CN1042754C - Multilayer woven-fabric and its composite material, forming mould and method - Google Patents
Multilayer woven-fabric and its composite material, forming mould and method Download PDFInfo
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- CN1042754C CN1042754C CN 97112582 CN97112582A CN1042754C CN 1042754 C CN1042754 C CN 1042754C CN 97112582 CN97112582 CN 97112582 CN 97112582 A CN97112582 A CN 97112582A CN 1042754 C CN1042754 C CN 1042754C
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Abstract
The present invention relates to a multi-layer woven fabric and composite materials thereof. The multi-layer woven fabric is characterized in that two of four warp threads 1 arranged at an interwoven point 4 between contiguous layers of the multi-layer woven fabric 3 are not interwoven with weft threads 2 arranged at the interwoven point 4 and are straight; the other two of the weft threads 1 are interwoven with two layers of weft threads 2 arranged at the interwoven point 4. Therefore, two layers or even a plurality of layers of the multi-layer woven fabrics 3 are connected, and interlayer gaps 5 are staggered among the layers which are not interwoven. With the multi-layer woven fabric 3 of the present invention as a framework, composite materials with even texture, square hole shape and favorable mechanical property can be manufactured through using a shaping mould specially designed for matching with the present invention and using a shaping method of support hole forming method of the present invention.
Description
The present invention relates to multi-ply fabrics, International Classification of Patents intends being DO3D11/00.
Cellular board is a kind of porous sheet material, because the cross section in hole is regular hexagon, and similar natural cellular and gaining the name.Characteristics such as this material has in light weight, and resistance to pressure is good can be made the packing material of aircraft, and the sandwich material of building also can be made the conveyance conduit of fluid." reinforced composite handbook (Stuart M Lee, Handbook of Composite Reinforcement, VCH Publishers Inc., New York, NewYork, USA, 1993, introduced the structure and the preparation method of legacy cellular plate in P177): a kind of is aluminium foil or cardboard Method for bonding, this method is at first stacked with aluminium foil or cardboard, be coated with adhesive in the corresponding position, drawing and setting longitudinally just can obtain cellular sheet material (referring to Fig. 1) again.The cellular sheet material that adopts this method to make, defective are that the shape in hole can not keep Founder, profile is not attractive in appearance, withstand voltage and overall performance is relatively poor, and ftracture from the bonding place easily.Another kind is the corrugated sheet Method for bonding, and this method can not make eyelet Founder, the inaesthetic shortcoming of profile for overcoming preceding method, has adopted elder generation with aluminium foil or the extruding of cardboard process, makes corrugated sheet, again with the bonding method (referring to Fig. 2) of making cellular board of adhesive.This cellular board outward appearance is neat, the eyelet Founder, but withstand voltage still relatively poor with globality, and also easily ftracture from the bonding place.The cellular board that these two kinds of methods are made, material is single, bonding shaping, aspects such as its intensity, resistance to pressure, globality and anti-interlayer shear are all not ideal enough, can not be called composite.
Introduced for Europe patent EP88105206.2 number and a kind ofly utilized weaving, woven whole honeycomb skeleton earlier, made the new method of composite cellular board again with resin compounded with yarn.This method utilizes tractive that the hole is opened after utilizing weaving to make warp thread 1, weft yarn 2 be woven into woven fabric 3 (referring to Fig. 3), immerses resin solution then, and taking-up is dried, and can obtain cellular composite.This molding mode can make the structural integrity of composite improve, and intensity increases, thereby has improved bearing capacity, has enlarged the range of application of material.Though this material has improved the performance of cellular board, this method still exists following shortcoming: 1. this multiply cloth 3 is that fabric by individual layer is formed by connecting in the part, and every layer is all adopted plain weave.In two-layer junction, used rib weave, make the density irregularity of fabric 3; 2. in the interlayer junction of multiply cloth 3, warp thread interweaves with weft yarn in pairs, and warp and weft interweaving is more violent, and warp count is bigger, owing to the variation of thread density, can cause the inhomogeneous infiltration of resin, thereby influence the performance of final products with resin compounded the time; 3. this woven fabric has used the individual layer weft yarn in the interlayer junction, thereby the intensity of interlayer junction is lower; 4. because of this method adopts tractive method pore-forming, the shape in its hole can not guarantee neat and well spaced unanimity, therefore also influences performance of composites and outward appearance.
The objective of the invention is at above-mentioned the deficiencies in the prior art, provide a kind of quality evenly, the multi-ply fabrics of hole shape standard, good mechanical performance, it can be used for doing the skeleton of composite.
The objective of the invention is following realization:
Design a kind of multi-ply fabrics 3, every layer is still adopted plain weave, it is characterized in that: in every four warp thread 1 that face 4 places, two-layer fabrics intertwined point mutually, have two warp thread 1 not interweave with the weft yarn 2 of corresponding position, linear state is arranged.1 two-layer weft yarn 2 with the corresponding position of other two warp thread interweaves, and the two-layer fabrics of this corresponding position is linked together, and then multiply cloth is interweaved be connected to become whole multi-ply fabrics 3; Facing mutually of linking together is not staggered to form interlayer seam 5 between the two-layer fabrics interweaving.
The technology of the present invention prior art
Warp knitting broken end number (root/10M) 2 12
Make the clear substantially warp thread fluffing of shed open definition, shed open is unclear
Harden in the even soft part of worker's fabric feeling
The configuration of skill yarn is evenly inhomogeneous
There is bubble the junction between multiple material section resin distribution conforming layer
It is coarse, irregular to close honeycomb eyelet smooth in appearance Founder
Edge edge sharp edge is fuzzy
Material honeycomb hole longest edge with
About the difference of minor face and normal limit＜2% 30%
Ratio (%) the highest by 50%
Power shear stress (MPa) 2.17 1.54
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Special
The property
As can be seen, because the characteristic good of woven fabric 3 of the present invention, be that the performance of composites of carcasing also just has inherent quality assurance and support with it.Simultaneously, in order further to strengthen or to improve performance of composites of the present invention, so that it has purposes widely, the present invention has designed the formation mould and the forming method of composite of the present invention in the lump.The formation mould of the supporting design of the present invention can make the honeycomb hole shaping of composite upright, edge clear, and smooth surface, outward appearance is beautiful.This to can be described as the external effect that support pore-forming process technology can reach be that stretching hole forming method technology is far away incomparable in the prior art, and the honeycomb hole of this standard geometry has also improved the inherent mechanical mass of composite greatly.The designed forming die structure of support pore-forming process of the present invention is simple, handling ease, and non-power consumption, its cost also are lower than the existing desired stretching-machine of stretching hole forming method technology.The composite material forming method of the present invention of the supporting design of the present invention is compared with the forming method of prior art, and it is simple and direct to have technology, processing ease, adaptable characteristics.
Below in conjunction with embodiment and accompanying drawing thereof in detail the present invention is described in detail:
Fig. 1 is traditional aluminium foil or cardboard Method for bonding cellular board manufacture method schematic diagram (for the contrast reference);
Fig. 2 is traditional corrugated sheet Method for bonding cellular board manufacture method schematic diagram (for the contrast reference);
The structural representation (for contrast reference) of Fig. 3 for making the multi-ply fabrics 3 of composite skeleton in the prior art;
Structural representation when Fig. 4 is three layers for multi-ply fabrics 3 of the present invention;
Structural representation when Fig. 5 (a) is six layers for multi-ply fabrics 3 of the present invention;
Structural representation behind ideal pore-forming when Fig. 5 (b) is six layers for multi-ply fabrics 3 of the present invention;
Structural representation when Fig. 6 is eight layers for multi-ply fabrics 3 of the present invention;
Fig. 7 is the formation mould cross sectional shape schematic diagram of composite of the present invention;
The forming method schematic diagram of Fig. 8 described formation mould making composite of the present invention for the present invention utilizes.
Key of the present invention is the multi-ply fabrics 3 of a kind of new construction of design, to replace prior art and to make the skeleton of composite with it.The starting point that the present invention improves prior art multi-ply fabrics 3 is the interlayer tie point or the intertwined point 4 of multi-ply fabrics 3.Specific design of the present invention is characterized in that: in every four warp thread 1 that face 4 places, two-layer fabrics intertwined point mutually, have two warp thread 1 not interweave with the weft yarn 2 of corresponding position, linear state is arranged; 1 two-layer weft yarn 2 with the corresponding position of other two warp thread interweaves, and the two-layer fabrics of this corresponding position is linked together, and then multiply cloth is interweaved be connected to become whole multi-ply fabrics 3; Facing mutually of linking together is not staggered to form interlayer seam 5 between the two-layer fabrics interweaving.Multi-ply fabrics of the present invention 3 every layer still adopt plain weave, but at every 4 places, two-layer intertwined point that face mutually, the 1 local linear state configuration of two warp thread is arranged, do not interweave with weft yarn 2, promptly in fabric, there is not bending deformation, the excessive phenomenon of local thread density of both having avoided the prior art fabric tissue to interweave and cause because of 1 while of four warp thread and weft yarn 2, self brute force that can keep warp thread again to greatest extent, simultaneously also can reduce the distortion that causes when member bears external force, member compound tense resin also can uniformly penetrating.On the other hand, 4 places, intertwined point of adjacent two layers in the multi-ply fabrics 3 of the present invention, two warp thread double-deck weft yarn 2 that interweaved helps to improve the adhesion of interlayer.
Be that embodiment elaborates with six layers of woven fabric 3 (referring to Fig. 5) now: raw material adopts continuous glass fibre, and warp, weft yarn 1,2 are 1200Tex.At 4 places, fabric intertwined point, the weft yarn 2 that interweaves between design level is 3 (be that 3 weft yarns are arranged on the every limit of honeycomb hole behind the pore-forming, this parameter is relevant with the size of described interlayer seam 5).The equipment that uses penetrates 6 warp thread as H212 type fly-shuttle loom, No. 45 reed, each dent, and warp count is 270/10cm on the machine, and weft count is 269.2/10cm; Use six shuttles when weaving, every shuttle is responsible for weaving one deck, and a shuttle can choosing wantonly in the adjacent two layers at 4 places, interlayer intertwined point is weaved, but this shuttle is in case determine, can not change in the weaving process, because this length (consumption) with the bending route of warp thread and then warp thread is relevant.About multi-ply fabrics 3 (A, F) two-layer, the warp thread amount that each layer (B-E) uses is all identical, can unify to control the warp run-in of these warp thread during production.Also it should be noted that, when the warp thread denting, should adopt rational denting order, otherwise, banking can make fabric.
It should also be noted that in weaving process in the moment of shed open full gate, the warp thread on the loom reaches maximum length, and combining at ordinary times, warp thread should retract to shortest length, but adopts modulus higher, during the less glass fibre of elasticity, yarn shrinks less, can cause opening unclear.The present invention adopts the tension force of controlling warp thread in the method for every warp thread rear suspension weight, makes that warp thread remains uniform tension force in the weaving process, and opening is clear.In addition, continuous glass fibre is the non-conductor of electricity, and warp thread 1 friction can produce static in weaving, and static is built up, and make and weave difficulty, so the workshop will keep certain relative humidity.
Fig. 4, Fig. 6 have provided the section structure schematic diagram of three layers and eight layers multi-ply fabrics 3 of the present invention respectively.Its weave can be identical with above-mentioned six layers of embodiment.No matter which floor, its technological parameter can design according to actual conditions, can also adopt carbon fiber, aramid fiber etc. as raw material; Use special number scope can be: 800-2500Tex; The weft yarn 2 that 4 places, intertwined point interweave can be 3-20 root etc.Porter, last machine all can be done rational adjustment through weft count etc.
For overcoming shortcomings such as prior art composite pore-forming is bad, the present invention proposes a kind of composite material forming method that is called support pore-forming process.Drawing and forming method with this method replacement prior art can make composite honeycomb hole pore-forming standard, uniformity, and outward appearance is beautiful, thereby has also improved the inherent quality of composite.For realizing this new method, specialized designs formation mould (referring to Fig. 7).It is characterized in that it comprise upper and lower tooth die 6,6 ', side plate 7, pore-forming steel column 8 and lateral opening steel column 9; The cross section of described pore-forming steel column 8 is regular hexagon or circle, and this shape should with shape 5 behind interlayer seam 5 pore-formings of described multi-ply fabrics 3 ' consistent; Upper and lower profile of tooth pressing mold 6,6 ' internal tooth form 10 and the cross sectional shape of the cross sectional shape of lateral opening steel column 9 and described pore-forming steel column 8 1/2 consistent, also be the shaping mould tool should with geometry (as thickness, width, pore-forming shape need etc.) standardization, the supporting design of seriation of technological parameter of multi-ply fabrics 3 (as the weft yarn radical that interweaves through the special number of weft yarn, interlayer, the machine of going up through weft count etc.) and composite commonly used, with the application that more gears to actual circumstances, realize purpose of the present invention.Composite geometry described here means as the composite of product sheet material not necessarily, can rely on the formation mould of supporting design to make other shape of actual needs.
The basic step of the support pore-forming process composite material forming method that the present invention proposes is (referring to Fig. 8):
1. described formation mould is coated with releasing agent;
2. after described pore-forming steel column 8 being inserted one by one in the interlayer seam 5 of described multi-ply fabrics 3, place lower toothed pressing mold 6 ' on;
3. described lateral opening steel column 9 is inserted one by one the layer side seam 5 of described multi-ply fabrics 3 and " after interior, bear against respectively in the both sides of multi-ply fabrics 3, make it and lower toothed pressing mold 6 ' flute profile integral body of formation with described side plate 7;
4. casting resin;
5. close behind the last profile of tooth pressing mold 6, pressurize;
6. under the room temperature, leave standstill 24 hours after, the demoulding;
7. the taking-up formation mould gets composite.
In described forming method, pressurization should be suitable, its objective is to extrude unnecessary resin, and promote the resin uniformly penetrating.The fabric construction internal characteristics of this external condition and multi-ply fabrics 3 of the present invention cooperation mutually can guarantee the uniformity consistency of composite quality of the present invention and outward appearance, thereby improves its inherent quality.
The even mixed liquor that the used resin of composite of the present invention can adopt unsaturated polyester resin, cyclohexanone peroxide curing agent, benzoic acid cobalt accelerator to make by a certain percentage.Be advisable with 24 hours hardening time, the too short and oversize desirable moulding that all is unfavorable for composite.
Claims (2)
1. a multi-ply fabrics (3), every layer of fabric is plain weave, it is characterized in that: face mutually in four warp thread (1) of locating two-layer fabrics intertwined point (4) every, there are two warp thread (1) not interweave with the weft yarn (2) of corresponding position, linear state is arranged, other two warp thread (1) then interweave with the two-layer weft yarn (2) of corresponding position, and the two-layer fabrics of this corresponding position is linked together, and then multiply cloth are interweaved be connected to become whole multi-ply fabrics (3); Facing mutually of linking together is not staggered to form interlayer seam (5) between the two-layer fabrics interweaving.
2. multi-ply fabrics according to claim 1 (3) is characterized in that described multi-ply fabrics (3) is the 3-8 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97112582 CN1042754C (en) | 1997-06-27 | 1997-06-27 | Multilayer woven-fabric and its composite material, forming mould and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97112582 CN1042754C (en) | 1997-06-27 | 1997-06-27 | Multilayer woven-fabric and its composite material, forming mould and method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98119895A Division CN1053613C (en) | 1998-09-28 | 1998-09-28 | Multi-ply fabrics composition materials and its formation mould and method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1170788A CN1170788A (en) | 1998-01-21 |
| CN1042754C true CN1042754C (en) | 1999-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97112582 Expired - Fee Related CN1042754C (en) | 1997-06-27 | 1997-06-27 | Multilayer woven-fabric and its composite material, forming mould and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876916B (en) * | 2005-06-10 | 2010-08-18 | 株式会社丰田自动织机 | Fiber fabric and composite material |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821467B (en) * | 2006-01-23 | 2010-09-29 | 南通大学 | Woven fabric with wet conduction, air ventilation, quick dry gradient structure |
| US8642151B2 (en) * | 2011-01-21 | 2014-02-04 | Albany Engineered Composites, Inc. | Preform and method for reinforcing woven fiber nodes |
| WO2013041254A1 (en) * | 2011-09-21 | 2013-03-28 | Nv Bekaert Sa | Non-steel distance keeper in impact beam |
| DE102015112896B3 (en) * | 2015-08-05 | 2016-11-03 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Multi-layer fabric and corresponding manufacturing process |
| CN106739009A (en) * | 2016-12-30 | 2017-05-31 | 宜兴市华恒高性能纤维织造有限公司 | A kind of cellular stereo fabric composite of global formation and preparation method thereof |
| CN111519307A (en) * | 2020-04-21 | 2020-08-11 | 南通纺织丝绸产业技术研究院 | Epoxy resin/UHMWPE hollow honeycomb composite board and manufacturing method thereof |
| CN112680864B (en) * | 2020-12-11 | 2022-05-10 | 江苏恒力化纤股份有限公司 | Fabric-enhanced rearview mirror and preparation method thereof |
| CN113502585B (en) * | 2021-07-12 | 2023-04-18 | 吴江万工机电设备有限公司 | Jacquard griffe made of three-dimensional multilayer profiling woven fabric, prefabricated body and making method |
-
1997
- 1997-06-27 CN CN 97112582 patent/CN1042754C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876916B (en) * | 2005-06-10 | 2010-08-18 | 株式会社丰田自动织机 | Fiber fabric and composite material |
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| Publication number | Publication date |
|---|---|
| CN1170788A (en) | 1998-01-21 |
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