16 results about "Spinning" patented technology

The invention relates to polyester conductive fibers and provides graphene conductive polyester fibers having good conductivity and lasting static resistance and a preparation method thereof. Through surface sulfonic acid group functionalization of graphene, graphene particles have sizes less than 1 micrometer and have good dispersibility, graphene, carbon nanotubes and a surfactant are stirred and mixed according to a mass ratio of 1-5: 1-5: 1-5: 1 and then are dispersed to form conducting particles, the conducting particles are added into polyester powder, the mixture is processed to form graphene superconducting masterbatches by a twin-screw granulation technology, and the graphene conductive polyester fibers are prepared by a spinning technology adopting a double-component composite spinning method or a single-component blending spinning method. The graphene conductive polyester fibers have the characteristics of simple production processes, low energy consumption, low labor and mass production feasibility.

The invention provides a composite silicon-based flame-retardant viscose fiber and a production method thereof, which belong to the field of viscose fibers. The composite silicon-based flame-retardant viscose fiber provided by the invention consists of the following components in part by weight: 13 to 28 parts of linear silicon-based flame retardant, 3 to 12 parts of auxiliary flame retardant, 2 to 8 parts of silane coupling agent and 52 to 82 parts of raw viscose. The composite silicon-based flame-retardant viscose fiber is obtained by preparing a composite silicon-based flame retardant solution and an auxiliary flame retardant solution, blending the composite silicon-based flame retardant solution, the auxiliary flame retardant solution and the raw viscose and performing conventional spinning, post-treatment, drying and packaging. By the composite silicon-based flame-retardant viscose fiber, the mechanical properties, heat resistance and flame retardance of a flame-retardant viscose fiber are improved; and by the preparation method, the problem of spinnability of the flame-retardant viscose fiber is solved.

The invention relates to a drying machine, in particular to an efficient drying machine for spinning. The efficient drying machine for spinning can thoroughly dry cloth and does not affect the quality of the cloth. According to the technical scheme, the efficient drying machine for spinning comprises supporting legs, a bottom frame, a supporting table, a first fixing frame, a first side support, an ironing workbench, a second side support, a vertical support, a first sliding rod, a driving mechanism and the like. The three groups of supporting legs are arranged under the bottom frame, every two supporting legs form a group and are uniformly and fixedly connected under the bottom frame, a groove is formed in one side of the bottom frame, and the supporting table is fixedly connected to the groove in one side of the bottom frame. The efficient drying machine for spinning has the advantages that before entering a drying unit for drying treatment, cloth enters a wringing and dewatering device for dewatering treatment, the dewatered cloth is ironed by an ironing mechanism, wrinkles on the cloth are removed through ironing, the cloth smoothly enters the drying unit, and the drying unit thoroughly dries the cloth.

The invention relates to a preparation method of a glowing nanometer fibre with the biocompatibility. The preparation method comprises the following steps of dissolving carbon nanometer particles in a solvent, adding a high molecular material under a stirring condition in the mass ratio of the high molecular material to the carbon nanometer particles being (0.5:1)-(1:2), and stirring for 1-3 hours so as to obtain a uniform spinning fluid ultimately; injecting a spinning liquid into a needle cylinder, regulating an electrostatic spinning technology, collecting a layer of uniform white fibres which are collected from a receiving aluminum foil; and putting the white fibres into a high-temperature pipe-shaped atmosphere furnace, inputting nitrogen, heating to 600-1000 DEG C, carrying out heat preservation for 1-5 hours, and finally cooling to the room temperature so as to obtain the glowing nanometer fibre containing the carbon nanometer particles. The obtained fibre has the good biocompatibility, meanwhile, the fibres have a glowing property, the glowing nanometer fibre is suitable for being used in a biomedical field, and the glowing nanometer fibre is particularly utilized as a bracket material and is convenient to anaphase observation. The preparation method provided by the invention is simple, the production cost is low, and the preparation method can further meet the production and application requirements.

The invention discloses a composite electrolyte material and a preparation method thereof and belongs to the technical field of lithium secondary ion battery electrolytes. Polymer fibers are prepared by an electrostatic spinning method, then silicon oxide/polymer composite fibers are prepared by a polycondensation method, and the silicon oxide/polymer composite fibers are soaked in an ionic liquid electrolyte for adsorption treatment to obtain the ionic liquid/silicon oxide/polymer fiber composite electrolyte material. A silicon oxide/polymer composite fiber material is used as a skeleton, has high adsorption space and adsorption efficiency, and can absorb a large amount of active ionic liquid components; the ionic liquid containing the lithium salt is used as an active liquid component for loading ionic conduction, has the characteristics of high ionic conductivity, non-volatility, non-flammability, chemical stability and the like, and is applied to a lithium battery system, so safety of the battery is effectively improved; the composite electrolyte material provided by the invention has high ionic conductivity and high thermal decomposition temperature, and meets the normal operation of the lithium secondary battery.

The invention discloses a zirconium hydroxide nanosheet/nanofiber composite membrane and a preparation method thereof. The composite membrane is of a hierarchical pore structure, wherein the zirconium hydroxide nanosheets are constructed at the surface confinements of the polymer nanofibers and are uniformly distributed on the surfaces of the polymer nanofibers; and the zirconium hydroxide nanosheet is in a zigzag form. The preparation method comprises the following steps: dissolving a high-molecular polymer in a solvent to prepare a high-molecular polymer solution; adding a zirconium source and an electrostatic spinning precursor solution; and injecting the mixture into an injector for electrostatic spinning to obtain a hybrid nanofiber membrane with uniform fiber diameter, infiltrating the hybrid nanofiber membrane with ammonia water, and heating for reaction. The preparation process is simple, environmentally friendly and energy-saving; the prepared super-soft self-supporting zirconium hydroxide nanosheet/nanofiber composite membrane has a hierarchical pore structure, super-strong moisture permeability and super-high air permeability, and has very strong adsorption and degradation capabilities on erosive chemical warfare agents and simulants thereof, and neurological chemical warfare agents and simulants thereof.

The invention discloses a high-connectivity polyvinylidene fluoride hollow fiber membrane and a preparation method thereof.The preparation method comprises the steps: making polyvinylidene fluoride and a single diluent fully heated and mixed to be uniform to obtain a membrane casting solution; extruding the membrane casting solution and the heated core solution through a spinneret plate, immersing the membrane casting solution and the heated core solution in coagulating bath water through air gaps for curing and shaping, and winding the membrane casting solution and the heated core solution on a spinning wheel to obtain a primary membrane; and extracting the primary membrane with ethanol to obtain a finished membrane. According to the invention, the mechanical property of the membrane is improved, the water flux of the membrane is improved, and the production cost is reduced; the membrane can be used in the whole industry of petroleum, chemical engineering, electric power, special wastewater and the like as well as municipal sewage treatment, drinking water treatment, membrane contactors and the like, and has a wide application prospect.

The invention provides direct-spun polyester colored staple fiber production equipment and a direct-spun polyester colored staple fiber production method. The equipment comprises a melt pipeline, a double-screw extruder, a dynamic mixer, a static mixer, a metering pump and a spinning box body, wherein the melt pipeline and the double-screw extruder are respectively connected by the same metering pump; the dynamic mixer is simultaneously connected with the melt pipeline and the double-screw extruder; and the static mixer, the metering pump and the spinning box body are sequentially connected with the dynamic mixer. Synthesized polyester melt is quantificationally distributed into two parts through the metering pump; one part enters the melt pipeline, and the other part enters the double-screw extruder; meanwhile, pigment powder and additives of the pigment powder are continuously added into the double-screw extruder to be primarily mixed with the polyester melt; colored melt in the double-screw extruder is re-injected into the melt pipeline to be mixed with the original blank polyester melt through a pressurizing pump; the mixture enters the dynamic mixer; the melt and the pigment are uniformly mixed, and are then further mixed through the static mixer; and the uniformly mixed colored polyester melt enters the spinning box body. By using the dynamic mixer, the pigment in the colored melt is uniformly mixed, the quality of the colored fiber is improved; and the use period of an assembly is prolonged.

The invention provides an electrostatic spinning nozzle structure based on the the capillary principle and an application method thereof. The electrostatic spinning nozzle structure comprises a liquid storage barrel and a flow dividing box installed at the top of the liquid storage barrel, wherein a flow guide cylinder is installed at the top of the flow dividing box; an inserting cylinder penetrating through the upper wall surface and the lower wall surface is arranged in the middle of the flow dividing box; a plurality of air outlet holes are formed in the top surface of the flow dividing box and communicate with the interior of the flow dividing box; an air supply pipe communicates with the side wall of the flow dividing box and is used for communicating with external high-pressure air supply equipment; the bottom of the liquid storage barrel communicates with a liquid supply pipe and a liquid discharge pipe; the pipe diameter of the liquid supply pipe is larger than the pipe diameter of the liquid discharge pipe; a volatilization structure is arranged in the flow guide cylinder; the bottom of the volatilization structure penetrates through the inserting cylinder and extends into the liquid storage barrel; the upper part of the volatilization structure is of a tree-shaped structure; and a plurality of sea urchin-shaped spray heads are installed on branches of the volatilization structure. The structure is novel, a needle-free structure is adopted, the application method is simple, the problem of spray head blockage can be prevented, the diffusion surface of a spinning solution can be effectively increased, and the yield and the quality of spinning fibers are improved.

The invention discloses a method for anaerobic fermentation of organic household garbage of villages and small towns and particularly relates to a method for applying an ammonia nitrogen adsorption film material to an anaerobic fermentation process. A method for preparing the ammonia nitrogen adsorption film material comprises the following steps: firstly, preparing a FeZn Berlin blue compound, then, dissolving polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF), carrying out stirring until the PAN is completely dissolved, then, adding the FeZn Berlin blue compound, and continuing to carryout stirring and uniform dispersing, so as to obtain an electrostatic spinning solution; and adding the electrostatic spinning solution into an injector of an electrostatic spinning machine, and carrying out spinning, thereby obtaining a FeZn Berlin blue/polyacrylonitrile composite nano-fiber film. The composite nano-fiber film is high in adsorption capacity to ammonia nitrogen, stable in performance and simple in preparation method and has great potential applications to ammonia nitrogen adsorption and ammonia inhibition removal in the anaerobic fermentation process of the organic household garbage of the villages.

The invention discloses a composite board with electromagnetic shielding performance and a preparation method thereof, and relates to the technical field of new materials. The preparation method comprises the following steps of firstly mixing aminated graphene oxide adsorbing copper ions with polypropylene; then carrying out dry spinning to obtain modified polypropylene fibers, carrying out suspension polymerization on styrene, benzoyl peroxide, hydroxyethyl cellulose, maleic anhydride, starch, potassium periodate and acrylic acid as main raw materials to obtain modified hollow microspheres; and finally, mixing the modified polypropylene fibers with carbon fibers, polyester and the modified hollow microspheres, carrying out carding and web forming to obtain a mixed fiber felt, and carrying out needling reinforcement and hot pressing treatment on the mixed fiber felt to obtain the composite board with the electromagnetic shielding performance. The prepared composite board with the electromagnetic shielding performance has excellent electromagnetic shielding performance and noise reduction performance, and is low in density and good in strength.

The invention discloses a manufacturing method of fluorescent denim yarns. The manufacturing method comprises manufacturing of fluorescent short fibers and composite fluorescent fiber strands and spinning of the fluorescent denim yarns. The method different from a conventional method is adopted in the manufacturing process of the fluorescent denim yarns, and the surface of a woven fabric or a fabric presents a leisure denim style under conventional sunlight shining and has a fluorescent effect under special lamplight. The fabric woven from the fluorescent denim yarns spun by the novel method is rough and natural in cloth cover, has the characteristics of freeness and randomness of denim and also has the fashion elements of casual shirts, the production process is simple, convenient, quick and environment-friendly compared with that of a conventional denim fabric, and the market feedback is quick; and meanwhile, fluorescent elements of the yarns can be shiny and dazzling in style under the illumination of a fluorescent lamp, and the yarns are common raw materials for clothes in entertainment venues, meet the current popular trend and requirements, and are deeply popular with the market.