308 results about "Flexible fiber" patented technology

The invention discloses a TBM cutterhead blockage early warning system based on distributed temperature measurement, and belongs to the technical field of mechanical engineering, a multi-modal data fusion unit comprises an integrated multi-source sensor module and a data fusion analysis module, the integrated multi-source sensor module adopts a bionic cobweb topological structure to arrange a flexible fiber grating sensor, and the data fusion analysis module adopts a data fusion analysis module to analyze the flexible fiber grating sensor. The data fusion analysis module carries out fusion processing on multi-source data through a machine learning algorithm and constructs a multi-modal data input layer, and the data fusion analysis module also designs dynamic weight distribution through a process scheduling algorithm. A bionic cobweb topological structure is adopted to arrange the flexible fiber grating sensor, the strain self-compensation characteristic of the flexible fiber grating sensor is utilized to adapt to cutterhead deformation, a machine learning algorithm is utilized to fuse multi-source data, a multi-modal data input layer is constructed, dynamic weight distribution is achieved through a process scheduling algorithm, and the cutterhead deformation detection accuracy is improved. The problem of data islands of a traditional single sensor system is solved, and the monitoring precision and adaptability are improved.

A fiber-optic light guide is provided. The light guide includes plurality of optical fibers and an enveloping material. The plurality of optical fibers define a flexible fiber bundle. The flexible fiber bundle has a first diameter and a length along a longitudinal axis. The enveloping material encloses the plurality of optical fibers at one end of the flexible fiber bundle and over at least a part of the length to define a rigid portion. The plurality of optical fibers in the rigid portion are fused with one another. The flexible fiber bundle has a modified or formed cross-sectional geometry in a region of the enveloping material.

The present disclosure relates to non-flexible composite insulation materials comprising a metal oxide matrix reinforced with a fibrous material embedded therein. Specifically, the present disclosure relates to use of the non-flexible composite insulation materials for thermal batteries and the like. The non-flexible composite insulation materials with low thermal conductivity provided herein is capable of meeting the mechanical requirements for thermal battery design yet provides improved handleability compared to the commercially available insulators.

The invention relates to an electrofluid-driven deformable flexible fiber pump and a manufacturing method, the flexible fiber pump comprises a flexible pump body, a three-dimensional electrode module and an external voltage driving control unit, the flexible pump body is made of a thermoplastic plastic material, and the whole flexible pump body is of a hollow tubular structure; the three-dimensional electrode module comprises a polytetrafluoroethylene film and electrodes, and the electrodes comprise a positive electrode and a negative electrode; the polytetrafluoroethylene film is fused with the inner surface of the flexible pump body, the external voltage driving control unit is electrically connected with the positive electrode and the negative electrode, and the manufacturing method mainly comprises the steps of electrode printing, electrode winding and thermoplastic forming. Compared with the prior art, the electrode has the advantages that a planar electrode structure is converted into a three-dimensional structure through winding, so that the integration of the electrode is enhanced, and the application range of the three-dimensional electrode design is widened; and the shapes of the three-dimensional electrode module and the flexible pump body are fixed while heating, so that the electrode can adapt to the change of the shape of the pump, and the flexible deformation capability of the pump is improved.

The invention discloses an organoid culture and flexible fiber sensor integrated platform and a construction method and application thereof. The integrated platform comprises a flexible template, a flexible frame body and a flexible fiber sensor, a culture chamber is formed by the flexible template and the flexible frame body; the flexible fiber sensors are arranged close to the side wall of the culture chamber, and the flexible fiber sensors comprise two types, one type is obtained through self-contraction, and the other type is obtained through twisting after self-contraction. The constructed integrated platform can reproduce the structure of the heart and the mechanical microenvironment of the heart in vitro, meanwhile, simultaneous monitoring of organoid mechanical-chemical signals is achieved in the myocardial beating process, and the limitation that existing organoid mechanical-chemical signals are difficult to synchronize and obtain in real time is broken through.

The invention discloses a flexible damping noise reduction composite material and application thereof, and relates to the field of damping materials. Efficient absorption of broadband noise is achieved through the design of a double-layer gradient structure of the flexible damping noise reduction composite material. According to the outer layer, carbon fibers and polyester fibers are woven in a three-dimensional mode to form a compact network, and micron-sized modified paraffin phase change microcapsules are embedded into the compact network; in the inner layer, a loose framework is constructed by basalt fibers and polyester fibers, coarse supporting fibers are combined with flexible fibers, and nano silicon dioxide aerogel is loaded. Due to the double-layer synergistic effect, the sound absorption coefficient of the composite material in the full frequency band is improved, the tensile strength is improved, and the composite material has the characteristics of high strength, broadband noise reduction and temperature self-adaption. According to the invention, the noise of the emergency diesel generator or the electric emergency generator car can be reduced to the maximum in all directions, and the emergency diesel generator or the electric emergency generator car can be protected in severe environments such as wind, rain, snow and the like. The damping material prepared by the invention has the effects of high strength and noise reduction.

The invention belongs to the technical field of flexible aqueous secondary batteries, and discloses a bending-resistant and long-life flexible fibrous aqueous zinc-iodine battery and a preparation method thereof. The invention aims to solve the problems of structural damage of the fiber battery in bending, charging and discharging processes and side reaction of a fiber zinc negative electrode. The battery comprises a flexible fiber zinc negative electrode, a hydrogel electrolyte and a flexible fiber positive electrode, the fiber zinc negative electrode is immersed in an aqueous solution of sodium alginate and polyacrylamide to be coated with a layer of pre-gel solution, and then the fiber zinc negative electrode is immersed in an aqueous solution of zinc salt to form the hydrogel electrolyte in situ; then, after the zinc negative electrode coated with the gel electrolyte and the iodine-containing fiber positive electrode are twisted, a layer of gel electrolyte is prepared to wrap an electrode, and finally, silicon rubber is used for wrapping to complete preparation. The material has long cycle life and excellent bending resistance, the capacity retention ratio is 90% after circulation for 3500 times under the current density of 5C, and the capacity retention ratio is still 80% after bending for 3000 times under the bending radius of 12mm and the bending angle of 90 degrees.

The invention relates to the technical field of textiles, in particular to functionalized magnetic fiber cloth and a preparation method thereof. The preparation raw materials at least comprise flexible fiber cloth, magnetic nanoparticles and metal or a compound thereof. The flexible fiber cloth is sequentially subjected to amino surface modification treatment and carboxyl surface modification treatment; the magnetic nanoparticles are subjected to amino modification treatment. According to the invention, dopamine and polyethyleneimine are respectively used for modifying flexible fiber cloth and magnetic nanoparticles under the condition of oxidative polymerization, then the amino-modified fiber cloth is converted into carboxyl-modified fiber cloth by using Schiff base reaction, and the carboxyl-activated fiber cloth is coupled with the amino-modified magnetic nanoparticles, so that the magnetic nano-composite material is obtained. And finally, depositing metal or a metal compound on the magnetic fiber cloth by a chemical deposition method, so as to obtain the composite fiber fabric with good conductivity, magnetism and light absorptivity.

The invention discloses a three-dimensional high-speed background schlieren experiment table based on a flexible optical fiber bundle. The three-dimensional high-speed background schlieren experiment table comprises a high-speed camera, the flexible optical fiber bundle, an imaging lens, a background plate, a direct light source, a four-degree-of-freedom sliding block, a sliding rail and a jet device, wherein the sliding rail is a circular sliding rail; the four-degree-of-freedom sliding block is placed on the sliding rail; the jet device is placed in the center of the slide rail and used for generating a to-be-measured target flow field; one end of the flexible fiber bundle is a mother fiber, the other end is a plurality of son fibers, and optical signals of the son fibers are transmitted to the mother fiber through fiber filaments; each sub-optical fiber corresponds to one group of imaging lenses, one group of background plates, one group of direct light sources and one group of four-degree-of-freedom sliding blocks, so that an independent imaging unit is formed; the high-speed camera is used for collecting optical signals of the mother fiber. By combining the flexible optical fiber bundle and the imaging lens, three-dimensional background schlieren measurement of the single high-speed camera is achieved, and the problem that a three-dimensional high-speed background schlieren measurement system is too complex in operation is solved.

The invention belongs to the field of synthesis of luminescent materials, and relates to a preparation method and application of a zero-dimensional manganese-based hybrid halide nanofiber membrane with reversible photoluminescence and radiation luminescence conversion. The synthetic route is as follows: preparing a precursor from 4-dimethylaminopyridine (DMAP) and hydrochloric acid, then synthesizing zero-dimensional organic-inorganic metal chloride with manganese chloride hydrate (MnCl2. 4H2O) and anhydrous manganese chloride (MnCl2), further mixing the zero-dimensional organic-inorganic metal chloride with polyvinylidene fluoride (PVDF), and performing electrostatic spinning to obtain a nanofiber film; compared with the prior art, the stimuli-responsive reversible PL switch flexible fiber membrane prepared by adopting an electrostatic spinning technology has excellent stability and PL switch performance, and can show efficient PL and RL switching under external stimuli. Meanwhile, the flexible nanofiber film produced by the method has the advantages of one-step synthesis, quick response, repeatability, good portability and low cost, so that the flexible nanofiber film becomes a new application of molecular-level dynamic photonic devices for data storage, information security, optical logic gates, flexible X-ray imaging and the like.

The invention provides a zinc metal self-repairing high-performance fibrous flexible aqueous zinc battery and a preparation method thereof, the battery comprises a positive electrode, a zinc negative electrode and a hydrogel electrolyte, the positive electrode and the zinc negative electrode are in a flexible fibrous shape, and the zinc negative electrode is spirally wound outside the positive electrode; the hydrogel electrolyte contains an adsorption type additive, and at least part of the hydrogel electrolyte is arranged between the positive electrode and the zinc negative electrode. The one-dimensional fibrous battery provided by the invention is suitable for weaving and manufacturing wearable electronic fabrics, the flexible fibrous positive electrode and the flexible fibrous zinc negative electrode have good deformation freedom and bending performance, and the hydrogel electrolyte containing the adsorption type additive can be preferentially adsorbed on the surface of the zinc negative electrode when the zinc negative electrode is bent to generate mechanical cracks, so that the mechanical cracks are prevented from being generated. The molecular concentration field distribution and Helmholtz layer components on the surface are changed, and the surface defects are repaired in real time, so that zinc ions are uniformly deposited on the surface of the zinc negative electrode, the formation of dendritic crystals is inhibited, and the cycle performance of the battery is improved.

The invention discloses a flexible nylon yarn composite fiber membrane with a heat and humidity management function and a preparation method of the flexible nylon yarn composite fiber membrane, and belongs to the technical field of radiation cooling heat and humidity management materials. According to the preparation method, a silk fibroin (SF) solution and a nylon 66 (PA66) solution are mixed according to a certain proportion to prepare a precursor solution, and the PA66-SF composite fiber membrane is prepared by adopting an electrostatic spinning process. By introducing the PA66, the defect that the reflectivity of an ultraviolet region of an SF fiber membrane is low due to the inherent absorption characteristic of protein is effectively improved, the mechanical property of the SF fiber membrane can be remarkably improved, and the fiber membrane has excellent dry flexibility and wet stability. The preparation method provided by the invention is simple and convenient to operate, and the prepared flexible fiber membrane material has a temperature-humidity collaborative management function and is wide in application prospect.

The invention belongs to the technical field of flexible fiber washing and conveying analog simulation, and relates to a flexible fiber fluid-solid coupling method, which comprises the following steps of: firstly, respectively constructing a fluid model containing flexible fibers and a flexible fiber model; constructing a bidirectional fluid-solid coupling system based on the flexible fiber model and the fluid model; then carrying out analogue simulation and physical experiment on the motion evolution form of the single flexible fiber in the flow field by utilizing a bidirectional fluid-solid coupling system, and proposing evaluation indexes of the flexibility of the flow field of the flexible fiber and the vibration amplitude of the flow field of the flexible fiber; and finally, correcting the flexible fiber fluid-solid coupling model through evaluation indexes, and further exploring bending, winding, entanglement clustering and opening conditions of the flexible fibers. According to the flexible fiber fluid-solid coupling method, simulation of motion evolution behaviors of the flexible fibers in a flow field can be effectively achieved, and good expansibility and adaptability are achieved.

The invention discloses a soft-hard segment staggered fiber type flexible strain sensor and a preparation method thereof.A coaxial wet spinning technology is adopted to prepare thermoplastic polyurethane coated polyvinylidene fluoride (TPU coated PVDF) core-sheath structure fibers, and an ultrasonic impregnation method is utilized to load multi-walled carbon nanotubes (MWCNTs) on the surfaces of the fibers; or blending ionic liquid (ILs) in the TPU matrix to construct a conductive path. Subsequently, a core-sheath structured fiber having a "soft-hard" segment is formed by prestretching. And finally, coating two ends of the fiber with conductive silver paste as electrodes to prepare the flexible fiber type strain sensor. Through the soft-hard structural design, the sensitivity of the flexible fiber type strain sensor is greatly improved while the wide strain response range is kept, and the preparation method of the flexible fiber type strain sensor is simple and efficient.

The invention provides a composite plugging agent and application thereof. The composite plugging agent comprises elastic particles, rigid particles, flexible fibers and a rigid sheet material. The elastic particles comprise an inorganic filler and a polymer with a structural formula as shown in a formula I; # imgabs0 # R1 is-CONHC (CH3) 2CH2SO3Na or-COONa, and the number of the COONa and the number of the CH2SO3Na and the number of the COONa R2 is at least one of-CONH2,-CON (CH3) 2 and-CON (CH2CH3) 2; r < 3 > is-CONHCH2NHCO <->; m, n, o, p and q are the amount of substance of each monomer unit, and the ratio of m, n, o, p and q is (0.001-0.002): (0.1-0.2): (0.06-0.1): (0-0.08): (0-0.06).

Systems for reinforcement of structural elements such as piles, posts, pillars, and pipes are disclosed. The present invention features reinforced structural elements. The reinforced structural elements may include a sleeve structure positioned around a length of the structural element such that there is a chamber between the structural element and the sleeve structure. This chamber may be filled with concrete or another core filler material so as to reinforce the structural element. The sleeve structures of the present invention may be formed by the assembly of multiple staggered segmented layers of coupled reinforcing shells such as rigid, semi-rigid, or flexible fiber-reinforced shells.

The invention belongs to the technical field of new energy materials and lithium ion batteries, and relates to a PVDF-HFP / LLZO composite solid electrolyte membrane, a preparation method and application of the PVDF-HFP / LLZO composite solid electrolyte membrane in a flexible electronic device. The composite solid electrolyte membrane disclosed by the invention comprises a matrix formed by PVDF-HFP (Polyvinylidene Fluoride-Hexafluoropropylene) nanofibers and LLZO (Likelike Likelike Zinc Oxide) particles, and a three-dimensional network structure formed by crosslinking DVB (Divinylbenzene) in the matrix, wherein SDS (Sodium Dodecyl Sulfate) is adsorbed on the surfaces of the LLZO particles. A flexible fiber scaffold structure is constructed through an electrostatic spinning process, and sodium dodecyl sulfate (SDS) is introduced into a precursor to carry out interface regulation and control treatment on the surface of an inorganic filler LLZO, so that the dispersity and wettability of the inorganic filler LLZO in a polymer matrix are improved; meanwhile, divinylbenzene (DVB) is introduced as a cross-linking monomer, and in-situ construction of a three-dimensional network structure is realized under a heat treatment condition, so that the mechanical stability and ionic conductivity of the membrane material are remarkably improved.

Systems for reinforcement of structural elements such as piles, posts, pillars, and pipes are disclosed. The present invention features reinforced structural elements. The reinforced structural elements may include a sleeve structure positioned around a length of the structural element such that there is a chamber between the structural element and the sleeve structure. This chamber may be filled with concrete or another core filler material so as to reinforce the structural element. The sleeve structures of the present invention may be formed by the assembly of multiple staggered segmented layers of coupled reinforcing shells such as rigid, semi-rigid, or flexible fiber-reinforced shells.

The invention provides an integrated flexible optical fiber sensing device and an in-vivo sensing method thereof, and belongs to the technical field of crossing of intelligent sensing and additive manufacturing. Comprising two fixing mechanisms which are arranged in parallel and at an interval and used for being fixed to the surface of a detected structure, and first caulking grooves are correspondingly formed in the end faces of the two fixing mechanisms; the elastic base body is arranged in the area between the two fixing mechanisms and arranged in a bent shape, a second caulking groove is formed in the end face of the elastic base body, and the second caulking groove is further communicated with the first caulking grooves in the two fixing mechanisms; the metalized optical fiber is sequentially embedded in the first embedding groove and the second embedding groove, and FBG fiber gratings are arranged at the two ends, located in the first embedding groove, of the metalized optical fiber; the metalized optical fiber, the two fixing mechanisms and the elastic base body are integrally formed. Metal 3D printing processing is adopted to improve the manufacturing efficiency, optical fiber metallization and an optical fiber-metal integrated forming process are combined, rigid connection of the optical fiber and the metal matrix is achieved, and heat resistance and operability are improved.

The present invention discloses a fiber-type flexible strain sensor with interlaced soft and hard segments and a preparation method thereof. The invention adopts a coaxial wet spinning process to prepare thermoplastic polyurethane-coated polyvinylidene fluoride (TPU@PVDF) core-sheath structure fiber, and utilizes ultrasonic impregnation to load multi-walled carbon nanotubes (MWCNTs) on the fiber surface, or blends ionic liquids (ILs) in the TPU matrix to construct a conductive path. Subsequently, a core-sheath structure fiber with "soft-hard" segments is formed by pre-stretching. Finally, conductive silver paste is coated on both ends of the fiber as electrodes to obtain a flexible fiber-type strain sensor. Through the "soft-hard" structural design, the present invention makes the flexible fiber-type strain sensor have a greatly improved sensitivity while maintaining a wide strain response range, and its preparation method is simple and efficient.

The invention discloses a preparation method and application of a graphite / PDMS-based flexible spinning fiber sensor. Comprising the following steps: mixing graphite flakes and a PDMS liquid prepolymer, and carrying out ultrasonic stirring; adding a curing agent, continuing ultrasonic stirring uniformly, putting into a vacuum drying oven, standing and defoaming to obtain a spinning solution, putting into an injector, injecting the spinning solution into a coagulating bath through an injection pump to obtain a flexible spinning fiber, immersing into xylene, performing swelling treatment, and then drying; silver wire electrodes are pasted to the two ends of the flexible spinning fiber through conductive adhesive, the silver wire electrodes are wrapped with thermoplastic pipes, and the flexible fiber sensor is obtained; and carrying out cyclic stretching on the flexible fiber sensor by adopting an electronic fatigue testing machine, collecting the resistance in the cyclic stretching process, and stopping cyclic stretching after the resistance reaches a stable state, so as to obtain the graphite / PDMS-based flexible spinning fiber sensor. The sensor is large in sensing strain range and high in sensitivity.

The invention discloses a traditional Chinese medicine tea drink formula helpful for slimming and softening waist, and relates to the technical field of traditional Chinese medicine tea drinks. Comprising 35-70 parts of a softening and firming compound and 3-6 parts of a seasoning raw material, the flexible fiber firming compound is prepared from a basic shaping group, a tendon-softening and collateral-activating group and an active plant extraction group through a three-order synergistic conversion process, wherein the basic shaping group accounts for 60%-70% of the total weight of the compound, the tendon-softening and collateral-activating group accounts for 20%-25% of the total weight of the compound, and the active plant extraction group accounts for 10%-15% of the total weight of the compound; the three-stage synergistic conversion process is specifically a process for cooperatively treating the raw materials through three stages of gradient extraction, enzymolysis and fermentation in sequence. According to the invention, the fiber-softening and skin-firming compound element is arranged, so that multiple effects of reducing fat, shaping, softening tendons, activating collaterals, firming and nourishing skin and the like can be considered, and the problems that in the prior art, the formula raw material combination is single, only one-dimensional conditioning is focused, and the applicable crowd is limited are solved; meanwhile, collaborative conditioning on complex problems such as waist fat accumulation, fascia stiffness and unsmooth qi and blood can be achieved, and the overall improvement effect is improved.

The present application belongs to the field of thermal insulation materials, and particularly relates to a flexible fiber paper and a preparation method thereof and a fire-resistant cable wrapping material. The flexible fiber paper comprises first fibers which are porous silica fibers, and the diameter of the first fibers is 300 nm to 2000 nm, and the porosity of the flexible fiber paper is 85% to 99.6%. The flexible fiber paper has high flexibility, and no fold marks are generated after 500 times of 180-degree bending, and the flexible fiber paper has high thermal insulation performance.

The invention provides a preparation method of a fiber-based driver, the fiber-based driver is prepared by twisting thermally-induced driving fibers, and the thermally-induced driving fibers comprise a first component with thermal shrinkage performance and a second component with thermal expansion performance; the first component and the second component are subjected to parallel spinning to obtain the thermally-induced driving fiber. Through the mode, the driving fiber which can be twisted at a certain temperature can be obtained by utilizing the thermally induced deformation performance of the first component and the second component; under the twisting condition, the driving fiber is processed into the fiber-based driver, so that the deformability and flexibility of the driving fiber can be well reserved by the fiber-based driver, and the thermotropic deformation response performance of the driving fiber in the twisting process can be further enhanced; therefore, the flexible fiber-based driver with the characteristics of high sensitivity and wide temperature response is prepared.

The application provides a ceramic-based aerogel and a preparation method, and belongs to the technical field of aerogel materials. The ceramic-based aerogel takes hollow structure, alumina flexible fiber with good flexibility and porous powder as main raw materials, and can generate fiber gel in situ under the action of a catalyst, so that the flexibility of the ceramic-based aerogel is improved, the thermal conductivity is greatly reduced, the ceramic-based aerogel has good heat absorption effect and excellent fireproof and heat insulation performance, and has good heat insulation effect in low-temperature and high-temperature fields. The synergistic effect of the alumina flexible fiber and the silicon dioxide aqueous solution can enhance the mechanical strength and flexibility of the ceramic-based aerogel, and improve the mechanical ability. The use of a surface treatment agent can enable the ceramic-based aerogel to have good waterproof ability. The synergistic effect of the alumina flexible fiber with low thermal conductivity and the light shielding solvent can enable the ceramic-based aerogel to have better heat absorption effect and excellent fireproof and heat insulation performance. The preparation method has simple process and low cost, and is suitable for large-scale production.

The invention discloses an electrode and a manufacturing method and application thereof. The manufacturing method of the electrode comprises the following steps: S1, coating the surface of one side of the current collector with electrode slurry by adopting a wet process; s2, vertically immersing a pore-forming needle made of flexible fibers into the electrode slurry; s3, drying the electrode slurry; s4, when the liquid content in the electrode slurry is 5-10 wt%, pulling out the pore-forming needle, and after the electrode slurry is completely dried, forming an active material layer with vertical pores on the surface of the current collector; and S5, after the surface of the other side of the current collector is coated with electrode slurry, the steps S2-S4 are repeated, and the electrode is obtained. According to the method, the electrode with the straight hole structure can be efficiently formed, the production efficiency is greatly improved, the generated straight hole is flat, the service life of the battery is greatly prolonged, and the safety of the battery is greatly improved. After the hole is fully filled with electrolyte, the charging capability and the discharging power of the battery can be greatly improved.

The present invention relates to the field of intelligent construction, and provides a fiber filament braided reinforced concrete 3D printing device and method. A fiber braided reinforced concrete 3D printing device is arranged around the printing nozzle, including a fiber weaver fixator, a fiber mesh weaver, and a steel fiber implantor. The flexible fiber is woven into a fiber mesh by the fiber mesh weaver; the steps of the printing method include: connecting the numerical control wire of the fiber filament weaver to the printer, turning on the printing device and the fiber filament weaver. As the concrete strip is continuously extruded, the weaver will braid the fiber filaments into a fiber mesh, and at the same time insert the steel fibers into the fiber mesh and place the fiber mesh between the interlayer strips. The present invention is beneficial to enhancing the interlayer bonding strength of 3D printed concrete, making the bonding between layers more firm, and the printed concrete components have better toughness.

The invention provides a preparation method and application of a fluorescence sensor for detecting metal ions based on a metal organic framework packaged nano-cluster. The preparation method comprises the following steps: by taking flexible fibers as a base material, firstly coating the surface of the flexible fibers with a metal organic framework, and then soaking the flexible fibers coated with the metal organic framework in a polyethyleneimine-terminated nano-cluster solution, thereby obtaining the metal ion detection fluorescent sensor based on the nano-cluster packaged by the metal organic framework. The polyethyleneimine is utilized to improve the stability and the fluorescence property of the nano-cluster obtained by reduction, so that the fluorescence sensor can maintain the fluorescence property under different pH values and temperature conditions. The prepared fluorescence sensor can rapidly respond to existence of target ions, fluorescence signals change obviously and rapidly, toxicity is small, reproducibility is good, the lower detection limit is low, fluorescence quenching is conducted on metal ions, and sensitivity is high.

The invention discloses a production technology of a jute environment-friendly coir mat with a three-dimensional structure, and relates to the technical field of jute coir mat production.The production technology comprises the following steps that S1, raw material pretreatment is conducted, specifically, raw jute is sequentially subjected to three-stage degumming including anionic surfactant solution soaking, pectinase treatment, lignin peroxidase treatment and caustic soda boiling-off, performing countercurrent cleaning and vacuum drying to obtain flexible fibers; s2, mixing fibrils: mixing the pretreated jute fibers with palm fibers and ramie fibers in proportion to form a mixed fiber raw material; s3, opening and carding: performing loosening treatment on the mixed fibers by a bidirectional opener, and preparing flocculent fibers by a carding machine; the flocculent fiber filaments are sprayed to a lapping machine through an exhaust fan, the lapping machine reciprocates at the constant speed of 1.5-2.5 m / s in the direction perpendicular to the spraying direction, the fiber flexibility can be improved, a three-dimensional supporting structure can be constructed, and a formaldehyde adding source can be eliminated.

Methods include functionalizing, into a compressible pressure varying electrical conductance device, a portion of a compressible nonwoven material (CNM) cushion. A process includes forming within a three-dimensional (3D) target region of the CNM cushion a columnar distribution of non-solidified conductive polymer, and converting the columnar distribution of non-solidified conductive polymer into a columnar compressible pressure varying electrical conductance structure. The columnar distribution of non-solidified conductive polymer extends along a column axis. Forming the columnar distribution includes injecting into at least a portion of the 3D target region a liquid carrying conductive polymer in suspension. The columnar compressible pressure varying electrical conductance structure includes mutually separated masses of solidified conductive polymer respectively supported by mutually separated flexible fibers of the compressible nonwoven material. Optionally, forming the columnar distribution of non-solidified conductive polymer includes a first injection followed by partial drying, and a second injection.