214 results about "Fibre content" patented technology

The invention relates to the technical field of microorganisms, and particularly discloses a fermentation method of bifidobacterium longum BBMN68 as well as a fermented product, a postbiotic and application of the fermented product. According to the method for fermenting the bifidobacterium longum BBMN68, a fermentation substrate comprises alkaline protease hydrolyzed milk and a pomelo peel extract; the hydrolysis rate of the alkaline protease hydrolyzed milk is 9-11%, and the water-soluble dietary fiber content of the shaddock peel extract is 75-80%; the mass ratio of the alkaline protease hydrolyzed milk to the shaddock peel extract is (10-15): (1-3). The content of active ingredients in the fermented product prepared by the method is high, and after the fermented product is prepared into the postbiotics to be taken, the immune function of an organism can be recovered, immune organ damage is reduced, inflammation is relieved, and intestinal flora is regulated and controlled.

The invention discloses a high roundness continuous fiber composite reinforced prepreg wire material and a preparation method thereof, the prepreg wire material is a special wire material for 3D printing manufactured by FFF fuse wires and is composed of a reinforcing material and a matrix, the matrix is thermoplastic resin, and the reinforcing material is chopped fibers and continuous fibers. The preparation method comprises the following steps: blending thermoplastic resin particles and chopped fibers according to a set ratio, and carrying out extrusion pelletizing to obtain short fiber reinforced particles; after short fiber reinforced granules are extruded by a single screw, the short fiber reinforced granules and the continuous fiber bundles enter a hot mold impregnation bin from different channels at the same time, and impregnation rods with different angles are arranged in the impregnation bin so as to promote a matrix to be adhered to the continuous fiber bundles; and then the continuous fiber bundle impregnated with the short fiber reinforced particles passes through a forming die with a certain diameter, and is finally drawn and wound to a wire coil. After the prepared prepreg wire is synergistically enhanced by the continuous fibers and the chopped fibers, not only are the fiber content and the mechanical property improved, but also the diameter uniformity of the wire is greatly improved.

The application discloses a processing method and device of bamboo, and relates to the field of material processing.The method comprises the following steps: processing round bamboo into bamboo board with a rectangular cross section; visually grading the end face of the bamboo board; establishing a bamboo fiber distribution density model; determining a sectioning position, and sectioning along the radial direction according to the relative value of fiber content distribution; independently grading and cold-pressing the bamboo slices obtained by sectioning; and respectively stacking and storing the bamboo slices with different thicknesses after vacuum drying and roller continuous drying. The bamboo slice sectioning device comprises a vacuum adsorption fixing device, which comprises a fixing device for adsorbing the bamboo board, and a fixing bottom plate, wherein a vacuum suction channel penetrating through the fixing bottom plate is arranged on the fixing bottom plate.The application can process the bamboo according to the fiber distribution along the radial direction of the bamboo wall, and prepare bamboo slices with different fiber contents and the same / different thicknesses, so that the uniform preparation and application of gradient variation bamboo are realized, the difference between units is eliminated, and materials and products with high strength and stable performance are more easily prepared.

The invention discloses a device for preparing a continuous fiber reinforced thermoplastic resin composite prepreg wire rod, and belongs to the technical field of composite material manufacturing. The device comprises a continuous wire releasing system, a fiber pretreatment system, a resin impregnation system, a solution volatilization system, a wire shaping system and a post-treatment system. In the preparation process of the continuous fiber reinforced thermoplastic resin prepreg wire, the thermoplastic resin in the prepreg wire is fully wetted and uniformly distributed through the continuous activation treatment of the fiber pretreatment system and the homogenization extrusion impregnation process of the resin impregnation system. And continuous preparation of the 3D printing continuous fiber reinforced thermoplastic resin prepreg wire with high fiber content and low porosity can be realized through subsequent processes such as efficient volatilization of the solution volatilization system and multi-level pultrusion shaping of the shaping system. The mechanical property and the production efficiency of the 3D printing continuous fiber reinforced thermoplastic resin prepreg wire and the composite material thereof can be obviously enhanced, and meanwhile, the manufacturing scheme is stable and reliable.

The invention discloses an chemi-mechanical pulp production method capable of improving the filtration property of chemi-mechanical pulp, and relates to the technical field of papermaking, high-concentration grinding freeness is optimized to 640 + / -30ml, pulp fine fibers can be controlled at 22%-33%, the tensile index middle-lower limit and the bulk middle-upper limit, the high-concentration grinding effect is improved, the effect between fibers is facilitated, the effect between the fibers and a grinding sheet is reduced, and the filtration property of the chemi-mechanical pulp is improved. Fiber cutting is reduced, and the content of pulp fine fibers is reduced; the MSD torque is increased to 250 + / -10 KNM, the tearing effect of wood chips is improved, the preimpregnation reaction of the wood chips is facilitated, the original fine content is controlled to 26%-29% from original 22%-33%, the pulp bulk is increased by about 0.1 cm < 3 > / g, and the tensile index is increased by 1.0 N.m / g; the four low-concentration grinders are changed into parallel connection, so that the residence time of pulp in the low-concentration grinders is prolonged, the cutting effect of the pulp ground by the low-concentration grinders on fibers is reduced, light friction between grinding sheets and the fibers is increased, fibrillation of the fibers is facilitated, the bulk and the tensile strength are improved to a certain extent, and under the content of fine fibers, the size of the fibers is reduced. And the bulkiness and the tensile index of the finished pulp are also improved to a certain extent.

The invention relates to a preparation method and application of antibacterial and starch aging resistant biphase gel, and belongs to the field of food processing. The preparation method is characterized by comprising the following steps: preparing oleogel from monoglyceride, corn oil and curcumin, preparing hydrogel from wheat bran araboxylan and tea polyphenol, mixing the oleogel and the hydrogel, adding lecithin, and homogenizing at a high speed to obtain the gel with a two-phase system. The biphase gel produced by the invention has the characteristics of zero trans-fat, high fiber content, simple preparation method and the like, realizes synergistic stability of oil and water phases, has both the mechanical strength of oil gel and the biocompatibility of hydrogel, can replace shortening in baked food, and has a wide application prospect. And the shelf life of the baked product is prolonged through the synergistic effect of antibiosis and starch aging resistance. The mass ratio of the oil phase to the water phase in the biphase gel is 1: 3-3: 1, the addition amount is 10-20% of the mass of the flour, the bacteriostasis rates on penicillium and rhizopus are 60-85% and 65-90% respectively, the starch crystallinity in the bread storage process is reduced by 10-20%, and the shelf life of the bread is prolonged by 10-20 days.

The invention belongs to the technical field of biomass composite material processing, and discloses a plant fiber-polymer composite material and a preparation method thereof. The plant fiber-polymer composite material is prepared from the following raw materials in parts by mass through plasticizing extrusion molding: 50 to 88 parts of plant fibers, 0.5 to 8 parts of a biomass cross-linking agent, 0.5 to 5 parts of a low-temperature water-soluble polymer, 10 to 50 parts of water and 0.05 to 3 parts of metal ions, wherein the metal ions and the biomass cross-linking agent form a reversible cross-linked network in the system through coordination; due to the existence of the reversible cross-linked network, the composite material can be plasticized and continuously extruded and molded under the shearing action at the temperature of 20-70 DEG C. The metal ion-biomass cross-linking agent coordination network provides high structural strength in a static state and is reversibly dissociated in a shear field, so that shear-driven plasticizing of a high-viscosity and high-fiber-content system in a low-temperature interval of 20-70 DEG C is realized.

The invention relates to the field of functional fabrics, in particular to an antistatic warm-keeping rabbit wool silk fabric. Which comprises a body, the body comprises a surface layer and a bottom layer connected with the surface layer, and is characterized in that the surface layer comprises 40-50% of regenerated cellulose fibers, 8-15% of spandex, 2-5% of rabbit wool and the balance acrylic fibers; the fiber content of the bottom layer is as follows: 22-30% of regenerated cellulose fiber, 3-5% of silk, 8-15% of spandex and the balance of acrylic fiber. The bottom layer containing silk and the surface layer containing rabbit wool are formed, so that the fabric has better antistatic property, heat preservation property and pilling resistance.

The invention discloses an organic fertilizer production method, and particularly relates to the technical field of organic fertilizer production, and the method comprises the following steps: kitchen garbage is classified according to moisture and fiber content, and is pretreated by extrusion crushing and high-frequency vibration crushing; mixing the pretreated materials in proportion, inoculating a compound microbial agent, and performing efficient fermentation under the condition of intelligent temperature and humidity control; and gelatinizing the fermentation product with sodium alginate and calcium chloride to prepare the slow-release gel particle organic fertilizer. According to the organic fertilizer production method disclosed by the invention, the fermentation period is shortened and the production efficiency is improved through the synergistic effect of quality-divided pretreatment and the complex microbial inoculants; waste and environmental pollution caused by burst release of nutrients are effectively avoided; the product has the characteristics of convenience in application and long-acting slow release, can be directly applied through a drip irrigation system, greatly reduces the labor intensity, and has remarkable economic and environmental benefits.

A process is disclosed for creating a shelf-stable, grain-free, plant-based food composition with a crisp texture and integrated seasoning. The food compositions taught herein exhibit a low moisture content, high fiber content, and a desirable crispness that is maintained even when combined with milk or milk alternatives, enabling use as a grain-free breakfast cereal.

The invention relates to the technical field of plant genetic engineering, in particular to application of an algae NySAT2 gene in regulation and control of alfalfa crude protein and detergent fiber. According to the invention, a sequence after codon optimization of an NySAT2 gene coding region is obtained by using gene synthesis and codon optimization technologies, an algae NySAT2 gene overexpression vector is constructed, a target gene is introduced into an alfalfa genome by using an agrobacterium rhizogenes mediated genetic transformation method, and a transgenic plant is obtained by using a genetic transformation system. Molecular identification and phenotypic analysis show that on the premise of keeping normal growth vigor (plant height and biomass have no significant difference from those of a wild type), the crude protein content of a medicago sativa plant with the overexpressed NySAT2 gene is remarkably increased compared with that of the wild type medicago sativa plant, and meanwhile, the contents of acid detergent fibers and neutral detergent fibers are remarkably reduced, so that the content of the crude protein in the medicago sativa plant with the overexpressed NySAT2 gene is remarkably increased. The forage quality and the feeding value of the medicago sativa are effectively improved.

The invention relates to the technical field of cashmere blended fabric dyeing, and discloses a one-bath one-step dyeing device and process based on cashmere blended fabric, comprising a dye vat, a dye barrel arranged on one side of the dye vat, a circulating pump arranged on one side of the dye barrel, a heating device fixedly mounted above the circulating pump, and a nozzle fixedly mounted in the dye vat; according to the dyeing device, the motor is used for driving the cloth lifting roller to rotate, the magnetic beads are limited through the limiting rings of different sizes, when the pressure borne by the cloth lifting roller is in different ranges, the magnetic beads can be clamped in the different limiting rings, and when the downward sliding distance of the cloth lifting roller is larger, the magnetic beads can be clamped in the different limiting rings. If the fabric is heavier, the content of the brewed protein fibers in the raw materials is higher, the tensile property of the fabric is better, and the power of the motor is controlled to be increased by the corresponding induction plate, so that the fabric can smoothly move in the dye vat, the fabric is prevented from being stacked, and meanwhile, the fabric is not deformed or wrinkled.

The utility model discloses a tailing fiber recycling device for a deslagging section. The tailing fiber recycling device comprises a feeding tank, a first multi-section deslagging device, a transverse deslagging device, a second multi-section deslagging device, a white water tank, a slag tank and an accepted pulp tank, a feeding hole of the first multi-section slag separator is communicated with the discharging end of the feeding tank, and a slag outlet in the bottom of the first multi-section slag separator is communicated with a feeding hole of the transverse slag separator; preliminary deslagging and filtering are carried out through the first multi-section deslagging device, filtered slag slurry enters the transverse deslagging device, and white water is pumped into the transverse deslagging device through the white water tank, so that the slag slurry is rotationally separated in the transverse deslagging device; and the formed accepted pulp is automatically returned to the first multi-section slag separator, is discharged from the accepted pulp opening after being subjected to slag discharge, and further fiber recovery is realized through mutual cooperation of the transverse slag separator, the first multi-section slag separator and the second multi-section slag separator, so that the fiber content in the slag pulp is lower, and the utilization rate of the fiber is improved.

The invention provides a high-thermal-conductivity low-modulus graphene fiber heat-conducting gasket and a preparation method thereof. Graphene fibers are directionally wound and impregnated to prepare a prepreg, the prepreg is laminated and bonded to form a high-orientation fiber plate, and then the high-orientation fiber plate is directionally cut in the direction perpendicular to the fibers to obtain the heat-conducting gasket composed of continuous vertical fibers and organic silicon. The fiber is of an X-shaped crossed network structure, and is combined with an elastic silica gel matrix to form a hinge-like structure which can be highly deformed under the orientation of 0.5-10 degrees and-10--0.5 degrees, so that the compression resilience and durability are remarkably improved, and meanwhile, efficient heat conduction is kept. According to the structure, the problems of buckling, fracture and stress concentration which are easily caused by traditional vertical or random arrangement are avoided. A one-way felt impregnation lamination cutting method is adopted, the processing problem caused by high filler is solved, the fiber content can reach 85.1 wt%, and the array density is 2.4-195.9 mg / cm. The gasket has high thermal conductivity, low modulus and excellent rebound resilience, and is suitable for thermal management of high-power electronic equipment such as electronic base stations, communication radars, new energy automobiles, aerospace and the like.

The invention discloses a method for improving the quality of ganoderma lucidum mushroom residues through synergistic fermentation of bacteria and enzymes and application of the method. According to the method disclosed by the invention, cellulase, beta-galactosidase and xylanase with proper concentrations and lactobacillus plantarum, bacillus subtilis and saccharomyces cerevisiae with proper proportions are adopted, and enzymes and bacteria are mutually cooperated, so that the characteristics of the raw materials are well balanced, the finally prepared ganoderma lucidum mushroom bran is high in protein content and low in fiber content, and the nutritional value of a feed is improved; the total amount of amino acids and essential amino acids are remarkably increased, and the feed protein quality can be improved; the rumen dry matter digestibility and energy metabolites are remarkably improved, and ruminant absorption and utilization are facilitated; the ganoderma lucidum mushroom bran fermented feed is added into the daily ration, so that the daily gain, the carcass rate and the dressing percentage of fed animals can be remarkably improved, the levels of serum GLU, TG, ALT and AST are reduced, the expression of key inflammatory cytokines (IL-1beta and IL-6) is inhibited, and the ganoderma lucidum mushroom bran fermented feed has the comprehensive effects of regulating glycolipid metabolism and relieving liver load and systemic inflammation, so that the immune function of animal bodies is improved.

The invention relates to a chopped fiber reinforcement-based modularized paddle main beam structure and a manufacturing method, and relates to the technical field of aircraft parts, the chopped fiber reinforcement-based modularized paddle main beam structure comprises a main beam body used for supporting a paddle, the main beam body is composed of a plurality of module units, the module units are made of chopped fiber reinforced composite materials, and the interior of each module unit is of a hollow structure; the gradient supporting pieces are arranged in the module units, each gradient supporting piece comprises a vertical strip and a transverse supporting strip, the vertical strips and the transverse supporting strips are arranged in a density stepped change mode, and the density of the ends, close to the connecting ends, of the vertical strips and the transverse supporting strips is large; according to the gradient supporting piece, the density stepped change design is adopted, high-fiber-content metal powder or metal powder mixed with the high-fiber-content metal powder is adopted close to the connecting end, and the rigidity, the abrasion resistance and the bolt pre-tightening force resisting capacity are improved; and the middle part adopts a low-density core material for weight reduction, so that the bending rigidity is kept while the overall weight is reduced, and the balance of light weight and high strength is realized.

A yarn comprising a filament core and a staple fiber sheath comprising or consisting of at least 95% by weight of a mixture of a first fiber and a second fiber wherein the first fiber is a natural cellulose fiber and the second fiber is a regenerated cellulose fiber. The weight ratio of the first fibers to the second fibers is in the range of 70 / 30 to 80 / 20, preferably the ratio is about 75 / 25, the average length of the fibers of the sheath is in the range of 10 to 25 mm, preferably in the range of 12 mm to 20 mm, the 5% (n) index of the fibers of the sheath is between 25 mm and 40 mm, preferably between 28 and 36 mm, more preferably between 30 and 34 mm; the sheath has a staple fiber content, SFC (n), between 30% and 70%, preferably between 40% and 60%; and the filament core comprises a plurality of polyester filaments.

The application discloses a preparation method of bio-modified wheat bran containing xylo-oligosaccharide, and comprises the following steps: fermenting wheat bran by using mixed strains and composite enzymes; wherein the mixed strains comprise lactic acid bacteria, Saccharomyces cerevisiae and Bacillus licheniformis; and the composite enzymes comprise cellulase and xylanase. The preparation method provided by the application effectively reduces the contents of crude fiber and neutral detergent fiber in the wheat bran, increases the contents of crude protein and xylo-oligosaccharide in the fermented wheat bran, which are beneficial to the growth and development of animals, and improves the nutritional value of the wheat bran, so that the proportion of the wheat bran in feed application can be increased, and the addition amount of corn and soybean meal can be reduced.

The invention relates to the field of building materials and fabricated structures, in particular to a light composite structure fabricated plate and a preparation method thereof, and aims to solve the technical problem that a current light composite plate is difficult to meet multiple performance requirements at the same time. A three-layer functional gradient structure is adopted and comprises a high-strength surface layer doped with calcium carbonate whiskers and polyethylene / steel fibers, a transition layer with gradually-changed fiber content and a bottom layer containing foamed ceramic aggregates and phase change microcapsules. After the connecting piece is pre-embedded in the mold, three layers of materials are sequentially coated, and the light steel truss is embedded in the transition layer to serve as a framework, so that the structural integrity is enhanced. In the forming process, the density and interface fusion of each layer of material are ensured by applying gradient vibration and pressurizing processes, and low-temperature stepped steam curing is adopted in the curing stage, so that the material obtains sufficient mechanical property development while maintaining the activity of functional components.

The present invention discloses a vibration frequency control method and device for a vibratory oil-tea camellia picking robot, and the present invention relates to the technical field of mechanical automation. The method includes the following steps: By acquiring oil-tea camellia fruit images at different growth stages and performing preprocessing, extracting image feature parameters, generating a training sample data set, and establishing and training a neural network model based on this data set to obtain a fruit feature extraction model. The image of the oil-tea camellia fruit to be picked is processed and then input into the model to predict its feature parameters and calculate the fruit appearance influence coefficient. At the same time, feature parameters such as the diameter of the fruit stalk, moisture content, and fiber content are obtained, and combined with the correction of the average environmental temperature and wind speed, the exact value of the fruit stalk toughness influence coefficient is calculated. Finally, according to the fruit stalk toughness and the fruit appearance influence coefficient, the vibration frequency is dynamically corrected, and the vibration frequency of the oil-tea camellia picking robot is set, reducing fruit damage.

The application relates to the field of additive manufacturing technology and discloses a 3D printing continuous fiber reinforced composite material path planning method based on the absolute maximum principal stress direction, which comprises the following steps: establishing a three-dimensional model of a structure to be formed, performing slice processing on the three-dimensional model to obtain a two-dimensional model of the structure to be formed and geometric characteristics thereof; setting material parameters and load constraints for the structure to be formed which needs to be subjected to additive manufacturing according to the requirements of forming materials and structure working conditions, and performing finite element simulation to derive finite element simulation calculation results of units; based on the finite element simulation calculation results, an original contour line based on a stress direction is calculated; and based on the calculated contour line based on the stress direction, an additive manufacturing path of the structure to be formed is obtained. The application improves the effect of improving the mechanical properties of continuous fiber composite material structures and improves the mechanical properties of composite material components under the premise of the same fiber content.

The application belongs to the technical field of ceramic materials, and particularly relates to a silicon nitride conductive ceramic and a preparation method thereof. The silicon nitride conductive ceramic provided by the application comprises a silicon nitride sintered body and carbon fibers embedded in the silicon nitride sintered body; the carbon fibers comprise carbon fibers in a three-dimensional network structure and free carbon fibers, and the mass of the carbon fibers in the three-dimensional network structure accounts for more than 97% of the total mass of the carbon fibers. Most of the carbon fibers are in a state of mutual connection, forming a conductive network, and the integrity of the conductive network does not suddenly break due to the gradual reduction of the fiber content, resulting in a sudden increase in resistance, but presents a slow increase in resistance effect; the conductivity of the overall material can be effectively controlled by the content of the carbon fibers. In the application, the content of the carbon fibers in the silicon nitride conductive ceramic is low, the sintering activity of the material is good, and the density is high, so that the material has good mechanical properties.

The invention discloses a super-soft and high-bulkiness melt-blown warm-keeping flocculus which is prepared from composite melt-blown fibers through airflow drafting, layered net forming and low-temperature shaping, and the composite melt-blown fibers comprise the following raw material components in percentage by weight: 10-15% of modified polylactic acid elastomer, 10-20% of polyester staple fiber, 10-20% of polyester staple fiber, 10-20% of polyester staple fiber, 10-20% of polyester fiber, 10-20% of polyester fiber, 10-20% of polyester fiber, 10-20% of polyester fiber, 10-20% of polyester fiber the content of the polypropylene melt-blown fiber is 65%-75%, the antistatic modifier is 1%-3%, and the softening agent is 0.5%-2%. The invention also discloses a preparation method of the melt-blown warm-keeping flocculus, the production process is simple, the raw materials in the formula are easy to obtain, and the production efficiency is high; the prepared warm-keeping flocculus is more excellent in warm-keeping performance, and compared with traditional warm-keeping materials such as down feather, cotton and cotton-like chemical fibers, the warm-keeping flocculus has the low-carbon and environment-friendly excellent comprehensive performance such as good compression resilience, water resistance, moisture absorption resistance, no caking after water washing, no reduction of the warm-keeping effect after outdoor water spraying and the like, and has a very wide application prospect.

The invention discloses a carbon fiber reinforced polyphenylene sulfide composite material which is prepared from the following components in parts by weight: 58.1 to 78.1 parts of polyphenylene sulfide resin, 10 to 40 parts of surface modified carbon fiber, 0.1 to 0.5 part of an internal lubrication flow improver, 0.2 to 0.5 part of a compound antioxidant and 0.4 to 1.2 parts of a compound lubricant. The carbon fiber reinforced polyphenylene sulfide composite material has the characteristics of high mechanical property, high strength, high heat resistance and permanent antistatic property. The surface of the carbon fiber is treated by adopting a strong oxidizing agent, and polar groups such as hydroxyl, carboxyl and epoxy group are introduced to enhance the surface activity; then, hydrobromic acid and thiourea are used for secondary modification, part of polar groups are converted into sulfydryl, and surface modified carbon fibers with the surfaces rich in sulfydryl are prepared; finally, the surface modified carbon fibers are uniformly dispersed in a polyphenylene sulfide matrix through a melt blending method, the carbon fiber reinforced polyphenylene sulfide composite material is prepared, and the heat resistance, the heat conductivity and the electrical conductivity are synchronously optimized due to the increase of the content of the surface modified carbon fibers.

The application discloses a method and equipment for producing multipurpose thermoplastic composite materials in one step, and the method comprises the following steps: vertically conveying continuous reinforced fiber bundles and stitching felt downward, so that the continuous reinforced fiber bundles and the stitching felt pass through a preheating and pressurizing cavity filled with a molten metal medium and a resin infiltration cavity filled with a thermoplastic resin melt in sequence, and the two cavities are isolated by a U-shaped or S-shaped return bending structure; and shaping in a forming and cooling mold, pulling out by a traction device and cutting by a cutting device. The application utilizes a liquid column of the molten metal medium to improve static pressure and preheat, and solves the problems of insufficient fiber infiltration and process limitations in the prior art; the application can realize continuous manufacturing of high-fiber-content thermoplastic composite materials, and the obtained composite materials have the characteristics of sufficient infiltration, low porosity and excellent mechanical properties; and the produced thermoplastic composite materials are widely applied in the fields of aerospace, automobile manufacturing, building, furniture production and the like, and can replace aluminum profiles, wood, steel and the like.

A fiber processing system includes a fiber processing unit having an inlet, accepts outlet, and solid discharge outlet and configured to remove solid contaminants from a fiber-containing stream to produce an accepts stream exiting the accepts outlet and a solid discharge stream exiting the solid discharge outlet. The fiber processing system includes an optical system having an imaging device and image processing system. The imaging device is configured to capture images of the solid discharge stream at or downstream of the solid discharge outlet, and the image processing system is configured to determine relative fiber content, a relative generation rate, types of materials in, or combinations thereof of the solid discharge stream from the captured images. The fiber content, generation rate, and / or types of materials of the solid discharge stream are used to control operation of the fiber processing system or other upstream pulp processing equipment.

The utility model relates to the technical field of fiber testers, in particular to a nep and short fiber tester which comprises a testing box and mutually symmetrical connecting plates arranged on the two sides of the upper end face of the testing box, laser sensors are arranged in the middles of the upper ends of the two sets of connecting plates, and a motor is arranged on one side of the outer wall of each connecting plate. The output end of the motor is connected with a two-way lead screw, the outer wall of the two-way lead screw is sleeved with two sets of symmetrical ball screw sleeves, and the outer wall of one side of each ball screw sleeve is provided with a fixing assembly. After neps are fixed, the high-speed fan is started, high-speed airflow is blown into the air collecting cover through the air outlet pipe and blown out through the air holes formed in the upper end of the ventilation disc, the high-speed airflow blown out of the air holes can open cotton fibers, fiber sections are prevented from being too dense, and the interference amount of the fiber sections to light is increased; therefore, certain interference is caused to the determination of nep quantity and short fiber content.

The invention relates to a preparation method and device of a continuous fiber reinforced thermoplastic resin composite material, and the preparation method comprises the following steps: carrying out dipping treatment on continuous fibers in a resin solution to obtain dipped fibers; carrying out extrusion treatment on the impregnated fibers to obtain impregnated and glue-pressed fibers; and carrying out drying treatment on the fibers subjected to impregnation and adhesive pressing, so as to prepare the continuous fiber reinforced thermoplastic resin composite material. According to the preparation method of the continuous fiber reinforced thermoplastic resin composite material provided by the embodiment of the invention, the continuous fiber reinforced thermoplastic resin composite material with high fiber content and better mechanical properties can be prepared.

The application provides a high-performance carbon ceramic brake disc, which comprises a base area and a connecting area, wherein the connecting area is arranged in the base area in a ring shape and is fixedly connected with the base area as a whole. The connecting area is provided with a plurality of connecting holes which are uniformly distributed along the circumferential direction of the high-performance carbon ceramic brake disc. The total content of carbon fibers and carbon in the base area is 45-55 vol%, the content of silicon carbide is 40-50 vol%, and the content of silicon is 5-10 vol%. The total content of carbon fibers and carbon in the connecting area is 55-65 vol%, the content of silicon carbide is 30-40 vol%, and the content of silicon is 5-10 vol%. The total content of carbon fibers and carbon in the connecting area is 5-10 vol% higher than that in the base area. The carbon ceramic brake disc is divided into the base area and the connecting area, the base area and the connecting area have different fiber contents and fiber orientations, the fiber content of the connecting area is higher and the silicon carbide content is lower, and the fibers have an orientation, so that the material strength of the connecting area is ensured and cracking is not prone to occur during friction.

The invention relates to the technical field of environment-friendly plant element leather, in particular to bio-based synthetic leather with high rose fiber content and a preparation method of the bio-based synthetic leather. The invention provides bio-based synthetic leather with high rose fiber content. The bio-based synthetic leather comprises base cloth and the following raw material components in parts by weight: 300-430 parts of EN25 type bio-based resin; 500 to 600 parts of rose fiber; 2-3 parts of a bio-based cross-linking agent; 1-3 parts of an activation dispersant; 0.5 to 2 parts of an accelerant; and 1-2 parts of a bio-based plasticizer. The bio-based synthetic leather provided by the invention is high in plant fiber content, and has good bending resistance, hydrolysis resistance and cracking resistance.