261 results about "Fiber suspension" patented technology

The invention relates to the technical field of wastewater treatment, in particular to a hydrolytic acidification wastewater treatment process for strengthening extracellular electron transfer, which comprises the following steps: S1, constructing a hydrolytic acidification reactor, taking carbon fiber suspension filler as an anode, taking a steel wire mesh frame as a cathode, connecting the carbon fiber suspension filler in series by a stainless steel wire rope, and taking the stainless steel wire rope as a cathode; the carbon fiber suspension filler is connected with the steel wire mesh frame through an electrochemical workstation; s2, inoculating hydrolytic acidification bacteria into a reactor, controlling culture conditions, and domesticating microorganisms in a micro-current environment until a biological membrane is formed on the carbon fiber suspension filler; s3, inputting wastewater to be treated into the reactor, controlling treatment conditions, monitoring an effluent result, and discharging after the effluent result reaches the standard. Compared with traditional interspecific electron transfer, the wastewater treatment method has higher efficiency and speed, the oxygenolysis process of organic matter is accelerated, and the overall efficiency of wastewater treatment is improved.

A method of forming a molded container is disclosed, the method comprising applying a fibrous suspension to a mold cavity wall of a container mold, the fibrous suspension at least partially coating the mold cavity wall. The method further includes supplying a fluid at a pressure between about 3.5 bar and about 10 bar in direct contact with the fiber suspension on the mold cavity wall for a period of less than about 60 seconds such that the fluid presses the fiber suspension against the mold cavity wall, liquid is thus removed from the fiber suspension and passed through holes formed in the mold cavity wall to form the molded container on the mold cavity wall.

The invention discloses a preparation method of a bio-based cellulose nano colorant, which comprises the following steps: (1) cutting absorbent cotton into pieces, and grinding to obtain cellulose powder; (2) mixing the cellulose powder with sulfuric acid, stirring and hydrolyzing under a water bath condition, then adding deionized water into a reaction solution, centrifuging, dispersing and dialyzing to prepare a pure fiber suspension; (3) performing high-pressure homogenization on the pure fiber suspension to obtain nano cellulose; and (4) preparing nanocellulose into a nanocellulose suspension, then adding the indigo dye dispersion liquid and a surfactant, carrying out ultrasonic treatment, and cooling to room temperature to prepare the bio-based cellulose nano colorant. The insoluble dye indigo blue is dispersed and then added into the nanocellulose to prepare the insoluble dye type nanocellulose coloring agent, so that the coloring agent has high color depth and good stability.

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.

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.

The present invention discloses a biomass aerogel-based seawater evaporator with controllable pore size and a preparation method thereof. In the present invention, a wood fiber suspension is mixed with carboxymethyl nanocellulose, and the mixture is sequentially subjected to directional freezing, freeze drying, acetylation, and cleaning, and then a titanium carbide photothermal layer is sprayed on the top to obtain a biomass aerogel-based seawater evaporator. The biomass aerogel-based seawater evaporator prepared by the present invention has low density, high porosity, and high light absorption rate. Compared with other biomass-based seawater evaporators, the evaporator obtained by the present invention can adjust the pore size of the aerogel by controlling the carboxymethyl nanocellulose content, thereby balancing the evaporation enthalpy and water transfer rate of the evaporator to obtain excellent seawater evaporation efficiency, showing great application prospects in the field of seawater desalination.

There is disclosed a method of forming a moulded receptacle, comprising: applying a fibre suspension onto a mould cavity wall of a receptacle mould, the fibre suspension at least partially coating the mould cavity wall. The method further comprises supplying a fluid into direct contact with the fibre suspension on the mould cavity wall at a pressure of between about 3.5 bar and about 10 bar for a period of less than about 60 seconds, such that the fluid presses the fibre suspension against the mould cavity wall so that liquid is removed from the fibre suspension and passes through apertures formed in the mould cavity wall to form the moulded receptacle on the mould cavity wall.

The disclosure provides compounds, compositions, and methods for improving a papermaking process. A method may include adding a strength aid to a cellulosic fiber suspension in the papermaking process and adding a dewatering agent to the cellulosic fiber suspension. The dewatering agent may comprise a polymer having a reduced specific viscosity from about 2.5 to about 5.5 dL / g. The polymer may include, for example, a solution polymer, a latex polymer, or both. The strength aid may be selected from, for example, a cationic GPAM polymer, an anionic GPAM polymer, an amphoteric polymer with an overall negative charge, an amphoteric polymer with an overall positive charge, a cationic polyacrylamide polymer, an anionic polyacrylamide polymer, an associative polymer, a treatment polymer embedded in a colloidal hydroxide complex, starch, or any combination of the foregoing.

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.

Hollow moulded fibre product manufacturing system comprising: (i) a plurality of first mould cavities 116 configured to receive a fibre suspension for forming respective partially formed hollow moulded fibre products, (ii) a plurality of second mould cavities 118 configured to receive the respective partially formed hollow moulded fibre products from the plurality of first mould cavities 116 for further processing the respective partially formed hollow moulded fibre products in the plurality of second mould cavities 118 to provide hollow moulded fibre products. The system further comprises: (iii) a transfer device 106 configured to transfer the partially formed hollow moulded fibre products from the plurality of first mould cavities 116 to the plurality of second mould cavities 118. A total number of the second mould cavities may be greater than or equal to a total number of the first mould cavities 116. The total number of second mould cavities 118 may be greater than the total number of first mould cavities 116 and the transfer device may be configures to transfer two or more partially formed hollow moulded fibre products from the plurality of first mould cavities 116 to a subset of the second mould cavities 118.

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.

The invention relates to a method for manufacturing a fibrous web, such as web of paper, board, tissue or the like. The method comprises obtaining at least one fibre suspension of lignocellulosic and / or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity, such as pulper, storage tower or broke tower. Fibre suspension, which comprises bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitised by adding a germinant surfactant, which comprises a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point, which is located at the lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.

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 receptacle moulding system for moulding a receptacle from a fibre suspension and a method for manufacturing a moulded receptacle, in which fibre suspension is deposited into a cavity of a mould during two deposition periods that are separated by an intervening pressure build-up period. During the pressure build-up period a negative pressure of increasing magnitude is generated within the cavity of the mould.

The invention discloses a preparation method for realizing controllable specification of cellulose nanocrystals by virtue of maleic acid hydrolysis synergistically assisted by ferric chloride catalysis and microjet machinery. The method comprises the following steps: (1) preparing a maleic acid solution, proportioning a ferric chloride solution, mixing and heating, and then adding a cellulose raw material for hydrolysis; (2) carrying out vacuum filtration and washing a fiber suspension obtained by acidolysis; (3) diluting the fiber filter residue, and pressurizing and homogenizing through a nano micro-jet homogenizer; and (4) carrying out centrifugal operation, collecting supernate to obtain CNC turbid liquid, and drying to obtain CNC. Agents used in the invention are green and environment-friendly and can be recycled, the reaction conditions are relatively mild, the process is easy to control, the operation process is simple, and the prepared product has excellent performances such as controllable specification, good dispersion stability and good thermal stability. The CNC prepared by the method has wide application prospects in biomedicine, food packaging, beauty makeup skin care products and the like.

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 relates to a rotor (2) for a flat screen machine (1) for wet screen a fibrous suspension, comprising a rotor hub (4), one or more rotor blades (5) extending radially outwards from the rotor hub (4), each rotor blade (5) having a working edge (6) which has a leading front surface (7) and a bottom surface (8) in the direction of rotation (R) of the rotor (2), wherein the leading front surface (7) and the bottom surface (8), which together form the working edge (6), are arranged at a leading edge angle (Y) to each other; a rotor profile underside surface (9) which lags behind the working edge (6) in the direction of rotation of the rotor (2), adjoins the bottom surface (8) of the working edge (6) and extends from the bottom surface (8) of the working edge (6) towards a rotor profile trailing edge (10) of the rotor blade (5), which is arranged at a trailing distance (NA) from the working edge (6),has an increasing profile, such that the rotor profile underside surface (9) has an increasing distance (h) from the plane (E) in which the bottom surface (8) of the working edge (6) lies, starting from the base surface (8) of the working edge (6) in the direction of the rotor profile trailing edge (10) of the rotor blade (5), and has a rotor profile nose (11) formed at least on one inner section of the rotor blade (5) near the rotor hub (4), pointing forward in the direction of rotation (R) of the rotor (2), which is set in front of the working edge (6) by a lead distance (VA) in the direction of rotation (R) of the rotor (2) and which has a convex nose curvature section (NR).

The present invention relates to a method for preparing a composite carbon fiber tape containing inorganic non-woven gauze. The method comprises: cutting inorganic fibers into short fibers, then placing them in water, conveying the obtained fiber suspension slurry to a web-forming mechanism to form the inorganic fibers into a wet non-woven gauze, drying, adding a binder, curing, and obtaining a dry non-woven gauze; adding a binder to the upper and lower surfaces of unidirectional carbon fibers, attaching the dry non-woven gauze to the upper and lower surfaces of the unidirectional carbon fibers, and hot pressing. The method has a relatively simple process, is easy to operate, has good repeatability, and is low in cost; the composite material products subsequently produced from the composite carbon fiber tape have fewer internal defects and good resistance to interlayer damage.

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 device (1) for treating a fiber suspension, comprising a flow diverter (10) configured to divide a common total fiber suspension flow guided in a treatment chamber (3) into a first partial fiber suspension flow guided through a first treatment gap (8.1) and a second partial fiber suspension flow guided through a second treatment gap (8.2). The invention also relates to a corresponding method for treating a fiber suspension.