1036 results about "Fiber bundle" patented technology

The invention discloses a preparation method of a natural fiber prepreg with an improved impregnation effect, and relates to the technical field of composite material preparation, the method comprises the following steps: carrying out synergistic modification through fiber surface plasma activation and silane grafting, and combining a gradient pressure-temperature coupling impregnation system and ultrasonic-assisted permeation to prepare the natural fiber prepreg with the improved impregnation effect. And gradient filling and interface chemical bonding strengthening of the resin in the fiber bundle are realized. The core process comprises the following steps: pretreating fibers to improve surface energy and roughness, introducing a reactive diluent and a block copolymer into a resin system to regulate and control viscosity and transport capacity, constructing a pressure gradient by a multi-stage compression roller to drive resin to permeate into a bundle core, promoting uniform impregnation by infrared temperature control and ultrasonic cavitation, and finally obtaining uniform resin distribution and porosity lt. The interlayer shear strength is gt; and the high-performance prepreg is stable in batch under the pressure of 45 MPa. Reliable technical support and process guarantee are provided for large-scale engineering application of the high-performance natural fiber composite material.

The invention discloses a method and a system for constructing a fiber scale parameterized model of a single-sided weft-knitted fabric, relates to the field of dynamic simulation of weft-knitted fabrics, and solves the problems that an existing knitted fabric simulation system only displays an embroidery pattern in a yarn scale or a fabric scale and lacks a three-dimensional dynamic effect based on a fiber level and the like. The method comprises the steps that the weft-knitted fabric is formed by mutually intermeshing coils, and the number and coordinates of coil control points are set; the simulation of different knitting effects is realized by adjusting the positions of coil control points; based on the single fiber curve model, using a random jitter algorithm to carry out modeling on the fiber bundle, and constructing an untwisted fiber bundle model and a twisted fiber bundle model; a branch model is constructed to simulate the hairiness form of the weft-knitted fabric, and dynamic regulation and control of hairiness characteristics are achieved by adjusting the number of breakpoints, the branch length range and the disturbance amplitude core parameters. Environment parameters are set, an OpenGL illumination function is used for representing the stereoscopic impression of the weft-knitted fabric model, and after the weft-knitted fabric model is rendered, the model is output.

The invention relates to the technical field of basalt fiber reinforced composite material pipelines and preparation methods thereof, and discloses a pipeline named as a basalt fiber reinforced composite material pipeline and a preparation method thereof and a preparation method thereof. The invention aims to overcome the defects of continuity, interface bonding and mechanical properties of the conventional basalt fiber reinforced composite material pipeline. The pipeline is composed of a lining layer, a basalt fiber winding reinforcing layer and an outer protective layer, the reinforcing layer is formed by compounding basalt fiber bundles subjected to surface treatment and a resin matrix, and the reinforcing layer is of a multi-layer structure with different winding angles. The preparation method comprises the following steps: roughening the inner lining layer, infiltrating and accurately winding the fiber bundles, performing multi-section curing and forming the outer protective layer. According to the scheme, the macroscopic mechanical property of the pipeline is remarkably improved, the interface combination of fibers and a matrix is optimized, the integrity of the fibers is kept, efficient preparation is achieved, and the pipeline has the advantages of being excellent in corrosion resistance and ultraviolet resistance, long in service life and the like.

The invention discloses continuous melt impregnation equipment based on dynamic pressure regulation, which comprises a rack, a fiber band cleaning mechanism and an impregnation mechanism are arranged in the rack, the fiber band cleaning mechanism comprises a driving assembly and two height adjusting assemblies, and the impregnation mechanism comprises a melt bath tank used for accommodating matrix resin in a molten state, the device comprises at least one heating device and at least one resin temperature sensor. The invention relates to the technical field of fiber compounding. According to the continuous melt impregnation equipment based on dynamic pressure adjustment, a precise servo linear actuator is combined with a force sensor and a displacement sensor, so that an impregnation pressure adjusting mechanism with high response and high precision is formed. The mechanism can adjust a roller gap with micron-level precision and respond to a control instruction with millisecond-level response speed, so that the real-time performance and accuracy of impregnation pressure adjustment are ensured, and the system can change according to different fiber bundle characteristics and resin viscosity.

The invention discloses a FeNi-C-CNTs-carbon fiber composite material and a preparation method and application thereof, and the preparation method comprises the following steps: (1) cutting carbon fibers into short fibers, dispersing the short fibers into fiber bundles, fixing the fiber bundles, and carrying out electrostatic dispersion; (2) spraying an adhesive on the surface of the dispersed carbon fiber to form an adhesive layer on the surface of the carbon fiber, and then pre-curing the adhesive; and (3) carrying out chemical vapor deposition by adopting a horizontal tube furnace and taking a mixture of ferric acetylacetonate and nickel acetylacetonate as a metal precursor. In the FeNi-C-CNTs-carbon fiber composite material, the FeNi alloy nanoparticles and the carbon nanotubes cooperatively construct a three-dimensional conductive network, wave absorbing mechanisms such as magnetic loss, dielectric loss and multiple scattering are strengthened by means of the unique structure, the wave absorbing performance is remarkably improved, the effective frequency band is widened, and the composite material has excellent microwave absorbing performance and structural stability.

The invention relates to a machine (1) and to a corresponding method for producing an air-laid fibrous web (309). The machine (1) comprises: a) a raw material preparation system for a low-water preparation of cellulose-containing fibers in order to form individual fibers and / or fiber bundles (209); b) a dry-forming device (4) for dry-forming the individual fibers and / or fiber bundles (209) in an air stream in order to form a flat fiber fabric (300) on a forming belt (40); c) an application device (71) for applying a fluid, preferably water and / or a water-additive mixture, to the fiber fabric (300); d) a solidifying device (8) for solidifying the flat fiber fabric (300) by applying pressure in a press nip (80) when the fiber fabric (300) is guided through the press nip (80) on a press belt (41) onto which the fiber fabric (300) was previously transferred from the forming belt (40) in a transfer region (100); and additionally a fluid depositing device which is designed to then deposit the fluid on the press belt (41), the press belt (41) serving as an application device (71) for applying the fluid to the fiber fabric (300).

The application relates to a UHPC material for a bridge expansion joint and a preparation method thereof, and comprises the following steps: S2, nanometer carbon fibers are stirred with residual silica fume in a premixing bin at high speed for 2 minutes, so that the silica fume wraps the nanometer carbon fibers and prevents electrostatic agglomeration; after premixing, the mixed powder is sequentially sent into a vortex chamber and an ultrasonic atomization cavity through compressed airflow, and the fiber flows through a piezoelectric ceramic array high-frequency vibration to make the fiber bundle dissociate into a single state; S3, the atomized fiber aerosol passes through a porous diffuser and is sprayed into a planetary mixer through a second feeding port at a certain angle to participate in the mixing in step S1; and S4, steel fibers are sent into a vibrating screening box, and the adhered steel fiber groups are separated through high-frequency vibration, and the separated steel fibers enter the planetary mixer through a third feeding port to participate in the mixing in step S1. The steel fibers and the nanometer carbon fibers uniformly distributed in the UHPC material form a double anti-cracking mechanism, and the impact toughness of the UHPC material is improved.

The invention relates to the technical field of solid waste treatment, in particular to a fan blade recycling system and method. The technical problem that in the prior art, fan blades are recycled through a mechanical crushing method, and consequently recycled reinforced fibers are short in length is solved. The invention provides a fan blade recovery system which comprises a crack forming device used for applying vibration and mechanical pulse with preset frequency to a fan blade so as to form microcracks on a resin interface between adjacent fiber layers in the fan blade; and the splitting device is arranged at the downstream of the crack forming device and is used for applying stripping composite stress to the fan blade, so that the fan blade is separated at the micro crack, and fiber bundles and resin matrix fragments are obtained.

The invention discloses a multi-station cooperative efficient production process for carbon fiber pipe automatic weaving, and the process comprises the following modules: a multi-dimensional tension monitoring module which is used for deploying a fiber grating sensor array along a fiber path, and collecting the axial / transverse tension data of a fiber bundle in real time; the environment compensation module integrates a temperature and humidity sensor and an air pressure monitoring device, and constructs an environment disturbance model according to the following specific formula: Finv = 0.05 deltaT + 0.03 deltaH + 0.02 deltaP; the dynamic regulation and control actuator adopts a micro-displacement platform driven by piezoelectric ceramics; and the intelligent decision control module is used for controlling the dynamic regulation and control actuator to carry out tension control by obtaining the measurement data of the environment compensation module and the monitoring data of the multi-dimensional tension monitoring module, and the control formula is G = 0.2 mu m / N. Through four innovations of multi-dimensional perception, environment compensation, high-speed execution and intelligent decision making, precision and self-adaption of carbon fiber tension control are achieved, and the method is particularly suitable for carbon fiber pipe production work with strict mechanical property requirements.

The invention relates to a nanometer enhanced intelligent monitoring silicone rubber cable and a preparation method thereof, and the cable comprises a conductor unit and a nanometer composite insulating layer which is extruded at the outer side of the conductor unit; the gradient shielding structure is sequentially arranged on the outer side of the nano composite insulating layer in a sleeving mode, the gradient shielding structure, the inner tinned monofilament braid layer and the middle aluminum-plastic composite heat insulation wrapping tape are bonded through a conductive adhesive layer, and fiber bundles of the outer basalt fiber braid layer are embedded into surface grooves of the middle aluminum-plastic composite tape to form a mechanical interlocking structure; the distributed sensing unit is embedded between the middle shielding layer and the outer shielding layer, and the outer sheath layer is extruded on the outer side of the gradient shielding structure. According to the invention, the problems of poor aging resistance, weak shielding and sensing distortion of a traditional cable are solved. The tensile strength retention rate after aging at 150 DEG C is greater than or equal to 85%, the electromagnetic interference attenuation is improved by 14dB, the signal distortion rate during bending is less than or equal to 5%, and the cable is suitable for intelligent monitoring in high-temperature, high-humidity and strong-corrosion environments.

The invention relates to the technical field of wire drawing devices, in particular to a wire drawing device for glass fiber production. Comprising a base; the first rack guide rail is connected to the side face of the base; the moving block is arranged on the side surface of the first rack guide rail; the rolling wheel is rotationally connected to the moving block, and the rolling wheel rolls in a groove in the first rack guide rail; the rotating rod is rotationally connected to the moving block; the first gear is connected to one end of the rotating rod, and the first gear is meshed with a tooth groove in the first rack guide rail; the first transverse pipe is connected to the side face of the movable block. A clamping mechanism composed of a moving block, a first transverse pipe, a moving clamping rod and a second transverse pipe is matched with a lead screw motor to drive the moving clamping rod to move in the opposite direction, a glass fiber bundle led out of a bushing can be automatically clamped, and then under driving of a first motor, the moving block moves along an oval track composed of a first rack guide rail and a second rack guide rail; and the fiber bundle is driven to bypass the godet wheel and is conveyed to the rotating cylinder.

Disclosed is a media for capturing carbon dioxide from a gas stream of ambient air or industrial exhaust. The media includes a fiber matrix having fine fiber strands formed from at least one first polymer capable of capturing carbon dioxide through absorbance or adsorbance. The fine fiber strands have a first mean diameter of 5000 nm or less. Further, the media includes a plurality of nodules dispersed in the fiber matrix, and the plurality of nodules are made from a nodule material capable of capturing carbon dioxide through absorbance or adsorbance. The media can be configured for use in a carbon capture element of a carbon capture cell disposed within a carbon capture system, such as a direct air or point source carbon capture system.

The invention discloses a multi-energy balance margin adaptive regulation and control method and device, and relates to the technical field of quantum computing crossover, and the method comprises the steps: carrying out the optimization of a four-dimensional input matrix through a quantum encoder, executing quantum annealing calculation to generate a ground state solution, integrating an inertia demand increment with the ground state solution through quantum bit entanglement, and carrying out the optimization of a four-dimensional input matrix; calculating a comprehensive inertia gap value, and generating a hierarchical scheduling instruction by adopting a dynamic threshold hierarchical strategy; and according to the hierarchical scheduling instruction, a topology reconstruction instruction is generated through a virtual inertia dynamic algorithm, dynamic monitoring is performed by applying multi-agent collaborative game optimization, and an intelligent regulation and control report is generated. After three-dimensional fault features and space-time dimensions of a multi-energy fluctuation ratio are aligned based on a dynamic time warping-covariance matching method, dynamic fusion is carried out on standard field phase fiber bundles by adopting aged-Simons topology weaving, and self-adaptive regulation and control of a multi-energy balance margin are realized.

The invention discloses solid waste treatment equipment for urban environmental protection, and relates to the technical field of waste treatment, the solid waste treatment equipment comprises a waste treatment group, and further comprises an anti-splashing fibrosis treatment conveying group, a uniformly distributed compression group and an adaptive deslagging filtering group; the roll shaft piece A and the roll shaft piece B are used for pressurizing / extruding the plant source waste in the transferring process; under the further treatment of the uniformly distributed compression group, the dual synergistic effect is achieved, and the compaction pain point is directly hit, so that the compaction quality and efficiency of the plant source waste are greatly improved; the roll shaft piece breaks vegetable long fibers through extrusion, and the possibility of cross winding of the fibers is preliminarily broken; the subsequent conical thorn pieces further pierce the residual fiber bundles, so that the fibers are prevented from being hooked again to form a'fiber arch frame '; meanwhile, the conical thorn piece can pierce a plastic bag / vegetable leaf wrapped with water, and a flexible supporting point is eliminated; and the materials are uniformly stressed in the compaction cavity through the mutual matching of the compaction cavity and the conditions of local overhead and non-uniform looseness are avoided.

The invention relates to a dynamic defense system and method for durability degradation of a reinforced concrete structure. The system comprises a composite fabric network pre-buried in the reinforced concrete structure, a sensing unit for monitoring the health state of the structure and a response control unit, the composite fabric network comprises conductive row fiber bundles and conductive column fiber bundles which are intercrossed and woven into a two-dimensional matrix skeleton and can be addressed independently; arranging a plurality of repairing microcapsules which adopt a specific sensitive polymer wall material to package a chemical repairing agent at cross nodes, and additionally arranging function execution assemblies at corresponding nodes according to requirements; and the response control unit applies an excitation signal exceeding a preset threshold value to the target node, and generates or triggers the function execution component to form a corresponding external excitation energy field to act on the sensitive polymer wall material of the repairing microcapsule, so that the sensitive polymer wall material is broken or subjected to phase change to release the chemical repairing agent. According to the method, the threat position, the threat type and the threat level can be accurately positioned, and the repair range and strength are dynamically adjusted.

The invention relates to the technical field of hollow fiber membranes, and discloses a preparation method of a dynamic MBR (membrane bioreactor) hollow fiber membrane component, which comprises the following steps: hollowly connecting an impeller framework with a rim pipe by using a connector to obtain an impeller type membrane component; a plurality of hollow fibers are cast into hollow fiber bundles, one ends of the hollow fiber bundles are cast on the reserved opening of the porous pipe sleeve of the impeller framework, the other ends of the hollow fiber bundles are bundled and cast on the hollow rim, and a blade type hollow fiber membrane assembly is prepared; connecting a hollow rim of the blade type hollow fiber membrane module with a rim pipe of the impeller type membrane module to obtain a dynamic MBR hollow fiber membrane assembly; arranging a plurality of dynamic MBR hollow fiber membrane assemblies on a water guide pipe, and connecting in series to form a wheel row; and arranging a plurality of wheel rows in a staggered manner to complete the preparation of the dynamic MBR hollow fiber membrane module. The invention can solve the problems of low packing density of the existing rotary membrane component and easy blockage and pollution of the root of the existing curtain type membrane component, and greatly prolongs the service life of the membrane.

The invention discloses a sewage disposal pump with blocking early warning and automatic reversing functions and a control method thereof, and particularly relates to the technical field of sewage disposal pumps, the sewage disposal pump comprises a pump body, a driving motor, a supporting piece, a cutting assembly, a flushing assembly and a collecting assembly, and the cutting assembly comprises a movable blade and a fixed blade which are arranged in the supporting piece; the movable blade and the fixed blade can be matched with each other to smash and cut impurities in the sewage, and the movable blade can be far away from the fixed blade to prevent entanglements from being mixed between the movable blade and the fixed blade; the driving motor rotates positively and negatively for many times, the movable blade is far away from the fixed blade and is unwound during rotation, meanwhile, the flushing part reciprocates for many times through the driving motor, and pulse water flow and turbulent flow are formed in the supporting part to flush the movable blade. And the stirring piece rotates cooperatively to actively wind the fiber bundles, so that the problem that the blades and the impeller are blocked and cannot operate due to the fact that long-strip-shaped rags and other fiber objects wind the blades or are clamped into blade gaps is solved.

The application discloses a kind of high thermal conductivity unidirectional carbon / carbon composite material and preparation method thereof, carbon fiber bundle is spread, carbon fiber bundle is flat, and flat carbon fiber bundle is obtained;Flat carbon fiber bundle is arranged in parallel, and weaving is carried out, and carbon fiber cloth is obtained;Pyrolytic carbon is deposited to carbon fiber cloth;The carbon fiber cloth of pyrolytic carbon deposition is pre-graphitized;Pre-graphitized carbon fiber cloth of preset layer number is laminated, and preform is obtained;Flat carbon fiber bundle is arranged in imitation bricklaying structure;Preform is clamped along the thickness direction, and pyrolytic carbon is deposited to preform densification, then graphitization treatment is carried out, and high thermal conductivity unidirectional carbon / carbon composite material is obtained.The structure and arrangement mode of fiber bundle and unidirectional fiber cloth are controlled and designed, cross-scale structure design on micro-mesoscopic-macro scale is realized, and unidirectional C / C composite material with high thermal conductivity, high bearing and ultra-light is obtained.

A coherent fiber optic bundle breakout cable assembly includes a trunk fiber bundle having a plurality of optical fibers in a close-packed 2D array at a trunk connector end face, and multiple breakout bundles emanating from the trunk fiber bundle and each including a group of optical fibers in a close-packed 2D array at a breakout connector end face, with optical fibers being in lateral contact with one another. Bonding material is arranged in interstitial spaces of optical fibers near ends of each breakout bundle. A method for fabricating such an assembly includes holding the plurality of optical fibers within an elastomeric fixture, dicing the plurality of fibers to provide diced ends thereof, selectively applying and curing bonding material in interstitial spaces between optical fibers proximate to the diced ends according to a bundle-forming pattern, separating groups of optical fibers into breakout bundles, and retaining each breakout bundle in a corresponding breakout bundle ferrule aperture of one or more breakout bundle ferrules.

A near-wall velocimetry probe includes a probe body configured for flush mounting on a surface, at least one tracer source mounted to or integrated within the probe body, at least one fiber bundle mounted to or integrated within the probe body, and at least one detector optically coupled to the at least one fiber bundle. The at least one fiber bundle is configured to capture optical signals from the tracers. The probe may include an illumination source embedded within the probe body and optical filters coupled to the fiber bundle. Methods for measuring near-wall flow velocity using the probe and systems for near-wall velocimetry are also provided.

The application provides a photoacoustic endoscope and an endoscope system. The photoacoustic endoscope comprises a light guide part, an operation part and an insertion part, a fiber bundle extends from the light guide part to a head end part at the distal end of the insertion part via the operation part, the fiber bundle comprises a main trunk section, a first branch section and a second branch section, the photoacoustic endoscope further comprises a joint assembly, the joint assembly comprises a main trunk joint, a first branch joint and a second branch joint which are independently and detachably connected to the main trunk joint, the proximal end of the main trunk section is optically coupled to a light guide interface on the light guide part, the distal end of the main trunk section is connected to the main trunk joint, the proximal end of the first branch section is connected to the first branch joint, the proximal end of the second branch section is connected to the second branch joint, the distal ends of the first branch section and the second branch section are both fixed to the head end part, and the distal end of the main trunk section is optically coupled to the proximal ends of the first branch section and the second branch section. Such a photoacoustic endoscope can be conveniently disassembled, repaired or replaced when returned for repair, has better maintainability and better user experience.

An improved compression-molding process utilizes a unique assemblage of feed constituents, arranged, and aligned in a particular manner. The assemblage includes fiber-bundle preforms having a filamentous form with a typically circular or oval cross section, and having many thousands of relatively long, co-aligned, resin-impregnated fibers. The fiber-bundle preforms are formed to have an application-appropriate length and optionally shape. The assemblage further includes very-short-fiber constituents have a filamentous form and consisting of very short, typically non-aligned, resin-impregnated fibers. Although consisting of very short fibers, the very-short-fiber constituent may nevertheless be similar in length and cross section to the FB preforms to facilitate handling, registration with a mold cavity, and the like. In some embodiments, some of the very-short-fiber constituents are positioned in the assemblage proximal to expected locations of respective parting lines on the fiber-composite part to be molded. In some embodiments, the long axis of those very-short-fiber constituents is substantially parallel to the respective parting lines.

This invention relates to the field of carbon fiber composite materials technology, and discloses a carbon fiber bundle composite filament coated with nanofiber yarn, comprising carbon fiber bundles and nanofiber yarn, wherein the nanofiber yarn coats the outer surface of the carbon fiber bundles; the carbon fiber bundles are high-modulus carbon fiber bundles, and the nanofiber yarn is prepared from polymer materials by conjugated electrospinning. This invention utilizes conjugated electrospinning technology to introduce a dense and uniformly distributed layer of nanofiber yarn onto the surface of high-modulus carbon fiber bundles, obtaining a carbon fiber bundle composite filament coated with nanofiber yarn. This composite filament exhibits good wear resistance and toughness, and its processability is significantly improved.

The utility model discloses an anti-dislocation invisible zipper, belongs to the technical field of zippers, and solves the problem that zipper teeth are easy to dislocation in a mutual occlusion process. Comprising a zipper belt and a puller, pressing plates are fixedly connected to the two sides of the puller and attached to the outer side face of the zipper belt, the zipper belt comprises stiff and smooth yarn, and the length direction of the stiff and smooth yarn is the same as that of the zipper belt. The stiff and smooth yarn is adopted as the warp yarn, so that the zipper belt has good stiff and smooth performance, in the process that the puller moves along the zipper belt, the pressing plate flattens the zipper belt below the pressing plate, the zipper belt on the periphery is kept flat under the action of the stiff and smooth performance of the zipper belt, zipper teeth on the zipper belt are prevented from being misplaced, and the zipper belt is prevented from being damaged. The stiff and smooth yarn is formed by twisting three strands of polyester fiber bundles, and the polyester fiber bundles have good stiff and smooth performance.

The invention discloses a sepiolite fiber with high length-diameter ratio and high dispersity and a preparation method and application thereof, and the sepiolite fiber is prepared according to the following steps: (1) mixing sepiolite raw ore with water to prepare slurry with the solid content of 5-20wt%; (2) adding the slurry into a high-shear homogenizing emulsifying machine, and performing shearing treatment at the rotating speed of 6000-15000rpm to realize protective physical stripping of sepiolite fiber bundles; (3) carrying out centrifugal separation on the slurry subjected to shearing treatment to obtain a sepiolite fiber suspension with good dispersion; and (4) the sepiolite fiber suspension is subjected to pre-freezing treatment and then subjected to programmed temperature control freeze drying under the vacuum condition, and the freeze drying process comprises at least one low-temperature sublimation platform stage at the temperature ranging from-30 DEG C to-10 DEG C. The sepiolite-based thickening material with excellent thickening performance and stability is successfully prepared by innovatively optimizing high-speed shearing and emulsifying process parameters and combining a rheological property regulation and control technology.

The application discloses a two-dimensional woven composite material geometry modeling method, device, equipment and medium, relates to the technical field of composite material structure design and modeling, and is used for solving the technical problems that the simulation model precision and reliability are low in the prior art. The method comprises the following steps: an initial matrix model is created by using a random distribution algorithm and a Boolean subtraction operation; a two-dimensional woven unit cell model is created according to a preset yarn space trajectory formula; a multi-layer two-dimensional woven fiber bundle model is created according to a plurality of two-dimensional woven unit cell models; a reserved fiber bundle matrix model is created by performing a difference set on the initial matrix model and the multi-layer two-dimensional woven fiber bundle model; and a two-dimensional woven three-dimensional model containing random pores is created by in-situ assembly of the reserved multi-layer fiber bundle matrix model and the multi-layer two-dimensional woven fiber bundle model. Therefore, the simulation model precision and reliability can be improved by using the technologies of "random distribution algorithm, Boolean subtraction operation, reserved position and in-situ assembly".

The application discloses a fiber bundle automatic segmentation and quantitative labeling method for white matter abnormalities of Parkinson's disease, and belongs to the technical field of medical image processing. The application solves the problem that the existing technology relies on manual delineation or traditional machine learning methods for white matter abnormality detection, and has the problems of low efficiency and strong subjectivity. By setting a first threshold value and a second threshold value, not only can the abnormal fiber bundle be identified, but also the required threshold range can be selected according to different research purposes and clinical needs, so that reliable judgment results can be provided in both diagnosis and early screening. If both threshold values are selected, the method can comprehensively judge each parameter of each fiber bundle, so as to more accurately identify the white matter abnormal fiber bundle of the Parkinson's disease patient, improve the accuracy of the fiber bundle labeling result of the white matter abnormalities of Parkinson's disease, realize the function of high-precision positioning of the white matter abnormal fiber bundle of Parkinson's disease, and provide stronger support for clinical diagnosis.

The invention relates to the technical field of fiber treatment, in particular to pretreatment mixing processing equipment for aramid fiber production, limiting disc bodies are symmetrically and fixedly arranged at the two ends of a guide cylinder, and mixing limiting groove bodies are formed in the annular surface of the outer side wall of the guide cylinder at equal intervals; the mixing limiting groove body and the mixing auxiliary mechanism are used in cooperation to conduct mixing pretreatment on the fiber bundle strips, and the arranged guide iron ring is used in cooperation with the mixing limiting groove body on the outer side of the guide cylinder and the mixing auxiliary mechanism on the front side supporting plate to conduct mixing pretreatment processing on the fiber bundle strips. According to the fiber bundle guide device, the fiber bundle guide plate body and the mixing limiting groove body are matched for use, so that a binding effect can be provided for the fiber bundle guide when the fiber bundle guide is subjected to mixing treatment, the fiber bundle guide is prevented from being scraped and damaged when passing through a feeding opening of a drawing frame, a mixing carding effect is achieved for the fiber bundle guide, and the fiber bundle guide device is suitable for being used in a drawing frame. The problem that multiple strands of fiber bundles are scattered during mixing work is solved.

The utility model provides a kind of blood purification device, comprising: cylinder, end piece and fibre bundle assembly, cylinder is provided with accommodating cavity, and the both ends of accommodating cavity have opening;Two end pieces are respectively detachably connected at the both ends of cylinder, and two end pieces are respectively used to seal the two openings of cylinder, and end piece is provided with flow-through port;Fibre bundle assembly includes hollow fibre bundle and connecting ring, hollow fibre bundle is accommodated in accommodating cavity, two connecting rings are respectively arranged at the both ends of hollow fibre bundle, and the end of hollow fibre bundle is connected with connecting ring by solidified adhesive layer, connecting ring is detachably connected in the inside of end piece, and connecting ring insulates solidified adhesive layer and end piece.The blood purification device provided by the utility model can replace hollow fibre bundle, which is conducive to reducing the manufacturing cost of blood purification device.

A fiber preform is provided for use in an overmolding process that includes a fiber bundle arranged in a predetermined pattern and attached to itself by a plurality of stitches of a thread to form at least one preform layer. At least one positioning element is associated with the at least one preform layer, the at least one positioning element configured to engage with at least one corresponding alignment element on a mold to indicate proper positioning of the fiber preform within the mold. A process of overmolding is also provided in which the at least one positioning element of the fiber preform engages with the at least one corresponding alignment element on the mold to indicate proper positioning. The mold cavity is then filled with a resin to permeate the fiber preform engaging the mold in a unique orientation to yield an article upon resin cure.