluenediamine by low pressure hydrogenation of dinitrotoluene, catalyst and preparation method of catalyst |
| CN105235304A (en) * | 2015-08-25 | 2016-01-13 | 盐城工学院 | Three-dimensional orthogonal nalgrass composite material plate and molding method thereof |
| CN108085823A (en) * | 2018-01-12 | 2018-05-29 | 东华大学 | Loop construction collection thermal evaporation filling fabric and its preparation, application method and purposes |
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| CN1406745A (en) * | 2001-08-22 | 2003-04-02 | 方大集团股份有限公司 | Cyanuramide foam composite plates and manufacture thereof |
| CN101003190A (en) * | 2007-01-22 | 2007-07-25 | 哈尔滨工业大学 | Fiber enhanced foam core filled composite material plate, and fabricating method |
| CN101076445A (en) * | 2003-12-17 | 2007-11-21 | 大金工业株式会社 | Fire-retardant composite material |
| CN101480832A (en) * | 2009-01-23 | 2009-07-15 | 苏州美克思科技发展有限公司 | Technique for producing phenolic foam sandwich fibre three-dimensional reinforced composite material |
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2010
- 2010-12-21 CN CN2010105977170A patent/CN102152525B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406745A (en) * | 2001-08-22 | 2003-04-02 | 方大集团股份有限公司 | Cyanuramide foam composite plates and manufacture thereof |
| CN101076445A (en) * | 2003-12-17 | 2007-11-21 | 大金工业株式会社 | Fire-retardant composite material |
| CN101003190A (en) * | 2007-01-22 | 2007-07-25 | 哈尔滨工业大学 | Fiber enhanced foam core filled composite material plate, and fabricating method |
| CN101480832A (en) * | 2009-01-23 | 2009-07-15 | 苏州美克思科技发展有限公司 | Technique for producing phenolic foam sandwich fibre three-dimensional reinforced composite material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045569A (en) * | 2014-05-15 | 2014-09-17 | 赛鼎工程有限公司 | Process for synthesis of toluenediamine by low pressure hydrogenation of dinitrotoluene, catalyst and preparation method of catalyst |
| CN104045569B (en) * | 2014-05-15 | 2016-04-06 | 赛鼎工程有限公司 | By the dinitrotoluene (DNT) low-voltage hydrogenation synthesis technique of tolylene diamine and the method for making of catalyzer and catalyzer |
| CN105235304A (en) * | 2015-08-25 | 2016-01-13 | 盐城工学院 | Three-dimensional orthogonal nalgrass composite material plate and molding method thereof |
| CN108085823A (en) * | 2018-01-12 | 2018-05-29 | 东华大学 | Loop construction collection thermal evaporation filling fabric and its preparation, application method and purposes |
| CN108085823B (en) * | 2018-01-12 | 2022-10-11 | 东华大学 | Coil structure heat collection evaporation filling fabric and preparation, use method and application thereof |
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