109results about How to "Good moisture permeability" patented technology

The invention belongs to the technical field of composite fiber materials, and relates to a functional thermal management fabric, in particular to a phase change microcapsule doped flexible cooling fiber fabric and a preparation method thereof. The fabric has a controllable double-layer structure and is formed by assembling nanofibers and micro-nanofibers doped with a large number of phase change microcapsules. Wherein the micro-nano fiber layer has relatively high sunlight reflectivity and atmospheric window wave band emissivity, and shows an excellent radiation cooling effect; the microcapsule content of the nanofiber layer doped with a large amount of phase change microcapsules is not less than 10 wt%, and the nanofiber layer has no rupture phenomenon, has high heat storage capacity, not only makes up for the deficiency of radiation cooling capacity, but also effectively slows down temperature fluctuation. The radiation cooling technology and the phase change latent heat technology are combined, so that the long-time temperature control performance of the fabric is realized, and the thermal shock resistance is enhanced. In addition, the fabric also has excellent mechanical property, flexibility, washability, air permeability, moisture penetrability and sunscreen property.

The invention relates to a flexible electrochemical pH sensor as well as a preparation method and application thereof. Wherein the flexible electrochemical pH sensor comprises a flexible nanofiber substrate as well as a working electrode and a reference electrode which are arranged on the surface of the flexible nanofiber substrate at an interval, the working electrode comprises a first working part and a first wire part connected with the first working part, and the first working part is provided with a polyaniline sensitive layer. The flexible electrochemical pH sensor has the characteristics of high sensitivity, good flexibility and good air and moisture permeability, can be tightly attached to the surface of skin to monitor the pH value of body fluid, and is high in monitoring accuracy and simple in manufacturing method.

The invention provides a polyvinylidene fluoride-based nanofiber yarn wave-absorbing fabric as well as a preparation method and application thereof, and belongs to the technical field of preparation of wave-absorbing composite materials. The preparation method comprises the following steps: preparing nanofiber yarns or nanofiber core-spun yarns by adopting a conjugate electrostatic spinning technology, directly adding a conductive substance into a spinning solution to form conductive nanofibers, and further coating the nanofiber yarns or the nanofiber core-spun yarns with a PDA shell layer to improve the wear resistance and reduce silver nanoparticles in situ; finally, the yarns are woven into fabric through a weaving or knitting technology, and the fabric is applied to the fields of buildings, electromagnetic protective clothing, flexible electronics and the like. Compared with an existing microwave absorbing material, the fabric-based material is light in weight and good in mechanical flexibility and processability. Fabrics formed of nanofiber yarns or nanofiber core spun yarns facilitate the induction of interfacial polarization and multiple reflections, and can deeply design material properties. The material provided by the invention has better wear resistance, wearability and microwave absorption performance, and is suitable for actual production and application.

The invention discloses an anti-ultraviolet waterproof fabric for a casual cap, belongs to the technical field of fabric processing, and is used for solving the technical problem that the waterproof performance and the anti-ultraviolet performance of a fabric for a cap in the prior art need to be further improved. The inorganic cross-linking agent comprises the modified polyurethane layer, the anti-ultraviolet hydrophobic layer and the moisture-permeable lining layer, amino on the surface of the inorganic cross-linking agent serves as a cross-linking group to promote cross-linking of polyurethane chain segments, and the ultraviolet protection effect of the inorganic cross-linking agent and the anti-ultraviolet modified polyurethane and modified liquid cooperate to improve the anti-ultraviolet capacity of the material; the process of electrostatic spinning is promoted, the waterproof performance of the material is remarkably improved through cooperation of the hydrophobic group modified polyurethane and the modification liquid, the adsorption-transfer-desorption process of moisture is formed by the hydrophilic pore channel structure of the lining moisture-permeable layer and the external hierarchical structure, moisture discharge is promoted, and the moisture permeability of the fabric is remarkably improved.

The invention discloses a windproof and breathable composite fabric and application thereof. The windproof and breathable composite fabric is used for solving the technical problem that in the prior art, the windproof and breathable performance, the wear-resistant and antistatic performance and the washing resistance of a polyester fiber fabric need to be further improved. The preparation method comprises the following steps: putting a gray fabric into a pretreatment solution for pretreatment to obtain a pretreated gray fabric, taking modified quaternary ammonium salt as a cross-linking agent, promoting cross-linking of a polyurethane prepolymer co-blocked by modified polysiloxane and polyethylene glycol, preparing epoxy group-terminated modified polyurethane, and carrying out heat treatment to obtain the pretreated gray fabric. The modified polyurethane and the tetrabutyl titanate are dispersed and mixed in the alkaline emulsion, and the prepared finishing liquid is used for padding and modifying the pretreated gray fabric, so that the windproof and moisture-permeable performance of the composite fabric is effectively improved, and the antistatic performance, wear resistance and pilling resistance of the composite fabric are also improved.

The utility model discloses a hygroscopic warp-knitted fabric and clothes made of the hygroscopic warp-knitted fabric. The moisture-absorbing warp-knitted fabric comprises a fabric body, the fabric body is formed by knitting a guide bar GB1 and a guide bar GB2 in a warp knitting mode, yarn laying of the guide bar GB1 is moisture-absorbing yarn, and yarn laying of the guide bar GB2 is elastic yarn; the ratio X / Y of the width X formed by the open loops of the fabric body to the width Y formed by the three adjacent closed loops on one side and the horizontal distance between the open loops and the closed loops is 1 / 4-1 / 3, and the angle alpha formed by an inlet extension line and an outlet extension line of a first yarn forming loop in the fabric body ranges from 90 degrees to 160 degrees. The moisture-absorbing warp-knitted fabric and the clothes made of the moisture-absorbing warp-knitted fabric are stiff, wide and stylish and have good moisture-absorbing and sweat-releasing effects.

The invention relates to a recyclable TPEE film and a preparation method thereof. The recyclable TPEE film is prepared from the following raw materials in parts by weight: 100 parts of TPEE resin master batch, 0.5 to 2.0 parts of cross-linking agent, 1.5 to 2.5 parts of antioxidant, 0.5 to 1.0 part of tackifier and 15 to 18 parts of diatomite loaded nano titanium dioxide. The recyclable TPEE film provided by the invention has relatively high moisture permeability and tensile strength retention rate, and can be recycled.

The invention discloses a high-waterproof and high-moisture-permeability outdoor jacket fabric and a preparation method thereof, and relates to the technical field of fabrics. The preparation method comprises the following steps: step 1, preparation of the TPU film: preparing a spinning solution A and a spinning solution B containing different porous chitosan microsphere proportions; spinning the spinning solution A to obtain an inner layer; coating an aldehyde group modified porous chitosan microsphere solution on one side of the base membrane, spinning a spinning solution B on the surface of the base membrane by taking a coating surface as a receiving layer to obtain an outer layer, and drying to obtain a composite base membrane; putting the composite base membrane into a keratinase solution, and performing pretreatment; then coating a 3-sulfopropyl acrylate potassium salt mixed solution on the surface of the outer layer, and carrying out ultraviolet irradiation at room temperature; soaking in deionized water, and drying to obtain a TPU film; 2, the TPU film and the woven fabric are subjected to hot-pressing compounding, and the outdoor jacket fabric is obtained.

The invention belongs to the field of nanofiber composite fabric preparation, and provides a nanofiber high-moisture-permeability waterproof fabric with multi-stage communicated pore canals and a preparation method thereof.The fabric body comprises an outer layer, a middle layer and an inner layer, the outer layer is a pure polyester waterproof fabric subjected to waterproof finishing, the middle layer is a nanofiber membrane with the multi-stage communicated pore canals, and the inner layer is a nano-fiber membrane with the multi-stage communicated pore canals; the inner layer is a pure polyester fabric; the inner side of the outer-layer pure polyester waterproof fabric is attached to the hydrophobic polyvinyl alcohol nanofiber membrane of the nanofiber membrane with the multi-stage communicated pore channels in the middle layer through hot melt adhesive compounding, and the inner-layer pure polyester fabric is attached to the hydrophilic polyurethane nanofiber membrane of the nanofiber membrane with the multi-stage communicated pore channels in the middle layer through hot melt adhesive compounding. The middle layer of the nanofiber membrane is formed by sequentially overlapping multiple stages of nanofiber membrane layers, each stage of nanofiber membrane layer is provided with two layers of nanofiber membranes with different fiber diameters, one layer is a hydrophilic polyurethane nanofiber membrane, and the other layer is a hydrophobic polyvinyl alcohol nanofiber membrane; nanofibers of two membranes among the multistage nanofiber membrane layers and in the membrane layers are in cross lap joint to form a three-dimensional structure with multistage communicated pore channels, and the pore diameter is gradually reduced from the hydrophilic polyurethane nanofiber membrane to the hydrophobic polyvinyl alcohol nanofiber membrane. The moisture permeability is higher than 15000g / (m < 2 >. 24h), and the hydrostatic pressure is higher than 60kPa.

The invention relates to the technical field of PVB membranes, and particularly discloses a regenerated PVB membrane layer and a preparation method thereof. The regenerated PVB film layer is prepared from the following raw materials in parts by weight: 80 to 100 parts of PVB waste films, 10 to 15 parts of nano particles, 10 to 20 parts of plasticizers, 1 to 5 parts of cross-linking agents, 0.5 to 0.8 part of swelling agents and 1 to 3 parts of antioxidants, according to the regenerated PVB film layer prepared by the invention, the waste PVB film sheet is used as a raw material and is compounded with components such as the plasticizer, the cross-linking agent and the nano particles, so that the prepared regenerated PVB film layer has relatively good strength and flexibility.

The invention provides a high-moisture-permeability and high-stability humidity-sensitive polyurethane material and a preparation method thereof, and relates to the technical field of material preparation, the material architecture comprises a polyol component, an isocyanate component, a chain extender component and a functional agent component, wherein the polyol component accounts for 80-92% of the whole ingredient, the isocyanate component accounts for 3-5% of the whole ingredient, the chain extender component accounts for 2-5% of the whole ingredient, the functional agent component accounts for 5-10% of the whole ingredient, the polyol component is adaptive to different performance emphasis of packaging and spinning, the isocyanate component meets the difference of processing, environment and service life, and the functional agent component accounts for 5-10% of the whole ingredient. The chain extender component adapts to the thickness and strength requirements of a membrane material, the functional agent component aims at special environment and functional requirements, perfect matching of the material and an application scene of a target product is achieved through accurate blending of the component proportion, the adaptive scene of the humidity-sensitive polyurethane material can be greatly met, meanwhile, the function of the humidity-sensitive polyurethane material is utilized and played to the maximum extent, and the application prospect of the humidity-sensitive polyurethane material is widened. Material waste is avoided, cost is saved, and production is maximized.

The invention discloses a radiation cooling fabric with a long-time phase change heat storage function. The radiation cooling fabric comprises a porous flexible phase change film on the inner layer and a nanofiber film on the outer layer. The porous flexible phase change film comprises a phase change microcapsule, the thickness of the porous flexible phase change film is 1000-1500 [mu] m, and the particle size of the phase change microcapsule is 1-10 [mu] m; the nanofiber membrane comprises nanofibers, the length of the nanofibers is larger than 1000 microns, and the diameter of the nanofibers is 10-1000 nm. And the thickness of the nanofiber membrane is 150 to 500 [mu] m. The prepared flexible film fabric has excellent air permeability, moisture penetrability, cycling stability, thermal stability and washability, and the thermal comfort of a human body in a high-temperature environment is enhanced through the combination of radiation cooling and latent heat storage technologies.

The invention discloses a water-based bio-based high-moisture-permeability textile coating adhesive. The coating adhesive is prepared from the following raw material components in percentage by weight: 10 to 50 weight percent of water, 10 to 60 weight percent of water-based resin, 5 to 30 weight percent of biomass resin, 0.1 to 1 weight percent of solubilizer, 0.1 to 1 weight percent of cross-linking agent, 0.01 to 0.5 weight percent of foam control agent, 0.05 to 1 weight percent of sterilizing agent and 0.1 to 2 weight percent of thickening agent. The water-based bio-based high-moisture-permeability textile coating adhesive can be applied to a coating after-finishing production process of various leisure and sportswear fabrics, a biodegradable waterproof moisture-permeable coating with excellent moisture permeability is obtained, and meanwhile, a natural bio-based material is used for partially replacing a petrochemical raw material to synthesize a high polymer material, so that the water-based bio-based high-moisture-permeability textile coating adhesive has the advantages of environmental protection and environmental protection. The method has the effects of environmental protection, energy conservation and emission reduction.

The invention relates to the field of fabrics, in particular to a warm-keeping breathable double-layer fabric. Comprising a surface layer and an inner layer, the surface layer and the inner layer are connected through a connecting line, the surface layer and the inner layer are both knitted fabrics, and the surface layer and the inner layer are both composed of 20-70% of acrylic fibers, 25-80% of viscose fibers, 0-25% of spandex, 0-25% of modal, 0-25% of polyester and 0-36% of natural fibers; the natural fiber is composed of one or more of mulberry silk, sheep wool, rabbit hair, cashmere, camel hair and cotton, the inner layer and the surface layer which are obtained through mixed spinning of the acrylic fibers and the viscose fibers have good air permeability, moisture penetrability, wear resistance and heat retention property, and the inner layer and the surface layer can be stably connected through the connecting lines. The formed double-layer fabric has better heat retention property, air permeability, moisture penetrability and wear resistance, and has the advantages of better heat retention property, air permeability and wear resistance when being used for producing clothes, and the wearing comfort and durability of the clothes are improved.

The invention relates to the technical field of multi-layer fabrics, and discloses a moisture-permeable layered composite fabric and a preparation method thereof. The preparation method comprises the following steps: compounding polyvinylidene fluoride, an antibacterial agent and a solvent, and performing electrostatic spinning to obtain an inner-layer fabric; mixing an epoxy resin / waterborne polyurethane composite material with a beta-cyclodextrin / polytetrahydrofuran ether glycol compound, and performing electrostatic spinning to obtain a middle layer / inner layer composite fabric; and compounding and hot-pressing the middle-layer / inner-layer composite fabric and the outer-layer fabric to obtain the moisture-permeable layered composite fabric. The layered composite fabric has excellent waterproof and moisture permeable properties and good mechanical properties and antibacterial properties.

The invention belongs to the technical field of high polymer materials and coatings, and relates to waterborne polyurethane, an emulsion containing the waterborne polyurethane as well as a preparation method and application of the emulsion. The preparation method of the emulsion containing the waterborne polyurethane comprises the following steps: dehydrating the polytetrahydrofuran ether glycol in vacuum; then adding isophorone diisocyanate, dibutyltin dilaurate and butanone, and carrying out a heat preservation reaction to obtain a prepolymer; then adding 1, 4-butanediol, 3-dimethylamino-1, 2-propylene glycol, a defoaming agent, a dispersing agent and a flatting agent, and carrying out further heat preservation reaction; adding syringic acid and acetic acid for reaction; adding water to emulsify to obtain a waterborne polyurethane emulsion; according to the application, the emulsion is used for preparing the polyurethane moisture-permeable microporous membrane. The prepared polyurethane moisture-permeable microporous membrane has good water resistance, moisture permeability, antibacterial and antifouling properties and strength, and can meet the application requirements of multiple fields.

The invention relates to the field of total heat exchange membranes for fresh air systems, in particular to a method for preparing a nanoparticle / polymer total heat exchange membrane with the assistance of a dispersing agent. A coupling agent, a dispersing agent, a hydrophilic oligomer and the modified inorganic nanoparticles are subjected to a grafting reaction in a solution, the obtained grafted inorganic nanoparticles are dispersed in a film forming component through the dispersing agent and ultrasound, and a uniformly dispersed film casting solution is obtained; and coating on a base material and drying to obtain the nano-particle / polymer total heat exchange membrane prepared by the aid of the dispersing agent. The prepared total heat exchange membrane is high in surface nanoparticle distribution uniformity, high in air blocking performance, high in moisture permeability after being grafted with the hydrophilic polymer and improved in heat exchange efficiency, and has wide application prospects in the fields of total heat exchange for a fresh air system, air dehumidification and the like.

The invention provides a sweat-proof quick-dry textile containing a silver ion antibacterial agent and a preparation method of the sweat-proof quick-dry textile. The preparation method of the modified polyester fiber comprises the following steps: S1, blending modified titanium dioxide, modified nano-silver antibacterial powder and polyethylene glycol terephthalate I in a weight ratio of (2-3): (1-2): 15, and extruding by using a screw extruder to prepare modified master batch; s2, blending the modified master batch and the modified fiber forming resin according to the weight ratio of (2-5): 100, and spinning to obtain modified polyester fibers; and (2) blending the modified polyester fibers and cotton fibers in a weight ratio of 100: (35-45) to obtain blended yarns, and weaving by taking the blended yarns as warp yarns and weft yarns to obtain the sweat-proof quick-dry textile containing the silver ion antibacterial agent. The prepared textile is good in anti-ultraviolet, sweat-proof and quick-drying effects.

The invention discloses a seamless woven garment and a weaving method thereof, and belongs to the technical field of woven garments. The seamless woven garment is formed by compounding a seamless woven inner layer and an air layer; the yarns are formed by blending cotton fibers, chinlon, corn polylactic acid fibers, polyvinyl alcohol fibers and silk; the air layer comprises a plurality of fabric layers, latex particles located between the adjacent fabric layers and a hot-pressing composite adhesive layer; the latex particles are uniformly dispersed in the hot-pressing composite adhesive in advance, then the hot-pressing composite adhesive is coated between the adjacent fabric layers, then the fabric layers are subjected to hot-pressing compounding through hot-pressing equipment, and the operation is repeated for multiple times, so that a multi-layer fabric composite layer is obtained, and an air layer is formed. By means of the mode, the obtained seamless woven clothes have the advantages of being good in heat retention property, air permeability and moisture permeability and the like, and when the sweat of the human body is much, the clothes can rapidly absorb sweat and dissipate heat and are high in comfort degree.

The present invention relates to the technical field of layered products, specifically to a multi-layer moisture-absorbing and warm-keeping velvet comfort layer and a preparation method thereof, including forming a hemp fiber laminate; forming a hollow fiber laminate; placing the hollow fiber laminate on the hemp fiber laminate, performing a needle-punching treatment, melting in an oven, cooling and finalizing, to obtain a fiber composite layer composed of a hemp fiber composite layer and a hollow fiber composite layer; trimming the fiber composite layer and placing it in a rectangular enclosure, then pouring glue into the rectangular enclosure, and after the glue is evenly spread on the surface of the fiber composite layer, heating and curing, forming a high-elastic cotton layer on the surface of the fiber composite layer, taking out, fine trimming, and opening air holes, to obtain a moisture-absorbing and warm-keeping velvet comfort layer. The comfort layer in the present invention is a composite layered product composed of a hemp fiber composite layer, a hollow fiber composite layer and a high-elastic cotton layer, so that the comfort layer has good elasticity, excellent air permeability and warmth retention, and good antibacterial properties.

The application discloses an integrated stretchable flexible wearable biosensor and a preparation method thereof, and belongs to the technical field of electrochemical sensing.The integrated stretchable flexible wearable biosensor is wrapped by a PAN / SiO2 sweat absorption layer.The method comprises the following steps: preparing a stretchable conductive composite fiber; preparing an integrated stretchable flexible sensing fiber; preparing a PAN / SiO2 sweat absorption layer; and preparing a sensor.The conductive composite fiber in the application can maintain stable performance under multiple bending and twisting, the sensor is integrated with a flexible integrated circuit chip and a flexible power supply device to obtain a fabric sensing system, the fabric sensing system can process acquired sensor data, and the detection data can be uploaded to a mobile terminal and a cloud end in real time through Bluetooth technology, real-time monitoring and management of a health condition of the biosensor are realized, six specific biomarkers can be efficiently detected by using only 1 muL of sweat, the amount of sweat required for activating the biosensor is 1 / 3 of that of the prior art, and the fabric sensing system can easily adapt to a tensile strain caused by exercise.

The fluorine-containing polymer mixture for high moisture permeability and ultra-breathable microporous membrane is obtained by mixing a composition consisting of component A, component B, component C and component D in a non-shearing manner, wherein the mass content of each component is 50-90%, 3-25%, 0-35% and 0-3% in sequence; component A has a standard specific gravity of 2.13-2.18 g / m 3 A blend of a high molecular weight polytetrafluoroethylene homopolymer or copolymer dispersion resin and a fluorine-containing ion exchange resin, wherein the mass ratio of the fluorine-containing ion exchange resin to the high molecular weight polytetrafluoroethylene homopolymer or copolymer dispersion resin is 0.5 to 10:100; component B is a fluorine-containing alkyl acrylate monomer or a fluorine-containing alkyl methacrylate monomer or a mixture of the two with a molecular weight of less than 3000 and a melting point of less than 80°C; component C is a polyurethane acrylate prepolymer or a fluorine-free alkyl acrylate monomer or a mixture of the two with a molecular weight of less than 8000 and a melting point of less than 80°C; component D is a high temperature free radical initiator.

The invention discloses a piezoelectric film with bionic textures and a preparation method and application thereof, the piezoelectric film is formed by directionally stacking and depositing fibers with core-shell structures, the piezoelectric film has a gully-bulge alternating bionic morphology imitating human skin surface textures, and the aperture of the piezoelectric film is gradually increased from an attachment surface in the thickness direction; the fiber having the core-shell structure comprises: a core layer having a porous structure and containing modified molybdenum disulfide and polyester; the shell layer wraps the core layer, and the shell layer contains collagen; the piezoelectric film comprises a sensing unit area and a flexible connection area, the collagen crosslinking degree of the sensing unit area is larger than 75%, and the collagen crosslinking degree of the flexible connection area is 40%-55%. Under the synergistic effect of materials and structures, the piezoelectric film not only has a high piezoelectric constant, but also shows excellent mechanical properties, air permeability and moisture penetrability, and has wide application prospects in the fields of electronic skin, health monitoring and the like.

The invention relates to the field of high polymer materials, and provides a polyacrylate pressure-sensitive adhesive for lap joint of engineering geotextile and a preparation method of the polyacrylate pressure-sensitive adhesive. Wherein the dosage of each component is respectively 20-60 parts by weight of soft monomer, 2-30 parts by weight of hard monomer, 1-10 parts by weight of functional monomer, 0.1-5 parts by weight of initiator, 0.1-5 parts by weight of cross-linking agent or coupling agent, 1-30 parts by weight of tackifying aid, 1-30 parts by weight of rheology regulating additive and 20-65 parts by weight of solvent; the adhesive is prepared from acrylic acid raw materials in a specific proportion, has good brush coating and roller coating constructability, excellent base material wettability and enough strong stripping force and permanent adhesion, and does not have a disengagement phenomenon when being used for bonding geotechnical cloth for lap joint.

The present application relates to the technical field of preparation of polymer materials, and specifically to a PE / PET composite fiber material and a preparation method thereof. A PE / PET composite fiber material comprises a skin layer and a core layer, wherein the raw material of the skin layer comprises the following components in parts by mass: 20‑40 parts of a modified PE resin, 2‑8 parts of a toughening agent, and 1‑4 parts of an antioxidant; the raw material of the core layer comprises the following components in parts by mass: 30‑65 parts of a modified PET resin; wherein the modified PE resin is an amino-terminated polyether grafted polyethylene; and the modified PET resin is a polyacrylamide grafted PET. A PE / PET composite fiber material of the present application improves the problem that the water absorption and air permeability of the skin-core composite fiber cannot meet the quality improvement of non-woven fabrics, so that the PE / PET composite fiber material meets the quality requirements of moisture absorption and air permeability of non-woven fabrics.

The utility model relates to a kind of multifunctional anti-uv fabric, including woven body and single-side moisture absorption finishing layer, the woven body is formed by warp and weft interlacing, the warp and weft are all using anti-uv cool yarn and the cross-sectional shape of the anti-uv cool yarn is a cloud section of a word and forms wet guide furrow on surface, the DPF value of the warp and weft is less than 1, the single-side moisture absorption finishing layer is obtained by spraying moisture absorption finishing liquid on the outer surface of woven body and setting finishing.The utility model is endowed with good anti-uv and cool feeling by anti-uv cool yarn, and combined with the wet guide furrow and the moisture absorption gradient of the surface of anti-uv cool yarn, it is endowed with good one-way wet guide and moisture absorption perspiration performance of fabric.

This invention discloses a method for manufacturing a fluorine-free water-repellent upper. The method includes: providing a waterproof layer woven from yarn treated with fluorine-free waterproofing; providing an inner lining layer knitted from cotton blend yarn; sewing multiple deformation-resistant yarns to the surface of the waterproof layer, extending the yarns from the forefoot area to the heel area; overlapping and fixing the waterproof layer and the inner lining layer to form the upper body; and fixing a waterproof and breathable membrane to at least a portion of the outer surface of the waterproof layer to obtain the finished upper. This invention solves the problems of environmental pollution, performance degradation after washing, and easy pore expansion and water seepage in existing water-repellent upper treatments by combining the sewing and fixing of deformation-resistant yarns with fluorine-free waterproofing. It has the advantages of being environmentally friendly, providing long-lasting water repellency, and having strong deformation resistance.

The utility model discloses an invisible paste for lifting buttocks, which relates to the technical field of buttocks lifting and comprises a white easy-to-tear opening, and a PET (polyethylene terephthalate) film is adhered to the lower surface of the white easy-to-tear opening. The utility model solves the problem that the hip lifting trousers in the market at present are generally made of cloth with strong flexibility and are tightened on the body through the cloth to achieve the effects of abdomen curling and hip lifting. However, the body-building clothes bring discomfort to people, and the elasticity of the clothes can be lost along with the use time. The tight body-building clothes can solve the problem that some inconvenience is caused when a woman needs to go to the toilet, can modify the hip curve of the woman with flat, small and non-hip hips, increases the self-confidence of the woman, is comfortable to wear, not only endows the hip-lifting body-building system with more sense of reality, but also improves the body-building effect of the woman. The invisible buttock lifting patch is simple in structure, convenient to use, capable of avoiding the problem that the invisible buttock lifting patch is excessively heavy and inconvenient to wear due to the fact that the invisible buttock lifting patch is completely made of silica gel, light and thin and well solves the invisible problem.

This invention discloses a motion-responsive waterproof and breathable crimped fiber membrane, its preparation method, and its applications. The fiber membrane is a composite fiber membrane composed of nanofibers, which include polyurethane, a low-elasticity fluorine-free polymer, and polydimethylsiloxane. The fiber membrane has a three-level elastic structure. In its unstretched state, the fiber membrane has a first average pore size of 0.3 μm ≤ D1 ≤ 1.2 μm and a first moisture permeability. When subjected to a tensile strain of 20%–50%, it has a second average pore size of 1.2 μm < D2 ≤ 2.5 μm and a second moisture permeability, with the second moisture permeability being higher than the first. This invention achieves, for the first time, a direct response of the fiber membrane to mechanical motion, i.e., waterproof in static conditions and highly permeable in dynamic conditions. It possesses advantages such as being fluorine-free and environmentally friendly, dynamically breathable, and highly resilient, and has broad application prospects in outdoor sportswear, medical protective equipment, aerospace, and other fields. The preparation of this fiber membrane requires no post-processing or additional processing steps, and the process is simple and highly controllable.

The invention discloses menstrual period physiology underpants cloth and a manufacturing process thereof, the menstrual period physiology underpants cloth comprises first bamboo fiber towel cloth, second bamboo fiber towel cloth and third bamboo fiber towel cloth, the first bamboo fiber towel cloth is uniformly soaked with an anti-mildew antibacterial agent; the second bamboo fiber towel cloth is uniformly soaked with an anti-mildew antibacterial agent, and the second bamboo fiber towel cloth is adhered to the back surface of the first bamboo fiber towel cloth; and the TPU middle permeable membrane is adhered to the back surface of the second bamboo fiber towel cloth. The menstrual period physiology underpants fabric is simple in structure, soft in overall texture, good in body feeling, good in moisture permeability, moisture absorption and leakage prevention performance, antibacterial, capable of removing peculiar smell and capable of being recycled.