1273 results about "Cellulose fiber" patented technology

A composite can include cellulose fiber and foam binding the cellulose fiber. A method for manufacturing a composite can comprise mixing a plurality of ingredients to form a pre-foam mixture, foaming the pre-foam mixture to produce a foam, mixing the foam with cellulose fiber to form a composite material, and curing the composite material.

An absorbent retail paper product comprised of cellulosic fibers having a concentration of 1, 3-dichloro-2-propanol that is not detected to 50 ppb, as measured using the ACOC official method 2000.0150, a concentration of 3-monochloro-1, 2-propanediol that is not detected to 1000 ppb, as measured using the ACOC official method 2000.0150, as measured by the "adipic acid test", as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150. Polyaminoamide-epihalohydrin at a concentration of not detected to 0.09% has a lateral wet strength of from 80 n / m to 200 n / m wherein all of the cellulosic fibers contained in the absorbent paper product are non-synthetic, the cellulosic fibers and the absorbent paper product are substantially free of formaldehyde.

The invention discloses bone cement for orthopedic repair and a preparation method thereof, and relates to the technical field of bone cement. The bone cement for orthopedic repair comprises solid-phase powder and a liquid-phase component, the solid-phase powder comprises the following components in parts by weight: 55-65 parts of composite calcium phosphate, 10-15 parts of bioactive glass, 2-3 parts of a developing agent, 1-2 parts of hydroxyapatite, 8-12 parts of a modified toughening agent and 2-3 parts of nano cellulose fibers; the liquid phase component is prepared from the following components in parts by weight: 40 to 50 parts of a sodium alginate solution, 10 to 20 parts of methacrylated gelatin, 0.5 to 1 part of transglutaminase, 30 to 60 parts of a citric acid buffer solution and 1 to 2 parts of an antibacterial agent. The preparation method comprises the following steps: reacting pentaerythritol with 12-oxododecanoic acid to obtain an intermediate 1, and reacting the intermediate 1 with dopamine to prepare the modified toughening agent. The bone cement for orthopedic repair prepared by the invention has good mechanical, self-repairing and antibacterial properties.

The invention belongs to the field of new materials, and particularly relates to preparation and application of chemical copper plating cellulose composite fibers. The preparation method of the composite fiber comprises the following steps: (1) mixing absolute ethyl alcohol, ammonia water and water in proportion, adding cellulose fiber, heating, stirring and uniformly mixing, adding a dopamine hydrochloride solution, washing and drying to obtain a polydopamine coating / cellulose composite fiber; (2) adding the composite fiber prepared in the step (1) into an alkaline solution, adding a silver nitrate solution, stirring, washing and drying to obtain a polydopamine reduced nano-silver / cellulose composite fiber; and (3) adding the composite fiber obtained in the step (2) into a chemical plating solution containing copper ions for plating to obtain the chemical copper-plated cellulose composite fiber. The electroless copper-plated cellulose composite fiber shows outstanding electric heating and photo-thermal properties, can accurately capture electrocardiosignals of a human body before and after movement at the same time, and provides a new thought for development of wearable electronic fabrics and intelligent sensors.

The invention belongs to the technical field of textile materials, and particularly relates to an antibacterial regenerated wool blended yarn and a production process thereof.The antibacterial regenerated wool blended yarn is prepared from, by weight, 35 parts of regenerated wool fibers, 25-33 parts of LF tencel, 15-27 parts of cellulosic fibers, 8-12 parts of antibacterial chinlon 6 and 5 parts of an antibacterial complexing agent; according to the regenerated wool fiber prepared from the waste wool product through a synergistic improvement process of biological enzyme targeted cleaning and plasma etching, the natural properties of the wool fiber are reserved, and meanwhile, a surface pore structure capable of being combined with an antibacterial complexing agent is also formed; through a Z / S double-twist asynchronous spinning process, dynamic balance of a multilayer structure and hygroscopicity and strength of the blended yarn is achieved, and environment friendliness and commercial feasibility are both achieved.

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.

A non-woven battery separator and processes for forming the non-woven battery separator includes a fiber blend including cellulose fibers, microfibrillated fibers, and optionally polyester and / or aramid fibers. Also disclosed are batteries including the non-woven battery separator. During fabrication, the non-woven battery separator can be effectively dried at temperatures between 120°C and 180°C, which results in the fibers absorbing water when in use. Some battery electrolytes such as lithium hexafluorophosphate react with water to form hydrogen fluoride (HF), which can be corrosive and shorten battery lifecycles and affect performance. Absorbing water from the electrolyte increases the battery life cycle by reducing HF generation.

The present invention deals with a heat and moisture exchange filter with biocidal activity for medical ventilation equipment that comprises polymeric cellulose fibers impregnated with silver nanoparticles (AgNPs). The heat and moisture exchanger filter can be used in intubated patients under artificial ventilation in anesthesiology and intensive care and allows robust replacement, a fundamental utility for protection against nosocomial cross-contamination infections caused by microorganisms, such as bacteria, fungi, yeasts and viruses.The invention also deals with the method of preparing the heat and moisture exchange filter with biocidal activity and the use of silver nanoparticles.

The invention discloses ink with high dye utilization rate for inkjet printing and a preparation method of the ink. The ink is prepared from the following components in percentage by mass: 1.7-3.7% of a cationic auxiliary agent; 3.5%-3.8% of a reactive dye; 22.9% to 28.5% of a viscosity modifier; 0.4%-0.7% of a surfactant; and the balance of deionized water. The method effectively solves the problems of long treatment flow, high consumption of chemicals and energy sources and large discharge amount of colored wastewater caused by low utilization rate of the reactive dye; the dye utilization rate reaches 98.5% or above, and the ink-jet printing ink can be widely applied to ink-jet printing of cellulose fiber fabrics such as cotton, hemp and lyocell; the fabric does not need to be subjected to pretreatment and water washing treatment; and the preparation method is simple, the treatment process is short, the ink stability is good, and the ink can be used in a high-speed printing mode with the injection frequency of 30 KHz.

The invention belongs to the field of cellulose materials, and particularly relates to a functional cellulose fiber as well as a preparation method and application thereof. The functional cellulose fiber comprises a core structure formed by fiber raw materials and a skin layer structure formed by functional components, the skin layer structure covers the surface of the core structure, and the functional components are selected from one or more of silk fibroin, sodium alginate and soybean protein. The cellulose functional fiber with the skin-core structure is prepared, the core layer is a cellulose layer, high strength is provided, the skin layer is a functional layer, and good comfort is provided.

The invention belongs to the technical field of textile dyeing, and provides a salt-free alkali-free electrostatic spray dyeing method for cellulosic fibers, which comprises the following steps: uniformly mixing polyethylene oxide, reactive dye and solvent to obtain electrostatic dye liquor; the method comprises the following steps: dissolving a cationic modifier and an alkaline color fixing agent in water to prepare a cationic modified solution, padding a cellulose fiber fabric, and drying to obtain a cationic modified cellulose fiber fabric; and spraying the electrostatic dyeing liquid to the surface of the cationic modified cellulose fiber fabric through electrostatic spraying, and carrying out open-width steaming color fixation and cleaning to obtain the electrostatic spraying dyed cellulose fiber fabric. The electrostatic spraying technology is adopted to replace traditional water bath dyeing, excellent K / S value, dye uptake and color fastness can be achieved without consuming a large amount of salt, alkali and water, water resource consumption and environmental pollution are remarkably reduced, and high-salinity and high-chroma printing and dyeing wastewater is avoided.

A novel seed coating composition. The coating comprises a wax emulsion, a polymeric binder, a fibrous material, and a filler having a bulk density of 0.05 to 0.80 g / mL. In particular, the coating is selected from polyethylene or Fischer-Tropsch wax emulsions, polyvinyl-based binders, talc and cellulosic fibers. When applied to seed, the seed coating composition provides water permeability, good wear resistance, low dust emissions, short drying time, good flowability and plantability, low caking, good modification and / or coverage, higher ability to add a greater number of desired nutrients and seed and plant protectants, as well as the ability to coat seeds and plants. And / or increasing seed size to improve plantability. The use of the seed coating composition for coating a seed, a method of forming a coated seed using the composition, and the resulting coated seed are also provided.

The invention belongs to the technical field of concrete, and particularly relates to high-water-permeability recycled concrete. The concrete is prepared from 170 to 190 parts of water, 300 to 320 parts of cement, 90 to 120 parts of fly ash, 80 to 120 parts of silica fume, 90 to 110 parts of rice hull ash, 580 to 620 parts of medium sand, 430 to 470 parts of recycled fine aggregate, 1000 to 1100 parts of recycled coarse aggregate, 70 to 100 parts of ceramsite, 6 to 8 parts of a water reducing agent, 2 to 4 parts of an air entraining agent, 1 to 3 parts of a retarder, 110 to 130 parts of fly ash hollow microspheres, 70 to 90 parts of steel slag powder, 30 to 40 parts of silica sol, 20 to 30 parts of cellulosic fibers and 40 to 50 parts of an alkaline activator. 50-60 parts of an organic porous waste material; the composite material has abundant pore structures, strong water permeability, moderate strength, high resource utilization rate, outstanding environmental protection property and the like, improves the utilization rate of rainwater resources, and promotes continuous improvement of ecological environment.

A multilayer packaging material includes a substrate formed of a cellulosic fiber-based material. The substrate has a first major surface and a second major surface opposite the first major surface. An oxygen barrier layer is formed of a PVOH material attached to the substrate, wherein the oxygen barrier layer is an innermost layer of the multilayer packaging material and further wherein the oxygen barrier layer is heat sealable. At least one moisture barrier layer is attached to the substrate, the moisture barrier layer selected from an inner moisture barrier layer disposed intermediate the substrate and the oxygen barrier layer and an outer moisture barrier layer disposed on the second major surface of the substrate. In further aspects, a packaging article, a method for making a multilayer packaging material, and a method for packaging a product are provided.

The invention belongs to the technical field of textiles, and particularly relates to an anti-sticking wool fabric based on cellulosic fibers and a preparation method of the anti-sticking wool fabric. The preparation method of the anti-hair-sticking fabric based on the cellulosic fibers comprises the following steps: weaving fibers with the mass percentage content of the cellulosic fibers being greater than or equal to 50wt% into gray fabric, and sequentially carrying out mercerizing treatment and low-surface-energy after-treatment on the gray fabric. The smoothness of the gray fabric is improved through mercerizing treatment, and the possibility that hair is mechanically embedded into and adheres to the gray fabric is reduced; specific raw materials (fibers with the mass percentage content of cellulose fibers larger than or equal to 50 wt%) are selected to endow the fabric with the antistatic effect, and the electrostatic adsorption effect of gray fabric is reduced; van der Waals force of the gray fabric can be reduced through low-surface-energy after-treatment, so that the adhesion is reduced, and the fabric is endowed with an anti-hair-sticking effect.

Method for producing of a sound-absorbing panel (F), comprising a step of preparing a predetermined amount of cellulose fibres and a step of immersing the cellulose fibres in a first water basin (100) to form a cellulose pulp (P1). The method then comprises a step of preparing a predetermined amount of textile fibres (V) and a step of mixing, in water, the cellulose pulp (P1) with the textile fibres (V) to obtain a final pulp (P3) and a step of depositing the final pulp (P3) on a forming mould (300). The method then comprises a step of pressing at least the final pulp (P3) in order to cause an at least partial removal of the water contained in the final pulp (P3) making a fibre mat (T) and a step of drying the fibre mat (T) so as to cause evaporation of the water remained in the fibre mat (T) making a sound-absorbing panel (F).

The invention relates to the technical field of dyes, and particularly discloses a pyrimidinyl acid ornamental blue reactive dye as well as a preparation method and application thereof. According to the invention, trichloropyrimidine is introduced into the ornamental blue structure as an active group, and the reactivity of the trichloropyrimidine is lower than that of an active group of a cyanuric chloride structure, so that the pyrimidine acid ornamental blue reactive dye is more stable and not easy to hydrolyze after being combined with cellulosic fibers, the acid-resistant and alkali-resistant stability of a dye-fiber covalent bond is better, and the dyeing performance is more excellent; in addition, water-soluble groups such as a sulfonic acid group and a carboxyl group are introduced, so that the water solubility of the pyrimidinic acid blue reactive dye is improved. Moreover, the pyrimidinyl acid ornamental blue reactive dye prepared by the invention has a good dyeing effect on chemical fibers such as acrylic fibers, spandex and the like and blend fiber fabrics thereof, the adaptability of ornamental blue is further improved, the dye is stable in dyeing, deep in coloring and good in color fixing effect, meanwhile, the acid and alkali resistance of the fabrics is improved, and the pyrimidinyl acid ornamental blue reactive dye has a wide application prospect.

The invention relates to the technical field of spunlace non-woven materials, and particularly discloses a medical high-performance polylactic acid spunlace composite non-woven material and a preparation method thereof.The preparation method comprises the steps that firstly, polylactic acid fibers and crude natural cellulose fibers are modified, and a compatilizer PLGA-PEG-MDI segmented copolymer is prepared; the preparation process of the spunlace composite non-woven material comprises the steps that viscose is subjected to plasma activation, a compatilizer is sprayed to be loosened and mixed with modified polylactic acid fibers, cross lapping is carried out, polylactic acid added with the compatilizer is melt-blown to the surface of the lapping, and the spunlace composite non-woven material is obtained. And finally, paving the modified crude natural cellulose on the surface of the melt-blown layer to form the spunlace composite non-woven material with good antibacterial property, one-way wet permeability and degradability.

The invention relates to a machine (1) and to a corresponding method for producing an air-laid fibrous web (309). The machine (1) comprises: a) a raw material preparation system for a low-water preparation of cellulose-containing fibers in order to form individual fibers and / or fiber bundles (209); b) a dry-forming device (4) for dry-forming the individual fibers and / or fiber bundles (209) in an air stream in order to form a flat fiber fabric (300) on a forming belt (40); c) an application device (71) for applying a fluid, preferably water and / or a water-additive mixture, to the fiber fabric (300); d) a solidifying device (8) for solidifying the flat fiber fabric (300) by applying pressure in a press nip (80) when the fiber fabric (300) is guided through the press nip (80) on a press belt (41) onto which the fiber fabric (300) was previously transferred from the forming belt (40) in a transfer region (100); and additionally a fluid depositing device which is designed to then deposit the fluid on the press belt (41), the press belt (41) serving as an application device (71) for applying the fluid to the fiber fabric (300).

Permafrost thawing prevention may involve deploying a cooling geotextile onto a permafrost soil. The geotextile may include a biomass scaffold comprising natural plant-based fibers. The geotextile may further include a cellulose layer comprising cellulose fibers laminated onto the biomass scaffold such that the cellulose fibers are physically entangled with the plant-based fibers. The geotextile may further include a hydrophobic and biodegradable coating which defines at least one surface of the geotextile. The geotextile may be optically opaque, exhibits high solar reflectivity, and maintains high mid-infrared emissivity to enable passive radiative cooling.

A repulpable insulation material includes a batt formed of a mixture of thermoplastic binder fibers and cellulose fibers bound together by the thermoplastic binder fibers, the thermoplastic binder fibers making up about 0.5% to 25% by weight of the batt, the repulpable insulation material having a weight within a range from 1000 GSM to 1600 GSM, wherein subjecting the repulpable insulation material to a repulpability test produces greater than 85% fiber yield.

The present application relates to the technical field of nonwoven materials, and in particular to a composite nonwoven material and a preparation method therefor, and a device for preparing the composite nonwoven material. According to the present application, the provision of upper and lower fiber web layers is conducive to subsequent thermal bonding, thereby greatly improving the overall strength of a dry / wet fiber web, increasing tensile strength, reducing the occurrence of structural tearing, and greatly reducing the linting rate during use. In the present application, mixed spray layers are formed by blending cellulosic fibers and polymer filaments, wherein the cellulosic fibers impart excellent hydrophilic performance and softness to the nonwoven material; and an absorbent core layer greatly improves the water absorption rate and water absorption capacity of the material. The composite nonwoven material provided by the present application has good mechanical properties, excellent water absorption and wear resistance, and relatively low linting properties.

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 invention discloses a 0.1 mu m ultra-fine filtering material as well as a preparation method and application thereof, relates to the technical field of filtering materials, and solves the problems of insufficient precision and high maintenance cost of an existing oil filtering technology. Lignocellulose is bleached after being subjected to alkali treatment, nano cellulose fibers are obtained through a high-pressure homogenization method or an enzymolysis method, and the nano cellulose fibers are dispersed in water to be subjected to ultrasonic treatment to obtain main slurry; modifying the surface of the mesoporous SiO2 by using a silane coupling agent; adding chopped aramid fibers, surface-modified mesoporous SiO2 and nano-silver into the main slurry, and uniformly mixing with stirring and ultrasonic treatment; performing vacuum filtration on the crude fiber slurry to obtain a supporting layer; performing vacuum filtration on the slurry to obtain a middle layer; performing vacuum filtration on the main slurry to obtain a surface layer, pressing the three layers together, and sequentially performing pre-freezing, freeze-drying and chemical crosslinking; carrying out hot-pressing wrinkle treatment, and then spirally winding; a polypyrrole coating is electrostatically sprayed on the surface, and then a fluorosilane oleophobic coating is subjected to vapor deposition. The device can be applied to lubricating oil filtration and has a wide application prospect.

The present invention relates to a method for producing a dye-capturing non-woven fabric, the method comprising the steps of providing a non-woven substrate and applying a composition to the non-woven substrate, the composition having binding and dye-capturing functionalities. The present invention further relates to a dye-capturing non-woven fabric obtainable by such a method and a dye-capturing non-woven fabric comprising a non-woven substrate comprising cellulose fibers and a dye-capturing agent adhering to the non-woven substrate by means of a binder and / or a dye-capturing agent being absorbed in the non-woven substrate.

The invention belongs to the field of textile dyeing and finishing, and relates to a dyeing method capable of regulating and controlling in-situ assembly of dye molecules through cellulose fiber graft modification. The dyeing method comprises the following steps: soaking a cellulosic fiber textile in a 4-beta-hydroxyethylsulfonyl sulfate aniline-2-sulfonic acid aqueous solution for reaction, washing with water, drying, soaking in a hydrochloric acid aqueous solution, adding a sodium nitrite aqueous solution for reaction, adding urea, washing with water, and drying to obtain the cellulosic fiber textile. Soaking in a coupling component aqueous solution containing a coupling component, sodium hydroxide and sodium carbonate for reaction, alternately washing with hot water and cold water, and drying to obtain the dyed textile. The dyeing method is mild in condition, dye hydrolysis is avoided, the dye uptake and the dyeing fastness are improved, and the dye utilization rate is high; high temperature and a large amount of inorganic salt or auxiliaries are not needed, the dye is directly generated and fixed in the fiber, energy consumption is remarkably reduced, and waste water treatment pressure is reduced.

The invention belongs to the technical field of friction power generation materials, and particularly relates to a cellulose-based aerogel triboelectric material and a preparation method thereof. Comprising the following steps: gelatinizing first chitosan, and adding a first cross-linking agent for reaction to obtain first chitosan fibers; gelatinizing second chitosan, then carrying out homogenization treatment, adding a second cross-linking agent, and carrying out a reaction to obtain second chitosan fibers; sequentially adding a first chitosan fiber and a second chitosan fiber into the homogenized cellulose fiber dispersion liquid, sequentially adding a water-soluble metal salt and a third cross-linking agent, stirring and dispersing, carrying out a cross-linking reaction, and freezing to obtain a cellulose-based aerogel precursor; immersing into a solvent for solvent replacement, and extruding and drying to obtain the cellulose-based aerogel triboelectric material. According to the invention, the dielectric property of the cellulose-based triboelectric material is improved, the mechanical stability and humidity adaptability of the material are enhanced, and the energy efficiency of the material in a self-powered process in a high-humidity environment is enhanced.

The preparation method of the regenerated cellulose fiber provided by the embodiment of the invention comprises the following steps: S1, mixing cellulose pulp with compound enzyme and glycine, performing enzyme treatment, and performing ultrasonic treatment to obtain activated pulp; s2, mixing and swelling the activated pulp with an NMMO aqueous solution, lysine and oxidized nanocellulose, and performing vacuum dehydration dissolution, dry-jet wet spinning and gradient coagulating bath forming to obtain nascent fibers; s3, adding the nascent fiber into an aspartic acid / citric acid mixed solution, and performing UV catalytic crosslinking treatment to obtain the regenerated cellulose fiber. The cellulose supramolecular structure is precisely regulated and controlled through compound enzyme-amino acid synergistic pretreatment, the transverse binding force of the fibers is reinforced on the molecular level by combining nanocellulose enhancement and the UV catalytic in-situ crosslinking technology, the fibrillation problem of the regenerated cellulose fibers is fundamentally solved, and the regenerated cellulose fibers have the advantages of being high in mechanical strength, high in mechanical strength and the like. Meanwhile, good mechanical property, dyeing property and hydrophilic comfort are achieved.

A bag having a bag casing made of a water-permeable and / or water vapor-permeable nonwoven and a filling material arranged therein for oral application or other application with controlled release of active substances, wherein the nonwoven contains a mixture of thermoplastic binder fibers, which are thermally activated by the action of heat and pressure, and hydrophilic, preferably cellulosic, fibers, which are not thermally activated by the action of heat and pressure, said mixture being thermally consolidated under full-area action of heat and pressure, and at least two overlapping edges of the nonwoven are connected to one another by a heat-sealed seam.