1667 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.

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.

Provided is a flame retardant and latent hardener composition including a blend of 30-100% (by weight based on total solids) of diammonium hydrogen phosphate, and dihydrogen phosphate, 0-50% (by weight based on total solids) of monoammonium. The flame-retardant / hardener composition is prepared as a solid blend or a liquid composition, the liquid composition being an aqueous composition including a liquid aqueous solution of the contents ranging from 25% w / w to 80% w / w. Methods for making flame retarded fiber boards using the composition as flame retarder and a hardener for the resin used in the production of the boards are also provided.

The invention relates to regenerated cellulose fiber as well as a preparation method and application thereof. Comprising the following steps: dissolving a cellulose raw material in a solvent; adding a pore-forming agent, a dispersing agent and a cross-linking agent, mixing, and carrying out vacuum defoaming; spinning: enabling the stock solution trickles to sequentially pass through a first coagulating bath, a second coagulating bath and a third coagulating bath; the first coagulating bath is an acidic solution, so that a hollow structure is formed in the fiber; forming a nano-scale pore structure on the outer layer of the fiber in the second coagulating bath; the acid introduced by the first coagulating bath and the solvent introduced by the second coagulating bath are replaced by the third coagulating bath through solvent exchange, and meanwhile, the fibers are gelatinized to form a three-dimensional network structure; and drafting, drying, curling and winding the nascent cellulose fiber to obtain the regenerated cellulose fiber. The technical problem to be solved is how to enable the regenerated cellulose fiber to have a unique structure of internal hollow macropores and external nanoscale pores, and improve the thermal insulation performance, air permeability and hygroscopicity of the fiber. The mechanical property is excellent, the preparation method is simple, and the cost is low.

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.

A pallet outer packaging paper, to an outer packaging method using this pallet outer packaging paper as an outer packaging material, and to a method for producing such a pallet outer packaging paper. The pallet outer packaging paper comprises at least 70 wt. % cellulose fibres having a length-weighted average fibre length in accordance with ISO 16065-2:2014 of 1.8 mm to 2.8 mm, and has a bending stiffness in accordance with ISO 2493-1:2010, using a bend angle of 15° and a test bend length of 10 mm, of at most 35 mN in the machine direction and at most 30 mN in the transverse direction, and a bending stiffness index of at most 100 Nm6 / kg3 in the machine direction and at most 80 Nm6 / kg3 in the transverse direction, and a grammage of 50 g / m2.

The invention relates to an emulsion from the oxidation products of natural waxes, having improved barrier properties, to a process of producing such an emulsion, and to cellulose fiber articles or biopolymers coated with such an emulsion from the oxidation products of natural waxes. The invention further relates to the use of such an emulsion for coating substrates that contain cellulose fibers or biopolymers.

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 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 discloses an efficient flame-retardant fabric based on phytic acid esterified nano-crystalline cellulose fibers and a preparation method of the efficient flame-retardant fabric. Phytic acid esterified nano-crystalline cellulose fibers are attached to the surfaces of the fibers through chemical bonds and mutually staggered to form a stacked porous network, and a flame-retardant layer is formed. According to the flame-retardant fabric, a dispersion liquid of phytic acid esterified cellulose fibers is adopted for carrying out dipping treatment on the fabric, and phytic acid esterified cellulose fibers and fabric fibers are promoted to be subjected to a chemical reaction through baking and heating, so that covalent bonds are formed. The phytic acid esterified nano cellulose fiber is not easy to permeate into the fiber inner core, so that degradation of macromolecules in the fiber caused by phytic acid can be avoided, and the mechanical property of the fabric is effectively ensured. The method adopts bio-based raw materials, is green and environment-friendly, and conforms to the concept of sustainable development.

This disclosure relates generally to chemical engineering, and, more specifically, to an improved method and apparatus for recovering lignin from biomass, including using organic solvents, such as methanol, to explosively separate lignin from cellulosic materials, and the harvesting of all of the resulting products. Additionally, the present technology relates to improved uses for the harvested products, including composite board and resin binder systems.

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 molded packing material and a method of making the molded packing material. The molded packing material includes a plurality of molded fiber cushioning elements. The molded packing may also include a matrix comprising cellulosic fibers bonding the plurality of molded fiber cushioning elements to each other. The plurality of molded fiber cushioning elements and matrix form a mass that has been molded into a shape having exterior surfaces and an interior with some of the plurality of molded fiber cushioning elements being on the exterior surfaces of the mass and the remainder of the plurality of molded fiber cushioning elements being in the interior of the mass. The molded packing material may also include a fiber shell having a cavity formed therein with the plurality of molded fiber cushioning elements located in the cavity.

The invention discloses a preparation method and application of loofah sponge cellulose fiber aerogel, and belongs to the technical field of aerogel materials. The preparation method comprises the following steps: preparing loofah sponge cellulose fiber with a large number of cellulose microfibrils on the surface layer by taking a natural biomass material loofah sponge fiber as a raw material, and preparing the loofah sponge cellulose fiber aerogel through silane coupling agent hydrophobic modification and vacuum freeze drying. According to the preparation method, the cost can be remarkably reduced, the production process is simplified, the aerogel has high porosity and good self-cleaning performance, various organic solvents and oil pollutants in sewage can be efficiently adsorbed, the adsorption capacity is high, the speed is high, and the adsorbed oil liquid can be kept for a long time without secondary leakage. Meanwhile, the material has good mechanical properties, can be repeatedly used, is easy to degrade after being used, and has wide application prospects in the aspects of environmental governance and biomass resource waste utilization.

The preparation method comprises the following steps: blending and interweaving anion fibers and cellulosic fibers to obtain an inner-layer fabric, blending and interweaving cool fibers and cellulosic fibers to obtain an outer-layer fabric, and interweaving and blending the inner-layer fabric and the outer-layer fabric to obtain a to-be-finished fabric; sequentially carrying out plasma treatment and cool microcapsule finishing on the inner layer of the fabric to be finished; sequentially performing plasma treatment and negative ion body finishing on the outer layer of the to-be-finished fabric to obtain the cool negative ion fabric. According to the cool anion fabric prepared by adopting the method provided by the embodiment of the invention, the cool property and the anti-fatigue effect of the fabric can be effectively improved, meanwhile, the fabric has good hand feeling and air permeability, and the finished fabric shows better washability.

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.

To provide a nonwoven fabric for liquid impregnation, a nonwoven fabric for a wiper that is high in dirt collection ability.SOLUTION: A nonwoven fabric for an objective wiper is a fabric layer (a) which includes a first fabric layer, a second fabric layer, and an intermediate fabric layer situated between the first fabric layer and the second fabric layer, one of the first fabric layer and second fabric layer is a fiber layer a which has 50 mass percent or more of a hydrophilic cellulose fiber, and the intermediate fabric layer is a wet type nonwoven fabric including 50 mass percent or more of the hydrophilic cellulose fiber, and / or of a short fiber having a fiber length of 20 mm or less. Each fabric layer is integrated by cross connection of the fibers, where a MD 5% elongation stress index for which 5% elongation stress (N / 5 cm) in a MD direction under a dry condition is divided by basis weight (g / m2) of the nonwoven fabric is 0.150 or higher, and / or 5% elongation stress (N / 5 cm) in the MD direction under a humid condition divided by the basis weight (g / m2), namely MD 5% elongation stress index is 0.050 or higher.SELECTED DRAWING: None

An absorbent core for use in an absorbent articles, wherein the absorbent core extends in a transversal direction and a longitudinal direction, and comprises: a fluid-permeable top layer; a bottom layer; one or more central layers sandwiched between the top layer and the bottom layer, each central layer having a front edge, a back edge and two longitudinally extending side edges, wherein the central layer is a high loft fibrous nonwoven layer which is free of cellulose fibers; wherein the high loft fibrous nonwoven layer comprises, preferably consisting of, a carded air-through bonded nonwoven or drylaid thermobonded nonwoven; and wherein the central layer is impregnated with superabsorbent particles such that said particles are comprised through a thickness of said central layer, said thickness extending perpendicular to both the transversal direction and a longitudinal direction, and wherein the high loft fibrous nonwoven layer is substantially free of hotmelt adhesive for immobilizing said superabsorbent particles.

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.

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.

A method for producing cellulose products, comprising : - providing at least one row of discrete blanks (12) each including at least one layer of dry-formed cellulose fibers, - feeding said at least one row of discrete blanks (12) to a forming mold (14), - heating and pressing said discrete blanks (12) in the forming mold (14) to shape said discrete blanks (12) into two-dimensional or three-dimensional cellulose products (10).

In one example, a process includes providing a system with a first vessel and a second vessel; providing a biomass comprising lignin, hemicellulose and cellulose fibers into said first vessel; providing an aqueous acidic composition comprising an acid; providing a modifier component; providing a peroxide component; exposing said biomass to said sulfuric acid, modifier and peroxide components, creating a reaction mass; mixing said reaction mass; and allowing said sulfuric acid component and peroxide component to come into contact with said biomass for a period of time sufficient to a delignification reaction to occur and remove a pre-determined amount of said lignin from said biomass. The pre-determined amount may be assessed by determining a first remaining peroxide concentration in the reaction mass, with a suitable apparatus, when said first remaining peroxide concentration is reached, the biomass is transferred to said second vessel.

The invention belongs to the technical field of textile dyeing and finishing, and relates to a method for washing dyed fabric based on a micro-nano bubble technology, which comprises the following steps of: continuously injecting water containing micro-nano bubbles at the temperature of 10-80 DEG C into a washing tank or a dyeing vat in which the dyed fabric is placed by utilizing a micro-nano bubble generating device until the fabric is completely immersed in the water; the micro-nano bubbles are continuously generated to wash the dyed fabric for 30 seconds to 10 minutes, and the process of washing the fabric by using the water containing the micro-nano bubbles can be repeated according to the color fastness requirement of the washed and dyed fabric; the fabric contains any one fiber component of cellulosic fiber, wool and silk; the micro-nano bubbles are air bubbles, oxygen bubbles, hydrogen bubbles, nitrogen bubbles, helium bubbles or argon bubbles; the minimum diameter of the micro-nano bubbles is smaller than or equal to the pore diameter of micropores in fibers after the fabric is swelled. In the washing process, only micro-nano bubble water is used, a soaping agent is not used, the washing time is shortened to 30s-10min, and the color fastness of the washed fabric is improved.

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 relates to a non-irritant, lifting and tightening mask cloth as well as a preparation method and application thereof. The mask cloth comprises a cellulosic fiber surface layer, an elastic middle layer and a cellulosic fiber bottom layer which are sequentially laminated, the cellulose fiber surface layer and the cellulose fiber bottom layer are both made of fine denier viscose fibers, the fineness of the fine denier viscose fibers is 0.5 dtex-1. 0 dtex, and the length of the fine denier viscose fibers is 38-52 mm; the elastic middle layer is made of PU fibers. The PU fiber is used as the elastic middle layer, the cellulose fiber layers are used on the two sides, the middle layer has good elasticity, after the middle layer is made into the membrane cloth, good elasticity can be provided, the cellulose fiber layers can make the fiber very soft by controlling the fineness, and the prepared membrane cloth is very fine and soft in surface and can provide good skin feeling; the cellulose fiber layer is attached to the skin, so that the finally obtained mask cloth is very friendly to the skin, has no irritation, and is safer and milder.