56 results about "Fiber suspension" patented 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.

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.

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.

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 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.

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.

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.

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.

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.

The application discloses a kind of preparation and application of 3D porous nanocellulose aerogel electret material for radioactive aerosol purification, comprising: preparation of dialdehyde cellulose nanofiber and preparation of ethyl cellulose nanofiber;Dialdehyde cellulose nanofiber is dispersed with ethyl cellulose nanofiber in tertiary butanol aqueous solution to form fiber suspension, and it is transferred to template, freeze-drying, and 3D porous nanocellulose aerogel is obtained;3D porous nanocellulose aerogel is heat treated in aniline steam, and modified 3D porous nanocellulose aerogel is obtained, then it is corona polarized, and 3D porous nanocellulose aerogel electret material is obtained.The 3D porous nanocellulose aerogel electret material of the application has certain electricity storage performance, the surface potential of electret nanofiber aerogel is tested, and the surface potential value is still higher than 0.27kV after 420min, and its dust capacity is good, purification performance is high, with good application prospect.

The invention relates to a method and an installation for producing kraft paper, said installation comprising the following installation parts: - a wire section (2) for forming a fibrous web by continuously applying a fibrous suspension along the machine running direction (1) by means of a headbox (3); - a shaking device (4) for shaking the fibrous web transversely to the machine running direction (1), i.e. in the transverse direction; - a pressing section (5) for pressing the fibrous web partially dewatered in the wire section (2); - a drying section (6) for drying the fibrous web; - a compacting device (21), in particular a Clupak device, for compacting the fibrous web in the machine running direction (1), - and a winding station (7) for winding up the paper web formed from the fibrous web, wherein a bypass assembly (46) is provided for conveying the fibrous web along a bypass path (47) so as to bypass the compacting device (21).

The invention discloses a bamboo fiber paper-based material as well as a preparation method and application thereof, and belongs to the field of biomass chemical engineering technologies and environmental remediation. The preparation method comprises the following steps: grinding a bamboo pulp fiber suspension to obtain mechanically modified bamboo fibers, and adding water into absolutely dry bamboo pulp fibers to prepare a mechanically modified bamboo fiber suspension; the preparation method comprises the following steps: respectively dispersing and dissolving polyethyleneimine and glutaraldehyde in water to obtain a polyethyleneimine solution and a glutaraldehyde solution; mixing the bamboo fibers with a polyethyleneimine solution for reaction, adding a glutaraldehyde solution, continuously stirring, and washing to obtain chemically modified bamboo fibers; and defibering the chemically modified bamboo fibers, adding polyamide epichlorohydrin resin and cationic polyacrylamide, and carrying out papermaking and drying treatment to prepare the bamboo fiber paper-based material. The bamboo fiber paper-based material prepared by the method has super-efficient capturing capability on micro-nano plastics, the removal efficiency reaches 99%, the adsorption capacity reaches 250mg / g, the bamboo fiber paper-based material can be popularized and used on a large scale, and the removal cost is greatly reduced.

This invention relates to a method for manufacturing linerboard webs from a fiber suspension, wherein the fiber suspension is at least partially made from waste paper as the fiber raw material. The method includes the following steps: a. feeding waste paper to a preparation facility (3) to generate a waste paper stream (2); b. separating the waste paper stream (2) into a short fiber stream and a long fiber stream in a grading process; c. feeding the short fiber stream to a short fiber stack and further to a mixing tank; d. feeding the long fiber stream to a long fiber stack; e. thickening the long fiber stream to a first material consistency after the long fiber stack; f. pulping the long fiber stream having the first material consistency by high-concentration pulping; g. feeding the long fiber stream to a mixing tank; h. guiding the fiber suspension from the mixing tank to a paper machine via a headstock system to form linerboard webs in the web travel direction; i. subjecting the linerboard webs to shrink-promoting drying in a drying section, preferably with an irregular shape that is transverse to the web travel direction; j. winding up the linerboard webs.

The disclosure relates to a method for forming nanofiber-assembled filaments in which an aromatic polyamide nanofiber suspension is first formed into wet nanofiber-assembled filaments via wet-spinning and protonation in a coagulation medium including at least one proton donor along with a non-solvent for the aromatic polyamide. The wet nanofiber-assembled filaments are then drawn to reduce / remove voids in the nanofiber-assembled filaments and improve the mechanical properties of the assembled filaments. The method can be used as a recycling method for used aromatic polyamide fiber / filament materials in which the recycled filaments have high / good mechanical properties relative to virgin filament materials.

The invention relates to a method for producing paper or paperboard, comprising the addition of a mixture M and a water-soluble amphoteric polymer PA to a fiber suspension.

The application discloses a silicon carbide fiber composite felt and a preparation method thereof. Short-cut silicon carbide fibers are subjected to plasma surface treatment, then one of short-cut glass fibers, short-cut carbon fibers and the short-cut silicon carbide fibers are added into a nano-dispersion liquid to obtain a fiber suspension, and the fiber suspension is subjected to dewatering forming, drying and solidification to obtain the silicon carbide fiber composite felt. The application introduces hydrophilic groups such as carboxyl, hydroxyl and carbonyl on the surface of the short-cut fibers through low-temperature plasma, improves the wettability of the surface of the silicon carbide fibers, disperses different fibers through specific nano-dispersants, and finally obtains the silicon carbide fiber composite felt which can adjust and control the electromagnetic wave absorption rate of different electromagnetic wave bands and has excellent toughness and softness.

The invention relates to the technical field of suspension gas content determination, in particular to a method and a device for determining the gas content in paper pulp fiber suspension.The device comprises a rotatable container, the top end of the container is spirally connected with a hole cover capable of being opened, and the top end of the container is communicated with a negative pressure cylinder through a negative pressure pipe; an annular outer hole plate is fixedly connected to the inner wall of the container through a connecting rod, a gap exists between the outer side of the annular outer hole plate and the inner wall of the container, the bottom of the annular outer hole plate is solid, the upper portion of the annular outer hole plate is exposed, and an inner cavity is formed in the inner side of the annular outer hole plate. According to the invention, the container is rotated, so that liquid in the container is attached to the inner wall of the container, compared with the mode that the liquid is accumulated at the bottom end, the gas-liquid contact area is increased, and the gas-liquid separation efficiency is improved. And meanwhile, the annular outer pore plate is positioned in liquid attached to the side wall of the container.

The invention provides a special-shaped part machining device and method based on three-dimensional forming, and belongs to the field of fiber composite material special-shaped part manufacturing. The device comprises a pulp forming pool, a white water pool, a slushing pump, a central pulp distributor, a 3D former, a steam-water separator and a vacuum pump, a water outlet of the white water tank, the slushing pump, the central pulp distributor, the 3D former, the steam-water separator and a water inlet of the white water tank are sequentially connected in series through pipelines to form a forming loop; the pulping pool is connected with the slushing pump through a suspension liquid conveying pipeline; the vacuum pump is connected with the steam-water separator through a pipeline; the 3D forming device comprises a forming dewatering pipe and a suspension liquid distribution shell arranged on the forming dewatering pipe, a special-shaped part forming area is arranged on the outer wall of the upper portion of the forming dewatering pipe, a dewatering area is arranged in the forming dewatering pipe and connected with a steam-water separator pipeline, a forming flow channel is formed in the suspension liquid distribution shell, and fiber suspension liquid can be introduced into the forming flow channel. Uniform slurry distribution, uniformity improvement and one-time three-dimensional forming of the special-shaped part can be achieved.

The invention discloses a preparation method of a polyamide 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 polyamide fiber cloth is obtained; the multiple pieces of polyamide fiber cloth are stacked and subjected to heat treatment, and a polyamide core material is obtained; wherein the organic fiber is made of a polyamide 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 polyamide 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 polyamide core material is used for preparing the vacuum heat preservation plate, the heat conductivity coefficient of the vacuum heat preservation plate can be reduced.

A system and process are disclosed for forming nonwoven webs from a foam and fiber suspension. After the web is formed, excess foam is collected and reused. The reclaimed foam is combined with further amounts of fiber at a high consistency. The high consistency fiber and foam mixture is defiberized without causing excessive foaming. The defiberized foam and fiber mixture is then diluted and fed back to a headbox for forming the nonwoven web.

The invention discloses a tableware forming system capable of solving sugarcane pulp tableware corner material shortage and achieving uniform thickness. The tableware forming system comprises a pulp pool; negative pressure pre-coating treatment: a pre-coating mold matched with the shape of the formed target product is included, relative negative pressure is formed in the pre-coating mold, at least the local position in the pre-coating mold is kept in a negative pressure state, and the formed surface of the pre-coating mold is wrapped with plant fiber suspension slurry; moreover, fine and dense suction holes are formed in the forming surface, the pre-coating mold is matched with an internal negative pressure state to carry out solid-liquid separation on plant fiber suspension slurry in the wrapping forming process, so that the water content of plant fibers is reduced, the plant fibers are wrapped on the forming surface, and a pre-coating blank with a certain thickness is formed; according to the technical scheme, in order to solve the problems of corner material shortage and uneven thickness which are difficult to solve by a traditional process in cane syrup tableware forming, through the multi-level structure design of negative pressure pre-coating, precise hot pressing and flexible adaptation and process cooperation, remarkable technical advantages and practical value are shown.

The invention discloses an image instance segmentation method for overlapping and separating fiber agglomerates in a papermaking process, and the method comprises the following steps: constructing a papermaking fiber suspension microscopic image data set, and carrying out the data preprocessing; constructing an image instance segmentation network model, and dynamically generating a thermodynamic diagram prior graph of a fiber category by using a Transform decoder output feature; carrying out down-sampling on a prior graph of the thermodynamic diagram and then fusing with original mask attention, and constructing an attention enhancement mechanism guided by thermodynamic diagram saliency; and constructing a thermodynamic diagram saliency loss function containing coverage degree and separation degree constraints, performing joint optimization with the native loss, and finally outputting a fiber mass image instance segmentation result. The method can effectively improve the separation precision of overlapped fiber agglomerates and the segmentation performance of small-scale instances, and is suitable for intelligent analysis of high-flux and high-precision fiber morphology in the papermaking industry.