455results about "Cellulose/protein filament chemical after-treatment" patented technology

The invention relates to a graphene blend regenerated cellulose fiber. The graphene blend regenerated cellulose fiber is prepared by mixing an oxidized graphene solution and a regenerated cellulose solution, molding a mixture through a viscose wet spinning process and reducing the mixture; the dry breaking strength of the graphene blend regenerated cellulose fiber is not less than 1.8 cN/dtex, the wet breaking strength of the graphene blend regenerated cellulose fiber is not less than 0.9 cN/dtex, the dry breaking elongation of the graphene blend regenerated cellulose fiber is not less than 16%, the mass specific resistance of the fiber is 1-9X106 omega.g/cm2, and the thermal decomposition temperature of the fiber is not lower than 400 DEG C; and with the regenerated cellulose fiber as a matrix, the prepared graphene blend regenerated cellulose fiber has the advantages of good moisture absorption, good air permeability, soft handle and good dyeing performance and has the characteristics of ultrahigh strength, thermal conductivity, electric conductivity, antibacterial property and the like of the graphene; the conductive and thermal properties of the fiber are both improved by being compared with those of the traditional regenerated cellulose fiber; the antibacterial property of the fiber is additionally provided; and the graphene blend regenerated cellulose fiber provided by the invention has the advantages of simple production process, easiness in operation, and higher yield. People estimate that the developed graphene blend regenerated cellulose fiber can be widely applied to the field of costumes, industrial textiles and the like.

Cellulose containing dope is extruded through orifices and into a stream of gas moving in a direction generally parallel to the direction that the filaments are formed with varying degrees of mechanical attenuation provided to the filaments using a take-up device, such as a winder.

The invention discloses a cellulose fiber-supported nano silver antibacterial material and a preparation method thereof. The preparation method comprises the steps of: conducting chemical pretreatment on cellulose fibers, then conducting TEMPO (2, 2, 6, 6-tetramethylpiperidine-1-oxyl) selective oxidization on the cellulose fibers, and finally on the premise that not any reducing agent is added, enabling the oxidized cellulose fibers to react with silver nitrate in silver nitrate water solution through a short-time microwave heating method to prepare the cellulose fiber-supported nano silver antibacterial material with small-diameter and even-structure nano silver particles. By adopting the preparation method, on the premise that not any reducing agent is added, in-situ reduction and growth of nano silver on carboxylated cellulose fiber supporters are realized. The prepared cellulose fiber-supported nano silver antibacterial material has the advantages of small nano grain size and even size, and can be widely applied to the fields of antibacterial operation clothes, wound dressing, drug controlled release, textile coating and the like.

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.

The invention discloses a mesoporous silicon oxide particle/degradable polymer nano composite fiber, a preparation method and application thereof. The method comprises the following steps of: uniformly dispersing mesoporous silicon oxide particles into a solution of degradable polymers; and then preparing nano composite fibers by adopting an electrostatic spinning process, wherein the mesoporous silicon oxide particles are uniformly distributed in the degradable polymer fibers. Compared with traditional polymer fibers, the nano composite fiber can be used for better controlling the release ofdrugs and has quicker biodegradability and higher mechanical strength, and meanwhile, the fiber has better cellular compatibility. The nano composite fiber can be used as a tissue engineering support, a drug release vector, a wound coating material or a functional membrane.

The invention discloses an environment-friendly type fire retardant as well as a preparation method and an application thereof. The fire retardant adopts a preparation method for an environment-friendly type fire retardant matched product, which takes organic silicon hydrolyzing dispersion liquid as a main component of the fire retardant and takes a fixed cross-linking agent as a post-treatment component. The other aim of the invention is to develop the application of the environment-friendly type fire retardant in spinning and post-treat of inflaming retarding viscoses and inflaming retarding synthetic fibers. Raw materials for preparing the environment-friendly type fire retardant are wide in source and low in price; the adverse effects on the environment and the safety, caused by traditional halogen-based and phosphorus based flame retardants, are overcome; the social benefits and the economic benefits are very great.

The invention provides a production process of wool protein compound viscose fiber, which belongs to the technical field of viscose fiber. The process comprises the steps of preparing a wool protein spinning solution, blending the wool protein spinning solution with a viscose spinning solution, spinning, solidifying and curing and performing aftertreatment to obtain the wool protein compound viscose fiber. In the invention, the addition of toxic substances is avoided, the obtained finished product is more suitable for manufacturing the textile products with high safety, such as intimate apparels and the like, and shows the advantages in environmental friendliness.

The invention discloses a feather protein fiber and a method for preparing the same. The feather protein fiber comprises the following components: 5-40 parts by weight of feather protein and 60-95 parts by weight of chemical fiber. The method for preparing the feather protein fiber comprises the following steps: A, feather protein spinning solution preparing: dissolving feather in an alkaline aqueous solution comprising sodium silicate and potassium silicate with the total mass concentration of 20-35%, and filtering to obtain the feather protein spinning solution, wherein the mass ratio of the sodium silicate to the potassium silicate is 1:(0.5-1); B, blending the feather protein spinning solution and the chemical fiber spinning solution, and spinning; and C, subjecting the feather protein fiber trickle to coagulation-bath treatment, pickling, washing and drying to obtain the feather protein fiber. The method for preparing the feather protein fiber can effectively ensure that the feather protein and the chemical fiber are fully and uniformly blended to achieve the purpose of spinning.

Disclosed is an alignment layer rubbing apparatus including a table for seating a glass substrate and a rubbing roller movably positioned on top of the table so as to rub an alignment layer of the glass substrate seated on the table. The table and the rubbing roller are tilted at a predetermined angle, and the rubbing roller is adapted to move at an angle of 0° on the table. Therefore, the damage inflicted on the alignment layer due to poor aligning of rubbing fabric attached to the rubbing roller or due to the existence of an alien substance on a surface of the rubbing roller is not concentrated, but rather spans across a region. This reduces the occurrence of rubbing stains and the visibility of damaged parts.

The invention belongs to the material field, and provides a method for preparing a regenerated cellulose fiber by double solidification bath. The method comprises the following steps: precooling cellulose to a temperature of between 8 DEG C below zero and 12 DEG C below zero in a mixed solution which contains the following compositions in weight percentage: 7 to 10 percent of sodium hydroxide, 4.5 to 7 percent of thiourea, 1 to 10 percent of urea, and 73 to 87.5 percent of water to prepare a cellulose solution with concentration of between 2 and 12 percent through filtering and defoaming; spinning the cellulose solution through a spinning machine, and presolidifying and predrafting the cellulose solution in a first solidifying bath; sufficiently solidifying, regenerating, drafting and orientating the cellulose in a second solidifying bath; washing and drying cellulose; and finally, oiling the fiber through a prepared composite oil solution, and winding the fiber to obtain the regenerated cellulose fiber with excellent mechanical performance.

The invention relates to a viscose fiber produced by utilizing mint and the process engineering thereof. The process includes: mint preparing, cropping, screening, washing, pre-treating, boiling, desanding and concentrating, chloridizing, alkali refining, bleaching, acid treating, desanding and concentrating, papermaking, dipping, pressing, crushing, maturing, yellowing, rubbing, dissolving, filtrating, debubbling, filtrating, spinning, drafting, severing, post-treating, drying, and packing; in the production process, a relaxative pulp technology is adopted, a preservative agent is added, and an enzyme treatment working procedure is added. The invention utilizes mint as the raw material to produce the viscose fiber, which is a creation of applying mint in the textile industry; and the original special matter of the mint, menthol and menthone, are kept, as well as the characteristics of sterilization, balminess, coolness, environmental protection, mosquito repelling, and so on; so that the fiber products thereof have the natural refreshing healthcare function and create a novel field for the development of the viscose fiber and the functional products thereof.

The invention relates to a production technology of viscose extinction monofilament. The production technology takes cellulosic fiber pulp as a raw material and obtains viscose extinction monofilament through preparation of a spinning solution, injection before spinning, spinning and aftertreatment, and specifically comprises the following steps of: (A) preparing the spinning solution from the cellulosic fiber pulp through steeping, ageing, yellowing, dissolving, defoaming and filtering; (B) adding a titanium dioxide solution into the spinning solution so that the weight ratio of titanium dioxide to alpha cellulose content in the spinning solution reaches (0.5-5.0):100; and uniformly mixing and feeding for spinning; (C) feeding the spinning solution into a spinning machine, and enabling the spinning solution to pass through a spinneret orifice of a single-hole spray head under pressure, and solidifying and molding the formed viscose trickle to form raw silk strips, wherein the spray head is stretched by +60% to +80%, and an inlet channel of the spinneret orifice is in a parabola shape; and (D) performing aftertreatment: performing desulfurization, bleaching, oiling and drying on the raw silk strips to obtain the viscose flat monofilament. According to the production technology provided by the invention, the filament number of the prepared viscose monofilament is 50-6,000D, the strength is high over 75CN, and the requirements on dyeing, weaving and finished product taking are met; and moreover, the viscose extinction monofilament has gentle color and an extinction effect.

An optical cellulose acylate film comprising a polymer component which is a cellulose acylate obtained by substituting hydroxyl groups of a cellulose by an acetyl group and an acyl group having 3 or more carbon atoms, wherein a substitution degree A of the acetyl group and a substitution degree B of the acyl group having 3 or more carbon atoms satisfy the following formulae (I) and (II): 2.0≦A+B≦3.0 (I), 0<B (II), and the optical cellulose acylate film comprises a retardation-expressing agent which is at least one of a rod-like compound and a discotic compound or an elastic modulus E(MD) in a casting direction and an elastic modulus E(TD) in a casting width direction satisfy the following formulae (III) and (IV): 1,500 MPa≦E(MD)≦3,400 Mpa (III) and 1,200 MPa≦E(TD)≦3,400 Mpa (IV).

The invention discloses a method for preparing a functional polymer material, and belongs to the field of fiber material and plastic processing. The invention aims at solving the shortcomings of low efficiency and high cost of carrying out functionalization on traditional polymer materials by blending and surface chemical grafting. The method disclosed by the invention comprises the following steps: acting an alternating electric field on functional material particles to be physically embedded on the surface of an extruded base material of the polymer material, carrying out chemical crosslinking and physical blending on a crosslinking group and the surface of the base material of the polymer material, and blowing cold air to the base material of the polymer material for curing or blowing cold air to the base material of the polymer material for curing after stretching to obtain the functional polymer material. The selection range of functional substances in the method disclosed by the invention is very wide, the utilization rate is high, the effect is good, the dosage is small, the preparation procedure of the material is short, and the efficiency is high, so that the method can be widely used in the fields of the textile and garment industry, plastic industry, environmental management, drug extraction and the like.

The invention discloses a preparation method of a bacterial cellulose composite polymer superfine fiber material. The method comprises following steps: dissolving polymers in an organic solvent to prepare a homogenous polymer spinning solution, ejecting the polymer spinning solution from a spinning nozzle by adopting an electrostatic spinning method, spraying the ejected polymer solution trickles on bacterial cellulose membranes, which contain absolution ethanol or water, and finally subjecting the processed bacterial cellulose membranes to a post-treatment so as to obtain the bacterial cellulose composite polymer superfine fiber material. The preparation method has the advantages of simple and practicable preparation process, convenient operation, and low cost; is capable of manufacturing a plurality of kinds of bacterial cellulose composite polymer superfine fiber materials, enlarges the application area of bacterial cellulose composite materials, and has a very vast industrial application prospect.

The invention discloses a tissue engineering fiber bundle structure body and a preparation method thereof. The invention provides a method A or B for preparing hydrogel fiber filaments containing cellular components. The method A comprises the following steps: 1) compositing a hydrogel material utilized as a matrix with cellular components to obtain a mixture containing cellular components; and 2) putting the mixture obtained in the step 1) into crosslinked fluid corresponding to the matrix to undergo crosslinking, thus obtaining the hydrogel fiber filaments containing cellular components. Experiments prove that the design can comprehensively meet the special bionic requirements of high-density cell composition, good vascularization development trend and achievement of directionally ordered structure in tissue engineering, so that the structure body is good in vascularization development prospect and can hopefully break through the development bottleneck that the tissue engineering can not become large and thick at present.

The invention discloses a method for preparing a peanut protein composite fiber by using ionic liquid. The method comprises the following steps of: dissolving peanut protein and polyvinyl alcohol in imidazole ionic liquid respectively to obtain a peanut protein ionic liquid solution and a polyvinyl alcohol ionic liquid solution; mixing the peanut protein ionic liquid solution and the polyvinyl alcohol ionic liquid solution in a mixed ratio of 1:3-1:5; adding an aid to obtain a spinning solution, and entering a coagulating bath; preparing a peanut protein/polyvinyl alcohol composite fiber by awet spinning method in the coagulating bath; and stretching, washing, performing acetal treatment, applying oil, drying, curling, sizing, and thus obtaining the mixed fiber. By the method, the ionic liquid instead of strong acid and strong alkali is used as a solvent in the process of synthesizing a peanut protein fiber, so that the peanut protein and the polyvinyl alcohol can be quickly dissolved at high concentration and a low temperature, and the preparation process is non-toxic and pollution-free at the same time.

A reaction product comprises a polyester-polycarbonate comprising a polyester unit and a polycarbonate unit, a polycarbonate polymer, and a transesterification catalyst. The reaction product has a haze of less than 1.7% as measured at a thickness of 3.2 mm according to ASTM D1003-00. A thermoplastic composition comprising the reaction product and articles formed from therefrom are disclosed. A method of forming the reaction product is also disclosed.

The invention discloses a preparation method of dye-absorption fibers. The preparation method of the dye-absorption fibers comprises the steps that a cationic cellulose ether aqueous solution with the concentration of 5g/L-100g/L is prepared, an alkali compound is added to the cationic cellulose ether aqueous solution to adjust the pH value to be 11-13, viscose is put into the cationic cellulose ether aqueous solution to be reacted for 15-60 minutes at the temperature of 80-100 DEG C, and poly quaternary ammonium salt viscose is obtained; the poly quaternary ammonium salt viscose is taken out and dried, and then the dye-absorption fibers are obtained. The invention further provides a preparation method of dye-absorption non-woven cloth. The preparation method of the dye-absorption non-woven cloth comprises the steps that the dye-absorption fibers are provided; lapping is carried out on the dye-absorption fibers; net fixation is carried out on the dye-absorption fibers after lapping, and the cloth is obtained. By means of the preparation method of the dye-absorption fibers and the preparation method of the dye-absorption non-woven cloth, dye-absorption non-woven cloth with high absorption force and tearing resistance can be prepared.

A method for the extrusion of a silk fibre from a water-soluble material which comprises providing the water-soluble material (25) in a liquid form, extruding the water-soluble material (25) through an opening (40) to form a precursor of the extruded silk fibre (53) and receiving the precursor on a moving surface (50). The precursor is treated on the moving surface (50) to form the silk fibre.

The invention provides high-wet-modulus and flame-retardant regenerated cellulose fibers. The high-wet-modulus and flame-retardant regenerated cellulose fibers are prepared by adding 15 to 25wt% of pyrophosphate fire retardant to spinning dope for spinning in a blending way. The preparation method comprises the following steps in sequence: preparing the spinning dope for spinning; compounding and adding the flame retardant; spinning; stretching; and post-processing. The high-wet-modulus and flame-retardant regenerated cellulose fibers remain the hand feel and skin-friendly properties of cellulosic natural fibers, are high in fire resistance, free from risk due to second scalding, high in spinnability and less in loss of fire retardant, the retention rate reaches 98%, resistance to acid and alkali is good, and the fibers can be applied to the spinning industries such as the textile and garment materials industry and the underwears industry.

A swellable polymer based fibre and a method of preparing the same optionally comprising glycol, lecithin and optionally an antimicrobial metal species suitable, for example, for medical applications including wound dressings. A method of manufacture may comprise fibre extrusion or spinning involving one or a plurality of in-series coagulation baths to add single or multiple antimicrobial metal species to the as-formed fibre.

The invention provides a silk hemp cellulose fiber and a preparation method thereof. The cellulose fiber is 1.8-2.5cN/dtex in dry breaking strength, is 0.9-1.6cN/dtex in wet breaking strength, is 16-24% in dry breaking elongation, is less than or equal to 12mg/100g in residual sulfur content, is more than or equal to 90% in staphylococcus aureus antibacterial rate, is more than or equal to 90.0% in escherichia coli antibacterial rate, and is more than or equal to 80.0% in candida albicans suppression ratio. The preparation method of the silk hemp cellulose fiber comprises the steps of preparing a hemp pulp viscose spinning solution, preparing a protein dispersing emulsion, preparing a hemp pulp protein modified spinning solution, spinning and aftertreatment. The silk hemp cellulose fiber has the smooth and soft hand feeling, feels like hemp, has the smooth zigzagged cross section like the hollow cross section of a natural hemp material, is environmentally-friendly and has the good wearability and textile processability, and besides, a protein material is uniformly dispersed inside the fiber, and therefore, the silk hemp cellulose fiber can resist multiple washing and cannot shed off.