344results about How to "Good antibacterial function" patented technology

The invention discloses a grafted modified aromatic polyamide composite reverse osmosis membrane and a preparation method thereof, belonging to preparation technology of composite reverse osmosis membranes. The structural formula of the membrane is shown as follow. The preparation process comprises the following steps: taking a polysulphone membrane as a support membrane, preparing an aromatic polyamide composite reverse osmosis membrane to be grafted by an interfacial polymerization; enabling a graft modified solution containing 3-hydroxymethyl-5,5-dimethylhydantoin to contact the surface of the membrane to be grafted quickly for reacting, and conducting heat treatment to obtain the modified aromatic polyamide composite reverse osmosis membrane grafted with hydantoin derivatives. The invention has simple process, and the prepared membrane has the characteristics of good chlorine resistance and good microbial contamination resistance.

The invention provides a guided tissue regeneration composite membrane material. The guided tissue regeneration composite membrane material is characterized by being in a double-layer membrane structure, wherein the double-layer membrane structure comprises a loose layer on the bottom layer and a compact layer on the upper layer. According to a second aspect, the invention provides a preparation method of the guided tissue regeneration composite membrane material. According to the guided tissue regeneration composite membrane material and the preparation method, the biological membrane material having the customized specification, having the tissue integration activity, and being capable of promoting the growth of the osteoblasts can be printed by adopting a three-dimensional printer, a material with the capacity of promoting the periodontal ligament cell adhesion and the periosteum cell adhesion is prepared by combining with the electrospinning technology, and a medicine having the antimicrobial activity is combined, therefore, the guided tissue regeneration composite membrane material has good biocompatibility, good bone repair function and good bacteria resisting function, and can be used for the periodontal guided tissue regeneration treatment and periosteum defect repair.

The invention which discloses a preparation method for metal/ceramic nanometer multilayer films with antibacterial and wear resistant surfaces relates to a preparation method for nanometer multilayer films and solves the problem of high cost and great difficulty in preparing wholly antibacterial materials and low wear resistance of surfaced treated antibacterial materials. The method comprises the following steps: a magnetron sputtering method is adopted, the background vacuum degree is 10<- 4> to 10<- 2> Pa; sputtering against targets in the conditions of the gas flow ratio of 2 to 17:1 of argon to one gas of the three gases of nitrogen, acetylene or methane, total air pressure of 0.1 - 1.0Pa, magnetron sputtering currents of 0.2 - 50A, voltage of 300 - 600V, substrate bias voltage of minus 50 to minus 400V and deposition temperatures of 80 - 400 DEG C. The nanometer ceramic/metal multilayer films prepared by the invention have good wear resistance and the antibacterial rate of more than 95 percent; the invention has the advantages of no pollution, low cost, easy realization and good industrial application prospects.

A product having a glass layer is produced that can be produced at low cost and can exhibit excellent antibacterial function. A base body, a first glazing material capable of forming a first glass layer on a surface of the base body, and a second glazing material capable of forming a second glass layer containing a silver compound on the surface of the base body. A first glazing material layer comprising the first glazing material and, on the surface side, a second glazing material layer comprising the second glazing material are formed on the surface of the base body. The first glazing material layer and the second glazing material layer are melted to form a first glass layer and a second glass layer. The second glazing material layer has a higher viscosity upon melting than the first glazing material layer.

The invention relates to flexible wearable fabric, in particular to a multifunctional wearable polymer/MXene compound fabric heater and a preparation method thereof. The preparation method of the polymer/MXene compound fabric heater comprises the following steps that (1) polymer-based fabric is washed after being soaked in an alkali solution, and pre-treated polymer-based fabric is prepared; (2),LiF powder and an HCl solution are stirred to prepare an etching solution; (3) MAX phase powder is added into the etching solution to be stirred, reaction products are prepared, the reaction productsare centrifuged after being diluting, supernate is removed, sediment MXene is prepared, deionized water is added into the sediment MXene, ultrasonic treatment and centrifugation are carried out successively, and an MXene solution is prepared; and (4) after being dipped in the MXene solution, the pre-treated polymer-based fabric is taken out and then dried, and the polymer/MXene compound fabric heater is prepared. When the thickness of the prepared polymer/MXene compound fabric heater is 340 micrometers, the electromagnetic shielding effectiveness of the polymer/MXene compound fabric heater is42.1 dB, and meanwhile the polymer/MXene compound fabric heater has good permeability, flame retardant and anti-bacterial functions.

The invention discloses an aromaticpolyamide composite reverse osmosis membrane modified by graft polymerization and a preparation method thereof, belonging to a preparation technology of composite reverse osmosis membranes. The surface of the aromaticpolyamide composite reverse osmosis membrane modified by graft polymerization is provided with a 3-allyl-5,5-dimethylhydantion polymer. The preparation method comprises the steps of: reacting 5,5-dimethylhydantion with allyl bromide to prepare the 3-allyl-5,5-dimethylhydantion polymer as a monomer; and introducing the 3-allyl-5,5-dimethylhydantion polymer into the surface of the aromaticpolyamide composite reverse osmosis membrane by adopting zaodiisobutyronitrile amidine hydrochloride as an initiating agent through using a graft polymerization method to prepare the aromaticpolyamide composite reverse osmosis membrane modified by graft polymerization. The invention has simple process; and the prepared aromaticpolyamide composite reverse osmosis membrane modified by graft polymerization has properties of resisting chlorine and preventing microbial contamination.

The invention discloses an antibacterial cellulose acetate nanofiltration membrane and a preparation method thereof. The casting film liquid, composed of 5-14% by weight of secondary cellulose acetate, 3-9% by weight of cellulose triacetated, 15-24% by weight of acetone, 1-5% by weight of maleic acid, 50-55% by weight of dioxane, 5-12% by weight of porogens that is methanol or ethanol and chemical modified nano-particle, is treated to obtain the antibacterial cellulose acetate natrium filter film after filtrating, debubbling, film flotation on the base cloth, solidifying in the gel baith and post processing. The invention brings the plasm chemical modified antibacterial nano-particle into the cellulose acetate nanofiltration membrane to make the nanofiltration membrane have a strong bacteriostasis and sterilization function, and the surface of the nanofiltration membrane is hard to absorb alga and animalcule to raise the use life and the service efficiency of the nanofiltration membrane remarkably. The antibacterial cellulose acetate nanofiltration membrane prepared based on the invention has the advantage of a steady structural properties, a strong erosion-resisting vharacteristics by animalcule and a high water flux of the film. The invention can be broadly used in the field of treatment of ground drinking water, biological pharmacy and the pretreatment of sea water desalination.

Process for functional bamboo-carbon powder and its use in synthetic fiber are disclosed. The process is carried out by crushing blocked bamboo-carbon powder into fragments with 3-5cm diameters, immersing it in antibacterial liquid, filtering, drying, crushing it for two times, fractionating circulating while ultra-thin flow crushing to obtain bamboo-carbon powder, mixing bamboo-carbon powder with synthetic fiber, and wiredrawing to form bamboo-carbon fiber. The bamboo-carbon fiber contains power 2.8-5.5% and the content of fiber is 4.0-5.5%. It's cheap, has excellent anti-radiant, thermal-insulating and antibacterial functions and small grain diameter.

The invention discloses a zirconium base blocky amorphous/nanocrystalline alloy with an antibacterial action and a preparation method thereof. The components of the alloy in atomic percentage are ZraAlbCocAgd, wherein a is 50%-55%, b is 15%-17.5%, c is 22.5%-30%, and d is 3%-10%. According to the blocky amorphous alloy provided by the invention, (1), the blocky amorphous alloy has an efficient antibacterial element Ag and has a favorable antibacterial or bacteriostatic function; (2), through carrying out a heat treatment on the blocky amorphous alloy at a certain temperature, the nm-grade Ag is separated out from an amorphous alloy matrix, and such an alloy with an amorphous/nanocrystalline structure has a more favorable antibacterial performance; (3), the zirconium base blocky amorphous/nanocrystalline alloy has strong amorphous formation capability, and the zirconium base amorphous alloy with a critical diameter which is not less than 8 mm can be prepared by adopting a copper die casting method; and (4), compared with a conventional biological medical alloy, the zirconium base blocky amorphous/nanocrystalline alloy has a higher yield strength, a lower modulus of elasticity and better mechanical biocompatibility. Therefore, the series of the amorphous alloys have a wide application prospect in the fields of structural materials, biological materials, medical instruments and the like.

The invention relates to an antibacterial health-care fabric which comprises an outer layer, a middle layer and an inner layer, wherein the outer layer is an antibacterial layer, the middle layer is a fabric layer, the inner layer is a health-care layer, the outer layer is a blended fabric made of bamboo charcoal fiber and polyester fiber, the middle layer is a blended fabric made of one or more of natural cotton, polyamide fiber, polyurethane fiber and polyamide fiber, the main components of the inner layer are far infrared fiber and anion fiber, and the outer layer contains a nano-silver antibacterial component. The antibacterial health-care fabric provided by the invention has the beneficial effects that the health-care fabric is reasonable in structure and simple in preparation process, and has good permeability and perspiration absorption; and meanwhile, because of excellent health-care and antibacterial functions, the antibacterial health-care fabric is used widely, can be made into various clothes, and has good economic benefits.

The invention discloses an artificial stone and a preparation method thereof. The artificial stone comprises the following raw materials in percentage by weight: 30-60% of quartz, 30-60% of crushed glass, 5-10% of alloy resin, 0.01-3% of alloy powder, 0.01-0.5% of pigment, 0.01-0.5% of a coupling agent and 0.01-0.5% of a curing agent. The artificial stone has the characteristics of art attractiveness, health and environment-friendliness. Due to addition of the alloy powder and the alloy resin in the formula, the artificial stone has an outstanding antibacterial function, is relatively high in anti-permeability and moisture resistance, long in service life and relatively good in glossiness, fullness and moisturizing property, the waste glass and the waste gel can be utilized again, thus being energy-saving and environmentally friendly; flowers can be also made according to demands, and thus artificial stone with patterns can be manufactured.

The invention discloses a production method of an inflaming retarding bast fiber fabric. A bastose filament is used as an inner core material, an inflaming retarding fiber is wrapped on the surface of the bastose filament by using a yarn wrapping spinning technology to form an inflaming retarding yarn; and the inflaming retarding yarn is produced into the inflaming retarding bast fiber fabric by using a weaving process. The inflaming retarding bast fiber fabric has the characteristics of simple production method, remarkable inflaming retarding performance, environmental friendliness, bacteriostasis and the like, and can be used in occasions such as home textile fabrics and decoration fabrics with a certain requirement for inflaming retarding and health care.

The invention belongs to the technical field of composition coatings and particularly relates to an antibacterial hydrophilic coating. The technical problem to be solved by the invention is to provide a coating having better antibacterial and hydrophilic effects. In order to solve the problem, according to the technical scheme, the antibacterial hydrophilic coating comprises the following components in percentage by weight: 30-50% of water-soluble acrylic resin, 3-10% of alcohols or ethers or ethers, 0.5-5% of a curing agent, 0.1-1% of a surfactant, 0.1%-1% of metals and antibacterial agents of oxides of metals and the balance of water. After a prime coating is subjected to high temperature curing and film forming, the combination of good antibacterial and hydrophilic functions is achieved.

The invention relates to the technical field of textile fibers and discloses a preparation method of flame-retardant and antibacterial precursor fibers. The method comprises steps as follows: material preparation, polypropylene dissolution, addition of an antibacterial agent, addition of a flame retardant, spinning and the like, wherein the antibacterial agent is composition of aluminum phosphate, calcium phosphate and aluminum triphosphate; the flame retardant is composition of ammonium bicarbonate, sodium bicarbonate, potassium bicarbonate and diatomaceous earth. The preparation method is simple and can be implemented by slight modification on existing production equipment, and the updating and modification difficulty is lower. The prepared precursor fibers are endowed with good flame retardance and antibacterial function on the basis that advantages of original acrylic fiber are kept.

The invention relates to an alga extract product with an antibacterial function, an antibacterial agent including the alga extract product, a composition, and a preparation method of the composition, and belongs to the technical field of antibacterial detergents. The composition contains the algal antibacterial agent, a surfactant, an antioxidant and water, and especially the algal antibacterial agent is selected from an alga extract product-anionic surfactant complex. The invention also discloses the preparation method and a use of the composition. Above detergents provided by the invention have the characteristics of no pollution to environment, safety and mildness to people, greenness and environmental protection, and facilitation of the safety of environment and human life.

An austenite stainless steel with excellent antisepsis feature is characterized in containing 0.0005-0.20wt% Ag and 2.5-4.5 wt% Cu at the same time, wherein Ag exists in the form of fine Ag grains, oxide or sulfide and Cu partially or most exists in the form of Cu-enriched deposit. The invention solves the problems in techniques, cost and properties by only adding antiseptic elements, which hence further improves the antisepsis functions of the materials and optimizes the comprehensive performances thereof.

The invention belongs to the technical field of biology, and especially relates to a polypeptide-silver nanometer cluster compound, and a preparation method and applications thereof. According to thepreparation method, the nanometer cluster compound is prepared from silver ions and a polypeptide, possesses excellent antibacterial activity and biological safety. It is shown by experiments that theminimum inhibition concentration of the polypeptide-silver nanometer cluster compound on Escherichia coli is 1<mu>g/mL, and the minimum inhibition concentration on staphylococcus aureus is 10<mu>g/L.

The invention discloses a preparing method of an antibacterial acrylic fiber color silk. Spinning, coloring and antibiosis finishing are finished in one step. The method comprises the steps of firstly, blending an antibacterial agent in a wet spinning dope, molding in coagulating bath by extruding to obtain primary acrylic fiber, and then performing anion dye gel coloring to prepare the antibacterial agent-loaded acrylic fiber color silk. The antibacterial function finishing and fiber coloring are realized in one step to prepare the acrylic fiber color silk with the antibacterial function, the antibacterial agent is introduced into polyacrylonitrile fiber by adopting a dope spinning method, the antibacterial effect is good and durable, and a post finishing process is reduced; the acrylic fiber color silk obtained by a gel dyeing method is good in color brightness, high in color fastness and capable of reducing dyeing sewage.

The invention provides a flame-retardant nanometer bamboo charcoal antibiosis filler fiber. The fiber comprises the following components, by mass, 1-20% of a nanometer bamboo charcoal antibiosis master batch and 80-99% of a sliced carrier. A manufacturing method of the fiber comprises the following steps: mixing the nanometer bamboo charcoal antibiosis master batch and the needed sliced carrier according to a certain ratio, uniformly stirring them, selecting a spinneret plate according to the fiber processing fineness and the section shape of the fiber, fusion-spinning, cooling, reeling, filament bunding, drafting, and spirally and curly cutting into short fibers to prepare the flame-retardant nanometer bamboo charcoal antibiosis filler fiber. The fiber of the invention has the advantages of substantial flame retardation and antibiosis, peculiar smell adsorption function possessing, soft handle, good elasticity, and wide application.