4141results about "Fibre types" patented technology

Absorbent articles and processes for making absorbent articles are provided. The process includes spraying onto a fibrous web a blend containing superabsorbent polymer particles, superabsorbent forming monomer, initiator and water, and subjecting the web to polymerization conditions. The resulting web is useful as an absorbent article particularly in disposable hygiene products.

The present invention relates to a substrate having antimicrobial and/or antistatic properties. Such properties are imparted by applying a coating or film formed from a cationically-charged polymer composition. The polymer composition includes a noncationic ethylenically unsaturated monomer, an ethylenically unsaturated monomer capable of providing a cationic charge to the polymer composition, and a steric stabilization component incorporated into the cationically-charged polymer composition. The present invention also relates to a polymeric material comprising a base polymer blended with the above cationically-charged polymer composition.

A method for forming a nonwoven fibrous structure comprising a plurality of synthetic fibers. The method employs a hydrophilizing agent. The synthetic fibers may associate with one or more hydrophilizing agents.

The present invention relates to hydrophilic synthetic nonwoven webs. At least a region of 1 cm by 1 cm comprised by the web of the invention comprises cross-linked hydrophilic polymers and has a retention capacity of less than 100 g of aqueous liquid per m² of the nonwoven fibrous web. Moreover, the invention relates to a method for making such nonwoven webs. Furthermore, the invention also relates to absorbent articles comprising the nonwoven webs comprising cross-linked hydrophilic polymers.

A nonwoven fibrous structure comprises a plurality of synthetic fibers. The synthetic fibers may be associated with one or more hydrophilizing agents. A process for making the nonwoven fibrous structure involves association of the synthetic fibers with one or more hydrophilizing agents.

The invention provides a metal organic framework/polymer nanofiber composite membrane material and a preparation method thereof. The metal organic framework/polymer nanofiber composite membrane material is characterized by being prepared from a polymer nanofiber membrane; a metal organic framework layer grows on the surfaces of nanofibers in the polymer nanofiber membrane. The preparation method is characterized by comprising the steps of firstly preparing the polymer nanofiber membrane, hydrolyzing the polymer nanofiber membrane, and putting the hydrolyzed polymer nanofiber membrane into a precursor solution of a metal organic framework to enable the metal organic framework to grow on the polymer nanofiber membrane so as to obtain the metal organic framework/polymer nanofiber composite membrane material. The metal organic framework/polymer nanofiber composite membrane material has great application potential in the fields such as gas adsorption and separation, catalysts, sensors and electrode materials.

The invention relates to aqueous polyurethane superfine fiber synthetic leather and a preparation method thereof. The preparation method comprises the following steps of: firstly, adding the following components according to parts by weight, i.e. 2-5 parts of foaming agents, 50-200 parts of water, 2-3 parts of foam stabilizers and 0-3 parts of waterborne colorants, into 100 parts of aqueous anionic polyurethane dipping sizing agents, and stirring the components and the sizing agents uniformly at high speed by using a blender so as to prepare a sizing agent; secondly, dipping non-woven fabricsin the sizing agent, scrapping the surface of the fabrics and keeping partial cells; thirdly, solidifying aqueous polyurethane on the dipped non-woven fabrics through aqueous coagulating liquid so asto form cells; fourthly, carrying out water scrubbing after aqueous polyurethane resin is completely solidified, and drying the aqueous polyurethane resin by an infrared drying oven so as to obtain base cloth; fifthly, treating the dried base cloth through an alkali reducing process; sixthly, treating the base cloth treated through the alkali reducing process through an postprocessing process; and seventhly, preparing the obtained base cloth into the synthetic leather. The aqueous polyurethane superfine fiber synthetic leather is prepared by the method.

The invention relates to terylene coral fleece blanket fabrics and a processing method thereof, which belongs to the technical field of terylene fiber products and comprises voile weave and ground weave, the raw material used by the voile weave is DTY terylene filament in 133dtex/192f, 111dtex/192f or 111dtex/144f, and the raw material used by the ground weave is FDY terylene filament of 75dtex/24f, wherein the mass percentage of the DTY terylene filament occupied in the fabrics is 60-70 percent, and the mass percentage of the FDY terylene filament occupied in the fabrics is 30-40 percent. The invention can lead villus of the fabrics to be straight so as to have excellent lodging resistance and warmth retention property, and can obtain 150-250g/m<2> of gram weight of thread count and be suitable to fabricate household wares such as bathrobe, sleepwear, sheet, and the like. The method can ensure the advantages of the terylene coral fleece blanket fabrics, and can lead the terylene coral fleece blanket fabrics to have better sterilizing, antistatic and anti-allergic effects so as to meet the serviceability.

The invention relates to an electroconductive textile material and method of preparation thereof. The method consists mainly of two stages: 1) special pretreatment of the fabric substrate for activation and making it suitable for subsequent application and strong attachment of a conductive coating with the use of a layer-by-layer technique (LBL); 2) subsequent application and strong attachment of a conductive coating by means of a layer-by-layer technique. The first stage may be carried out thermally, thermochemically, by treating in hot solutions, or plasma-chemically by plasma treatment. The pre-treatment may be performed, e.g., for swelling and/or for the formation of unsaturated chemical bonds or uncompensated charges in the fabric material. The pretreatment is needed to ensure more efficient penetration of chemical components into the fabric structure during subsequent LBL applications of treatment solutions that contain nano-particles and that determine the density of the molecular layer. The types and amounts of the nano-particles determine their charge density (solution pH is very important for charge density) in the sublayer. Such a pretreatment increases bonds of the applied layers with the substrate material.

The invention relates to a method for improving the creep resistant performance of an ultra-high molecular weight polyethylene fiber; and the method is characterized by jointly triggering crosslinking by using a photosensitizer and a thermal initiating agent, thereby crosslinking points of the surface and interior of the ultra-high molecular weight polyethylene fiber are increased, the crosslinking efficiency of a cross-linking agent is improved, the relative slippage among molecules of the ultra-high molecular weight polyethylene fiber is effectively impeded and the creep resistant performance of the fiber is increased.

The invention provides an antibacterial non-woven fabric and a preparation method thereof. Both the upper surface and the lower surface of the antibacterial non-woven fabric are provided with antibacterial film-forming agent layers; each antibacterial film-forming agent layer is obtained by thermally curing a polymer film-forming agent; the polymer film-forming agent has the viscosity of 50-20,000cp and the solid content of 5-55 percent; the film-forming agent has the fluid rate of 2-20 percent; and the polymer film-forming agent is prepared from the following raw materials in percentage by mass: 80-94 percent of a high polymer emulsion, 1-10 percent of a bacteriostatic agent and 5-10 percent of an addition agent. The polymer film-forming agent is selectively roller-coated on the non-woven fabric after the non-woven fabric is formed, so that an antibacterial effect of the non-woven fabric is improved, the antibacterial time is prolonged, and the really long-term antibacterial purpose is achieved.

A binder is applied to particles which are then combined with fibers to bind the particles to the fibers. The particles have functional sites for forming a hydrogen bond or a coordinate covalent bond. The fibers have hydrogen bonding functional sites. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers may be adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.

The invention relates to a method for preparing a conductive ultrahigh molecular weight polyethylene fiber. The conventional method is complicated in process and causes environmental pollution. The method comprises the following steps of: firstly, immersing the ultrahigh molecular weight polyethylene fiber into acetone, ethanol or a tetrahydrofuran solution, performing ultrasonic washing on the fiber and airing; secondly, dissolving a dopamine substance into a buffer solution to prepare an activation solution, placing the ultrahigh molecular weight polyethylene fiber into the activation solution and activating the ultrahigh molecular weight polyethylene fiber under stirring; and finally, immersing the activated ultrahigh molecular weight polyethylene fiber in a plating solution at temperature of 10 to 60 DEG C for 0.5 to 10 hours so as to finish silver plating. By the method, the surface of the ultrahigh molecular weight polyethylene fiber is activated by using dopamine polymer and metallized by using chemical plating, so that the ultrahigh molecular weight polyethylene fiber with extremely high conductivity can be obtained; and the whole process is environment-friendly and pollution-free.

The invention relates to a bacterial cellulose/polymer composite film and a preparation method thereof. The bacterial cellulose/polymer composite film is formed by compounding bacterial cellulose fibers on a polymer porous material in situ. The method comprises the following steps of: (1) activating strains, finally inoculating into a liquid culture medium to culture, infiltrating the surface of the porous polymer film in the liquid culture medium and exposing in air; (2) repeating the operation every 2-3 days until a composite film is formed; (3) post-treating the composite film to be neutral to obtain a bacterial cellulose/polymer composite gel film; and (4) drying the gel film obtained in the step (3) to constant weight to obtain the bacterial cellulose/polymer composite dry film. The invention solves the problem of low mechanical strength of a single bacterial cellulose film. By utilizing hydrogen bonding produced by hydroxyl groups on cellulose macromolecules, the strength, the durability and the water absorbability of the bacterial cellulose/polymer composite gel film and the composite dry film are improved.

A conductive fabric is provided. The conductive fabric comprises a base layer composed of a synthetic, regenerated or natural fiber, a conductive layer formed on the base layer to be capable of being freely formed by a pre-designed electric pattern, and an insulating layer formed on the conductive layer to protect the conductive layer from damage.

The invention discloses a polyester FDY oil agent and a preparation method thereof. The heat resistance of the existing oil agent is poor with serious volatilization, which results in heavy smog in the workshop and seriously affects the working environment and the body health of the workers; also the oil agent has serious coking phenomena and causes yarn waste and broken ends. The ingredients of the invention and the weight percentages are as follows: 55-65% of high-temperature smoothing agent, 15-25% environment-friendly emulsifying agent, 3-10% binder, 5-8% compound anti-static agent and the rest is additive; and the high-temperature smoothing agent contains special polyether. The invention has good heat resistance and is suitable for the high-speed spinning technique of various polyester fibers (including the high denier); and the oil agent provided by the invention does not generate smoke and does not coke on the hot roll.

The invention relates to non-woven fabric, in particular to graphene oxide composite non-woven fabric and a preparation method and application thereof. The graphene oxide composite non-woven fabric is provided with a non-woven fabric base material, pulp is poured into the non-woven fabric base material, or the surface of the non-woven fabric base material is coated with a pulp layer; the pulp is prepared from graphene oxide or graphene oxide blend, an adhesive and a solvent, and the graphene oxide blend is prepared from graphene oxide, a polymer and an inorganic substance. The preparation method comprises the steps that 1, graphene oxide or the graphene oxide blend, the adhesive and the solvent are mixed and then subjected to ball milling, and the pulp is obtained; 2, the pulp is poured into the non-woven fabric base material or smeared to the surface of the non-woven fabric base material, and after drying, the graphene oxide composite non-woven fabric is obtained. The graphene oxide composite non-woven fabric can be applied to preparation of a lithium sulphur battery, and according to the application, the graphene oxide composite non-woven fabric serves as a diaphragm in the lithium sulphur battery.

The invention relates to a temperature-regulating intelligent tent fabric and a preparation method of the temperature-regulating intelligent tent fabric. The temperature-regulating intelligent tent fabric comprises a paulin matrix and a temperature-regulating coating, wherein the temperature-regulating coating comprises doped vanadium dioxide (V (1-x)Mx)O2 nanopowder or micelle, wherein 0 <= x <= 0.03. The preparation method of the temperature-regulating intelligent tent fabric comprises the following steps of: (1) preparing doped (V(1-x)Mx)O2; and (2) applying the doped (V(1-x)Mx)O2 to the paulin matrix by coating, padding or impregnating to obtain the temperature-regulating intelligent tent fabric. The temperature-regulating intelligent tent fabric can effectively improve the temperature in a tent, greatly improve the degree of comfort of a user and play a good role in the aspects of field construction, amusement and tourism, geological exploration, rescue and relief work, field hospitals and outdoor banquets, is easy to operate, is low in cost and has a good application prospect.

The invention provides a polymeric hydrogel grafted on fibers by calcium ion crosslinking and a preparation method thereof. The polymeric hydrogel comprises the following components in percentage by mass: 3-8% of sodium polyacrylate grafted fiber, 0.96-4% of sodium alginate, 0-2% of water-solubility polymeric additive, 0.96-8% of calcium chloride and 75-95% of deionized water. The preparation method comprises the following steps: grafting polyacrylic acid on fibers by ultraviolet radiation; neutralizing with sodium hydroxide to obtain sodium polyacrylate-grafted fibers; soaking sodium polyacrylate-grafted fibers in an aqueous sodium alginate solution; taking out and scraping off the superabundant adherent viscous solution; and crosslinking in an aqueous calcium chloride solution to obtain the calcium alginate hydrogel grafted on the fibers. The preparation method is simple to operate, and the prepared polymeric hydrogel grafted on fibers has application prospects in the fields of adsorption separation, drug control and release, immobilized enzyme, tissue engineering and the like.

The invention relates to a method for modifying aramid fiber by using carbon nano tubes, which comprises the following steps of: selecting an epoxy resin/ aramid fiber composite material as a research object, selecting the carbon nano tubes as a surface modification material, forming free amino groups in a certain ratio on the aramid fiber by a chemical modification method, soaking the aramid fiber into N-methylpyrrolidone solution (NMP), and reacting the solution and the surface carboxylation carbon nano tubes with the aid of ultrasonic, wherein part of carbon nano tubes enter the interior of Kevlar fiber, and the other part of carbon nano tubes are fixed on the surface of the fiber through amido bonds formed by the carbon nano tubes and amino, thus, a aramid fiber complex inside and outside which the carbon nano tubes are doped is formed. Single fiber tensile test results and single fiber pull-out test results show that the mechanical property of the modified aramid fiber and the interface bonding strength with the epoxy resin are improved.

A method of modifying a polymeric material which comprises the steps of activation-treatment and a hydrophilic polymer-treatment, or comprises the steps of activation-treatment, a hydrophilic polymer-treatment, and monomer grafting in this order, or comprises the step of a solvent-treatment followed by these steps. Thus, the polymeric material, e.g., polyolefin, is improved in hydrophilicity, adhesion, etc. without lowering the practical strength thereof The polymeric material thus improved in adhesion and other properties can be used in many applications where water absorption and adhesion are required, such as an absorption material, e.g., a wiping/cleansing material, a water retention material, a material for microorganism culture media, a separator for batteries (or cells), a synthetic paper, a filter medium, a textile product for clothing, a medical/sanitary/cosmetic supply, and reinforcing fibers for composite materials.

The invention belongs to a manufacture method of an antibacterial conductive acrylic fiber, which is characterized by being composed of the following steps: (1) arranging the acrylic fiber into a reaction vessel, then pouring a solvent into the reaction vessel, dissolving copper salt containing Cu<2+> into the solvent, adjusting the pH valve of the solution to be between 1.5 to 3.0, then adding a reducer and heating, maintaining the temperature of the solution to be between 90 to 100 DEG C, carrying out reduction on the Cu<2+> by utilizing the reducer to generate Cu<+> and lead the Cu<+> to be absorbed on the acrylic fiber; (2) adjusting the pH value of the solution to be between 1.5 to 3.0 and then maintaining the temperature of the solution to be between 40 to 120 DEG C, adding salt containing sulfur atoms and leading a great amount of Cu<+> to be oxidized to generate the Cu<2+> after the reaction time lasts 2 to 4 hours; thereby generating a sulfide of copper that is not easy to be dissolved in the solvent to lead the sulfide of copper to be sufficiently and uniformly dispersed on the surface of the whole fiber. The copper sulphide in the acrylic fiber manufactured by utilizing the method is dispersed on the surface of the whole fiber. The self physical and chemical characteristics of the copper sulphide lead the fiber to have excellent antibacterial property and conductibility; the copper sulphide on the fiber surface is not easy to fall off and has excellent anti-washing property.

The invention provides a method for preparing strong acidic ion-exchange fibers. The method comprises the steps of performing vacuum packaging for polyolefine fibers; pre-irradiating through a radiation source; feeding pre-irradiated polyolefine fibers into a grafting solution under the protection of inert gas to react to obtain a polyolefine fiber grafting copolymer; then sulphonating through chlorosulfonic acid to obtain strong acidic ion-exchange fibers; a cross-linking agent is fed into the grafting solution to enable high mechanical strength and relatively high exchange capacity of the sulphonated fibers. According to the method, the process is simple, the polyolefine fiber grafting copolymer is easily prepared under a low temperature condition; the prepared polyolefine fiber-styrene copolymer is low in styrene autopolymer (less than 2%); the dichloroethane solution of chlorosulfonic acid is treated as a sulphonating agent, so that little chlorosulfonic acid is used, and the post-processing is simple.

A woven fabric consists of a generally uniformly woven structure of hydrophobic and hydrophilic materials and has inner and outer exposed surfaces of hydrophobic and hydrophilic materials. The inner exposed surface is between 40% and 70% hydrophobic material, and the outer exposed surface is predominantly hydrophilic material.

The present invention discloses a soft body anti-pricking material. Said soft body anti-pricking material includes fiber fabric and liquor with shear thickening characteristics, said liquor with shear thickening characteristics is combined in the interior or surface of said fiber fabric. Said invention also provides a soft body anti-pricking composite structure, said structure includes two layers or more than two layers laminated fiber fabric and liquor with shear thickening characteristics, said liquor with shear thickening characteristics is combined in the interior of one layer of said laminated fiber fabric or combined between two layers of said laminated fiber fabric.

The invention provides an amidoxime-based chelate polyacrylonitrile fiber and its preparation method. The preparation method of the amidoxime-based chelate polyacrylonitrile fiber comprises the following steps that 1, polyacrylonitrile fibers are subjected to irradiation cross-linking under the conditions of an inert gas atmosphere and an irradiation amount of 20 to 2000kGy; and 2, the polyacrylonitrile fibers subjected to irradiation cross-linking undergo an amidoximation reaction. The invention also provides a use of the amidoxime-based chelate polyacrylonitrile fiber as a metal ion adsorption material. Through the preparation method which is simple relatively, the amidoxime-based chelate polyacrylonitrile fiber which has good mechanical properties, high fiber breaking strength, a long reuse life and stable performances and is damaged difficultly is obtained. The amidoxime-based chelate polyacrylonitrile fiber can be utilized as a metal ion adsorption material, is suitable for the fields of purification of industrial waste water or slag, or extraction of uranium of seawater, has excellent effects of adsorbing multiple metal ions, and can greatly reduce an industrial cost.

The invention relates to an elastic conductive composite fiber and a preparation method thereof. The elastic conductive composite fiber comprises a core layer and a skin layer and is characterized in that: the skin layer consists of conductive particles, and the core layer is made of elastic polymer fibers. The preparation method comprises the following steps of: preparing conductive particle pretreatment solution from 10 to 90 weight percent of conductive particles, 5 to 20 weight percent of treatment agent and the balance of solvent; and soaking the elastic polymer fibers into the conductive particle pretreatment solution, performing ultrasonic treatment for 10 to 500 seconds, taking out the elastic polymer fibers, and cleaning and drying the elastic polymer fibers to prepare the elastic conductive composite fiber. The conductive fiber with high-elasticity mechanical property, electric conductivity and weaving property is obtained with simple steps and low cost. Besides traditional antistatic property and electromagnetic shielding function, the novel polyurethane composite conductive fiber and the fabric have good application prospect on the aspects of gas and liquid sensing, temperature sensing and the like.

Belonging to the field of chemical fiber production, the invention relates to an aramid fiber surface modification method. The method provided in the invention consists of: preparation of a surface modification treating agent, coating of the surface treatment agent, and drying treatment. For the surface modification treating agent in the surface modification treating agent preparation, a fluorocarbon silane coupling agent with the following molecular structure is adopted and dissolved in an organic solvent for direct use, or a fluorocarbon active agent is adopted and emulsified as well as dispersed in water for direct use. After being treated by the surface modification method provided in the invention, the aramid fiber is soft and dispersive, its characters and quality are stable. Also the fiber surface polarity is enhanced, and the interfacial properties of an aramid fiber and epoxy resin matrix are improved. The interlaminar shear strength of a modified aramid fiber/epoxy composite material can reach 50-58MPa.

The invention relates to a bacteriostatic antistatic multifunctional non-woven fabric which is fabricated by the steps of unwinding non-woven gray fabric; applying finishing agent by using an ultrasonic foam applicator; extruding out redundant finishing agent by using a rolling mill; and then drying by using a baking oven and winding. The finishing agent includes the following components: sodium dodecyl sulfate, hydroxyethyl cellulose, nanometer silver powder, penetrating agent JFC, nano-silica, gamma-aminopropyltriethoxysilane, sorbitan ester, cetyltrimethyl ammonium chloride, methacrylic acid, beta-cyclodextrin and spices. The non-woven fabric has multiple functions of being antibacterial, anti-static, anti-ultraviolet, washing-resisting, fragrance lasting and the like. Especially the ultrasonic foam applicator is utilized to conduct foam finishing, and the finishing agent can be evenly penetrated in the fiber structure by means of the effect of ultrasonic waves, so as to lead nanometer material in the finishing agent and particles of the spices to disperse in the fabric and to be wrapped by organic matters to form a microcapsulation state, so that all functions and effects are lasting.

The invention provides a new knitted fabric with a unidirectional moisture conducting function, solving the following problems: the existing knitted fabrics with a unidirectional moisture conducting function are mostly modified processed products, the unidirectional moisture conducting function has poor durability, the processing technology of the fabrics is complex and the processing efficiency is low. The new knitted fabric has a layer structure and is characterized in that the knitted fabric has a double-layer fabric structure; the double-layer fabric structure comprises inner hydrophobic fibers and outer hydrophilic fibers; and the inner hydrophobic fibers are polypropylene fibers. The invention also provides a processing technology of the knitted fabric with a unidirectional moisture conducting function. The processing technology comprises the steps of gray fabric weaving, gray fabric pre-processing, dyeing, reduction clearing and setting.