30results about How to "Improve wet modulus" patented technology

The invention discloses a solvent method high-wet-modulus bamboo fiber and a preparation method thereof. The preparation method of the bamboo fiber comprises the following steps: activation, adding bamboo pulp into deionized water, adjusting the pH value, adding cellulase for activation, and then adding alkali to adjust the pH value; squeezing, vacuum dewatering and squeezing; pre-dissolving, adding water solution containing 50-88% of N-methyl morpholine-N-oxide; dissolving, entering a dissolving machine, heating, vacuumizing, dehydrating, dissolving, homogenizing and defoaming; spinning, spraying through a spinneret plate, and molding by adopting a dry wet spinning; washing; whitening; oiling; and drying. The preparation method has simple operation, no industrial pollution, low energy consumption and high safety performance, and is applicable to manufacturing the solvent method bamboo fiber by large-scale industrialized continuous production; furthermore, the bamboo fiber prepared by the method not only maintains the natural physical and chemical properties of the bamboo fiber, but also generates no harmful chemical residue and has higher wet modulus.

The invention relates to a preparation method of a dimensionality-stable regenerated cellulose fiber. The preparation method comprises the following steps: carrying out dipping, squeezing, crushing, ageing, yellowing, continuous dissolving, filtering, and deaeration operations on a cellulose raw material to prepare a spinning viscose glue; and spinning to prepare the dimensionality-stable regenerated cellulose fiber, wherein a mixture comprising one or more of a denaturant and a crosslinking agent is added in the continuous dissolving step of the spinning viscose glue operation or before the spinning step. The dimensionality, the dry strength, the wet strength and the dry extension of the dimensionality-stable regenerated cellulose fiber are 1.4-1.72dtex, 1.6-3.0CN / dtex, 1.2-2.8CN / dtex and 10-20% respectively. The dimensionality-stable regenerated cellulose fiber prepared by adopting the method of the invention overcomes disadvantages of low fabric preparation rate and bad dimensional stability caused by the overhigh hygroscopic expansion rate and large wet tensile elongation of common viscose fibers, and has the advantages of stable transverse section and vertical dimensionality, and strong weaving strength.

A method for producing regenerated cellulose fibers with high wet modulus from bamboo pulp, comprising a rubber-making process and a spinning process, using bamboo pulp with a methyl fiber content ≥ 90% and a polymerization degree of 400-500DP as raw materials, and making the bamboo pulp The meal is impregnated with alkali, and Berol produced by AkzoNobel, Sweden is added in the alkali impregnation process. Visco? 388, the addition amount is 0.1-0.2% of the weight of the first fiber in the bamboo pulp to obtain the alkali cellulose; the alkali cellulose is crushed, pressed, aged, yellowed, dissolved, filtered, defoamed, matured, and made into a spinning The raw silk solution is used for spinning; the raw spinning solution reacts with the spinning bath to obtain primary filaments, and the primary filaments undergo negative drafting, cutting, post-processing, and drying processes to obtain finished fibers. The invention realizes the production of high wet modulus regenerated cellulose fiber from pulp with low polymerization degree and low methyl cellulose. The dry and wet strength and wet modulus of the regenerated cellulose fiber are greatly improved, meeting the definition requirements of the modal fiber in the BISFA standard.

The invention discloses a preparation method of cellulose viscose and its application in cellulose casing, belonging to the technical field of viscose fibers. The preparation method of cellulose viscose includes preparing a viscose solution, modifying the viscose solution , spinning and post-processing; the application of the cellulose viscose in the cellulose casing includes weaving, shaping, primary drying, washing and setting, and secondary drying; the present invention can improve the toughness and antistatic properties of the cellulose casing. While improving the spinnability, the water vapor transmission rate, wet modulus, dimensional stability, elasticity, abrasion resistance and acid and alkali resistance of cellulose casing are improved.

The invention discloses a production method of high wet modulus bamboo pulp viscose glue fiber, which adopts the steps of dipping, squeezing, smashing, maturing, sulfonating, spinning, drawing, refining, drying and the like to prepare high wet modulus bamboo pulp viscose glue fiber. The high wet modulus bamboo pulp viscose glue fiber prepared with the method of the invention has dry breaking strength of 3.2-3.8 CN / dtex, wet breaking strength of 2.0-2.4 CN / dtex and wet modulus of 0.60-0.65 CN / dtex, has the characteristics of high humidity modulus, better purity, favourable affinity for dyestuff, non-fibrillation, non-fibrillar structure and the like, reduces expansion, reduces water retention capacity and improves alkali stability. Prepared fabric has silky luster and draping property, is extremely soft, has excellent dyeability and vivid luster and can keep bright and colorful after being cleaned several times.

The invention relates to the technical field of regenerated cellulose fibers, in particular to a composition and application thereof to preparation of regenerated cellulose fibers with an antibacterial anti-acarien and moldproof function. The composition provided by the invention consists of radix stemonae extract, rhizoma coptidis extract and essential oil of fruit of cubeb litsea tree. The regenerated cellulose fibers comprising the composition can resist bacteria, mites and mold, and also have good mechanical performance, and a textile prepared by using the fibers has good quality.

The invention provides a long-acting broad-spectrum antibacterial sky tea fiber, which belongs to the field of cellulose fibers. The fiber is composed of an inner layer and an outer layer; the inner layer is distributed with micro-cavities and carbon nanotubes; the inner layer accounts for 65-75% of the total dry weight of the fiber; the outer layer accounts for the total fiber weight. 25‑35% of weight. The present invention also provides a preparation method of long-acting broad-spectrum antibacterial tiancha fiber. The method includes the preparation step of viscose spinning solution; the preparation step of the viscose spinning solution includes adding a modification aid in the dissolving process. A kind of long-acting broad-spectrum antibacterial sky tea fiber prepared by the present invention, the inner layer adopts the traditional sulfonate method glue making process, adopts the coagulation bath process formed by the skinless core layer, and the outer layer adopts the creative solvent method to homogenize the fiber. After coating and coagulation regeneration, the prepared fibers have high strength, good antibacterial durability, high wet modulus, and especially the dry breaking strength exceeds that of ordinary viscose fibers.

The invention provides a preparation method for a viscose containing wormwood extract. The preparation method comprises the following steps: preparing an antibacterial agent solution, adding a dispersing agent, adding sodium carboxymethylcellulose, blending with a spinning solution, spinning, and post-treating. The prepared viscose has the advantages that the dyeing effect is good, the antibacterial ability is high, the inhibition ratio to staphylococcus aureus is 99.1-99.3%, the inhibition ratio to escherichia coli is 98.9-99.3%, and the inhibition ratio to candida albicans is 93.6-95.7%. The prepared viscose has high strength and wet modulus; the dry strength is 6.21-6.34cN / dtex, the wet strength is 4.71-4.94cN / dtex, the elongation at break is 23.4-25.5%, and the wet modulus is 0.63-0.65cN / dtex.

The invention discloses a high wet modulus viscose fiber and a preparation method thereof. The dry breaking strength of the high wet modulus viscose fiber is 2.4 to 3.5 cN / dtex, the wet breaking strength is 1.3 to 2.1 cN / dtex, and the dry breaking strength is 1.3 to 2.1 cN / dtex. The elongation is 9-15%, and the wet modulus is 0.7-1.0cN / dtex. The as-spun fiber tow goes through the following processing steps in sequence: (1) enters the plasticizing bath for moist heat drawing; (2) enters the desulfurization bath for desulfurization after dehydration; (3) enters the bleaching bath for bleaching after dehydration; (4) After dehydration, go through multiple water washing processes, and carry out wet end drafting while washing; (5) enter the oiling bath for oiling after dehydration; (6) carry out hot roller drying after dehydration, and carry out dry drawing at the same time; The high wet modulus viscose fiber is obtained after hot roll drying. In the invention, the viscose fiber with high wet modulus and stable size in wet state is obtained only by adjusting the post-treatment process, and the process is highly controllable.

The invention discloses a multifunctional compound cellulose fiber and a preparation method thereof. By adoption of an advanced microcapsule preparation technique and modification of a cellulose fiber solution preparation process, a cellulose fiber is modified through polyvinyl alcohol, herba centellae, proteins and vitamins to obtain the multifunctional compound cellulose fiber by means of a cellulose fiber wet spinning process. The multifunctional compound cellulose fiber prepared according to the method is capable of meeting people's demands on moisture absorption, bacteria resistance, skin caring and the like of fibers, and a product is excellent in physical and mechanical performance and stable functionally and has a promising development prospect.

A method for spinning blended yarns with Outlast air-conditioning fibers / Newdal fibers is characterized by configuring the ingredients Outlast air-conditioning fibers / Newdal fibers according to the weight ratio of 95-85:5-15; opening the Outlast air-conditioning fibers and the Newdal fibers respectively and spraying antistatic agents; processing the Outlast air-conditioning fibers in a plucker, ablender, a card wire opener, a double-hopper feeder, a lap machine, a carding machine and a pre-drawing machine, and processing the Newdal fibers in the plucker, the blender and opener, a multi-bin blender, a sawblade beater type opener, the double-hopper feeder, the lap machine, the carding machine, the pre-drawing machine, a silver lap machine and a comber; and finally feeding the processed Outlast air-conditioning fibers and Newdal fibers into a drawing machine, a roving frame, a spinning frame and a bobbin winder. The method retains the temperature regulation characteristic of the Outlast air-conditioning fibers and higher strength and wet modulus, excellent breaking elongation and unique high crimp property of the Newdal fibers and ensures the products to have better spinning processibility.

The invention discloses a solvent method high wet modulus protein fiber and a preparation method thereof, belonging to the field of textiles. The method comprises the steps of: (A) activation, the pulp is activated by cellulase to obtain pulp; (B) pressing, the pulp is pressed and dehydrated to obtain water-containing cellulose; (C) predissolving, water-containing cellulose and N-methyl cellulose are obtained The morpholine-N-oxide aqueous solution and the protein mixed solution are mixed to obtain a pre-dissolved pulp; (D) dissolving, and the pre-dissolved pulp is dissolved in a dissolving machine to obtain a slurry; (E) spinning, the slurry is used for spinning to obtain a solvent-based high Wet modulus protein fibers. The method has simple operation, no industrial pollution production, low energy consumption and high safety performance, and is suitable for large-scale industrialized continuous production. The obtained solvent-method high wet modulus protein fiber has a high wet modulus, contains protein components, and has good moisture absorption and perspiration, good air permeability, comfortable wearing, soft hand feeling, is conducive to continuous dyeing, easy printing and dyeing, and is conducive to the production of high-end fabrics .

The invention provides a multifunctional carbon nanotube plant source fiber, which belongs to the field of cellulose fiber. The fiber is composed of two parts, an inner layer and an outer layer; the inner layer is distributed with microcavities and carbon nanotubes; the inner layer accounts for 65-75% of the total dry weight of the fiber; the outer layer accounts for the total weight of the fiber 25-35% of the weight, the electrical conductivity of the multifunctional carbon nanotube plant source fiber is ≥2.4×10 4 S / m. The present invention also provides a method for preparing multifunctional carbon nanotube plant-derived fibers. The method includes the preparation step of viscose spinning liquid; the preparation step of viscose spinning liquid includes adding modification auxiliary agent slurry; a kind of multifunctional carbon nanotube plant source fiber prepared by the present invention, the inner layer adopts the traditional sulfonate method glue making process, adopts the coagulation bath process formed by the skinless core layer, and the outer layer adopts the creative solvent method. Coating and solidification regeneration, the prepared fiber has higher strength, better conductivity, better antibacterial persistence, higher wet modulus, especially dry breaking strength than ordinary viscose fiber.