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83 results about "Target fibers" patented technology
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Wool and cashmere identification algorithm based on gray level co-occurrence matrix model
ActiveCN105760877AAccurate Type JudgmentThe measurement results are objectiveCharacter and pattern recognitionEuclidean vectorTarget fibers
A wool and cashmere identification algorithm based on a gray level co-occurrence matrix model comprises an on-line identification process and a model learning process. The on-line identification process comprises the following steps: (1) taking an image of wool and cashmere fibers; (2) using a Gaussian filter to smoothly filter the image; (3) extracting a target from the image through canny-based edge detection and contour; (4) calculating the texture feature quantity, and using four statistical magnitudes, namely, contrast, energy, entropy, and correlation, to represent the texture; and (5) directly using an obtained feature vector as an input feature vector. The model learning process comprises the following steps: (1) accumulating a large number of wool and cashmere databases; (2) carrying out artificial labeling to make a machine clear about the type and location of a target fiber; (3) preprocessing and extracting the features of fiber images in the databases; and (4) adopting a three-layer artificial neural network. Through the algorithm, the type of fiber of wool and cashmere can be judged intelligently and accurately.
Owner:TIANFANG TIANJIN STANDARD TESTING TECH CO LTD +1
Fiber for detecting target and use thereof
InactiveUS20110201242A1Layered productsMaterial analysis by electric/magnetic meansTarget fibersPolymer
Provided is a fiber for detecting a target, a method of preparing the fiber for detecting the target, a method of detecting the target in a sample, a fiber complex including the fiber for detecting the target, and a kit including the fiber for detecting the target. The fiber may include a polymer, a target detecting material, and a metal nanoparticle, wherein the target material and the metal nanoparticle are fixed to the polymer. The method of preparing a fiber may include preparing a composition that includes a polymer, a target detecting material, and a metal nanoparticle and spinning the composition to prepare the fiber.
Owner:SAMSUNG ELECTRONICS CO LTD
Target fiber grating rheometer
InactiveCN101995485AThere is no hidden danger of electric sparksSimple structureFluid speed measurementGratingElectromagnetic interference
The invention relates to a target fiber grating rheometer, which has small measurement volume, high precision, good waterproof property and electromagnetic interference resistance, and can perform real-time monitor in different environments such as pipeline, crack and the like. The target fiber grating rheometer comprises a casing, one end of which is connected with a measurement joint and the other end of which is provided with an end cover; the end cover is equipped with a fixed metal sheet which is connected with a cantilever beam, the cantilever beam is provided with a measurement grating, the measurement grating is connected with fibers passing through the end cover; the end of the cantilever beam is provided with a metal target sheet arranged inside the measurement joint, and the cantilever beam is provided with a sealing device.
Owner:SHANDONG UNIV
Fabric softeners and treatment agents and methods of use thereof
InactiveUS20030236181A1Low costGood fluidityCationic surface-active compoundsOrganic detergent compounding agentsFabric softenerTarget fibers
Specific types of compounds that impart highly effective softening, antistatic, and ironability characterostics to and for various types of launderable fabrics (such as garments, tablecloths, draperies, and the like) through a rinse-cycle application within a standard machine laundering process are provided. Such compounds provide effective lubricity to target fibers as well as simultaneous static dissipative characteristics either alone or, as one preferred embodiment, in combination with other typical fabric softening agents. Such a composition comprising or method utilizing such compounds thus provides a relatively simple, yet highly effective manner of imparting these highly desired properties to fabrics. A fabric treated with such compounds or in accordance with this method is also provided.
Owner:MILLIKEN & CO
Winged electrode body for spinal cord stimulation
InactiveUS20060178718A1Eliminates and reduces disadvantage and problemEfficient couplingSpinal electrodesExternal electrodesElectrical conductorMedicine
An implantable stimulation system including epidural lead for spinal cord stimulation that includes a paddle having a curved proximal end and lateral winged tips and an array of electrodes coupled to conductors within a lead body. The conductors couple to a pulse generator or other stimulation device. The curved and winged paddle provides more complete electrical stimulation coverage to targeted human tissue by minimizing the potential gap between electrodes and targeted fibers.
Owner:ADVANCED NEUROMODULATION SYST INC
Method for automatically forwardly/reversely tapering fiber
ActiveCN103383477AGood repetition rateHigh degree of automationCladded optical fibreOptical waveguide light guideLinear dispersionOptical frequencies
The invention provides a method for automatically forwardly / reversely tapering a fiber. According to the method, the external envelope of a flame in a fiber heating area in the tapering process is calculated according to the shape of a target fiber, and reciprocating of a flame front is controlled, so that a tapered fiber conforming to a target shape is prepared. Post-treatment of a fiber waveguide is realized by constant-speed reciprocating heating of the dotted flame and simultaneous stretch or compression of two ends of the fiber, and the movement speed of the dotted flame front and the stretch / compression speed of the two ends of the fiber can be optionally adjusted in the forward / reverse tapering process. The linear dispersion characteristic and the nonlinear Kerr characteristic of the tapered fiber can be greatly changed. The tapered fiber can be efficiently and laterally coupled with an external environment. The properties are quite widely applied to fiber optics and a plurality of fields including fiber sensing, optical frequency conversion, super-continuum broadening, quantum optics and the like.
Owner:PEKING UNIV
Optical fiber line characteristic analysis apparatus and analysis method thereof
ActiveUS20140098362A1Inexpensive analysisReflectometers using simulated back-scatterMaterial analysis by optical meansTarget fibersVIT signals
A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.
Owner:NIPPON TELEGRAPH & TELEPHONE CORP
Multi-core fiber grating, fiber sensor, and manufacturing method of multi-core fiber grating
The embodiments of the invention provide a multi-core fiber grating, a fiber sensor, and a manufacturing method of the multi-core fiber grating, and relate to the technical field of fiber sensors. Themulti-core fiber grating comprises a plurality of fiber cores and a cladding, wherein the cladding is wrapped by the plurality of fiber cores; the target fiber core among the plurality of fiber coresis arranged at the center of the cladding; and when the plurality of fiber cores generate bending strain, the wavelength of each fiber core is provided with different strain response rules so as to measure the amplitude and the direction of the bending strain generated from the plurality of fiber cores. The multi-core fiber grating is simple in structure.
Owner:LASER RES INST OF SHANDONG ACAD OF SCI
Wool cashmere recognition algorithm based on Gabor wavelet analysis
ActiveCN105678341AImprove accuracyImprove recognition rateCharacter and pattern recognitionRecognition algorithmSvm classifier
The invention discloses a wool cashmere recognition algorithm based on Gabor wavelet analysis, and the algorithm comprises an online recognition flow and a model learning flow. The online recognition flow comprises the following steps: (1), taking an image of wool cashmere fibers (2), carrying out the smooth filtering of the image through employing a Gaussian filter, and achieving the image enhancement through the gray scale adjustment of the image; (3), extracting an image target through employing the edge detection and contour extraction based on canny; (4), extracting Gabor characteristics; (5), calculating a result. The model learning model comprises the following steps: (1), accumulating a large amount of wool cashmere data in a database; (2), determining the class of a target fiber and the position of the target fiber through manual marking; (3), carrying out the preprocessing and feature extraction of the fiber image in the database, wherein the step (3) is consistent with the steps (2) and (4) in the online recognition flow; (4), employing a two-class SVM classifier in a learning process. The method can achieve a high recognition rate, is quick in recognition speed, is high in accuracy of the recognition result, and is high in applicability.
Owner:TIANFANG TIANJIN STANDARD TESTING TECH CO LTD +1
Two-core optical splitter
Owner:XIAN JINHE OPTICAL TECH
Optimization method for process pressure of resin base composite equal thick laminate hot-press technology
InactiveCN101089754AEasy to operateImprove Simulation EfficiencySpecial data processing applicationsAdaptive controlManufacturing cost reductionPressure system
A method for optimizing pressure system of hot-pressing process for preparing resin based composite material and equal thick laminated board includes applying genetic algorithm and utilizing relationship G1 of resin flow to fiber tightness and relationship G2 of fiber born pressure to fiber volume fraction in resin based composite material hot-press forming analog unit to carry out optimization on pressure size and pressurizing opportunity based on temperature system for obtaining satisfied volume friction and distribution of object fiber.
Owner:BEIHANG UNIV
A method for detecting fiber distribution in mixed fiber products
The invention discloses a method for detecting the fiber distribution in a mixed fiber product. The method comprises the following steps: 1, collecting an original image of the mixed fiber product, and obtaining a low-noise gray scale image through denoising and gray scale transformation; 2, setting any fiber as target or non-target fibers; 3, cutting that image of the step '1' into small pixel maps, and selecting an appropriate threshold value to process the small pixel maps; 4, extracting that eigenvalue of the non-target fiber as noise, performing two-dimensional multi-level stochastic resonance on the image of the step '3', and extracting the target fiber accord to the result; 5, binarizing that image of the step '4', recombine the small images into the binarized images of the original size accord to the original cutting order, if the binarized images can display the target fiber outline, carrying out the next step, otherwise returning to the step '4'; 6, counting that number of target fib pixels of the restored image, and giving the fib distribution value of the mixed fiber product. By extracting the eigenvalues of the target and non-target fibers and by removing the non-target fibers to highlight the target fibers, the present invention has the advantages of simple operation and high processing accuracy.
Owner:TIANJIN POLYTECHNIC UNIV
High Q-factor conical optical microresonator and utilization in the location characterization of optical fibers
ActiveUS8860935B2Accurate local characterizationAccurate representationMaterial analysis by observing effect on chemical indicatorUsing optical meansWhispering galleryResonance spectrum
Owner:OFS FITEL LLC
Multi-parameter optical fiber sensing detection method and system of leading-down optical cable
ActiveCN111024283AFull visibility of physical statusSafe and reliable operation and maintenanceForce measurement by measuring optical property variationThermometers using physical/chemical changesEngineeringOptical fiber coupler
The embodiment of the invention provides a multi-parameter optical fiber sensing detection method and system for a leading-down optical cable. The method comprises the steps that a detection system sends a detection signal to a target fiber core in a to-be-detected leading-down optical cable; a distributed optical fiber sensor is arranged along the line of the leading-down optical cable to be measured, and an optical fiber Bragg grating sensor and a Fabry-Perot grating sensor are arranged in the cable trench respectively and are welded to a target fiber core through optical fiber couplers respectively; the detection system receives a spectral signal reflected from the target fiber core, and determines comprehensive parameters of the to-be-detected leading-down optical cable according to the spectral signal. According to the multi-parameter optical fiber sensing detection method and system for the leading-down optical cable, multiple parameters of the leading-down optical cable are detected in a mode of combining distributed optical fiber sensors and point type optical fiber sensors, the physical state of the leading-down optical cable is fully visible, the leading-down optical cable is protected, and safe and reliable operation and maintenance are achieved.
Owner:STATE GRID INFORMATION & TELECOMM BRANCH
Multifunctional anisotropic fiber, and preparation method using adverse solvent solidification
InactiveCN108950722AThe number of different sides is adjustableShape adjustableTransportation and packagingMixersPolymer scienceMicrometer
The invention provides a method and a device used for preparing multifunctional anisotropic fiber with an adverse solvent. According to the method, channel number is changed to obtain anisotropic fiber of different surface numbers; channel opening shell structure shape can be changed to obtain anisotropic fiber of different morphologies; a polymer solution is added into a receiving bath solution so as to obtain target fiber. Fiber collecting is carried out using pulleys, and a collecting device. No chemical or ultraviolet light curing is adopted, and continuous obtaining of fiber is realized.Water is taken as the adverse solvent to prepare fiber, especially the multi-surface anisotropic fiber, and micrometer grade fiber is provided with a plurality of functions. Experiment equipment is simple, assembling is convenient, the adopted materials are degradable, no pollution is caused by the adopted material, the preparation method is simple and green, preparation is rapid, size is uniform,and the application prospect of the multifunctional anisotropic fiber is promising.
Owner:NANJING FORESTRY UNIV
Preparation method of antistatic modified PBT fiber
ActiveCN105970340AImprove conductivityAntistatic EfficientElectroconductive/antistatic filament manufactureMonocomponent polyesters artificial filamentAntioxidantHeat resistance
The invention relates to fiber and preparation methods thereof, in particular to a preparation of antistatic modified PBT fiber. The preparation method includes following steps: (1), adding modified graphene, a nano metal compound and butanediol into a reaction kettle; (2), adding terephthalic acid and a catalyst into the reaction kettle of the step (1), and rising temperature of a system to 200-220 DEG C for reaction for 2-3 h; (3), adding an antioxidant and a stabilizer, vacuumizing, rising temperature to 250-280 DEG C, and performing polycondensation to obtain modified PBT polyester; (4), subjecting the modified PBT polyester obtained in the step (3) to fusion spinning and cooling, and treating to obtain the target fiber. The antistatic modified PBT fiber prepared by the method has efficient and lasting antistatic performance, nontoxicity, high heat resistance and washing resistance and stable performance and is suitable for various application fields.
Owner:仪征盛大纺织新材料有限公司
High Q-Factor Conical Optical Microresonator And Utilization In The Location Characterization Of Optical Fibers
ActiveUS20130176557A1Accurate representationAccurate local characterizationMaterial analysis by optical meansUsing optical meansWhispering galleryResonance spectrum
A conically tapered optical fiber with a small half-angle γ (e.g., less than 10−2) has been found able to support whispering gallery mode (WGM) resonances and can therefore be used to form a high-Q cavity. This finding has led to the ability to measure angstrom-level variations in the radius of an optical fiber by viewing the resonance spectrum at various locations where a sensor contacts an optical fiber being measured. An evaluation process is proposed where a microfiber sensor is brought into contact with a target fiber and the created WGM resonance is measured so that location radius variation can be characterized. The sensor is then removed from the target fiber and re-positioned to contact the fiber to another location to repeat the evaluation.
Owner:OFS FITEL LLC
Optical fiber line characteristic analysis apparatus and analysis method thereof
ActiveUS8928868B2Inexpensive analysisReflectometers using simulated back-scatterMaterial analysis by optical meansTarget fibersVIT signals
A test pulse is generated from a first and a second test light beam pulse with different wavelengths, with a predetermined time difference applied between the first and the second test light beam pulse. A circulator inputs the test pulse to a trunk fiber of a measurement target fiber line. A reflected light is extracted which is output from an input end of the trunk fiber. A filter extracts stimulated Brillouin backscattered light. A receiver receives and converts the scattered light into an electrical signal. A processing device carries out the signal to determine in which of N branched fibers the stimulated Brillouin scattered light is generated, while varying a time difference between the first and the second test pulse.
Owner:NIPPON TELEGRAPH & TELEPHONE CORP
Regulable dust-collecting, anti-static, and elastic sofa fabric and processing method thereof
InactiveCN106592063ASimple preparation processGood process repeatabilitySofasCouchesYarnCellulose acetate
The invention relates to a regulable dust-collecting, wear-resisting, and anti-static sofa fabric and a processing method thereof. Combined with a technological path of physical vapor deposition (magnetron sputtering) and processing compound of different yarn blending, the regulable dust-collecting, anti-static, and elastic webbing sofa fabric is manufactured. Specifically, the method comprises: under the action of electric filed force, Ar ions and electrons impacting a target material in high velocity, sputtering large amount of target material atoms, neutral target material atoms depositing on target fibers, and then blending the target fibers, CA (cellulose acetate), PU(polyurethane fibers) in different proportions, twisting to form yarns, and forming the textile sofa fabric through a weaving technology. The manufacturing process is simple, and is good in processing repeatability, and manufacturing of the regulable dust-collecting, anti-static, and elastic sofa fabric is realized, and requirement of market on the textile sofa fabric is satisfied. Technical method support for development of the environmentally-friendly and functional sofa fabric is provided.
Owner:JIANGSU SHENGDE INFORMATION TECH CO LTD
Coupling Arrangement for Non-Axial Transfer of Electromagnetic Radiation
ActiveUS20130188911A1Coupling efficiency is improvedLess negative effects on the optical characteristics of the target fiberLine/current collector detailsOptical fibre/cable installationCouplingIntermediate muscle fiber
A coupling arrangement according to the present invention comprises a target fiber, at least one feeding fiber and an intermediate fiber. The intermediate fiber comprises an input end and a converging taper portion, wherein the input end of the intermediate fiber is spliced to an output end of the feeding fiber in an axial way. Due to this coupling electromagnetic radiation being fed through the feeding fiber enters the intermediate fiber through its input end surface. The converging taper portion of the intermediate fiber is fused to the target fiber in the transfer region in a non-axial way. This leads to a non-axial coupling such that electromagnetic radiation, which entered the intermediate fiber through the input end surface thereof, is coupled into the target fiber.
Owner:LASER ZENT HANNOVER
Degradable fibers with good resilience and preparation method thereof
InactiveCN102586936ASolve the problem of fiber formationImprove ductilityArtificial filament heat treatmentMelt spinning methodsPolyesterPolymer science
The invention discloses a method for preparing degradable fibers with good resilience. The method comprises the following steps of: mixing components A, B and C in a mass ratio of 100:(1.5-10):(0.5-2.5), spinning by using melt spinning and coiling equipment to obtain primary fibers, and balancing, drawing and shaping to obtain blend fibers; and balancing the blend fibers again to obtain the target fibers. The fibers prepared by the method are biomass polyester-based elastic fibers, and a main component P(3HB-co-4HB) has high biocompatibility and biodegradability and is sourced from biofermentation but not petroleum, so that the fibers are green sustainable environment-friendly fibers. The elastic fibers are prepared by a melting spinning technology, non polyurethane fibers are prepared by a solution spinning technology, and organic solvents are not used in the production process to avoid environmental pollution.
Owner:DALIAN POLYTECHNIC UNIVERSITY
Degradable high-molecular drug-loading fibrous membrane used for repairing scars
The invention discloses a degradable high-molecular drug-loading fibrous membrane used for repairing scars. According to the invention, 0.01 to 5 parts of a scar repairing medicine by net weight are dissolved and dispersed in 100 parts of a biodegradable high-molecular material solution by weight, such that a mixed system is obtained. The mixed system is transferred into a spray liquid storing device. Through the altering of electrostatic spinning parameters, a haphazardly or directionally arranged target fibrous membrane is obtained. The electrostatic spun membrane provided by the invention has high porosity and good permeability, such that side-effects caused by poor permeability of a sealed membrane can be solved. The substrate material of the membrane is degradable high molecules. According to the invention, the medicine is sealed in the fibers, such that the stability of the structure of the medicine can be ensured; also, the medicine can be slowly released under the controlling of the degradation of the high-molecular material, such that the effect duration of the medicine is longer than that of traditional scar-repairing preparations or ointments. Further, the membrane can be cut into any required shape according to the dimension of a scar. Therefore, the membrane is easy to be customized and utilized.
Owner:SOUTHWEST JIAOTONG UNIV
Near field direct writing focusing and micro pattern separation method based on PEO electrospinning film substrate
The invention relates to the technical field of electrospinning direct writing, in particular to a near field direct writing focusing and micro pattern separating method based on a PEO electrospinningfilm substrate, according the method, the electrospinning substrate combining the PEO electrospinning film and an aluminum foil is used for realizing focusing of electrospinning direct-writing jet flows and non-destructive separation of a micro-pattern of an electrospinning material which is insoluble in water. The method comprises the following steps: firstly, spinning a layer of water-soluble PEO fiber membrane on a grounding metal substrate by an electrostatic spinning technology to prepare a composite electrospinning substrate, then using an electrospinning direct-writing technology to print the micro-pattern on the substrate, and finally, soaking the composite substrate together with the micro-pattern into a selected solution, the PEO can be dissolved, the micro-pattern cannot be dissolved, and at the moment, due to the fact that a material connected with the target fiber membrane and the substrate is dissolved, the micro-pattern is separated from the substrate. According to themethod, the self-focusing of electrospinning direct-writing and non-destructive separation of the electrospinning direct-writing micro-pattern and the metal substrate can be realized.
Owner:厦门定慧力教育科技有限公司
Method of measuring cut-off wavelength of optical fiber
InactiveUS20120262706A1Reliable lightingCladded optical fibreMaterial analysis by optical meansLength waveTarget fibers
A cut-off wavelength measuring method according to the present invention includes: preparing a single mode fiber as a reference fiber; preparing a measurement target fiber; adjusting the length of the single mode fiber such that the length of the single mode fiber is longer than the that of the measurement target fiber at the time of measuring power of transmission light and the reference fiber propagates only light of a base mode at a predicted cut-off wavelength of the measurement target fiber; measuring wavelength dependence of power of light transmitted through the reference fiber and wavelength dependence of power of light transmitted through the measurement target fiber; and calculating a cut-off wavelength of the measurement target fiber based on wavelength dependence represented as the ratio of the power of transmission light transmitted through the measurement target fiber to the power of light transmitted through the reference fiber.
Owner:THE FUJIKURA CABLE WORKS LTD
Coupling arrangement for non-axial transfer of electromagnetic radiation
ActiveUS9097853B2Coupling efficiency is improvedLess negative effects on the optical characteristics of the target fiberLine/current collector detailsCoupling light guidesCouplingIntermediate muscle fiber
A coupling arrangement according to the present invention comprises a target fiber, at least one feeding fiber and an intermediate fiber. The intermediate fiber comprises an input end and a converging taper portion, wherein the input end of the intermediate fiber is spliced to an output end of the feeding fiber in an axial way. Due to this coupling electromagnetic radiation being fed through the feeding fiber enters the intermediate fiber through its input end surface. The converging taper portion of the intermediate fiber is fused to the target fiber in the transfer region in a non-axial way. This leads to a non-axial coupling such that electromagnetic radiation, which entered the intermediate fiber through the input end surface thereof, is coupled into the target fiber.
Owner:LASER ZENT HANNOVER
Multi-layer weft-knitted spacer fabric for fire-fighting heat-insulating clothes
InactiveCN110696465AReduce the weight per square meterImprove thermal protection performanceChemical protectionHeat protectionYarnGlass fiber
The invention relates to a multi-layer weft-knitted spacer fabric for fire-fighting heat-insulating clothes. The multi-layer weft-knitted spacer fabric comprises a microporous aluminum foil, a reflecting film adhesion layer adhered to the microporous aluminum foil, a flame-retardant heat-insulating layer, a spacer layer, a moisture absorption conduction layer and a comfortable layer from outside to inside, wherein the reflecting film adhesion layer, the flame-retardant heat-insulating layer, the spacer layer, the moisture absorption conduction layer and the comfortable layer are formed by one-time weaving through a double-sided circular knitting machine, the reflecting film adhesion layer and the flame-retardant heat-insulating layer adopt a plating weaving mode, the moisture absorption conduction layer and the comfortable layer adopt a plating weaving mode, the spacer layer is connected to the two adjacent layers through a tucking mode, the spacer layer is made of glass fiber filaments, the moisture absorption conduction layer is made of aramid fiber and flame-retardant viscose blended staple fiber yarn, and the comfortable layer is made of flame-retardant viscose rotor spun staple fiber yarn. According to the invention, the multi-layer weft-knitted spacer fabric has a multi-layer structure, the targeted fibers are selected and woven, and the functions of each layer are completely achieved, so that the protective clothing is light, high in heat insulation and protection performance, capable of achieving the one-way wet conduction effect, and improves the comfort of wearers.
Owner:ZHEJIANG GANGLONG WEAVING TECH
Target fiber grating rheometer
InactiveCN101995485BThere is no hidden danger of electric sparksSimple structureFluid speed measurementCantilevered beamGrating
The invention relates to a target fiber grating rheometer, which has small measurement volume, high precision, good waterproof property and electromagnetic interference resistance, and can perform real-time monitor in different environments such as pipeline, crack and the like. The target fiber grating rheometer comprises a casing, one end of which is connected with a measurement joint and the other end of which is provided with an end cover; the end cover is equipped with a fixed metal sheet which is connected with a cantilever beam, the cantilever beam is provided with a measurement grating, the measurement grating is connected with fibers passing through the end cover; the end of the cantilever beam is provided with a metal target sheet arranged inside the measurement joint, and the cantilever beam is provided with a sealing device.
Owner:SHANDONG UNIV
Flexible nanofiber membrane with electromagnetic shielding and piezoresistive sensing performance and preparation method thereof
ActiveCN114150496AExcellent performance of flexible electromagnetic shieldingLow densityMaterial nanotechnologyShielding materialsSpinningElectrospinning
The invention discloses a flexible nanofiber membrane with electromagnetic shielding and piezoresistive sensing performance and a preparation method thereof, and belongs to the technical field of multifunctional material preparation. Firstly, a polymer nanofiber membrane is obtained through an electrostatic spinning process, then an MXene coated Fe3O4 dispersion liquid is prepared, then the polymer nanofiber membrane with good hydrophilicity is prepared through dopamine modification treatment, and a target fiber membrane is obtained in combination with a spraying process. Due to the excellent conductivity of MXene and the structural characteristics of nanofibers, a conductive network is formed, and the Fe3O4 nanoparticles cooperate with one another, so that the absorption of electromagnetic waves is further realized. The obtained fiber membrane has excellent electromagnetic shielding performance and sensing performance, and also has good mechanical flexibility. Due to the ultrathin, light and wearable properties and good mechanical properties, the nano-material can be used in textile industry, military field, artificial intelligence and daily protection, and is a novel nano-material with good application prospects.
Owner:JILIN UNIV
Data processing method, device and system
ActiveCN103546382ASave processing resourcesImprove data transfer efficiencyData switching networksFibre ChannelMedia access control
The invention provides a data processing method, device and system. As fiber channel identification of fiber channel nodes and medium access control addresses in the Ethernet are configured by address distributing equipment located in the Ethernet according to an IP broadcast protocol, when the first fiber channel code in the Ethernet requires communication interaction with the target node, a broadcast message comprising source fiber channel identification of the first fiber channel node and target fiber channel identification of the target node is sent, and when the first fiber channel code receives a response message comprising the first medium access control address, corresponding to the target fiber channel identification of the target node and being returned back by the second fiber channel node in the Ethernet, information to be transmitted is directly sent to the target node according to the first medium access control address. Accordingly, when the fiber channel nodes in the Ethernet conduct communication interaction, data forwarding is conducted not through an FCF, processing sources are saved, and data transmission efficiency is improved.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Device and method for preparing functional fibers
ActiveCN114182369AWon't happenAvoid influenceArtificial filament heat treatmentStretch-spinning methodsStructural engineeringMechanical engineering
The present invention relates to the technical field of functional fiber preparation, and provides a functional fiber preparation device and method, the functional fiber preparation device at least comprises: a hot drawing structure suitable for drawing a preform into a to-be-pressed fiber; the pressing structure comprises a pressing roller and a driving device, the surface of the pressing roller is provided with a micro-nano structure, and the feeding end of the pressing roller corresponds to the discharging end of the hot drawing structure; and the driving device is connected with the pressing roller and is suitable for driving the pressing roller to rotate so as to press the to-be-pressed fibers into target fibers with micro-nano structures on the surfaces. According to the preparation device of the functional fiber, the preform is subjected to wire drawing operation through the hot drawing structure, so that the fiber to be pressed is formed; and pressing the to-be-pressed fiber by adopting a pressing roller with a micro-nano structure on the surface so as to form a target fiber with a micro-nano structure on the surface. Waste gas and waste water are not generated in the preparation process, so that the influence on the environment is avoided.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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