57 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 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 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

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.

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 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.

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.

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.

Provided is a non-woven fabric having excellent liquid permeability and mechanical properties for a high-viscosity liquid. The non-woven fabric includes thermally adhesive composite fibers in which intersection points are thermally adhered, the specific volume of the non-woven fabric is 60 cm3 / g to 95 cm3 / g, and the fiber density ratio of a high-density region to a low-density region in the non-woven fabric is 1.4 or less. The thermally adhesive composite fibers constituting the non-woven fabric are distributed in a state of low density in the thickness direction of the non-woven fabric, and the fibers form adhesive points at an appropriate density.

The application relates to the technical field of textile printing and dyeing, and discloses a waterless printing and dyeing process intelligent control method and system.The method comprises the following steps: collecting dye dispersion and fabric fiber density data in a waterless medium, and generating an initial concentration distribution map; inputting a convolutional neural network to identify concentration instability regions and local deviation values; if the deviation exceeds a preset threshold, iteratively optimizing dye injection parameters to obtain an optimized concentration distribution map; segmenting the regions and extracting dye penetration path vectors of high fiber density regions; determining regional adsorption adjustment coefficients through a support vector machine; updating the parameters to obtain a dynamic concentration regulation sequence; iteratively optimizing the final uniform coloring distribution through coloring simulation; and extracting quality indicators to optimize process parameters and determine a production compatibility scheme.The application solves the problem of uneven dye dispersion through multi-dimensional data fusion and intelligent algorithm regulation, and improves coloring uniformity, process stability and production compatibility.

The present application relates to the technical field of color detection, in particular to a kind of antique flax stick active dyeing color difference calculation optimization method and system.The present application includes real-time monitoring fabric motion state, calculating motion speed and displacement, determining the timing and position compensation parameters of spectrum acquisition;Through polarized light source, the surface of the fabric to be measured is illuminated at the acquisition position, and polarized spectral data is collected in the normal direction of the fabric surface to obtain reflectance spectral information;Ultraviolet light source is used to excite the surface of the fabric to be measured, and fluorescence spectral data is collected to identify different fiber regions;The fiber density distribution in the fiber region is calculated, and a layered weight system is constructed;Based on the reflectance spectral information, the color difference of the fiber region is calculated, the color difference characteristics are extracted, and the antique quantification result is measured;According to the antique quantification result, set the color difference threshold standard, and adjust the color difference threshold according to the evolution trend;Based on the layered weight system and the color difference threshold, the color difference value of the fiber region is weighted calculated, and the comprehensive color difference evaluation result is obtained.

The present application relates to the field of wood board hot pressing, and particularly discloses a hot press for processing wood fiber density board and a hot pressing method, which comprises at least one set of hot pressing parts, each set of hot pressing parts comprises a lower plate and an upper plate, the inside of the lower plate and the upper plate is provided with a heat source, the upper plate and the lower plate can move relative to each other under the driving of a hydraulic rod, the two ends of the hot pressing part are respectively a feeding port and a discharging port, the two sides of the hot pressing part are provided with symmetrical pickup arms, the lower side of the pickup arm is provided with a moving seat, the lower side of the moving seat is provided with a sliding rail, the moving seat is slidingly connected with the sliding rail, the moving seat moves along the direction of the feeding port or the discharging port of the hot pressing part, one end of the two pickup arms adjacent to each other is provided with a hook part, the hook part hooks one end of the board material of the feeding port, with the movement of the moving seat, the board material is pulled to the discharging port direction, so that the board material is first stopped in the hot pressing part, and then is sent out after hot pressing.

This invention relates to a solid triangular prism preform and its layup and compaction method. The method includes: fabricating a split-type metal fixture adapted to the shape of the preform; selecting continuous unidirectional SiC fiber prepreg tape and cutting the prepreg tape according to the preform dimensions; continuously laying 90° and 0° prepreg tapes sequentially along the circumference of the prism in a V-shaped path; inserting multiple 0° continuous fiber bundles along the thickness direction in the sharp corner areas of the triangular prism, manually compacting the fiber bundles after each cumulative filling of 0.1-0.3 mm thickness; mechanically compacting the preform as a whole using the fixture; then placing the fixture and the preform together in an oven for curing; and finally, cooling and demolding after curing. This invention achieves a synergistic effect from three dimensions: layup method, sharp corner reinforcement, and compaction process, effectively solving the core technical problems of insufficient fiber density and easy pore aggregation in the sharp corner areas when preparing solid triangular prism preforms using traditional processes.

The invention provides a coNOS gene and a gene engineering method thereof for improving cotton fiber traits. The invention discloses a new target, namely coNOS, which is a nitric oxide (NO) synthase, which can be used for improving fiber traits and / or yield traits of gossypium plants. Functional identification is carried out on the coNOS gene, and cotton plants with significantly increased fiber density, significantly increased fiber quantity and significantly increased yield are obtained through a transgenic technology. The invention also discloses the coNOS for increasing the content of nitric oxide in the fiber and controlling the synthesis of the cell wall of the fiber cell.

The invention relates to the technical field of artificial boards, in particular to a composite fiber density board and a preparation method thereof. The method comprises the following steps: paving a fiber material mixed with a binder in a paving section of a continuous flat press, wherein the binder can be a powder or liquid binder; a fiber net output device is arranged, the upper surface or the lower surface or any one face of the fiber blank is covered with a fiber net, and the fiber net can be treated through a coupling agent; spraying a layer of water-based acrylic coating on the upper surface of the paved plate blank to improve the surface density of the plate and enhance the strength of the plate; a composite board blank composed of the fiber net and the fiber material enters a hot pressing working section of a continuous flat pressing machine, high-temperature and high-pressure pressing is carried out, the fiber net and the fiber material are combined into a whole under the action of a binding agent, acrylic acid coating and high temperature and high pressure, and the composite fiber density board with the high-strength fiber net compounded on the surface is obtained. According to the scheme, the high-strength fiber net compounded on the surface of the board is utilized, so that the strength of the density board is improved, and the application range of the density board is widened.

A non-woven fabric sheet (3) used in an absorbent article (1), the non-woven fabric sheet (3): having a longitudinal direction, a lateral direction, and a thickness direction that intersect each other; having a plurality of fibers (3f); and having a first region (DH) and a second region (DL) as seen in the thickness direction. The first region (DH) is a linear region extending in the vertical direction, the density of the fibers (3f) in the first region (DH) is higher than that in the second region (DL), and the thickness of the first region (DH) is less than that of the second region (DL). The first region (DH) and the second region (DL) are provided such that, five minutes after 0.5 mL of horse blood is dropped onto the central part of the non-woven fabric sheet (3), the value obtained by dividing the vertical length of a region in which the horse blood has diffused in the first region (DH) by the vertical length of a region in which the horse blood has diffused in the second region (DL) is 1.5 or greater.

The invention relates to a solid triangular prism special-shaped prefabricated body and a laying and compacting method thereof. The method comprises the steps that a split type metal tool matched with the prefabricated body in shape is manufactured; selecting a continuous one-way SiC fiber prepreg tape, and cutting the prepreg tape according to the size of the preform; the 90-degree prepreg tape and the 0-degree prepreg tape are sequentially and continuously laid in the circumferential direction of the prism in a V-shaped path; a plurality of 0-degree continuous fiber bundles are inserted into the sharp corner area of the triangular prism in the thickness direction, and every time the fiber bundles with the thickness ranging from 0.1 mm to 0.3 mm are filled in a cumulative mode, the filled fiber bundles are manually compacted; and the prefabricated body is subjected to overall mechanical compaction through the tool, then the tool and the prefabricated body are put into a drying oven together to be cured, and cooling and demolding are conducted after curing is completed. According to the method, the core technical problems that when the triangular prism solid prefabricated body is prepared through a traditional technology, the density of fibers in a sharp corner area is insufficient, and pores are prone to gathering are effectively solved through the synergistic effect of the three-dimensional forming technology of a layering mode, sharp corner reinforcement and a compaction technology.

The utility model discloses a kind of fiber solidified soil preparation devices based on density adjustment and semi-suspension dispersion, including density adjustment and fiber dispersion system, dehydration system and mixing system sequentially arranged according to material conveying direction;Density adjustment and fiber dispersion system include density adjustment bin and support device, agitator and on-line densimeter are equipped in bin, on-line densimeter is connected with PLC controller signal, and PLC controller receives the signal of on-line densimeter and controls water inlet valve opening and closing;Density adjustment bin is connected with dehydration system by slurry pump, fiber slurry is handled into mud cake after dehydration system, then, it is sent into mixing system and solidified agent mixes again.By adjusting slurry density to be similar to fiber density, it fundamentally eliminates the density difference and surface tension that cause fiber to form group, so that fiber is easily dispersed in liquid environment, and creates favorable conditions for subsequent uniform mixing.

This invention relates to the technical field of composite material preparation and discloses a method for needle-punching preforms. The method specifically includes the following steps: obtaining the cross-sectional contour information of the preform; dividing the cross-sectional contour into multiple cells; generating multiple needle-punching points in each cell; and needle-punching the preform according to the positions of the multiple needle-punching points. The needle-punching method for preforms of this application can improve the uniformity of fiber density within the preform and improve the finished quality of the preform.

Mop cloth comprises a fixing layer and fiber layers, the fiber layers are arranged on one side of the fixing layer, the fiber layers are separated into a plurality of mop working faces through at least one separation groove, and the surface of the fixing layer at the separation groove is not provided with the fiber layers. Or the fiber density of the fiber layer on the surface of the fixed layer at the separation groove is far smaller than that of the mop working surface. According to the utility model, adjacent mop surfaces can be obviously distinguished through the separation grooves, the mop surfaces are not easy to deviate during cutting, the separation grooves are easy to identify by machine equipment during machine cutting, later manual or machine cutting is facilitated, pattern splitting caused by deviation during cutting can be prevented, and the cutting quality of the mop is improved. And the separation groove structure is convenient to realize by adjusting a machine during production, so that dust in a workshop can be effectively reduced, and the health of workers can be guaranteed.