385results about How to "Improve spinning efficiency" patented technology

The present invention is characterized by that on the spinning machine it utilizes addition of a yarn tension control device and simple renovation of guide wheel to spin the invented core-spun composition yarn whose yarn is covered with staple fiber, and its covering rate is high. Said composite core-covered yarn not only has the appearance style, hand property, fluffy property and other advantages of staple fibre, but also possesses the strength and elongation, conformal property and drapping property, etc. of yarn.

The invention discloses a device and a method for preparing polysulfonamide nanometer fiber nets by means of airflow-electrostatic combination. The device comprises a liquid storage tank, an air chamber, an electrostatic generator and a receiving device, a plurality of spinnerets are arranged at the bottom of the liquid storage tank, the air chamber is arranged outside the liquid storage tank, air outlets in the number equal to that of the spinnerets at the bottom of the liquid storage tank are arranged at the bottom of the air chamber, the spinnerets are arranged inside the air outlets, an electrode with multiple pins are led from the positive electrode of the electrostatic generator to be connected with the spinnerets, and a lead is led from the negative electrode of the electrostatic generator to be connected with the receiving device. The method includes steps of combining the airflow method and the electrostatic spinning method effectively to prepare the polysulfonamide nanometer fiber nets. By the device and the method for preparing the polysulfonamide nanometer fiber nets, the specific surface area of the polysulfonamide nanometer fibers is enlarged greatly, the problem of blockage of existing electrostatic spinning needles due to inflow of the airflow is alleviated greatly, and spinning efficiency is improved. Besides, nanometer fibers can be prepared at the normal temperature directly, so that production procedures are simplified and production cost is saved.

The invention discloses an atmospherecontrolled electrostatic spinning apparatus and its industry application, and the said electrostatic spinning apparatus includes statitron (1) with material chamber(3) of prograding piston (301), incubator (4), blow head (6), electrostatic spinning surgetank (8), receiver (9), high-voltage electrostatic field electrode and material dispatcher(5) installed in incubator (4). The invention improves the electrostatic spinning method and largely improves the spinning rate by adopting a plurality of spray caps, and the invention can distinctively improve the quality of the electrostatic shaped article, control the solvent volatilization speed, stabilize the environmental factor in electrostatic forming process, increase the raw material and solvent species used for electrostatic figuration and improve the electrostatic spinning deliverability. The invention extremely reduces the unit cost of the electrostatic spinning and widens the application foreground.

The invention provides a method for preparing an improved fibrino spinning original solution that ion liquid is used as solvent, which includes: two phases of swelling and dissolution, namely, placing dried fibrino dissolving pulp and 1-butyl-3-methyl imidazole villaumite with 1%-20% water ratio into a dissolution device for uniform mixing, firstly, leaving and swelling in 70-100 DEG. C, then stronger stirring for swelling to plasm shape without dissolution; secondly, raising temperature to 80-125 DEG. C slowly in stirring state, stirring and reducing pressure distillation for removing water component, fibrino can be dissolved completely after 2-8h; finally, reducing stirring speed, and reducing temperature of plasm to 90-100 DEG. C and keeping 30-60 min for obtaining straw yellow spinning original solution. The method provided by the invention has advantages that the spinning original solution is more uniform, dissolution is more fully, gelatin particle in the spinning original solution is reduced, the spinning original solution quality is increased; apparent viscosity of the spinning original solution is reduced, accordingly, solid content in the spinning original solution is increased further.

The invention discloses a novel centrifugal melt electrostatic spinning device and belongs to the field of electrostatic spinning. The whole set of the device comprises a supporting and power system, a material supplying and temperature controlling system, a spinning sprayer and a collection system. The novel centrifugal melt electrostatic spinning device utilizes the common effect of high-voltage electric field force and high-speed centrifugal force, so that a nano superfine fiber is spun by using a macromolecular melt; materoals can be discontinuously added into a charging room to realize continuous spinning of the whole device; and a plurality of layers of shower nozzles not only can greatly improve the spinning efficiency, but also can obtain a fiber membrane with the certain width, being good for realizing industrial production.

The invention relates to a method for preparing an aramid IIII fiber, which comprises the following steps of: (1) synthesizing a spinning stock solution, carrying out low-temperature copolymerization by adopting three monomers of p-phenylenediamine, paraphthaloyl chloride and 5(6)-amido-2-(4-amidophenyl)benzimidazole as raw materials and adopting dimethylacetylamide / lithium chloride as a solvent; (2) spinning by adopting a dry method spinning process, i.e. leading the spinning stock solution obtained in the previous step to pass through a spinneret and directly enter a hot inert gas channel and evaporating and removing the solvent in the spinning stock solution by utilizing a hot inert gas to obtain cured raw yarn; and (3) carrying out water washing and heat treatment on the raw yarn and winding to obtain the aramid IIII fiber. The method has high solid content of the spinning stock solution, high spinning speed, great improvement of spinning efficiency, obvious reduction of fiber manufacturing cost, improved mechanical performance of the manufactured aramid IIII fiber and wide application prospect.

The invention relates to continuous high efficiency nano spinning solution (15), a nanofiber nonwovens manufacturing method and a manufacturing device which not only has high manufacturing efficiency but form better thickness of the nanofiber nonwovens. The manufacturing device comprises a solution supply system, a solution feeding pipe (8), a connecting mechanism and a metal roller (6); a metal strainer (10) and a fiber receiving web (11) which have the same shaft with the metal roller are sequentially arranged on the outside of the metal roller (6), an unreel roller (12) and a winding roller (13) are arranged on the fiber receiving web (11), and pores (7) are cut on the hollow metal roller (6). The manufacturing method includes the steps: (1), polymer spinning solution (15) is prepared; (2), an electric field is arranged between the metal roller (6) and metal strainer (10); (3), the metal roller (6) is revolved at a certain speed; (4) a measuring pump (4) is led to the metal roller (6) for even internal inputting; (5), the nanofiber is received. The invention is good for the scale manufacturing of static spinning.

The invention provides a method for spinning high-grade knitting yarns by using long flax fibers. The method comprises the steps of: carrying out crystallization modification treatment on the long flax fibers, carrying out gilling, combing, slivering, drawing, roving, boiling-off, bleaching and spinning operations sequentially, and carrying out electronic yarn clearing and waxing simultaneously in a spooling process, thereby forming the knitting yarns. According to the method provided by the invention, the crystallization modification treatment is carried out on the long flax fibers, so that the fibers are soft in texture and have an improved uniformity for dry adjustment, therefore a foundation for spinning the high-grade knitting yarns is laid; and electronic yarn clearing and waxing operations are simultaneously carried out in the spooling process owing to the facts that the fibers are soft in texture and have an improved uniformity for dry adjustment after the crystallization modification treatment is carried out on the long flax fibers, therefore the spinning efficiency is improved, and the knitting yarn quality is improved.

The invention discloses a spinning method of multi-component multi-segment color yarns. In the spinning procedure, three roves at least in one color and one material are simultaneously fed into a super-large drafting spinning machine which is formed by four rollers and four aprons and which operates in a three-region drafting mode. The spinning method has the advantages that according to the feeding mode of the three roves, the multi-component segmental color yarns with three different colors can be produced, the color yarns in different styles can be produced, and yarn added value is increased; in the spinning procedure, 30 to 300 times of super-large drafting can be realized through the four rollers and the four aprons in the three-region drafting mode, foundation for simultaneously feeding three roves is established, spinning efficiency is improved effectively, and meanwhile, spinning-compatibility and yarn quality of the color yarns are improved.

The invention discloses ultra-high-count pure cotton combing yarn and a spinning technology of the ultra-high-count pure cotton combing yarn. Raw cotton comprises, by weight, 15%-25% of Egypt cotton, 25%-35% of American cotton and 40%-50% of Xinjiang long stapled cotton, wherein the Egypt cotton, the American cotton and the Xinjiang long stapled cotton are blended to spin 200S to 300S pure cotton yarn. The spinning technology includes the following steps that the first procedure of blowing-carding, the second procedure of combing, the third procedure of drawing, the fourth procedure of roving yarn, the fifth procedure of spun yarn and the sixth procedure of spooling. With the blending scheme, the raw cotton can integrate the advantages of high fineness and good maturity of the Egypt cotton, the advantages of high strength and non-existing abnormal fibers of the American cotton, the advantage of large length of the Xinjiang long stapled cotton and the like. The raw cotton reaches the requirements for the fiber length, the length CV value, the Micronaire value, the fineness, the strength and other performance indexes of raw cotton in producing ultra-high-count yarn. According to the spinning technology of the ultra-high-count pure cotton combing yarn, the ultra-high-count yarn can be produced under a large ration of roving yarn, the spinning efficiency is improved and meanwhile, quality of resultant yarn is ensured.

The invention relates to a continuous mass production method and continuous mass production equipment for electrospun nanofiber membranes. The method comprises the following steps: (1), electrified electrodes are kept in a vibrating state to drive polymer liquor to a plurality of protrusions on the upper surfaces of the electrified electrodes, so as to form a Taylor cone, and ensure that the whole upper surfaces become spinning surfaces, which obtains high spinning production capacity; (2), air in the space between two electrodes is sucked to the back side of a counter electrode to generate an air flow, so that stressed drift of nanofiber is accelerated, and the nanofiber is sucked to be laid on a continuous receiving screen to form a membrane; and (3) the air flow is heated dry hot air. The equipment comprises a polymer container, the vibrating electrified electrodes, the continuous receiving screen, the counter electrode and a negative pressure chamber, wherein the upper surfaces of the vibrating electrified electrodes are approximately in accordance with the liquid level; the counter electrode is made of a metal mesh or a porous metal plate; the negative pressure chamber comprises a hood, a rear air chamber, a balancing plate and an air suction pump; each vibrating electrified electrode is a metal mesh-shaped plane or a porous metal flat plate; innumerous holes and innumerous small protrusions are formed on the plane; and the small protrusions are regularly arranged and higher than the plane. The invention facilitates mass production of the electrospun nanofiber membranes.

The invention discloses portable electrostatic spinning equipment and a using method thereof. The equipment comprises a dry battery power source, a high-voltage electrostatic generator, a gas generator and a spinning ejection device. According to the equipment, a dry battery arranged in a battery bin is used as the power source, the high-voltage electrostatic generator comprises a DC-high voltage DC inverter and a voltage regulation circuit. The voltage provided by the dry battery is increased by the DC-high voltage DC inverter to be used as spinning voltage, the airflow auxiliary spinning technology is used, a spinning nozzle is sleeved with an airflow guide pipe connected with the gas generator, and the flow direction of airflow guided into the airflow guide pipe by the gas generator is the same as the spinning jet injection direction. The equipment is low in mass, small in size and convenient to carry, can be used with no external power source, is not limited by using environment, can precisely control and adjust spinning parameters, is convenient to use and wide in application range and can better achieve orientated fiber deposition.

The invention discloses an intelligent management system for an intelligent spinning workshop. The intelligent management system comprises an information monitoring system, an information processing system and an information regulation system. Data of the whole spinning workshop is monitored by the information monitoring system in real time, then data in the spinning workshop is processed by the information processing system to obtain regulation parameters of the intelligent spinning workshop, and finally, running of equipment in the intelligent spinning workshop is regulated by the information regulation system. The intelligent management system for the intelligent spinning workshop achieves automatic production and transportation control from raw materials to finished products and onlinemonitoring and control over the quality and yield of the products through an informatization network technology, a fusion sensor technology, frequency-conversion speed regulation and the like, the product quality and the production efficiency are significantly improved, the production cost is reduced, and the intelligent management system has the advantages of modernization, scientification and standardization.

The invention discloses a polyvinyl alcohol nanofiber membrane good in water resistance and a preparation method thereof. In the method, ionized water, organic acid, alcohols, polyvinyl alcohol, a crosslinking agent and a catalyst serve as main raw materials for electrostatic spinning solution; and the degree of crosslinking of the polyvinyl alcohol nanofiber membrane is improved through heat treatment after electrostatic spinning. A disclosed process is green and environmentally friendly. Compared with a conventional nanofiber filtering material, the polyvinyl alcohol nanofiber membrane is free of solvent recovery and solvent residue problems and free of toxic and side effect, and the prepared polyvinyl alcohol nanofiber membrane has excellent water resistance and can serve as a medical dressing or an air filtering material.

The invention relates to a needless electrostatic spinning device. The needless electrostatic spinning device is composed of a spinning jet, a reception electrode, a high voltage power supply, a solution tank used for storing polymer solution, a waste fluid slot, base materials, a winding system of the base materials and the like, or the needless electrostatic spinning device is composed of the spinning jet, the reception electrode, the high voltage power supply, the solution tank used for storing polymer solution, the waste fluid slot, base materials, the winding system of the base materials, a heating device, an electric heating control device thereof and the like. The spinning jet adopts a slit-type spinning jet. The spinning jet is integrally constituted through the tight fitting of a left semi-spinning jet and a right semi-spinning jet, and the left semi-spinning jet and the right semi-spinning jet are fastened through a threaded connector, or the spinning jet is constituted by a left spinning jet component, a right spinning jet component and a flow-equalizing grid plate clamping piece arranged between the left spinning jet component and the right left spinning jet component. According to the needless electrostatic spinning device, the slit-type spinning jet is adopted, assembly, disassembly and cleaning are convenient, nano fibers can be produced continuously and effectively, and the spinning efficiency is improved greatly; the needless electrostatic spinning device can be applied both to the electrostatic spinning of the polymer solution and to the electrostatic spinning of the polymer molten mass.

The invention relates to a high voltage static power shuttle nano-spinning device. The device is composed of a spinneret nozzle, a liquid storage cavity, a metal valve needle, an adjusting cap, a liquid supply tank, a multifunctional high voltage static generator, a cavitation machine, a cavitation machine deckle rod, a positive pressure power pump, a positive pressure power pipe, a siphon type feed pipe, a net structure electrode, a receiving substrate, an unwinding roller, a winding roller, nanofiber, a constant temperature system, a ventilating system, an illuminating system and an environment isolation box. A high voltage static power shuttle body is formed by the spinneret nozzle, the liquid storage cavity, the metal valve needle, the adjusting cap and a shell. A high voltage static power shuttle is jointly formed by the spinneret nozzle, the liquid storage cavity, the metal valve needle, the adjusting cap, the shell, the multifunctional high voltage static generator, a liquid storage tank, the siphon type feed pipe, the positive pressure power pipe, the cavitation machine, the cavitation machine deckle rod, an output line, the ventilating system, the illuminating system, a humidity and temperature regulator and the box. Through the establishment of the high voltage static power shuttle and the adjustment of the size of the spinneret nozzle, the static field intensity, the pressure and the frequency of the cavitation machine, the spinning speed and the diameter of the nanofiber can be adjusted, and the high voltage static power shuttle nano-spinning device has the advantages of being high in spinning efficiency, free of blocking, easy to clean, safe, reliable, easy and convenient to operate, environmentally friendly and the like.

The invention belongs to the technical field of nonwoven fabrics, and discloses sandwich microcapsule composite antibacterial nonwoven fabric and a preparation method and application thereof. The sandwich microcapsule composite antibacterial nonwoven fabric comprises an intermediate layer and a first surface layer and a second surface layer which are arranged at the two sides of the intermediate layer. The composition of the intermediate layer is antibacterial microcapsules. The first surface layer and the second surface layer are nanofiber membranes prepared by electrostatic spinning. The microcapsules are prepared by using natural herbal antibacterial components, and the electrostatic spinning technology is adopted so that the disadvantages that the microcapsules are poor in stability, liable to lose and low in acting efficiency can be overcome. The prepared sandwich microcapsule composite antibacterial nonwoven fabric is green, environment-friendly and stable and has great antibacterial effect.

The invention discloses a free-surface coaxial centrifugal electrostatic spinning spinneret which comprises a first liquid inlet cavity, a second liquid inlet cavity, a first spinning cavity, a secondspinning cavity, a third spinning cavity, communication channels, a motor and connection columns. A first folding sheet and a second folding sheet are arranged at intervals to form the first spinningcavity; the second folding sheet and a third folding sheet are arranged at intervals to form the second spinning cavity; the third folding sheet and a fourth folding sheet are arranged at intervals to form the third spinning cavity; the first spinning cavity and the third spinning cavity are arranged on the upper side and the lower side of the second spinning cavity, and the communication channels are fixed onto the second folding sheet and the third folding sheet; the first folding sheet and the second folding sheet are connected with the third folding sheet and the fourth folding sheet by the connection columns. The free-surface coaxial centrifugal electrostatic spinning spinneret has the advantages that the problems of complicated influence factors of common coaxial pinhead electrostatic spinning processes, difficulty in cleaning devices, easiness in blocking spray orifices and the like can be solved by the aid of the free-surface coaxial centrifugal electrostatic spinning spinneret; the spinning efficiency and the spinning stability can be improved, and composite fiber materials with skin-core structures can be effectively prepared by the aid of the free-surface coaxial centrifugal electrostatic spinning spinneret on a large scale.

The invention discloses four-roller ultra-large drafting siro spinning AB yarns, which are characterized in that A coarse yarns comprise 50% weight percent of Xinjiang long stapled cotton and 50% weight percent of cashmere fibers; and B coarse yarns comprise 55% weight percent of viscose, 20% weight percent of chinlon and 25% weight percent of bamboo fibers. A production method for the four-roller ultra-large drafting siro spinning AB yarns comprises the steps of feeding the A and B coarse yarns, processed and machined according to a ratio, into rear rollers by a dual-horn port, and obtaining the four-roller ultra-large drafting siro spinning AB yarns through four-roller three-area ultra-large drafting. The four-roller ultra-large drafting siro spinning AB yarns and the production method thereof can comprehensively utilize excellent properties of various fibers, realize the excellent comfort and antibacterial function of the blending yarns, realize the multifunctional demands of the yarns, and meet actual demands; and meanwhile, the ultra-large drafting is realized by adopting the four-roller four-leather ring three-area drafting, thus improving the spinning suitability and the finished yarn quality of the yarns.

The invention discloses ageing resisting master batche for spinning polypropylene material and products and a preparation method for the ageing resisting master batche. The ageing resisting master batche is prepared from the following raw materials in parts by weight: 65-80 parts of polypropylene resin, 2-5 parts of a hindered phenol anti-oxidant, 3.5-6 parts of an auxiliary anti-oxidant, 8-17 parts of a light stabilizer, 3-6 parts of a dispersing agent, and 1-2 parts of a processing additive. The preparation method comprises the following steps: (1) mixing all the raw materials uniformly; (2) conducting melt extrusion and pelletization. The prepared ageing resisting master batche can effectively restrain the thermal degradation of polypropylene in a spinning manufacturing process, remarkably delays photooxidation aging and thermo-oxidative aging of spinning polypropylene products in outdoor using environment, remarkably prolongs the service life, and has the functions of improving the processability of resin, removing accumulation at die head and improving spinning efficiency.

The invention relates to a nano filtering membrane containing silk fibroin consisting of complex fibers formed by silk fibroin and nano carbon, wherein the membrane contains 70-95wt% of silk fibroin and 3-30wt% of carbon nanospheres in unit area, the filtering membrane is 0.05-5 microns thick, has high specific area of fiber, strong adsorption effect and high strength, and is durable. The preparation method of the nano filtering membrane comprises the following steps: (1) putting silk into a sodium carbonate solution, boiling for degumming, and filtering to obtain coarse silk fibroin; (2) putting the obtained coarse silk fibroin into a calcium chloride solution for dissolution, thus obtaining an initial liquid of silk fibroin; (3) desalting the obtained initial liquid of silk fibroin to obtain a silk fibroin fluid; (4) adding carbon nanospheres into the obtained silk fibroin fluid, and performing ultrasonic dispersion uniformly to obtain a spinning solution; and (5) performing electrostatic spinning on the obtained spinning solution to obtain the nano filtering membrane.

The invention relates to a melt electro-spinning device and technology capable of mixing supercritical gas. The device comprises a power device, an extruding device, a supercritical gas generator and a melt electro-spinning device body. The technology comprises the steps that polymer is firstly added into a charging barrel, heated to a melt state, and mixed with supercritical gas conveyed by the supercritical gas generator; the mixture is conveyed to a static mixer, and the polymer and the supercritical gas form a gas / polymer homogeneous system through the static mixer; the mixture is fed to the melt electro-spinning device body, the polymer is blown, pulled and thinned under the action of high-speed hot gas flow input in an electric field between a spray nozzle and a receiving device and a gas flow channel, and finally the mixture is deposited on the receiving device to obtain fibers. According to the melt electro-spinning device and technology capable of mixing supercritical gas, the extruding device and the melt electro-spinning device body are combined, and therefore nanofibers with good uniformity can be prepared continuously and stably.

The invention discloses a spinning method of multi-component multi-segment color yarns. In the spinning procedure, three roves at least in one color and one material are simultaneously fed into a super-large drafting spinning machine which is formed by four rollers and four aprons and which operates in a three-region drafting mode. The spinning method has the advantages that according to the feeding mode of the three roves, the multi-component segmental color yarns with three different colors can be produced, the color yarns in different styles can be produced, and yarn added value is increased; in the spinning procedure, 30 to 300 times of super-large drafting can be realized through the four rollers and the four aprons in the three-region drafting mode, foundation for simultaneously feeding three roves is established, spinning efficiency is improved effectively, and meanwhile, spinning-compatibility and yarn quality of the color yarns are improved.

Disclosed are a cotton sliver mercerizing process and a mercerizing device utilizing the same, which belong to the technical field of textile technology. The cotton sliver mercerizing process includes: a, cotton sliver pretreatment step including dewing cotton slivers and dewatering the same or squeezing water out of the same to form wet cotton slivers with certain liquid content; b, a cotton sliver reeling step including reeling the wet cotton slivers on a reeling machine and fixing the cotton slivers by lay bands; c, a covering step including wrapping the reeled cotton slivers with the wrapping cloth integrally; and d, a mercerizing step realized by concentrated spraying and instant squeezing. The sliver cottons are mercerized effectively by dewing to reinforce and by means of concentrated spraying and instant squeezing, and alkali content of the cotton slivers is controlled all the time, so that the cotton slivers cannot be dissolved due to excessive swelling, and the difficult problem of failure in mercerizing the cotton slivers without twist is solved. In addition, the mercerized cotton slivers are bright, smooth and fluffy, and dye color yield is increased by 20%-30%.

The invention provides a synchronous and anti-clockwise twist spinning device and a synchronous and anti-clockwise twist spinning method. The synchronous and anti-clockwise twist spinning device comprises a drafting mechanism and a winding mechanism, a yarn guiding device is arranged between the drafting mechanism and the winding mechanism, a false twist device is arranged between the drafting mechanism and the yarn guiding device, an upper side band and a lower side band are respectively contacted with fiber strands which are drafted and outputted through a front roller draft pair, a working face of pre-adding twist and a working face of balance twist are respectively formed, the working faces respectively generate twists opposite in twisting direction and identical in size with the fiber strands contacted with the working faces, the drafted double-fed strands are synchronously twisted through the twist generated from speed difference of a bobbin of a bead ring and the reverse twist synchronously generated from upper and lower working faces of the yarn guiding device, the final twist on yarn forming is unaffected by twist effect generated from a yarn forming area by the false twist device, double strands drafted are directed converged and twisted into yarn without changing final twist in yarn forming, quality in yarn forming is improved, and spinning efficiency is improved.

The invention discloses a detachable adjustable long shuttle type nozzle for solution jet spinning. The nozzle comprises an airflow inlet branch pipe A, an airflow inlet branch pipe B, a rubber plugging sleeve, a needle head, a long shuttle type airflow pipeline and a nozzle outlet adjusting device; the airflow inlet branch pipe A and the airflow inlet branch pipe B are communicated with the long shuttle type airflow pipeline with a certain angle; the rubber plugging sleeve is fixed between the airflow inlet branch pipe A and the airflow inlet branch pipe B and can adjust the distance of the needle head extending out of the outlet; the long shuttle type airflow pipeline can be retracted in a certain length-diameter ratio; the nozzle outlet adjusting device can adjust the section area o the outlet. Compared with other solution jet nozzles, the nozzle has the advantages that the mounting and the dismounting are convenient, the change of an airflow field in the jet solution spinning can be effectively adjusted, related technical parameters in the jet solution spinning can be effectively adjusted, the stretching airflow field in which fibers are positioned can be improved, and therefore, micro-nanofibers can be obtained conveniently.

The invention provides a polymer solution electrostatic spinning component, a device and a method. The spinning component comprises a first electrode, a second electrode which is placed opposite to the first electrode, and a spraying mechanism which is positioned between the first electrode and the second electrode, wherein the first electrode is a plate electrode; and the spraying mechanism is used for spraying solution to the surface of the first electrode and is provided with a flat plate and a scraping cutter. Because the first electrode with a large area is used, a large-area spinning region can be formed, and the spinning efficiency is greatly improved. The flat plate in the spraying mechanism is used for flatly spraying a newly-sprayed spinning solution, and the scraping cutter can be used for removing the residual old solution of the previous spinning to prevent a new solution from being mixed with the old solution, so that the spinning quality is improved.

The invention provides an electro-spinning micro-nanofiber device and a method for preparing a micro-nanofiber and belongs to the field of biological materials and tissue engineering. The electro-spinning micro-nanofiber device comprises a high-voltage power supply, receiving devices, a porous spinning jet and a rotary motor, wherein the porous spinning jet is of a hollow cylindrical structure, and the hollow part is an electro-spinning stock solution storage groove capable of accommodating an electro-spinning stock solution; a plurality of spray orifices are formed in the surface of the porous spinning jet; one pole of the high-voltage power supply is connected with the receiving devices, and the other pole of the high-voltage power supply is connected with the porous spinning jet; the rotary motor drives the porous spinning jet to rotate. By virtue of the porous device, the yield can be improved, and micro-nanofibers with uniform directivity are obtained. Meanwhile, the required application voltage can be greatly reduced, and the method for adjustment and control of the more uniform spinning directivity through a single step is also provided.

The application discloses a multi-nozzle static spinning device which comprises a plurality of spinning nozzles, a collecting device and high voltage power supplies, wherein a spinning solution flow passage is formed in each spinning nozzle in the axial direction; warm air flow passages are formed in the periphery of each spinning solution flow passage; the warm air flow passages are communicated with an air pump; a heating device is arranged between the air pump and the warm air flow passages. According to the invention, the warm air flow passages are formed in the periphery of each spinning solution flow passage, through the stretching function of the warm air flow passage, the diameter of the fiber can be further reduced, the unstability of the static spinning process can be improved, the landing direction of fibers can be guided, and the efficiency of the static spinning technology can be improved; through the utilization of the combined action of airflow stretching and electrostatic force stretching, the controllability and yield of nanofiber preparation can be improved, and the yield is improved by times to dozens of times as compared with the standard electrospinning technology.

The invention relates to an anti-haze screen window and a preparing method thereof. The anti-haze screen window is made of high polymer materials, titanium dioxide nanoparticles and screen window materials through an electrostatic spinning method. The high polymer materials are one or more of polyvinylidene fluoride, poly methyl methacrylate, thermoplastic polyurethane, polyacrylonitrile and polyethylene terephthalate. According to the anti-haze screen window, the spinning efficiency is high, nano-fiber membranes are uniform and are in close fitting with the screen window, holes are dense, ventilation and breathability are achieved, the screen window can be anti-haze, anti-dust, anti-pollen and anti-mosquito, PM2.5 particulate matters are be effectively blocked, the PM2.5 filtering efficiency reaches more than 99%, clean air effective circulation indoor and outdoor is maintained, and exhaust gas pollution of automobile tail gas is effectively solved. The preparing method of the anti-haze screen window is simple, raw materials are easy to obtain, the cost is low, and scale production is easy.