19results about How to "Achieve antibacterial effect" patented technology

The invention relates to the field of essential oil slow release, and discloses a mildew-proof tablet containing plant essential oil and a preparation method and application thereof.The mildew-proof tablet containing the plant essential oil comprises two epidermal layers and an essential oil slow-release layer arranged between the two epidermal layers, the preparation method comprises the following steps: grafting sodium abietate and aminated mesoporous silica to prepare functionalized mesoporous silica, loading plant essential oil on the functionalized mesoporous silica to obtain a core material, introducing dihydroxyl polyhedral oligomeric silsesquioxane into a polyurethane main chain, wrapping the core material to prepare an essential oil slow-release agent, taking lignin as a base material, taking the essential oil slow-release agent as an effective component, and preparing the essential oil slow-release agent. And preparing to obtain the essential oil slow-release layer. The prepared essential oil slow-release layer can achieve the effects of essential oil slow release and antibiosis and mildew prevention, the slow-release effect is remarkable under the normal-temperature and high-temperature conditions, the good slow-release effect is still kept in the humid environment, and the efficacy period of the material is greatly prolonged.

The invention discloses a preparation method of polylactic acid fibers for medical and sanitary materials, and relates to the technical field of polylactic acid fibers. Nano-crystalline cellulose, nano-graphite particles and polylactic acid are blended and crosslinked, the mechanical property of a matrix is enhanced, the antibacterial property is achieved, fibers are prepared through spinning, supercritical carbon dioxide treatment is conducted for the first time, the nano-graphite particles can play a role of a nucleating agent, polylactic acid is promoted to form fine and uniform crystals, and the mechanical property of the matrix is improved. Carbon dioxide is effectively wrapped in the foaming process, a micropore structure is formed in the fiber, the mechanical property of a matrix is enhanced, then secondary supercritical carbon dioxide treatment is conducted, the nano-silver is loaded into the matrix through supercritical fluid, the antibacterial property and the mechanical property are further improved, then the nano-silver is soaked in a silicate solution, dehydration is conducted, and the nano-silver fiber is obtained. A silica gel layer is formed on the surface of the fiber, so that the mechanical property and the antibacterial property of a matrix are enhanced.

This application discloses an odor-removing product comprising an absorbent with an adsorption surface; a neutralizing agent comprising an acidic odor remover and an alkaline odor remover, each fixedly disposed on the adsorption surface; the acidic odor remover neutralizes alkaline odor components, and the alkaline odor remover neutralizes acidic odor components; and a biological inhibitor disposed on the adsorption surface to inhibit microbial growth. Therefore, it can neutralize and remove odors from both alkaline and acidic odor components, thereby achieving deodorization, and also inhibits microbial growth based on the biological inhibitor to prevent bacterial proliferation, thus achieving both odor removal and antibacterial effects and improving the user experience.

The utility model discloses a wear-resistant antibacterial ceramic tile, which relates to the field of ceramic tiles, and comprises a bottom plate, the top of the bottom plate is connected with a wear-resistant mechanism, the wear-resistant mechanism further comprises antibacterial glaze, the antibacterial glaze is also connected to the upper surface of an activated carbon layer, and an aluminum oxide material and the antibacterial glaze are mixed to form the wear-resistant antibacterial ceramic tile. The upper surfaces of the antibacterial glaze and the aluminum oxide material are connected with a microporous DLC (Diamond Like Carbon) protective film. According to the wear-resistant antibacterial ceramic tile, silver ions can be diffused to the surface of the ceramic tile through the microporous buffer fluid and micropores of the microporous DLC protective film, the antibacterial effect of the ceramic tile can be achieved through the silver ions of the antibacterial glaze, the humidity of the ceramic tile can be balanced through the silicon dioxide aerogel, the activity of the silver ions is guaranteed, and the antibacterial effect is improved in a disguised mode; in addition, impact force borne by the silicon dioxide aerogel and the honeycomb blocks can be transmitted to the microporous buffer fluid, the hardness of the microporous buffer fluid can be increased after the microporous buffer fluid is subjected to high-speed impact through the characteristics of an object, and protection on the ceramic tile is greatly improved.

The application relates to the technical field of sterilization and disinfection, in particular to a long-acting antibacterial composition for hard surfaces and application and use method thereof. The antibacterial composition is composed of a polymer precursor and a polymer base molecule in a molar ratio of 1:(100-200); the polymer precursor is obtained by modifying one or more of amino groups, hydroxyl groups, double bonds, siloxanes and isocyanate groups on the basis of a photodynamic molecule; the photodynamic organic molecule is one or more of porphyrin, metal porphyrin, dihydrogenophorin, phthalocyanine, fluorinated boron dipyrrin, pyrrolopyrrole diketone, cyanine dye, coumarin, benzophenone, isoazoline, riboflavin and ring metal complex and derivatives thereof. The application mainly realizes the long-acting antibacterial effect by depositing the photodynamic functional organic molecule on the hard surface and forming a stable coating structure, and the coating structure has very strong hardness.

The invention relates to the technical field of hand sanitizers, in particular to a no-wash hand sanitizer and a preparation method thereof. The no-wash hand sanitizer is prepared from the following components in percentage by mass: 0.5 to 1 percent of modified soybean peptide, 0.8 to 1.2 percent of artemisia japonica polysaccharide, 1 to 3 percent of glycerol, 0.3 to 0.5 percent of carbomer, 0.05 to 0.15 percent of triethanolamine, 0.1 to 0.5 percent of vitamin E, 0.02 to 0.05 percent of rose essence and the balance of distilled water, the structural formula of the modified soybean peptide is as follows: # imgabs0. The no-wash hand sanitizer provided by the invention is excellent in sterilization effect, long in action time, mild, skin-friendly and non-irritant.

The present invention discloses a fusidic acid derivative and a preparation method and application thereof. The present invention derivatizes the 3-OH site of fusidic acid through a linker with a disulfide bond, introduces different terminal functional groups on the one hand, and adjusts the properties of the fusidic acid molecule, such as the introduction of an amino group or a carboxyl group can change the water solubility of the molecule under different pH conditions, and the polyethylene glycol structure can change the systemic circulation characteristics of the molecule, etc. At the same time, active functional groups such as alkynes, amino groups, and carboxyl groups provide sites for further modification, thereby modularly constructing more functional fusidic acid derivatives. The disulfide bond in the linker can effectively maintain the antibacterial activity of fusidic acid, and in the presence of a polypeptide adjuvant, effective killing of Gram-negative bacteria is achieved. The preparation method of the present invention is simple, and the product separation and purification is easy.

A method for preparing and applying a nano-removable coating that can isolate saliva contamination and improve the bonding strength of zirconia restorations. The method includes the following steps: (1) cleaning the substrate material; (2) preparing a tannic acid solution and a ferric chloride hexahydrate solution; (3) sequentially adding the ferric chloride hexahydrate solution and tannic acid solution to the cleaned substrate material, vortexing, adjusting the pH value, continuing vortexing, washing, and drying to obtain a nano-removable coating that can isolate saliva contamination and improve the bonding strength of zirconia restorations. The MPN coating provided by this invention can effectively isolate the interaction between proteins and the zirconia substrate material, overcoming saliva contamination caused during restoration trial. It can be pre-coated before trial and removed before clinical bonding. Furthermore, the bonding durability of zirconia restorations treated with this MPN coating is close to that of zirconia restorations treated with cleaning agents, and superior to zirconia restorations treated with Ivoclean cleaning agent.

The present application belongs to the technical field of material chemistry and environmental governance, and discloses a plant decomposition type deodorant formula and a configuration method. In view of the defects of the existing deodorization technology, such as secondary pollution, slow effect, only masking odor, insufficient product stability and the like, the present application uses tea polyphenol extract, yucca extract, grape seed extract, various plant essential oils and other pure natural plant extracts as raw materials, does not contain chemical synthetic additives, and is prepared through a standardized process of precise control of constant temperature environment, grading stirring speed, step-by-step feeding and reaction time. The deodorant can target decomposition of various foul-smelling molecules, has the effects of bacteriostasis and oxidation resistance, is completely deodorized, has strong product stability, is safe and non-irritating, has no secondary pollution, and can be widely applied to foul odor treatment in multiple scenes such as livestock breeding, garbage treatment, sewage treatment, public environment and the like.

The present invention relates to the field of animal breeding, and specifically discloses an antimicrobial peptide and its preparation and application in animal feed additives. The antimicrobial peptide of the present invention is derived from Leuconostoc mesenteroides. The antimicrobial peptide produced by the strain has a significant inhibitory effect on a variety of Gram-positive bacteria, Gram-negative bacteria and fungi, and is resistant to high temperatures and acid and alkali. The antimicrobial peptide produced by the present invention can be widely used in the animal husbandry industry and the feed industry, can significantly inhibit the growth and reproduction of bacteria, has no chemical residues, no toxic side effects, no risk of environmental pollution, and has broad application prospects.

This invention discloses a long-lasting antibacterial and mildew-resistant artificial leather, relating to the field of artificial leather preparation technology. It comprises a base fabric layer, a foaming layer, and a surface treatment layer sequentially composited. The foaming layer is prepared from the following raw materials in parts by weight: 100 parts polyvinyl chloride resin, 40-80 parts plasticizer, 2-8 parts stabilizer, 1-10 parts foaming agent, 0.5-8 parts antibacterial and mildew-resistant composite agent, and 1-10 parts additives. The antibacterial and mildew-resistant composite agent includes a supported inorganic antibacterial agent and an organic mildew-resistant agent. The supported inorganic antibacterial agent is one or more of silver-loaded zeolite, silver-loaded zirconium phosphate, nano-zinc oxide, and nano-copper oxide. This invention employs a dual-layer structure design where the foaming layer and surface treatment layer synergistically support the antibacterial and mildew-resistant composite agent, enabling the antibacterial active components to form a reservoir within the material and continuously exert their effects on the material surface, thereby significantly improving the long-lasting antibacterial and mildew-resistant performance of the artificial leather.

This invention belongs to the field of functional films, and relates to self-assembled Thy@ZIF-8 nanoparticles, a self-reinforced multifunctional preservation composite film, its preparation method, and its application. The self-assembled Thy@ZIF-8 nanoparticles are nanoparticles formed by encapsulating thymol (Thy) in the metal-organic framework material ZIF-8. This invention prepares and optimizes self-assembled Thy@ZIF-8 nanoparticles and, for the first time, uses them as a material component in the preparation of post-harvest fruit preservation films. Utilizing the porous structure and high specific surface area of ​​ZIF-8 nanoparticles, the active substance Thy is encapsulated to prepare synthetic Thy@ZIF-8 nanoparticles. Through changes in the pH of the microenvironment during post-harvest storage of fruit, the structure of the Thy@ZIF-8 nanoparticles is disrupted, releasing Thy, achieving the purpose of slow release and prolonged antibacterial effect.

This invention belongs to the textile field, and specifically relates to a method for preparing colored antibacterial textiles. The method uses waste colored cotton fabric as raw material, and obtains colored micro / nanocellulose by acid hydrolysis to break down the cellulose macromolecular chains. After cationic modification, it yields cationic modified colored cellulose with excellent water dispersibility. Polyethyleneimine or polylysine is added to alter the stability of the cationic modified colored cellulose aqueous dispersion, causing it to flocculate and form a gel. A crosslinking agent is used to form chemical crosslinks between cellulose, polyethyleneimine or polylysine, and the textile substrate, resulting in high-performance colored antibacterial textiles. This invention utilizes waste colored cotton fabric as raw material, realizing the resource utilization of waste textiles. The use of epoxy or cyclonitrogen crosslinking agents to form crosslinks between the cationic modified colored cellulose gel, polyethyleneimine or polylysine, and the textile substrate achieves coloring and antibacterial finishing of the textiles.

The invention relates to the field of medical instrument surface engineering, and discloses an antibacterial and anticoagulant hydrogel composite coating for the surface of a blood contact type medical instrument and a preparation method. The coating consists of a hydrophilic monomer, an antibacterial component, methacrylated heparin and a cross-linking agent, and is constructed on the surface of the blood contact type instrument by adopting a surface grafting-cross-linking strategy. The three polymer chains have high cohesion strength and environmental stability after being chemically crosslinked, can be firmly combined with various base materials, and are suitable for high polymer materials such as polyurethane and polyvinyl chloride and metal or alloy substrates such as stainless steel, titanium alloy and cobalt-chromium alloy. The coating has triple functions of super lubricity, antibiosis and anticoagulation, is suitable for surface modification of instruments such as central venous catheters, hemodialysis catheters, arteriovenous cannulas and intravascular stents, can reduce infection and thrombus risks and improve safety and smoothness of indwelling and implantation, and has a wide clinical application prospect.

The application discloses an environment-friendly decorative paper with a multilayer structure and a preparation method thereof, and relates to the technical field of multilayer composite materials. The environment-friendly decorative paper with the multilayer structure is prepared by mutually adhering a base layer, a bonding layer, a functional layer, a printed decorative layer and a surface protection layer. The base layer is made of wood pulp fibers, bamboo pulp fibers and other raw materials as biomass conversion materials, the bonding layer is modified polyurethane resin, the printed decorative layer adopts water-based ink, and the surface protection layer has excellent protection properties. The environment-friendly decorative paper with the multilayer structure has both environmental protection and functionality, the layers are tightly combined and not easy to separate from each other, can be widely applied to the decoration fields of furniture and building materials, solves the problems of poor environmental protection, single function and short service life of traditional decorative paper, and has a good application prospect.

The invention relates to the field of biodegradable materials, in particular to a manufacturing process of a degradable material for syringe production, and aims to solve the problem that the medical safety of syringes is not high due to poor antibacterial property and degradability of existing syringe production materials. According to the manufacturing process, the special injector material which has excellent antibacterial performance and can be quickly degraded in the natural environment is successfully prepared by taking the antibacterial degradable resin as a main raw material, so that the problems of cross infection and medical waste treatment which are easily caused by a traditional injector material are solved, and the concepts of environmental protection and sustainable development are met; the preparation method has wide application prospects and market value, and the preparation process is scientific, reasonable, simple, easy to implement and suitable for large-scale industrial production.

The invention provides conductive hydrogel based on Schiff base crosslinking and tannic acid green rGO as well as a preparation method and application of the conductive hydrogel, and belongs to the technical field of biomedical materials. The preparation method of the conductive hydrogel comprises the following steps: reducing graphene oxide by using tannic acid to prepare TA-rGO; uniformly dispersing the TA-rGO in water, so as to obtain a TA-rGO dispersion liquid; adding carboxymethyl chitosan into the TA-rGO dispersion liquid to obtain a mixed liquid; and adding an oxidized hyaluronic acid aqueous solution into the mixed solution under a stirring condition, uniformly mixing, and standing to obtain the conductive hydrogel. An integrated three-dimensional network structure is cooperatively constructed through dynamic covalent Schiff base crosslinking and multiple non-covalent interaction, the material is endowed with high conductive stability, excellent mechanical toughness, self-repairing capacity, antibacterial / antioxidant activity and good biocompatibility, and it is achieved that the material is combined with electrical stimulation to accelerate healing of diabetic wounds.

This invention relates to a method for synthesizing dust-free silica gel cat litter at the source. Its morphology and mesoporous structure can be controlled at the source according to usage requirements, belonging to the field of pet product manufacturing technology. This method uses sodium silicate and an acidic solution as raw materials. By controlling the pH, temperature, and reaction time during the gel synthesis stage, the density of hydroxyl groups and the pore structure of the silica gel surface can be controlled at the source. Further optimization of its mesoporous structure and surface properties is achieved through treatment in an alkali metal salt solution. This method eliminates the need for subsequent resin coating or chemical additives, simultaneously achieving dust-free, high-adsorption, long-lasting odor-locking, and structural antibacterial functions at the synthesis source. The resulting silica gel cat litter has low dust content, high water absorption, and strong adsorption capacity for odors such as ammonia. The production process covers the entire process from synthesis and modification to sorting and packaging, making it suitable for large-scale continuous production. It solves the problems of balancing performance and environmental protection, unstable quality control, and fragmented industrial chains inherent in traditional processes.

The utility model relates to medical apparatus and instruments technical field, especially a kind of medical first-aid hemostatic plug. Including a round table body, the round table body is compressed by non-woven fabric, the surface of non-woven fabric is coated with chitosan;A elastic buffer cavity, the bottom center of the round table body is recessed to form the elastic buffer cavity, the structure can adsorb dirty blood and close wound, and hemostasis and antibiosis can be realized simultaneously, by the small diameter end of the structure towards wound and plug into the inner wall deep, first, through the density of upper area of smaller density, realize blood absorption, hemostasis disinfection and the expansion positioning of middle part of wound inner wall, then, through the density of top area of larger density, realize the adsorption and hemostasis disinfection of bleeding in deep part of wound, and through the density of lower area of larger density, realize the adsorption and hemostasis disinfection of bleeding outside wound inner wall, and then, the zoned rapid hemostasis treatment of wound can be realized, especially suitable for the hemostasis of hole wound, sinus wound and trauma type bleeding, convenient and fast to use.