117results about "Spinning solution de-aerating" patented technology

The invention discloses a synthetic leather nascent fiber melt extrusion device and a use method, and belongs to the technical field of spinning machines.The synthetic leather nascent fiber melt extrusion device comprises a shell, an injection pipe is installed at the position, close to the upper end, of the left side of the shell, a conveying pipeline is installed at the position, close to the lower end, of the right side of the shell, and a spinneret plate is installed at the right end of the conveying pipeline; and a filter cartridge is mounted in the shell. The motor can drive the filter cartridge to rotate and dynamically change the filtering area, so that the possibility of blockage of the filtering holes is effectively reduced, the uniformity of the filtering process is ensured, excessive blockage of the local filtering area is avoided, and when the filter cartridge rotates, the touch block is utilized to touch the touch switch, so that the filtering efficiency is improved. The electromagnet is instantly controlled to drive the cleaning needle to automatically clean impurities and small bubbles in the filter holes, then the small bubbles are discharged in time by using vibration force during cleaning, and the problem that the bubbles penetrate through the filter holes due to pressure deformation, and spinning is interrupted is solved.

The invention relates to the technical field of high polymer material processing, and discloses an efficient polyester fiber continuous production method based on multi-screw cooperation, which comprises the following steps: S1, raw material pretreatment and conveying: carrying out multi-stage filtration on a polyester raw material, and simultaneously directly conveying supercritical fluid to a feed port of a multi-screw extruder through a closed pipeline; s2, adding a catalyst: adding an organic metal complex catalyst before the polyester raw material enters a reaction extrusion stage; s3, carrying out multi-screw synergistic reaction; s4, data acquisition and analysis; s5, performing dynamic adjustment and feedback; s6, separating and recycling; and S7, spinning and post-processing. Through cooperation of multiple screws and the supercritical fluid and the catalyst, impurities in the raw materials can be dissolved, the activation energy of the reaction can be reduced, the purity of the raw materials can be improved, the viscosity of the materials can be reduced, the flowability is improved, uniform mixing of the raw materials and the catalyst is promoted, the reaction activity is remarkably enhanced, and a foundation is laid for subsequent efficient polymerization reaction; the quality and the production efficiency of the polyester fibers are improved.

The invention discloses a method for preparing polyester industrial filaments by recycling polyester chips from waste spinning products and the polyester industrial filaments, and belongs to the technical field of chemical fibers. The method comprises the following steps: by taking waste spinning product recycled materials as raw materials, carrying out solid-phase tackifying on the polyester chips recycled by a DMT method to obtain high-viscosity chips; extruding and melting the high-viscosity slices to obtain a spinning melt; extruding the spinning melt to obtain a melt trickle; carrying out slow cooling treatment on the melt trickles, and cooling through circular blowing or lateral blowing to obtain a strand body; the filament body is stretched and shaped, then low polymer blowing and winding are carried out, and the industrial polyester filament is obtained. According to the method, the waste spinning products are used for recycling raw materials, the production process is optimized, resources are saved, incineration is reduced, carbon emission is avoided, landfill is reduced, environmental protection is facilitated, land occupation is reduced, and human health is protected; and good performance and qualified rate of the product are ensured, so that the physical performance, broken filament performance and spinnability of the final product can meet the requirements.

The invention relates to the technical field of control systems, in particular to a high-strength polyethylene fiber melt flow control system and method. Comprising a melt conveying unit, a pressure adjusting unit, a temperature control unit, a flow monitoring unit and a central control unit, the melt conveying unit is used for conveying high-strength polyethylene fiber melt; the pressure adjusting unit is arranged in a pipeline of the melt conveying unit and used for adjusting melt conveying pressure. The temperature control unit is used for controlling the temperature in the melt conveying process; the flow monitoring unit is arranged at the tail end of the melt conveying unit and used for monitoring the melt flow in real time; the central control unit is electrically connected with the pressure adjusting unit, the temperature control unit and the flow monitoring unit, receives monitoring data of the flow monitoring unit and conducts coordinated regulation and control on the pressure and temperature of the melt through the pressure adjusting unit and the temperature control unit according to preset flow parameters. The flow of the high-strength polyethylene fiber melt is accurately controlled.

The invention belongs to the technical field of polyester fiber spinning, and discloses a polyester fiber spinning device and a processing method thereof.The polyester fiber spinning device comprises a shell, a metering pump fixed to the top of the shell and an air cooling heat dissipation part located at the bottom of the shell, a conveying assembly is fixedly connected to the interior of the shell in a sleeved mode, and the bottom of the conveying assembly fixedly communicates with a distribution assembly. Staggering is completed by means of left-right deflection of the upper-layer spinning assembly and the lower-layer spinning assembly, after moving and staggering are conducted through a first adaptation groove and a second adaptation groove in the spinning assemblies, the first adaptation groove is aligned and communicated with the lower hole, the second adaptation groove is aligned and communicated with the upper hole, and flushing water guided into the first adaptation groove and the second adaptation groove is utilized for flushing the upper hole and the lower hole. According to the spinneret assembly, flushing and cleaning from inside to outside are carried out towards the spray holes in the upper side and the lower side in an isolated mode along the interior of the spinneret assembly, on one hand, blocking objects in the spray holes are cut off when the deflected lower half spinneret plate rotates, on the other hand, a flushing mode from inside to outside exists, and the final flushing effect is improved.

The invention belongs to the field of high-performance materials, and discloses a high-thermal-conductivity PBO fiber and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a PBO polymer solution with a conventional molecular weight; (2) preparing an ultra-high molecular weight PBO polymer solution; (3) mixing the two PBO polymer solutions in a double-screw extruder according to a certain proportion to obtain a PBO spinning solution; (4) preparing as-spun PBO fibers by adopting a dry-wet liquid crystal spinning process and a condensed state structure regulation and control means; and (5) washing, drying, oiling and winding the as-spun PBO fiber to obtain the high-thermal-conductivity PBO fiber. According to the method, a small amount of the ultra-high molecular weight PBO polymer is added into the conventional spinning solution, the heat conduction performance of the PBO fiber is remarkably improved through the induced orientation crystallization effect of an ultra-high molecular weight PBO long chain, and the method has good application prospects in the field of high-power radio frequency microwave circuits with high requirements for heat dissipation capacity.

The invention discloses a preparation method of ultra-high molecular weight polyethylene fiber, fiber and spinning equipment, and the preparation method comprises the following steps: (1) mixing ultra-high molecular weight polyethylene powder with a solvent, uniformly swelling, and feeding into a twin-screw extruder for fully dissolving to obtain a spinning solution; spraying the spinning solution through a spinneret plate, drafting in an air gap, and cooling in a cooling bath to obtain gel silk; (2) carrying out shrinkage balance on the gel silk; then carrying out pre-extraction and pre-drying to obtain gel filaments with low solvent concentration, and storing the gel filaments in a filament containing barrel for later use; and (3) sequentially carrying out multi-stage extraction, drying, multi-stage drafting and winding on the jelly silk with low solvent concentration to obtain the ultra-high molecular weight polyethylene fiber. Through the steps of shrinkage balance, pre-extraction and drying treatment on the gel silk, adverse effects caused by solvent precipitation and gel silk shrinkage in the standing process of the gel silk can be reduced, the fiber fineness can be controlled to be stable and uniform, the production process is short, the occupied area of equipment is small, and the investment is low.

The present application relates to polybutylene terephthalate (PBT) material toothbrush filament technical field, specifically relates to a kind of multifilament version anti-lodging PBT monofilament and preparation method thereof;The preparation method is realized with the basic concept of multifilament to realize the basic form of monofilament, in the drawing process, every three monofilaments are gathered into a multifilament, in the subsequent water cooling, oiling etc. Process path, with the mode of multifilament, drafting, winding forming are completed.In the condition that monofilament specification remains unchanged, corresponding design is carried out to production process, and the quality indexes such as breaking strength, breaking strength variation coefficient, breaking elongation, breaking elongation variation coefficient of monofilament are controlled.In the realization equipment efficiency is improved three times target, product quality is upgraded, and the anti-lodging performance of PBT monofilament is improved.

The invention discloses a chinlon 6 filament based on high carboxyl modification and a preparation method thereof, and belongs to the technical field of chinlon production. The polyamide 6 filament based on high carboxyl modification is prepared by adopting PA6 slices with low-end amino groups and high-end carboxyl groups as raw materials, the ordered combining capacity of fibers and anionic dye is enhanced by reducing the content of the end amino groups and increasing the proportion of the end carboxyl groups, the dye is prevented from being accumulated on the surface, the dyeing uniformity and the dyeing permeability of the polyamide 6 filament are improved, and the dyeing quality of the polyamide 6 filament is improved. Meanwhile, the production parameter combination is precisely regulated and controlled, so that more microporous structures are reserved to adsorb the dye while the high viscosity of the high-carboxyl section is solved in the production process, and dye molecules are more easily diffused into the fiber; the prepared chinlon 6 filament based on high carboxyl modification realizes high-saturation and high-uniformity dyeing under low dye concentration, has ideal dye-uptake and fixation rate, and also has excellent dyeing effect on light-color sensitive colors, not only reduces the washing times after the chinlon filament is dyed, but also does not fade after being washed for multiple times.

The invention discloses a polylactic acid fiber non-woven fabric preparation method, which comprises: putting PLA particles into a vacuum dryer, drying at 60-80 DEG C for 4-6 h, and feeding the dried PLA particles into a storage hopper of a screw extruder through a screw conveyor; pLA particles are melted and plasticized through an extruder, melt is filtered through a metal sintering filter screen, a gear pump is used for conveying and metering, and the melt is conveyed to a spinning assembly; manufacturing the melt into a polylactic acid fiber net by using a spinning assembly; winding the polylactic acid fiber net by using a winding machine; the temperature of the screw extruder is controlled in a partitioned manner, the screw extruder comprises a feeding section, a compression section and a homogenization section, the temperature of the feeding section is 150-160 DEG C, the temperature of the compression section is 170-180 DEG C, and the temperature of the homogenization section is 180-190 DEG C; in the spinneret plate assembly, spinneret orifices are special-shaped orifices. The method can guarantee the mechanical property of the fiber, improve the interception efficiency of the non-woven fabric and improve the longitudinal tensile strength of the non-woven fabric. The method is more suitable for manufacturing masks, wet tissues, packaging bags, sanitary napkins and paper diapers.

The invention discloses a flame-retardant fiber prepared from a modified inorganic nano material and a production device of the flame-retardant fiber, belongs to the technical field of flame-retardant fiber production, and solves the problems that a filter element is difficult to disassemble and assemble, the filter element is inconvenient to clean and the melt filtering stability is poor in the prior art. A filter assembly is arranged in each of the two filter cavities, a switching valve is arranged on the outer wall of the melt filter, the filter states of the two filter assemblies are switched through the switching valve, each filter assembly comprises a base, and a plurality of mounting holes are formed in each base. The filter element can be mounted and dismounted by directly inserting and pulling out the inserting rod after the connecting rope is opened, so that the dismounting difficulty of the filter element is greatly reduced.

The invention discloses an anti-dripping flame-retardant polyester fiber with seeds and a production device thereof, belongs to the technical field of polyester fibers, and solves the problems that a spinning plate is easy to block, high in replacement frequency and high in production cost in the prior art, the anti-dripping flame-retardant polyester fiber comprises a spinning assembly, the spinning assembly comprises a shell, a sealing plate is arranged on the upper portion of the inner side of the shell, and the spinning plate is arranged on the lower portion of the inner side of the shell; a filter unit is arranged between the spinning plate and the sealing plate, the shell comprises an upper half shell and a lower half shell, a limiting ring is arranged on the lower portion of the inner side of the lower half shell, a first step groove is formed in the outer wall of the spinning plate, and the first step groove is erected on the limiting ring in a matched mode. By designing the spinning assembly which can be rapidly and conveniently detached, the detaching and cleaning efficiency of the spinning plate is improved, so that the spinning requirement of polyester fibers can still be met under the condition that the inventory of the spinning plate is reduced, and it is ensured that when a melt contains more compounds such as a melt drop resisting agent, the melt drop resisting agent can still be removed. The spinning assembly can complete spinning operation with a high standard.

The present invention relates to a polyacrylonitrile-based carbon fiber, a polyacrylonitrile solution and a preparation process thereof, which mainly solves the problem that the presence of gel particles in the polyacrylonitrile solution in the prior art causes poor mechanical properties of the carbon fiber. The present invention provides a polyacrylonitrile-based carbon fiber, wherein the micropore radial size LP is less than or equal to 2.0 nm and the micropore aspect ratio L / LP is greater than or equal to 50 and less than or equal to 100, and optionally the diameter Cv value is less than or equal to 3%. The present invention also provides a polyacrylonitrile spinning dope, wherein the total number of gel particles with a particle size greater than 0.15 µm is less than or equal to 1×105 particles / mL, and the proportion of gel particles with a particle size greater than 5 µm to the total gel particles is less than or equal to 0.3%; wherein the equilibrium swelling degree of the gel particles is 250~5000%. The present invention also provides a preparation process of a polyacrylonitrile solution and a preparation process of a polyacrylonitrile-based carbon fiber.

The invention relates to the technical field of chemical fiber production equipment, and discloses a production device of flame-retardant anti-molten-drop chinlon 6 filaments, which comprises a production platform and a console arranged on the production platform, and further comprises a feeding assembly, the feeding assembly comprises a chinlon 6 slice feeding cylinder, a first-stage mixing assembly is arranged below the chinlon 6 slice feeding cylinder, and a second-stage mixing assembly is arranged below the first-stage mixing assembly. The tail end of the first-stage mixing assembly is connected with the second-stage mixing assembly, and the melting assembly is nested on the outer side of the first-stage mixing assembly. According to the device, a two-stage mixing structure of double-screw staggered shearing and planetary gear meshing shearing is adopted, accurate quantity control feeding is achieved through the metering screw, a global uniform shearing field is constructed, a mixing path is prolonged, the technical problems of flame retardant agglomeration and uneven mixing in traditional single-stage mixing are solved, and the flame retardant mixing efficiency is improved. According to the invention, the dispersion precision of the flame retardant in the melt is ensured to reach the required dispersion precision of filament molding, the spinneret orifice blockage and the linear density deviation are avoided through filter plate filtration and multi-stage parameter regulation and control, and the flame-retardant consistency and the molding qualification rate of the chinlon 6 filament are obviously improved.

The invention discloses an efficient continuous spinning machine for polyester stretch yarn production, which comprises a spinning mechanism, the spinning mechanism comprises a conveying shell, and first electric heaters are arranged in the middles of the two sides of the conveying shell; one end of a first stirring rod arranged in the middle of the interior of the conveying shell is connected with a first bevel gear set connected with the output end of the lower end of the bidirectional motor through a first driving assembly, and the lower end of a discharging pipe arranged on the side, away from the first driving assembly, of the lower end of the conveying shell is detachably connected with a spinning nozzle. Two ends of the coupling are respectively connected with the other end of the first stirring rod and the cooling assembly. According to the efficient continuous spinning machine for polyester stretch yarn production, the liquid storage tank, the liquid conveying pipe and the liquid conveying pump are arranged and used in cooperation, a dissolving solution in the liquid storage tank is conveniently conveyed into the discharging pipe, then residual materials in the spinning nozzle are dissolved through the dissolving solution, and therefore the spinning nozzle is conveniently cleaned and dredged, blocking of the spinning nozzle is avoided, time and labor are saved in the mode, and the production efficiency is improved. The processing and production progress is improved.

The application discloses a kind of preparation device and process of recycled colored hollow polyester staple fiber for automotive interior, belong to polyester fiber preparation technical field, solve the problem that material is easy to jam, material disturbance is small, extrusion is not smooth in prior art, including storage tank, screw rod extruder, melt filter and spinning machine, the lower portion of storage tank and the hopper of screw rod extruder are funnel-shaped that gradually converges from top to bottom, and the outside of storage tank is provided with a clearing mechanism.The application can drive the plug rod by the extension and contraction of hydraulic cylinder and the expansion and contraction of air cushion when in use, effectively prevent the material from being jammed in the lower part of the storage tank or the upper part of the hopper, and the air cushion can supply air to the inside of the plug rod, thereby forming an air current at the opening of the plug rod, further improving the disturbance effect on the material.

A textile recycling method receives textile-waste-to-be-recycled, sorts the waste to isolate cellulose-containing articles from non-cellulose-containing articles, and re-sizes at least some of the cellulose-containing articles to create feedstock. The feedstock is processed in a cellulose solvent reactor, which has at least one ionic liquid. The ionic liquid dissolves intermolecular cellulose bonds of the feedstock to create a spinning dope. Cellulose fibers dissolved in the cellulose-bearing spinning dope solution are extruded in a cellulose coagulation bath reservoir to reconstitute at least some of the cellulose fibers, and the reconstituted fibers are wet-spun to form a continuous cellulose thread that is commercially indistinguishable from virgin fiber thread. Synthetic fiber material is vacuum-extracted or mechanically extracted from the cellulose-bearing solution and recycled into a continuous synthetic thread. Original color of textile-waste-to-be-recycled can be retained or removed, and new color can be added.

The invention relates to the technical field of regenerated polyester fiber production, in particular to regenerated high-elastic super-soft polyester staple fiber as well as a preparation method and application thereof. According to the method, regenerated polyester foam materials with the same viscosity are adopted as double-component raw materials, 0.1-2.0 wt% of a nucleating agent is added into a component A melt to improve the crystallinity, and 0.5-10.0 wt% of an aliphatic polyester oligomer is added into a component B melt to enhance the thermal shrinkage difference; the short fiber with the high-density spiral curly structure is prepared through parallel composite spinning, double-steam drafting and relaxation heat setting processes. The obtained fiber has excellent bulkiness, rebound resilience and soft hand feeling, is suitable for replacing traditional sponge and latex cotton, and is widely applied to the field of household filling.

The invention discloses a high-thermal-conductivity filler dispersion spinning assembly for producing ice-cold cotton-like filaments and a cooling process. The spinning assembly comprises a dispersion spinning assembly body and a three-partition side-blowing cooling assembly. The dispersion spinning assembly body is provided with a magnetic coupling non-penetrating-shaft dynamic shearing dispersion cavity, an annular ultrasonic vibration dispersion section and a gradient filtering unit. The side blowing cooling assembly comprises a low-temperature dry air area, an atomization wet air area and a rectification steady-state air area, and the air temperature, the humidity, the air speed and the atomization amount are adjusted in a linkage mode based on the spinning speed, the winding tension and the tow surface temperature. According to the scheme, the dispersion uniformity of the high-thermal-conductivity filler in the melt can be improved, the filtering pressure difference and spinneret orifice blockage are reduced, broken ends are reduced, the continuous spinning stability is improved, and meanwhile the contact instant cool feeling, the cotton-like style consistency and the washability are enhanced.

The invention discloses a carbon fiber precursor dry-jet wet spinning solidification device and process, and relates to the technical field of carbon fiber precursor spinning. The device comprises a spinning solution storage tank, a temperature control system is arranged on one side of the spinning solution storage tank, and the temperature control system comprises a first temperature control system and a second temperature control system; a conveying pump is fixedly installed at the bottom of the spinning solution storage tank, and high-strength and high-modulus carbon fiber production can be achieved by accurately controlling the components and temperature of the spinning solution. Physical characteristics of fibers are more consistent under stable process conditions, defects are reduced, an automatic metering and temperature control system is adopted, production efficiency can be remarkably improved, manual intervention is reduced, higher production efficiency means that more fibers can be produced within unit time, market requirements are met, production cost of unit products is reduced, and production efficiency is improved. The production cost can be effectively reduced by optimizing process conditions, such as reducing the use amount of a solvent and treating wastes.

The application discloses a preparation method of low-grain-size polyacrylonitrile precursor. The method comprises the following steps: drying and densifying the fiber after hot water drawing and oiling through 10-25 hot rollers, wherein the hot roller pressure is 0.45-0.55 MPa, the temperature interval is 146-167 DEG C, the temperature gradient between the hot rollers is 3-5 DEG C, and then the fiber after the drying and densifying treatment is subjected to steam drawing under the steam pressure of 0.30-0.60 MPa, and the drawing ratio is 4.0-4.5 times, so as to obtain the low-grain-size polyacrylonitrile precursor. The application uses steam as the heating medium, and realizes the effective regulation of the grain size of the precursor by the low-temperature long-time drying and densifying technology and the high-multiple steam drawing technology, the regulation of the drying temperature and time of the precursor bundle, the gradual removal of the water molecules in the bundle by the outward diffusion, and the crystal rupture of the grains under the high stress by the high-multiple steam drawing.

The present invention relates to the field of recycled polyester spinning technology, and more particularly to a parallel composite self-crimping polyester staple fiber made from recycled polyester, as well as a preparation method and production system thereof. This method utilizes polyester bottle flakes as a high-viscosity component and polyester foam as a low-viscosity component. Based on the establishment of a raw material viscosity database, the raw materials are proportioned to achieve intelligent, coarse viscosity adjustment. An online viscosity tester is then installed between the secondary filter and the box. Based on the measured melt viscosity, the melt viscosity is precisely adjusted by adding a chain extender and / or adjusting the shear rate of the melt stirring box, thereby stabilizing the melt viscosity difference. This ensures stable product quality and improves production efficiency.

The invention relates to the technical field of textile chemical fiber production, in particular to a production method of chinlon 66 industrial yarn and the chinlon 66 industrial yarn, and the production method comprises the following steps: step 1, performing tackifying treatment on chinlon 66 raw material slices to obtain high-viscosity chinlon 66 slices with formic acid relative viscosity of 75-93; step 2, carrying out humidifying treatment on the high-viscosity chinlon 66 slices obtained in the step 1; 3, the high-viscosity chinlon 66 slices obtained in the step 2 are subjected to melt compression, and chinlon 66 melt is prepared; 4, quantitatively feeding the chinlon 66 melt into a spinning assembly, spraying the chinlon 66 melt through the spinning assembly to form chinlon 66 nascent fibers, and then cooling the chinlon 66 nascent fibers; 5, the cooled nylon-66 nascent fiber is sequentially subjected to oiling, stretching, sizing and winding, and then the nylon-66 industrial yarn is obtained. The invention aims to solve the problem that the industrial yarn produced by the existing production method of the chinlon 66 industrial yarn has higher broken filaments and wool balls.

A dissolving and defoaming device comprises a dissolving tank, a vacuum pump, a circulating pump and at least one filter. The dissolving tank is configured to accommodate an adhesive liquid. The vacuum pump is connected with the top of the dissolving tank and is configured to remove bubbles in the viscose liquid. The circulating pump is connected to the bottom of the dissolving tank and is configured to extract the viscose liquid from the dissolving tank. The filter is connected with the circulating pump and the dissolving tank and located downstream of the circulating pump and upstream of the dissolving tank. The filter is provided with a plurality of screen meshes, and the screen meshes are different in mesh number and are configured to capture impurities and other bubbles of different sizes in the viscose liquid extracted from the dissolving tank. The dissolving and defoaming equipment can provide uniform, bubble-free and impurity-free spinning solution, is beneficial to the spinning process in the later stage and the physical properties of formed fibers, and further improves the product yield.

The application discloses a kind of preparation process of flame-retardant anti-dripping fiber, comprising the following steps: raw material mixing, efficient filtration, melt extrusion, step-by-step cooling solidification, post-processing, and flame-retardant anti-dripping fiber is prepared.The application accurately controls the proportion of flame retardant and mixing process in the raw material mixing stage, ensures that the flame retardant is uniformly dispersed in the polymer matrix, and provides efficient flame-retardant performance for the fiber;Efficient filtration link uses full-automatic replacement filter screen device to remove impurities regularly, ensures that the melt is pure and uniform;Melt extrusion and gradient cooling solidification process effectively reduces the internal stress and defects of the fiber, improves the fiber forming quality;Drafting and heat setting treatment in the post-processing stage further optimizes the fiber structure and enhances the mechanical properties.The flame-retardant anti-dripping fiber finally prepared has excellent flame-retardant anti-dripping performance and stable physical and mechanical properties, and the preparation method realizes the significant improvement of the performance of flame-retardant anti-dripping fiber through multi-link synergistic optimization.

The invention discloses application of a PA material in a composite rubber tube and a preparation method of the PA material. The used raw materials comprise butyl rubber, ethylene propylene diene monomer, lysine modified PA fibers and other auxiliaries. The preparation method of the PA material comprises the following steps: 1) preparing a lysine modified PA melt; (2) preparing non-oriented yarns; and (3) preparing the lysine modified PA fiber. The preparation method comprises the following steps: firstly, synthesizing amino-terminated and side-chain amino polyamide, reacting with bismaleimide twice in stages to obtain high-strength lysine modified PA fibers capable of being crosslinked with butyl rubber and ethylene propylene diene monomer, and carrying out thickness collaborative design on a fiber reinforced layer and a rubber layer to obtain the high-strength lysine modified PA fibers. The breakthrough of fiber strengthening and toughening, no slippage defect in interface connection and high medium resistance is achieved, the strong acid corrosion resistance, the high-pressure pulse service life and the mechanical strength of the rubber pipe are remarkably improved, and the rubber pipe is suitable for occasions such as cooling liquid pipelines, fuel oil pipelines and hydraulic systems which have high requirements for pipelines.

Provided is a method for enhancing anti-oxidative ability, anti-bacterial ability, anti-inflammatory ability and / or anti-allergic ability of a textile. The method comprises adding a cannabidiol in an alginate fiber comprising cannabidiol, wherein the textile comprises a yarn comprising the alginate fiber comprising cannabidiol, the alginate fiber comprising cannabidiol comprises the cannabidiol and an alginate, and the cannabidiol disperses in the alginate fiber comprising cannabidiol.

This invention discloses an electro-welding protective glove and its preparation method. The method comprises: S1, selecting raw materials; S2, preparing a refined terephthalic acid / graphene oxide / ethylene glycol modified slurry; S3, esterification reaction; S4, condensation reaction; S5, heating and melting the modified graphene oxide flame-retardant polyester masterbatch, then spinning it into a bundle; S6, weaving the obtained graphene oxide flame-retardant polyester filament into a woven fabric; S7, preparing a flame-retardant agent finishing solution, immersing the fabric into the finishing solution, then drying it; S8, according to the glove template, cutting and sewing the obtained fabric. This invention also provides an electro-welding protective glove prepared by the method. The method provided by this invention is simple and suitable for electro-welding and other fields, and can effectively protect human safety.

The present invention discloses a synthetic leather virgin fiber melt extrusion device and a method for use, belonging to the technical field of spinning machines, comprising a housing, an injection tube installed on the left side of the housing near the upper end, a transmission pipe installed on the right side of the housing near the lower end, a spinneret installed on the right end of the transmission pipe, and a filter cartridge installed inside the housing. The present invention can achieve dynamic change of the filter area by driving the filter cartridge to rotate through a motor, thereby effectively reducing the possibility of filter hole blockage, ensuring the uniformity of the filtration process, and avoiding excessive blockage of the local filter area. When the filter cartridge rotates, the touch block is used to touch the touch switch, instantly controlling the electromagnet to drive the cleaning needle to automatically clean impurities and small bubbles in the filter hole. The vibration force during cleaning is then used to promptly expel small bubbles, thereby avoiding the problem of bubbles passing through the filter hole due to pressure deformation, causing spinning interruption.

The invention discloses airflow stretching auxiliary drying coupling type PVA blow spinning equipment, which belongs to the technical field of spinning and comprises a base, a blow spinning box is arranged at one end of the top of the base, a support is arranged at the other end of the top of the base, and spinning forming drying mechanisms are uniformly arranged at the top in the blow spinning box along the circumferential direction. The stirring mechanism and the solution conveying mechanism are linked through the driving mechanism, the solution conveying mechanism can be matched with the filtering mechanism to form a negative pressure environment when working, rapid filtering and purifying of the PVA solution are achieved, manual transferring or additional filtering power devices are not needed, and the whole process comprises the steps of raw material mixing, heating and dissolving, solution storage and filtering and purifying; the whole process is completed in an integrated linkage mode, manual intervention links are greatly reduced, operation complexity is lowered, pollution and gel risks in the solution transferring process are avoided, the automation degree and production efficiency of equipment are remarkably improved, and meanwhile energy consumption is saved.