4142 results about "Viscose fiber" patented technology

The invention relates to a method for preparing xylose by using squeezed waste alkali in the viscose fiber production process. According to the method, xylose finished products are obtained through work procedures of hemicellulose solution preparation, hemicellulose extraction, hemicellulose hydrolysis, neutralization and deacidification, preconcentration, decoloration, ion exchange, ordinary concentration, crystallization, separation and drying. When the technical scheme provided by the invention is adopted, harmful environment-pollution substances such as waste alkali and waste water generated in the viscose production process can be thoroughly eliminated, the standard of full-flow-process clean production can be reached, viscose production enterprises can also produce xylose in the viscose production process, the goal of environment protection is reached, and meanwhile, the waste reutilization is also realized.

The production process of bamboo fibre viscose pulp includes the following main steps: pre-alkalizing, secondary cooking, plate (belt) type washing and bleaching, and is characterized by mixing insoluble bamboo pulp undergo the process of modification treatment to produce soluble viscose bamboo pulp. As compared with cotton pulp production process it can reduce discharge of waste water by 35%, and is approaching to or superior to cotton pulp in quality.

Said invention discloses a bamboo charcoal viscose fiber and producing method. The bamboo charcoal is finely selected, coarse cracked, dust removed, trash extracted, and pulverized to less than 0.5 micrometer, the bamboo charcoal micropowder and dispersant are put in water to made into aqueous emulsion slurry, filtered four times by two-layer of poplin filter fabric, respectively spinning in filament spinning machine and shorts spinning machine to obtain said bamboo charcoal viscose fiber which has bacteriostasis and antibiotic effect.

A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state; a plurality of proppant particles disposed in the superabsorbent polymer; an additive comprising a surfactant, a viscose polymer, or a combination thereof, and a fluid to expand the superabsorbent polymer into the expanded state. A process for disposing a plurality of proppant particles in a fracture comprises: disposing a hydraulic fracturing composition in a downhole environment; forming a fracture; disposing the hydraulic fracturing composition in the fracture; breaking the superabsorbent polymer after forming the fracture; and releasing the plurality of proppant particles from superabsorbent polymer. The process also comprises injecting a proppant-free fluid and a proppant-containing fluid in an alternating order into a subterranean formation.

The invention provides a viscose fiber with mint antibacterial function and a preparation method thereof. The viscose fiber is characterized in that a natural mint extractive is used as an antibacterial agent agent, superfine powder grains or solution of the natural mint extractive are added to viscose spinning solution, and the superfine powder grains are molded to obtain the viscose fiber with the mint antibacterial function according to the traditional wet spinning and spraying technology, wherein the additive quantity (or the additive quantity of the superfine powder grains of the natural mint extractive in the solution) of the superfine powder grains of the natural mint extractive is 1 percent to 10 percent of the weight of the viscose spinning solution. The viscose fiber adopts the natural mint extractive as the antibacterial agent which is evenly distributed in the fiber, and the antibacterial agent has persistent antibacterial function and dyeing effect and does not have side effects on human body. The viscose fiber with the mint antibacterial function is suitable for preparing underdress, other clothes and bed textiles and has wide application range and large economic and social benefit. The preparation method has reasonable and simple process and is suitable for industrialization production.

A preparation method of fire resistant phase transition thermal insulation layered fabric for firefighter clothing comprises the following steps of: immersing nonwoven felt prepared by combining 50-90% of aramid fiber 1313 fiber, 5-20% of carbon fiber and 0-30% of fire resistant viscose fiber into a prepared fire resistant phase transition microcapsule operating fluid, and carrying out two dipping and padding technology to obtain the fire resistant and temperature regulated phase transition thermal insulation layered fabric for firefighter clothing. A prepared phase transition finishing liquid contains 5-10% of an adhesive, 5-10% of a cross-linking fire retardant, 1-5% of a thickening agent and 1-5% of a fabric softener. The thermal insulation layered fabric which has undergone phase transition finishing is used to obviously raise thermal protective performance of firefighter clothing. The prepared fibrofelt fabric is applied in fire extinguishment and is also widely applied for individual protection equipment in different industries and fields such as metallurgy, petroleum, steel chemical industry, army war clothing and the like.

The invention relates to element-negative-ion-releasing sterilizing mite-preventing electromagnetic-wave-preventing fire-retarding nano-grade fabric used in vehicles. The invention belongs to the technical field of textile fiber fabric production of vehicle-use nano-grade decorative fabric with functions of refreshing and air-purifying. The fabric is a nano-grade functional healthy textile. The nano-grade fabric provided by the invention is produced form chitosan, which is a natural high polymer extracted from shells of shellfishes, crabs and shrimps; a natural antibiotic humectant SCJ-920; a high-efficiency mite-preventing antibacterial agent SCJ-998; nano-grade negative-ion powder SCJ-900; negative-ion far infrared healthcare slurry 700; a fire retarding finishing agent ATF; an aromatic finishing agent SCM; electromagnetic-wave-preventing ferrites Fe2O3, Fe3O4, and Fe; substances such as TiO2, Al2O3, and ZnO used for providing far infrared radiation; an Ag-embedded nano-TiO2 (AT) antibacterial agent; nano-grade selenium or organic selenium which is rare on earth; organic germanium, Chinese herbal medicines, essential oil, maifanite, tourmaline nano-grade powder and other materials. A mixture of the materials is added to cotton, linen, wool, silk, polyamide fiber, acrylic fiber, terylene or viscose fiber spinning liquid, and the nano-grade fabric is produced through weaving.

The present invention provides one kind of viscose fiber with antibacterial and antifouling tea component, and the viscose fiber contains antiseptic comprising at least one of natural tea pigment, tea polyphenol and catechin. The powder or solution of at least one of natural tea pigment, tea polyphenol and catechin in the amount of 1-10 wt% is added into viscose spinning fluid to result in lasting antibacterial and antifouling functions. The viscose fiber has also the fragrance of tea, dyeing effect and no side effect on human body, and is suitable for use in making underwear, other costumes and bedding.

The invention relates to a process for secondary treating of a waste alkali liquid during production of viscose fibers and belongs to the field of viscose fibers. According to the process, the conventionally-pretreated waste alkali liquid with the sodium hydroxide concentration of 70-90g/L and the hemicellulose content of 60-70g/L and demineralized water are transferred into a diffusion dialyzing membrane stack respectively for diffusion dialyzing, the flow ratio of the waste alkali liquid to the demineralized water is (1-2):1, the alkali liquid with the low hemicellulose concentration is separated from the alkali liquid with the high hemicellulose concentration after diffusion dialyzing, and the alkali liquid with the low hemicellulose concentration is used for production. The process solves the problem that the environment is greatly damaged due to direct discharge of the waste alkali liquid which is recycled once and can still produce the secondary waste alkali liquid in the prior art, the process for treating the secondary waste alkali liquid is provided, sodium hydroxide (NaOH) in the waste alkali liquid can be recovered to the maximum extent, the environmental pollution is reduced, the ecological benefit is improved, and simultaneously, the cost for environmental protection treatment is reduced.

The invention provides viscose containing natural antimicrobials. The viscose containing the natural antimicrobials comprises the viscose and the antimicrobials contained in the viscose. The viscose containing the natural antimicrobials is characterized in that the antimicrobials is natural indigowoad leaf extract powder, a natural indigowoad leaf extract powder solution added with dispersing agent is added into a viscose filature stock solution, the additive amount of the natural indigowoad leaf extract powder is 1%-7% of the quality of the viscose filature stock solution, the additive amount of the dispersing agent in the natural indigowoad leaf extract powder solution is 0.1%-1.0% of the quality of water in the natural indigowoad leaf extract powder solution. The preparation method of the viscose comprises the steps of dissolving the indigowoad leaf extract powder into water and adding the dispersing agent to obtain the indigowoad leaf extract powder solution, adding the indigowoad leaf extract powder solution to the viscose filature stock solution according to a ratio of 10%-14% of the quality of the viscose filature stock solution, and then shaping a obtained solution according to conventional wet spinning jet process to obtain the viscose. The viscose has a durable antibacterial function and has no side effect on human bodies. The preparation method has reasonable and simple technology, and is suitable for industrialized production.

A bamboo-carbon viscose fiber and its production are disclosed. It consists of bamboo pulp dregs and nano-bamboo carbon 4-30wt%, the grain size is 75-150nm, final-product fiber strength is 1.7-3.0cN/dtex, extensibility is 9-18%. It adopts viscose coagulation bath composite modifying technology, it has excellent antibacterial, far-infrared health care and deodorization functions. It has better fiber strength and spinning handling property. It's cool, refined and no environmental pollution and can be used for summer clothing production and non-woven industries.

The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SO₂ in specified conditions, followed by chromatographic fractionation, nanofiltration or precipitation crystallization of the xylose-containing prehydrolyzate to obtain a xylose product having a xylose content of at least 55% on DS. The dissolving pulp obtained from the process can be used for example for the production of viscose.

The invention provides a comfortable wrinkle-resistant fabric, which is prepared by weaving high-twist wrap yarns, wherein the high-twist wrap yarns are wrapped by leather yarns and core yarns; the core yarns are comfortable short fibers; the leather yarns are chemical fiber filaments; the weight ratio of the chemical fiber filaments to the comfortable short fibers is 10-80:20-90; the leather yarns are wrapped on the core yarns in spiral wrapping mode; the degree of twist of the chemical fiber filaments and the comfortable short fibers in the Z-direction or S-direction is 1 to 25T/cm; the chemical fiber filaments are made of terylene, chinlon, polypropylene, PTT, silk, or terylene FDY; and the comfortable short fibers are one or more fibers in pure cotton, viscose, fur, flax, bamboo fiber, corn fiber, soybean fiber and milk fiber. The comfortable wrinkle-resistant fabric has the advantages of high wrinkle resistance, moisture absorption, wear resistance, pilling resistance, sense of flax, air permeability and machine-wash property, comfortable wear, high strength and quick drying of absorbed moisture, and is an ideal comfortable wrinkle-resistant shell fabric.

The invention provides a base material for a phase-transforming energy-storing low-temperature facial mask, which includes nonwoven fabrics, phase-transforming energy-storing micro-capsule, small balls or powders or the mixture thereof are compounded on the surface of the nonwoven fabrics or into the fiber of the nonwoven fabrics, and the weight of these energy-storing substances account for 20-60% of the total weight of the base material of the facial mask. The base material is prepared by the following steps: adding the produced energy-storing balls, powder, micro-capsule or the mixture thereof into a viscose fiber solution to prepare the fiber, and then producing the fabrics by using the fiber; or producing the energy-storing substances into paste materials and coating the paste materials on the surface of the nonwoven cloth to form a coating layer and then produce the low-temperature base material of the facial mask. The invention compounds the low-temperature phase-transforming energy-storing material into the traditional base material of the facial mask, and the traditional nonwoven fabric for the facial mask can be replaced. Experiments indicate that the low-temperature facial mask prepared by the low-temperature base material has longer holding time by 20-60% compared with the traditional product at the low temperature; furthermore, the way of shrinking the pores by low temperature is innocuous and harmless to the skin, therefore, the product has bright market prospect.

The invention discloses an flame retardant non-woven cotton fabric, comprising anti-fcell flame retardant fiber and washing/washing composite hot melting short fiber, wherein, the weight percentage of the anti-fcell flame retardant fiber is between 70 and 90 percent, the balance is the washing/washing composite hot melting short fiber; the two fibers are stuck into an integrated whole by the hot wind heating and/or are penetrated together by prickling fibers to combine into the non-woven fabric. The method for producing the non-woven cotton fabric comprises the processes of mixing, opening, carding, mesh placing, moulding processing, etc. The moulding processing method has the needle point method and the through-air method. The flame retardant non-woven cotton fabric adopts the prescription of mainly taking the anti-fcell flame retardant fiber and solves the problems of the flammability of the terylene, dropping of the fusion and the flammability of the viscose. The washing/washing composite hot melting short fiber is added to increase the caking coefficient so that the fibers are conglutinated evenly. The unique processing flow ensures that the inflaming retarding non-woven cotton fabric has high tension intensity and anti-breakage intensity as well as certain elasticity and bulkiness.

The invention discloses a heat-preservation hard composite carbon fiber felt and a preparation method thereof. The preparation method comprises the following steps: forming a carbon fiber vacuum filtration layer, compositing a viscose-based carbon fiber felt or polyacrylonitrile-based carbon fiber felt, soaking a binding agent, needling, coating an upper surface processing layer, forming and postprocessing. The heat-preservation hard composite carbon fiber felt and the preparation method thereof provided by the invention have the advantages that the cost performance optimization design is carried out on a product according to a specific operating environment, the designability of the density of the whole felt is high, the density of an organic padding is relatively low, a high density fiber stacking structure which is corresponding to a high temperature surface is effectively formed, a heat insulation effect is excellent, a low density fiber stacking structure which is corresponding to a low temperature surface is effectively formed, and the cost is economic.

The invention discloses a high-humidity modulus viscose fiber with dry strength of 3.5-6.0cN/dtex, wet elastic modulus of 0.35-0.60cN/dtex and wet strength of 2.0-4.5cN/dtex, and prepared of cellulose pulp with degree of polymerization of 500-1200 and alpha-cellulose content >=95% by the steps of dip-basifying, squeezing, ageing, yellowing, dissolving, wet spinning moulding, drafting, etc. And it has features of higher intensity and wet modulus, better loop strength performance, and lower brittleness; and the fabrics made by it has features of high intensity, multiple deformation resistance, alkali resistance, etc.

The present invention discloses a method for preparing hemp viscose fiber by using hemp plant and hemp visose fiber prepared by adopting said method. Said method includes the following steps: preparing raw material, digesting, washing material, pulping, removing sand, bleaching, water-washing, fiber-making, impregnating, pressing, pulverizing, aging, xanthating, dissolving, mixing, filtering, defoaming, spinning, drawing, cutting and making after-treatment.

The invention relates to a production method for preparing a dissolving pulp by an oxygen-dissolving and continuous-cooking method, which applies the preparation of cotton linters in the production of viscose fibers in the textile industry, and the method comprises the following steps of: I. cotton linter pretreatments: including cotton linter loosening, cyclone separation and dust removal, feeding, two-roll grinding treatment, etc. to the cotton linters by a two-roll pulping machine; and II. oxygen dissolving and continuous cooking: a horizontal continuous cooking digester is adopted to realize the continuous, fast and low-pollution preparation of dissolving cotton pulp through the actions of high temperature, alkali, oxygen or hydrogen peroxide. The horizontal continuous cooking digester includes a pre-reaction bin, a two-roll gauge, a feeding screw, a T-shaped tube, a continuous-cooking tube and a cold discharge device. The method can effectively solve the problems of: cutting, tearing and cell primary wall breakage to the cotton linters by dry method after feed preparation, physical and chemical stripping to mass impurities in the cotton linters, fast accumulation reduction of the cotton linters in a continuous-cooking device and the purification of alpha cellulose under fast accumulation reduction, recycling of waste heat in the production link, and reduction of total amount of COD in a black liquor, and the method has advantages of even cooking and short cooking cycle.

The present invention provides peppermint composite cellulose fibers, which contain 1-12 wt% of a peppermint extract component and 0.5-3 wt% of peppermint odor essential oil slow-release microcapsules, wherein the dry breaking strength of the fibers is 1.0-3.0 cN/dtex, the wet breaking strength of the fibers is 0.8-1.6 cN/dtex, the dry elongation at break is 16-24%, the residual sulfur content is less than or equal to 18 mg/100 g, the antibacterial activity logarithm value is more than 2.0, and the bactericidal activity logarithm value is more than 0. The peppermint composite cellulose fiber preparation method comprises: peppermint extract adding liquid preparation, degenerated viscose glue preparing, peppermint blending viscose glue preparing, spinning and post-treating, and filament drafting and post-treating so as to obtain the peppermint composite cellulose fibers. The peppermint composite cellulose fibers of the present invention have characteristics of good wearability, textile processability, antibacterial function, bacterial inhibition function, lasting and fresh peppermint aroma, lasting odor, good textile processing performance, and significant antibacterial function.

The invention relates to antibacterial viscose containing an artemisia argyi oil component and a production method of the antibacterial viscose. The antibacterial viscose takes an artemisia argyi oil microcapsule as an antibacterial agent and a spinning solution is composed of the artemisia argyi oil microcapsule and mucilage glue, wherein the adding ratio of the artemisia argyi oil microcapsule is 10%-30% of alpha cellulose in the mucilage glue and the antibacterial property index are as follows: the antibacterial value is more than 4.0 and the sterilization value is 2.7. The production method of the antibacterial viscose containing the artemisia argyi oil component comprises the following steps: preparing artemisia argyi emulsion, preparing the artemisia argyi oil microcapsule, preparing the mucilage glue, preparing the spinning solution, and spinning and molding. The antibacterial viscose not only has the advantages of maintaining water absorption and air permeability of common viscose and being comfort to wear, but also has high antibacterial rate and good endurance; meanwhile, the antibacterial viscose has a good skin-caring effect and can be widely applied to home textile articles, underwear, sports shirts and the like.

The invention discloses a method for manufacturing modal fiber, which comprises basification reaction, ageing reaction, yellowing reaction, dissolution of viscose glue, filter of the viscose glue, defoaming of the viscose glue, ripening of the viscose glue, wet spinning, drawing and other related process steps. The method adopts cellulose pulp with alpha cellulose content of less than 95 percent as a raw material, uses common equipment for producing common viscose glue short fiber, and adopts the technology to control a simple and practical special process formulation and a spinning drawing mode to manufacture the modal fiber capable of reaching international standards. The method has the advantages of little investment, easily obtained and low-cost raw materials, high productivity and simple process operation; and the manufactured modal fiber has good quality and stable performance.

The present invention discloses preparation process of antiseptic viscose fiber. The antiseptic viscose fiber is prepared through adding nanometer silver particle of size smaller than 100 nm as antiseptic in the form of nanometer colloid aqua into spinning liquid and subsequent conventional wet spinning process. It has lasting antiseptic effect and no side toxic effect on human body, as well as excellent mechanical performance. It may be used widely in industry, agriculture, medicine and other fields.

The invention discloses a method for comprehensively treating wastewater and waste gas in the viscose fiber production as well as a device thereof, aiming at solving the difficult problem of waste gas and wastewater treatment in the viscose fiber production. The method comprises the steps of: putting the waste lye collected in the viscose fiber production into an absorption tank; inputting the process waste gas containing sulfureted hydrogen and carbon bisulfide into the absorption tank, and colleting the absorbed neutralizer for standby; and putting the neutralizer into the wastewater containing zinc ions for having the reaction with the zinc ions, and removing the precipitate after reaction products are deposited. The device comprises the absorption tank, a collecting tank, a neutralization pond and a sedimentation tank. The method and device comprehensively consider the problems of spent soda, waste gas and zinc-containing wastewater treatment in the viscose fiber production, thereby reaching the comprehensive utilization of resources, also reducing the waste discharge, and solving the environmental protection problem that restricts the industry development over a long period of time in the viscose production process.