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306 results about "Single fibre" patented technology

Electrode to Nerve Distance Estimation

Estimating a nerve-to-electrode distance involves applying a stimulus from a stimulus electrode to a nerve. Neural measurements of at least one evoked compound action potential are obtained, and processed in order to estimate an originating state of stimulation exhibiting at least one characteristic defined by a single fibre size. A single fibre model is then applied to produce a measure of the nerve-to-electrode distance. Also provided for is estimation of a distribution of recruited fibres. Measurements of a compound action potential are obtained from sense electrodes spaced apart along a neural pathway. A conduction velocity of the compound action potential is determined from the latency between the measurements. From the conduction velocity a dominant recruited fibre diameter is determined. A rate of dispersion of the compound action potential between the sense electrodes is determined. From the rate of dispersion a distribution of diameters of the recruited fibre population is determined.
Owner:SALUDA MEDICAL

Method and device for testing micro-tensile mechanical properties of metal fiber

ActiveCN101949797AAdjust the measuring rangeAdjust measurement sensitivityMaterial strength using tensile/compressive forcesUsing optical meansTest sampleStress–strain curve
The invention discloses a method and a device for testing micro-tensile mechanical properties of a metal fiber. Being different from the existing tensile tester, the invention is characterized in that a force transducer is composed of a non-contact photoelectric displacement transducer and an elastic element, the force transducer can be used for measuring both the tensile force of a fiber and the displacement of the gripped end of the fiber and helping automatically and accurately obtain the tensile force-deformation curve of a test sample in real time so as to obtain the stress-strain curve of the test sample, and parameter values characterizing the micro-tensile mechanical properties of the metal fiber can be obtained by analyzing the stress-strain curve. By using the optical non-contact measurement method, the invention avoids the interference generated by the traditional contact measurement, and enables the measuring system to be more stable. Besides, the whole device has the advantages of ingenious structure, simple and convenient operation and stable performance, thereby being applicable to testing the micro-tensile mechanical properties of various single fibers (especially metal fibers).
Owner:HUAZHONG UNIV OF SCI & TECH

Testing machinery cellfiber clamper and method for measuring tensile strength

The invention provides a tester single fibre clamp and a tensile strength measuring method relating to a clamp and tensile strength measurement. The invention provides a tester single fibre clamp and a method for measuring the tensile strength of ceramic single fibre. The clamp is provided with an upper collet device of a tester, a load sensor, a tenaculum device, an upper and lower clamping device, a horizontal adjusting device and a lower collet device of the tester. The adjusting clamp in proper alignment measures the load linearity in vertical direction and rectifies the focus of a photoelectric extensometer; the parameters of an measuring program are set; single fibre is put on the centerline of a hole of a square paper frame, then placed in the middle of the upper and lower clamping device; the vertical direction of the single-fibre is adjusted; the edge of the square paper frame is burned off; a strain collecting device is started to trace the edge distance between the upper and the lower paper frames; a tensile program is started up to begin the measurement; the relation between the load and the strain is recorded to obtain a fibre fracture load value and deformation data, thereby measuring a fibre strain value; a diameter value of a fracture is observed and input to the tester in order to acquire the fracture strength of the single fiber.
Owner:XIAMEN UNIV

Water-soluble polyalcohol, polyisocyanic acid ester and stalk fibrous composite material and preparation thereof

The invention relates to a composite material of water-based polymer, polyisocyanate and straw fiber and a manufacturing method thereof. The composition and quality percentage of the composite material are as follows: 83.0-90 percent of straw fiber, 9.0-14 percent of water-based polymer, 0.5-2.0 percent of polyisocyanate cross linker, and 0.5-1.0 percent of inorganic filler. The specific preparation method is as follows: processing of straw fiber, formulation of water-based polymer main glue, successively spraying of the main glue and isocyanate cross linker, pavement of gum fiber, precompression under a normal temperature, and hot-pressing solidification and molding, and ultimately the water-based polymer-polyisocyanate-straw fiber composite material is manufactured. The sheet manufactured by the method has the advantages that not only high adhesive strength, fracture toughness, and water-proof property are possessed, but the technique is simple; the production cost of the fiberboard is lower; a good market prospect is acquired.
Owner:南通双弘制线有限公司

Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof

The present invention belongs to the field of textile measuring instrument, and is one kind image test method and apparatus for the heat shrinkage of chemical fiber. The measuring method includes taking images of single fiber samples hung to cylindrical frame with CCD camera to obtain the length change before and after heating, and calculating in computer the heat shrinkage of chemical fiber. The measuring apparatus includes stepped motor, turntable, positioning pin, sample cylinder, elevator, metering calibration block, upper spring clamp, lower tensile clamp, holding circular ring, CCD camera, pulse distributor, casing, computer, display and printer. The present invention has the advantages of reliable test result, high precision, simple instrument structure and low fault rate.
Owner:SHANGHAI LIPU APPLIED SCI TECH INST

Preparation method of tough graphene/cellulose composite heat-conductive and electro-conductive film

The invention discloses a preparation method of a tough graphene/cellulose composite heat-conductive and electro-conductive film. The preparation method of the tough graphene/cellulose composite heat-conductive and electro-conductive film comprises the following steps: firstly, dispersing the wood pulp into an aqueous solution to peel the wood pulp into single nano diameter single fibrous bundles under the action of liquid shear force; diluting the single fibrous bundles with deionized water and obtaining the low concentration cellulose aqueous solution through treating by a high-speed shearing machine for a certain period of time; then dispersing the industrial graphene nanosheets evenly into the aqueous solution containing the dispersant through ultrasonic treatment; then dripping the prepared cellulose aqueous solution gradually into the graphene dispersion; and preparing the graphene/cellulose composite film through ultrasonic mixing, suction filtration, drying and other processes. The obtained film has good flexibility, thermal conductivity and electrical conductivity, and the mechanical, thermal and electrical properties of the film can be further improved through hot pressing treatment. The preparation method of the tough graphene/cellulose composite heat-conductive and electro-conductive film has the advantages of simple process, low cost, green environment protection and wide application value in the field of functional composite materials.
Owner:QILU UNIV OF TECH

Fiber structure and method for production thereof

A fiber structure including: (A) a single fiber having a fiber diameter of 3 μm or more and / or a fiber bundle having a fiber bundle diameter of 3 μm or more, and (B) a single fiber having a fiber diameter of 1 μm or less, wherein the component (A) has a number average fiber diameter and / or a number average fiber bundle diameter of 4 μm or more, at least a part of the component (B) is dispersed in the component (A) in a monofilamentous state in the cross-section taken in the thickness-wise direction of the fiber structure, at least a part of the component (B) dispersed in the monofilamentous state is bent and / or tangled to form a void space, and at least one surface of the fiber structure is covered with the component (B).
Owner:TORAY IND INC

Production technology of glass fiber cloth for insulation

Provided is a production technology of glass fiber cloth for insulation. The production technology of the glass fiber cloth for insulation comprises the steps that EC8-47.5 glass fiber yarn serves as warp and weft; a warping working procedure technology is carried out, wherein the EC8-47.5 glass fiber yarn is placed on warping creels in sequence; a slashing working procedure technology is carried out; a knitting working procedure technology is carried out, wherein an air jet loom is used for carrying out weaving, drafting, reed insertion, gaiting and weaving are carried out on slashed warp beams in sequence according to plain weave, the warp and weft density is 17.3*14.2 pieces per centimeter, and the cropping length is 2000 meters per roll; a post-processing working procedure is carried out; drying is carried out at the temperature of 200DEG C, and the trimming working procedure, the take-up working procedure, the check working procedure and the packaging working procedure are carried out. The purpose of the production technology for using the EC8-47.5 glass fiber yarn to produce the high-grade glass fiber cloth for insulation is achieved, the warp and weft density of the glass fiber cloth is 17.3*14.2 pieces per centimeter, the thickness of the glass fiber cloth is 0.140mm, the basic weight is 150g/m<2>, the diameter of a filament of the glass fiber cloth is 8 microns, the warp and weft number is 47.5Tex, and the production technology of the glass fiber cloth for insulation has the advantages that the technology is more convenient to use, production management is easy, weaving is convenient, and the foundation is laid for producing the high-grade insulating glass fiber cloth through ordinary devices.
Owner:江西长江化工有限责任公司

Filtering material for filter, and water filtering apparatus provided with filtering material

The present invention provides a filtering material for filtering water having high collection efficiency and long filtering life, and a water filtering apparatus including the material. The present filtering material includes a laminated sheet in which a nanofiber layer formed from a nanofiber having a single fiber average diameter of 10 to 1000 nm and meeting all the following conditions and a base material including a nonwoven or woven fabric containing a hydrophilic fiber having a single fiber average diameter of not less than 1 μm. Further, the present water filtering apparatus is configured by including the filtering material for filtering water. (1) The nanofiber layer has a basis weight of 0.1 to 10 g / m2. (2) The nanofiber is a continuous long fiber. (3) The nanofiber contains at least an ethylene-vinyl alcohol copolymer.
Owner:KURARAY CO LTD

Filter medium and filter unit

A filter medium which is not stretched by wind pressure even when having a small thickness; and a filter unit which enables a treatment in a large gas quantity. The filter medium is made of a nonwovenfabric which consists mainly of organic fibers and in which the single fibers have been fixed to one another. The nonwoven fabric is constituted of two or more kinds of single fibers differing in Young's modulus and fineness and contains noncrimped single fibers having a Young's modulus of 150 cN / dtex or higher and a fineness of 7 dtex or higher in a proportion of 20% or higher based on the totalmass of the fibers. The single fibers are fixed to one another with a resin having a glass transition temperature of 30 DEG C or higher.
Owner:TORAY IND INC
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