276results about "Protein coatings" patented technology

The invention provides a leather product and a method for manufacturing the leather product. The leather article comprises a substrate and a coating comprising a cellulose derivative with improved color fastness to rubbing, the cellulose derivative may be methylcellulose, ethylcellulose, ethylmethylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, carboxymethyl cellulose, or carboxymethyl cellulose. The cellulose acetate-cellulose acetate composite material is prepared from ethyl hydroxyethyl cellulose, cellulose acetate, cellulose triacetate, cellulose propionate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, cellulose nitrate or cellulose sulfate.

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 invention belongs to the field of binders, and particularly relates to a flame-retardant binder as well as a preparation method and application thereof. The preparation method of the flame-retardant binder comprises the following steps: uniformly stirring and mixing a biomass raw material and a solvent to obtain a biomass solution; uniformly stirring and mixing a cross-linking agent and the biomass solution to obtain a precursor solution with the solid content of 5-50wt%; and adjusting the pH value of the precursor solution to 3-5 to prepare the flame-retardant binder. According to the invention, the biomass raw material and the cross-linking agent are taken as raw materials, the construction of a cross-linked network is realized by taking pH as driving force, and the bio-based adhesive with the advantages of high adhesive property, high flame retardant property, recoverability, environment friendliness and the like is prepared by controlling the solid content of a precursor solution and the pH of a system; the method can be applied to preparation of products such as a multilayer plate composite material, a particle plate composite material, a coating composite material and a flame-retardant film, and has wide practical application.

The limiting expandable aortic valve pipeline comprises an aortic valve preliminary pipeline attached with a collagen fiber coating, and the aortic valve preliminary pipeline comprises a proximal pipeline, a valve connecting pipe and a telecentric pipeline. The invention also discloses a preparation method thereof. The limiting expandable aortic valve pipeline provided by the invention is used for replacing an aortic artificial blood vessel and a Bentall type operation of an aortic valve, and after the artificial bioprosthetic valve declines, the limiting expandable aortic valve pipeline provided by the invention provides a condition for embedding the artificial bioprosthetic valve with the same size as an original valve in an interventional manner, so that the limiting expandable aortic valve pipeline can be used for replacing the Bentall type operation of the aortic valve and the artificial bioprosthetic valve. In this way, after the bioprosthetic valve declines, the valve with the same size as the original valve can be placed in an interventional mode, and the patient does not need to open the chest to replace the bioprosthetic valve with the same size.

The present invention discloses an infrared stealth coating for aircraft and a preparation method thereof; the present invention relates to the technical field of infrared stealth coatings, and the infrared stealth coating comprises the following components: 20-35g of collagen, 45-65mL of deionized water, 50-60mL of acetone, 12-25g of ITO powder, 7.5-14g of adhesive, 7-12g of polyaniline complex, and 16-25g of additive. In the present invention, since collagen macromolecules are rich in oxygen, nitrogen and other atoms that have a certain affinity for metal oxides, they can be used to modify and stabilize ITO nanoparticles, making the coating more stable during storage and use; and collagen itself has a certain film-forming property, and when added to the coating, it helps to form a continuous and uniform coating, thereby improving the integrity and density of the coating.

The invention relates to an industrial method, in particular to a method for preparing a universal functional protein nano-film on the surface of a base material, which comprises the following steps: (1) mixing a protein solution, an optional functional monomer and a photoinitiator solution to prepare a mixed solution; (2) soaking a base material in the mixed solution; and (3) irradiating with ultraviolet rays to obtain the protein nano-film on the surface of the base material. According to the universal method for continuously preparing the functional protein nano-film on the surface of the base material, rapid self-assembly aggregation and monomer polymerization of the protein can be carried out at the same time under ultraviolet induction, and the protein-functional polymer two-dimensional nano-film prepared on the surface of the base material is compact, low in roughness, high in transparency and good in application prospect. The biocompatibility is good.

The invention discloses a sunscald-preventing protective agent for fruits. The sunscald-preventing protective agent is prepared from the following raw materials in parts by mass: 1 to 20 parts of monodisperse calcium carbonate filter cake, 0.01 to 0.9 part of ethyoxyl modified polytrisiloxane, 0.01 to 0.8 part of polyvinyl acetate emulsion, 0.01 to 0.8 part of glycerol, 0.01 to 0.8 part of enzyme and 10 to 180 parts of water. The raw materials are mixed in two steps according to a certain sequence, stirred and dispersed to obtain the novel fruit anti-sunburn protective agent, and the novel fruit anti-sunburn protective agent can be used for fruit anti-sunburn planting after being diluted with water until the solid content of calcium carbonate is 2-6%. The sunburn-preventing protective agent is safe and non-toxic, can be sprayed on fruit surfaces or fruit tree leaf surfaces during use, can remarkably avoid the risk that fruits and fruit trees are burnt by strong sunlight, improves the disease resistance and stress resistance of the fruit trees, and reduces the occurrence probability of sunburn spots, sunburn fruits and diseased fruits. The anti-sunburn protective agent for the fruits has no great influence on transmission of visible light, does not influence normal photosynthesis of fruit trees, and can obviously improve the yield and quality of the fruits when being used for fruit planting compared with other sunshade modes.

The invention discloses an anti-natural gas hydrate coating which is obtained by coating the inner surface of a pipeline with a coating which can release phase change latent heat when the temperature drops and then curing the coating at low temperature, and the coating comprises the following raw materials in percentage by mass: 100% of dimethyl sulfoxide aqueous solution, 10% of gelatin and 10% of waterborne polyurethane. The mass fraction of the dimethyl sulfoxide aqueous solution is 60-90 wt%, the mass fraction of the waterborne polyurethane is 5-20 wt%, and the balance is gelatin. When the temperature drops, latent heat of phase change can be released, delayed freezing of the hydrate is achieved, the adhesive force of the hydrate is reduced, the self-repairing characteristic is achieved, and the problems that due to the too low temperature, the hydrate and the surface structure of the super-hydrophobic coating are mechanically interlocked, and the interior of the surface texture is coagulated are solved; and the problem of poor recycling performance of the existing super-hydrophobic coating is also solved.

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.

The invention discloses a fireproof wallboard transfer printing film and a preparation process thereof, and belongs to the technical field of transfer printing films, the fireproof wallboard transfer printing film comprises a base material layer, a coating, a transfer printing pattern layer and a protective layer, the coating is arranged on the base material layer, the transfer printing pattern layer is arranged on the coating, and the protective layer is arranged on the transfer printing pattern layer. The problem that when an existing transfer printing film is used, the wear resistance and adhesiveness are poor, and consequently the using effect of the transfer printing film is poor is solved. A high-temperature-resistant and corrosion-resistant polyester film or polypropylene film is adopted as a base material layer, a coating is prepared and dried and cured, UV curing ink added with a light stabilizer is adopted to print a pattern on the coating through a screen printing machine, and the printed ink pattern is subjected to light treatment through ultraviolet drying equipment so that the pattern can be cured instantly. The transfer printing pattern layer is formed, so that the transfer printing film has excellent adhesive force, weather resistance and wear resistance, and the use effect of the transfer printing film is improved.

The invention discloses a preparation method of a high-wear-resistance high-finger-slippery soft coating glove, which comprises the following steps: physically spraying a bio-based organic polymer material on the surface of a glove core coated with dipping latex, subsequently carrying out prevulcanization and high-temperature vulcanization in sequence, then washing by adopting alkali liquor, acid liquor and water in sequence, and finally drying to obtain the high-wear-resistance high-finger-slippery soft coating glove. And drying to obtain the high-wear-resistance high-finger-slippery soft coated gloves. The coating has the advantages that the production process is simple and reliable, the finger slip and wear resistance of the coating are greatly improved, meanwhile, the coating is endowed with a fine sand surface effect, and the coating has excellent finger slip, durable and comfortable effects in an oily environment and a dry environment.

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 disclosure provides leather articles and a method for making leather articles comprising a substrate and a coating comprising a cellulose derivative having improved colorfastness to rubbing. The cellulose derivative may be methyl cellulose, ethyl cellulose, ethyl methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate, cellulose triacetate, cellulose propionate, cellulose acetate propionate, cellulose acetate butyrate, microcrystalline cellulose, cellulose nitrate, or cellulose sulfate.

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.

One aspect of the present disclosure provides a polymer compound production method comprising heating to cause a reaction between, in dimethyl sulfoxide in the presence of a base and a reducing agent, a polypeptide having at least one mercapto group, and at least one compound that has two structures represented by general formula (1) and that is selected from the group consisting of polyethers, polyesters, and polycarbonates. [In general formula (1), M represents any one of H, Na, K, NHEt3, or NHEtiPr2.]

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.

The present invention discloses a strong and tough soy protein isolate-based film and its preparation process and application using a pulsed electric field for precise control. The strong and tough soy protein isolate-based film is prepared by mixing a soy protein isolate solution, a dialdehyde starch solution and a polyvinyl alcohol solution, adjusting the pH to 8.5-11, reacting for 10-50 minutes at 60-100°C and under the action of a pulsed electric field, and pouring the product into a culture dish, and drying the obtained product; the soy protein isolate-based film prepared by the present invention has excellent mechanical properties compared to other biomass film materials (cellulose, starch and chitosan films), the tensile strength of the material can reach 18.3MPa, and the elongation at break can reach 240.5%, which is 631% and 654% higher than the tensile strength and toughness of the soy protein isolate film with the addition of a traditional glycerol plasticizer; the obtained soy protein isolate-based film can block 97%-100% of the ultraviolet transmittance (≤400nm).

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 invention discloses a high-hydrophobicity surface deacetylated chitin nanocrystal package as well as a preparation method and application thereof, and relates to the technical field of materials. A preparation method of a high-hydrophobicity surface-deacetylated chitin nanocrystalline package comprises the following steps: pouring a surface-deacetylated chitin nanocrystalline solution into a culture dish, and slowly drying to obtain a surface-deacetylated chitin nanocrystalline film; and casting a layer of protein solution on the dried film until the surface of the film is immersed, placing a culture dish on an electric turntable, rotating at a constant rotating speed until the protein solution is uniformly diffused on the surface of the film, and drying the protein solution to obtain the high-hydrophobicity surface deacetylated chitin nanocrystal package. The film prepared by the method provided by the invention is simple to operate, the raw materials are all natural substances, no chemical residue exists, the film is healthier and suitable for food packaging, the research on the electrostatic self-assembly of the protein and the deacetylated chitin nanocrystals is less, and the electrostatic self-assembly market of the chitin nanocrystals can be impacted.

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.