200results about "Protein coatings" patented technology

According to the technical scheme, the copper-doped lasting antibacterial fresh-keeping material comprises a base body, an antibacterial nanofiber and copper ion loaded antibacterial hydrogel layer and a surface coating, the antibacterial nanofiber and copper ion loaded antibacterial hydrogel layer comprises antibacterial nanofibers and copper ion loaded antibacterial hydrogel, and the surface coating is coated with the antibacterial nanofibers and the copper ion loaded antibacterial hydrogel. The surface coating comprises microcapsules for contactable food products; the preparation method comprises the following steps: preparation of the copper-tannic acid coordination compound, preparation of the antibacterial nanofiber layer, preparation of the copper ion loaded antibacterial hydrogel, preparation of the substrate, interlayer compounding process, preparation of the sustained-release microcapsule coating, crosslinking and post-treatment. The humidity-responsive on-demand release of copper ions of the fresh-keeping material is realized, the antibacterial and fresh-keeping effects are good, the safety is high, and the environment-friendly effect is realized.

The invention discloses a straw fiber-based antibacterial mulching film with temperature and humidity response performance and a preparation method, and belongs to the technical field of agricultural mulching films, the straw fiber-based antibacterial mulching film with temperature and humidity response performance comprises a bottom film layer, a slow release layer and a barrier layer in sequence from bottom to top; the slow-release layer is obtained by coating the base film layer with a mixed solution of acetic acid, a bactericide, gelatin and a plasticizer; the barrier layer is obtained by coating palm wax emulsion on the surface of the slow release layer. According to the invention, palm wax, a bactericide (carbendazim), gelatin and a wheat straw fiber-based mulching film are combined to construct the wheat straw fiber-based temperature and humidity response type bacteriostatic mulching film. The straw fiber-based antibacterial mulching film can respond according to the change of environmental temperature and humidity to realize accurate release of pesticides, so that diseases are accurately regulated and controlled.

The invention discloses a protective coating treating agent, a protective coating treating fluid, modified forage and a preparation method and application thereof, and belongs to the technical field of ecological engineering. The protective coating treating agent comprises a first component, a second component and a third component in a mass ratio of 10: (0.5-2.5): (1-3), the first component is a natural polymer film-forming material; the second component is a plant-derived functional anti-degradation agent; and the third component is a natural mineral particle reinforcing agent. The protective coating treating agent containing the components is prepared into a protective coating treating fluid, and then the protective coating treating fluid is coated on the surface of forage to form a protective coating, so that the aging resistance of the straw checks in environments of high temperature, strong ultraviolet rays, sand erosion and microbial erosion can be remarkably improved, the service life of the straw checks is prolonged, and the service life of the straw checks is prolonged. And the operation and maintenance cost of ecological restoration engineering is reduced. The straw checkerboard with the protective coating can be widely applied to ecological engineering construction such as treatment of railways, highways and sand source areas in arid and windy sand areas.

To provide a water-absorbing and quick-drying property-imparting agent capable of easily imparting a water-absorbing and quick-drying property to various materials or articles in a simple process, and a method capable of easily imparting a water-absorbing and quick-drying property to a predetermined material or article.SOLUTION: There are provided: a water-absorbing and quick-drying property-imparting agent containing modified fibroin as an active ingredient; and a method for imparting water-absorbing and quick-drying property to an article, comprising a step of incorporating modified fibroin into the article.SELECTED DRAWING: None

The present invention relates to a freeze-drying process suitable for bioactive coatings, including the following factors: coating pre-freeze treatment: excipient and auxiliary material solution; pre-freezing part: pre-freezing temperature, shelf temperature before feeding, pre-freezing time. Freeze-drying time part: the fastest temperature point of primary sublimation drying, primary sublimation high-speed section drying time, primary sublimation slow section drying time, desorption drying time. Vacuum degree part: primary sublimation air entrainment amount. The method of the present invention is simple, the process is mature and feasible, and the coating product after freeze-drying has a regular appearance and extremely low water content. It overcomes the shortcomings of the existing bioactive coating preparation technology, meets the needs of actual applications, can replace the drying process in the preparation process of most bioactive coatings, ensure the biological activity of the coating, extend the service life of the coating, help the industrial application of the coating, and provide strong support for related research.

According to the anti-ultraviolet aging coating for the outer wall of the pipeline, the outer wall of the pipeline is coated with modified paint to form the anti-ultraviolet aging coating, and the coating thickness is 1-2 mm; the modified paint comprises the following raw materials in parts by weight: 35-40 parts of epoxy resin, 4-7 parts of an auxiliary agent, 8-12 parts of a curing agent and 30-35 parts of an acetone solvent. According to the anti-ultraviolet aging coating disclosed by the invention, the epoxy resin, the auxiliary agent, the curing agent, the reinforcing agent based on nanocellulose modification and the modifier are blended, and the modified paint prepared by matching and coordinating the raw materials is brushed on the outer wall of the pipeline, so that the prepared coating product has excellent impact resistance and adhesive force performance; the performance of the product is coordinated and balanced, and the anti-ultraviolet stability effect of the product is remarkable.

The invention relates to the technical field of medical textile materials, in particular to an anti-static medical fabric and a preparation method thereof.The anti-static medical fabric comprises an outer layer, a middle layer, an inner layer and carbon fiber grids embedded into the outer layer and the inner layer, the outer layer is made of nanofibers prepared by electrostatic spinning and comprises polyvinylidene fluoride, an F-ZnO / TiO2 composite antibacterial agent, carboxylated carbon nanotubes and grafted quaternary ammonium salt; the middle layer is a chitosan enhanced polytetrafluoroethylene film, and the surface of the middle layer is sequentially coated with a chitosan / silk fibroin transition layer and a polypyrrole conducting layer; the inner layer is a blend fiber fabric and comprises hollow polyester fibers, chitosan microsphere modified cotton fibers and carbon nanotube grafted polyamide fibers; the carbon fiber grids are embedded into the outer layer and the inner layer in a warp knitting mode with the density of 20-24 pieces / cm. According to the antistatic fabric, a four-stage conductive network is formed by the outer-layer carbon nanotubes, the middle-layer polypyrrole, the inner-layer grafted carbon nanotubes and the carbon fiber grids, so that the antistatic performance of the fabric is greatly improved.

A dual-modal information storage and anti-counterfeiting material, and its preparation method are provided. The dual-modal information storage and anti-counterfeiting material uses cadmium sulfide quantum dots (CdS QDs) as information storage material, and uses the controllable photocorrosion of CdS QDs to achieve dual-modal optical information storage and anti-counterfeiting applications. Firstly, the type of ligands and modification degree of CdS QDs are precisely controlled during the aqueous phase synthesise process, so as to effectively control the photocorrosion phenomenon under UV light irradiation. Subsequently, the CdS QDs are loaded in the hydrogel network, and they are also loaded on the substrates such as cloth and paper by spray coating, dip coating or 3D printing, and the information is stored by digital light patterning. Different from the photochromic function of traditional anti-counterfeiting material, the CdS QDs shows dual-modal patterning characteristics in a wide wavelength range.

The application provides a preparation method of a zanthoxylum bungeanum essential oil active coating liquid and application thereof, and relates to the field of fruit and vegetable preservation technology. The preparation method of the zanthoxylum bungeanum essential oil active coating liquid is as follows: 3.5% zein nanoparticles are prepared; 3.5% citrus pectin solution is prepared; the 3.5% zein nanoparticles are dropped into the citrus pectin solution to obtain zein-citrus pectin Pickering emulsion; zanthoxylum bungeanum essential oil and 3.5% zein-citrus pectin Pickering emulsion are mixed to obtain zanthoxylum bungeanum essential oil Pickering emulsion; carboxymethyl cellulose sodium is dissolved in deionized water; glycerol is added; the zanthoxylum bungeanum essential oil Pickering emulsion is added under room temperature, and standing and defoaming are conducted, so that the zanthoxylum bungeanum essential oil active coating liquid is obtained. The application is favorable for inhibiting the spoilage bacteria of fresh red peppers, delaying the aging time of the peppers, and prolonging the preservation period of the peppers.

The invention is directed to an aqueous binder composition for MMVF fibres comprising one or more protein(s) of non-plant origin; one or more saccharides, a crosslinker comprising at least two azetidinium functional groups and at least one hydrophobic agent. Methods for producing MMVF fibres, MMVF fibre products and uses are also disclosed.

The invention discloses a preparation method of a breathable antibacterial composite fabric, and particularly relates to the field of layered fabrics. The method comprises the following steps: by taking poplar fallen leaves as a raw material, crushing, immobilizing by glutaraldehyde, and sequentially treating by pectinase, cellulase and alkaline hydrogen peroxide to form an immobilized cell template with a cell wall microstructure; then, a mixed solution of chitosan, an antibacterial agent and a cross-linking agent permeates into gaps of the template, the antibacterial agent is covalently grafted to the chitosan through a Michael addition reaction, the cell template is removed through EDTA dissolution, and a porous antibacterial layer is reserved; and finally, compounding the keratin microspheres and the silk fibroin-hydroxyethyl methylacrylate copolymer, coating two sides of the antibacterial layer with the compounded keratin microspheres and silk fibroin-hydroxyethyl methylacrylate copolymer, and initiating crosslinking by ultraviolet light to form a compact and breathable microporous coating layer. By means of bionic structure design and a covalent grafting technology, efficient unification of the antibacterial function and the air permeability is achieved.

The invention provides a sealing coating, a preparation method thereof, a coating and application thereof, and belongs to the technical field of sealing materials. Pits formed by interweaving the surface fibers can be filled with the filler, so that the adhesive lines are firmly adhered; the filler has heat resistance and has an anti-sticking effect; the coupling agent modified filler solution is adopted, so that the adhesion firmness of the glue line on the surface of the material can be improved; the coupling agent modified sodium carboxymethyl cellulose solution is adopted, so that the hydrophilic performance of macromolecular substances can be reduced, and an adhesive is partially crosslinked under the action of the coupling agent, so that cylinder sticking is avoided; the surface of an uncoated base material adsorbs water, a water molecule film is formed on the surface, after the sealing coating is adopted, a coupling agent is in contact with the water on the surface of the base material and is hydrolyzed to generate a hydroxyl group, the hydroxyl group and a polar hydroxyl group on the surface of the base material are subjected to a condensation reaction to form a hydrogen bond or a-SiO-Me covalent bond, and the water molecule film is formed. An R group in the coupling agent can react with free hydroxyl of rubber to form a net structure, so that rubber lines are prevented from cracking and falling off.

Protein polyurethane alloys including one or more proteins dissolved within one or more polyurethanes. The protein polyurethane alloy may have one or more mechanical properties that are superior to the polyurethane in the absence of protein. The protein polyurethane alloys may be incorporated into a layered material including one or more protein polyurethane alloy layers.

The present invention discloses a flame retardant and smoke suppressing coating, and a preparation method and application thereof. The raw materials of the coating include the following components in terms of weight percentage: 2-30% gelatin, 1-5% metal oxide functionalized black phosphorus, 5-25% kosmotropic salt, 0.1-2% antibacterial agent, and the balance water; the metal oxide functionalized black phosphorus is prepared by solvent thermal reaction using black phosphorus nanosheets, cobalt salts, ferrous salts and sodium acetate as raw materials and an organic solvent as solvent, and the mass ratio of black phosphorus nanosheets, cobalt salts and ferrous salts is 2:2.5-5:2.5-3.75. The present invention enables the coating to have excellent flame retardant properties through the interaction of the components in the above contents. The limiting oxygen index of the polyurethane foam after coating modification increases from 17.5% to 32.0%; the peak heat release rate increases from 485kW / m 2 Down to 200kW / m 2 ; Peak smoke release rate from 0.30m 2 / s dropped to 0.15m 2 / s; tensile strength increased from 0.8MPa to 1.8MPa.

A bio-ink comprising: (a) at least one polysaccharide; (b) at least one structural protein; and (c) fibrinogen, wherein the polysaccharide is selected from a group consisting of Sodium alginate Chitosan, Hyaluronic acid, Gellan gum, Dextran, Agarose, Poly(ethylene glycol), Pluronic and Carrageenan and the structural protein is selected from a group consisting of Gelatin, Collagen Vitronectin, Laminins and Fibronectin.

This invention belongs to the technical field of film reinforcement agents, specifically relating to a developing reinforcement agent, its preparation method, and its application in dry-plate glass films. The developing reinforcement agent is made from alkaline gelatin, Kathon, waterborne epoxy resin, and water; the mass ratio of the alkaline gelatin, Kathon, waterborne epoxy resin, and water is 3–9:0.1–0.3:0.1–0.6:91–97. This invention uses alkaline gelatin, waterborne epoxy resin, and Kathon to form a developing reinforcement agent, which exhibits good stability and significantly slows down the degradation rate of the emulsion layer. When used in dry-plate glass films, the developing reinforcement agent also has a reinforcing effect, preventing defects in the dry-plate glass films.

The application provides a transparent fire-retardant fireproof paint and a preparation method and application thereof, and particularly relates to the technical field of fire-retardant fireproof paint. The transparent fire-retardant fireproof paint comprises, by weight fraction, 1-8 parts of water-soluble chitosan, 0.5-5 parts of gelatin, 3-10 parts of phytic acid solution, 0.1-0.8 parts of hydrophilic fumed nano-silicon dioxide, 0.1-3.0 parts of a stabilizer and 30-80 parts of water; wherein the stabilizer is a water-soluble amine compound. By introducing the water-soluble amine stabilizer into the chitosan / gelatin / phytic acid water-based transparent fire-retardant system, the low-temperature stability, compatibility and long-term storage stability of the paint system are significantly improved.

The present invention relates to a method for coating a substrate, to the coated substrate thus obtained, to a kit for coating a substrate and to the use of the coated substrate for manufacturing an article.

The invention discloses a tannic acid-assisted antifouling coating for an inner seawater system as well as a preparation method and application of the tannic acid-assisted antifouling coating. According to the invention, tannic acid is used as an anchoring part of the antifouling coating to play a good fixing role on the surface of a base material through the adsorption effect, and then a physical interval is formed between tannic acid and the active center of protease through the connection of a hydrophilic substance in the middle layer, so that the conformation change or active site blockage possibly caused by tannic acid to protease is reduced, and the anti-fouling effect of tannic acid is improved. The activity of the protease is better maintained, and meanwhile, enough sites are provided for the protease, so that the protease can be effectively fixed on the surface of a base material to form an antifouling coating. Protein components in a biofilm matrix can be effectively degraded due to existence of protease on the surface of the antifouling coating, so that adhesion of bacteria and algae is prevented, and the antifouling coating has excellent antibacterial and anti-algae performance. The preparation method is simple, convenient, rapid, low in cost and suitable for preparation of the protective coating of the marine equipment and facilities in special scenes.

This invention provides an antibacterial and antiviral fabric comprising a fabric substrate and an antimicrobial coating. The antimicrobial coating formed on the fabric substrate has an antimicrobial agent embedded or surface-adhered in a three-dimensional porous network of nano-binder particles. The three-dimensional porous network is formed by interconnecting the nano-binder particles through van der Waals forces or Coulomb forces. The antibacterial and antiviral fabric has at least 99% antibacterial efficacy while retaining physical properties comparable to uncoated fabric. This invention also provides an antibacterial and antiviral formulation and a method for preparing antibacterial and antiviral nanoparticles.

The application belongs to the technical field of food packaging materials and surface modification, and discloses a full-biobased degradable super-hydrophobic composite coating as well as a preparation method and application thereof. The composite coating comprises a first coating, which is a dry solidified layer of a composite dispersion liquid containing corn protein, inorganic nanoparticles and bacterial cellulose; and a second coating formed on the surface of the first coating, which is a solid film layer after volatilization of a solvent of a hot wax solution. The core component of the application is derived from natural biomass, which fundamentally eliminates the use of traditional paper cup plastic film coating or fluorine-containing chemicals, and realizes full-biobased, rapid degradable and environment-friendly coating. The static water contact angle of the obtained coating is greater than 150°, and the rolling angle is less than 10°, which reaches the super-hydrophobic standard. The simple solution blending and coating process provides a reliable and highly industrialized solution for the development of green paper cup products, and has a wide application prospect.

The invention relates to the technical field of pressure-sensitive membranes, and particularly discloses a pressure test color development membrane and a preparation method thereof. The pressure test color development film comprises a base material, a capsule layer and a color development layer, wherein the capsule layer and the color development layer are formed on the base material; the capsule layer is connected with the color developing layer; the capsule layer comprises a first microcapsule containing an electron donating leuco dye precursor and a second microcapsule containing an electron accepting compound. When the color development film is pressed in a pressure test, the microcapsules are broken to different degrees and release the color former and the color developing agent respectively, and after the color former and the color developing agent are in contact reaction, the structure is changed and is absorbed by the color development layer to show color. The color former and the color developing agent respectively form the capsule layer in the form of microcapsules, so that the adaptability of the pressure test color development film to the storage environment is improved, the color development concentration of the pressure test color development film cannot be reduced along with the prolonging of the storage time especially in the high-temperature and high-humidity environment, the repeatability of the test result is better, and the color development performance is stable.

The present invention relates to plant based materials, methods for their manufacture and biomaterials incorporating plant based materials.

The invention relates to an efficient bio-based fireproof heat-insulation antibacterial coating and a preparation method and application thereof.According to the system, renewable phytic acid serves as a core functional component, the phytic acid is modified through polyethylene glycol so as to optimize the compatibility and film forming stability of the phytic acid, and the coating is endowed with lasting antibacterial performance. Piperazine and 1-hydroxyethylidene-1, 1-diphosphonic acid react to prepare piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serving as a flame-retardant component, and the piperazine 1-hydroxyethylidene-1, 1-diphosphonic acid serves as an acid source / gas source synergistic unit of the intumescent flame-retardant system to promote rapid char formation and construction of an The preparation method comprises the following steps: reacting PEG modified phytic acid with piperazine hydroxyethylidene diphosphonate, introducing aerogel and gelatin, and carrying out blending dispersion and film formation to obtain the composite coating. Wherein the aerogel constructs a high-efficiency heat insulation framework by virtue of low heat conductivity, and the gelatin provides a film forming and interface bonding effect, so that the compactness and adhesive force of the coating are further improved. The coating can simultaneously realize multifunctional synergy of flame retardance, heat insulation, bacteriostasis and mildew prevention on the surface of a base material such as wood and the like.

The invention discloses a preparation method of an antibacterial and mildew-proof coating for the inner wall of a sterile bottle, which comprises the following steps: thoroughly cleaning and disinfecting the sterile bottle through ultrasonic cleaning and high-temperature steam sterilization to ensure that no microbial residue exists in the bottle; activating the inner wall of the bottle by adopting a plasma cleaning machine; then, polylactic acid modified ovalbumin is dissolved in water, a glutamine transaminase cross-linking agent and a chitosan polymer are sequentially added to prepare a modified protein solution, and the mixture not only has excellent biocompatibility and antibacterial performance, but also can effectively prevent bacteria and mould from breeding; filtering the prepared solution, injecting the filtered solution into an activated sterile bottle, uniformly covering the inner wall of the bottle with the solution by using a spin coater, and carrying out curing treatment in a constant-temperature oven to finally form an antibacterial and mildew-proof coating; according to the method, the toxicity problem caused by chemical additives is avoided, meanwhile, the stability and durability of the coating are improved, the service life of the sterile bottle is greatly prolonged, and the protection performance of the sterile bottle is enhanced.

Silk coated and / or infused performance materials, apparel, and methods of preparing the same are disclosed herein. In some embodiments, silk performance apparel includes textiles, fabrics, consumer products, and other materials that are coated with aqueous solutions of pure silk fibroin-based protein fragments having low, medium, and / or high molecular weight in various ratios.

The invention relates to a method of coating a substrate, to the coated substrate thus obtained, to a kit for coating a substrate and to the use of the coated substrate for making an item.

Disclosed in the present invention is a limiting expandable aortic valvular conduit. The limiting expandable aortic valvular conduit comprises a preliminary aortic valvular conduit attached with a collagen fiber coating, wherein the preliminary aortic valvular conduit comprises a proximal pipeline, a valve connecting conduit, and a distal conduit. Further disclosed in the present invention is a preparation method therefor. The limiting expandable aortic valvular conduit provided in the present invention is used for Bentall-type surgeries. Moreover, after the bioprosthetic valve deterioration, the limiting expandable aortic valvular conduit provided in the present invention provides the conditions for implanting a bioprosthetic valve of the same size as the original valve via an interventional approach; that is, after the biological valve deterioration, a valve of the same size as the original valve can be implanted via an interventional approach, without opening the chest of a patient to replace the biological valve of the same size.

An object of the present invention is to provide a fusion protein that can be easily used to purify and grow target cells, and to provide a biocompatible material such as chitin or chitosan that can be easily used as a cell culture surface. The present invention provides a fusion protein comprising a region consisting of at least one peptide capable of adhering to chitins, and a region consisting of at least one peptide or protein capable of adhering to cells.

The invention relates to a subarea response phase change visible cold chain packaging condensate water early warning identifier, and discloses an early warning identifier for carrying out real-time monitoring and graded early warning on condensate water formed in the cold chain transportation process of prefabricated dishes by combining a phase change moisture absorption indicating layer and a color changing agent microcapsule with a subarea response mechanism. The invention relates to a phase-change moisture-absorption and anti-migration packaging film which is characterized by comprising a food-grade high-moisture-permeability protective layer, a phase-change moisture-absorption indicating layer, a backing supporting layer and an anti-migration sealing edge, the food-grade high-moisture-permeability protective layer is attached to one side of the phase-change moisture-absorption indicating layer, and the backing supporting layer is attached to the other side of the phase-change moisture-absorption indicating layer; the anti-migration sealing edge peripherally wraps the edges of the food-grade high-moisture-permeability protection layer, the phase-change moisture-absorption indication layer and the backing supporting layer, the food-grade high-moisture-permeability protection layer is transparent or semitransparent, the backing supporting layer is waterproof, color-changing agent microcapsules are embedded in the phase-change moisture-absorption indication layer, and the color-changing agent microcapsules absorb water and change color.