Rayon; yarn; silk thread and yarn; rayon thread and yarn;
darning thread and yarn; nylon thread; threads of plastic
materials for textile use; worsted; synthetic caddice wool
yarn; filament yarn.
Rayon yarn; yarn; silk thread and yarn; rayon thread and yarn; darning thread and yarn; nylon thread; threads of plastic materials for textile use; worsted thread and yarn; synthetic caddice wool yarn; filament yarn.
Disclosed in the present invention are a novel non-woven fabric wound dressing, a preparation method therefor and an application thereof. The wound dressing is prepared from modified polyester fibers, modified chitosan fibers and modified calcium alginate fibers by means of a spunlaced or needling non-woven processing procedure, wherein the modified polyester fibers are 20-40 parts by mass, the modified chitosan fibers are 10-20 parts by mass, and the modified calcium alginate fibers are 10-40 parts by mass; the modified polyester fibers contain 5-10 wt% of nano silver, the modified chitosan fibers contain 0.1-1 wt% of copper ions, and the modified calcium alginate fibers contain 0.1-2 wt% of zinc ions. Also disclosed is an application of the novel non-woven fabric wound dressing in skin wound covering dressings. According to the wound dressing, the antibacterial effect can penetrate through the whole wound healing process, the effects of promoting angiogenesis, promoting reepithelization and the like can be achieved, and therefore the effective promoting or auxiliary accelerating effect is achieved in the wound healing process.
A61L 15/26 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bondsDerivatives thereof
A61L 15/18 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
A61L 15/46 - Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
D01F 9/00 - Man-made filaments or the like of other substancesManufacture thereofApparatus specially adapted for the manufacture of carbon filaments
6.
ALGINATE MEDICAL FIBER, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Disclosed in the present invention are an alginate medical fiber, and a preparation method therefor and an application thereof. The preparation method comprises: mixing a chitosan solution containing copper ions with a sodium alginate solution containing silver ions to obtain a blended spinning solution, then performing wet spinning, then respectively performing treatment in a first coagulating bath and a second coagulating bath, washing in a bath, and performing drawing and drying, wherein the first coagulating bath is an aqueous solution containing calcium ions and zinc ions, and the second coagulating bath is an ethanol aqueous solution containing calcium ions. Also provided is the use of the prepared alginate medical fiber as a short staple fiber for preparing a nonwoven medical dressing, or as a fiber raw material to be woven into a sheet, a tubular or a special shape, for use in the fields of tissue repair such as oral repair, hernia repair, ureteral stents, nerve repair, and hard tissue repair. The alginate medical fiber of the present invention have the advantages of effectively promoting or assisting in accelerating wound healing, and excellent mechanical properties.
Disclosed are a polycarbonate and a synthesis method therefor, and a rigid monomer and a preparation method therefor. The polycarbonate comprises the structural unit as shown in formula (i) below; in addition, the polycarbonate can be synthesized by using the structure shown in formula (I), such that the synthesized polycarbonate not only overcomes the defects of existing polycarbonate BPA-PC, but is also biodegradable, diversification of the structure and function is easily realized, the polycarbonate has good weather resistance and the potential for industrialization, and environmental protection requirements are met. In particular, the rigid monomer of the present invention can be prepared from bio-based materials such as citric acid, the raw materials are widely available, low in price and renewable, dependence on petroleum resources can be reduced from the source, and industrial application is facilitated.
C08G 64/30 - General preparatory processes using carbonates
C07C 35/31 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring polycyclic, at least one hydroxy group bound to a condensed ring system with a hydroxy group on a condensed ring system having two rings the condensed ring system containing eight carbon atoms
C07C 29/143 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen-containing functional group of C=O containing groups, e.g. —COOH of ketones
C07C 67/343 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by isomerisationPreparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by change of size of the carbon skeleton by increase in the number of carbon atoms
C07C 69/757 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
C07C 67/31 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by introduction of functional groups containing oxygen only in singly bound form
C07C 45/67 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by isomerisationPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by change of size of the carbon skeleton
C07C 49/443 - Saturated compounds containing a keto group being part of a ring polycyclic a keto group being part of a condensed ring system having two rings the condensed ring system containing eight or nine carbon atoms
8.
Emulsion composition, polystyrene nano-fiber, polystyrene nano-fiber product, preparation method, and use thereof
An emulsion composition, a polystyrene nano-fiber, a polystyrene nano-fiber product and a preparation method and use thereof, wherein the emulsion composition comprises a dispersed phase and a continuous phase, the dispersed phase contains a soluble salt and a first solvent, the continuous phase contains polystyrene, a second solvent and sulfonated polystyrene being syndiotactic polystyrene and/or isotatic polystyrene; the preparation of the emulsion composition: under heating and stirring, dropwise adding the dispersed phase into the continuous phase; the preparation of the polystyrene nano-fiber or polystyrene nano-fiber product: crystallize the above emulsion composition; the polystyrene nano-fiber prepared by the above emulsion composition has a pore structure, and the prepared product has a stable and controllable three-dimensional structure and multi-level and/or intercommunicated pore structure, and also has a high preparation efficiency, therefore the above polystyrene nano-fiber or product has excellent application prospects in absorption, adsorption, oil-water separation, and construction of special wettability surfaces.
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
C08L 25/18 - Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
D01F 6/22 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of cyclic compounds with one carbon-to-carbon double bond in the side chain from polystyrene
9.
PRODUCTION METHOD FOR FALSE TWISTING AND ELASTICIZING OF YARN AND DETECTION METHOD FOR TAIL-PASSED JOINT IN YARN FALSE TWISTING AND ELASTICIZING PROCESS
A production method for false twisting and elasticizing of yarn and a detection method for a tail-passed joint during the false twisting and elasticizing of the yarn. The production method comprises: carrying out a false twisting and elasticizing procedure on a plurality of rolls of yarn filaments which are sequentially connected end-to-end; and also comprises: (1) transferring yarns of the plurality of rolls of yarn filaments which are sequentially connected end-to-end through a detection channel, and then carrying out the false twisting and elasticizing procedure, wherein the detection channel is configured to collect information about the change in position for switching one roll of yarn filaments with all the yarn unwound to the next roll of yarn filaments which is in end-to-end connection with the previous roll of yarn filaments, and each piece of information about the change in position identifies a tail-passed joint; and (2) when one piece of information about the change in position is collected, replacing the roll of yarn filaments which is rolled up after false twisting and elasticizing and has a tail-passed joint, carrying out new false twisting and elasticizing for a roll, and then repeating the operation. According to the method, the tail-passed joint can be easily removed, the quality of the roll of yarn filaments is guaranteed, and, by automatically detecting information of the tail-passed joint, the phenomenon of incorrect recording or missed recording caused by excessive dependence on manual intervention is prevented, the efficiency is improved, and the cost is reduced.
B65H 63/08 - Warning or safety devices for use when unwinding, paying-out, forwarding, winding, coiling, or depositing filamentary material, e.g. automatic fault detectors or stop-motions responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
D02G 1/02 - Producing crimped or curled fibres, filaments, yarns or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e . by imparting false twist
D01H 13/32 - Counting, measuring, recording or registering devices
Disclosed in the present invention is a processing method for a strip-shaped fabric, comprising: 1) using warp knitting to knit a warp knitted fabric that can be separated into strip-like fabric, comprising at least one decomposable unit and at least two warp knitting units, each two adjacent warp knitting units being connected by a decomposable unit, each warp knitting unit being strip-shaped fabric formed by knitting in the warp direction at least one kind of yarn, and the decomposable unit being formed by knitting in the warp direction a decomposable connecting yarn that can be decomposed by physical and/or chemical methods; 2) superimposing and fixing the manufactured fabric and a bottom cloth; and 3) decomposing the decomposable connecting yarn to obtain at least two strip-shaped fabrics that are respectively independently superimposed and fixed on the bottom cloth, and separating same; the present method innovatively prepares specific warp knitted fabric which can be dyed and shaped by clothing fabric dyeing and finishing equipment before being separated into strip-shaped fabric; the strip-shaped fabric can be separated after the structure is stabilised, thereby implementing simultaneous knitting of multiple structurally stable strip-shaped fabrics that can be dyed on an overflow dyeing machine.
D04B 21/20 - Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machinesFabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
D06B 3/28 - Passing of textile materials through liquids, gases, or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics propelled by, or with the aid of, jets of the treating material
11.
WARP-KNITTED FABRIC CAPABLE OF BEING SPLIT INTO WEBBINGS, AND APPLICATION THEREOF
Disclosed in the present invention are a warp-knitted fabric capable of being split into webbings, and an application thereof, formed by warp knitting and comprising at least one dissolvable unit and at least two warp knitting units. Every two adjacent warp knitting units are connected by means of the corresponding dissolvable unit. Each warp knitting unit is a webbing which is formed by weaving at least one type of yarn in a warp direction. The dissolvable unit is formed by weaving a dissolvable connection yarn in a warp direction which can be dissolved by means of a physical and/or chemical method. According to the application of the warp-knitted fabric in preparation of the webbings, specifically, the webbings are obtained by dissolving the dissolvable connection yarn of the warp-knitted fabric by means of the physical and/or chemical method; the warp-knitted fabric can be dyed and shaped by a dyeing and finishing apparatus for garment fabric before the warp-knitted fabric is split into the webbings, so that after the structure is stable, webbing splitting is performed, that is, the effects that multiple dyeable webbings having a stable structure can be woven simultaneously, and the width of the webbings can be adjusted without replacing an apparatus are indirectly implemented.
D04B 21/20 - Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machinesFabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
D02G 3/02 - Yarns or threads characterised by the material or by the materials from which they are made
Disclosed in the present utility model is a modular structural shaft for a smart elevator, the shaft comprising multiple module groups that form the shaft after being assembled. Each of the module groups comprises multiple vertical columns that are arranged in parallel, and horizontal columns that are connected between the vertical columns; the vertical columns are made of square pipes, and guiding inserts are provided at the interior of both the bottom end parts and upper end parts of at least two vertical columns among the vertical columns of each of the module groups; and at least a part of the guiding inserts protrudes beyond the vertical columns, said part being the outer end part. The present utility model uses guiding inserts to achieve guiding for rapid hoisting and insertion, and can sufficiently increase installation efficiency as well as straightness during welding.
Disclosed are a jointly- and independently-driven hybrid dual cab elevator and a driving method therefor, comprising a main lifting/lowering system. The main lifting/lowering system comprises a main cab and a main traction motor. The dual cab elevator also comprises an auxiliary lifting/lowering system capable of moving with the main lifting/lowering system, also capable of moving independent of the main lifting/lowering system, and also capable of driving the movement of the main cab, and a balancing cable guide wheel set provided below the auxiliary lifting/lowering system. The auxiliary lifting/lowering system comprises an auxiliary cab provided below the main cab, an auxiliary control wheel set, an auxiliary traction cable connected to the auxiliary cab and wrapped on the auxiliary control wheel set, and an auxiliary traction motor. Not only can the main cab and the auxiliary operate independently, but the vertical distance between the main cab and the auxiliary cab can also be kept unchanged by means of mechanical measures of releasing and applying a brake with respect to the auxiliary control wheel, thus allowing the main cab and the auxiliary to rely on one traction motor for joint operation, and overcoming the problem with dual sub-cab operation when a certain traction motor malfunctions.
Disclosed are an emulsion composition, a polystyrene nanofiber, a polystyrene nanofiber article and preparation methods therefor and the use thereof. The emulsion composition comprises a dispersion phase and a continuous phase, wherein the dispersion phase comprises a soluble salt and a first solvent, and the continuous phase comprises polystyrene, a second solvent and sulfonated polystyrene, with the polystyrene being syndiotactic polystyrene and/or isotactic polystyrene. The emulsion composition is prepared by dropwise adding a dispersion phase into a continuous phase under heating and stirring conditions; the polystyrene nanofiber or article is prepared by crystallizing the emulsion composition; the polystyrene nanofiber prepared by using the emulsion composition has a porous structure and the prepared article has a stable and controllable three dimensional structure and a multi-level and/or interconnected porous structure, and also has a high preparation efficiency. Therefore, the polystyrene nanofiber or article may have an excellent application prospect in terms of absorption, adsorption, oil water separation, construction of a surface with wettability, etc.
D01F 8/10 - Conjugated, i.e. bi- or multicomponent, man-made filaments or the likeManufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
