CN105220246A - A multi-strand air-jet friction yarn forming device and preparation method for electrospinning nanofibers - Google Patents
A multi-strand air-jet friction yarn forming device and preparation method for electrospinning nanofibers Download PDFInfo
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- 239000002121 nanofiber Substances 0.000 title claims abstract description 107
- 238000001523 electrospinning Methods 0.000 title claims description 22
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000009987 spinning Methods 0.000 claims abstract description 64
- 239000002184 metal Substances 0.000 claims abstract description 51
- 238000004804 winding Methods 0.000 claims abstract description 42
- 238000010041 electrostatic spinning Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 19
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- 229920000642 polymer Polymers 0.000 abstract description 7
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- 239000004753 textile Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
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Abstract
本发明提供了一种多股喷气摩擦静电纺成纱装置，主要包括喷丝装置、摩擦辊、金属棒、导纱装置和卷绕装置。喷丝装置由溶液室和沿溶液室两侧对称排列的多个气室构成，溶液室下方设有一组沿同一轴线排列的喷丝孔，喷丝装置与高压发生器正极相连，喷丝装置下方是两个平行排列的金属摩擦辊，两个摩擦辊的一端通过齿轮与电机相连，另一端通过抽气管与涡流风机相连，摩擦辊下方是与高压发生器负极相连的金属棒，摩擦辊两端分别设有导纱器和卷绕装置。本发明的多股喷气摩擦静电纺成纱装置制备工艺简单、纳米纤维纱产量高，且适用于各种高聚物纺丝溶液，能够满足纳米纤维纱线规模化和连续化制备。The invention provides a multi-strand air-jet friction electrostatic spinning device, which mainly includes a spinning device, a friction roller, a metal rod, a yarn guiding device and a winding device. The spinneret consists of a solution chamber and a number of air chambers arranged symmetrically along both sides of the solution chamber. A group of spinneret holes arranged along the same axis are arranged under the solution chamber. The spinneret is connected to the positive pole of the high-voltage generator. It is two metal friction rollers arranged in parallel. One end of the two friction rollers is connected to the motor through gears, and the other end is connected to the vortex fan through the exhaust pipe. Below the friction rollers is a metal rod connected to the negative pole of the high-voltage generator. A yarn guide and a winding device are respectively provided. The multi-strand air-jet friction electrostatic spinning device of the present invention has simple preparation process, high yield of nanofiber yarn, is suitable for various high polymer spinning solutions, and can meet the large-scale and continuous preparation of nanofiber yarn.
Description
技术领域 technical field
本发明属于纺织领域，涉及一种静电纺纳米纤维成纱装置和方法，具体涉及一种可规模化连续制备静电纺纳米纤维纱线的多股喷气摩擦成纱装置和方法。 The invention belongs to the field of textiles, and relates to an electrospinning nanofiber yarn forming device and method, in particular to a multi-strand air-jet friction yarn forming device and method capable of large-scale and continuous preparation of electrospinning nanofiber yarns.
背景技术 Background technique
静电纺丝是一种制备纳米纤维简单而又有效的方法。传统静电纺丝的基本原理，即在强电场中，聚合物溶液液滴在喷丝头处形成“泰勒锥”，当静电场力超过液滴表面张力阈值，溶液液滴被抽长、拉细形成带电射流，经溶剂挥发固化形成无规取向的纳米纤维毡。静电纺纳米纤维因其超细尺度、高表面积和孔隙率等特点，已在服装、生物医用、复合材料、过滤材料和传感器等多领域显示广阔的应用前景。然而，传统的静电纺丝方法只能得到无规排列的纳米纤维无纺毡，产品形式单一，产量较低，纳米纤维毡的二次加工性和机械性能较差，极大限制了其应用。因此，静电纺丝加工得到的纳米纤维只有加工成连续的纱线，才能运用机织、针织、编织等纺织技术加工，从而将纳米纤维融合到更广阔、更有意义的市场中。此外，纳米纤维纱中纤维沿轴取向可赋予材料独特的光学、电学、力学性能，因而有更高附加值的运用。 Electrospinning is a simple and effective method to prepare nanofibers. The basic principle of traditional electrospinning is that in a strong electric field, the polymer solution droplets form a "Taylor cone" at the spinneret. When the electrostatic field force exceeds the droplet surface tension threshold, the solution droplets are elongated and thinned. A charged jet is formed, and a randomly oriented nanofiber mat is formed through solvent volatilization and solidification. Due to its ultra-fine size, high surface area and porosity, electrospun nanofibers have shown broad application prospects in many fields such as clothing, biomedicine, composite materials, filter materials and sensors. However, the traditional electrospinning method can only obtain randomly arranged nanofiber non-woven mats, the product form is single, the yield is low, and the secondary processability and mechanical properties of nanofiber mats are poor, which greatly limits its application. Therefore, the nanofibers obtained by electrospinning can only be processed into continuous yarns before they can be processed by weaving, knitting, weaving and other textile technologies, so as to integrate nanofibers into a broader and more meaningful market. In addition, the axial orientation of the fibers in the nanofiber yarn can endow the material with unique optical, electrical, and mechanical properties, and thus have higher value-added applications.
近年来，有关静电纺连续纳米纤维成纱的报道相继出现。Smit[EugeneSmit,Polymer,2005,46,2419]和Teo[Wee-EongTeo,Polymer,2007,48,3400]等利用凝固浴，使纳米纤维以薄膜的形式沉积在凝固浴液体的表面，得到连续的纳米纤维纱。这种可以实现纳米纤维的连续成纱，但是纱线中纤维的平行度较差，且只适用凝固浴是导电的聚合物纳米纤维。Gu[BKGu,AppliedPhysicsLetters,2007,90,263902]等利用安放在针头和接地收集板之间的多边形电极创造一个旋转的电场来加捻纳米纤维，这种成纱机理可以形成有捻纱，纤维在电极表面的粘连，且只能形成很短长度的纳米纤维纱。Dabirian[FDabirian,Fibers&Polymers,2011,12,610]和Ali[UsmanAli,JournaloftheTextileInstitute,2012,103,80]等发展了一种共轭加捻法，就是在两个极性相反的喷头中间配置旋转的金属圆盘或喇叭集聚和加捻纤维束，实现了纳米纤维连续成纱。这些纺纱采用的均是传统的单针头静电纺丝系统，存在产量低，细度小，纺纱过程不稳定的局限。此外，这些方法不能纺丝过程中射流的稳定运动，不能实现纳米纤维的定向凝聚。Tonin[CTonin,Sci.Dir.,2007,43,2792]等在喷丝头和接收装置间放置一个绝缘圆柱腔，利用切向射入圆柱腔的旋转气流带动纳米纤维向接收装置移动，最后形成纳米纤维纱，但未提供纳米纤维纱的电镜图片。Li[NLi,Mater.Lett.,2012,79,245]等通过对漏斗形接收装置抽气，利用负压将纳米纤维吸入接收装置内，得到不连续的纳米纤维纱。 In recent years, reports on electrospinning continuous nanofiber yarns have emerged. Smit [EugeneSmit, Polymer, 2005, 46, 2419] and Teo [Wee-EongTeo, Polymer, 2007, 48, 3400], etc. use the coagulation bath to deposit nanofibers in the form of a film on the surface of the coagulation bath liquid to obtain continuous nanofiber yarn. This can realize the continuous yarn formation of nanofibers, but the parallelism of fibers in the yarns is poor, and it is only suitable for polymer nanofibers whose coagulation bath is conductive. Gu [BKGu, AppliedPhysicsLetters, 2007, 90, 263902] et al. used a polygonal electrode placed between the needle and the grounded collector plate to create a rotating electric field to twist nanofibers. This yarn forming mechanism can form twisted yarns, and the fibers are in Adhesion of the electrode surface, and only short lengths of nanofiber yarns can be formed. Dabirian [FDabirian, Fibers & Polymers, 2011, 12, 610] and Ali [Usman Ali, Journal of the Textile Institute, 2012, 103, 80] have developed a conjugate twisting method, which is to arrange a rotating metal disc between two nozzles with opposite polarities. Or the trumpet gathers and twists the fiber bundles to realize continuous yarn formation of nanofibers. These spinning methods all adopt the traditional single-needle electrospinning system, which has the limitations of low output, small fineness and unstable spinning process. In addition, these methods cannot achieve the stable movement of the jet during spinning and cannot achieve the directional cohesion of nanofibers. Tonin [CTonin, Sci.Dir., 2007, 43, 2792] placed an insulating cylindrical cavity between the spinneret and the receiving device, and used the rotating air flow tangentially injected into the cylindrical cavity to drive the nanofibers to move to the receiving device, and finally formed nanofiber yarns, but electron microscopy pictures of nanofiber yarns are not provided. Li [NLi, Mater. Lett., 2012, 79, 245] etc. pumped the funnel-shaped receiving device, and sucked the nanofibers into the receiving device by negative pressure to obtain discontinuous nanofiber yarns.
发明内容 Contents of the invention
本发明目的是提供一种静电纺纳米纤维纱线的多股喷气摩擦成纱装置，可连续规模化制备纤维定向排列和条干均匀度较好的纳米纤维纱线，提供上述多股喷气摩擦成纱装置制备纳米纤维纱线的方法。 The object of the present invention is to provide a multi-strand air-jet friction yarn forming device for electrospinning nanofiber yarns, which can continuously prepare nanofiber yarns with fiber orientation and evenness on a large scale, and provide the above-mentioned multi-strand air-jet friction yarn forming device. Yarn device for preparing nanofiber yarns.
本发明技术方案是：一种多股喷气摩擦静电纺成纱装置，它包括喷丝装置，喷丝装置通过输液管与供液装置相连接。喷丝装置正下方设有两个平行排列的摩擦辊，两个摩擦辊的一端通过齿轮与电机相连，另一端通过抽气管与涡流风机相连，摩擦辊两端分别设有导纱器和卷绕装置，摩擦辊下方装有金属棒，高压发生器正、负极分别与喷丝装置和金属棒相连接。所述摩擦辊、金属棒和导纱器均安装在基座上。 The technical scheme of the present invention is: a multi-strand air-jet friction electrostatic spinning device, which includes a spinning device, which is connected with a liquid supply device through an infusion tube. There are two friction rollers arranged in parallel directly under the spinning device. One end of the two friction rollers is connected to the motor through a gear, and the other end is connected to the vortex fan through an air suction pipe. The two ends of the friction roller are respectively equipped with a yarn guide and a winding machine. device, a metal rod is installed under the friction roller, and the positive and negative poles of the high-voltage generator are respectively connected with the spinning device and the metal rod. The friction rollers, metal rods and yarn guides are all installed on the base.
所述喷丝装置由溶液室和沿溶液室两侧对称排列的多个气室构成，所述溶液室下方设有一排沿同一轴线排列的喷丝孔，所述喷丝孔直径0.01-5mm，间距0.01-10mm，数量大于等于1个。所述多个气室分别通过进气管与气泵相连接，每个气室下方设有角度不同的气道，气道均为狭长型斜槽，气道在喷丝孔两侧对称排列，气道与水平面夹角从邻近喷丝孔开始由内至外逐步增加，最外侧气道角度￡89°，与喷丝孔相邻的最内侧气道角度为10-70°，气道数量大于等于1个。 The spinning device is composed of a solution chamber and a plurality of air chambers arranged symmetrically along both sides of the solution chamber. A row of spinneret holes arranged along the same axis are arranged below the solution chamber. The diameter of the spinneret holes is 0.01-5mm. The spacing is 0.01-10mm, and the quantity is greater than or equal to 1. The multiple air chambers are respectively connected to the air pump through the air inlet pipe, and air passages with different angles are arranged under each air chamber, and the air passages are all narrow and long inclined grooves, and the air passages are symmetrically arranged on both sides of the spinneret holes. The angle with the horizontal plane gradually increases from the inside to the outside from the adjacent spinneret hole, the outermost airway angle is ￡89°, the innermost airway angle adjacent to the spinneret hole is 10-70°, and the number of airways is greater than or equal to 1.
所述摩擦辊为表面带孔的圆管。两个摩擦辊均采用金属材质，摩擦辊直径1-1000mm，壁厚0.1-50mm，摩擦辊表面孔径0.01-10mm，孔间距0.01-10mm，所述两个摩擦辊平行排列，摩擦辊之间狭缝宽度（注：两个摩擦辊表面最小距离）0.01-5mm，两个摩擦辊一端与电机相连，电机转速10-1000r/min；另一端与涡流风机相连，涡流风机压力-0.5-0Mpa，所述的电机与涡流风机均用绝缘材料包覆，避免纺丝电场的干扰。 The friction roller is a round tube with holes on the surface. The two friction rollers are made of metal, the diameter of the friction roller is 1-1000mm, the wall thickness is 0.1-50mm, the surface aperture of the friction roller is 0.01-10mm, and the hole spacing is 0.01-10mm. The two friction rollers are arranged in parallel, and the friction rollers are narrow Slot width (note: the minimum distance between the two friction roller surfaces) is 0.01-5mm, one end of the two friction rollers is connected to the motor, and the motor speed is 10-1000r/min; the other end is connected to the vortex fan, and the pressure of the vortex fan is -0.5-0Mpa, so Both the motor and the vortex fan mentioned above are covered with insulating materials to avoid the interference of the spinning electric field.
所述金属棒位于两个摩擦辊之间狭缝的正下方，直径1-20mm，长度与摩擦辊长度相同。 The metal rod is located directly below the slit between the two friction rollers, has a diameter of 1-20 mm, and has the same length as the friction rollers.
所述导纱器位于两个摩擦辊的两端，高度与两个摩擦辊之间狭缝处于同一水平线。 The yarn guide is located at both ends of the two friction rollers, and its height is at the same level as the slit between the two friction rollers.
所述卷绕装置位于导纱器正下方，卷绕装置直径是20-30mm，长度80-100mm。 The winding device is located directly below the yarn guide, the diameter of the winding device is 20-30mm, and the length is 80-100mm.
所述喷丝装置的喷丝孔的轴线和正下方两个摩擦辊的狭缝相对应并相互平行。 The axes of the spinning holes of the spinning device correspond to the slits of the two friction rollers directly below and are parallel to each other.
所述喷丝装置与金属棒垂直间距1-50cm。 The vertical distance between the spinning device and the metal rod is 1-50 cm.
所述喷丝装置和金属棒分别与高压发生器的正极和负极相连接，所述高压发生器的电压3-50kV。 The spinning device and the metal rod are respectively connected to the positive pole and the negative pole of the high voltage generator, and the voltage of the high voltage generator is 3-50kV.
本发明所述的一种多股喷气摩擦静电纺成纱装置制备静电纺纳米纤维纱线的方法，它的步骤如下： A method for preparing electrospun nanofiber yarns by a multi-strand air-jet friction electrostatic spinning device according to the present invention, its steps are as follows:
（1）供液装置匀速定量地将纺丝溶液通过进液口输入溶液室； (1) The liquid supply device quantitatively feeds the spinning solution into the solution chamber through the liquid inlet at a constant speed;
（2）打开每个气室相对应的气泵，气泵压力从邻近溶液室开始由内至外依次递增； (2) Turn on the air pump corresponding to each air chamber, and the pressure of the air pump increases sequentially from the inside to the outside from the adjacent solution chamber;
（3）打开摩擦辊的控制电机，使两个摩擦辊同向转动，转速控制在10-1000r/min，且两个摩擦辊的转速比控制在0-20； (3) Turn on the control motor of the friction roller, so that the two friction rollers rotate in the same direction, the speed is controlled at 10-1000r/min, and the speed ratio of the two friction rollers is controlled at 0-20;
（4）打开摩擦辊的控制涡流风机，使涡流风机的压力控制在-0.5-0Mpa； (4) Turn on the control vortex fan of the friction roller, so that the pressure of the vortex fan is controlled at -0.5-0Mpa;
（5）打开高压发生器，电压控制在5-20kV，从喷丝孔挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维，因为多个气室喷出的气流其角度依次增加、气压依次增大，同时涡流风机抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维会定向凝聚在两个摩擦辊之间的狭缝中，形成纳米纤维束； (5) Turn on the high-voltage generator, and the voltage is controlled at 5-20kV. The liquid droplets extruded from the spinneret holes are drawn into nanofibers under the combined action of airflow force and electrostatic force, because the airflow ejected from multiple air chambers The angle increases sequentially, the air pressure increases sequentially, and at the same time, the suction of the vortex fan will form a strong negative pressure between the friction gaps, so these formed nanofibers will be oriented and condensed in the gap between the two friction rollers to form nanofiber bundles;
（6）步骤（5）集聚的纳米纤维束在两个同向转动的摩擦辊的作用下加捻，形成纳米纤维纱线； (6) The aggregated nanofiber bundles in step (5) are twisted under the action of two co-rotating friction rollers to form nanofiber yarns;
（7）步骤（6）得到的纳米纤维纱线通过预先放置在狭缝中的纱线引出经导纱器卷绕到卷绕装置上，通过控制两个摩擦辊的不同转速比获得不同捻度的纱线。 (7) The nanofiber yarn obtained in step (6) is drawn out from the yarn pre-placed in the slit and wound on the winding device through the yarn guide, and different twists are obtained by controlling the different speed ratios of the two friction rollers. yarn.
本发明所述的一种多股喷气摩擦静电纺成纱装置制备静电纺纳米纤维包芯纱的方法，它的步骤如下： A method for preparing electrospun nanofiber core-spun yarn by a multi-strand air-jet friction electrostatic spinning device according to the present invention, its steps are as follows:
（1）预先将一端卷绕辊的纱线从导纱器引出经过两个摩擦辊的狭缝卷绕到另一端的卷绕装置上； (1) The yarn of the winding roller at one end is drawn out from the yarn guide and wound on the winding device at the other end through the slits of the two friction rollers;
（2）供液装置匀速定量地将纺丝溶液通过进液口输入溶液室； (2) The liquid supply device feeds the spinning solution quantitatively into the solution chamber through the liquid inlet at a constant speed;
（3）打开每个气室相对应的气泵，气泵压力从邻近溶液室开始由内至外依次递增； (3) Turn on the air pump corresponding to each air chamber, and the pressure of the air pump increases sequentially from the inside to the outside from the adjacent solution chamber;
（4）打开摩擦辊的控制电机，使两个摩擦辊同向转动，转速控制在10-1000r/min，且两个摩擦辊的转速比控制在0-20； (4) Turn on the control motor of the friction roller, so that the two friction rollers rotate in the same direction, the speed is controlled at 10-1000r/min, and the speed ratio of the two friction rollers is controlled at 0-20;
（5）打开摩擦辊的控制涡流风机，使涡流风机的压力控制在-0.5-0Mpa； (5) Turn on the control vortex fan of the friction roller, so that the pressure of the vortex fan is controlled at -0.5-0Mpa;
（6）打开高压发生器，电压控制在5-20kV，从喷丝孔挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维，因为多个气室喷出的气流其角度依次增加、气压依次增大，同时涡流风机抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维定向凝聚在两个摩擦辊之间的狭缝中，包覆在预先放置的纱线的表面； (6) Turn on the high-voltage generator, and the voltage is controlled at 5-20kV. The liquid droplets extruded from the spinneret holes are drawn into nanofibers under the combined action of airflow force and electrostatic force, because the airflow ejected from multiple air chambers The angle increases sequentially, the air pressure increases sequentially, and at the same time, the suction of the vortex fan will form a strong negative pressure between the friction gaps, so these formed nanofibers are oriented and condensed in the gap between the two friction rollers, and covered in the pre-placed the surface of the yarn;
（7）步骤（6）包覆纳米纤维的纱线在两个同向转动的摩擦辊的作用下加捻，形成纳米纤维包芯纱； (7) In step (6), the nanofiber-coated yarn is twisted under the action of two friction rollers rotating in the same direction to form a nanofiber core-spun yarn;
（8）步骤（7）得到的纳米纤维包芯纱经导纱器卷绕到卷绕装置上，通过控制两个摩擦辊的不同转速比获得不同捻度的纳米纤维包芯。 (8) The nanofiber core-spun yarn obtained in step (7) is wound on the winding device through the yarn guide, and the nanofiber core-spun yarn with different twists is obtained by controlling the different rotational speed ratios of the two friction rollers.
本发明的有益效果是：本发明以新的视角集喷丝、集聚、加捻和卷绕于一体，可连续制备有捻的静电纺纳米纤维纱线。本发明设计一种无针多股喷气静电纺的喷丝方法为纳米纤维纺纱提供可集聚的批量纤维来源；同时提出利用阶梯流场和负压吸动耦合作用实现批量纳米纤维的定向集聚和连续成束；最后通过带有速度差的摩擦辊同向转动，对集聚的纳米纤维摩擦加捻，完成连续有捻的纳米纤维成纱。本发明的多股喷气摩擦静电纺成纱装置制备工艺简单、纳米纤维纱产量高，且适用于各种高聚物纺丝溶液，能够满足纳米纤维纱线规模化和连续化制备。同时可制备纳米纤维包芯纱，获得的纱线不仅具备传统纱线的力学性能及可加工型，而且具有功能性，提高传统纱线的附加值。 The beneficial effects of the invention are: the invention integrates spinning, gathering, twisting and winding from a new perspective, and can continuously prepare twisted electrospun nanofiber yarns. The present invention designs a needle-free multi-strand air-jet electrospinning spinning method to provide agglomerated batch fiber sources for nanofiber spinning; meanwhile, it proposes to use the step flow field and negative pressure suction-dynamic coupling to realize directional agglomeration and batch nanofibers Continuous bunching; finally, the friction rollers with speed difference rotate in the same direction to rub and twist the accumulated nanofibers to complete the continuous twisted nanofibers into yarn. The multi-strand air-jet friction electrostatic spinning device of the present invention has simple preparation process, high yield of nanofiber yarn, is suitable for various high polymer spinning solutions, and can meet the large-scale and continuous preparation of nanofiber yarn. At the same time, nanofiber core-spun yarns can be prepared, and the obtained yarns not only have the mechanical properties and processability of traditional yarns, but also have functionality, increasing the added value of traditional yarns.
附图说明 Description of drawings
图1为多股喷气摩擦静电纺成纱装置图； Figure 1 is a multi-strand air-jet friction electrostatic spinning device diagram;
图2为为喷丝装置结构示意图； Fig. 2 is a schematic diagram of the structure of the spinning device;
图3为喷丝装置底端平面图； Fig. 3 is the bottom plan view of spinning device;
图4滚筒结构示意图； Figure 4 Schematic diagram of the drum structure;
图5多股喷气摩擦静电纺纳米纤维成纱过程示意图； Fig. 5 Schematic diagram of multi-strand air-jet friction electrospinning nanofiber yarn forming process;
图6多股喷气摩擦静电纺纳米纤维包芯纱成纱过程示意图。 Fig. 6 Schematic diagram of the yarn forming process of multi-strand air-jet friction electrospinning nanofiber core-spun yarn.
其中：1-高压发生器；2-喷丝装置；3-输液管；4-供液装置；5-摩擦辊；6-齿轮；7-导纱器；8-卷绕装置；9-电机；10-金属棒；11-涡流风机；12-抽气管；13-纳米纤维；14-纳米纤维纱线；15-芯纱；16-纳米纤维包芯纱。 Among them: 1-high voltage generator; 2-spinning device; 3-infusion tube; 4-liquid supply device; 5-friction roller; 6-gear; 7-yarn guide; 8-winding device; 9-motor; 10-metal rod; 11-vortex fan; 12-exhaust pipe; 13-nanofiber; 14-nanofiber yarn; 15-core yarn; 16-nanofiber core-spun yarn.
具体实施方式 detailed description
下面结合具体实施例，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。 Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.
实施例1Example 1
参照附图1、附图2、附图3、附图4和附图5，一种静电纺纳米纤维的多股喷气摩擦成纱装置，它包括高压发生器1、喷丝装置2、供液装置4、摩擦辊5、金属棒10、导纱器7、卷绕装置8、电机9和涡轮风机11。 With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, a kind of multi-strand air-jet friction yarn forming device of electrospinning nanofiber, it comprises high voltage generator 1, spinneret 2, liquid supply Device 4, friction roller 5, metal rod 10, yarn guide 7, winding device 8, motor 9 and turbo blower 11.
喷丝装置2通过输液管3与供液装置4相连接。喷丝装置正下方设有两个平行排列的摩擦辊5，两个摩擦辊5的一端通过齿轮6与电机9相连，另一端通过抽气管12与涡流风机11相连。摩擦辊5两端分别设有导纱器7和卷绕装置8，摩擦辊5下方装有金属棒10。高压发生器1正、负极分别与喷丝装置2和金属棒10相连接。所述摩擦辊5、金属棒10和导纱器7均安装在基座上。 The spinning device 2 is connected with the liquid supply device 4 through the infusion tube 3 . Two friction rollers 5 arranged in parallel are arranged directly under the spinning device, one end of the two friction rollers 5 is connected with the motor 9 through the gear 6 , and the other end is connected with the vortex fan 11 through the suction pipe 12 . Both ends of the friction roller 5 are respectively provided with a yarn guide 7 and a winding device 8 , and a metal rod 10 is installed under the friction roller 5 . The positive and negative poles of the high voltage generator 1 are connected to the spinning device 2 and the metal rod 10 respectively. The friction roller 5, the metal rod 10 and the yarn guide 7 are all installed on the base.
喷丝装置2由溶液室14和沿溶液室两侧对称排列的1组气室16构成。溶液室下方设有一排沿同一轴线排列的喷丝孔18。喷丝孔直径0.5mm，间距3mm，数量50个。2个气室分别通过进气管15与气泵相连接，每个气室16下方设有一个气道17，气道均为狭长型斜槽，气道在喷丝孔18两侧对称排列，气道17与水平面夹角60°。 The spinning device 2 is composed of a solution chamber 14 and a group of air chambers 16 arranged symmetrically along both sides of the solution chamber. A row of spinneret holes 18 arranged along the same axis is arranged below the solution chamber. The diameter of the spinneret hole is 0.5 mm, the pitch is 3 mm, and the number is 50. The two air chambers are respectively connected to the air pump through the air intake pipe 15. An air passage 17 is provided under each air chamber 16. The air passages are all narrow and long inclined grooves. The air passages are symmetrically arranged on both sides of the spinneret holes 18. The air passages 17 has an angle of 60° with the horizontal plane.
摩擦辊5为表面带孔的圆管。两个摩擦辊5均采用金属材质。摩擦辊直径150mm，壁厚0.1mm。摩擦辊表面孔径1mm，孔间距2mm。两个摩擦辊5平行排列，摩擦辊之间狭缝宽度0.5mm。两个摩擦辊5一端与电机9相连，电机转速分别是100和300r/min；另一端与涡流风机11相连，涡流风机压力-0.3Mpa。电机9与涡流风机11均用绝缘材料包覆，避免纺丝电场的干扰。 The rubbing roller 5 is a circular tube with holes on the surface. Both friction rollers 5 are made of metal. The friction roller has a diameter of 150mm and a wall thickness of 0.1mm. The surface aperture of the friction roller is 1mm, and the hole spacing is 2mm. Two rubbing rollers 5 are arranged in parallel, and the slit width between the rubbing rollers is 0.5 mm. One end of the two friction rollers 5 is connected with the motor 9, and the motor speed is 100 and 300r/min respectively; the other end is connected with the vortex fan 11, and the pressure of the vortex fan is -0.3Mpa. Both the motor 9 and the vortex blower 11 are covered with insulating materials to avoid the interference of the spinning electric field.
金属棒10位于两个摩擦辊5之间狭缝的正下方，直径5mm，长度与摩擦辊长度相同。 The metal rod 10 is located directly below the slit between the two friction rollers 5, with a diameter of 5mm and the same length as the friction rollers.
导纱器7位于两个摩擦辊5的两端，高度与两个摩擦辊5之间狭缝处于同一水平线。 The yarn guide 7 is located at the two ends of the two friction rollers 5, and the height is at the same level as the slit between the two friction rollers 5.
卷绕装置8位于导纱器7正下方，卷绕装置直径是25mm，长度100mm。 The winding device 8 is located directly below the yarn guide 7, the diameter of the winding device is 25mm, and the length is 100mm.
喷丝装置2的喷丝孔18的轴线和正下方两个摩擦辊5的狭缝相对应并相互平行。 The axes of the spinneret holes 18 of the spinneret 2 correspond to the slits of the two friction rollers 5 directly below and are parallel to each other.
喷丝装置2与金属棒10垂直间距15cm。 The vertical distance between the spinning device 2 and the metal rod 10 is 15 cm.
喷丝装置2和金属棒10分别与高压发生器1的正极和负极相连接，高压发生器1的电压15kV。 The spinning device 2 and the metal rod 10 are respectively connected to the positive pole and the negative pole of the high voltage generator 1, and the voltage of the high voltage generator 1 is 15kV.
一种利用实施例1的静电纺纳米纤维多股喷气摩擦成纱装置制备聚丙烯腈（PAN）纳米纤维纱线的方法，包括以下步骤： A method for preparing polyacrylonitrile (PAN) nanofiber yarns using the electrospinning nanofiber multi-strand air-jet friction yarn forming device of Example 1, comprising the following steps:
（1）供液装置4匀速定量地将PAN纺丝溶液通过进液口13输入溶液室14； (1) The liquid supply device 4 uniformly and quantitatively feeds the PAN spinning solution into the solution chamber 14 through the liquid inlet 13;
（2）打开气室16相对应的气泵，气泵压力调至0.5Mpa； (2) Turn on the air pump corresponding to the air chamber 16, and adjust the air pump pressure to 0.5Mpa;
（3）打开摩擦辊5的控制电机9，使两个摩擦辊5同向转动，转速分别控制在100和300r/min； (3) Turn on the control motor 9 of the friction roller 5, so that the two friction rollers 5 rotate in the same direction, and the speed is controlled at 100 and 300r/min respectively;
（4）打开摩擦辊5的控制涡流风机11，使涡流风机的压力控制在-0.3Mpa； (4) Turn on the control vortex fan 11 of the friction roller 5, so that the pressure of the vortex fan is controlled at -0.3Mpa;
（5）打开高压发生器1，电压控制在15kV。从喷丝孔18挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维13，因为对称的两个气室16喷出的气流作用，同时涡流风机11抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维会定向凝聚在两个摩擦辊5之间的狭缝中，形成纳米纤维束； (5) Turn on the high voltage generator 1 and control the voltage at 15kV. The droplets extruded from the spinneret hole 18 are drawn into nanofibers 13 under the joint action of airflow force and electrostatic force, because the airflow ejected from the symmetrical two air chambers 16, and the suction of the vortex fan 11 will be in friction A strong negative pressure is formed between the gaps, so these formed nanofibers will be oriented and condensed in the gap between the two friction rollers 5 to form nanofiber bundles;
（6）步骤（5）集聚的纳米纤维束在两个同向转动的摩擦辊5的作用下加捻，形成纳米纤维纱线14； (6) The nanofiber bundles gathered in step (5) are twisted under the action of two friction rollers 5 rotating in the same direction to form nanofiber yarns 14 ;
（7）步骤（6）得到的纳米纤维纱线14通过预先放置在狭缝中的纱线引出经导纱器7卷绕到卷绕装置8上，通过控制两个摩擦辊的不同转速比获得不同捻度的纱线。 (7) The nanofiber yarn 14 obtained in step (6) is drawn out from the yarn pre-placed in the slit and wound on the winding device 8 through the yarn guide 7, and obtained by controlling the different speed ratios of the two friction rollers Yarns of different twists.
实施例2Example 2
参照附图1、附图2、附图3、附图4和附图5，一种静电纺纳米纤维的多股喷气摩擦成纱装置，它包括高压发生器1，喷丝装置2、供液装置4、摩擦辊5、金属棒10、导纱器7、卷绕装置8、电机9和涡轮风机11。 With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, a kind of multi-strand air-jet friction yarn forming device of electrospinning nanofiber, it comprises high voltage generator 1, spinneret 2, liquid supply Device 4, friction roller 5, metal rod 10, yarn guide 7, winding device 8, motor 9 and turbo blower 11.
喷丝装置2通过输液管3与供液装置4相连接。喷丝装置正下方设有两个平行排列的摩擦辊5，两个摩擦辊5的一端通过齿轮6与电机9相连，另一端通过抽气管12与涡流风机11相连。摩擦辊5两端分别设有导纱器7和卷绕装置8，摩擦辊5下方装有金属棒10。高压发生器1正、负极分别与喷丝装置2和金属棒10相连接。所述摩擦辊5、金属棒10和导纱器7均安装在基座上。 The spinning device 2 is connected with the liquid supply device 4 through the infusion tube 3 . Two friction rollers 5 arranged in parallel are arranged directly under the spinning device, one end of the two friction rollers 5 is connected with the motor 9 through the gear 6 , and the other end is connected with the vortex fan 11 through the suction pipe 12 . Both ends of the friction roller 5 are respectively provided with a yarn guide 7 and a winding device 8 , and a metal rod 10 is installed under the friction roller 5 . The positive and negative poles of the high voltage generator 1 are connected to the spinning device 2 and the metal rod 10 respectively. The friction roller 5, the metal rod 10 and the yarn guide 7 are all installed on the base.
喷丝装置2由溶液室14和沿溶液室两侧对称排列的4组气室16构成。所述溶液室下方设有一排沿同一轴线排列的喷丝孔18。喷丝孔直径0.5mm，间距3mm，数量50个。4组气室分别通过进气管15与气泵相连接，每个气室16下方设有角度不同的气道17，气道均为狭长型斜槽，气道在喷丝孔18两侧对称排列，气道17与水平面夹角从邻近喷丝孔18开始由内至外逐步增加，角度依次是81.99°、79.81°、76.05°、60°，气道数量8个。 The spinning device 2 is composed of a solution chamber 14 and four sets of air chambers 16 arranged symmetrically along both sides of the solution chamber. A row of spinneret holes 18 arranged along the same axis is arranged below the solution chamber. The diameter of the spinneret hole is 0.5 mm, the pitch is 3 mm, and the number is 50. The four groups of air chambers are respectively connected to the air pump through the air intake pipe 15, and the air passages 17 with different angles are arranged under each air chamber 16, and the air passages are all narrow and long inclined grooves, and the air passages are symmetrically arranged on both sides of the spinneret hole 18, The angle between the air channel 17 and the horizontal plane gradually increases from the inside to the outside from the adjacent spinneret hole 18, the angles are 81.99°, 79.81°, 76.05°, 60°, and there are 8 air channels.
摩擦辊5为表面带孔的圆管。两个摩擦辊5均采用金属材质。摩擦辊直径150mm，壁厚0.1mm。摩擦辊表面孔径1mm，孔间距2mm。两个摩擦辊5平行排列，摩擦辊之间狭缝宽度0.5mm。两个摩擦辊5一端与电机9相连，电机转速分别是300和500r/min；另一端与涡流风机11相连，涡流风机压力-0.3Mpa。电机9与涡流风机11均用绝缘材料包覆，避免纺丝电场的干扰。 The rubbing roller 5 is a circular tube with holes on the surface. Both friction rollers 5 are made of metal. The friction roller has a diameter of 150mm and a wall thickness of 0.1mm. The surface aperture of the friction roller is 1mm, and the hole spacing is 2mm. Two rubbing rollers 5 are arranged in parallel, and the slit width between the rubbing rollers is 0.5 mm. One end of the two friction rollers 5 is connected with the motor 9, and the speed of the motor is 300 and 500r/min respectively; the other end is connected with the vortex fan 11, and the pressure of the vortex fan is -0.3Mpa. Both the motor 9 and the vortex blower 11 are covered with insulating materials to avoid the interference of the spinning electric field.
金属棒10位于两个摩擦辊5之间狭缝的正下方，直径5mm，长度与摩擦辊长度相同。 The metal rod 10 is located directly below the slit between the two friction rollers 5, with a diameter of 5mm and the same length as the friction rollers.
导纱器7位于两个摩擦辊5的两端，高度与两个摩擦辊5之间狭缝处于同一水平线。 The yarn guide 7 is located at the two ends of the two friction rollers 5, and the height is at the same level as the slit between the two friction rollers 5.
卷绕装置8位于导纱器7正下方，卷绕装置直径是25mm，长度100mm。 The winding device 8 is located directly below the yarn guide 7, the diameter of the winding device is 25mm, and the length is 100mm.
喷丝装置2的喷丝孔18的轴线和正下方两个摩擦辊5的狭缝相对应并相互平行。 The axes of the spinneret holes 18 of the spinneret 2 correspond to the slits of the two friction rollers 5 directly below and are parallel to each other.
喷丝装置2与金属棒10垂直间距15cm。 The vertical distance between the spinning device 2 and the metal rod 10 is 15 cm.
喷丝装置2和金属棒10分别与高压发生器1的正极和负极相连接，高压发生器1的电压10kV。 The spinning device 2 and the metal rod 10 are respectively connected to the positive pole and the negative pole of the high voltage generator 1, and the voltage of the high voltage generator 1 is 10kV.
一种利用实施例2的静电纺纳米纤维多股喷气摩擦成纱装置制备聚乳酸（PLA）纳米纤维纱线的方法，包括以下步骤： A method for preparing polylactic acid (PLA) nanofiber yarns using the electrospinning nanofiber multi-strand air-jet friction yarn forming device of Example 2, comprising the following steps:
（1）供液装置4匀速定量地将PLA纺丝溶液通过进液口13输入溶液室14； (1) The liquid supply device 4 uniformly and quantitatively inputs the PLA spinning solution into the solution chamber 14 through the liquid inlet 13;
（2）打开每个气室16相对应的气泵，气泵压力从邻近喷丝孔开始从内至外依次调为0.3、0.4、0.5和0.6Mpa； (2) Turn on the air pump corresponding to each air chamber 16, and adjust the air pump pressure to 0.3, 0.4, 0.5 and 0.6Mpa from the inside to the outside of the adjacent spinneret hole;
（3）打开摩擦辊5的控制电机9，使两个摩擦辊5同向转动，转速分别控制在300和500r/min； (3) Turn on the control motor 9 of the friction roller 5, so that the two friction rollers 5 rotate in the same direction, and the speed is controlled at 300 and 500r/min respectively;
（4）打开摩擦辊5的控制涡流风机11，使涡流风机的压力控制在-0.3Mpa； (4) Turn on the control vortex fan 11 of the friction roller 5, so that the pressure of the vortex fan is controlled at -0.3Mpa;
（5）打开高压发生器（1），电压控制在10kV。从喷丝孔（18）挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维13，因为4组气室喷出气流角度依次增加、气压依次增大，同时涡流风机11抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维会定向凝聚在两个摩擦辊5之间的狭缝中，形成纳米纤维束； (5) Turn on the high voltage generator (1), and control the voltage at 10kV. The droplets extruded from the spinneret holes (18) are drawn into nanofibers 13 under the joint action of airflow force and electrostatic force, because the angles of airflow and air pressure from the four groups of air chambers increase sequentially, and at the same time, the vortex fan 11 Air extraction will form a strong negative pressure between the friction gaps, so these formed nanofibers will be oriented and condensed in the gap between the two friction rollers 5 to form nanofiber bundles;
（6）步骤（5）集聚的纳米纤维束在两个同向转动的摩擦辊5的作用下加捻，形成纳米纤维纱线14； (6) The nanofiber bundles gathered in step (5) are twisted under the action of two friction rollers 5 rotating in the same direction to form nanofiber yarns 14 ;
（7）步骤（6）得到的纳米纤维纱线14通过预先放置在狭缝中的纱线引出经导纱器7卷绕到卷绕装置8上，通过控制两个摩擦辊的不同转速比获得不同捻度的纱线。 (7) The nanofiber yarn 14 obtained in step (6) is drawn out from the yarn pre-placed in the slit and wound on the winding device 8 through the yarn guide 7, and obtained by controlling the different speed ratios of the two friction rollers Yarns of different twists.
实施例3Example 3
参照附图1、附图2、附图3、附图4和附图6，一种静电纺纳米纤维的多股喷气摩擦成纱装置，它包括高压发生器1、喷丝装置2、供液装置4、摩擦辊5、金属棒10、导纱器7、卷绕装置8、电机9和涡轮风机11。 With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 6, a kind of multi-strand air-jet friction yarn forming device of electrospinning nanofiber, it comprises high voltage generator 1, spinneret 2, liquid supply Device 4, friction roller 5, metal rod 10, yarn guide 7, winding device 8, motor 9 and turbo blower 11.
喷丝装置2通过输液管3与供液装置4相连接。喷丝装置正下方设有两个平行排列的摩擦辊5，两个摩擦辊5的一端通过齿轮6与电机9相连，另一端通过抽气管12与涡流风机11相连。摩擦辊5两端分别设有导纱器7和卷绕装置8，摩擦辊5下方装有金属棒10。高压发生器1正、负极分别与喷丝装置2和金属棒10相连接。所述摩擦辊5、金属棒10和导纱器7均安装在基座上。 The spinning device 2 is connected with the liquid supply device 4 through the infusion tube 3 . Two friction rollers 5 arranged in parallel are arranged directly under the spinning device, one end of the two friction rollers 5 is connected with the motor 9 through the gear 6 , and the other end is connected with the vortex fan 11 through the suction pipe 12 . Both ends of the friction roller 5 are respectively provided with a yarn guide 7 and a winding device 8 , and a metal rod 10 is installed under the friction roller 5 . The positive and negative poles of the high voltage generator 1 are connected to the spinning device 2 and the metal rod 10 respectively. The friction roller 5, the metal rod 10 and the yarn guide 7 are all installed on the base.
喷丝装置2由溶液室14和沿溶液室两侧对称排列的1组气室16构成。溶液室下方设有一排沿同一轴线排列的喷丝孔18。喷丝孔直径0.5mm，间距3mm，数量50个。2个气室分别通过进气管15与气泵相连接，每个气室16下方设有一个气道17，气道均为狭长型斜槽，气道在喷丝孔18两侧对称排列，气道17与水平面夹角60°。 The spinning device 2 is composed of a solution chamber 14 and a group of air chambers 16 arranged symmetrically along both sides of the solution chamber. A row of spinneret holes 18 arranged along the same axis is arranged below the solution chamber. The diameter of the spinneret hole is 0.5 mm, the pitch is 3 mm, and the number is 50. The two air chambers are respectively connected to the air pump through the air intake pipe 15. An air passage 17 is provided under each air chamber 16. The air passages are all narrow and long inclined grooves. The air passages are symmetrically arranged on both sides of the spinneret holes 18. The air passages 17 has an angle of 60° with the horizontal plane.
摩擦辊5为表面带孔的圆管。两个摩擦辊5均采用金属材质。摩擦辊直径150mm，壁厚0.1mm。摩擦辊表面孔径1mm，孔间距2mm。两个摩擦辊5平行排列，摩擦辊之间狭缝宽度0.5mm。两个摩擦辊5一端与电机9相连，电机转速分别是100和300r/min；另一端与涡流风机11相连，涡流风机压力-0.3Mpa。电机9与涡流风机11均用绝缘材料包覆，避免纺丝电场的干扰。 The rubbing roller 5 is a circular tube with holes on the surface. Both friction rollers 5 are made of metal. The friction roller has a diameter of 150mm and a wall thickness of 0.1mm. The surface aperture of the friction roller is 1mm, and the hole spacing is 2mm. Two rubbing rollers 5 are arranged in parallel, and the slit width between the rubbing rollers is 0.5 mm. One end of the two friction rollers 5 is connected with the motor 9, and the motor speed is 100 and 300r/min respectively; the other end is connected with the vortex fan 11, and the pressure of the vortex fan is -0.3Mpa. Both the motor 9 and the vortex blower 11 are covered with insulating materials to avoid the interference of the spinning electric field.
金属棒10位于两个摩擦辊5之间狭缝的正下方，直径5mm，长度与摩擦辊长度相同。 The metal rod 10 is located directly below the slit between the two friction rollers 5, with a diameter of 5mm and the same length as the friction rollers.
导纱器7位于两个摩擦辊5的两端，高度与两个摩擦辊5之间狭缝处于同一水平线。 The yarn guide 7 is located at the two ends of the two friction rollers 5, and the height is at the same level as the slit between the two friction rollers 5.
卷绕装置8位于导纱器7正下方，卷绕装置直径是25mm，长度100mm。 The winding device 8 is located directly below the yarn guide 7, the diameter of the winding device is 25mm, and the length is 100mm.
喷丝装置2的喷丝孔18的轴线和正下方两个摩擦辊5的狭缝相对应并相互平行。 The axes of the spinneret holes 18 of the spinneret 2 correspond to the slits of the two friction rollers 5 directly below and are parallel to each other.
喷丝装置2与金属棒10垂直间距15cm。 The vertical distance between the spinning device 2 and the metal rod 10 is 15 cm.
喷丝装置2和金属棒10分别与高压发生器1的正极和负极相连接，高压发生器1的电压15kV。 The spinning device 2 and the metal rod 10 are respectively connected to the positive pole and the negative pole of the high voltage generator 1, and the voltage of the high voltage generator 1 is 15kV.
一种利用实施例3的静电纺纳米纤维多股喷气摩擦成纱装置制备聚丙烯腈（PAN）纳米纤维包芯纱的方法，包括以下步骤： A method for preparing polyacrylonitrile (PAN) nanofiber core-spun yarns using the multi-strand air-jet friction yarn forming device of electrospinning nanofibers in Example 3, comprising the following steps:
（1）预先将一端卷绕辊的黏胶芯纱15从导纱器7引出经过两个摩擦辊5的狭缝卷绕到另一端的卷绕装置8上； (1) Lead the viscose core yarn 15 of the winding roller at one end from the yarn guide 7 to the winding device 8 at the other end through the slits of the two friction rollers 5;
（2）供液装置4匀速定量地将PAN纺丝溶液通过进液口13输入溶液室14； (2) The liquid supply device 4 uniformly and quantitatively inputs the PAN spinning solution into the solution chamber 14 through the liquid inlet 13;
（3）打开气室16相对应的气泵，气泵压力调至0.5Mpa； (3) Turn on the air pump corresponding to the air chamber 16, and adjust the air pump pressure to 0.5Mpa;
（4）打开摩擦辊5的控制电机9，使两个摩擦辊5同向转动，转速分别控制在100和300r/min； (4) Turn on the control motor 9 of the friction roller 5 to make the two friction rollers 5 rotate in the same direction, and the speeds are controlled at 100 and 300r/min respectively;
（5）打开摩擦辊5的控制涡流风机11，使涡流风机的压力控制在-0.3Mpa； (5) Turn on the control vortex fan 11 of the friction roller 5, so that the pressure of the vortex fan is controlled at -0.3Mpa;
（6）打开高压发生器1，电压控制在15kV。从喷丝孔18挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维13。因为对称的两个气室16喷出的气流作用，同时涡流风机11抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维定向凝聚在两个摩擦辊5之间的狭缝中，包覆在预先放置的纱线的表面； (6) Turn on the high voltage generator 1 and control the voltage at 15kV. The droplets extruded from the spinneret holes 18 are drawn into nanofibers 13 under the joint action of air force and electrostatic force. Because of the airflow ejected from the two symmetrical air chambers 16, and the suction of the vortex fan 11 will form a strong negative pressure between the friction gaps, so these formed nanofibers are oriented and condensed in the gap between the two friction rollers 5 , coated on the surface of the pre-placed yarn;
（7）步骤（6）包覆纳米纤维的纱线在两个同向转动的摩擦辊的作用下加捻，形成纳米纤维包芯纱16； (7) In step (6), the nanofiber-coated yarn is twisted under the action of two friction rollers rotating in the same direction to form the nanofiber core-spun yarn 16;
（8）步骤（7）得到的纳米纤维包芯纱经导纱器7卷绕到卷绕装置8上，通过控制两个摩擦辊的不同转速比获得不同捻度的纳米纤维包芯。 (8) The nanofiber core-spun yarn obtained in step (7) is wound on the winding device 8 through the yarn guide 7, and the nanofiber core-spun yarn with different twists is obtained by controlling the different rotational speed ratios of the two friction rollers.
实施例4Example 4
参照附图1、附图2、附图3、附图4和附图6，一种静电纺纳米纤维的多股喷气摩擦成纱装置，它包括高压发生器1、喷丝装置2、供液装置4、摩擦辊5、金属棒10、导纱器7、卷绕装置8、电机9和涡轮风机11。 With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4 and accompanying drawing 6, a kind of multi-strand air-jet friction yarn forming device of electrospinning nanofiber, it comprises high voltage generator 1, spinneret 2, liquid supply Device 4, friction roller 5, metal rod 10, yarn guide 7, winding device 8, motor 9 and turbo blower 11.
喷丝装置2通过输液管3与供液装置4相连接。喷丝装置正下方设有两个平行排列的摩擦辊5，两个摩擦辊5的一端通过齿轮6与电机9相连，另一端通过抽气管12与涡流风机11相连。摩擦辊5两端分别设有导纱器7和卷绕装置8，摩擦辊5下方装有金属棒10。高压发生器1正、负极分别与喷丝装置2和金属棒10相连接。所述摩擦辊5、金属棒10和导纱器7均安装在基座上。 The spinning device 2 is connected with the liquid supply device 4 through the infusion tube 3 . Two friction rollers 5 arranged in parallel are arranged directly under the spinning device, one end of the two friction rollers 5 is connected with the motor 9 through the gear 6 , and the other end is connected with the vortex fan 11 through the suction pipe 12 . Both ends of the friction roller 5 are respectively provided with a yarn guide 7 and a winding device 8 , and a metal rod 10 is installed under the friction roller 5 . The positive and negative poles of the high voltage generator 1 are connected to the spinning device 2 and the metal rod 10 respectively. The friction roller 5, the metal rod 10 and the yarn guide 7 are all installed on the base.
喷丝装置2由溶液室14和沿溶液室两侧对称排列的4组气室16构成。所述溶液室下方设有一排沿同一轴线排列的喷丝孔18。喷丝孔直径0.5mm，间距3mm，数量50个。4组气室分别通过进气管15与气泵相连接，每个气室16下方设有角度不同的气道17，气道均为狭长型斜槽，气道在喷丝孔18两侧对称排列，气道17与水平面夹角从邻近喷丝孔18开始由内至外逐步增加，角度依次是81.99°、79.81°、76.05°、60°，气道数量8个。 The spinning device 2 is composed of a solution chamber 14 and four sets of air chambers 16 arranged symmetrically along both sides of the solution chamber. A row of spinneret holes 18 arranged along the same axis is arranged below the solution chamber. The diameter of the spinneret hole is 0.5 mm, the pitch is 3 mm, and the number is 50. The four groups of air chambers are respectively connected to the air pump through the air intake pipe 15, and the air passages 17 with different angles are arranged under each air chamber 16, and the air passages are all narrow and long inclined grooves, and the air passages are symmetrically arranged on both sides of the spinneret hole 18, The angle between the air channel 17 and the horizontal plane gradually increases from the inside to the outside from the adjacent spinneret hole 18, the angles are 81.99°, 79.81°, 76.05°, 60°, and there are 8 air channels.
摩擦辊5为表面带孔的圆管。两个摩擦辊5均采用金属材质。摩擦辊直径150mm，壁厚0.1mm。摩擦辊表面孔径1mm，孔间距2mm。两个摩擦辊5平行排列，摩擦辊之间狭缝宽度0.5mm。两个摩擦辊5一端与电机9相连，电机转速分别是300和500r/min；另一端与涡流风机11相连，涡流风机压力-0.3Mpa。电机9与涡流风机11均用绝缘材料包覆，避免纺丝电场的干扰。 The rubbing roller 5 is a circular tube with holes on the surface. Both friction rollers 5 are made of metal. The friction roller has a diameter of 150mm and a wall thickness of 0.1mm. The surface aperture of the friction roller is 1mm, and the hole spacing is 2mm. Two rubbing rollers 5 are arranged in parallel, and the slit width between the rubbing rollers is 0.5mm. One end of the two friction rollers 5 is connected with the motor 9, and the speed of the motor is 300 and 500r/min respectively; the other end is connected with the vortex fan 11, and the pressure of the vortex fan is -0.3Mpa. Both the motor 9 and the vortex blower 11 are covered with insulating materials to avoid the interference of the spinning electric field.
金属棒10位于两个摩擦辊5之间狭缝的正下方，直径5mm，长度与摩擦辊长度相同。 The metal rod 10 is located directly below the slit between the two friction rollers 5, with a diameter of 5mm and the same length as the friction rollers.
导纱器7位于两个摩擦辊5的两端，高度与两个摩擦辊5之间狭缝处于同一水平线。 The yarn guide 7 is located at the two ends of the two friction rollers 5, and the height is at the same level as the slit between the two friction rollers 5.
卷绕装置8位于导纱器7正下方，卷绕装置直径是25mm，长度100mm。 The winding device 8 is located directly below the yarn guide 7, the diameter of the winding device is 25mm, and the length is 100mm.
喷丝装置2的喷丝孔18的轴线和正下方两个摩擦辊5的狭缝相对应并相互平行。 The axes of the spinneret holes 18 of the spinneret 2 correspond to the slits of the two friction rollers 5 directly below and are parallel to each other.
喷丝装置2与金属棒10垂直间距15cm。 The vertical distance between the spinning device 2 and the metal rod 10 is 15 cm.
喷丝装置2和金属棒10分别与高压发生器1的正极和负极相连接，高压发生器1的电压10kV。 The spinning device 2 and the metal rod 10 are respectively connected to the positive pole and the negative pole of the high voltage generator 1, and the voltage of the high voltage generator 1 is 10kV.
一种利用实施例4的静电纺纳米纤维多股喷气摩擦成纱装置制备聚偏氟乙烯（PVDF）纳米纤维包芯纱的方法，包括以下步骤： A method for preparing polyvinylidene fluoride (PVDF) nanofiber core-spun yarn by using the electrospinning nanofiber multi-strand air-jet friction yarn forming device of embodiment 4, comprising the following steps:
（1）预先将一端卷绕辊的黏胶芯纱15从导纱器7引出经过两个摩擦辊5的狭缝卷绕到另一端的卷绕装置8上； (1) Lead the viscose core yarn 15 of the winding roller at one end from the yarn guide 7 to the winding device 8 at the other end through the slits of the two friction rollers 5;
（2）供液装置4匀速定量地将PVDF纺丝溶液通过进液口13输入溶液室14； (2) The liquid supply device 4 uniformly and quantitatively inputs the PVDF spinning solution into the solution chamber 14 through the liquid inlet 13;
（3）打开每个气室16相对应的气泵，气泵压力从邻近喷丝孔开始从内至外依次调为0.3、0.4、0.5和0.6Mpa； (3) Turn on the air pump corresponding to each air chamber 16, and adjust the air pump pressure to 0.3, 0.4, 0.5 and 0.6Mpa from the inside to the outside of the adjacent spinneret hole;
（4）打开摩擦辊5的控制电机9，使两个摩擦辊5同向转动，转速分别控制在300和500r/min； (4) Turn on the control motor 9 of the friction roller 5, so that the two friction rollers 5 rotate in the same direction, and the speed is controlled at 300 and 500r/min respectively;
（5）打开摩擦辊5的控制涡流风机11，使涡流风机的压力控制在-0.3Mpa； (5) Turn on the control vortex fan 11 of the friction roller 5, so that the pressure of the vortex fan is controlled at -0.3Mpa;
（6）打开高压发生器1，电压控制在10kV。从喷丝孔18挤出的液滴在气流力和静电力的共同作用下牵伸成纳米纤维13。因为4组气室喷出气流角度依次增加、气压依次增大，同时涡流风机11抽气会在摩擦缝隙间形成强大负压，因此这些形成的纳米纤维会定向凝聚在两个摩擦辊5之间的狭缝中，形成纳米纤维束； (6) Turn on the high voltage generator 1 and control the voltage at 10kV. The droplets extruded from the spinneret holes 18 are drawn into nanofibers 13 under the joint action of air force and electrostatic force. Because the airflow angles and air pressures of the four groups of air chambers increase sequentially, and at the same time, the suction of the vortex fan 11 will form a strong negative pressure between the friction gaps, so these formed nanofibers will be oriented and condensed between the two friction rollers 5 In the slit, nanofiber bundles are formed;
（7）步骤（6）集聚的纳米纤维束在两个同向转动的摩擦辊5的作用下加捻，形成纳米纤维纱线（14）； (7) The nanofiber bundle gathered in step (6) is twisted under the action of two friction rollers 5 rotating in the same direction to form a nanofiber yarn (14);
（8）步骤（7）得到的纳米纤维纱线14通过预先放置在狭缝中的纱线引出经导纱器7卷绕到卷绕装置8上。通过控制两个摩擦辊的不同转速比获得不同捻度的纱线。 (8) The nanofiber yarn 14 obtained in step (7) is drawn out from the yarn pre-placed in the slit and wound onto the winding device 8 through the yarn guide 7 . Yarns with different twists are obtained by controlling the different rotational speed ratios of the two friction rollers.
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Effective date of registration: 20211201 Address after: 451162 Sino German Industrial Park 21-3, intersection of S102 and Nuanquan Road, Xuedian Town, Xinzheng City, Zhengzhou City, Henan Province Patentee after: Henan medium fiber new material technology Co.,Ltd. Address before: 451191 No. 1 Huaihe Road, Shuang Hu Economic and Technological Development Zone, Xinzheng, Zhengzhou, Henan Patentee before: ZHONGYUAN University OF TECHNOLOGY |