632 results about "Regenerated cellulose" patented technology

The invention belongs to the technical field of fiber modification, and particularly relates to a preparation method of degradable biomass high-water-absorption short fibers. According to the invention, cellulose short fibers such as plant fibers, regenerated cellulose fibers and the like are used as raw materials, and the degradable biomass short fibers with high water absorption performance are prepared through the technological processes of pre-humidification, cake making, hanging into a reaction tank, alkalization, etherification, neutralization, washing, oiling, wet feeding, wet splitting, drying, metering, packaging and the like. The water absorption rate of the obtained degradable biomass high-water-absorption short fiber is 60 to 100g / g, and the fineness of the degradable biomass high-water-absorption short fiber is 1.29 to 10.0 dtex. The fiber can meet the use requirements in the fields of hygienic personal care products, blood-absorbing cotton medical dressings, surgical pads, dirt treatment bags, water-blocking yarns and water-blocking tapes, agriculture, forestry, landscaping, desert greening, oil exploitation and the like, is an environment-friendly and renewable non-petrochemical functional material, is green and environment-friendly, and has a very wide application prospect.

The invention belongs to the technical field of cellulose dissolution, and particularly relates to a method and a solvent for promoting cellulose dissolution and application of the solvent in preparation of high-strength regenerated cellulose fibers. The invention finds for the first time that when a common solvent system of silicon dioxide and cellulose is subjected to ball-milling mixing, the obtained solvent composition not only improves the solubility of the cellulose, but also can obtain a stable spinning solution after dissolving the cellulose, and improves the strength of the regenerated cellulose fiber prepared from the solvent composition.

The invention discloses a multi-stage flow guide double-sided anisotropic sanitary surface layer spunlace material and a preparation method thereof, and relates to the technical field of textile manufacturing. The preparation method of the sanitary surface layer spunlace material comprises the following steps: opening, carding and cross lapping a fiber raw material to obtain a front surface fiber web and a back surface fiber web, overlapping the front surface fiber web and the back surface fiber web in a manner that the front surface is on the upper side and the back surface is on the lower side, performing spunlace reinforcement, finishing after reinforcement, and finally drying and winding to obtain the sanitary surface layer spunlace material. Wherein the front fiber net is made of all-cotton fibers, and the gram weight is 30-50 g / m < 2 >; the reverse side fiber net is made of mixed fibers, and the gram weight is 40-60 g / m < 2 >; the reverse fiber net is obtained by mixing modified regenerated cellulose fibers, polyurethane fibers and bamboo pulp fibers according to the mass ratio of (10-30): (5-10): 100.

The invention relates to a regenerated cellulose-based composite metal organic framework diaphragm as well as a preparation method and application thereof. The diaphragm comprises: a substrate, which is made of regenerated cellulose; the surface of the regenerated cellulose is connected with a sulfonic acid group; the sulfonic acid group establishes a 3D sulfonic acid group network on the surface of the regenerated cellulose; the metal organic framework is arranged on the surface of the substrate; the metal organic framework and the regenerated cellulose can be connected at least through electrostatic interaction and coordination bond interaction. The technical problem to be solved is how to provide a composite diaphragm formed by tightly and stably combining regenerated fibers and a metal organic framework, so that the prepared diaphragm is good in mechanical property and electrochemical property.

The invention discloses a preparation method of flexible hydrogel and application of the flexible hydrogel in a pressure sensor, and belongs to the field of flexible sensors. According to the hydrogel disclosed by the invention, polyvinyl alcohol and regenerated cellulose are used as a hydrogel skeleton, and carboxylated carbon black is doped as a conducting medium. The preparation method comprises the following steps: carrying out carbonization treatment on microcrystalline cellulose in a tubular furnace at high temperature to obtain high-conductivity carbon black; then, functional groups are introduced into the carbon black through modification treatment; the method comprises the following steps: dissolving paper pulp in N-methylmorpholine-N-oxide (NMMO), and carrying out cooling, solidification, dialysis and other process treatments to obtain regenerated cellulose; the flexible conductive hydrogel is obtained by adding conductive carbon black and regenerated cellulose into a PVA solution with a certain concentration and introducing sodium tetraborate at the same time. The regenerated cellulose in the hydrogel is rich in a large number of hydrogen bonds, and the flexibility and the self-healing performance of the hydrogel are remarkably improved through the interaction among the hydrogen bonds. The method disclosed by the invention is simple to operate, the prepared hydrogel has better elasticity, self-healing property and conductivity, and the practical application of the hydrogel in the field of flexible sensors is widened.

The invention discloses a preparation method of long-acting heat-storage warm-keeping antibacterial lyocell fibers, and belongs to the technical field of regenerated cellulose fibers. The preparation method of the lyocell fiber comprises the following steps: step SS1: stirring, mixing and dissolving cellulose pulp, an NMMO organic solvent, zirconium carbide micro powder and nano biochar according to a certain mass ratio at a certain temperature, and then defoaming and filtering to obtain a homogeneous phase mixed spinning solution with the fiber forming solid content concentration of 8%; and step SS2, spraying the obtained mixed spinning solution in air through a spray head, immersing the mixed spinning solution in a low-concentration NMMO aqueous solution for solidification forming, and then drafting, washing, cutting, washing, oiling and drying to obtain the finished fiber. The temperature rise speed of the heat-storage warm-keeping cellulose fiber fabric is far higher than that of a conventional lyocell fiber fabric, the temperature difference can reach 13.5 DEG C when a light source irradiates for 10 min, it is indicated that light energy can be effectively converted into heat energy in the presence of zirconium carbide in fibers, and the good warm-keeping effect is achieved.

Disclosed in the present invention are a flame-retardant PC / ABS composition with a fiber point effect, a preparation method therefor, and a use thereof. The flame-retardant PC / ABS composition with the fiber point effect according to the present invention comprises the following components: a polycarbonate, an ABS resin, a flame retardant, a high-temperature-resistant fiber point, and an anti-dripping agent, wherein the high-temperature-resistant fiber point is a regenerated cellulose fiber having a melting point of greater than or equal to 300ºC. In the flame-retardant PC / ABS composition with the fiber point effect according to the present invention, the high-temperature-resistant fiber point is used instead of a conventional carbon fiber- or glass fiber-reinforced conventional material, so that when the PC / ABS composition is combusted and contracted under heat, the anti-dripping agent can contract and gather at the high-temperature-resistant fiber point serving as a node to greatly slow down the perforation rate, and a carbon layer structure with a star-net-shaped dense distribution can be formed to isolate flame and heat, thus significantly improving flame-retardant properties. Moreover, the impact properties of the PC / ABS composition can also be better maintained, and the surface of the PC / ABS composition has a point-like aesthetic appearance effect similar to that of paint spraying.

The present invention relates to a component for an aerosol provision article. The component comprises a body of material comprising a plurality of fibres formed from regenerated cellulose. The plurality of fibres have a bulk density in the range of about 0.1 g / cm3 to about 0.4 g / cm3. The present invention also relates to an article comprising the component, and to an aerosol provision system comprising the article. The present invention also relates to a method of forming the component

The invention discloses a regenerated cellulose fiber based on gel spinning and a preparation method and application thereof, and belongs to the technical field of bio-based high performance. The preparation method comprises the following steps: activating a cellulose raw material with water / DMAc double solvents, and dissolving the activated cellulose raw material in a LiCl / DMAc system to form a spinning solution with the concentration of 5-15wt%; the solution is extruded out of a methanol coagulating bath with the temperature lower than the spinning solution gel point through a gel spinning technology, and the drafting rate is larger than or equal to 5 times; the nascent fiber is subjected to solvent replacement, washing and drying, and the regenerated cellulose fiber is obtained. The tensile strength of the prepared regenerated cellulose fiber reaches 664 MPa (2.2 times of that of viscose), and the elastic modulus is 41 GPa; the fiber roundness index is 0.80, and the surface smoothness Ra is less than or equal to 0.1 mu m (SEM verification); and the raw material cost is reduced by 30%.

The invention discloses a preparation method of a wood-based carbon material for improving the performance of a supercapacitor, and the method comprises the steps: cutting Balsa wood into wood chips, and immersing the wood chips into absolute ethyl alcohol to obtain a natural wood chip sample; lignin is removed, and delignification wood chips are obtained; dissolving cellulose through a high-concentration zinc chloride solution, and separating out regenerated cellulose to obtain a wood sample RC (at) ZnODWx with regenerated cellulose and ZnO growing on the surface; placing the regenerated cellulose wood chips in a tubular furnace to obtain a wood-based graded porous carbon product, obtaining a carbon sample named CRCDWx, and cutting; a wood-based hierarchical porous carbon electrode is used as a positive electrode, a zinc foil is used as a negative electrode, organic gel is used as an electrolyte and a diaphragm, and the CRCDW-based zinc ion hybrid supercapacitor is prepared with a metal shell. The wood-based hierarchical porous carbon material capable of improving the performance of the supercapacitor is prepared, the cost is low, the material has reproducibility, dependence on a traditional electrode material is reduced, environmental pollution is reduced, and a prospect is provided for high-value conversion of wood raw materials and application of the wood raw materials to the high-performance supercapacitor.

This invention relates to a biomass-based gel electrolyte membrane, its preparation method, and its application. The method includes preparing regenerated cellulose using a sol-gel method, adding sodium alginate and zinc chloride solution, and rapidly constructing a biomass-based composite gel electrolyte with a dual-network structure through metal ion coordination crosslinking. The biomass-based gel electrolyte membrane is obtained by adsorbing an aqueous electrolyte onto a gel membrane with a dual-network structure. This gel electrolyte membrane is then assembled with a zinc anode and a vanadium pentoxide cathode to obtain a zinc-ion battery. This invention features a simple method, readily available and inexpensive raw materials, easy product molding, convenient operation and control, and is conducive to industrial production. The prepared composite gel electrolyte membrane has a dual-network structure, exhibiting good stability, liquid retention capacity, and ionic conductivity, and demonstrates excellent cycle capacity and lifespan when applied to aqueous zinc-ion batteries.

The present invention relates to a material for use as a component in an aerosol provision article. The material comprises a plurality of fibres comprising regenerated cellulose. The material has a bulk density in the range of about 0.1 g / cm3 to about 0.4 g / cm3. The present invention also relates to a component for use in an aerosol provision article. The component comprises the material. The present invention also relates to an article comprising the component, to an aerosol provision system comprising the article, and a method for forming the material.

The invention provides an environment-friendly biodegradable waterproof coiled material and a preparation method thereof, and belongs to the field of waterproof coiled materials. The coiled material design comprises a plurality of functional layers, and firstly, high-toughness and degradable bio-based fibers and natural fibers are selected in a reinforcing layer so as to provide reliable mechanical properties and environment-friendly characteristics; the waterproof functional layer adopts a renewable bio-based polymer, so that not only is the adaptability of the material improved, but also the mechanical property of the material is enhanced through combination with an inorganic filler; montmorillonite, bentonite and regenerated cellulose are introduced into the layer to serve as filler and have a synergistic effect, so that the waterproof performance, the high temperature resistance and the aging resistance are remarkably improved, and the service life is prolonged. The surface protection layer is made of modified polyurethane, fluorinated polyurethane and organic silicon resin are combined, and hydrophobicity, pollution resistance, heat resistance and ultraviolet resistance are enhanced.

The present invention discloses a microecological balance fiber containing probiotics and a preparation method thereof, wherein the fiber comprises the following materials in parts by weight: 95-99 parts of regenerated cellulose, 1-3 parts of probiotic microcapsules, and 1-3 parts of fiber additives; the fiber additives comprise the following materials in parts by weight: 0.5-1 parts of emulsifiers, 0.5-1 parts of antibacterial agents, 0.5-1 parts of dispersants, and 0.5-1 parts of adhesives; the probiotics are powders in a microcapsule state. The beneficial effects of the present invention are that the inactivated probiotics contained in the fiber can be slowly released, and the position of the pathogenic bacteria on the skin is occupied to inhibit the reproduction of the pathogenic bacteria on the skin, improve human skin problems, and avoid the occurrence of skin problems; in addition, the reproduction of pathogenic bacteria on the skin is inhibited to avoid diseases from entering the mouth.

The invention provides a waste cotton fabric synchronous decolorization and cellulose dissolution regeneration method based on a deep eutectic solvent, and relates to the technical field of waste cotton fabric recovery treatment. According to the method disclosed by the invention, the in-situ decoloration of the dye in the cotton fabric and the efficient dissociation of a cellulose hydrogen bond network are synchronously realized under the process condition of 30-100 DEG C by selecting the specific eutectic solvent, so that the decoloration and the dissolution are cooperatively completed in the same step; and the problem of fiber damage or incomplete decoloration caused by condition conflict in step-by-step treatment is effectively avoided. On the basis, the dye and the eutectic solvent are synchronously replaced and separated in a coagulating bath by combining wet spinning, so that the process is simplified, and the high mechanical property of the regenerated cellulose fiber is realized. Besides, the dye and the deep-eutectic solvent in the process can be recycled, a resource full-circulation green technical path is formed, and a solution with a wide application prospect is provided for high-valued regeneration of the waste textiles.

The invention discloses a method for separating and recycling cellulose-containing waste textiles, and belongs to the technical field of cellulose textiles. Comprising the following steps: opening the cellulose-containing waste textile, and mixing with a cellulose solvent to obtain a mixture of a cellulose solution and an undissolved textile; and carrying out solid-liquid separation, recovering the cellulose solution, and washing and drying the undissolved fabric to obtain the non-cellulose component fabric. According to the method for separating, recycling and reusing the cellulose waste textiles, the alkali concentration is controlled to be 4-10%, the temperature is controlled to be 0-20 DEG C, degradation and damage of the non-cellulose component textiles are avoided to the maximum extent, and recycling of the non-cellulose component textiles is guaranteed. Meanwhile, the cellulose solution obtained by the method can realize simple and low-cost reutilization and product remanufacturing, and regenerated cellulose fibers, cellulose films and cellulose plastics can be obtained in modes of wet spinning, wet film forming, casting molding and the like.

The invention relates to the technical field of papermaking, in particular to a preparation method of high-definition electronic screen protection paper. According to the method, regenerated cellulose fibers serve as main raw materials, functional composite fibers of a core-shell structure are constructed, a core layer is the regenerated cellulose fibers, a shell layer is a polypyrrole / graphene composite conductive layer, and the lasting antistatic performance is achieved; meanwhile, the surface-modified nano silicon dioxide aerogel particles are introduced, so that the optical performance and the mechanical strength are improved; then compounding with polyimide fibers modified by a silane coupling agent, adding a bio-based wet strength agent and a fluorocarbon defoaming agent, and carrying out the steps of plasma pretreatment, pulping, on-net papermaking, controllable drying, magnetron sputtering surface treatment and the like to prepare the protective paper. The obtained protective paper has the characteristics of being ultrathin, high in strength, high in light transmittance, lasting in antistatic property and the like, and is suitable for protection of high-end liquid crystal display screens and OLED screens.

The invention relates to the technical field of textile fabric processing, in particular to a plant-dyed woven fabric formed by blending alginate fibers and regenerated cellulose fibers and a processing technology of the plant-dyed woven fabric. The plant-dyed woven fabric is prepared from the following raw materials in percentage by mass: 10-40% of alginate fiber and the balance of regenerated cellulose fiber, and the plant-dyed woven fabric is prepared from the following raw materials in percentage by mass: 10-40% of alginate fiber and the balance of regenerated cellulose fiber; the yarn count range of the plant dyed woven fabric is 80-12 S; the processing technology adopts a weaving mode for production and processing, and sequentially comprises the procedures of warp sizing, weaving and dyeing and finishing. The advantages of the alginate fiber and the regenerated cellulose can be combined, and the prepared plant dyed woven fabric is excellent in performance; the dissolution loss risk of the alginate fibers in the sizing, weaving and dyeing and finishing procedures can be reduced, the loss of the alginate fibers caused by weaving is reduced, and the application of the alginate fibers in the field of weaving can be realized; dyeing can be realized in a salt-free and alkali-free environment, the coloring depth is ensured, and the practicability is high.

Recycle fiber bleaching includes an oxygen pre-treatment to activate the fiber for further bleaching. A preferred method of making a high brightness papermaking pulp from recycled cellulose fiber includes: (a) pre-treating a first recycled cellulosic fiber mix with oxygen, said first recycled cellulosic fiber mix having a first high Kappa number prior to pre-treatment and a reduced Kappa number after pre-treatment that is lower than said first high Kappa number; and (b) blending the pre-treated first recycled cellulosic fiber mix with the reduced Kappa number with a second recycled cellulosic fiber mix having a second Kappa number lower than the first high Kappa number of the first recycled cellulosic fiber mix; and (c) oxidatively bleaching the blended recycled cellulosic fiber mix of step (b); and optionally (d) reductively bleaching the blended recycled cellulosic fiber mix of step (c).

The invention discloses a regenerated cellulose fiber quilt core material and a preparation method thereof.The regenerated cellulose fiber / polylactic acid fiber mixed solution and a hibiscus cannabinus fiber solution are subjected to hollow coaxial spinning, the fibers obtained through spinning are cooled through an asymmetric cooling method, the obtained hollow coaxial fibers generate asymmetric curls, and then the regenerated cellulose fiber quilt core material is obtained. The elasticity and the restorability of the regenerated cellulose fibers and the polylactic acid fibers are combined with the hardness and the mechanical strength of the hibiscus cannabinus fibers, so that the elasticity of the quilt core material can ensure the bulkiness and the mechanical strength, and block masses and cavities caused by non-uniform fiber dispersion are avoided; the kenaf fibers are subjected to steam explosion pretreatment, and the steam explosion treatment process comprises the steps that the kenaf fibers are soaked in a sodium hydroxide solution, taken out, dried and then placed in a steam explosion device to be subjected to steam explosion treatment, the crystallinity and the polymerization degree of the kenaf fibers are increased, and the bulkiness of the fibers can be improved; and a better space structure is kept in the quilt core material.

The present invention relates to a component for an aerosol provision article. The component comprises a body of material having an annular cross-section and comprising a plurality of fibres formed from regenerated cellulose. The present invention also relates to an article comprising the component, and to an aerosol provision system comprising the article. The present invention also relates to a method of forming the component.

The invention discloses a wool fiber quilt core material and a preparation method thereof.The preparation method comprises the steps that regenerated cellulose fibers and polylactic acid fibers are soaked in a cationic antibacterial agent solution containing titanium dioxide after being soaked in an alkali solution and subjected to ultrasonic treatment respectively, and wool fibers are soaked in a silicon dioxide dispersion solution; the treated wool fibers, regenerated cellulose fibers and polylactic acid fibers are carded and laid to be made into a wool fiber quilt core material, titanium dioxide can promote cohesion between fibers while generating an antibacterial effect through photocatalysis, electrostatic adsorption effects exist between silicon dioxide and silicon dioxide and between a cationic antibacterial agent and silicon dioxide, and therefore the wool fiber quilt core material is formed. According to the wool quilt core material, the compact structure of the quilt core material can be guaranteed through the electrostatic adsorption effect, the heat retention property is achieved, meanwhile, the synergistic antibacterial effect is achieved between silicon dioxide and silicon dioxide on the fibers, the cationic antibacterial agent and silicon dioxide, and the defects that in the prior art, the heat retention effect becomes poor and peculiar smell is generated after the wool quilt core material is used for a long time are overcome.

The present invention relates to a component for an aerosol provision article. The component comprises a material comprising a plurality of fibres comprising regenerated cellulose, and an aerosol-modifying agent release component. The present invention also relates to an article comprising the component, and to an aerosol provision system comprising the article. The present invention also relates to a method of forming the component.

The invention discloses a regenerated cellulose industrial filament spinning solution, a preparation method thereof and a preparation method of regenerated cellulose industrial filaments. The preparation method of regenerated cellulose industrial filament spinning comprises the following steps: carrying out alkalization treatment on an ionic liquid aqueous solution; preparing cellulose pulp; premixing the alkalized solution and cellulose pulp; preparing a spinning solution; preparing cellulose industrial filaments from the test lines; under pushing of nitrogen and a booster pump, the test line spinning solution is extruded through a filter and a spinning assembly in sequence, and regenerated cellulose hydrogel filaments are obtained through side blowing cooling and coagulating bath forming; and drawing, washing, drying and rolling the gel to obtain a finished product. According to the regenerated cellulose industrial filament spinning stock solution, the preparation method thereof and the preparation method of the regenerated cellulose industrial filament, high-molecular-weight cellulose pulp can be uniformly dissolved with high quality; the problems of cellulose degradation and high energy consumption caused by temperature rise and dissolution time prolonging in the traditional process are avoided.

The invention relates to the technical field of medical materials, and discloses degradable medical gauze based on plant fibers and a production process of the degradable medical gauze. 0.5 to 2.0 parts of tannic acid; 0.1 to 1.0 part of boric acid; and 100 parts of a 1-allyl-3-methylimidazole chloride salt. The production process comprises the following steps: dissolving the raw materials in an ionic liquid to form a homogeneous solution, coating to form a film, then carrying out solidification regeneration treatment in an alcohol-water solution, controlling the residual quantity of the ionic liquid in a final product, and finally drying. In the solidification step, part of ionic liquid residues are controlled to serve as an internal plasticizer, meanwhile, an antibacterial component tannic acid is embedded in a cellulose matrix, long-acting and stable functions are achieved, the problems that a traditional regenerated cellulose material is rigid, and functional components are prone to falling off are solved, and the service life of the regenerated cellulose material is prolonged. The obtained gauze has biodegradability, flexibility and long-acting antibacterial property at the same time.

The invention discloses a moisture-absorbing, breathable and flatly wrapped flexible elastic six-layer fabric, and an application and a preparation method thereof, and belongs to the technical field of functional textile materials. According to the invention, the regenerated cellulose fibers, the spandex filaments, the semi-dull polyester filaments and the cross-section absorption and discharge semi-dull polyester filaments are used as raw materials, and through a specific weaving process, the soft elastic six-layer sandwich fabric with moisture absorption, breathability and smooth wrapping feeling is obtained. The fabric has the advantages of moisture absorption, breathability, softness, skin friendliness, elastic bearing feeling, smooth appearance and elastic recovery wrapping feeling, and is suitable for products such as fitted covers, pillowcases and clothes in four seasons.

The invention relates to the field of functional fabrics, in particular to an antistatic warm-keeping rabbit wool silk fabric. Which comprises a body, the body comprises a surface layer and a bottom layer connected with the surface layer, and is characterized in that the surface layer comprises 40-50% of regenerated cellulose fibers, 8-15% of spandex, 2-5% of rabbit wool and the balance acrylic fibers; the fiber content of the bottom layer is as follows: 22-30% of regenerated cellulose fiber, 3-5% of silk, 8-15% of spandex and the balance of acrylic fiber. The bottom layer containing silk and the surface layer containing rabbit wool are formed, so that the fabric has better antistatic property, heat preservation property and pilling resistance.

There is described a method of manufacturing a security article, said method comprising the steps of: introducing into an offset printing device a transparent film comprising a non-fibrous substrate layer of regenerated cellulose; disposing an opacification layer on at least a portion of at least one surface of said film by a first offset printing step; and disposing printed information on at least a portion of said opacification layer by a second offset printing step.

The invention discloses biomass hard carbon and a preparation method and application thereof, and belongs to the technical field of carbon material preparation. The preparation method of the biomass hard carbon comprises the following steps: providing a dissolving solution of cellulose / chitin; adding the waste biomass into the dissolved solution, and stirring to obtain a solution dissolved with cellulose / chitin; directly adding a pickling solution for pickling to obtain regenerated cellulose / chitin; finally, pre-oxidation crosslinking and high-temperature carbonization are conducted, and the biomass hard carbon is prepared. According to the invention, the crystallinity of the regenerated cellulose is regulated and controlled, and a crystalline region and an amorphous region of the regenerated cellulose are reasonably matched, so that the derived biomass hard carbon has rich closed-cell structures and closed-cell rate and brings excellent electrochemical performance to a sodium-ion battery as a negative electrode material. The preparation method is mild in treatment condition and simple in treatment process, does not need to consume a large amount of acid and alkali, and has the advantages of high efficiency, economy and environmental friendliness.

A pre-wetted and dispersible wipe includes regenerated cellulose fibers and wood pulp fibers entangled in a nonwoven web. A wetting solution is applied to the nonwoven web. The wetting solution includes one or both of an amine functional silicone and a polyamine functional silicone.