181 results about "Fiber roll" patented technology

An object of the present invention is to provide a spiral membrane element that can improve the barrier property of a fiber reinforced plastic layer having a fiber roll as a reinforcing phase and that can effectively prevent occurrence of cracks. The spiral membrane element of the present invention is a spiral membrane element containing a cylindrical roll R in which a separation membrane, a feed-side flow passageway member, and a permeate-side flow passageway member are spirally wound in a laminate state around a perforated center tube 5 and in which a sealing part for preventing mixing of feed-side fluid and permeate-side fluid is disposed, wherein a fiber reinforced plastic layer 26 having a fiber roll as a reinforcing phase is formed on the outer circumferential side of said cylindrical roll R, and a plastic layer 24 is disposed in the inner part or on the inner side of the fiber reinforced plastic layer 26 approximately over the entire length and approximately over the entire circumference of the fiber reinforced plastic layer 26.

The invention relates to thermoplastic prepreg prepared through a continuous laminating method and a method thereof. An existing laminating method for preparing the thermoplastic prepreg adopts intermittent production and is low in production efficiency. According to the method, two resin film rolls are arranged above and below a reinforced fiber roll respectively, and take-up operation is executed through a take-up device. Impurity removing and drying nozzles are arranged on the advancing path of reinforced fibers and resin films, the reinforced fibers and the resin films are converged to directional roller sets opposite vertically to be positioned and are preheated through preheating equipment sets opposite vertically, the positioned and preheated reinforced fibers and the resin films pass through continuous laminating equipment sets which are each provided with a heating and cooling device and are opposite vertically for preimpregnation, and the prepreg is obtained through paying-off and edge cutting operations. The continuous process is adopted, the production efficiency is greatly improved, pretension is exerted on resin and the fibers controllably by adjusting linear speed of each section in the preparation process, and the performance of the thermoplastic prepreg is improved.

The invention relates to an airgel material reinforced by fiber reinforcement and its preparation method. The width of the material is 0.5-1.5 meters, and the length is 5-30 meters. Its composition includes silicon dioxide airgel and reinforced continuous fiber, and its weight ratio is 1:0.5-2.5. The present invention also relates to (1), limiting and winding the continuous reinforcing fiber into a winding unit while keeping a certain gap between the continuous fibers; (2), disposing silicon alkoxide, alcohol solvent and basic catalyst according to a certain ratio (3) Immerse the silica sol into the continuous reinforcing fiber winding unit through the impregnation process; (4) After the silica gel is aged for a certain period of time, the surface is treated with a hydrophobizing agent; (5) The silica gel containing silica gel The continuous fiber winding unit of glue is supercritically dried. The material prepared by the invention has large specific surface area and low thermal conductivity, and can be applied in many fields such as fire retardation, sound insulation, gas adsorption and the like.

The invention relates to a graphene polylactic acid bicomponent composite fiber and a preparation method and equipment thereof, and belongs to the technical field of melt-spinning fibers. The preparation method comprises the following steps: respectively drying and mixing 60-75wt% of polylactic acid slices and 25-40wt% of graphene master batches to obtain a component A; drying the polylactic acidslices as a component B; respectively melting and extruding the component A and the component B, and then spinning together. The bicomponent composite fiber prepared by the graphene polylactic acid bicomponent composite fiber and preparation method and equipment thereof has obvious crimping effect, excellent elasticity and fluffiness, and good effects of strength, wear resistance, heat preservation, bacteriostasis and conduction.

The invention relates to a three-dimensional crimped low-melting-point polyester fiber and a preparation method thereof. The method includes the following steps that low-melting-point polyester and conventional polyester are taken as a skin-layer component and a core-layer component respectively, and the three-dimensional crimped low-melting-point polyester fiber is then prepared by using a skin-core composite spinning method; the skin-core composite spinning method adopts a skin-core composite spinning assembly, a flow guide hole in a guide plate corresponding to the core-layer component in the assembly and a spinneret orifice in a spinneret plate corresponding to the skin-layer component in the assembly are same in cross section shape, the edge of the cross section of the spinneret orifice is formed by connecting an arc, a line segment a and a line segment b in sequence, the arc refers to the circular arc or the elliptic arc, the connection point of the line segment a and the line segment b is located at the center of a circle corresponding to the circular arc or at the center of an ellipse corresponding to the elliptic arc, and the included angle of the line segment a and the line segment b is 10-170 degrees. The crispation number of the prepared three-dimensional crimped low-melting-point polyester fiber is 12-25 piece/25 mm, and the crimp percentage is 8-20%. The preparation method is simple, and the prepared polyester fiber is excellent in three-dimensional feeling and comfort level.

The invention discloses a bamboo fiber rolling machine. A lower annular belt is one section longer than an upper annular belt and forms a raw material feeding area; a raw material clamping and conveying area is formed between the upper annular belt and the lower annular belt; the upper annular belt is provided with a front upper main roll and a rear upper main roll; a plurality of upper pressing rolls arranged straight are arranged between the front upper main roll and the rear upper main roll; the lower annular belt is provided with a front lower first main roll, a front lower second main roll and a rear lower main roll; the front lower second main roll corresponds to the front upper main roll on position; lower pressing rolls arranged straight with consistent number are arranged betweenthe front lower second main roll and the rear lower main roll; the positions of the upper pressing rolls and the lower pressing rolls correspond one by one; and jaws are formed between the related upper pressing rolls and the related lower pressing rolls and between a pair of corresponding upper pressing roll and lower pressing roll. The bamboo fiber rolling machine can realize continuous feed, can continuously and repeatedly roll the raw material on the advancing route of the raw material, and has the characteristics of good rolling effect, relieve of labor intensity, high production efficiency and the like.

A textile carding machine has a feed roller advancing a non-woven fibres to a separation roller. The foreign body separation hole is disposed in the discharge roller zone to separate the fiber and the foreign body. The outlet has a discharge passage with a discharge zone and an air flow zone. The foreign body outlet zone is disposed in the zone of foreign body separation hole and separated from the air flow zone. A curtain is arranged in the foreign body separation zone and air flow zone for the purpose of preventing against interference of the discharge of the foreign body inside the air flow.

The invention relates to a production method for refined hemp and regenerated cellulose fiber high-count blended yarns. The step comprises the following steps: 1, performing health-preserving pretreatment on hemp fibers, including using an oiling agent to uniformly spray the hemp fibers, performing conditioning and oil supply treatment on the hemp fibers; 2, performing a blowing-carding procedure, including (1) opening, (2) removing impurities, (3) blending, (4) uniformly coiling; 3, performing a cotton carding procedure, including performing cotton carding processing on hemp viscose fiber rolls through a carding machine, the hemp viscose fiber rolls being treated by a lapper; 4, performing a drawing and roving procedure, including sending drawing which is processed by combing and pre-drawing procedures to a roving frame, and the drawing winding into rough yarns through the roving frame; 5, performing a spun yarn procedure, including sending the rough yarns to a spinning frame which uses compact siro spinning double aprons to draft, the rough yarns being drawn, through drafting, twisting, and winding, the yarns forming spun yarn cops. Beneficial effects of the method are that the processing varieties of hemp fiber yarns are expanded, processing of high-proportion hemp and high-count hemp blended yarns is realized, and high-quality of yarns is realized.

The invention relates to a preparation method of an aerogel felt. The method comprises the following steps: laying flow guide pipes between layers of fiber roll felts or fiber sheet felts, arranging a plurality of gel injection holes in the flow guide pipe, pumping catalyzed silicon dioxide sol through the flow guide pipe or sequentially pumping the silicon dioxide sol and a gel catalyst through the flow guide pipe, dipping the fiber felt in the catalyzed silicon dioxide sol or the silicon dioxide sol and a gel catalyst to form a wet gel felt, and then drying the wet gel felt to obtain the aerogel felt. The flow guide pipes are evenly laid in the fiber roll felt or between the stacked fiber sheet felts, the glue injection holes are evenly distributed in the flow guide pipes, sol is evenly injected between the fiber felts through the glue injection holes, and the two faces of the fiber felt body can be impregnated, so that the problem that in the discontinuous production process, impregnation is not uniform due to spraying single-face impregnation is avoided; the fiber felt body is evenly impregnated, and the prepared aerogel felt is uniform and stable in performance; and the fiber felt body is fully impregnated, and the prepared aerogel felt is low in heat conductivity coefficient.

The invention provides components, structures, methods, and assemblies for controlling sedimentation and debris flow associated with soil erosion. The invention also provides components, structures, methods, and assemblies that are useful for anchoring fiber rolls along a sloped surface.

The present invention discloses a fibre polishing wheel, which is prepared by the following mixture and fibre material: (a) the proportions of the mixture: 100 portions of natural latex, 0.5 portions of zinc oxide, 0.2 portions of age inhibitor DNP, 0.8 portions of age inhibitor 264, 0.3 portions of casein, 0.05 to 0.1 portions of potassium hydroxide, 0.5 portions of lanoline, 1 portion of accelerant PX, 1 portion of sulfur and 135.655 portions of sand; (b) the weight portion proportion of the fibre material and the mixture: 1 : 7 to 8; (c) the preparation method: (1) the zinc oxide, the age inhibitor DNP, the age inhibitor 264, the casein, the potassium hydroxide, the lanoline, the accelerant PX, the sulfur and the sand are uniformly mixed for later use; (2) The material of the first step is uniformly mixed with natural latex; (3) the material of the second step is uniformly mixed with the fibre material and then is squeezed in a rolling machine, so that the material is uniformly immerged into fibre; (4) the material-immerged fibre of the third step is rolled up and placed into a mould, which is then put into a thermotank and heated, and finally, after vulcanization, a finished product is obtained. The present invention has the advantage of that the polishing effect is obvious.

The invention relates to a polymer optical fiber preform stretching device, which adopts technical proposal that: the device comprises a tower frame, and a preform feed device, a heating stretching furnace, a diameter-measuring instrument, a main traction device, an annealing oven, a coating device and a fiber rolling device that are arranged on the tower frame, wherein the preform feeding device is arranged above the heating stretching furnace, the diameter-measuring instrument is arranged below the heating stretching furnace, the main traction device is arranged below the diameter-measuring instrument, the fiber rolling device is arranged below the coating device, the heating stretching furnace comprises a preform stretching area and a preform softening area, the preform stretching area is arranged above the preform softening area. The stretching device has the advantages of high yield and large-scale industrial production.

The invention relates to the processing field of bamboo products, in particular to a bamboo fiber and a preparation method thereof. According to the invention, by adopting clustered bamboos as a raw material, the filament bamboo fiber with the diameter of 0.5-2 mm and the length of at least 0.5 m is prepared. The preparation method for the bamboo fiber comprises the following steps: a, selecting a green bamboo pole and breaking the green bamboo pole; b, selectively heating the broken bamboo; c, rolling the heated bamboo piece into the bamboo fiber; d, treating the bamboo fiber rolled through the former process with an acid material; e, cutting the bamboo material into required fiber length; f, cleaning, dehydrating and drying so as to obtain the bamboo fiber which can be used directly. A chemical agent is not used in preparation of the bamboo fiber, the preparation process is simple, the production cost is low and the prepared natural bamboo fiber has the good properties of moisture absorption, air permeability, bacteria resistance and bacteriostasis, ultraviolet prevention and the like, meets the national industrial development policy and facilitates environmental protection.

The invention relates to technology for processing soybean fiber and tencel fiber color-blended knitting fabric. Most of the knitting fabrics sold in market at present are dyed after textiles are prepared by weaving pure yarns or blended yarns. But the knitting fabrics prepared by blending soybean fibers and tencel fibers have poor dyeing effect if dyed by the conventional dyeing technology. The technology comprises the following steps of: opening the soybean fibers and tencel fibers, putting the soybean fibers and tencel fibers into dyeing solution mixed with DHF for 1 hour, carrying out thepreprocessing processes of raising the temperature, preserving the heat, reducing the temperature, dehydrating and the like, and preparing the soybean fibers and tencel fibers into soybean fiber and tencel fiber rolls by a blowing process; processing the soybean fiber and tencel fiber rolls into soybean fiber and tencel fiber strips on a carding machine provided with novel card covering; preparingthe soybean fiber and tencel fiber strips into blended yarns by roving and spinning processes; and weaving and finishing the blended yarns to obtain the color-blended knitting fabrics. The technologyhas the advantages of advanced technological method, strong feasibility, stable technology, good color effect of the fabrics, environmental protection and energy conservation and the like, and solvesthe problems.

The invention relates to a method for melting spinning and flexible blowing of fibers and a product thereof, in particular to a melting spinning method of random differential air cooling in spinning forming of clothing fibers and a product thereof. In the method provided by the invention, in the process of the melting spinning, the air speed of the air cooling is controlled by pulse signals to change according to a law that the air speed satisfies an equation V(t)=S+ sin omega t. The invention also provides a fiber, wherein the crimp elasticity recovery rate of the fiber is 85-98%; after being stretched, the fiber is three-dimensionally crimped; under the condition that the total drawing ratio is 1.4-5.5, the final fiber crimp number is 7-15/25mm; and the distribution number of the fiber crimp number in a range of 11-19/25mm is more than 50% of the total distribution ratio of the crimp number. In the invention, the method of air cooling differentiation is adopted at a key area of the melting spinning and cooling forming to ensure that the problem that the forming and the winding of polyamide precursor fibers can be normally carried out while the difference of internal crystal orientation of the fibers as well as the profile degree and the differentiation of the morphological structure of the polyamide fibers can be guaranteed is solved, therefore, the purpose of synthetic fiber simulation is achieved.

The invention discloses a halogen-free ammonia-free aerogel composite coiled material produced by a supercritical process. The aerogel composite coiled material has the density of 160-180 kg/m<3>, theheat conductivity coefficient of less than or equal to 0.018 W/(m.K), the hydrophobicity of more than or equal to 99.5% and the vibration mass loss rate of less than 0.1%. A preparation process of the aerogel composite coiled material comprises the following steps: S1, adding ethanol and water into tetraethoxysilane serving as a raw material, and keeping the temperature at 50 DEG C for 24 hours to obtain a first mixed solution; adding ammonia-free alkali into the modified organic silicon ester, ethanol and water to obtain a second mixed solution; S2, mixing the first mixed solution and the second mixed solution in proportion to obtain a third mixed solution, and immersing a fiber coiled material in the third mixed solution to form a gel composite coiled material; and S3, carrying out supercritical drying on the gel composite coiled material to obtain the halogen-free ammonia-free aerogel composite coiled material. The product does not contain halogen elements, does not volatilize ammonia-containing irritant gas at a high temperature, and can be used for heat insulation and preservation in an indoor high-temperature environment and fire prevention and heat insulation under a thermal instability condition.

The invention belongs to the technical field of the textile industry, and particularly relates to plasma modified waterproof oil-proof stain-proof fibers and a preparation method and application thereof. The preparation method of the plasma modified waterproof oil-proof stain-proof fibers comprises the following steps of: S1, respectively carrying out plasma treatment and waterproof oil-proof stain-proof treatment on single-stranded fibers; and S2, carrying out winding forming on the single-stranded fibers treated by the step S1. According to the invention, a waterproof oil-proof stain-proof agent and molecular chains of the fibers are combined in a mode of chemical bonds to form one whole body, so that not only are problems of washing resistance, endurance and durability solved, but alsoa cost problem and an environmental protection problem are solved. A double-knitted fabric formed by knitting the fibers disclosed by the invention and conventional fibers can implement a special fiber of which one side is waterproof and the other side absorbs water; by testing, before and after washing, the double-knitted fabric has wettability of over 5 levels, a stain release property of over 4to 5 levels and oil repellency of over 6 levels; and moreover, in the preparation process, by a new principle and a new process, flow is reduced, energy consumption is reduced, and cost is reduced.

The invention discloses a spinning process. The whole process flow includes: sequentially passing the combed waste through the cleaning process → carding process → drawing process → air spinning process; in the cleaning process, the combed waste is sequentially used by automatic Cotton plucking machine, first-level opener, second-level opener, vibrating box feeder, and single-hand lapping machine are processed to obtain combed noil fiber rolls; the rolled combed noil fiber rolls are carded Machine treatment to obtain cotton fiber slivers; the cotton slivers obtained in the drawing process are fed to the rotor spinning machine, and the cotton yarn products obtained by air spinning are fed to the cotton fiber slivers obtained in the carding process to be fed to the drawing frame to make cotton slivers. Feed to the rotor spinning machine; this process can effectively reduce fiber damage, less waste, high twist coefficient, uniform and stable cotton yarn product quality, and the strength value is about 8-10% higher than the existing technology.

The invention provides a method and device for testing the tensile strength of monofilaments. The method includes the steps of taking multiple samples from a fiber coil to be tested, wherein each sample comprises multiple monofilaments; conducting testing through a monofilament tensile tester to obtain tensile strength data of the monofilaments corresponding to each sample; averaging the tensile strength data of the monofilaments of all the samples to form the average values of the tensile strength of the monofilaments of the samples; secondarily averaging the average values of the tensile strength data of the monofilaments of all the samples, calculating the dispersion coefficient, and treating the dispersion coefficient as the parameter of the tensile strength of the monofilaments of the fiber coil to be tested. On the basis of the method and device, the test errors of the fiber strength can be reduced, and test efficiency can be improved.

The invention provides a soft porcelain material feeding device. The device comprises a hopper, wherein a conveying belt is arranged below the hopper; and a fiber roll is arranged on the upstream of the bottom of the hopper, a pressing roller is arranged at the downstream of the bottom of the hopper, the pressing roller is tightly pressed on the upper surface of the upper layer of the conveying belt, and after a sheet-shaped fiber net of the fiber roll passing the bottom of the hopper, the sheet-shaped fiber net is arranged between the pressing roller and the conveying belt. According to the device, through the arrangement of the fiber roll, fibers can be added into soft porcelain material in a net-like mode, the labor intensity of adding the fibers can be reduced while the continuous production of soft magnetic sheets is realized, and the efficiency of adding the fibers is improved; the soft porcelain material can be uniformly spread on the surface of the conveying belt through the arrangement of a material uniform roller, so that the quality of soft magnetic sheet finished products is improved; and material blocking plates and the material uniform roller are of a mounting structure capable of adjusting the height, and therefore the thickness of soft magnetic sheet semi-finished products can be finally controlled by controlling the paving thickness of the soft porcelain materials.

The invention provides a tobacco sheet physical property prediction mode establishment method. The method comprises the following steps of performing flexible defibering on different tobacco sheet samples, determining the fiber length, width and roughness, the fiber roll curvature, the fiber twist index and the fine fiber content, establishing a linear relation with the tobacco sheet physical property, and carrying out rapid prediction on the tobacco sheet physical property based on the relation. According to the method disclosed by the invention, the rapid prediction of the physical properties of the tobacco sheet can be directly carried out through the morphology analysis of the slurry fiber under a factory condition, the problem that the existing sample detection data lags behind the production operation is solved, the detection time of the key physical property of the sample is saved, and the online regulation and control of the product quality are realized.

The invention relates to a cutting device for chopped glue-dipped fibers (resin glue or asphalt or other glue liquid), in particular to a device for fiber glue-dipping technologies, drying and centralized cutting. The device comprises a fiber roll fixing frame, a fiber glue-dipping link and a fiber drying and cutting link. The fiber roll fixing frame is provided with a plurality of rolling shafts and a fiber guide fence. After the fibers pass through the guide fence, the distance between the fibers needs to be adjusted through limiting plates, and then the fibers are guided in glue liquid through the rolling shafts; and the dipped fibers are hardened through a drying box, and finally the fibers are cut into short strips by a cutter and then fall into a collecting box.