77results about How to "Good waterproof and moisture permeability" patented technology

The invention relates to a microporous plastic film. According to the invention, an area of surface pores with diameters within a range of 0.2-7mum accounts for 0.5-15% of a total surface area. A water resistance of the film is higher than 800mm, and a moisture permeability of the film is higher than 1000g/m<2>.day. A stiffness of the film is lower than 40mm. The microporous plastic film provided by the invention has complete biodegradability, and does not cause white pollution. The film is green and environment-friendly, and has good waterproof performance and moisture permeability. The film is soft, and provides a comfortable touch. The film has good forming and processing performances, and can be applied in fields such as sanitary materials, clothing, and building. The microporous plastic film has waterproof, moisture-permeating, and air-permeating effects.

The invention relates to an electrostatic spinning method and device of a fiber-based waterproof moisture-permeable film high in moisture-permeable flux. The electrostatic spinning method includes that during electrostatic spinning, polymer solution jet flow is injected at a certain included angle with air of a certain temperature and/or lateral air flow of non-solvent steam, and polymer molecules in the jet flow are quickened to be separated and solidified into fibers; water-pressure resistance of the electrostatic spinning film, namely the fiber-based waterproof moisture-permeable film high in moisture-permeable flux is greater than or equal to 100kPa, and the moisture-permeable flux is greater than or equal to 15000g/m<2>/d. The electrostatic spinning device is composed of an electrostatic spinning box, a high-voltage direct-current power supply, an electrostatic spinning hydraulic system, a spinning jet and a receiving base material, and a steam generation and air supply system is mounted on one side of the electrostatic spinning box. The fiber-based waterproof moisture-permeable film produced by the method has the advantages of small bore diameter, controllable adhesion degree and high porosity; the film is high in water-pressure resistance and moisture-permeable flux when used in the waterproof and moisture-permeable areas, and is wide in actual application prospect.

The invention discloses waterborne polyurethane emulsion for making a waterproof strip. The emulsion comprises waterborne polyurethane and water according to the mass ratio of 0.5-0.9 to 1, wherein the waterborne polyurethane comprises the following components in percentage by weight: (a) 8-50% of diisocyanate, (b) 25-80% of polyhydric alcohol, (c) 0-10% of non-hydrophilic chain extender, (d) 0.5-15% of hydrophilic chain extender, and (e) 0-8% of active hydrogen-containing chain extender; the total weight percentage of the components is 100%; and the molar ratio of isocyanate group NCO to hydroxyl group OH in the components of the waterborne polyurethane is 2-5 to 1. The waterborne polyurethane emulsion does not contain or only contains a very small amount of volatile organic solvent, has the solid content of 25-50%, is lower in viscosity and can be used for making the waterproof strip after high-speed film coating and curing; and the waterproof strip has the characteristics of high bonding degree, high strength, soft bonding part, good waterproof and moisture-permeable performance and the like.

The invention discloses a waterproof and moisture permeable type thermoplastic polyurethane film and a preparation method thereof. The waterproof and moisture permeable type thermoplastic polyurethane film is prepared from the following components in percentage by weight: 80-85 percent of thermoplastic polyurethane, 8-10 percent of a slipping agent and 7-10 percent of a Matt agent, wherein the thermoplastic polyurethane is prepared from the following raw materials in parts by weight: 58-63 parts of poly(tetramethylene ether glycol), 30-35 parts of toluene diisocyanate, 5-8 parts of 2-ethoxyethyl acetate and 1-3 parts of dibutyl tin diacetate. By virtue of the mode, the waterproof and moisture permeable type thermoplastic polyurethane film is excellent in waterproof and moisture permeable performance, is capable of preventing permeation of water drops and ensuring free penetration of water vapor and can be used in a bad environment.

The invention discloses a surface layer polyurethane resin for waterproof and moisture permeable synthetic leather and a preparation method of the polyurethane resin. The surface layer polyurethane resin for the waterproof and moisture permeable synthetic leather is made from raw materials comprising polyol, chain extenders, a tri-functionality compound, diisocyanate and a sealing agent. The polyol contains polyol A and polyol B in a molar ratio of 1:1-1:3, wherein polyol A is selected from one or more of polytetramethylene ether glycol and polytetrahydrofuran propylene epoxide polyether diols, and the polyol B is selected from one or more of polytetrahydrofuran epoxyethane polyether diols, propylene epoxide epoxyethane polyether diols and polyepoxide glycol; the chain extenders comprise a dihydroxyl chain extender and a diamino chain extender; the tri-functionality compound is a trihydroxy compound; and the blocking agent is a monoamine silane coupling agent. The waterproof and moisture permeable polyurethane synthetic leather disclosed by the invention not only has excellent waterproof property and moisture permeability, but also has excellent wear resistance.

The present invention provides a waterproof breathable antibacterial thermoplastic polyurethane elastomer and a preparation method thereof. The thermoplastic polyurethane elastomer is prepared from the following main components by weight: 40-50 parts of polymeric polyol, 30-40 parts of isophorone isocyanate, 10-15 parts of 1,4-butanediol, 10-15 parts of nano ZnO-modified dihydroxy polydiphenylsiloxane and 5-10 parts of hydroxyethyl acrylate. The present invention uses a mixture of fluorine-containing polyether glycol and adipic acid 1,4-butanediol adipate diol as the polymeric polyol; the synergic effect of the two improves the water and oil repellency of the target product; while dihydroxy polydiphenylsiloxane and hydroxyethyl acrylate supplemented with nano ZnO increase the antibacterial properties of the thermoplastic polyurethane elastomer, and endow the elastomer with good mechanical properties.

The invention relates to anti-creasing, waterproof and moisture-permeable pearly-luster polyurethane synthetic leather. The synthetic leather comprises a base cloth layer, a middle layer and a surface layer, wherein a modifying additive is used in the surface layer for modification and comprises raw materials in parts by weight as follows: 0.5-1 part of tannic acid, 1-2 parts of mica powder, 0.5-1 part of citric acid, 4-8 parts of polyethylene glycol, 4-8 parts of glass fiber, 2-4 parts of sisal fiber, 2-4 parts of sorghum straw, 0.2-0.5 parts of a silane coupling agent KH550, 3-6 parts of triisopropanolamine, 25-50 parts of olive oil and 0.5-3 parts of sodium chloride. The anti-creasing, waterproof and moisture-permeable pearly-luster polyurethane synthetic leather has the advantages that the synthetic leather does not wrinkle and does not have creases after being bent, the camber is good during lasting for shoemaking, the bent part of a shoe is shaped well, the polyurethane synthetic leather has high physical mechanical strength and good durability, and shoe products made of the polyurethane synthetic leather have good anti-creasing performance, do not have creases and are comfortable.

The invention relates to a method for preparing windproof moisture-penetrable wool polyester viscose gabardine, which comprises the following steps of: preparing a high-density twill base fabric from wool polyester viscose blend fibers, performing waterproof finish on the base fabric by using a micro-molecular waterproof agent, and sequentially coating a microporous polyurethane adhesive with the pore diameter of between the diameters of water drop molecules and water molecules on the fabric twice through a microporous wet coating. Therefore, the prepared wool polyester viscose gabardine fabric has the advantages of a wool fabric, a polyester fabric and a viscose fabric, namely soft color and handfeel, stiff and smooth and strong feeling, ultra-high tearing strength and windproof and moisture-penetrable performance, and capability of well meeting the requirement of the market on the windproof moisture-penetrable fabric.

The invention provides waterproof and moisture-permeable type polyurethane, which is prepared from the following raw materials in parts by mass: 110 to 150 parts of polyhydric alcohol, 45 to 60 partsof diisocyanate, 10 to 15 parts of fluorine-containing dihydric alcohol, 3 to 8 parts of fluorine-containing monohydric alcohol, 0.1 to 0.3 part of an organic metal catalyst, 7 to 10 parts of a hydrophilic chain extender, 5 to 8 parts of a neutralizer, 3 to 5 parts of a post-chain extender and 500 to 700 parts of water. According to the invention, polyhydric alcohol and diisocyanate are taken as main bodies, fluorine-containing dihydric alcohol is utilized to change the interface state of the material and improve the water resistance and moisture permeability, fluorine-containing monohydric alcohol is utilized to play a waterproof role in chain segments, and under the combined action of auxiliaries such as an organic metal catalyst, a hydrophilic chain extender and the like, the water resistance and moisture permeability are further improved. The embodiment shows that the polyurethane disclosed by the invention has the water pressure resistance of 78-88 KPa, the moisture permeability of 6.8-8.2 kg/m <2>/d and the air permeability of 5.7-6.3 mm/s.

The invention belongs to the technical field of thermoplastic polyurethane elastomers, and particularly relates to a photochromic thermoplastic polyurethane elastomer material for a waterproof and moisture-permeable film, and a preparation method thereof. The material is prepared from, by weight, 55-65 parts of polymer diol, 25-35 parts of diisocyanate, 7-12 parts of a chain extender, 0.01-0.03 part of a catalyst, 0.1-2 part of a photosensitive auxiliary agent, and 1-10 parts of a functional filler. The photochromic thermoplastic polyurethane elastomer material for the waterproof and moisture-permeable film has excellent mechanical properties, the waterproof and moisture-permeable rate of the prepared film is greater than 10000 g/m<2>/24h, the hydrostatic pressure resistance of the prepared film is greater than 10000 mmH2O, the film can be changed from colorless to colored under the irradiation of ultraviolet rays with certain wavelength, and then the film is changed from colored to colorless after being irradiated by visible light. The material can be used as a functional film material in the fields of clothing, shoe material bags and suitcases and the like, and has wide application prospects.

The invention provides an acrylates waterborne coating gum, belonging to the technical field of textile printing and dyeing agents. The acrylates waterborne coating gum mainly comprises the following components by mass percent: 5-10% of ethyl methacrylate, 10-20% of polyacrylic ammonia ester, 1-3% of acrylamide, 5-15% of methacrylic acid dimethyl ammonia ethyl ester, 5-10% of acetone, 1-2% of a conditioning agent and the balance of a diluent. The acrylates waterborne coating gum is good in waterproof property and moisture permeability, soft, wear resistant and low temperature resistant; and a compact firm film can be formed on the surface of the textile, so that the adhesive property is high; and the utilization rate of the raw materials is high, and the cost is relatively low.

The invention relates to a waterproof and moisture permeable cloth with a three-dimensional structure, a production method and a wall structure. The waterproof and moisture permeable cloth, the production method and the wall structure can be applied to wall construction and wall buildings, meanwhile, a protection material of wall construction and the wall structure and a manufacturing technology process and method of the protection material are included. The waterproof and moisture permeable cloth with the three-dimensional structure comprises a waterproof and moisture permeable cloth body, the waterproof and moisture permeable cloth body comprises a first non-woven cloth layer, a waterproof and moisture permeable functional layer and a second non-woven cloth layer, and elastic bulges arearranged outside the waterproof and moisture permeable cloth in an array mode; and construction is more convenient, and the labor cost and material cost are reduced.

The invention relates to a graphene polymerization nanometer energy heating sheet and a preparation method thereof. The graphene polymerization nanometer energy heating sheet comprises a fiber composite fabric 1, a heating filament and a fiber composite fabric 2 from inside to outside, wherein the heating filament is embroidered on the fiber composite fabric 1 in a circuitous winding shape througha computer embroidery mode, the first fiber composite fabric is tightly connected with the second fiber composite fabric in a gluing mode, and the heating wire is clamped between the first fiber composite fabric and the second fiber composite fabric. According to the graphene polymerization nanometer energy heating sheet and the preparation method thereof, the structure design is reasonable, theheating effect is good, the heat conduction speed is high, the temperature rise is rapid, the electricity is not conducted, the service life is long, water, electric shock and fire are prevented, thesafety is high, far infrared waves and negative oxygen ions are released, radiation is avoided, human health is facilitated, the preparation method is simple, the flexibility is high, and the application prospect is good.

The invention discloses a washable waterproof moisture-permeable foam adhesive laminated fabric and a preparation method thereof. The laminated fabric comprises a modified fabric, a foam adhesive anda waterproof film from bottom to top, the modified fabric is prepared from a cotton fabric, sodium hydroxide, oxalic acid, a first modifier and a second modifier; wherein the foam glue is obtained byfoaming a foaming agent; the waterproof membrane is prepared from a pretreatment membrane, polydimethylsiloxane and cyclohexane; the pretreatment film comprises a first waterproof layer and a second waterproof layer from bottom to top. The invention discloses a washable waterproof moisture-permeable foam adhesive laminated fabric and a preparation method thereof. The preparation method is simple in process operation and reasonable in component proportion, the waterproof film with hydrophobic, waterproof and moisture-permeable performance is attached to the surface of the modified fabric through a foam glue attaching method, and the prepared attached fabric has excellent waterproof and moisture-permeable performance, high hydrophobic performance, excellent washing resistance and high practicability.

The present invention relates to the field of materials, particularly to bacterial fibers obtained by changing bacterial form, further to recombinant bacterial cells producing bacterial fibers through genetic molecule operation. The present invention further relates to a method for spinning by using the bacterial fibers, and the obtained textile. According to the present invention, compared with the existing natural fibers, the bacterial fibers of the present invention have advantages of short production cycle, low labor cost and low production cost; compared with the artificial fibers, the bacterial fibers of the present invention have advantages of environmental protection, degradability and the like of the natural fibers; and the bacterial fibers adopted as the textile material have advantages of gloss, softness, ultra-high density, light weight, good water resistance and good moisture permeation, good perspiration wicking action, good warm keeping property, good wear resistance, high cleaning ability, high stain removing ability and the like, and are ultra-fine fibers.

The invention discloses a thermoplastic polyurethane film and a preparing method thereof. The thermoplastic polyurethane film is prepared from, by weight, 80-85 parts of thermoplastic polyurethane, 8-10 parts of slipping agent and 7-10 parts of matt agent. Thermoplastic polyurethane is prepared from 40-50 parts of polytetramethylene ether glycol, 25-30 parts of composite diisocyanate, 5-8 parts of ethylene glycol monoethyl ether acetate, 1-3 parts of dibutyltin diacetate and 5-8 parts of styrene-acrylonitrile-glycidyl methacrylate. By adding composite diisocyanate, regulating the ratio of components in composite diisocyanate, utilizing the synergistic effect of the two components and adding styrene-acrylonitrile-glycidyl methacrylate, the thermoplastic polyurethane film with high corrosion resistance and weather resistance is prepared.

The invention relates to a waterproof and moisture-permeable film and preparation and application thereof. The moisture-permeable film is prepared by the steps that in PU moisture-permeable pulp, polyoxyethylene (PEO) is drawn into superfine fibers through an electrostatic spinning technology and the superfine fibers are implanted therein, water-soluble PEO is dissolved out through water washing after film forming and attaching, microporous channels are formed in the film, and the microporous waterproof and moisture-permeable effects are achieved. Compared with a PU film, the moisture permeability of the novel waterproof and moisture-permeable film is improved by 30%-80%, the strength is improved by 100%-150% compared with an electrostatic spinning film, and the attaching performance and the subsequent processability are better.