107 results about "Fiber density" patented technology

The invention relates to an anti-ant large-core-number fiber ribbon cable comprising a cable core and an outer sheath. The cable core includes loose tubes; and fiber ribbons are sleeved inside the loose tubes. The outer sheath is an outer nylon sheath; and a non-metallic reinforcement layer is arranged between the outer sheath and the cable core. According to the anti-ant large-core-number fiber ribbon cable provided by the invention, with the outer nylon sheath, ants can not bite the sheath, so that the damages on the optical cable by ant biting in a pipe at an area with a serious anti problem are prevented, the normal state of the cable is ensured, and the application region of the cable is extended. The cable based on a simple and reasonable structure has advantages of small cable diameter, high fiber density, large fiber capacity, and low duty ratio and can be laid in a pipe conveniently; and the bending performance is good. During branched connection, 4 to 24 fibers can be melted once, so that the construction time is saved and the manpower cost is lowered, and the construction efficiency is improved. On the basis of the full drying type dielectric structure, branched connection is realized conveniently and usage becomes convenient.

The invention relates to a bionic meniscus 3D printing method and system, and the method comprises the steps: reading a meniscus STL model, carrying out the data preprocessing of the data of the model, and carrying out the construction to obtain a concave envelope contour; performing offset processing and four-curve segmentation to generate an elliptic equation fiber field; establishing a bidirectional mapping relation between a parameter space of an elliptic equation fiber field and a meniscus physical space based on an RBF mapping theory; based on a meniscus fiber density gradient change theory, performing simulation in a parameter space of the elliptic equation fiber field to obtain a bionic gradient fiber field; according to the meniscus STL model, the bidirectional mapping relation and the bionic gradient fiber field, fiber path coordinates of a meniscus physical space are obtained, and a 3D printing path is generated; and printing according to the 3D printing path to obtain the bionic meniscus. Precise simulation of a natural meniscus complex fiber structure is achieved through mathematical modeling, and the technical problems that in the prior art, fiber field control precision is insufficient, and regional characteristics are difficult to achieve are solved.

The invention relates to the technical field of color detection, in particular to a color difference calculation optimization method and system for archaized linen viscose reactive dyeing. Comprising the following steps: monitoring a fabric motion state in real time, calculating a motion speed and displacement, and determining a spectrum acquisition opportunity and a position compensation parameter; illuminating the surface of the to-be-detected fabric at an acquisition position through a polarized light source, and performing polarized spectrum data acquisition in the normal direction of the surface of the fabric to obtain reflection spectrum information; exciting the surface of the to-be-detected fabric by adopting an ultraviolet light source, collecting fluorescence spectrum data, and identifying different fiber areas; calculating fiber density distribution in the fiber area, and constructing a layered weight system; calculating chromatic aberration of the fiber area based on the reflection spectrum information, extracting chromatic aberration characteristics, and measuring and calculating an antique degree quantification result; setting a color difference threshold value standard according to an antique degree quantification result, and adjusting a color difference threshold value according to an evolution trend; and based on the layered weight system and the chromatic aberration threshold, performing weighted calculation on the chromatic aberration value of the fiber region to obtain a comprehensive chromatic aberration evaluation result.

The invention relates to a preparation method for improving the bulkiness of cloud wool fibers, and relates to the technical field of fiber material preparation, and the preparation method comprises the following steps: preparing primary gel; preparing secondary cross-linked gel through step-by-step cross-linking of sodium silicate and a covalent organic framework material; preparing a fiber template by electrostatic spinning, placing the secondary cross-linked gel on the fiber template, and pressurizing to obtain a gel template complex; immersing the fiber template complex into a 1, 3, 5-triformyl benzene solution, and heating for reaction to obtain a semi-finished product; carrying out gradient solvent replacement on the semi-finished product, and carrying out modification treatment by using a hexadecyltrimethoxysilane solution to obtain a modified semi-finished product; and drying the modified semi-finished product at normal pressure by adopting gradient heating to obtain the aerogel cloud wool fiber. The method has the effects of improving the bulkiness and the heat insulation and heat preservation performance of the cloud wool fiber, the fiber density is low, and the lightweight property is good.

The invention relates to the technical field of layered products, and particularly discloses a heat-insulating and wave-absorbing skin material as well as a preparation method and application thereof. The heat-insulating and wave-absorbing skin material is of an integrated layered structure based on an aluminum oxide-mullite system, comprising a functional gradient layer with double gradients of fiber density and aperture, an impedance matching layer with a gradient dielectric constant, a resonance wave absorbing layer with a periodic dot matrix formed by silicon carbide and aluminum oxide core-shell microspheres, and a heat insulation layer with a nano-micron double-scale pore structure. According to the preparation method, a green body is constructed mainly through tape casting and silk-screen printing, and then co-sintering integrated forming is carried out. The material has the excellent characteristics of high temperature resistance, toughness, efficient heat insulation, broadband wave absorption and the like, and is suitable for extreme environments such as hypersonic aircraft skin and the like.

The invention relates to a controllable ceramic nanofiber sponge with a stacked structure and a preparation method of the controllable ceramic nanofiber sponge. The preparation method comprises the following steps: firstly, mixing and stirring macromolecules, inorganic sol and a solvent in proportion to prepare a spinning solution; then, preparing a controllable hybrid nanofiber sponge with a stacking structure by gradually stacking fibers from dense to loose (dense-sparse) as a basic structure by using a conjugate electrostatic spinning method; finally, organic components are removed through high-temperature calcination, and the stacking structure controllable ceramic nanofiber sponge with dense-sparse gradient stacking of the ceramic nanofibers as the basic structure is obtained. According to the method, by regulating and controlling stacking of dense-sparse basic structures, the problems that the adjustable range of the stacking density of the ceramic nanofiber sponge is narrow and the adjustability of the stacking structure is poor are effectively solved, meanwhile, the stretching resistance and the bending resistance of the ceramic nanofiber sponge are remarkably improved, and the use value and the popularization value are extremely good.

The invention provides a fry adaptive domestication system and method based on multidirectional flow impact exercise, and relates to the technical field of fishery breeding, the system comprises three-section domestication pool bodies, the domestication pool bodies are detachably connected through flange plates, the bottom of each domestication pool body is fixedly connected with a supporting column, the upper portion of each supporting column is fixedly connected with a supporting seat, and the supporting seat is fixedly connected with the bottom of the corresponding domestication pool body. A motor is arranged on the upper portion of the supporting seat, a third bevel gear is fixed to the output end of the motor, and a connecting assembly facing the side wall of the domestication pool body in the radial direction is meshed with the third bevel gear. The invention provides a multi-directional flow impact training structure, which enables the fry to swim back and forth, turn and avoid and the like in radial, annular and spiral flow, the caudal peduncle muscle fiber density is improved by 20-30%, the swimming speed is improved by 40% compared with that of the traditional domesticated fry, the anti-countercurrent ability intensified training in the three-dimensional space of the fry is realized, and the endurance, explosive power and turning flexibility of the fry are improved in a balanced manner.

The invention provides a meat preservation method with self-assembled nanoparticles cooperating with a three-layer controlled release film. The method comprises the following steps: S1, selecting fresh meat, removing impurities, cleaning, detecting the muscle fiber density and the total number of initial bacterial colonies, classifying the meat into I / II / III classes according to the standard, and pre-cooling and discharging acid for 18-24 hours under the conditions that the temperature is 0-2 DEG C, the air speed is 0.3-0.5 m / s and the humidity is 85-90%; s2.2, graded loading of dormant-state self-assembled nanoparticles at the temperature of 2-4 DEG C, I-type dip coating, II-type ultrasonic-assisted dip coating, III-type high-pressure atomization spraying and air drying in a blast environment after loading; s3, filling three layers of controlled release films, vacuumizing to-0.095 to-0.09 MPa, keeping for 20 seconds, filling customized controlled atmosphere according to grades, and then performing heat sealing; and S4.0, refrigerating at 0-4 DEG C. By constructing a synergistic mechanism that the self-assembled nano-particle adsorption layer recognizes a decay signal in a close range and the three layers of controlled release films release drugs in a linkage mode and strengthen barrier, the limitation that traditional preservation is passively inhibited and active ingredients are lost quickly is broken through, and the technical problems that bacteriostasis is not lasting, the water-retaining property is poor and sensory quality is prone to deterioration are fundamentally solved; and the fresh-keeping efficiency and the meat quality are both improved.

To provide a nonwoven fabric sheet which easily gives a wearer or the like an impression that the nonwoven fabric sheet is an absorbent article improved in diffusibility and absorbency of an excretion liquid while improving the absorbency of the excretion liquid in the nonwoven fabric sheet.SOLUTION: A nonwoven fabric sheet (3) used in an absorbent article (1), the nonwoven fabric sheet (3) having a longitudinal direction, a lateral direction, and a thickness direction that intersect each other, the nonwoven fabric sheet (3) comprising a plurality of fibers (3f), the nonwoven fabric sheet (3) having a first region (DH) and a second region (DL) as viewed in the thickness direction, the first region (DH) being a linear region extending in the longitudinal direction and having a higher concentration of fibers (3f) than the second region (DL), in addition, the nonwoven fabric sheet (3) is thinner than the second region (DL), and the first region (DH) and the second region (DL) are provided such that the value obtained by dividing the length in the vertical direction of the diffusion region of horse blood in the first region (DH) by the length in the vertical direction of the diffusion region of horse blood in the second region (DL) is 1.5 or more 5 minutes after dropping horse blood of 0. 5ml on the central portion of the nonwoven fabric sheet (3).SELECTED DRAWING: Figure 6

The invention provides a full-process preparation method for cutting and punching an OSB (oriented strand board) heat insulation board. Comprising the following steps: cutting and punching the OSB oriented structure insulation board; the fiber density, the glue content, the environment temperature and the humidity parameters of the OSB insulation board are collected through the sensing module; based on the parameters, the cutting speed, the punching pressure and the cutter feeding depth are dynamically adjusted through control logic operated by the micro-control unit; monitoring the state of the cutter in real time through a vibration sensor, and correcting parameters of the control logic according to a monitoring result; self-adaptive control over the whole cutting and punching process is achieved through a closed-loop feedback mechanism, and the closed-loop feedback mechanism comprises four sequentially-executed links including parameter collection, logic calculation, execution adjustment and state monitoring. The device can dynamically adapt to the whole cutting and punching process of plate characteristics and environmental changes.

This utility model relates to the field of spiral feeding technology, and specifically discloses a spiral feeding device for fiber density board production, including a base plate, a support fixedly connected to the top of the base plate, a conveying cylinder fixedly connected to the top of the support, a feeding assembly connected to the top of the feeding pipe, a bottom fixedly connected to the top of the support, and an inner wall side fixedly connected to the side of the spiral device. Raw materials enter the interior of the feeding pipe through the feeding assembly, the feeding pipe holds the raw materials, and the fixed cylinder is fixed by the connecting support. Reverse blades are used to create a reverse pushing state with the spiral device, thereby increasing the internal material disorder and thus making the material more thoroughly mixed, thereby improving the mixing quality. This spiral feeding device for fiber density board production achieves the purpose of facilitating the cleaning of internal raw materials.

The invention discloses a double-sided heterogenous non-woven fabric and a preparation method thereof, the double-sided heterogenous non-woven fabric is prepared by a wet papermaking technology, and the double-sided heterogenous non-woven fabric is sequentially provided with a hydrophobic layer, a transition layer and a hydrophilic layer; the hydrophobic layer is composed of hydrophobic fibers; the hydrophilic layer is composed of hydrophilic fibers; the transition layer is an area formed by mixing hydrophobic fibers and hydrophilic fibers, the content of the hydrophobic fibers in the transition layer is gradually reduced from the side close to the hydrophobic layer to the side close to the hydrophilic layer, and the content of the hydrophilic fibers is gradually increased from the side close to the hydrophobic layer to the side close to the hydrophilic layer; in the hydrophilic fiber and the hydrophobic fiber, the density of one fiber is higher than that of water, and the density of the other fiber is lower than that of water; the hydrophilicity is derived from modification of the fiber body instead of a surface coating, the hydrophobic layer, the transition layer and the hydrophilic layer are integrally formed, no hot melt adhesive or chemical adhesive bonding interface exists, and the interlayer stripping layering risk and the influence of chemical reagents are avoided.

Fibrous materials and methods of manufacturing fibrous materials are disclosed. In particular, this application discloses methods of making and processing serially deposited fibrous structures, such as serially deposited fibrous mats. Serially deposited fibrous mats may be used in implantable medical devices with various characteristics and features. Serially deposited fibrous mats of various mat thickness, fiber size, porosity, pore size, and fiber density are disclosed. Additionally, serially deposited fibrous mats having various amounts of fiber structures (such as intersections, branches, and bundles) per unit area are also disclosed.

The invention discloses an intelligent laser cutting device and method based on glass fabric production, and relates to the technical field of intelligent laser cutting devices. A laser cutter is arranged on the rolling and conveying device; and a fiber density detection mechanism, a laser cutting parameter dynamic controller and a laser cutting execution adjusting mechanism are arranged on the rolling and conveying device. By arranging the fiber density detection mechanism, the laser cutting parameter dynamic controller and the laser cutting execution adjusting mechanism, airflow vertically acting on glass fabric is generated, airflow resistance data is converted into fiber density data, and then working parameters corresponding to the laser cutter are generated; real-time detection of the fiber density of the glass fabric and dynamic adaptation of laser cutting parameters are achieved, it is ensured that an area with high fiber density is cut thoroughly, edge fusion of an area with low fiber density is controlled within a reasonable range, meanwhile, continuous high-speed conveying of a rolling and conveying device is adapted, and the cutting quality and production efficiency of the glass fabric are greatly improved.

The utility model discloses an adjustable compression roller capable of improving the dry strength of paper. The adjustable compression roller comprises a rack and a compression roller body installed on the rack. The compression roller is characterized in that compression roller textures for promoting paper fiber combination and improving fiber compactness are arranged on the outer surface of the compression roller body; an adjusting block for fixing the compression roller body and a driving source for driving the adjusting block to slide are further mounted on the rack in a sliding manner; the rack is further provided with an electromagnet for further fixing the adjusting block. The compression roller textures are arranged on the outer surface of the compression roller body, the contact area between the compression roller body and paper is increased, paper fiber combination is promoted, moisture and air in the paper can be discharged easily, the fiber compactness is improved, and therefore the strength of the paper is improved; the adjusting blocks are further fixed through magnetism generated after the electromagnets on the rack are electrified, so that multiple fixing is conveniently conducted on the pressing roller body in the production process, and the situation that the pressing roller body deviates in the production process, and then paper production is affected is prevented.

The invention discloses a hollow tube insulating pull rod and a preparation method, and relates to the technical field of electrical components, the hollow tube insulating pull rod comprises an insulating main body part A and connecting parts B. The connecting parts B are located at two ends of the insulating main body part A and are used for connecting metal accessories; the insulating main body part A and the connecting part B are woven by glass fibers, aramid fibers and polyester fibers through a weft backed weave weaving method, and the weft backed weave weaving method is that the glass fibers and the aramid fibers are used for combined weaving in the weft direction, and the polyester fibers are used for weaving in the radial direction. And after weaving, epoxy resin is added for curing treatment to form the hollow tube insulation pull rod. The stress distribution concentration phenomenon of the hollow pipe insulation pull rod is relieved through the weft backed weaving method and the fiber density gradient design, the basic material performance is maximized through the structural design, cost control is considered while high performance is achieved, and large-scale application and popularization of the insulation pull rod are facilitated.

The application relates to a preparation method for improving the bulkiness of cloud wool fibers, and relates to the technical field of fiber material preparation, which comprises the following steps: preparing a primary gel; preparing a secondary crosslinking gel through step-by-step crosslinking of sodium silicate and a covalent organic framework material; preparing a fiber template through electrospinning, placing the secondary crosslinking gel on the fiber template, pressurizing, and obtaining a gel template composite; immersing the fiber template composite in a 1,3,5-triformylbenzene solution, heating and reacting, and obtaining a semi-finished product; performing gradient solvent replacement on the semi-finished product, performing modification treatment on the semi-finished product by using a hexadecyl trimethoxysilane solution, and obtaining a modified semi-finished product; and adopting gradient temperature elevation normal-pressure drying on the modified semi-finished product, and obtaining aerogel cloud wool fibers. The application has the effects of improving the bulkiness and heat insulation and preservation performance of the cloud wool fibers, the fiber density is low, and the cloud wool fibers have good lightness.

Described are complex superstructures having at least two sub-components, where each sub-component has a longitudinal axis and a range of circumferential lengths between 0.5 inches to 8 inches measured along the longitudinal axis, where the difference between a largest circumferential length and a smallest circumferential length of each sub-component is no greater than a factor of 2. A reinforcing outer layer of fiber having an approximately uniform fiber density is bonded to at least a portion of a molded substrate that forms a base for each sub-component. An overlapping mating surface joint is positioned between the sub-components.

Provided is a nonwoven fabric having both excellent flexibility and processability to a product. This nonwoven fabric comprises heat bonding composite fibers with heat bonded intersections, wherein the specific volume of the nonwoven fabric is 140-200 cm3 / g, and the fiber density ratio between a high density part and a low density part in the nonwoven fabric is 1.5-2.0.

The present invention provides a production process and equipment for viscose-based staple fiber felt with a gradient density distribution, relating to the technical field of viscose-based fiber material processing. The process includes: using three types of viscose staple fibers with different physical parameters as gradient raw materials, using a mixer assembly to pre-distribute the three gradient raw materials, using a four-curtain laying machine for three-layer stacking, using a five-zone gradient needling machine to independently control the needling parameters of each zone, using a three-stage hot air tunnel for layered heating treatment, then performing differentiated surface treatment, and then using a CNC cutting machine for precise slitting. Through key technologies such as three-level fiber raw material design, layered laying, five-zone gradient needling, and hot-pressing gradient strengthening, a precise and controllable gradient density distribution of the felt material from the surface layer to the core layer is achieved, solving the problem of uneven fiber density transition or poor process repeatability caused by the lack of a systematic gradient construction method.

The invention relates to the technical field of automobile air conditioner filter elements, in particular to a production process of a multi-layer gradient composite automobile air conditioner filter element, a gradient structure of the multi-layer gradient composite automobile air conditioner filter element realizes active regulation and control on an airflow field and a pollutant capturing path: a loose outer surface serves as a pre-filtering layer to effectively intercept large particles and uniformize airflow; the fiber compactness and the nanopore / adsorption site density which are gradually enhanced inwards are sequentially responsible for fine filtration and efficient adsorption of VOC molecules, so that all functions of a traditional multi-layer structure are realized in a single material system.

An exemplary optical cable includes a first type of ribbon bundles, a second type of ribbon bundles, a third type of ribbon bundles, a plurality of strength rods, and an outer jacket. Each of the first, the second, and third type of ribbon bundles includes a first, a second, a third flexible ribbon with corresponding optical fibers disposed within a ribbon bundle jacket. The first type of ribbon bundles is arranged in an interlocking pattern in a central region of the optical cable. The second type of ribbon bundles and the third type of ribbon bundles are disposed around the first type of ribbon bundles in a peripheral region of the optical cable. The outer jacket is disposed around the second and the third type of ribbon bundles, and the plurality of strength rods being at least partially embedded in the outer jacket, where the cumulative cross-sectional area of all of the strength rods in the cable divided by the cumulative cross-sectional area of all glass parts of the optical fibers in the cable is a first value less than 0.22, and where, at a temperature between −40° C. and 0° C. and at a wavelength of 1550 nm, the attenuation increase of the optical fibers in the cable relative to 25° C. is below 0.15 dB / km.

The application discloses a fiber density determination method for asphalt mixture, belongs to the technical field of fiber density determination for asphalt mixture, and comprises a specific gravity bottle, a vacuum container and a vacuum pumping device. The vacuum pumping device comprises a base, a vibration table mounted on the base and a gas pumping pump. The vacuum container comprises a mounting cylinder and a top cover. A bearing frame is mounted in the mounting cylinder. The bearing frame comprises a bearing plate for bearing the specific gravity bottle and a clamping frame for clamping the specific gravity bottle. The bottom surface of the bearing plate is fixed with a connecting block. The bottom surface of the mounting cylinder is provided with a connecting groove for inserting the connecting block. The opposite inner sides of the connecting groove are provided with positioning grooves. The mounting cylinder is slidably mounted with a positioning block along the radial direction of the mounting cylinder through the positioning grooves. The two sides of the connecting block are provided with fixing grooves for inserting the positioning block. The application can quickly discharge the bubbles in the specific gravity bottle.

The application discloses a cotton GhSAC7 protein coding gene (Gh_D03G0020; LOC107937826), the coding sequence is 1791 nucleotides, and the protein sequence is 596 amino acids. GhSAC7 The protein expression level analysis and phenotype analysis are carried out on the gene editing material of the gene, and the results show that GhSAC7 The gene editing material of the gene has the phenotypes of slow fiber initiation, reduced fiber density and reduced total fiber amount. GhSAC7 The application can effectively regulate cotton fiber development, promote the initiation of cotton fiber, provide a theoretical basis for cotton variety improvement, and be used for cultivating new cotton varieties with excellent fiber quality.

The invention discloses a high-fiber-core-density air-blowing micro-cable and a preparation method thereof, and belongs to the technical field of optical cable design, the high-fiber-core-density air-blowing micro-cable comprises a cable core and a sheath, optical fiber sleeves are arranged to be flexible sleeves, so that the multiple flexible sleeves can be extruded and deformed mutually, the utilization rate of the internal space of the cable core is improved, the optical fiber density is higher, and the optical fiber density is higher. The transmission capacity of the formed optical cable is larger, the outer protective layer is cooled and shaped through vacuum sizing to ensure the roundness of the appearance of the optical cable and facilitate the air-blowing construction of the air-blowing micro cable, and the machinable wall thickness of vacuum sizing becomes smaller and the size of the formed optical cable is smaller by setting the material of the outer protective layer as a high-melt-strength material. Or the armor layer is arranged between the cable core and the outer protective layer, and the armor layer is bonded with the outer protective layer, so that the strength of the outer protective layer is improved, the outer protective layer is not easy to crack after being subjected to vacuum sizing after extrusion molding, and the overall strength and rigidity of the optical cable are further improved.

The utility model relates to the technical field of meat tenderization, and discloses a meat tenderization device for meat products, which comprises a base, a chain conveyor belt is arranged at the top of the base, a weighing conveyor belt is arranged on the side wall of the base, a water storage frame is fixedly connected to the top of the base, and a connecting assembly is arranged at the top of the water storage frame. A first hydraulic cylinder is fixedly connected to the side wall of the water storage frame, a lantern ring is fixedly connected to the output end of the first hydraulic cylinder, a fixing plate is fixedly connected to the side wall of the lantern ring, and a driving assembly is arranged at the top of the fixing plate; the driving assembly comprises a second hydraulic cylinder. According to the utility model, the first sliding plate is driven by the second hydraulic cylinder, so that the limiting column slides in the first sliding plate, and the second sliding plate at the bottom is driven to slide on the third fixing column to move the needle head, so that the problems that the distance between the needle heads cannot be adjusted according to the fiber density and thickness of different meats, and the taste consistency of products is influenced are solved; and the stability of the meat tenderizing device for meat products is improved.

The invention belongs to the technical field of communication optical cables, and particularly relates to a high-fiber-density compact air-blowing micro cable. The high-fiber-density compact air-blowing micro-cable comprises a light-cured non-metal reinforcing piece, at least one optical unit twisting layer and an outer sheath layer which are sequentially arranged from inside to outside, the optical unit twisting layer is obtained by twisting optical units on the outer side of the non-metal reinforcing piece; the optical unit is composed of a small-diameter optical fiber layer, a fiber paste layer and a loose tube which are sequentially arranged from inside to outside, and plastic coating adopts a secondary pre-coating process to realize plumpness of the fiber paste; the cable has excellent mechanical performance, and can meet the laying requirements in a complex environment, the tensile force is 1000N in a short period of 1min, and the strain of the optical fiber is 1t; and under the conditions of stretching, flattening and impacting, the residual additional attenuation of the optical fiber is less than or equal to 0.1 dB at 1550nm. The maximum attenuation change of the micro cable under high and low temperature circulation is 0.033 dB / km, the air blowing distance can reach 1.5 km or above, and the micro cable shows good laying performance.

A porous body that includes a fibrous body layer having entangled liquid crystal polymer fibers, wherein the entangled liquid crystal polymer fibers have a fiber diameter of not less than 1 μm and not more than 3 μm, and the fibrous body layer has a fiber density of 100 kg / m3 or more.