104 results about "Cellulose pulp" patented technology

The invention discloses a cellulose coated diaphragm and a preparation method thereof in the field of lithium ion batteries, the diaphragm comprises alpha-cellulose pulp, a cellulose grafted phenylboronic acid-co-oligomeric ethylene oxide copolymer, a thermal response star zwitterionic polymer and nano aluminum oxide, and an N-methylmorpholine-N-oxide aqueous solution is adopted as a solvent system. The preparation method comprises the following steps: firstly synthesizing a cellulose grafted copolymer with dynamic borate bonds through atom transfer radical polymerization, then preparing a star polymer with thermal response arms and zwitter-ion terminals by taking cyclodextrin as a core, and finally mixing all the components to prepare coating slurry. And the composite diaphragm is prepared through the processes of coating, phase conversion, ultraviolet curing and drying. The diaphragm combines the thermal stability and lyophilic property of cellulose, forms a dynamic self-adaptive interface layer through the synergistic effect of two functional compounds, has the advantages of active safety protection, dendritic crystal inhibition, long cycle life and the like, and remarkably improves the comprehensive performance of the lithium ion battery.

A method of manufacturing an article at least partially made of cellulose fibers comprises inserting a cellulose pulp comprising cellulose fibers and water into a mixing cavity; applying a high shear mixing action to the cellulose pulp using a high-shear mixer, such that a foam blend comprising cellulose fibers, water and air bubbles is created; inserting the foam blend into a mold cavity; and molding the article by heating the foam blend contained within the mold cavity.

This invention discloses a heterolayer-coupled cellulose-based composite membrane with impact resistance and fatigue resistance, and its preparation method. The membrane comprises: a rigid support layer composed of cellulose pulp, providing overall structural support and dimensional stability; and a flexible crosslinked layer located on the surface of the rigid support layer, composed of gelatin treated with a DES solvent system and crosslinked with glutaraldehyde, used to absorb impact energy and disperse stress. The rigid support layer and the flexible crosslinked layer form a heterolayer-coupled structure. By adjusting the modulus difference between the two layers, the bending stability and durability of the composite membrane under repeated loading and dynamic impact conditions are improved. The bilayer cellulose-based composite membrane of this invention exhibits excellent impact resistance, good fatigue resistance, and structural stability under dynamic impact and repeated bending conditions.

The application discloses a kind of green hydrophobic light-weight bio-based composite material of wood structure imitation and preparation method thereof, comprising the following steps: plant fiber is treated by low-alkali cooking pretreatment, standby;Starch is mixed with water, then 75-95 ℃ is added with ultrasonic vibration stirring 1-2h, then adding mesophilic alpha amylase is carried out enzymolysis, after enzymolysis is completed, oxidation treatment is carried out, then urea is added to starch, stirring reaction 1-2h, finally foaming agent is added, uniformly stirred, and the foaming hot melt modified starch is prepared;Wood pulp fiber, lignin, pretreated plant fiber and foaming hot melt modified starch are mixed according to proportion, and mixed slurry is obtained;The mixed slurry is injected in injection molding machine, and the intermediate bubble layer is prepared;A layer of waterproof film containing lignin nanocellulose slurry and polylactic acid mixed solution is sprayed on the surface of the intermediate bubble layer, and the dense waterproof layer is prepared, that is, obtained.

The present invention belongs to the technical field of lyocell fibers, and specifically relates to high-enthalpy phase-change temperature-regulating lyocell fibers and a preparation method thereof. The preparation method of the high-enthalpy phase-change temperature-regulating lyocell fibers comprises the following steps: using a mixture of n-octadecane, n-nonadecane, and n-heneicosane as a capsule core material, polyurethane as an inner capsule wall, and a product of gelatin and gum arabic as an outer capsule wall to prepare phase-change temperature-regulating microcapsules; adding cellulose pulp to a cellulose solvent to prepare a cellulose spinning solution; adding phase-change temperature-regulating microcapsules to an aqueous solution of a low-concentration cellulose solvent to prepare a phase-change temperature-regulating microcapsule dispersion system; and mixing the cellulose spinning solution and the phase-change temperature-regulating microcapsule dispersion system to prepare high-enthalpy phase-change temperature-regulating lyocell fibers. The high-enthalpy phase-change temperature-regulating lyocell fibers prepared by the present invention have good dispersibility and compatibility of the phase-change temperature-regulating microcapsules contained therein in the fibers, and have good phase-change temperature-regulating function and toughness.

The application relates to the papermaking technical field, and discloses a reusable ultrahigh-purity paper and a preparation method thereof.A preparation method of a reusable ultrahigh-purity paper comprises the following steps: taking high-purity cellulose pulp plates, dispersing the high-purity cellulose pulp plates in deionized water, and then performing a deconstruction treatment to prepare paper pulp; performing ultrasonic treatment on the paper pulp in an acid medium, and then performing ultrasonic treatment on the paper pulp in ethanol to prepare purified paper pulp; washing the purified paper pulp with deionized water; obtaining original paper through self-assembly forming and drying treatment of the washed paper pulp; coating resin on the surface of the original paper; performing hot-pressing treatment and corona treatment on the original paper coated with the resin, and then performing high-temperature treatment and packaging to obtain the reusable ultrahigh-purity paper.The preparation method is simple in operation, high in production efficiency, and meets the environmental protection requirements; the prepared ultrahigh-purity paper is high in purity, low in impurity content, and can meet the demand of sampling paper.

The present application provides a cellulose / acetyl cellulose composite fiber and a preparation method thereof, the preparation method comprising the following steps: mixing and crushing cellulose pulp and acetyl cellulose sheets, adding a low-concentration NMMO solution and a surfactant for stirring and impregnation, and obtaining a suspension after the material is fully mixed and impregnated; obtaining a blending spinning solution after the suspension is subjected to two-stage reduced-pressure evaporation and dehydration; and spinning the blending spinning solution by dry-jet wet spinning to obtain the composite fiber. The composite fiber prepared by the present application has the performance advantages of lyocell fiber and acetyl cellulose, excellent mechanical properties, and improved fibrillation performance. The fabric has the advantages of air permeability, skin friendliness, moisture absorption, easy drying, comfort, natural degradation, green environmental protection, and good application prospect in high-end textiles and garments.

Wipers are disclosed formed from two, three, or more fibrous sheets. The fibrous sheets or plies are attached together by embossing a pattern into opposite sides of the product such that at least some of the embossments on one side align with at least some of the embossments on the opposite side. The resulting wiper includes outer layers primarily made from polymer synthetic fibers and a middle layer comprised primarily of cellulose fibers, such as cellulose pulp fibers. The wipers can be formed without any thermal bonding or ultrasonic bonding and can be formed without containing any polyester fibers. The wipers have demonstrated excellent oil absorbency.

The present application belongs to the field of separation of agroforestry biomass components, and provides a method for subcritical hydrolysis and alkaline DES treatment of castor straw fiber to hydrolyze associated oligomeric xylose and micro-nano lignin. The subcritical hydrolysis method is used to treat castor straw raw materials to obtain a large amount of oligomeric xylose, a small amount of micro-nano low molecular weight lignin and a hydrolysis residue rich in cellulose and lignin; then the hydrolysis residue is treated with alkaline deep eutectic solvent (DES) to obtain a slurry rich in cellulose and micro-nano high aryl ether bond lignin. Finally, the slurry rich in cellulose is enzymatically hydrolyzed by biotechnology to obtain high-yield glucose products. The present application integrates subcritical hydrolysis reaction and alkaline DES treatment technology, and can obtain various high-value-added products of castor straw biomass under mild reaction conditions, thereby providing technical support for the value-added of castor industry and the utilization of castor straw resources.

The invention aims to provide a preparation method and application of a nano-zinc oxide cellulose-based composite hydrogel film with antibacterial activity, and belongs to the field of food preservation. Comprising the following steps: preparing a sodium hydroxide-urea-water composite solvent system, pre-cooling to-12 DEG C, adding cellulose, stirring for 20 minutes to obtain cellulose slurry, adding 1.1 wt% of MBA cross-linking agent into the slurry, stirring at room temperature for 1.8 hours, respectively adding nano-zinc oxide powder into the slurry, stirring at room temperature for 1 hour until the materials are uniformly mixed, centrifuging at 1500 rpm for 10 minutes to remove suspended bubbles, and drying to obtain the nano-zinc oxide cellulose. And injecting the centrifugate into a flat glass plate mold, standing to complete gelation and film formation, after demolding, soaking in a weak acid solution and deionized water to be neutral, immersing the obtained gel into 10% w / v glycerol for solvent replacement, after 6 hours, cleaning the glycerol on the surface by using distilled water, and drying at 45 DEG C for 8 hours to prepare the nano-zinc oxide composite cellulose film. The strawberry fresh-keeping film is used for strawberry fresh-keeping, can effectively delay strawberry weightlessness, rotting and flavor substance loss, and has a fresh-keeping effect obviously better than that of a traditional PE film and non-packaging treatment.

The invention discloses a synergistic preparation method and application of carboxylated cellulose nanocrystals and regenerated cellulose, and belongs to the technical field of cellulose nanomaterial preparation. The synergistic preparation method of the carboxylated cellulose nanocrystal and the regenerated cellulose comprises the following steps: carrying out dipping treatment on a cellulose raw material in a Lewis acid solution, then carrying out solid-liquid separation, and collecting a solid-phase component to obtain cellulose slurry; dispersing the cellulose slurry in a polycarboxylic acid solution, reacting, and then filtering and collecting a solid product; treating the solid product by a method I or a method II; the method I comprises the following steps: carrying out separation treatment on the solid product to obtain carboxylated cellulose nanocrystals and regenerated cellulose; and the method II comprises the following steps: washing the solid product, and then carrying out suction filtration to obtain the holocellulose composite membrane.

The invention relates to the field of cellulose paper pulp materials, in particular to an environment-friendly corrugated carton material and a preparation method thereof. The environment-friendly corrugated carton material structurally comprises a surface layer located on the surface, a core layer located in the middle and a bottom layer serving as a lower base. The surface layer is prepared from surface layer plant cellulose pulp, a polymerization composition, a function enhancer, an adhesive, a wet strength agent, a waterproof agent, water and the like. The environment-friendly corrugated carton material provided by the invention not only can keep excellent mechanical properties, but also can balance the performance contradiction of the existing materials, so that the comprehensive performance of the materials is ensured, and the application quality and the application field of the environment-friendly corrugated carton material are improved.

A process for preparing paper pulp, comprising the following steps: - mixing (E10) a mass percentage of a fibrous by-product (10) with a complementary mass percentage of cellulose pulp (20), wherein the fibrous by-product (10) comprises at least one of the following: coffee husks obtained from roasting coffee beans, the coffee husks having a mass percentage of water-soluble compounds greater than 15% and a mass water content less than 20%, and textile dust having a length of less than 5 mm; and - refining (E20) the mixture to obtain the paper pulp. Figure for the abstract: Fig. 1

The invention relates to the technical field of functional paper-based materials, in particular to a paper-based antistatic diaphragm and a preparation method thereof. The method comprises the following steps: 1) carrying out enzymolysis modification on coniferous wood pulp to prepare cellulose pulp; (2) carrying out in-situ polymerization-wet-process papermaking forming on the cellulose paper pulp to obtain a paper base material; and 3) coating the single surface of the paper base material with the carbon-based slurry, and calendering to obtain the paper-based antistatic diaphragm. The diaphragm has good anti-static performance and mechanical performance, can be effectively used for packaging products with anti-static requirements such as drugs, electronic components and precision components, and has potential possibility of being used as a special electrochemical system diaphragm due to higher ionic conductivity generated by synergy on the basis.

This invention discloses a method for preparing cool-feeling cellulose fibers for nonwoven fabrics, comprising the following steps: (1) weighing a whitening agent and adding it to soft water, then adding a dispersant and grinding and dispersing it thoroughly, and filtering it to obtain a whitening dispersion; (2) preparing a cellulose spinning solution using cellulose pulp as raw material, adding the whitening dispersion to the spinning solution to obtain a blended spinning solution; (3) spinning the blended spinning solution in a low-temperature, low-concentration coagulation bath, and obtaining a shaped filament bundle after stretching, and then cutting it into short fibers; (4) subjecting the short fibers to high-temperature cotton web laying, acid washing, water washing, desulfurization, bleaching, swelling mercerizing, cool-feel finishing, oiling, and drying steps to obtain the cool-feeling cellulose fibers for nonwoven fabrics. The cool-feeling cellulose fibers prepared by the method of this invention have high whiteness, low residual sulfur content, low water-soluble matter, and long-lasting cool-feeling performance, which can fully meet the special requirements of nonwoven nonwoven fabric fields such as medical and health care.

The application discloses a chrysochlamys zollingeri extract functionalized viscose fiber and a preparation method and application thereof, and belongs to the technical field of functional fiber material preparation.The chrysochlamys zollingeri extract functionalized viscose fiber is formed by wet spinning process of a viscose original solution containing microcapsules, and the viscose original solution containing microcapsules is prepared by mixing a viscose original solution and chrysochlamys zollingeri extract / porous starch composite microcapsules, wherein the viscose original solution is prepared by impregnating cellulose pulp with a sodium hydroxide aqueous solution, carbon disulfide yellowing, and then dissolving and aging in a sodium hydroxide aqueous solution.The chrysochlamys zollingeri extract functionalized viscose fiber is prepared by microcapsule embedding combined with a mild spinning process, so that active ingredients of the chrysochlamys zollingeri extract are maximally retained, long-acting, stable and slow release and anti-inflammatory and soothing effects are achieved, the chrysochlamys zollingeri extract functionalized viscose fiber can be further processed into a functional fabric through a water jet process, and is suitable for high-end sanitary material fields such as infant paper diapers.

The present invention belongs to the field of regenerated cellulose fiber manufacturing and specifically discloses a pore-forming agent for preparing highly absorbent microporous regenerated cellulose fibers. The preparation method of the pore-forming agent comprises: immersing an inorganic carbonate in a solvent, adding an anionic surfactant, and then immersing and compounding at 0-10°C for 5-30 minutes, followed by solid-liquid separation. The resulting solid is the pore-forming agent. The present invention also discloses a method for preparing highly absorbent microporous regenerated cellulose fibers, comprising adding the pore-forming agent to a spinning solution prepared from cellulose pulp, stirring and mixing the solution uniformly, and then degassing the solution to obtain a composite spinning solution; extruding the composite spinning solution from a spinneret into a coagulation bath containing a cationic surfactant, where the solution precipitates in the coagulation bath to obtain microporous fiber strands; and post-treating the microporous fiber strands to obtain highly absorbent microporous regenerated cellulose.

The invention relates to a capsule (1) for receiving a substance for preparing a beverage, said capsule comprising a body having a side wall (2) bordered on either side by a base (3) and by a rim (4) surrounding an opening (5) in said body, the body being formed by moulding a cellulose pulp, and the side wall (2) of said body being covered with a sealing label (18).

The present application relates to a kind of preparation lyocell fiber with corn stalk as raw material method, comprising:1) organic solvent pretreatment: corn stalk particles are placed in the mixed solvent of ethanol and water and are handled to obtain pretreated particles;2) alkali oxygen synergistic treatment: pretreated particles are added to the mixed solution containing sodium hydroxide and hydrogen peroxide to obtain alkali oxygen treated material;3) high temperature hot water treatment to obtain corn stalk cellulose;4) washing and drying to obtain corn stalk cellulose pulp;5) pulp swelling to obtain swollen material;6) vacuum heating dissolution: reduced pressure distillation concentration, to obtain spinning dope;7) spinning coagulation and post-processing.The quality of corn stalk cellulose pulp obtained by the method is good, the prepared lyocell fiber has excellent mechanical properties, and has the advantages of high softness, good dyeing degree, high hygroscopicity, etc.;The process is green and environmentally friendly, and meets the requirements of clean production;Realize the high-value conversion of agricultural waste corn stalk, and have good economic and social benefits.

To provide a cellulose pulp excellent in both particle trapping property and binder property, and to provide a method for producing the cellulose pulp, since beaten fibers are used in a variety of fields due to their excellent ability to capture functional particles, but there are also applications that require not only particle trapping property but also binder property, pulp-like acrylonitrile fibers are known as beaten fibers that combine these properties, but in recent years the environmental impact of plastic waste has become an issue and there has been a demand for a shift to bio-based materials, while conventional bio-based materials containing cellulose have not necessarily been satisfactory in terms of combining the above-mentioned properties.SOLUTION: The cellulose pulp according to the present invention is characterized in that the cellulose pulp fibril area is 15% or more and the fibril area(%) / 100×fine(%) / 100 is 0.05 or more.SELECTED DRAWING: None

The present invention relates to a system for treating delignified cellulose pulp, comprising: consecutive first and second washing devices configured to receive and wash delignified cellulose pulp; an acidic bleaching device arranged to receive cellulose pulp from the second washing device; the post-acid-bleaching washing device is connected to the acid bleaching device and is used for washing the cellulose pulp received from the acid bleaching device; an alkaline bleaching device arranged downstream of the washing device; the alkaline bleaching post-washing device is connected to the alkaline bleaching device and is used for washing the cellulose pulp received from the alkaline bleaching device; a filtrate feeding means arranged to recycle the waste washing liquid from the post-alkaline-bleaching washing means as a diluent between the first washing means and the second washing means and / or as a washing liquid to the first washing means; and a source of water and / or condensate connected to the second washing device to provide a washing liquid.

The invention discloses a preparation method and application of skin-friendly fiber membrane cloth with a bionic knuckle interlocking structure. The preparation method comprises the following steps: 1) mixing dry cellulose pulp and a 20% NMMO aqueous solution according to a solid-to-liquid ratio of 1: 8, and carrying out primary swelling for 20 minutes under negative pressure of-0.08 MPa; raising the temperature, and keeping negative pressure for secondary swelling for 20 minutes; continuously raising the temperature to form a uniform spinning solution; inducing to form periodic knuckle structure fibers; after secondary countercurrent washing and cross-linking treatment, drying and shaping with hot air at 110 DEG C; 2) mixing the knuckle fibers prepared in the step 1) with conventional lyocell fibers according to a mass ratio of (1-3): 10; after lapping, adopting a three-stage spunlace process, and drying to obtain the skin-friendly fiber membrane cloth. According to the skin-friendly fiber membrane cloth with the bionic knuckle interlocking structure, the problem that a facial mask cannot be adaptively attached to a high-curvature area of the face is solved.

The present invention relates to a material suitable for manufacturing hydrophobic cellulose-based light-weight products, such as foams and foam papers, comprisingany type of cellulose pulp from either soft wood or hardwood,2 to 10 wt. % of hydrophobic suspension (OAF) to pulp,0.5 to 5 wt % of Chitosan solution in organic acids to pulp, 3 to 10 wt. % of surfactants to the pulp. The invention also relates to a process of making said material and a use thereof.

The invention discloses a preparation method for prolonging the validity period of erythromycin ethylsuccinate orally disintegrating tablets. The preparation method comprises the following steps: sequentially putting low-substituted hydroxypropyl cellulose, microcrystalline cellulose, aspartame, carboxymethyl starch sodium and polyvinylpolypyrrolidone into a wet granulation mixer, covering with a cover, starting equipment, carrying out low-speed dry mixing for 3 minutes, slowly adding low-concentration hydroxypropyl methylcellulose slurry from a feed port of a pot cover, and carrying out low-speed wet mixing for 3 minutes; stopping the machine, opening the cover, scraping powder on the inner surface of the pot cover and the periphery of the inner side of the pot by using a clean scraper, adding erythromycin ethylsuccinate raw materials, covering the cover, starting equipment, carrying out low-speed wet mixing for 3 minutes, and carrying out high-speed wet mixing for 2 minutes. By improving the medicine production process, the stability and durability of the medicine are improved, so that the validity period of the medicine is prolonged, and meanwhile, the effectiveness and safety of the medicine can still be kept within the prolonged validity period.

This disclosure relates to lyocell materials, smoking articles including the thereof, and methods for preparing said lyocell materials, wherein the lyocell materials can be prepared from a stock solution comprising a cellulose slurry and N-methylmorpholine-N-oxide (NMMO), wherein the cellulose slurry can have a CED viscosity of 4.0 to 11.0, a hemicellulose content of less than 5% by weight, an Fe content of at least 1 ppm and less than 30 ppm by weight, and a Si content of at least 1 ppm and less than 100 ppm by weight.

The utility model discloses a kind of cellulose pulp small bale steel wire winding recovery devices, it is related to viscose fibre production technical field, including the winding of steel wire and is rolled up to the winding component of steel wire, the clamping component of limiting steel wire displacement, the unwinding component for unwinding and winding stand, the winding component, clamping component and unwinding component are set in winding stand top;The winding component includes winding motor and winding shaft, and the winding motor is connected with winding stand top surface, winding shaft is connected with winding motor transmission by speed reducer.The winding of steel wire after shearing is wound on winding shaft by winding component, clamping component is clamped to steel wire, prevent steel wire displacement in winding process, unwinding component is unwound from winding shaft after winding steel wire to unwinding component, realize full-automatic recovery steel wire, improve the production efficiency of this process, reduce artificial labor intensity, reduce labor cost, reduce security risk.

Provided are: a cellulose pulp having excellent particle trapping properties and adhesion; and a method for producing the cellulose pulp. The pulped fiber is applied to various fields due to excellent capturing properties of functional particles, but has applications that require not only particle capturing properties but also cohesiveness. Pulp-like acrylonitrile-based fibers are known as pulped fibers that give consideration to these characteristics, but in recent years, the influence of plastic waste on the environment becomes a problem, and conversion into a bio-based raw material is required. On the other hand, a conventional cellulose-containing bio-based raw material is not necessarily a satisfactory raw material in consideration of the above-mentioned characteristics. The purpose of the present invention is to provide: a cellulose pulp having excellent particle trapping properties and caking properties; and a method for producing the cellulose pulp. The cellulose pulp is characterized in that the fibril area is 15% or more, and the fibril area (%) / 100 * fine fiber (%) / 100 is 0.05 or more.

Nonwoven materials containing cellulose pulp fibers combined with microfibers are disclosed. The microfibers also have a relatively long length. By utilizing a foam forming process, the fibers can be uniformly mixed together to produce a fiber web with significantly high strength properties. By using microfibers, the fiber number / area can be greatly increased, thereby creating a fiber network within the nonwoven structure.

A smoking article (120) includes a tobacco rod (122) comprising a column of filler and a wrapper (123) surrounding the column of filler. The tobacco rod (122) has a circumferential direction, a longitudinal direction (142), a lit end (124), and a mouth end (130). The wrapper (123) includes a base web (140) having generally parallel first and second side edges extending in the longitudinal direction (142) and two ends extending in the circumferential direction wherein the base web (140) is disposed around the column of filler such that the first and second side edges of the base web (140) overlap and form a seam. The base web (140) includes at least one circumferentially extending banded region (126) of fibrous crystalline cellulosic material (126) thereon. The fibrous crystalline cellulosic material (126) is in a condition of having been gravure printed on the base web (140) as a fibrous crystalline cellulosic slurry that comprises water, crystalline cellulose, and chalk wherein the fibrous crystalline cellulosic slurry has a solids content of about 10% or less by weight of the fibrous crystalline cellulosic slurry.

The present application relates to the technical field of fiber production process control, especially to a preparation method of a high-spinnable flame-retardant lyocell fiber with precipitation resistance, comprising the following steps: S1. treating cellulose pulp and regulating hemicellulose through a low-temperature activation process; S2. selecting a flame retardant and adjusting the crystal face exposure ratio of the flame retardant; S3. uniformly mixing the treated cellulose pulp and the flame retardant; S4. then performing free radical scavenging treatment to prepare stable spinning solution; S5. performing spinning through a dry-jet wet spinning process to ensure uniformity of the yarn formation; S6. performing crosslinking treatment on the nascent fiber; and S7. performing quality detection on the finished fiber and screening qualified products. The present application precisely controls the uniform distribution of the crosslinking agent in the fiber cross section through a radial penetration lag gradient formula of the crosslinking agent, ensures the dispersion stability of the flame retardant in the spinning solution, makes the flame retardant and the cellulose molecules form a firm crosslinking combination, effectively locks the flame-retardant components, meets the long-term use requirements of textiles, and improves the safety of the products.