10 results about "Electrospun nanofibers" patented technology

The application belongs to the technical field of new materials in textile engineering, and provides an antibacterial aromatic microfiber suede fabric and a preparation method thereof.The preparation method comprises the following steps: placing a fabric into a 2-methylimidazole solution for immersion treatment; after the immersion treatment is completed, a zinc source solution is added into the 2-methylimidazole solution for reaction to obtain a fabric with MOF nanorods on the surface; electrospun nanofibers loaded with aromatic essential oils are deposited on the fabric with MOF nanorods on the surface to obtain an antibacterial aromatic textile base cloth layer; and the antibacterial aromatic textile base cloth layer is bonded on a microfiber suede layer to obtain the antibacterial aromatic microfiber suede fabric.The antibacterial aromatic microfiber suede fabric prepared by the application has good antibacterial performance and aromatic release function when applied to automobile interior materials.

This invention discloses a glycosylated carbon dot functionalized fiber-gel composite dressing and its applications, belonging to the fields of functional materials and biomedicine. First, this invention develops a novel glycosylated carbon dot CS-ACD using a one-step hydrothermal method. This CS-ACD exhibits significantly enhanced antibacterial and anti-inflammatory activity, primarily killing bacteria through a membrane-dissolving mechanism. It also promotes the transformation of macrophages from the pro-inflammatory M1 type to the anti-inflammatory M2 type, thereby reducing the expression and secretion of inflammatory cytokines. Furthermore, this invention combines electrospun nanofibers loaded with this CS-ACD with an in-situ sprayable fibrin gel to prepare an innovative "sandwich" structured fiber-gel dressing. In an experimental mouse model of infected wounds, this dressing effectively reduces bacterial load, regulates the immune response, alleviates wound inflammation, and promotes collagen deposition and angiogenesis, ultimately accelerating wound healing and tissue repair.

The application discloses a fluorine-free waterproof and moisture-permeable electrostatic spinning nanofiber membrane and a preparation method thereof, relates to the technical field of polymer materials, and is prepared through coaxial electrostatic spinning of a spinning solution, wherein the spinning solution comprises polyurethane solution and organic polysiloxane solution in a mass ratio of 100:(5-7); the polyurethane solution comprises 5-30 parts of polyurethane and 70-95 parts of solvent A by weight; the organic polysiloxide solution comprises 1-30 parts of thermosetting organic polysiloxane, 0-10 parts of a crosslinking agent and 60-99 parts of solvent B by weight; and the thermosetting organic polysiloxane is hyperbranched polydimethylsiloxane with a vinyl group or an epoxy functional group at the end. The fluorine-free waterproof and moisture-permeable membrane of the polyurethane-silicone core-shell nanofiber with polyurethane as the core and crosslinked silicone resin as the shell is prepared through coaxial electrostatic spinning and in-situ drying and crosslinking, has the advantages of small fiber diameter, large specific surface area, small pore size and high porosity, and can effectively prolong the waterproof and durable effect.

A method for detecting aflatoxin (AFB1) by using an electro-spun nano-fibre membrane loaded with NH2-MIL-53(Al) comprises; dropwise adding a sample solution to be detected to the loaded membrane; incu

A solid-state supercapacitor [100] is composed of a solid-state electrolyte [106] made of an electrospun nanofiber sheet impregnated with a salt; and a symmetric pair of electrode sheets [102, 104]. The solid-state electrolyte [106] is sandwiched between and in contact with the symmetric pair of electrode sheets [102, 104] such that the solid-state electrolyte separates the electrode sheets from each other. Preferably, each of the symmetric pair of electrode sheets [102, 104] is composed of commercial activated carbon on a graphite substrate, and the salt is preferably a salt of Li, Cs or Rb, such as LiCl.

The application discloses an antioxidant electrostatic spinning mask cloth and a preparation method thereof, and belongs to the technical field of electrostatic spinning nanofiber membrane materials. The method comprises the following steps: (1) washing cuttle ink sacs, collecting cuttle ink, adding deionized water, mixing and stirring for 4-8 hours, centrifugally collecting melanin precipitates, and then freezing and drying after washing to obtain cuttle melanin particles, wherein the average particle size of the cuttle melanin particles is 100-200 nm; (2) dissolving collagen peptide, the cuttle melanin particles prepared in step (1) and polyvinyl alcohol in an acetic acid solution, ultrasonically homogenizing to obtain a spinning liquid, and then performing electrostatic spinning on the spinning liquid, and finally vacuum drying to obtain the antioxidant electrostatic spinning mask cloth. The method is simple in process, and the prepared product, the mask cloth, is excellent in mechanical properties, and good in moisturizing and antioxidant effects.

A low loss flexible copper clad laminate (FCCL) for millimeter wave transmission with a dielectric layer comprising an electrospun nanofiber network of cyclized polyacrylonitrile, formed between conducting copper layers. The cyclized polyacrylonitrile has improved thermal stability over its uncyclized form while maintaining a higher porosity, which further enables the infusion of a second resin of low dielectric constant and low dielectric loss to increase compatibility between the conducting copper layers and nanofibers, and the compatibility between nanofibers, which further enhances the dielectric properties and structural integrity of the FCCL. The FCCL, apart from its low dielectric constant, has performances comparable with existing ultra-low loss materials but with lower costs, and can be utilized as a passive RF component in high-frequency transmission devices including flexible antennas and transmission lines, decreasing the transmission loss due to Joule heating and signal lagging, specifically suited for various high frequency signal transmission applications.

The present application belongs to the technical field of microbial carrier preparation, and discloses a method for preparing a porous electrospun nanofiber biological carrier by an organic vapor swelling method. The method prepares nanofibers by an electrospinning technology, and then performs swelling treatment by using organic vapor to form a porous structure, thereby increasing the specific surface area and adsorption capacity of the fibers. By controlling the swelling conditions, the porous structure and pore size can be accurately regulated to meet different application requirements. The porous electrospun nanofiber biological carrier has good biocompatibility and biological activity, and is suitable for fields such as biological culture, pollution control, drug delivery and biosensing. The method is simple to operate and can be prepared on a large scale, and has a broad application prospect. The implementation of the present application not only provides a new method for preparing porous electrospun nanofibers, but also provides a new idea for the development of the field of biological materials.

The application belongs to the technical field of non-woven fabrics and composite materials, and discloses a high-barrier protective clothing, a fabric and a fabric preparation process thereof.The fabric is a three-layer composite structure: the outer layer is a polyethylene / ethylene-vinyl alcohol flash spinning fiber web, a mixed solvent containing dichloromethane and 2,3-dihydrodecafluoropentane is used, and the web is collected under a specific laminar flow distance to ensure uniformity and strength; the middle layer is a polyurethane electrostatic spinning nanofiber loaded with nano-silver, which provides dense barrier and antibacterial functions; and the inner layer is a polyester spun-bonded fabric with plasma-grafted polyethylene glycol, which provides hydrophilic comfort.The three layers are hot-pressed and compounded and subjected to hydrophobic finishing.The application synergizes materials and processes to make the fabric have high hydrostatic pressure, high air permeability, durable antibacterial properties and good wearing comfort, and is suitable for high-end protective clothing and other fields.

The application discloses a hybrid structure electrostatic spinning friction nanogenerator in the technical field of nanogeneration, and a preparation method and a spinning device thereof, and aims to solve the problems that part of electrostatic spinning nanofibers are prone to delamination in the application process in the prior art, and the TPU / CB bead string structure nanofiber and PVDF-TrFE nanofiber blended fiber membrane are prepared in batches by using a special free liquid surface spinning device. The application can effectively improve the shortcoming that the PVDF and copolymer nanofiber are prone to delamination in the use process, and the existence of the bead string structure is also beneficial to improving the air permeability and surface roughness of the membrane and improving the electric output property of the triboelectric nanogenerator.