CN112195524A - Spinning device and spinning method for nanofibers - Google Patents
Spinning device and spinning method for nanofibers Download PDFInfo
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- CN112195524A CN112195524A CN202011047428.3A CN202011047428A CN112195524A CN 112195524 A CN112195524 A CN 112195524A CN 202011047428 A CN202011047428 A CN 202011047428A CN 112195524 A CN112195524 A CN 112195524A
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- 238000009987 spinning Methods 0.000 title claims abstract description 63
- 239000002121 nanofiber Substances 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 181
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 181
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 181
- 239000000835 fiber Substances 0.000 claims abstract description 163
- 230000007246 mechanism Effects 0.000 claims abstract description 77
- 238000005491 wire drawing Methods 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000002238 carbon nanotube film Substances 0.000 claims description 23
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000012681 fiber drawing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000004804 winding Methods 0.000 abstract description 6
- 238000003491 array Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000002166 wet spinning Methods 0.000 description 3
- 238000005411 Van der Waals force Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010036 direct spinning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920006253 high performance fiber Polymers 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D11/00—Other features of manufacture
- D01D11/04—Fixed guides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D7/00—Collecting the newly-spun products
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
本发明涉及一种纳米纤维的纺丝装置及纺丝方法，纳米纤维的纺丝装置用于碳纳米管纤维的拉丝与并丝工艺，包括固定机构，固定机构上包括多个纱盘，纱盘用于放置生长有碳纳米管阵列的基底；拉丝机构，拉丝机构连接固定机构，拉丝机构用于从生长有碳纳米管阵列的基底中加工形成碳纳米管纤维；导丝机构，导丝机构包括多级导丝组件，多级导丝组件设置在固定机构上并相对纱盘由近至远依次设置，碳纳米管纤维依次通过导丝组件并逐级汇聚，直至多根碳纳米管纤维合并成一束。本申请所提供的纺丝装置，省去了先单根纤维卷绕再退绕‑并丝工序，将若干个阵列纺丝的单根纤维直接合并成一束之后，再卷绕在筒子上，减少了纤维损耗，并且节约了生产时间与成本。
The invention relates to a nanofiber spinning device and a spinning method. The nanofiber spinning device is used for the drawing and doubling process of carbon nanotube fibers. For placing the substrate on which the carbon nanotube array is grown; the wire drawing mechanism, the wire drawing mechanism is connected to the fixing mechanism, and the wire drawing mechanism is used to process and form the carbon nanotube fiber from the substrate on which the carbon nanotube array is grown; the wire guide mechanism, the wire guide mechanism includes Multi-stage guide wire assembly, the multi-stage guide wire assembly is arranged on the fixing mechanism and is arranged in order from near to far relative to the yarn tray, and the carbon nanotube fibers pass through the guide wire assembly in turn and converge step by step until multiple carbon nanotube fibers merge into one. bundle. The spinning device provided in this application eliminates the need for the process of firstly winding and then unwinding a single fiber, and merging several array-spun single fibers into a bundle, and then winding them on a bobbin, reducing the need for Fiber losses are eliminated, and production time and costs are saved.
Description
Technical Field
The present invention relates to a nanofiber spinning apparatus, and more particularly, to a nanofiber spinning apparatus and a nanofiber spinning method in which drawing, and doubling of carbon nanotubes are integrated.
Background
Carbon nanotube fibers are a new generation of high performance fibers formed by the axial alignment of numerous carbon nanotubes, with the tubes being connected by van der waals forces. The carbon nanotube fiber has the advantages of light weight, high strength, high and low temperature resistance, corrosion resistance, long service life, difficult deformation at high temperature, quick heat dissipation, random bending, strong formability, small occupied space and wide application in the fields of bulletproof materials, composite materials, heating fabrics and the like.
Currently, single carbon nanotube fibers are thin and have a diameter of 10-100 μm, and in actual production and product design (such as unidirectional tape production, weaving, and mixed weaving with other high-performance fiber bundles), fiber bundles formed by combining a plurality of single carbon nanotube fibers are usually required. The carbon nanotube fiber spinning is mainly divided into three methods, wet spinning, direct spinning and array spinning. The wet spinning is to adopt carbon nanotube dispersion as spinning solution, and then to solidify and form through a coagulating bath, which is similar to the traditional polymer wet spinning; the direct spinning is that the carbon nano tube lattice produced by the high-temperature reaction furnace is directly formed into carbon nano tube fiber through solution densification and the like; the array spinning is that the carbon nanotube array is grown on the substrate in the high temperature furnace, then the substrate is taken out, the film is pulled out from the array and then the film is processed into the silk, the carbon nanotube in the fiber prepared by the array method has better orientation and higher purity of the carbon nanotube, and the fiber has the best mechanical property in the three methods.
The three methods, the technologies disclosed at present, can only produce and wind single fibers, if the weaving process is required, the unwinding-doubling process is required, i.e. a plurality of single fiber yarn bobbins are simultaneously unwound and combined into a bundle and then wound, and the unwinding process needs to contact with some machine parts, so that the fibers are abraded, and the doubling process is time-consuming.
Disclosure of Invention
Therefore, it is necessary to provide a nanofiber spinning device for solving the problems that array spinning can only produce a single carbon nanotube fiber, and the doubling process is complex and the carbon nanotube fiber is easy to damage.
A nanofiber spinning device is used for a carbon nanotube fiber drawing and doubling process and comprises a fixing mechanism, wherein the fixing mechanism comprises a plurality of yarn discs, and the yarn discs are used for placing a substrate on which a carbon nanotube array grows; the wire drawing mechanism is connected with the fixing mechanism and is used for processing the substrate on which the carbon nanotube array grows to form the carbon nanotube fiber; the yarn guiding mechanism comprises a multi-stage yarn guiding assembly, the multi-stage yarn guiding assembly is arranged on the fixing mechanism and is arranged relative to the yarn disc in sequence from near to far, and the carbon nanotube fibers sequentially pass through the yarn guiding assembly and are gathered step by step until a plurality of carbon nanotube fibers are combined into a bundle.
Further, including the godet board on the seal wire subassembly, set up a plurality of godet holes on the godet board, carbon nanotube fiber can pass the godet hole is passed through the yarn dish is close department the godet hole is ray form one by one and assembles the yarn dish is far away department in the godet hole.
Furthermore, the guide wire mechanism further comprises a multi-stage guide wheel, the first-stage guide wheel is arranged above the first-stage guide wire assembly, the second-stage guide wheel is arranged on one side, close to the first-stage guide wire assembly, of the second-stage guide wire assembly, and the like, and the last-stage guide wheel is arranged on one side, far away from the first-stage guide wire assembly, of the last-stage guide wire assembly.
Further, the height of the second-stage guide wheel is higher than that of the first-stage guide wheel.
Further, the wire drawing mechanism comprises a press roller, the press roller is connected with the yarn disc, and the press roller rotates and flattens the carbon nanotube fibers.
Further, the wire drawing mechanism also comprises a wire drawing die, the wire drawing die is arranged between the yarn disc and the pressing roller, and the carbon nanotube fiber is formed after the carbon nanotube film is drawn out from the substrate on which the carbon nanotube array grows and passes through the wire drawing die.
Further, fixed establishment includes the creel, include the backup pad that the multilayer stack set up on the creel, set up a plurality of in the backup pad yarn dish.
Further, the press rollers are connected with the supporting plate, the press rollers are arranged on one side of the yarn disc in pairs, and the axial direction of the press rollers is parallel to the yarn disc.
Further, the first-stage guide wire assembly is arranged at the top of the creel, the last-stage guide wire assembly is far away from the creel, and the other guide wire assemblies are arranged between the first-stage guide wire assembly and the last-stage guide wire assembly.
Further, the creel is the setting of multiunit antithetical couplet row mode, every group set up the multiseriate on the creel the yarn dish, every row the top of yarn dish sets up first order seal wire subassembly, every row is no less than to the quantity in the guide wire hole of seting up on the seal wire board of first order seal wire subassembly the quantity of yarn dish.
Further, the multiunit a plurality of at creel top first order seal wire subassembly is row setting, the last seal wire board perpendicular to of first order seal wire subassembly the seal wire board on the second level seal wire subassembly, the quantity in the seal wire hole of seting up on the seal wire board of second level seal wire subassembly is no less than the correspondence the quantity of first order seal wire subassembly.
The nanofiber's that this application provided spinning equipment, the basement that grows to have the carbon nanotube array sets up on the yarn dish, through wire drawing mechanism with carbon nanotube fiber traction and carry the seal wire subassembly on, the seal wire subassembly sets gradually by nearly to far away along the yarn dish, the carbon nanotube fiber is on the seal wire subassembly that the ray form assembled far away along the seal wire subassembly of near step by step, analogizes in proper order until a plurality of carbon nanotube fibers merge into a branch bundle. According to the nanofiber spinning device, the process of winding single fibers and then unwinding-doubling is omitted, the single fibers spun in a plurality of arrays are directly combined into one bundle and then wound on a bobbin, fiber loss is reduced, and production time and cost are saved; meanwhile, the drawing and doubling process of the carbon nano tube fiber are directly combined together, so that the production efficiency is improved.
A nanofiber spinning method comprises the nanofiber spinning device and further comprises the following steps:
arranging a plurality of yarn discs along the fixing mechanism, placing the substrate on which the carbon nanotube array grows on the plurality of yarn discs, and respectively drawing the substrate to form a carbon nanotube film;
the yarn disc is provided with a wire drawing mechanism, and the carbon nanotube film forms a single carbon nanotube fiber after passing through the wire drawing mechanism;
a yarn guide mechanism is arranged on the fixing mechanism and comprises a multi-stage yarn guide assembly, and the multi-stage yarn guide assembly is sequentially arranged from near to far relative to the yarn disc;
the carbon nano tube fibers sequentially pass through the multistage guide wire assembly step by step and are gathered into bundles.
Further, the wire drawing mechanism comprises a wire drawing die and a pressing roller, the carbon nanotube film is extruded into the single carbon nanotube fiber through the wire drawing die, and the carbon nanotube fiber is flattened through the pressing roller.
Furthermore, the yarn disc is in a multilayer overlapping mode, each row of the top of the yarn disc is provided with a first-stage yarn guide assembly, the first-stage yarn guide assembly comprises a first yarn guide hole, and a single carbon nanotube fiber penetrates into the first yarn guide hole.
Furthermore, the second seal wire subassembly sets up a plurality ofly one side of first stage seal wire subassembly, the second seal wire subassembly includes second seal wire hole, many carbon nanotube fiber warp the silk doubling in second seal wire hole.
Further, a third wire guide assembly is arranged at the farthest position of the yarn disc and comprises a third wire guide hole, and the carbon nanotube fibers after being combined are converged into a bundle after penetrating into the third wire guide hole.
The nanofiber spinning method comprises the steps of fixing a yarn disc with a carbon nanotube array substrate, drawing out a carbon nanotube film, processing the carbon nanotube film through a wire drawing die and a compression roller, obtaining flattened single carbon nanotube fibers, penetrating the single carbon nanotube fibers into a yarn guide assembly at the near position of the yarn disc, penetrating a plurality of carbon nanotube fibers into a yarn guide assembly at the far position after the plurality of carbon nanotube fibers are gathered, and repeating the steps until all the carbon nanotube fibers are gathered into one bundle. The spinning method can be suitable for carbon nanotube fiber bundles with different specification requirements, the guide wire assemblies in different combinations are arranged according to the number requirements of carbon nanotube fibers needing to be doubled, the doubling process can be realized during wire drawing, the method is simple and convenient, and the universality is high.
Drawings
Fig. 1 is a perspective view of a nanofiber spinning apparatus according to an embodiment of the present application;
FIG. 2 is a top view of a yarn disk of a nanofiber spinning apparatus according to one embodiment of the present application;
FIG. 3 is an enlarged view of a portion 1-1 of a nanofiber spinning apparatus according to an embodiment of the present application;
FIG. 4 is a perspective view of a primary guidewire assembly of the nanofiber spinning device of one embodiment of the present application;
FIG. 5 is a perspective view of a second stage guidewire assembly of the nanofiber spinning device of one embodiment of the present application;
FIG. 6 is a perspective view of a tertiary guidewire assembly of the nanofiber spinning device of one embodiment of the present application;
fig. 7 is a flow chart of a method of spinning nanofibers according to one embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, fig. 1 is a perspective view illustrating a nanofiber spinning apparatus according to an embodiment of the present invention, the nanofiber spinning apparatus includes a fixing mechanism 1, a drawing mechanism (not identified), and a yarn guiding mechanism 2, wherein the yarn guiding mechanism 2 and the drawing mechanism are disposed on the fixing mechanism 1, the fixing mechanism 1 includes a plurality of yarn discs 13, and a substrate on which a carbon nanotube array is grown is disposed on the yarn discs 13. The wire drawing mechanism is arranged at the yarn disc 13 and comprises a wire drawing die (not shown) and a pressing roller 31, a carbon nanotube film drawn from the carbon nanotube array is extruded by the wire drawing die and the pressing roller 31 to form a single flat carbon nanotube fiber, and then the single carbon nanotube fiber sequentially penetrates into the wire guiding mechanism 2 and is gradually converged into a bundle of carbon nanotube fibers in the wire guiding mechanism 2. The wire guide mechanism 2 comprises a multi-stage wire guide assembly, the multi-stage wire guide assembly is arranged on the fixing mechanism 1 and is sequentially arranged from near to far relative to the yarn disc 13, single carbon nanotube fibers 41 passing through the wire drawing mechanism are sequentially gathered into carbon nanotube fiber bundles 42 through the multi-stage wire guide assembly step by step, and finally the carbon nanotube fiber bundles are wound and formed through a winding machine.
Further referring to fig. 1, the fixing mechanism 1 includes a plurality of creels 11, the creels 11 are arranged in a row, each creel 11 is provided with a support plate 12, the support plates 12 are arranged in a multi-layer stacking manner, yarn trays 13 are arranged on the support plates 12, and the yarn trays 13 are used for placing a substrate on which a carbon nanotube array is grown. The embodiment shown in fig. 1 comprises five creels 11, each creel 11 comprises five support plates 12, two yarn disks 13 are symmetrically arranged on each support plate 12, and the carbon nanotube arrays on the yarn disks 13 are drawn into carbon nanotube films. In this embodiment, a total of 50 reels 13 are provided, and at most 50 substrates of carbon nanotube arrays can be placed, and each substrate is drawn into a carbon nanotube film and extruded by a drawing mechanism to form one carbon nanotube fiber 41, so that at most 50 carbon nanotube fibers 41 can be combined in the embodiment shown in fig. 1.
With the embodiment shown in fig. 1, not only the processing and forming process of the carbon nanotube fiber can be realized, but also the doubling of at most 50 carbon nanotube fibers can be realized. It should be noted that too many yarn reels may cause the path of the last rows of carbon nanotube fibers to be too long, the tension is not easy to control, and the doubling effect is affected, therefore, the technical solution provided by the present application is suggested to be applied to 2 to 100 yarn reels, that is, the doubling of 100 carbon nanotube fibers can be simultaneously achieved at most.
Fig. 2 shows a top view of a yarn disc of a nanofiber spinning device according to an embodiment of the present invention, and as shown in fig. 1, a drawing mechanism includes a pressing roller 31 and a drawing die 32, preferably, the drawing die 32 includes a diamond drawing die, a pair of pressing rollers 31 is disposed on one side of each yarn disc 13, an axis of the pressing roller 31 is parallel to a plane where the yarn disc 31 is located, a carbon nanotube array on the yarn disc 13 is drawn to form a carbon nanotube film, and then the carbon nanotube film is drawn to form a single carbon nanotube fiber 41 by the drawing die 32, and the carbon nanotube fiber 41 is flattened by rolling of the pressing roller 31 to form a flat carbon nanotube fiber 41.
The nanofiber spinning device provided by the application is matched with a five-roller tractor for use, carbon nanotube fibers are drawn out by the five-roller tractor, the integral tension range of the five-roller tractor is 0.1-0.5N, the speed is 1-20 m/min, and the rotating speed of the compression roller 31 is consistent with that of the five-roller tractor. The carbon nanotube film is extruded and formed by a wire drawing die 32 and then is flattened by a pressing roller 31 to obtain a single carbon nanotube fiber 41 with an irregular and flat cross section, the aperture size of the wire drawing die 32 is 50-200 mu m, the extrusion pressure of the pressing roller 31 is 1-100N, and the rotating speed is 1-20 m/min. Then, the single carbon nanotube fiber 41 is extruded and doubled by the yarn guide mechanism to finally form a carbon nanotube fiber bundle 42 with a relatively compact texture, and finally, the carbon nanotube fiber bundle is wound and formed by the winding machine.
The guide wire mechanism 2 comprises a multistage guide wire assembly and multistage guide wheels, wherein the multistage guide wheels are used for assisting the carbon nanotube fibers on the multistage guide wire assembly to be in smooth transition, and therefore each stage of guide wheels is arranged close to the guide wire assembly at the same stage. The yarn guiding assembly extends from the near part of the yarn disc 13 to a far part, and the single carbon nanotube fiber 41 on the yarn disc 13 is gradually gathered together, that is, the carbon nanotube fiber 41 firstly penetrates the yarn guiding assembly close to the yarn disc 13, then the multiple carbon nanotube fibers 41 are gathered on the next stage of yarn guiding assembly in a radial shape through the yarn guiding assembly, then the multiple carbon nanotube fibers 41 are combined through the next stage of yarn guiding assembly, and the like is performed until the multiple carbon nanotube fibers 41 are combined into a bundle of carbon nanotube fiber 42. Each stage of wire guiding assembly comprises a wire guiding plate and wire guiding holes, the wire guiding plate is provided with a plurality of wire guiding holes, the wire guiding holes are used for penetrating the carbon nano tube fibers 41, and meanwhile, the wire guiding plate on the previous station collects the carbon nano tube fibers 41 and then assembles the carbon nano tube fibers onto the wire guiding plate on the next station in a radial shape, so that the purpose of combining the carbon nano tube fibers 41 step by step is achieved.
Preferably, the yarn guiding mechanism 2 provided by the present application includes three-stage yarn guiding assemblies, the three-stage yarn guiding assemblies are arranged on the fixing mechanism 1 and are sequentially arranged from near to far relative to the yarn disc 13, and the single carbon nanotube fiber 41 passing through the wire drawing mechanism sequentially passes through the multi-stage yarn guiding assemblies to gradually converge into a bundle. Correspondingly, in the first embodiment, a third-stage guide wheel is provided, the first-stage guide wheel 211 is disposed above the first-stage guide wire assembly 21, the second-stage guide wheel 221 is disposed on a side of the second-stage guide wire assembly 22 close to the first-stage guide wire assembly 21, and so on, and the third-stage guide wheel 231 is disposed on a side of the third-stage guide wire assembly 23 far from the first-stage guide wire assembly 21.
The first stage guide wire assembly 21 is arranged at the top of the creel 11, the third stage guide wire assembly 23 is arranged at one end part of the fixing mechanism 1, and the second stage guide wire assembly 22 is arranged between the first stage guide wire assembly 21 and the third stage guide wire assembly 23. In the present embodiment, the third stage guide wire assembly 23 is provided at the farthest position from the yarn reel 13 because the third stage guide wire assembly 23 is used for the final doubling of the plurality of carbon nanotube fibers, and the third stage guide wire assembly 23 may be provided on the fixing mechanism 1 or may be separated from the fixing mechanism 1, so that a designer can select an appropriate connection method according to actual needs.
The first stage guiding assembly 21 is used for performing a first doubling on a plurality of single carbon nanotube fibers 41, so that the first stage guiding assembly 21 is disposed corresponding to the yarn disc 13, specifically, in the embodiment provided in the present application, the yarn disc 13 is disposed on the creel 11 in a row, and one first stage guiding assembly 21 is disposed on the top of each row of yarn disc 13. The second stage guide wire assembly 22 is used for doubling the plurality of carbon nanotube fibers 41 on the first stage guide wire assembly 21, therefore, the second stage guide wire assembly 22 should be arranged corresponding to the first stage guide wire assembly 21, the first stage guide wire assemblies 21 should be arranged in rows, and each row of the first stage guide wire assemblies 21 corresponds to one second stage guide wire assembly 22. The tertiary guide wire assembly 23 is used to bundle all the carbon nanotube fibers 41, so that one tertiary guide wire assembly 23 can be provided, and all the carbon nanotube fibers 41 on the secondary guide wire assembly 22 can penetrate into the tertiary guide wire assembly 23 and be combined into a bundle.
Fig. 3 shows a partially enlarged view of 1-1 of a nanofiber spinning apparatus according to an embodiment of the present application, fig. 4 shows a perspective view of a primary guide wire assembly of the nanofiber spinning apparatus according to an embodiment of the present application, fig. 5 shows a perspective view of a secondary guide wire assembly of the nanofiber spinning apparatus according to an embodiment of the present application, and fig. 6 shows a perspective view of a tertiary guide wire assembly of the nanofiber spinning apparatus according to an embodiment of the present application, in combination with the embodiments shown in fig. 1-6, the primary guide wire assembly 21 is disposed on the top of the creel 11, each row of yarn reels 13 corresponds to one primary guide wire assembly 21, and carbon nanotube fibers 41 on all the yarn reels 13 of the row are collected by the primary guide wire assembly 21. The first-stage wire guiding assembly 21 comprises a first wire guiding plate 212, the first wire guiding plate 212 is provided with first wire guiding holes 213, and the number of the first wire guiding holes 213 is not less than the number of yarn reels 13 in each row. Preferably, five first godet holes 213 are formed in the first godet plate 212, the diameter of each first godet hole 213 is 50-200 μm, the single carbon nanotube fiber 41 drawn from each row of five reels 13 can be respectively inserted into the first godet holes 213, and only one carbon nanotube fiber 41 can be inserted into each first godet hole 213. A first stage guide wheel 211 is disposed above the first stage guide wire assembly 21 for supporting the carbon nanotube fibers 41.
The second-stage wire guiding assembly 22 is arranged on one side of the five first-stage wire guiding assemblies 21, the second-stage wire guiding assembly 22 comprises a second wire guiding plate 222, and the number of second wire guiding holes formed in the second wire guiding plate 222 of the second-stage wire guiding assembly 22 is not less than the number of the corresponding first-stage wire guiding assemblies 21. Preferably, ten second wire holes 223 are formed in the second wire guide plate 222, the diameter of each second wire hole 223 is 300 μm, and each second wire hole 223 corresponds to one first wire guide plate 212, that is, five carbon nanotube fibers 41 penetrating through one first wire guide plate 212 can penetrate into one second wire hole 223, so that the number of the second wire holes 223 is not less than that of the first-stage wire guide assemblies 21. The second-stage guide wheel 221 is disposed between the first-stage guide wheel assembly 21 and the second-stage guide wheel assembly 22 and is used for supporting a plurality of carbon nanotube fibers 41, and the height of the second-stage guide wheel 221 is higher than that of the first-stage guide wheel 211 by about 3cm, so that the carbon nanotube fibers 41 can be lifted, the carbon nanotube fibers 41 supported by different first-stage guide wheels 211 cannot interfere with each other, and the tension of the carbon nanotube fibers 41 and the second guide holes 223 is reduced.
Preferably, the hole pitch between the first wire hole 213 and the second wire hole 223 is preferably 5mm, and the first wire hole 213 located at the outermost side of the yarn reel 13 corresponds to the lowest yarn reel 13, so as to ensure that the plurality of carbon nanotube fibers 41 do not collide or rub with each other.
The third guiding assembly 23 includes a third guiding plate 231, a third guiding hole 233 is disposed on the third guiding plate 231, preferably, the aperture of the third guiding hole 233 is 300-.
Further, in order to better achieve the doubling, the first godet plate 212 is disposed in parallel with the yarn reel 13, so that the carbon nanotube fiber 41 is inserted into the first godet hole 213 in a nearly vertical direction, the plane of the first godet plate 212 is perpendicular to the plane of the second godet plate 222, and the carbon nanotube fiber 41 is also inserted into the second godet hole 223 in a nearly vertical direction, thereby preventing the carbon nanotube fiber 41 from being worn.
It should be noted that the above embodiments are only directed to the first example of the present application, and the combination of 50 carbon nanotube fibers into one carbon nanotube fiber bundle does not mean that the embodiments provided in the present application are limited to the above combinations. The technical scheme that this application provided can satisfy the carbon nanotube fibre doubling technology of a large number, simultaneously, can realize different doubling effects through establishing the wire guide hole that sets up different quantity and combination at the wire guide plate, if set up a plurality of third wire guide holes 233 on third wire guide plate 231, a plurality of carbon nanotube fibre bundles can be formed simultaneously on third wire guide hole 233 to the many carbon nanotube fibre that collect through second wire guide plate 222. In addition, the aperture of each wire guide hole on the wire guide component is determined according to the quantity of the carbon nano tube fiber penetrating into each hole.
The carbon nanotube fiber bundles 42 after being combined are directly wound on the bobbin under certain tension and are not easy to scatter, but are unwound from the bobbin when in use and are easy to scatter when no tension exists, so that sizing agent treatment can be carried out on the carbon nanotube fiber bundles, certain adhesion force is provided between the carbon nanotube fiber bundles, and the effects of protecting fibers and improving fiber wettability are achieved. Preferably, a sizing agent commonly used for carbon fibers is used.
The carbon nanotube fiber obtained by the array mode has better orientation, higher purity of the carbon nanotube and highest mechanical property, but only can produce single carbon nanotube fiber, and the adjacent carbon nanotube can be adsorbed together with the dragged carbon nanotube under the action of friction force and van der Waals force after the carbon nanotube on the substrate is dragged out, and so on, thereby dragging out longer carbon nanotube fiber.
The application provides a spinning device, the basement that grows to have the carbon nanotube array sets up on the yarn dish, through wire drawing mechanism preparation carbon nanotube fibre and pull carry the seal wire subassembly on, the seal wire subassembly sets gradually by nearly to far away along the yarn dish, the carbon nanotube fibre is ray form one by one and assembles the seal wire subassembly in far away along the seal wire subassembly in near, analogizes in proper order until a plurality of carbon nanotube fibre merge into a bundle. According to the nanofiber spinning device, the process of winding single fibers and then unwinding-doubling is omitted, the single fibers spun in a plurality of arrays are directly combined into one bundle and then wound on a bobbin, fiber loss is reduced, and production time and cost are saved; meanwhile, the drawing and doubling process of the carbon nano tube fiber are directly combined together, so that the production efficiency is improved.
Fig. 7 shows a flowchart of a nanofiber spinning method according to an embodiment of the present application, and the nanofiber spinning method provided by the present application includes the nanofiber spinning apparatus described above, and further includes the following steps:
s121, arranging a plurality of yarn discs along the fixing mechanism, placing the substrate on which the carbon nanotube array grows on the plurality of yarn discs, and respectively drawing the substrate to form a carbon nanotube film;
referring to fig. 1, a plurality of yarn disks 13 are disposed on the fixing mechanism 1, preferably, the plurality of yarn disks 13 are disposed in an arrangement manner, a substrate on which the carbon nanotube array is grown is disposed on the yarn disks 13, and the carbon nanotube film can be drawn from the yarn disks 13. It should be noted that the reels 13 shown in fig. 1 are arranged on creels 11, and preferably 5 layers of reels 13 are arranged on each creel 11, each layer comprising two reels 13.
S122, arranging a wire drawing mechanism at the yarn disc, and forming a single carbon nanotube fiber by the carbon nanotube film through the wire drawing mechanism;
referring to fig. 1 to 6, a wire drawing mechanism is disposed at the yarn reel 13, the wire drawing mechanism includes a wire drawing die 32 and a pressing roller 31, the carbon nanotube film is extruded by the wire drawing die 32 to form a single carbon nanotube fiber 41, the single carbon nanotube fiber 41 is flattened by the pressing roller 31, the flattened carbon nanotube fiber 41 is irregular and flat, and then the flat carbon nanotube fiber 41 is subjected to a yarn doubling process.
S123, arranging a wire guide mechanism on the fixing mechanism, wherein the wire guide mechanism comprises a plurality of stages of wire guide assemblies which are sequentially arranged from near to far relative to the yarn disc;
the yarn guiding mechanism 2 is arranged on the fixing mechanism 1, the yarn guiding mechanism 2 comprises a plurality of stages of yarn guiding components, the yarn guiding components are sequentially arranged from a near position to a far position relative to the yarn disc 13, and single carbon nanotube fibers 41 pulled out from each row of yarn discs 13 gradually penetrate into the yarn guiding components and gradually converge to finally form a bundle of carbon nanotube fiber bundles 42.
And S124, sequentially passing the carbon nanotube fibers through the multistage guide wire assembly step by step and converging the carbon nanotube fibers into a bundle.
Referring to fig. 1, the fixing mechanism 1 includes a creel 11, the creel 11 is arranged in a plurality of rows, yarn discs 13 are stacked on the creel 11, a single carbon nanotube fiber 41 is drawn from each row of yarn discs 13 and integrated at the first stage of yarn guiding assembly 21, a plurality of carbon nanotube fibers 41 on the first stage of yarn guiding assembly 21 penetrate into the next stage of yarn guiding assembly, such as the second stage of yarn guiding assembly 22, and then the carbon nanotube fibers 41 after being combined are combined into a bundle through the third stage of yarn guiding assembly 23. The above steps are repeated to gradually merge the carbon nanotube fibers 41 on the multi-stage guide wire assembly, and finally a bundle of complete carbon nanotube fiber bundles 42 is formed. The number of the guide wire components is consistent with the number of times of combining the carbon nanotube fibers, and technicians can design the guide wire components according to the size of the carbon nanotube fiber bundle to be finally realized.
Referring to fig. 2, the drawing mechanism includes a drawing die 32 and a pressing roller 31, the carbon nanotube film is extruded into a single carbon nanotube fiber 41 by the drawing die 32, and the carbon nanotube fiber 41 is flattened by the pressing roller 31.
Further, yarn dish 13 is the setting of multilayer stack form, and every layer sets up 2 yarn dishes 13 to make yarn dish 13 arrange in a form of being listed as in a row in vertical, the top of every yarn dish 13 sets up first order seal wire subassembly 21, and first order seal wire subassembly 21 includes first seal wire hole 213, and single carbon nanotube fiber 41 penetrates in first seal wire hole 213.
Further, the second wire guiding assembly 22 is disposed at one side of the plurality of first-stage wire guiding assemblies 21, the second wire guiding assembly 22 includes a second wire guiding hole 223, and the plurality of single carbon nanotube fibers 41 are gathered in the second wire guiding hole 223 and are combined. The first combination of the carbon nanotube fibers is performed through the second wire holes 223 and the first wire holes 213.
Further, the third wire assembly 23 is disposed at the farthest position of the yarn reel 13, the third wire assembly 23 includes a third wire hole 233, preferably, the number of the third wire holes 233 is one, and the carbon nanotube fibers 41 which are doubled by the second wire holes 223 are all penetrated into the third wire holes 233 and then are gathered into a bundle.
It should be noted that, in the above-mentioned nanofiber spinning method, three-step merging and bundling are performed by using a three-step yarn guide assembly, but it does not mean that the method provided by the present application is only applicable to a three-step method, and a technician may set an appropriate merging step according to actual needs, so that a plurality of single carbon nanotube fibers are merged step by step, and finally a bundle of carbon nanotube fiber bundle is formed.
The nanofiber spinning method comprises the steps of fixing a yarn disc with a carbon nanotube array substrate, drawing out a carbon nanotube film, processing the carbon nanotube film through a wire drawing die and a compression roller, obtaining flattened single carbon nanotube fibers, penetrating the single carbon nanotube fibers into a yarn guide assembly at the near position of the yarn disc, penetrating a plurality of carbon nanotube fibers into a yarn guide assembly at the far position after the plurality of carbon nanotube fibers are gathered, and repeating the steps until all the carbon nanotube fibers are gathered into one bundle. The spinning method can be suitable for carbon nanotube fiber bundles with different specification requirements, the guide wire assemblies in different combinations are arranged according to the number requirements of carbon nanotube fibers needing to be doubled, the doubling process can be realized during wire drawing, the method is simple and convenient, and the universality is high.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (16)
1. A nanofiber spinning device is used for a carbon nanotube fiber drawing and doubling process, and is characterized by comprising the following steps:
the fixing mechanism comprises a plurality of yarn discs, and the yarn discs are used for placing a substrate on which the carbon nanotube array grows;
the wire drawing mechanism is connected with the fixing mechanism and is used for processing the substrate on which the carbon nanotube array grows to form the carbon nanotube fiber;
the yarn guiding mechanism comprises a multi-stage yarn guiding assembly, the multi-stage yarn guiding assembly is arranged on the fixing mechanism and is arranged relative to the yarn disc in sequence from near to far, and the carbon nanotube fibers sequentially pass through the yarn guiding assembly and are gathered step by step until a plurality of carbon nanotube fibers are combined into a bundle.
2. The nanofiber spinning device according to claim 1, wherein the yarn guide assembly comprises a yarn guide plate, the yarn guide plate is provided with a plurality of yarn guide holes, and the carbon nanotube fibers can pass through the yarn guide holes and be converged into the yarn guide holes at the far position of the yarn disc in a radial shape one by one through the yarn guide holes at the near position of the yarn disc.
3. The nanofiber spinning device according to claim 2, wherein the guide wire mechanism further comprises a multi-stage guide wheel, the first stage guide wheel is arranged above the first stage guide wire assembly, the second stage guide wheel is arranged on one side, close to the first stage guide wire assembly, of the second stage guide wire assembly, and so on, and the last stage guide wheel is arranged on one side, far away from the first stage guide wire assembly, of the last stage guide wire assembly.
4. The nanofiber spinning device of claim 3, wherein the height of the second-stage guide wheel is higher than the height of the first-stage guide wheel.
5. The nanofiber spinning apparatus of claim 3, wherein the drawing mechanism comprises a press roll, the press roll is connected to the yarn disc, and the press roll rotates and flattens the carbon nanotube fibers.
6. The nanofiber spinning apparatus as claimed in claim 5, wherein said drawing mechanism further comprises a drawing die disposed between said reel and said pressing roller, and said carbon nanotube fibers are formed after said drawing die is passed after a carbon nanotube film is drawn from said substrate on which said carbon nanotube array is grown.
7. The nanofiber spinning device according to claim 5, wherein the fixing mechanism comprises a creel, the creel comprises a plurality of layers of stacked supporting plates, and a plurality of yarn discs are arranged on the supporting plates.
8. The nanofiber spinning device according to claim 7, wherein the press rollers are connected to the support plate, the press rollers are arranged in pairs on one side of the yarn disk, and the axial direction of the press rollers is parallel to the yarn disk.
9. The nanofiber spinning apparatus of claim 7, wherein said first stage guide wire assembly is disposed on top of said creel, said last stage guide wire assembly is disposed away from said creel, and other said guide wire assemblies are disposed between said first stage guide wire assembly and said last stage guide wire assembly.
10. The nanofiber's spinning device of claim 9, wherein the creel is that the multiunit allies oneself with the row mode and sets up, every group set up the multiseriate on the creel the yarn dish, every row the top of yarn dish sets up first order seal wire subassembly, every row is no less than to the quantity in the seal wire hole of seting up on the seal wire board of first order seal wire subassembly the quantity of yarn dish.
11. The nanofiber spinning device according to claim 10, wherein a plurality of the first-stage yarn guide assemblies at the tops of the creels are arranged in rows, yarn guide plates on the first-stage yarn guide assemblies are perpendicular to yarn guide plates on the second-stage yarn guide assemblies, and the number of yarn guide holes formed in the yarn guide plates of the second-stage yarn guide assemblies is not less than the number of the corresponding first-stage yarn guide assemblies.
12. A method of spinning nanofibers comprising the apparatus of any one of claims 1 to 11, further comprising the steps of:
arranging a plurality of yarn discs along the fixing mechanism, placing the substrate on which the carbon nanotube array grows on the plurality of yarn discs, and respectively drawing the substrate to form a carbon nanotube film;
the yarn disc is provided with a wire drawing mechanism, and the carbon nanotube film forms a single carbon nanotube fiber after passing through the wire drawing mechanism;
a yarn guide mechanism is arranged on the fixing mechanism and comprises a multi-stage yarn guide assembly, and the multi-stage yarn guide assembly is sequentially arranged from near to far relative to the yarn disc;
the carbon nano tube fibers sequentially pass through the multistage guide wire assembly step by step and are gathered into bundles.
13. The method of spinning nanofibers according to claim 12, wherein said drawing mechanism comprises a drawing die and a pressing roller, said carbon nanotube film is extruded into said single carbon nanotube fiber through said drawing die, and said carbon nanotube fiber is flattened through said pressing roller.
14. The nanofiber spinning method according to claim 12, wherein the yarn reels are arranged in a multi-layer stacked manner, a first-stage yarn guiding assembly is arranged at the top of each row of the yarn reels, the first-stage yarn guiding assembly comprises first yarn guiding holes, and the single carbon nanotube fibers penetrate into the first yarn guiding holes.
15. The nanofiber spinning method according to claim 14, wherein a second guide wire assembly is disposed at one side of the plurality of first stage guide wire assemblies, the second guide wire assembly includes a second guide wire hole, and the plurality of carbon nanotube fibers are combined through the second guide wire hole.
16. The nanofiber spinning method according to claim 15, wherein a third guide wire assembly is disposed at the farthest position of the yarn reel, the third guide wire assembly comprises a third guide wire hole, and the carbon nanotube fibers after being combined are converged into one bundle after penetrating into the third guide wire hole.
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