CN102166840A - Z direction continuous carbon fiber prefabricated body - Google Patents
Z direction continuous carbon fiber prefabricated body Download PDFInfo
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- CN102166840A CN102166840A CN2011100297974A CN201110029797A CN102166840A CN 102166840 A CN102166840 A CN 102166840A CN 2011100297974 A CN2011100297974 A CN 2011100297974A CN 201110029797 A CN201110029797 A CN 201110029797A CN 102166840 A CN102166840 A CN 102166840A
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Abstract
The invention relates to an improvement on Z direction continuous carbon fiber prefabrication, which is characterized in that: a planar laminated carbon fiber fabric is weftless carbon fiber cloth formed by arranging long fibers in an interlaminar crossing way. A Z direction structure is stable, and basically undamaged continuous carbon fibers are arranged in the three-dimensional direction of the prefabricated body, so that the isotropy of the prefabricated body is enhanced, and a three-dimensional structural framework is formed. A chopped fiber web in which fibers are randomly distributed is introduced between adjacent layers, and a plurality of holes are distributed randomly, so that the introduction and uniform distribution of matrix carbon are facilitated. Due to the adoption of the weftless fabric, the needle threading resistance is reduced, the Z direction continuous fiber interval can be enlarged, and the Z direction continuous fiber introducing efficiency is improved; and large K-beam carbon fibers can be adopted, so that the cost can be lowered by 40-60 percent. The prefabricated body provided by the invention can be taken as a structural material, a functional material and a structural-functional material.
Description
Technical field
The present invention relates to a kind of Z to the charcoal fibre three-dimensional precast body that continuous charcoal fiber is arranged, especially to having the improvement of continuous charcoal fiber preform interlayer fabric now.
Background technology
Prepare various high-performance C/C composites, all need preparation charcoal fibre three-dimensional precast body earlier, charcoal fibre three-dimensional precast body (hereinafter to be referred as precast body) be meant X to, Y to, Z to desired results intensity is all arranged.Yet because smooth armful of carbon fiber surface and power are poor, only adopt X superimposed to charcoal fiber or woven fabric to, Y, its interlayer bonding strength is extremely low, so the more employing acupuncture of prior art technology, at superimposed precast body Z to introducing fiber reinforcement, thereby obtain to have the precast body that three-dimensional fiber connects, for example: it all is to adopt acupuncture to form precast body that U.S. Pat 5869411, Chinese patent 96121709,95191073, CN101575766, applicant formerly apply for a patent CN02138191.7 etc.This adopts acupuncture to introduce Z to fiber, to obtain the precast body of interlayer bonding strength, it still has deficiency: for example connect fiber at Z to introducing interlayer by the acupuncture mode, no doubt can strengthen precast body Z to structural strength, but objectively to cross thickness limited in one's ability because of needle-penetration, so that interlayer Z connects thickness to fiber is also limited; Secondly, Z is the staple fiber that produces through acupuncture to connecting fiber, and acupuncture course makes the X of former lay to sustaining damage to fiber with Y, and two reasons cause Z direction strength (interlayer tension, shearing resistance) always very not high, are difficult to make Z direction strength and the high composite of overall construction intensity.
In order to overcome acupuncture Z to the deficiency that strengthens, improve precast body interlayer adhesion, reduce layering, make Z more stable to structure, improve each same tropism, for example U.S. Pat 4218276 adopts carbon fiber sheets to make precast body at Z to connecting continuous fiber, the applicant also once adopted continuous charcoal fiber vertically pass mode at Z to forming continuous fiber, better reinforcement precast body Z to structural strength.Yet for making precast body that structural strength preferably be arranged, and the pore structure that is fit to distributes, and plane (X, Y to) mostly adopts little K bundle (1-6K) charcoal fibre fabric.Braid is many through broadwise fiber interweaving point, and for guaranteeing the smooth of interlayer woven cloth, usually need the pre-tension force of giving, form moment like this in the longitude and latitude crosspoint, and distance is shorter between woven cloth and thin each Moment Point of K bundle fiber, its tension force cause Z to when puncture resistance and friction big, (for example 〉=300mm) venipuncture difficulty is big, the puncture difficulty for big thickness goods, increasing puncture dynamics very easily causes the out-of-flatness of interlayer cloth again, and out-of-flatness can influence the plane performance of precast body equally; Secondly, introduce the puncture of continuous fiber thick steel needle and also can damage to fiber, objectively can cause X, Y to reduce to performance to X, Y; Besides, this continuous fiber adopts little spacing for example about 1.0-1.4 mm, and not only manufacture difficulty is bigger, and bigger to fibre damage to plane X, Y, and the easier flat fabric that makes produces fold, influences the plane mechanical property.In addition, little K bundle charcoal fiber is the cost height not only, and braiding overlap joint node is many, cause fiber overlapped points effect of the interface deposition easily, and it is inhomogeneous to cause follow-up carbon matrix to introduce easily, and the braided fiber overlap joint is little arch, and place, intertwined point fiber bending also can cause the plane performance to reduce.These all can cause the reduction of precast body mechanical property, or limit the raising of its performance.If adopt at Z and successively stack the charcoal fabric to arranging on the pre-manufactured steel needle plate, though the above-mentioned big deficiency of resistance of passing can be overcome, not only production efficiency obviously descends greatly, and actual industrialization is difficult for accepting, and other deficiencies are not overcome yet.Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of little to X, the fibre damage of Y direction, and the plane performance is not had influence substantially, and Z introduces easily to fiber, and the high Z of production efficiency is to continuous charcoal fiber preform is arranged.
The object of the invention realizes that main the improvement is that plane X, Y adopt no latitude cloth to replace little K bundle woven fabric (through weft fabric) to the charcoal fiber, thereby overcomes the deficiencies in the prior art, realizes the object of the invention.Specifically, Z of the present invention comprises the charcoal fabric of lay-up successively to continuous charcoal fiber preform is arranged, and vertically has continuous charcoal fiber to pass, and it is characterized in that the no latitude carbon fiber sheet that lay-up charcoal fabric is put for long fibre interlayer intersection.
Before the detailed description, make a presentation by the basic function and the effect that can reach earlier, so that those skilled in the art have one clearly to understand to this patent general plotting technical scheme invention.
Precast body interlayer charcoal fiber of the present invention adopts laid fabric cloth, and interlayer long fibre intersection, because of laid fabric only has only folk prescription to tension force, and does not have the fiber overlap joint, has reduced guiding puncture continuous fiber resistance; Secondly, it is directly and not crooked that fabric does not have the weft fiber crossed fiber, both helped the performance of fibre strength, it is also few to fibre damage not have the puncture of weft fiber draw point again simultaneously, can eliminate two-way fabric fully and prepare Z to the deficiency that the continuous fiber precast body is arranged, making X, Y, Z three-dimensional all has continuously and does not have substantially or damage less the precast body of fiber, can obtain the composite that three-dimensional intensity is all high, overall construction intensity is good, mechanical property is excellent.
In addition, be further to improve the interlayer associativity, improve the combination property of precast body, the net tire (claiming non-woven mat again) that can also make by short fiber at no latitude cloth interlayer lay.No latitude cloth interlayer lay net tire, net tire fiber random distribution, each the same tropism who has improved precast body, and net the form of the foetus formula has the porous of random distribution, not only for follow-up carbon deposit provides enough spaces, helps the more charcoals of deposition, improved C/ C complex carbon residue; And deposition C-structure distribution performance is good, helps improving the overall performance of making material.Look gained precursor structure intensity and performance requirement, the net tire can successively alternately be put with no latitude cloth, also can not have latitude cloth lay one deck net tire by several layers.
Among the present invention: no latitude cloth can adopt little K bundle charcoal fiber with prior art, but because no latitude cloth does not have and interweaves another to fiber, unidirectional fibre can obtain abundant expansion, has pore structure preferably equally, thereby can adopt the low relatively big K bundle fiber of price.No latitude carbon fiber sheet lamination lay, a kind of better is to adopt successively staggered or the rotation lay, is the best with the rotation lay especially wherein, more helps improving each same tropism.Z is to continuous fiber, and same prior art to desired thickness, is passed guiding continuous charcoal fiber by draw point in flat stack.
Z of the present invention is to continuous charcoal fiber preform is arranged, with respect to prior art, because interlayer adopts no latitude carbon fiber sheet or does not have the latitude carbon fiber sheet and the web of staple fibers tire replaces lay-up, not only having kept prior art adopts continuous fiber Z to passing, improve the interlayer cohesive force and be difficult for layering, Z is to constitutionally stable advantage, and makes gained precast body three-dimensional be undamaged substantially continuous charcoal fiber, improve each same tropism of precast body, thereby obtained good three-dimensional structure skeleton.No latitude carbon fiber sheet had both utilized unidirectional fibre intensity, and was simultaneously owing to there not being weft fiber substantially, to the damage of fiber, little to plane charcoal fibre damage when effectively minimizing introducing continuous fiber pin passes; Secondly, the plane is not to there being staggered overlap joint charcoal fiber, and it is little that pin passes resistance, and also having improved greatly threads a needle introduces the efficient of Z to continuous fiber; Besides, no latitude measuring fiber launches to obtain more evenly fine and closely woven pore structure.And do not have latitude cloth and do not have and interweave another to fiber, unidirectional fibre can obtain abundant expansion, can adopt the low many big K bundle fibers (〉=12 K) of price, and same volume precast body adopts big K bundle charcoal fiber, and cost can reduce 40-60%.Particularly interlayer is introduced the web of staple fibers tire of fiber random distribution, and the net mold has the random distribution porous, and introducing for follow-up carbon matrix provides more passage, helps carbon matrix and introduces and be evenly distributed.Adopt big K bundle fiber, Z is to having higher fiber volume fraction, thereby can strengthen Z to the continuous fiber spacing, and Z, connects Z to the fiber difficulty thereby reduced, and do not reduce performance apart from 1.5-5.0mm to continuous charcoal fibrillar center.Because the raising of precast body performance, precast body of the present invention both can be used as structural material, can be used as functional material again simultaneously, and structure and function have both material.Precast body of the present invention and C/ C composite have no latitude layer of cloth (the net plies can also be arranged) simultaneously, and Z is to the continuous whole fiber, for being different from prior art three-dimensional preformed body characteristics place.Precast body of the present invention can be differentiated the interlayer fabric by metallographic or ESEM method.
Below in conjunction with two exemplary embodiments; essence of the present invention is further understood in exemplary illustration and help; but the embodiment detail only is for the present invention is described; do not represent the present invention to conceive whole technical schemes down; therefore should not be construed as the total technical scheme of the present invention is limited; some are In the view of the technical staff; the unsubstantiality that does not depart from the present invention's design increases and/or change; for example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection domain of the present invention.
The specific embodiment
Embodiment 1: no latitude cloth lamination Z is to there being continuous charcoal fiber to pass precast body, precast body size 100 * 100 * 100mm
3, Z to fibrillar center apart from 2mm.
Adopt the fibrage of 12K charcoal not have latitude cloth, surface density 240g/m
2, cutting does not have latitude cloth 100 * 100mm, and (each limit of actual cutting size amplifies 10～20mm), and the no latitude cloth that cuts is successively ended lamination by long fibre direction rotation 60 degree lamination lay to desired thicknesses.Equidistant 2mm arranges vertical draw point matrix on 100 * 100mm platform, X is to respectively being 50 with Y to the draw point number, the draw point matrix is passed the stratified fiber body, replace draw point by root and connect the vertically continuous charcoal fiber of 12K, closely knit 22～24 layers/cm that makes that pressurizes forms Z to the no latitude cloth puncture fabric that continuous charcoal fiber is arranged.Performance indications are seen attached list.
Embodiment 2: as embodiment 1, wherein when lamination did not have latitude cloth, every interlayer had surface density 70g/m
2Short carbon fiber net tire.The closely knit number of plies of pressurizeing is 16～18 layers/cm.Performance indications are seen attached list.
Comparative example: with example 2, wherein flat fabric is the precast body that adopts 3K to have latitude cloth to make.Performance indications are seen attached list.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the equivalence of feature changes or modification; mutual various combination between feature, for example charcoal fiber K number changes, the variation of net tire lamination quantity; Z is to the change of continuous charcoal fibrillar center distance; or the like unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Claims (10)
1.Z to continuous charcoal fiber preform is arranged, comprise the charcoal fabric of lay-up successively, and vertically have continuous charcoal fiber to pass, it is characterized in that the no latitude carbon fiber sheet that lay-up charcoal fabric is put for long fibre interlayer intersection.
According to the described Z of claim 1 to continuous charcoal fiber preform is arranged, it is characterized in that not having latitude cloth interlayer and intersect for by machine direction interlayer rotation lay-up.
According to the described Z of claim 1 to continuous charcoal fiber preform is arranged, it is characterized in that Z to continuous charcoal fibrillar center apart from 1.5-5.0mm.
According to claim 1,2 or 3 described Z to continuous charcoal fiber preform is arranged, it is characterized in that not having latitude cloth interlayer has charcoal fleece tire.
According to claim 1,2 or 3 described Z to continuous charcoal fiber preform is arranged, it is characterized in that not having latitude cloth charcoal fiber is 〉=12 K charcoal fibers.
According to the described Z of claim 4 to continuous charcoal fiber preform is arranged, it is characterized in that not having latitude cloth charcoal fiber is 〉=12 K charcoal fibers.
According to claim 1,2 or 3 described Z to continuous charcoal fiber preform is arranged, it is characterized in that Z is 〉=12 K charcoal fibers to continuous charcoal fiber.
According to the described Z of claim 4 to continuous charcoal fiber preform is arranged, it is characterized in that Z is to continuous charcoal fibre bundle 〉=12 K charcoal fibers.
According to the described Z of claim 5 to continuous charcoal fiber preform is arranged, it is characterized in that Z is to continuous charcoal fibre bundle 〉=12 K charcoal fibers.
According to the described Z of claim 6 to continuous charcoal fiber preform is arranged, it is characterized in that Z is to continuous charcoal fibre bundle 〉=12 K charcoal fibers.
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| CN201110029797.4A CN102166840B (en) | 2011-01-27 | 2011-01-27 | Z direction continuous carbon fiber prefabricated body |
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| CN201110029797.4A CN102166840B (en) | 2011-01-27 | 2011-01-27 | Z direction continuous carbon fiber prefabricated body |
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| CN102166840A true CN102166840A (en) | 2011-08-31 |
| CN102166840B CN102166840B (en) | 2014-01-15 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572709A (en) * | 2012-07-31 | 2014-02-12 | 翁庆隆 | Method of using laminated composite material to repair transportation facilities and laminated composite material structure |
| WO2015018175A1 (en) * | 2013-08-06 | 2015-02-12 | 江苏天鸟高新技术股份有限公司 | Continuous carbon fiber reinforced crucible preform and preparation method therefor |
| CN104711775A (en) * | 2015-04-01 | 2015-06-17 | 赵晓明 | Continuous dispersible filament fiber needled felt and preparation method thereof |
| CN108284619A (en) * | 2018-02-11 | 2018-07-17 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of interlayer toughened composite material, preparation method and application |
| CN108374163A (en) * | 2016-12-22 | 2018-08-07 | 中国航空制造技术研究院 | A kind of preparation method of microarray structure |
| CN110485047A (en) * | 2019-09-18 | 2019-11-22 | 江苏恒神股份有限公司 | A kind of aeroplane brake discs quasi- three-dimensional preform and preparation method thereof |
| CN111960841A (en) * | 2020-08-31 | 2020-11-20 | 陕西美兰德炭素有限责任公司 | Preparation method of crucible tray of single crystal furnace |
| CN114853495A (en) * | 2022-04-21 | 2022-08-05 | 西安超码科技有限公司 | Preparation method of carbon/carbon hot pressing mold for high-pressure hot pressing sintering furnace |
| CN115609997A (en) * | 2022-11-14 | 2023-01-17 | 广东韩研活性炭科技股份有限公司 | Modified honeycomb carbon forming method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103572709A (en) * | 2012-07-31 | 2014-02-12 | 翁庆隆 | Method of using laminated composite material to repair transportation facilities and laminated composite material structure |
| WO2015018175A1 (en) * | 2013-08-06 | 2015-02-12 | 江苏天鸟高新技术股份有限公司 | Continuous carbon fiber reinforced crucible preform and preparation method therefor |
| CN104711775A (en) * | 2015-04-01 | 2015-06-17 | 赵晓明 | Continuous dispersible filament fiber needled felt and preparation method thereof |
| CN108374163A (en) * | 2016-12-22 | 2018-08-07 | 中国航空制造技术研究院 | A kind of preparation method of microarray structure |
| CN108284619A (en) * | 2018-02-11 | 2018-07-17 | 中国科学院苏州纳米技术与纳米仿生研究所 | A kind of interlayer toughened composite material, preparation method and application |
| CN110485047A (en) * | 2019-09-18 | 2019-11-22 | 江苏恒神股份有限公司 | A kind of aeroplane brake discs quasi- three-dimensional preform and preparation method thereof |
| CN110485047B (en) * | 2019-09-18 | 2024-04-05 | 江苏恒神股份有限公司 | Quasi-three-dimensional preform for aircraft brake disc and preparation method thereof |
| CN111960841A (en) * | 2020-08-31 | 2020-11-20 | 陕西美兰德炭素有限责任公司 | Preparation method of crucible tray of single crystal furnace |
| CN114853495A (en) * | 2022-04-21 | 2022-08-05 | 西安超码科技有限公司 | Preparation method of carbon/carbon hot pressing mold for high-pressure hot pressing sintering furnace |
| CN115609997A (en) * | 2022-11-14 | 2023-01-17 | 广东韩研活性炭科技股份有限公司 | Modified honeycomb carbon forming method |
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