25results about "Protein coatings" patented technology

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 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.

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.

The application provides a sensor with antioxidant and antifouling properties and a preparation method and application thereof, and belongs to the technical field of marine chemistry. The sensor takes a glassy carbon electrode (GC) as a substrate, adopts polyaniline as a solid contact layer, and takes a calcium ion selective membrane (ISM) as a detection core. The innovation of the sensor is that a fucoidan-based functional polypeptide (PFp) is modified on the ISM to construct an antifouling layer. The PFp layer forms a triple synergistic defense mechanism of "anti-adhesion-sterilization-antioxidation". Experiments prove that the sensor can effectively inhibit the adhesion and colonization of bacteria such as escherichia coli and staphylococcus aureus and chlorella, and significantly slow down the oxidative decay of the sensing membrane. In addition, when the sensor is used for calcium ion detection in actual seawater, it exhibits excellent long-term stability and high precision, and provides an innovative strategy for continuous in-situ monitoring in complex media.

The application discloses a graphene nanocapsule modified water-based epoxy-petroleum resin paint and a preparation method and application thereof. The water-based epoxy-petroleum resin paint is composed of component A and component B, and the mass ratio of the component A to the component B is 5.5-6.5:1. The component A is composed of a water-based epoxy emulsion, a liquid petroleum resin, graphene nanocapsules, a cosolvent, pigments, fillers, a dispersing agent, a defoaming agent, a substrate wetting agent, an anti-flash rust agent, an adhesion promoter and water. The component B is composed of a curing agent and water. The preparation method of the water-based epoxy emulsion and the graphene nanocapsules is simple and the process is stable. When the paint is prepared, the raw materials are mixed uniformly in batches according to the proportion, and when the paint is used, the component A and the component B are mixed uniformly according to the proportion. The graphene nanocapsule modified water-based epoxy-petroleum resin paint has the advantages of strong adhesion, short drying time, low VOC, excellent water resistance and salt mist resistance, and can be used in the anticorrosion field of offshore rocket launching.

This invention provides a two-component flame retardant, its preparation method, and its application, relating to the technical field of flame retardants. The two-component flame retardant comprises component A and component B; wherein component A comprises starch phosphate ester, calcium chloride, surfactant, propylene glycol, aerogel, and water; wherein component B comprises bone glue and water. This two-component flame retardant is environmentally friendly, non-corrosive, and has no impact on plant growth. It can be used on trees, leaves, paper, walls, and insulation boards, exhibiting excellent performance. It demonstrates good weather resistance when used in rainy seasons in the south, cold regions in the north, and hot summers, without affecting product quality while providing excellent protection.

This invention provides a method for preparing an antimicrobial peptide composite material, comprising: S1 preparing a β-TCP / HyA porous substrate; S2 synthesizing mesoporous polydopamine (MPDA); S3 dispersing the β-TCP / HyA porous scaffold and the mesoporous polydopamine in deionized water for a second crosslinking reaction to form a β-TCP / HyA / MPDA composite suspension; and then adding the antimicrobial peptide KR to the β-TCP / HyA / MPDA composite suspension to induce a binding reaction, thereby obtaining the antimicrobial peptide composite material. This invention crosslinks β-tricalcium phosphate (β-TCP), hyaluronic acid (HyA), and mesoporous polydopamine (MPDA) to construct a multifunctional composite substrate that combines physical support, biocompatibility, and high-efficiency loading. The mesoporous structure of MPDA provides numerous anchoring sites for the antimicrobial peptide KR. Through MPDA adhesion and covalent fixation strategies for the antimicrobial peptide, high-density and high-activity loading of KR molecules is achieved, effectively solving the problems of easy detachment and "fixation leading to inactivation".

The application provides a hydrophobic interface film composite material for inhibiting wheat ear germination and a preparation method thereof, raw materials of the hydrophobic interface film composite material comprising chitosan powder, zein, nano-silicon dioxide and a solvent; wherein the mass-volume concentration of the chitosan powder is 0.1-5%; the mass-volume concentration of the zein is 0.1-5%; and the mass-volume concentration of the nano-silicon dioxide is 0.1-3%. The hydrophobic interface film composite material is sprayed on the surface of mature wheat grains to form a hydrophobic interface film, so that the occurrence of wheat ear germination can be effectively inhibited, and the safe production of wheat can be ensured. The hydrophobic interface film composite material has a good effect of inhibiting wheat ear germination, and after spraying, the germination rate of the isolated ear can be reduced by more than 95%, and the yield and quality caused by the wheat ear germination are reduced.

This invention discloses a high-temperature resistant non-stick coating and its preparation method, comprising a high-temperature resistant substrate composed of bio-based materials, a wear-resistant intermediate layer containing nano-reinforcing phases, and a super-slippery, non-toxic surface layer, with each layer cross-linked by chemical bonds to form a whole. The high-temperature resistant substrate is composed of a composite of nano-hydroxyapatite (n-HAP) and silica aerogel, and a silane-modified natural silk fibroin binder. The n-HAP has a particle size of 50-200 nm and accounts for 30-50% of the total substrate mass. The silica aerogel has a porosity ≥80%, and the silane-modified silk fibroin has a grafting rate of 15-25%. In this invention, the nano-hydroxyapatite and silica aerogel composite is used as the substrate; the former has a decomposition temperature exceeding 1200℃, and the latter has a porosity ≥80%, constructing a highly efficient thermal insulation framework. At 1000℃, the coating mass loss rate is ≤3%, far superior to traditional coatings. The high-temperature resistant substrate uses bio-based materials; the nano-hydroxyapatite has good biocompatibility, and the silane-modified silk fibroin is biodegradable.

The present invention provides: a composition which is capable of imparting excellent water resistance to a base material; a coating material which contains the composition; and a method for producing a base material to which water resistance has been imparted. The composition contains a polyphenol, a fat or oil, and casein. The content of the fat or oil with respect to the composition is 2 mass% or more. The polyphenol is, for example, tannin, and casein is, for example, not limited to isolated casein. For example, casein contained in milk and products obtained by processing milk such as fermented milk products and processed milk are used and therefore a coating material which uses any of those dairy products directly is also included. The composition can be obtained by emulsifying a mixture of these components. A base material to which excellent water resistance has been imparted can be obtained by impregnating the base material with the composition and performing a drying treatment by means of UV irradiation or overheating.

Various cell analysis systems of the present teachings can measure the electrical and metabolic activity of single, living cells with subcellular addressability and simultaneous data acquisition for between about 10 cells to about 500,000 cells in a single analysis. Various sensor array devices of the present teachings can have sensor arrays with between 20 million to 660 million ChemFET sensors built into a massively paralleled array and can provide for simultaneous measurement of cells with data acquisition rates in the kilohertz (kHz) range. As various ChemFET sensor arrays of the present teachings can detect chemical analytes as well detect changes in cell membrane potential, various cell analysis systems of the present teachings also provide for the controlled chemical and electrical interrogation of cells. The frame rate can be increased by selecting a smaller subset of pixels to monitor, i.e. by windowing down the area of a sensor array device over which data is collected.

This invention relates to the field of food packaging and functional food technology, and discloses an edible soybean residue-based cup with preservation and health-promoting functions, and its preparation method. The cup includes a soybean residue-based preform, which is formed by extrusion injection molding from soybean residue ultrafine powder, composite starch, and pH-sensitive health-promoting microcapsules. Its inner wall is coated with an active preservation layer containing glucose oxidase, catalase, and nisin, and its outer surface is coated with a physical barrier film formed by beeswax and shellac curing. This invention improves the water resistance and structural stability of the substrate by constructing a physical barrier film on the outer wall to seal pores; it actively reduces the oxygen partial pressure inside the cup and inhibits microbial growth through the synergistic effect of the multi-enzymatic reaction and antimicrobial peptides in the inner wall preservation layer, thus extending the shelf life of the food; and it combines microcapsule technology to protect the active core material in gastric juice and target its release in the intestine, improving the bioavailability of the health-promoting components.

The present invention relates to a method for coating seed, comprising the steps of:providing an aqueous coating solution which comprises a gelatine having a Bloom value of approximately 150 g or less and a viscosity of approximately 2.5 mPa·s or less, wherein the viscosity is measured on a 6.67% gelatine solution at 60° C.; andapplying the coating solution to the surface of the seed and letting the coating solution dry in order to obtain a gelatine-based coating on the seed.

The invention discloses a diaphragm and a preparation method thereof and a lithium-sulfur battery, the diaphragm comprises a base membrane and a cottonseed protein coating, the cottonseed protein coating is coated on at least part of the surface of the base membrane, the cottonseed protein coating comprises cottonseed protein particles, and the cottonseed protein particles are obtained by crosslinking cottonseed protein. The cottonseed protein coating is arranged on the surface of the diaphragm, so that the diaphragm has good mechanical performance and ionic conductivity, the shuttle effect of lithium polysulfide can be effectively inhibited, and the transmission performance of lithium ions is improved. When the diaphragm is applied to the lithium-sulfur battery, the diaphragm has higher mechanical strength, thermal stability and lithium polysulfide adsorption capacity, the cycling stability of the lithium-sulfur battery can be improved, and the overall performance of the lithium-sulfur battery can be improved.

This invention belongs to the field of biomanufacturing technology, specifically relating to a method for preparing an acoustically assembled multilayer structure based on a hydrophobic chamber. The method includes the following steps: adding a photocurable aqueous assembly liquid containing dispersed assembly units to a hydrophobic chamber, with the liquid level below the outer edge of the chamber; the sidewalls of the hydrophobic chamber are made of a hydrophobic material; under Faraday wave assembly drive, the assembly units form a specific patterned structure and are then fixed to obtain a cured surface layer; the above steps are repeated until a multilayer structure with the same thickness as the hydrophobic chamber is obtained. This invention addresses the influence mechanism of the assembly process and proposes a scheme to replace the polymethyl methacrylate chamber with a hydrophobic chamber, overcoming the limitation that the assembly liquid must fill the chamber completely.

The invention relates to a method for coating seed, comprising the steps of: - providing an aqueous coating solution comprising a gelatine having a Bloom value of approximately 150 g or less and a viscosity of approximately 2.5 mPa∙s or less, the viscosity in a 6.67% gelatine solution being measured at 60°C; and - applying the coating solution to the surface of the seed and letting the coating solution dry in order to obtain a gelatine-based coating on the seed.

The application relates to the technical field of aerosol generating equipment, and provides a heating assembly, a preparation method thereof and an aerosol generating device, so as to solve the problem of continuous adsorption of aerosol matrix when a liquid guide piece is placed for a long time. The heating assembly comprises a liquid guide piece, a heating piece and a sealing film. The liquid guide piece has a liquid inlet surface, an atomization surface and a liquid guide hole communicating the liquid inlet surface and the atomization surface. The heating piece is connected to the atomization surface. The sealing film is arranged on the liquid inlet surface. In a non-working state of the heating piece, the sealing film is solidified on the liquid inlet surface to prevent the aerosol matrix from flowing into the liquid guide hole. In a working state of the heating piece, the sealing film is melted and opens the liquid guide hole to enable the aerosol matrix to flow from the liquid inlet surface to the atomization surface. The component of the sealing film comprises edible gelatin. The sealing film made of edible gelatin is arranged on the liquid inlet surface of the liquid guide piece, so that the sealing film can play the role of a heat triggered switch on the liquid guide piece to prevent liquid leakage or excessive soaking of the liquid guide piece when the liquid guide piece is placed for a long time.

The application discloses a leather finishing aid and a preparation method and application thereof, and belongs to the technical field of leather finishing. The leather finishing aid comprises the following components in parts by weight: water-soluble graphene: 1-3 parts; solid paraffin: 3-8 parts; grease: 5-10 parts; high-grade fatty alcohol: 1-5 parts; thickening agent: 0.2-1 part; emulsifier: 1-3 parts; matt filler: 10-20 parts; modified casein: 5-15 parts; and water: 60-75 parts. The leather finishing aid can effectively avoid the problem of adhesion of stacked leather, improve the tear strength of a coating, and reduce the tensile strength of a coating film. Moreover, the leather finishing aid can obtain leather coatings with different gloss, effectively improve the softness of a coating, endow the coating with a delicate and soft hand feeling, and improve the hiding effect of the coating.

This invention discloses a protein-induced self-growing transparent hydrogel antifouling coating and its preparation method, belonging to the field of marine antifouling gel coatings. The preparation method involves culturing bacteria that secrete large amounts of extracellular polymers and obtaining a sterile supernatant; adding a protein precipitant to obtain a precipitate; adding a protein precipitation washing reagent and mixing thoroughly to obtain the target protein, which is then freeze-dried and purified; immersing a substrate sample in a bacterial protein solution to deposit a protein coating; preparing a hydrogel precursor solution; immersing the protein coating in the hydrogel precursor solution; and allowing it to grow statically to obtain a protein-induced self-growing transparent hydrogel antifouling coating. This invention overcomes the shortcomings of current hydrogels, such as poor adhesion to the substrate and high cost, and successfully prepares a robust, low-cost, and environmentally friendly hydrogel adhesion layer with in-situ initiation and subsequent self-growth. It is not limited by traditional environmental constraints such as light and heat, thus expanding the application scenarios of hydrogels.

This invention provides a biodegradable modified coating, a modified knot plugging agent for fracturing, and their preparation method, belonging to the field of tertiary oil recovery technology. Specifically, the dense cross-linked network structure generated by the Schiff base reaction between gelatin (GL) and glutaraldehyde (GD) serves as a coating material for the knot plugging agent, providing it with high strength and stability without sacrificing its biodegradability. Furthermore, by changing the reaction conditions (immersion time and curing time) during the preparation of the coated knot plugging agent, a series of knot plugging agents adaptable to different reservoir temperatures and degradation cycles can be obtained to meet the complex conditions in perforation cluster plugging processes, thus broadening its application range.

A self-disinfecting coating (1) for surfaces: is provided that includes a base matrix (2) and a loading solution (3), the matrix (2) in turn includes a gel base (10) and a gel fluid (7), and the loading solution (3) comprises an active disinfectant ingredient (4), in such a way that the base matrix (2) is able to absorb and retain the active ingredient (4) while maintaining, on the free surface of the coating (1), a sufficient concentration of active ingredient (4), thus maintaining the surface disinfected. The gel base (10) may include a protein of collagen, albumin or elastin and glycerine as the plasticising agent (6). The loading solution (3) may include elemental iodine as an active ingredient (4) and ethanol as the loading solvent (8). The self-disinfecting coating (1) may include a base substrate (11) that includes therein the base matrix (2) and loading solution (3).

The present invention relates to a hydroalcoholic coating composition comprising, based on the total composition, between 12 wt% and 35 wt% zein proteins, said zein proteins comprising more than 92 wt% α-zein, between 65 wt% and 88 wt% of a solvent system, and up to 5 wt% of one or more additives, wherein the solvent system consists of one or more alcohols, water and one or more fatty acids, wherein the one or more alcohols comprise ethanol in an amount of more than 70 wt% of the one or more alcohols, wherein the one or more fatty acids comprise one or more C16-C18 unsaturated fatty acids, and wherein the amount of the one or more alcohols in the solvent system is greater than or equal to [61 – 0.58 x the amount of the one or more fatty acids in wt% in the solvent system] and less than or equal to [93 – 0.84 x the amount of the one or more fatty acids in wt% in the solvent system].

An aortic valve conduit with limited expansion is disclosed which includes an aortic valve preliminary conduit attached with a collagen fiber coating. The aortic valve preliminary conduit includes a proximal conduit, a valve connecting conduit, and a distal conduit. A preparation method thereof is also disclosed. The aortic valve conduit may be used for Bentall type surgery. After an artificial biological valve dysfunctions, the aortic valve conduit disclosed herein provides conditions for placing a replacement artificial biological valve with a same size as the original (dysfunctional) valve in an interventional mode. After the biological valve dysfunctions, the replacement valve with the same size as the original valve can be placed in an interventional mode, and a patient's chest does not need to be opened to replace the biological valve with the same size replacement.

A method for preparing a plant-based protein hydrogel slurry is provided. [Solution] The present invention relates to a method for preparing a plant-based protein hydrogel slurry, and a method for preparing a plant-based structured material (e.g., a film, casting, molded product, etc.) from the plant-based protein hydrogel slurry.

The present invention relates to a storage stable hydroalcoholic coating composition comprising, based on the total composition, between 10 wt% and 32 wt% zein protein, between 60 wt% and 88 wt% of a solvent system, and up to 5 wt% of one or more additives, wherein the solvent system consists of one or more alcohols, water and one or more fatty acids, wherein the one or more alcohols comprise ethanol in an amount of more than 60 wt% of the one or more alcohols, wherein the one or more fatty acids comprise one or more C16- C18 unsaturated fatty acids, and wherein the amount of the one or more alcohols in the solvent system is greater than or equal to [50 – 0.375 x the amount of the one or more fatty acids in wt% in the solvent system] and less than or equal to [92 –0.9 x the amount of the one or more fatty acids in wt% in the solvent system].