CN103361811A - Negative poisson ratio yarn structure and manufacturing method thereof - Google Patents
Negative poisson ratio yarn structure and manufacturing method thereof Download PDFInfo
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- CN103361811A CN103361811A CN2012102128443A CN201210212844A CN103361811A CN 103361811 A CN103361811 A CN 103361811A CN 2012102128443 A CN2012102128443 A CN 2012102128443A CN 201210212844 A CN201210212844 A CN 201210212844A CN 103361811 A CN103361811 A CN 103361811A
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Abstract
The invention belongs to the technical field of weaving, and discloses a negative poisson ratio yarn structure and a manufacturing method thereof. The negative poisson ratio yarn structure is twisted by first yarns and second yarns, wherein the tensile modulus of each first yarn is greater than that of each second yarn. The manufacturing method of the structure comprises the following steps of: 1) yarn feeding: feeding the first yarns and the second yarns which are arrayed at intervals into a yarn forming area simultaneously, and 2) yarn twisting: twisting the fed first yarns and the second yarns simultaneously by rotating a slotted hole rotating disc, and then allowing the first yarns and the second yarns to be converged into the negative poisson ratio yarn structure at an inlet of a twisting aggregation device. The negative poisson ratio yarn structure is twisted by the two groups of yarns with different moduli, and is stable, and uniform in twist distribution, the yarns on the surface layer is free from slippage, and the surfaces of the yarns are level when tensioned. The manufacturing method is simple to operate, convenient to implement and low in used equipment cost, can be used for continuous production, and is convenient to popularize and implement.
Description
Technical field
The invention belongs to textile technology field, and relate to a kind of yarn texture and manufacture method thereof.More specifically, the present invention relates to a kind of novel negative poisson ' s ratio yarn texture and manufacture method thereof.
Background technology
Common being seen solid material is positive Poisson ratio material in the daily life, and when this class material upwards was subject to stretching (or compression) in one party, it can produce contractions (or expansion) perpendicular to force direction and be out of shape.Negative poisson's ratio material is then on the contrary, and when they upwards were subject to stretching (or compression) in one party, it can produce expansions (or contraction) perpendicular to force direction and be out of shape.Therefore, the negative poisson's ratio material auxetic materials that is otherwise known as, the unusual mechanical property that it shows has not only caused showing great attention to of material science and mechanics field researcher, and can develop many special purposes, such as sensor, explosion-proof, anticollision, sound insulation, filtration and intelligent bandage etc.
In recent years, utilizing textile technology to make various negative poisson's ratio materials is subject to people and more and more pays close attention to.As a kind of weaving negative poisson's ratio material, the development of negative poisson ' s ratio yarn and application are subject to people's attention equally.Patent WO 2007/125352A1 has described a kind of negative poisson ' s ratio yarn texture.This yarn texture is by the elasticity heart yarn of easy elongation strain and be wrapped in heart yarn rigid yarn outside and that be difficult for elongation strain in the screw type mode and form.When being subject to stretching, the outside yarn that twines is straightened, so that heart yarn is crooked, causes the increase of yarn diameter and produces Negative poisson's ratio.But the outside easy slippage of yarn of twining of this yarn texture causes the unstable and twist irregularity of yarn texture.Therefore in addition, the negative poisson ' s ratio effect of this yarn texture is less, and yam surface is uneven during stretching, has limited it in the application in clothes and other field.
Patent WO 2010/146347A1 has described another kind of negative poisson ' s ratio yarn texture.This yarn texture forms by a larger yarn helix of modulus being embedded into a less material internal of modulus.Do the time spent when being subject to elongation strain, inner screw type yarn is straightened, thereby the change that causes the outer wrap material shape realizes Negative poisson's ratio.Although there is not the problem of outer wrap material slippage in this yarn texture, owing to the constraint of outer wrap material self to the spiral yarn, the negative poisson ' s ratio DeGrain, yam surface is uneven equally during stretching.
Patent US 2011/0039088A1 has described a kind of negative poisson ' s ratio yarn texture similar with patent WO 2007/125352A1, but the outside yarn that twines changes the long filament to humidity sensitive into.When humidity changed, the long filament of outer moisture sensitivity produce to shrink, and caused heart yarn crooked, caused the increase of yarn diameter and produced Negative poisson's ratio.This yarn can be used for making the comfortableness clothes; When humidity increased, the gas permeability of fabric was owing to the change of negative poisson ' s ratio yarn shape increases, thus the comfortableness of enhancing clothes.But there is the easy slippage of outside yarn equally in this yarn texture, the problem such as the uneven and Negative poisson's ratio of yam surface is little during stretching.
Can find out that from above related application the negative poisson ' s ratio yarn texture exists all that Negative poisson's ratio is little, yarn texture is unstable and twist irregularity and the rough shortcoming of yam surface when stretching in the prior art, has limited the extensive use of negative poisson ' s ratio yarn.
Summary of the invention
The technical problem to be solved in the present invention is, Negative poisson's ratio for negative poisson ' s ratio yarn texture in the prior art is little, yarn texture is unstable and twist irregularity and the defective such as yam surface is uneven when stretching, and provides that a kind of Negative poisson's ratio is remarkable, yarn texture stable and the twist smooth negative poisson ' s ratio yarn texture and manufacture method thereof of yam surface evenly and when stretching.
The technical problem to be solved in the present invention is achieved by the following technical programs: a kind of negative poisson ' s ratio yarn texture is provided, wherein, described yarn texture is formed by the first yarn and the second Yarn twisting, the stretch modulus of described the first yarn is greater than the stretch modulus of described the second yarn, and described the first yarn and described the second yarn are alternately.
In above-mentioned negative poisson ' s ratio yarn texture, described the first yarn is positioned at the described yarn texture outside and space, and described the second yarn is positioned at described yarn texture inboard and is in contact with one another.
In above-mentioned negative poisson ' s ratio yarn texture, described the first yarn is identical with the radical of described the second yarn.
In above-mentioned negative poisson ' s ratio yarn texture, the radical of described the first yarn and described the second yarn is respectively 2 at least.
In above-mentioned negative poisson ' s ratio yarn texture, the diameter of described the first yarn is less than the diameter of described the second yarn.
In above-mentioned negative poisson ' s ratio yarn texture, the combination of described the first yarn and described the second yarn is terylene thread/rubber band yarn, terylene thread/lastex, sewing thread/spandex core-spun yarn, carbon fibers/fiberglass, fishing line/lastex or nylon yarn/rubber band yarn.
According to a further aspect in the invention, provide a kind of manufacture method of negative poisson ' s ratio yarn texture, said method comprising the steps of:
S1, yarn feeding step: the first yarn and the second yarn are fed into yarn simultaneously form the zone;
S2, Yarn twisting step: by rotating the slotted eye rotating disk described the first yarn and second yarn of feeding are twisted simultaneously, described the first yarn and the second yarn pool described negative poisson ' s ratio yarn texture subsequently in the porch of twisting aggregation device.
In the manufacture method of above-mentioned negative poisson ' s ratio yarn texture, described method is further comprising the steps of:
S3, yarn tractive and batch step: the negative poisson ' s ratio yarn texture tractive that twisting among the described step S2 is shaped by roller device and described twisting aggregation device goes out described yarn and forms the zone, and is wound up on the coiler device.
In the manufacture method of above-mentioned negative poisson ' s ratio yarn texture, in described step S1, locate described the first yarn and second yarn of feeding by the hole of described slotted eye rotating disk; Wherein the tension force of the first yarn and the second yarn can be regulated separately.
In the manufacture method of above-mentioned negative poisson ' s ratio yarn texture, the twist of the described negative poisson ' s ratio yarn of rotational speed regulation by changing yarn draw rate and/or described slotted eye rotating disk.Simultaneously, the center that can regulate the slotted eye rotating disk is to the distance at twisting aggregation device portal place and to the distance of the punch position of the first yarn and the second yarn.
Implement negative poisson ' s ratio yarn texture of the present invention and can obtain following beneficial effect: (1) this negative poisson ' s ratio yarn texture adopts the yarn of two groups of different modulus to twist together and finishes, yarn texture has preferably stability, the shortcoming such as overcome in the prior art yarn slippage of negative poisson ' s ratio yarn texture top layer, structural instability and twist skewness and yam surface is uneven when stretching; (2) the raw material range of choice of this negative poisson ' s ratio yarn texture is wide, as long as two groups of different yarns of modulus may be used to make this yarn texture: (3) this negative poisson ' s ratio yarn texture has larger negative poisson ' s ratio, can be used for the fabric of different negative poisson ' s ratios and the making of structure, have preferably application prospect in fields such as functional clothing, composite enhancing, communications and transportation, health care, Aero-Space.
The manufacture method of implementing negative poisson ' s ratio yarn texture of the present invention can obtain following beneficial effect: this manufacture method is simple to operate, enforcement is convenient and the device therefor cost is low, can be continuously produced, and is convenient to promotion and implementation.
Description of drawings
Below with reference to the drawings and specific embodiments the present invention is described in further details.In the accompanying drawing:
Fig. 1 is the structural representation before negative poisson ' s ratio yarn texture of the present invention is subject to axial tension;
Fig. 2 is the structural representation of negative poisson ' s ratio yarn texture of the present invention when being subject to axial tension;
Fig. 3 a is the schematic cross-section of negative poisson ' s ratio yarn texture of the present invention before being subject to axial tension;
Fig. 3 b is the schematic cross-section of negative poisson ' s ratio yarn texture of the present invention in being subject to the axial tension process;
Fig. 3 c is the schematic cross-section of negative poisson ' s ratio yarn texture of the present invention when diameter reaches maximum in being subject to the axial tension process;
Fig. 4 a is the schematic diagram according to the manufacture method of negative poisson ' s ratio yarn texture of the present invention;
Fig. 4 b be according to of the present invention in the manufacture process of negative poisson ' s ratio yarn texture the first yarn and the second yarn at the layout of slotted eye rotating disk;
Fig. 4 c is the flow chart according to the manufacture method of negative poisson ' s ratio yarn texture of the present invention;
Fig. 5 is according to the axial tension F (N) of the negative poisson ' s ratio yarn texture of the embodiment of the invention 1 and the curve map of axial strain ε x relation; Wherein, the first yarn is nylon yarn, and the second yarn is the rubber band yarn;
Fig. 6 is the curve map according to the Poisson's ratio V of the negative poisson ' s ratio yarn texture of the embodiment of the invention 1 and axial strain ε x relation; Wherein, the first yarn is nylon yarn, and the second yarn is the rubber band yarn;
Fig. 7 is according to the axial tension F (N) of the negative poisson ' s ratio yarn texture of the embodiment of the invention 2 and the curve map of axial strain ε x relation; Wherein, the first yarn is fishing line, and the second yarn is lastex;
Fig. 8 is the curve map according to the Poisson's ratio V of the negative poisson ' s ratio yarn texture of the embodiment of the invention 2 and axial strain ε x relation; Wherein, the first yarn is fishing line, and the second yarn is lastex.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with the drawings and specific embodiments the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the invention provides a kind of novel negative poisson ' s ratio yarn texture, this yarn texture is formed by the first yarn 1 and 2 twisting of the second yarn alternately, wherein, the stretch modulus of the first yarn 1 is greater than the stretch modulus of the second yarn 2, and the diameter of the first yarn 1 is less than the diameter of the second yarn 2.Figure 1 shows that the negative poisson ' s ratio yarn texture under the pulled out condition not, as can be seen from Figure, the second yarn 2 is positioned at the inboard and mutual close contact of yarn texture, and the first yarn 1 is positioned at the yarn texture outside and does not contact each other.This negative poisson ' s ratio yarn texture is when being subject to axial tension or compression, and its direction perpendicular to axial direction can corresponding expansion or contraction.Further, because yarn texture forms through twisting, Stability Analysis of Structures is evenly distributed without top layer yarn slippage defect and the twist, and yam surface keeps smooth in stretching or compression process, therefore is applicable to well weaving and clothes and makes the field.
In addition, the present invention adopts the first and second equal yarns of radical to make described negative poisson's ratio material.The radical of used the first and second yarns is at least 2.As illustrated in fig. 1 and 2, the diagram yarn texture is then formed by 3 the first yarns and the second Yarn twisting respectively.
With reference to Fig. 1 and 2, H
0And H
1Be respectively negative poisson ' s ratio yarn texture of the present invention and be not subject to the height of axial tension and the side projection when being subject to axial tension.According to above-mentioned property description to yarn texture of the present invention as can be known, H
1Should be greater than H
0And also prove H through the actual tests test
1Greater than H
0, fully verified the remarkable Negative poisson's ratio that yarn texture of the present invention has.Describe the structural change of negative poisson's ratio material of the present invention when being subject to axial tension in detail below in conjunction with Fig. 3 a-3c.
Fig. 3 a is respectively that negative poisson ' s ratio yarn texture of the present invention is before stretching, in the drawing process and the schematic cross-section of the diameter of yarn texture when reaching maximum to 3c.Wherein R represents the radius of the second yarn, and r represents the radius of the first yarn, and R is greater than r.(Fig. 3 a), the second yarn is positioned at the inboard and mutual close contact of yarn texture before stretching; The first yarn is positioned at the outside line of structure yarn and is spaced from each other.When yarn is subject to axial tension (Fig. 3 b), because the stretch modulus of two groups of yarns is different, therefore the first yarn produces the trend that moves to the center of yarn texture because the stretch modulus larger axis elongates to difficult, and spiral is easier to be stretching; And the second yarn axially easily elongates owing to stretch modulus is less, and its position is extruded by the first yarn easily, thereby the inside and outside relative transfer phenomena of yarn of two groups of different modulus occurs, and the diameter of obviously visible yarn texture increases gradually in this process.When the first yarn arrives the inside of yarn texture fully (Fig. 3 c), it is maximum that the diameter of yarn texture reaches.
Fig. 4 a and 4b are respectively schematic diagram and the flow charts of the manufacture method of root negative poisson ' s ratio yarn texture of the present invention.Referring to Fig. 4 a and 4b, the manufacture method of negative poisson ' s ratio yarn texture comprises following three steps:
1, yarn feeding step: by thread tension device the first yarn 1 and the second yarn 2 are fed into yarn from yarn cylinder 3 simultaneously and form the zone, hole by slotted eye rotating disk 4 in the feeding process is accurately located the first yarn 1 and the second yarn 2, and the first yarn 1 and second yarn 2 of feeding should be alternately.It should be noted, can regulate separately the tension force of feeding yarn.
2, Yarn twisting step: twist simultaneously by the first yarn 1 and the second yarn 2 that rotate 4 pairs of feedings of slotted eye rotating disk, it pools the negative poisson ' s ratio yarn texture at the porch of twisting aggregation device 5 O subsequently; The twist of the negative poisson ' s ratio yarn texture that wherein, can finally form by the rotational speed regulation of regulating slotted eye rotating disk 4.
3, yarn tractive and batch step: by roller device 6 and twisting aggregation device 5 the negative poisson ' s ratio yarn texture tractive yarn line that twisting in the step 2 is shaped is formed the zone, and be wound up on the coiler device 7; Wherein, can regulate by regulating the yarn draw rate twist of the final negative poisson ' s ratio yarn texture that forms.
Can make by above-mentioned steps and to have the obvious negative poisson ' s ratio yarn texture of certain twist, Stability Analysis of Structures and Negative poisson's ratio.In addition, can make according to the actual conditions adjustment configuration of each device that adopts in the above-mentioned yarn texture process.For example, the center of adjustable slot hole rotating disk 4 is to the distance of twisting aggregation device 5 porch O and to the distance of the punch position of the first yarn 1 and the second yarn 2.
Below further specify the manufacture process of negative poisson ' s ratio yarn texture of the present invention by specific embodiment.
Embodiment 1:
Select respectively the larger nylon yarn of the less rubber band yarn of stretch modulus and stretch modulus as the second yarn and the first yarn, wherein, the diameter of rubber band yarn is 0.5mm, and the diameter of nylon yarn is 0.4mm.By thread tension device 2 rubber band yarns and nylon yarn are fed into yarn from yarn cylinder 3 simultaneously and form the zone, the hole by slotted eye rotating disk 4 in the feeding process is accurately located rubber band yarn and nylon yarn, and makes both alternately; Twist simultaneously by the rubber band yarn and the nylon yarn that rotate 4 pairs of feedings of slotted eye rotating disk, it pools the negative poisson ' s ratio yarn texture at the porch of twisting aggregation device 5 O subsequently; To twist the negative poisson ' s ratio yarn texture tractive yarn line that is shaped by roller device 6 and twisting aggregation device 5 and form the zone, and be wound up on the coiler device 7.Regulate the twist of the negative poisson ' s ratio yarn texture that finally makes among this embodiment by regulating the yarn draw rate, the number of twists that draws after tested negative poisson ' s ratio yarn among the embodiment 1 is 140 sth. made by twisting/rice.
Fig. 5 and Fig. 6 are respectively the curve maps that axial tension F (N) and axial strain ε x, Poisson's ratio V and the axial strain ε x of the negative poisson ' s ratio yarn texture of the embodiment of the invention 1 concerns.The tension test of above-mentioned yarn samples is finished at tester Instron5566, disposes in addition a computer and a camera, in time records image and the stretcher strain data that yarn diameter changes in the test process by program software control camera.As can be seen from Figure, under certain axial tension effect, the Poisson's ratio V of negative poisson ' s ratio yarn texture increases along with the increase of axial strain among the embodiment 1, embodies stronger Negative poisson's ratio.In addition, by the variation of yarn texture configuration of surface in the camera real-time monitored drawing process, without the phenomenon existence of outer yarn slippage or yarn texture surface irregularity.The yarn texture moisture absorption that makes among the embodiment 1 is ventilative, well-pressed smooth, and has unique negative poisson ' s ratio effect, has wide application space at aspects such as motion protection.
Embodiment 2:
Select respectively the larger fishing line of the less lastex of stretch modulus and stretch modulus as the second yarn and the first yarn, wherein, the diameter of lastex is 0.7mm, and the diameter of fishing line is 0.5mm.By thread tension device 3 lastexes and fishing line are fed into yarn from yarn cylinder 3 simultaneously and form the zone, the hole by slotted eye rotating disk 4 in the feeding process is accurately located lastex and fishing line, and makes both alternately; Twist simultaneously by the lastex and the fishing line that rotate 4 pairs of feedings of slotted eye rotating disk, it pools the negative poisson ' s ratio yarn texture at the porch of twisting aggregation device 5 O subsequently; To twist the negative poisson ' s ratio yarn texture tractive yarn line that is shaped by roller device 6 and twisting aggregation device 5 and form the zone, and be wound up on the coiler device 7.The twist of the negative poisson ' s ratio yarn texture that finally forms by the rotational speed regulation of regulating slotted eye rotating disk 4 among this embodiment, the number of twists that draws after tested negative poisson ' s ratio yarn among the embodiment 2 are 140 sth. made by twisting/rice.
Fig. 7 and Fig. 8 are respectively the curve maps that axial tension F (N) and axial strain ε x, Poisson's ratio V and the axial strain ε x of the negative poisson ' s ratio yarn texture of the embodiment of the invention 2 concerns.The tension test of above-mentioned yarn samples is finished at tester Instron5566, disposes in addition a computer and a camera, in time records image and the stretcher strain data that yarn diameter changes in the test process by program software control camera.As can be seen from Figure, under certain axial tension effect, the Poisson's ratio V of negative poisson ' s ratio yarn texture increases along with the increase of axial strain among the embodiment 2, embodies stronger Negative poisson's ratio.In addition, by the variation of yarn texture configuration of surface in the camera real-time monitored drawing process, without the phenomenon existence of outer yarn slippage or yarn texture surface irregularity.The yarn texture that makes among the embodiment 2 has Stability Analysis of Structures, wear-resisting and advantage that intensity is large, is fit to do rope, enhanced type composite material etc.
Embodiment 3:
Select respectively the larger carbon fiber of the less glass fibre of stretch modulus and stretch modulus as the second yarn and the first yarn, wherein, the diameter of glass fibre is 0.2mm, and the diameter of carbon fiber is 0.1mm; All the other operating procedures are identical with embodiment 1, at this repeated description no longer.The number of twists that draws after tested prepared negative poisson ' s ratio yarn among the embodiment 3 is 50 sth. made by twisting/rice.
Embodiment 4:
Select respectively the larger sewing thread of the less spandex core-spun yarn of stretch modulus and stretch modulus as the second yarn and the first yarn, wherein, the diameter of spandex core-spun yarn is 0.6mm, and the diameter of terylene thread is 0.4mm; All the other operating procedures are identical with embodiment 2, at this repeated description no longer.The number of twists that draws after tested prepared negative poisson ' s ratio yarn among the embodiment 4 is 140 sth. made by twisting/rice.
Embodiment 5:
Select respectively the larger terylene thread of the less lastex of stretch modulus and stretch modulus as the second yarn and the first yarn, wherein the diameter of lastex is 0.6mm, the diameter of terylene thread is 0.4mm, and all the other operating procedures are identical with embodiment 2, at this repeated description no longer.The number of twists that draws after tested prepared negative poisson ' s ratio yarn among the embodiment 5 is 145 sth. made by twisting/rice.
Except above five kinds of examples, preparation meets the negative poisson ' s ratio yarn texture that the present invention requires as raw material also can to select other suitable yarns, simultaneously, being used in combination of the various yarns that the present invention lists also is not limited to combinations thereof, as long as the stretch modulus of used the first yarn is greater than the stretch modulus of the second yarn, and the diameter of the first yarn gets final product less than the stretching diameter of the second yarn.For example, the yarn (the first yarn) that the employed stretch modulus of negative poisson ' s ratio yarn texture of the present invention is larger can expand to short fibre yarn, chemical-fibres filaments, natural fabric and chemical mixed yarn etc.; The yarn that stretch modulus is less (the second yarn) can expand to cotton synthetic fibre cladded yarn etc.Select the increase of kind scope along with composite yarn, negative poisson ' s ratio yarn texture kind of the present invention also can show diversity, will have good application prospect in fields such as functional clothing, home textile product, health care, communications and transportation, composite enhancing, Aero-Space.
By above-described embodiment as can be known, adopt manufacture method of the present invention can make the significant yarn texture of Negative poisson's ratio, it not only has good stability, and has overcome in the prior art yarn slippage of negative poisson ' s ratio yarn texture top layer and twist skewness and the rough problem of yam surface when stretching.The raw material range of choice of negative poisson ' s ratio yarn texture of the present invention is wide, as long as two groups of different yarns of modulus may be used to make this yarn texture: its manufacture method is simple to operate, enforcement is convenient and the device therefor cost is low, can be continuously produced, be convenient to promotion and implementation.
The above only is the preferred embodiments of the present invention, not in order to limiting the present invention, all any modifications of doing in the spirit and principles in the present invention, is equal to and replaces or improvement etc., all should be included in protection scope of the present invention.
Claims (10)
1. negative poisson ' s ratio yarn texture, it is characterized in that, described yarn texture is formed by the first yarn (1) and the second yarn (2) twisting, the stretch modulus of described the first yarn (1) is greater than the stretch modulus of described the second yarn (2), and described the first yarn (1) and described the second yarn (2) are alternately.
2. negative poisson ' s ratio yarn texture according to claim 1 is characterized in that, described the first yarn (1) is positioned at the described yarn texture outside and space, and described the second yarn (2) is positioned at described yarn texture inboard and is in contact with one another.
3. negative poisson ' s ratio yarn texture according to claim 1 and 2 is characterized in that, described the first yarn (1) is identical with the radical of described the second yarn (2).
4. negative poisson ' s ratio yarn texture according to claim 3 is characterized in that, the radical of described the first yarn (1) and described the second yarn (2) is respectively 2 at least.
5. negative poisson ' s ratio yarn texture according to claim 1 and 2 is characterized in that, the diameter of described the first yarn (1) is less than the diameter of described the second yarn (2).
6. negative poisson ' s ratio yarn texture according to claim 1 and 2, it is characterized in that the combination of described the first yarn (1) and described the second yarn (2) is terylene thread/rubber band yarn, terylene thread/lastex, sewing thread/spandex core-spun yarn, carbon fibers/fiberglass, fishing line/lastex or nylon yarn/rubber band yarn.
7. the manufacture method of a negative poisson ' s ratio yarn texture is characterized in that, said method comprising the steps of:
S1, yarn feeding step: the first yarn (1) that will be alternately and the second yarn (2) are fed into simultaneously yarn and form the zone;
S2, Yarn twisting step: by rotating slotted eye rotating disk (4) described the first yarn (1) and second yarn (2) of feeding are twisted simultaneously, described the first yarn (1) and the second yarn (2) pool described negative poisson ' s ratio yarn texture in the porch of twisting aggregation device (5) subsequently.
8. the manufacture method of negative poisson ' s ratio yarn texture according to claim 7 is characterized in that, described method is further comprising the steps of:
S3, yarn tractive and batch step: the negative poisson ' s ratio yarn texture tractive that twisting among the described step S2 is shaped by roller device (6) and described twisting aggregation device (5) goes out described yarn and forms the zone, and is wound up on the coiler device (7).
9. according to claim 7 or the manufacture method of 8 described negative poisson ' s ratio yarn textures, it is characterized in that, in described step S1, described the first yarn (1) and second yarn (2) of location, the hole feeding by described slotted eye rotating disk (4).
10. the manufacture method of negative poisson ' s ratio yarn texture according to claim 8 is characterized in that, the twist of the described negative poisson ' s ratio yarn of rotational speed regulation by changing yarn draw rate and/or described slotted eye rotating disk (4).
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| CN1175290A (en) * | 1994-12-12 | 1998-03-04 | C·W·普罗克特 | Composite yarn and process for producing same |
| CN1768176A (en) * | 2003-03-29 | 2006-05-03 | 道科宁有限公司 | Improvements in and relating to composite materials and structures |
| US20070210011A1 (en) * | 2004-08-23 | 2007-09-13 | Auxelix Limited | Uses of auxetic fibres |
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