136 results about "Fiber suspension" patented technology

The invention discloses a continuous bamboo fiber preparation method, and belongs to the technical field of bamboo fiber preparation. The blasted bamboo wood is subjected to enzymolysis; the bamboo wood subjected to enzymolysis is conveyed into a separator to be continuously separated, and fiber bundles are obtained; preparing a fiber suspension from the fiber bundles, and screening to obtain purified fiber bundles; the purified fiber bundles are drafted; freezing the drafted fiber bundles, then unfreezing the fiber bundles, and then drying the fiber bundles to obtain the continuous bamboo fibers. By adopting the continuous bamboo fiber preparation method disclosed by the invention, the bamboo fibers with excellent performance, high purity and good uniformity can be prepared, the problems of poor fiber quality, insufficient stability and the like existing in a traditional method are effectively solved, the production efficiency can be improved, the environmental pollution and energy consumption are reduced, the production cost is reduced, and the method is suitable for industrial production. And high performance, continuity and green economy are considered.

The present invention discloses a primary biomass fiber-pollen blended bioplastic and its preparation method and application, relating to the field of bioplastic technology. The preparation method of the bioplastic is as follows: taking natural fiber, crushing it, adding water and stirring to form a fiber suspension; taking natural pollen to clean and remove impurities and lipids on the surface, using alkali solution for stirring treatment, washing the mixed system to neutrality and filtering to remove excess water to obtain pollen microgel; mixing the fiber suspension and pollen microgel evenly to obtain a mixed slurry; applying the mixed slurry on a mold, drying and peeling it off to obtain primary biomass fiber-pollen blended bioplastic. The primary biomass fiber-pollen blended bioplastic provided by the present invention has high mechanical strength, can be easily water-shaped and water-spliced, and has good recyclability and biodegradability; its preparation method utilizes a large amount of waste or low-value-added biomass resources, has a simple process, low production cost, and less environmental pollution.

The invention provides a flame-retardant polyarylester nanofiber and a preparation method thereof, and belongs to the field of polyarylester nanofibers.The preparation method comprises the steps that PAR particles and a flame retardant are subjected to plasma treatment, and activated PAR and an activated flame retardant are obtained; melting the activated PAR particles, adding an activated flame retardant, shearing and mixing to obtain a blended melt, extruding through a spinneret plate, cooling and winding to obtain nascent fibers; shearing the nascent fibers into short fibers, and carrying out ball milling by taking absolute ethyl alcohol as a medium to obtain a fiber suspension; and adding an activated flame retardant and an initiator into the fiber suspension for reaction, and carrying out suction filtration, washing and vacuum drying to obtain the flame-retardant polyarylester nanofiber. According to the invention, an innovative'plasma synergistic activation-melt blending-free radical grafting 'composite process and a flame retardant molecular-level bonding formula are adopted, so that the problems of the traditional physical blending flame-retardant fiber in the aspects of dispersity, mobility and interface bonding strength are effectively solved.

The invention discloses a sepiolite fiber with high length-diameter ratio and high dispersity and a preparation method and application thereof, and the sepiolite fiber is prepared according to the following steps: (1) mixing sepiolite raw ore with water to prepare slurry with the solid content of 5-20wt%; (2) adding the slurry into a high-shear homogenizing emulsifying machine, and performing shearing treatment at the rotating speed of 6000-15000rpm to realize protective physical stripping of sepiolite fiber bundles; (3) carrying out centrifugal separation on the slurry subjected to shearing treatment to obtain a sepiolite fiber suspension with good dispersion; and (4) the sepiolite fiber suspension is subjected to pre-freezing treatment and then subjected to programmed temperature control freeze drying under the vacuum condition, and the freeze drying process comprises at least one low-temperature sublimation platform stage at the temperature ranging from-30 DEG C to-10 DEG C. The sepiolite-based thickening material with excellent thickening performance and stability is successfully prepared by innovatively optimizing high-speed shearing and emulsifying process parameters and combining a rheological property regulation and control technology.

The invention discloses a special medicament for purified cotton wastewater pollution treatment. The special medicament comprises the following components in parts by weight: 40-60 parts of modified attapulgite powder, 15-25 parts of a persulfate activator, 10-20 parts of an organic polymer compound, 8-15 parts of a mineral regulator, 2-5 parts of anhydrous sodium silicate and 3-6 parts of a hydroxyapatite whisker and calcium sulfate whisker compound. The invention also discloses a preparation method and application of the compound. According to the agent disclosed by the invention, through the synergistic effect of various functional components, the functions of advanced oxidation, adsorption bridging and flocculation settling assisting are integrated, COD (Chemical Oxygen Demand), lignin and short fiber suspended matters in the refined cotton wastewater can be efficiently removed, the formed floc is dense and high in settling speed, and the treated effluent can be recycled.

The present invention relates to an apparatus for cleaning a fiber suspension, the apparatus having a plurality of hydrocyclones (1) arranged side by side in a row, each hydrocyclone having at least one inlet connector (2), at least one qualified material connector (3) and at least one waste material connector (4), the apparatus having at least one supply manifold (5) and / or at least one qualified material manifold (6) and / or at least one waste material manifold (7), the supply manifold being connected to the plurality of inlet connectors (2) to supply the fiber suspension, the qualified material manifold being connected to the plurality of qualified material connectors (3) to discharge qualified material, and the waste material manifold being connected to the plurality of waste material connectors (4) to discharge waste material, wherein the manifolds (5, 6, 7) are designed to be elongated and the corresponding connectors (2, 3, 4) are connected to the corresponding manifolds (5, 6, 7) on their longitudinal sides. Deposition in the manifolds (5, 6, 7) should be suppressed by means that at least one end of the manifold (5, 6, 7) after the last hydrocyclone (1) is introduced into or out of the manifold (5, 6, 7) through a flushing joint (8).

An accept tank arrangement for mixing of pulped fiber suspension including sidewalls (3,4) including opposite arched ends (2) and an elongated section (1) between the arched ends (2). The accept tank has mixers (10) each located within one of the arched ends (2). The mixers (10) have axles (11) on which are mounted propellers (12). The mixers (10) are aligned horizontally and each axle points to a respective point on the elongated section (1) of the sidewall (3) which away from an end of the elongate section by at least 25% of the length of the elongated section (1). The propellers (12) are symmetrically positioned with respect to a center-point of the accept tank. Within the center of the elongated section is an elongated centerpiece (6) having rounded ends. The accept tank has a substantially flat bottom at least at the elongated section (1) of the accept tank.

The application provides a kind of flame-retardant polyarylate nanofiber and its preparation method, belong to polyarylate nanofiber field, wherein, by plasma treatment, activated PAR and activated flame retardant are obtained by respectively making PAR particles and flame retardant;After the activated PAR particles are melted, the activated flame retardant is added, and the blending melt is obtained by shearing mixing, extruded by spinneret, cools and winds, and the nascent fiber is obtained;The nascent fiber is sheared into short fibers, and the fiber suspension is obtained by ball milling with anhydrous ethanol as medium;Activated flame retardant and initiator are added to the fiber suspension for reaction, and the flame-retardant polyarylate nanofiber is obtained by suction filtration, washing and vacuum drying.The application adopts an innovative "plasma synergistic activation-melt blending-radical grafting" composite process and flame retardant molecular bonding formula, which effectively solves the problems of dispersion, migration and interface bonding strength of traditional physical blending flame-retardant fiber.

A system (100) for manufacturing a fiber web (1) is proposed, comprising a distributor (2) and a headbox (3) for wetting fibers to form the fiber web (1). A tube bundle (4) is provided between the distributor (2) and the headbox (3) for introducing a fiber suspension from the distributor (2) into the headbox (3). A valve (5) is arranged on a plurality of tubes (4.1) at the lateral edges of the tube bundle (4) for selectively allowing the fiber suspension to pass from the distributor (2) into the headbox (3) or a substitute liquid to pass from a liquid supply (6) into the headbox (3). Furthermore, a method for manufacturing a fiber web (1) is proposed.

Activable pectin-containing citrus fiber, characterized in that the activatable pectin-containing citrus fiber has a yield stress II (crossover) in a 2.5 wt% fiber suspension in demineralized water of 0.1 - 1.0 Pa and a dynamic Weissenberg number in a 2.5 wt% fiber suspension in demineralized water of 4.5 - 8.0, wherein the activatable pectin-containing citrus fiber is obtained by a process comprising: a. Providing a raw material containing cell wall material of an edible citrus fruit; b. Digestion of the raw material by incubation of an aqueous suspension of the raw material at an acidic pH value; c. Single- or multi-stage separation of the digested material from step (b) from the aqueous liquid; d. Washing the material separated in step (c) with an aqueous solution, wherein the aqueous solution is water, deionized water or a salt solution with an ionic strength of l < 0.2 mol / l, and separation of coarse or undigested particles; e. Separation of the washed material from step (d) from the aqueous liquid; f. Washing the separated material from step (e) at least twice with an organic solvent, with subsequent separation of the washed material from the organic solvent each time; g. Drying of the material from step (f) comprising drying at normal pressure to obtain the activatable pectin-containing citrus fiber; wherein the activatable pectin-containing citrus fiber obtained has less than 10 wt.% water-soluble pectin and a yield stress l (rotation) in a 2.5 wt.% fiber dispersion in demineralized water of 1.0 to 4.0 Pa.

The invention relates to a method for producing a multilayer board in a cardboard machine. The multilayer board comprises at least two layers. A first fiber suspension comprising cellulosic fibers is obtained for the first layer and a second fiber suspension comprising cellulosic fibers is obtained for the second layer, the first and second fiber suspensions being different from each other and at least one of them comprising recycled cellulosic fibers. A multi-ply web is formed by combining a first ply and a second ply with each other, and then the web is wet-pressed at a press section. An acetaldehyde acidified polyacrylamide having a number average molecular weight of at least 15000 g / mol is added to the first fiber suspension and / or the second fiber suspension prior to forming the first layer and the second layer.

A method and system for foam forming a web is disclosed. The method includes depositing a first foamed fiber suspension onto a forming surface as the forming surface moves to form a green web, and depositing a second foamed fiber suspension onto the green web as the forming surface moves to form another layer on the green web. The angled end of the partition sheet directs a flow of a second foamed fiber suspension proximate the angled end of the partition sheet substantially parallel to the forming surface.

A preparation method for a separator for lithium thionyl chloride batteries. The preparation method comprises the following steps: (1) adding inorganic fibers and flexible fibers to water, and mixing and dispersing same to obtain a mixed fiber suspension; (2) subjecting the mixed suspension to slurry spreading, and forming same into a wet paper sheet; and (3) applying an adhesive to the surface of the wet paper sheet, and drying same to obtain a separator for lithium thionyl chloride batteries. Inorganic fibers are used as the main material for the battery separator, thereby ensuring the safety performance of the battery separator in a high-temperature environment. Moreover, the battery separator can absorb excess electrolyte to participate in reactions at positive and negative electrodes of a battery, thereby ensuring that the battery has good charging and discharging performance. Furthermore, flexible fibers, an adhesive and inorganic fibers are combined to form the battery separator, wherein the flexible fibers and the adhesive can work synergistically, improving both the strength and ductility of the battery separator, thereby significantly enhancing the assembly capability of the battery separator.

The invention discloses a preparation method of a polyacrylonitrile core material, a vacuum insulation board, a preparation method of the vacuum insulation board and thermal insulation equipment, and belongs to the technical field of vacuum thermal insulation materials. Comprising the following steps: dispersing organic fibers in a liquid to obtain an organic fiber suspension; the organic fiber suspension liquid is subjected to wet-process web forming and water controlling, then baking is conducted, and the polyacrylonitrile fiber cloth is obtained; a plurality of pieces of polyacrylonitrile fiber cloth are stacked and subjected to heat treatment, and a polyacrylonitrile core material is obtained; wherein the organic fiber is made of a polyacrylonitrile material, and the organic fiber has a special-shaped cross section. Depending on the synergistic effect of the low intrinsic heat conductivity coefficient of the polyacrylonitrile fiber and the large physical interval of the special-shaped section, the organic fiber suspension liquid can achieve the low heat conductivity coefficient during film forming, and when the obtained polyacrylonitrile core material is used for preparing the vacuum heat preservation plate, the heat conductivity coefficient of the vacuum heat preservation plate can be reduced.

The invention discloses an extrusion-molded carbon mineralized fiber cement board and a preparation method thereof, and the preparation method comprises the following steps: dispersing fibers, a plasticizer, a lubricant and a dispersant in water to obtain a fiber suspension; adding powder containing the calcium silicate ore phase into the fiber suspension, and kneading into plastic pug; aging the plastic pug, performing vacuum pugging, and performing vacuum extrusion molding to obtain a fiber cement board blank; and drying and pre-curing the fiber cement board blank, and then carrying out CO2 curing to obtain the carbon mineralized fiber cement board, the raw material formula is simple, the powder with high carbonization activity and low hydration activity is adopted as a gelling component, so that the plasticity of the pug is stable, fibers are uniformly dispersed, and the production efficiency and the product performance of the fiber cement board prepared by an extrusion molding process are remarkably improved by combining normal-temperature and normal-pressure CO2 curing.

The invention relates to a bacterial cellulose high-swelling-rate edible hydrogel sheet and a preparation method thereof. The bacterial cellulose high-swelling-rate edible hydrogel sheet comprises bacterial cellulose, kappa-carrageenan, glucomannan and microgel composite components. The bacterial cellulose, the kappa-carrageenan and the glucomannan are compounded to construct a three-dimensional network with high strength and high porosity, so that the hydrogel sheet can be quickly swelled in gastric juice, provides satiety and is finally disintegrated into a fiber suspension which is easy to discharge. By introducing a microgel composite component constructed by beta-cyclodextrin including epsilon-polylysine, kappa-carrageenan and soya bean lecithin, multiple functions of bacteriostasis, oxidation resistance, loading of fat-soluble active components and the like are further realized, and the taste and stability of the product are remarkably improved.

The present invention discloses toilet paper and a preparation method thereof. The fiber suspension contains nanocellulose, wherein the absolute dry weight of the nanocellulose in the fiber suspension is 0.5-2%, the absolute dry weight of the long fibers is 0-15%, and the absolute dry weight of the short fibers is 99.5-83%. The toilet paper has a basis weight of 13.0-20.0 g / m2, a longitudinal-transverse strength ratio of 1.4-2.2, a longitudinal strength of 200-500 gf / inch, and a transverse strength of 100-250 gf / inch. By utilizing the speed difference between the jet-forming web and the sizing, some fibers are mainly arranged longitudinally, while other fibers are distributed between the longitudinal fiber chains to form a fiber web. They are also linked together by nanocellulose, which keeps the longitudinal strength of the paper unchanged, reduces the use of long fibers or dry strength agents or the pulping power, and reduces the cost of paper production; the transverse short fibers are combined with nanofibers and distributed between the short fiber chains, which improves the transverse strength, reduces the aspect ratio, and avoids the occurrence of tailing when torn; the combination of nanocellulose and long and short fibers improves the flexibility of the paper and the user experience.

1. Name of the designed product: sensor. 2. Use of the designed product: the designed product is a sensor for measuring the properties of a fiber suspension. 3. Design points of the designed product: design 1 and design 2 are in shape, and design 3 to design 6 are in shape and color. 4. Picture or photo best indicating the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design. 6. Other circumstances needing explanation: design 2A part is transparent. Design 3 to design 6 claimed contain color.

A disc filtration system and method for dewatering a fibrous suspension is disclosed. The disc filtration system includes a disc filter and a control system. The disc filter includes an inlet for introducing a fibrous suspension into a container, a rotor shaft and a variable speed drive operably coupled to the rotor shaft, and at least one filter element coupled to the rotor shaft, where the at least one filter element rotates with the rotor shaft. The control system measures torque on the variable speed drive and causes the variable speed drive to adjust a rotational speed of the rotor shaft from a first rotational speed to a second rotational speed based on the torque on the variable speed drive.

The invention relates to the technical field of paper pulp foaming buffer material preparation, in particular to a paper pulp foaming buffer material and a preparation method and application thereof. Carrying out mechanical treatment on the paper pulp fiber suspension to obtain a fibrillated paper pulp fiber suspension; mixing the fibrillated paper pulp fiber suspension with an electrolyte to obtain a paper pulp / electrolyte mixed solution; mixing the paper pulp / electrolyte mixed solution with a surfactant, and foaming to obtain paper pulp / electrolyte foaming slurry; and placing the paper pulp / electrolyte foaming slurry in a porous mold to remove a liquid phase, and drying to obtain the paper pulp foaming buffer material. The paper pulp foaming buffer material provided by the invention has excellent mechanical property, heat insulation property, machinability and biodegradability, and the packaging buffer application of the paper pulp foaming material to articles such as light fragile products and temperature-sensitive products is obviously expanded.

A method for forming a fibrous sheet on a papermaking machine comprising the steps of depositing a dilute fiber suspension from outside a headbox onto a forming area comprising a forming surface made of a structured fabric, wherein the structured fabric is supported by a breast roll and a forming roll, and the forming area is devoid of any additional fabrics or belts other than the structured fabric, draining the dilute fiber suspension through the structured fabric, and drying the fiber suspension.

The invention relates to a bacterial cellulose capsule. The bacterial cellulose capsule is prepared from the following raw materials: a fermented fiber beverage, a konjac glucomannan solution and a gallic acid grafted chitosan oligosaccharide solution, in the fermented fiber beverage, the concentration of bacterial cellulose is 0.5-1.5 g / mL; the bacterial cellulose is obtained by fermenting and purifying gluconacetobacter xylinum and foal bacillus; in the konjac glucomannan solution, the concentration of konjac glucomannan is 5 to 15 mg / mL; in the gallic acid grafted chitosan oligosaccharide solution, the concentration of gallic acid grafted chitosan oligosaccharide is 5 to 15 mg / mL. The swelling ratio of the capsule is gt; the structural integrity can be maintained after water absorption and expansion, and the fiber suspension can be gradually dispersed into the fiber suspension at proper time and can be conveniently discharged out of the body.

A method in which a flow stream (5) of dry cementitious powder from a dry powder metering device (2) passes through a dry cementitious powder inlet conduit (5a) to feed a first feed section (20) of a fiber-suspension mixer (32). A flow stream of aqueous medium (7) passes through at least one aqueous medium flow stream conduit (7a) to feed a first mixing section (22) of the fiber-suspension mixer (32). A flow stream (34) of reinforcing fibers passes through a fiber feeder (33) through a reinforcing fiber flow stream (34a) to feed a second (24) of the fiber-suspension mixer (32). The flow stream (5) of dry cementitious material, the flow stream of aqueous medium (7) and the flow stream (34) of reinforcing fibers are fed into the fiber-suspension mixer (32) to create a fiber-cement mixture flow stream (36) which exits through an outlet conduit (36a) at the downstream end of the mixer (32).

The invention provides a waste paper microfibrillated fiber pretreatment device, and relates to the field of papermaking equipment. Two smashing rollers are symmetrically and rotationally connected to the upper side in the device body, a spiral conveying roller is rotationally connected to the middle in the device body, a driving rod is rotationally connected to the lower end face of the bottom of the device body, and the front end of the driving rod and the front end of the spiral conveying roller are in transmission connection through a synchronous belt. Two suspension mixing rods are symmetrically and rotatably connected to the upper end face of the bottom of the device body, a fine crushing cylinder is fixedly connected to the middle of the bottoms of the left and right side walls of the device body, and a crushing motor is fixedly connected to the bottom of the fine crushing cylinder. In the fiber treatment link, the microfibrillating degree of fibers is greatly improved through cooperation of the guide plates and the crushing blades in the fine crushing cylinder, the quality of fiber suspension liquid is effectively improved, high-quality raw materials are provided for subsequent paper forming, the performance of final paper is improved, and the problems that the fibers are poor and finished products are affected due to poor pretreatment are solved.

The utility model relates to the technical field of hollow fiber production equipment, in particular to a membrane filament hanging device, which comprises a filament hanging disc, a plurality of membrane filaments and a plurality of membrane filaments, the hoisting structure is arranged at the top of the wire hanging disc, and the hoisting structure is used for being connected with a hoisting hook of a hoisting device; a plurality of filament hanging hooks are arranged, the plurality of filament hanging hooks are arranged at the bottom of the filament hanging disc, the plurality of filament hanging hooks are uniformly distributed along the circumferential direction of the filament hanging disc, and the filament hanging hooks are used for hanging membrane filament bundles; and the supporting and limiting structure is installed on the filament hanging disc, and the supporting and limiting structure can bear and place the filament hanging disc on a membrane filament cleaning barrel. According to the utility model, a large batch of membrane filaments can be suspended to improve the production efficiency, and each membrane filament bundle is separately suspended to avoid tight arrangement of membrane filament suspension areas, so that the subsequent cleaning effect of the membrane filaments is improved, and the requirement of mass production of the membrane filaments is met.

A mould (14) for forming an article from a fibre suspension. The mould includes an insert with a cavity (27) in the negative shape of an article to be formed and two regions of different porosity / permeability (28, 29) about the cavity (27). In use the mould communicates a suspending fluid of the fibre suspension, e.g. by vacuum pump, through the at least two regions of different porosity / permeability about the cavity. A formed shape (22) of fibres is left behind on the cavity.

A method for controlling paper making includes monitoring (302) a surface level of a fibrous suspension in a storage, and identifying (303) that the surface level has decreased so that at least one emptying criterion is met and thereafter identifying that the surface level has increased so that at least one refilling criterion is met, and responsively to the identifying that the surface level has increased so that the at least one refilling criterion is met, starting to dose a biocide agent into the fibrous suspension entering the storage. A corresponding apparatus and computer program are disclosed.

The invention discloses a preparation method of a PET core material, a vacuum insulation board, a preparation method of the vacuum insulation board and heat insulation equipment, and belongs to the technical field of vacuum insulation materials. Comprising the following steps: dispersing organic fibers in a liquid to obtain an organic fiber suspension; the organic fiber suspension liquid is subjected to wet-process web forming and water controlling, then baking is conducted, and PET fiber cloth is obtained; the multiple pieces of PET fiber cloth are stacked and subjected to heat treatment, and a PET core material is obtained; wherein the organic fiber is made of a PET (Polyethylene Terephthalate) material, and the organic fiber has a special-shaped cross section. Depending on the synergistic effect of the low intrinsic heat conductivity coefficient of the PET fibers and the large physical interval of the special-shaped section, the organic fiber suspension liquid can reach the low heat conductivity coefficient during film forming, and when the obtained PET core material is used for preparing the vacuum heat preservation plate, the heat conductivity coefficient of the vacuum heat preservation plate can be reduced.

The invention discloses a bamboo cellulose micro-nano fiber composite aerogel material and a preparation method and application thereof, and relates to the field of aerogel, the preparation method comprises the following steps: S1, crushing bamboo pulp to obtain bamboo pulp microfibers; s2, adding the bamboo pulp microfiber and bamboo cellulose nanofiber suspension into water, and stirring; s3, sequentially adding silicon dioxide, polysiloxane and boric acid into the dispersion liquid to obtain a premix; s4, adding a polyvinyl alcohol aqueous solution and a glutaraldehyde aqueous solution at room temperature to obtain a reactant; s5, pouring reactants into a mold, and freezing and forming to obtain ice gel; and S6, replacing the ice gel with ethanol, and drying at normal pressure to obtain the composite aerogel material. According to the method, cellulose does not need to be dissolved, cellulose microfibers serve as a firm framework, interpenetrating double networks are constructed through physical entanglement, physical / covalent cross-linking and ice crystal template constraint, multi-scale material interface assembly is achieved, and the composite material can be easily prepared under normal-pressure drying and is expected to serve as a sustainable substitute of plastic foam.