290results about How to "Good antibacterial properties" patented technology

The invention discloses a preparation method of a nano silver / poly dopamine composite membrane. The preparation method comprises following steps: phase inversion is adopted so as to prepare a polyether sulfone (PES) ultrafiltration basement membrane; the PES ultrafiltration basement membrane is immersed in a dopamine solution, and an ultrathin active layer is formed via deposition of poly dopamine onto the surface of the PES ultrafiltration basement membrane; in-suit introduction of nano silver onto the membrane surface is realized via silver nitrate postprocessing, and the nano silver / poly dopamine composite membrane is prepared. Advantages of the preparation method are that: compared with the preparation method of conventional nano silver composite membranes, poly dopamine is taken as a multifunctional unit, and construction of a separation layer, mineralization, and immobilization of nano silver are realized. The preparation method is green, simple, convenient, and controllable; the separation layer is obtained via water phase construction, and no organic solvent is needed; in-suit synthesis of nano silver is realized, and no chemical reductant or photo-initiation is needed. The nano silver / poly dopamine composite membrane possesses relatively high water flux, and excellent dye separation performance and antibacterial properties.

The invention discloses an edible fishskin collagen antibiosis membrane and a preparing method thereof, wherein fishskin collagen, chitosan, plant essential oil, soya bean lecithin and glycerol are contained in component of the membrane. The preparing method includes: firstly dissolving the fishskin collagen powder in distilled water to prepare fishskin collagen solution, dissolving the chitosan in chitosan solution prepared by acetic acid solution, dissolving the plant essential oil in distilled water of the soya bean lecithin to prepare plant essential oil solution, mixing the three solutions, adding in the glycerol as the plasticizer, evenly stirring, standing for degassing, and removing and spreading the obtained solution on an organic glass framework for drying to obtain the membrane. The edible fishskin collagen antibiosis membrane has good antibiosis performance, can be biodegraded, causes no pollution to the environment, can restrain growing of microorganisms on the surface of food and accordingly has the effect of food refreshment and shelf life extending.

A reverse-osmosis separating membrane with high resitance to scale deposit is prepared through hydrolyzing Ti compound in acidic aqueous solution to generate TiO2 nanoparticles, dispersing them in anaqueous solution (pH=1-6 or 9-13), and dipping the reverse-osmosis separating membrane in it for fixing said TiO2 nanoparticles on it.

The invention discloses a bacteriostatic hydrocolloid dressing and a preparation method thereof. The dressing comprises a polyurethane film, a hydrophilic colloid layer and a peeling layer which are adhered in turn. The preparation method comprises the following steps of: mixing a medical grade rubber substrate, gelatin, mineral oil, an antioxidant, sodium carboxymethyl cellulose, calcium alginate, a tackifier, O-carboxymethyl chitosan and dried nano-silver powder uniformly to obtain a blend; uniformly coating the obtained blend on the polyurethane film to form the hydrophilic colloid layer; covering the peeling layer on the hydrophilic colloid layer; and stamping to obtain the bacteriostatic hydrocolloid dressing. The bacteriostatic hydrocolloid dressing of the invention has high bacteriostasis, and simultaneously has the characteristics of high capacity of absorbing transudate, waterproofness, air permeability, firm adhesion, high compliance, capability of meeting diversified requirements on complicated wound, and simple and easily-implemented preparation method.

The invention discloses a composite antibacterial textile finishing agent, which consists of the following components of: an organic antibacterial active ingredient, an inorganic antibacterial active ingredient, a penetrating agent, an adhesive, a softening agent, a suspending aid and water. A preparation method comprises the following steps of: dissolving the penetrating agent, the adhesive, the softening agent and the suspending aid into the water to prepare solution at normal temperature under normal pressure; adding the organic antibacterial active ingredient and the inorganic antibacterial active ingredient into the solution, and quickly stirring the solution; and treating the solution by using a Nanomizer high-pressure homogenizer to obtain the finishing agent. An application method comprises the following steps of: selecting pure cotton or blended fabric, soaking the pure cotton or the blended fabric into the composite antibacterial finishing agent, and soaking and rolling with an open width padder; and conveying the pure cotton or the blended fabric into a drying oven of 100 DEG C, pre-drying for 180 to 300 seconds, and conveying the pure cotton or the blended fabric to a drying oven of 120 DEG C for setting so as to obtain an antibacterial textile. The finishing agent plays a role in killing bacteria such as escherichia coli, staphylococcus aureus, candida albicans and the like; and the prepared textile has good antibacterial performance and durable antibacterial effect, the original wearing property of the textile is not changed, and the textile has good handfeel.

The invention relates to a process for preparing cresol which comprises, feeding the stainless steel base material to be treated into ion implantation equipment for antibiotic ion implantation, then performing antibiotic treatment. The antibiotic ions are Cu or Au ions.

The invention relates to a medical disinfecting and sterilizing dressing raw material and a preparation method thereof, in particular to a silver-carried alginic acid fiber and a preparation method thereof. The preparation method comprises the following steps of: impregnating the alginic acid fiber in a water solution of nano silver with the concentration of 20-1000 ug / L, wherein the bath ratio is 1:10-200, and the impregnation time is 2-60 min; than, taking out the silver-carried alginic acid fiber absorbing elementary silver particles in an enrichment method, washing and drying the silver-carried alginic acid fiber through a water solution of organic solvent to obtain an alginic acid fiber with 0.01-4% of silver by weight and having good bulkiness and strong sterilization effect. The preparation method of the alginic acid fiber absorbing silver in an enrichment method provided by the invention has simple and feasible process, safe and nontoxic production process and practical application value.

The invention relates to an antibacterial latex prophylactic and a production method thereof. The antibacterial latex prophylactic is characterized by being produced by the following raw materials based on the parts by weight (dry ratio): 100 parts of centrifugal concentration natural latex, 0.1-0.3 part of potassium hydroxide, 0.1-0.5 part of ammonia water, 0.1-0.5 part of surface active agent, 0.5-1.5 parts of sulphur, 0.5-1.5 parts of vulcanizing accelerator, 1.0-1.5 parts of anti-aging agent, 0.2-1.0 part of zinc oxide and 0.5-1.5 parts of antibacterial agent. The protein content in the centrifugal concentration natural latex is less than 3.5%; the surface active agent is methylene dinaphthyl sodium sulfonate or nonyl phenol polyoxyethylene (9) ether; the vulcanizing accelerator is thiuram type accelerator; and the antibacterial agent is nano Ag-Zn composite antibacterial agent with oiliness carrier. The product of the invention can effectively change the comprehensive performance of an adhesive film, has the functions of sanitation and self-cleaning, generates inhibitory action for ordinary bacteria contacted with the product, and can kill the self bacteria of the product within a certain time.

The invention discloses an organosilicon quaternary ammonium long-acting antibacterial product and a preparation method of the organosilicon quaternary ammonium long-acting antibacterial product. The product comprises a first organosilicon quaternary ammonium antibacterial component, a second organosilicon quaternary ammonium antibacterial component and a third synergistic component, wherein the first organosilicon quaternary ammonium antibacterial component is dimethyl alkyl [3-(trimethoxysilyl) propyl] ammonium halide containing C10-C16 alkyl, and the halogen is preferably Cl (chlorine) and Br (bromine); the second organosilicon quaternary ammonium antibacterial component is dimethyl alkyl [3-(trimethoxysilyl) propyl] ammonium halide containing C18-C30 carbon chains, and the halogen is preferably F (fluorine), Cl (chlorine) and I (iodine); the third synergistic component is selected from a group comprising tea polyphenol, aloe and chitosan or a group comprising composition of polyphenol, aloe and chitosan. The antibacterial agent has broad-spectrum antibacterial performance, lasts long, is poisonless, has no irritation to the skin, is especially applicable to sensitive parts of the skin and is a good choice in daily life, wound treatment and operation assistance.

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 discloses absorbable antibacterial alginate fibers. The alginate fibers are prepared by utilizing a wet-process spinning technology; and after being improved by a cross-linking agent, the fibers have good antibacterial property and have adjustable and controllable biological absorbability. According to the fibers, the preparation method is simple and pollution to the environment cannot be caused; and the alginate fibers have good biological degradation property and antibacterial property, and are expected to be used for a plurality of fields including wound dressings, absorbable surgery suture lines, periodontal regeneration pieces, anti-sticking membranes, absorbable masks and the like.

The invention provides a preparation method and application of a nano copper-zinc compound antibacterial material, belongs to the field of environment engineering and particularly relates to the field of antibacterial materials. The prepared nano copper-zinc compound antibacterial material has a good sterilizing effect and can be used for preparing antibacterial paint. The preparation method of the nano copper-zinc compound antibacterial material specially comprises the following steps of dissolving zinc salt and copper salt into water to form a copper-zinc solution, adding absolute ethyl alcohol of the same volume as the copper-zinc solution and performing ultrasonic treatment to obtain a solution I; adjusting pH of the solution I as 5.5 to 6.7, adding citric acid monohydrate, stirring and performing ultrasonic treatment until the solution has no flocculation to obtain a solution II; heating the solution II in a water bath mode, stirring, centrifuging to obtain precipitation, washing the precipitation, drying, roasting and cooling to obtain copper-zinc complex; mixing the copper-zinc complex with graphene in an N,N-dimethylacetamide solution and performing ultrasonic treatment to obtain a solution III; centrifuging the solution III to obtain precipitation, washing the precipitation and drying to obtain the nano copper-zinc compound antibacterial matearil.

The invention discloses a high-strength polypropylene anti-bacterial plastic which comprises the following raw materials in parts by weight: 100 parts of polypropylene, 10-15 parts of high density polyethylene, 10-15 parts of low density polyethylene, 0.6-1 part of an antibacterial agent, 0.2-1 part of an anti-oxidant, 0.5-0.8 part of a compatilizer, 0.4-0.8 part of a dispersing agent and 10-15 parts of glass fibers, wherein the antibacterial agent comprises the following components in parts by weight: 3-10 parts of chitosan, 15-25 parts of nano titanium dioxide, 15-20 parts of nano zeolite and 5-10 parts of poly hexamethylene guanidine propionate. The anti-bacterial plastic has excellent bacteria resistance, and also has relatively high strength.

The invention discloses a composite hydrogel and a preparation method thereof, which utilize polyethylene glycol dimethyl acrylic esters as cross-linking agents, utilizes 2-hydroxyl-4-(2-hydroxyl ethoxy)-2-methyl propiophenone as an initiator, utilizes [2-( methacryloyloxyethyl) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA)) and polyethylene glycol methacrylate (polyethylene glycol (PEG)) as monomer light to trigger crosslinking and compound hydrogel. The composite hydrogel with different network structures can be prepared by adjusting and controlling different radios of SBMA and PEG monomers, thereby supplying an appropriate environment (wettability, breathability and low inflammation and the like) for late delivery or tissue-engineered repair. The method for preparing the composite hydrogel is simple, and the used SBMA and the PEG are all protein non-absorbed materials and are easy for long-term preservation and long-distance transportation.

The invention relates to a method for preparing hydroxyapatite loading Ag (HAP-Ag) and an application as an antimicrobial. The preparation method thereof mainly includes the following steps: hydrothermal reaction step, that is adding the hydroxyapatite to the mixed solution of the silver nitrate and the cerous nitrate, wherein the concentration of both the silver nitrate and the cerous nitrate is 0.01mol / L-0.2mol / L, the reaction temperature is 30 DEG C - 60 DEG C and the reaction time is 2-5 hours; the steps of depositing, sucking and filtrating, drying, and grinding. The novel preparation method of the HAP-Ag and the application as the antimicrobial have remarkable antimicrobial products with high durability, long-term antimicrobial effect, convenient usage, no toxin and harmlessness, so as to be applicable to pregnant women and babies.

The invention discloses a composite nano sliver polymer antibacterial micelle and a preparation method thereof. The antibacterial micelle takes polyethylene glycol and poly(acrylamide-co-acrylonitrile) with upper critical solution temperature (UCST) response characteristic as hydrophilic and lyophobic chain segments respectively; sliver ions are combined onto cyanogroup of a lyophobic inner core of the micelle by virtue of a coordination bond and reduced by sodium borohydride to generate nano sliver particles with an average diameter of 4 nanometers in situ, and the nano silver particles are uniformly dispersed into the micelle with the average diameter of 40 nanometers. The nano-sliver-modified polymer micelle has good biocompatibility, unique thermal response, excellent antibacterial performance, and can be used for effectively inhibiting and killing microorganisms such as escherichia coli.

The invention discloses an antibacterial and hemostatic multifunctional composite hydrogel dressing and a preparation method thereof. The hydrogel dressing comprises a component A hydrogel and a component B hydrogel, wherein the component A hydrogel comprises a carboxylic acid or carboxylic acid sodium salt, an amide, an aldehyde, a NaOH aqueous solution, and the like; and the component B hydrogelcomprises dopamine hydrochloride, a carboxylic acid or anhydride, a modified guanidine salt, mesoporous silica, a modified diamine, and the like. The preparation method is as follows: separately preparing the component A hydrogel and the component B hydrogel, and then compounding the component A hydrogel and the component B hydrogel. The component A achieves hemostatic effects by rapid swelling and absorption of large amounts of water in the blood; and the component B achieves hemostatic effects by quickly sealing damaged blood vessels. The hemostatic hydrogel dressing of the invention solvesthe problem that a single hydrogel cannot have high strength, strong adhesion and high water absorption performance at the same time, and realizes rapid hemostasis. At the same time, the hydrogel dressing has excellent antibacterial properties and can effectively inhibit wound infection.

The invention discloses an arrangement process for a knitted fabric. The arrangement process includes the steps: 1) adding 3.2 parts by weight of acrylic acid, 2.8 parts by weight of sodium polyacrylate and 4.3 parts by weight of polypropylene glycol into 18.6 parts by weight of deionized water to uniformly mix; 2) simultaneously and slowly adding 1.7 parts by weight of bock greenbrier rhizome extractive and 2.6 parts by weight of urea to continue to sufficiently and uniformly mix to obtain an arrangement agent; 3) padding the fabric in impregnation liquid with the arrangement agent, and drying the fabric by the aid of constant temperature. The arranged fabric has an excellent antibacterial performance and an excellent antifouling performance and is high in washing resistance.

The invention discloses a novel antibacterial and deodorant PVC shoe material. The PVC shoe material comprises, by weight, 15-45 parts of PVC resin, 5-10 parts of dibutyl phthalate, 3-8 parts of hollow glass bead, 8-15 parts of Rheum officinale, 2-6 parts of honeysuckle flower, 1-8 parts of Amur Corktree Bark, 5-10 parts of mint, 2-5 parts of a stabilizer, 1-3 parts of a cross-linking agent and 3-5 parts of a foaming agent. The invention also discloses a preparation method of the antibacterial and deodorant PVC shoe material. The PVC shoe material has the advantages of excellent antibacterial performance, lasting performances, good stability, good low temperature resistance, overcoming of the low temperature easy brittle rupture problem, non-toxicity, harmlessness to human body, simple preparation method, cheap raw materials and low cost.

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 provides a skin care isolation cream containing minerals and plant extracts, including: minerals, plant source extracts, biological extracts and auxiliary agents, the minerals are titanium dioxide, kaolin, mica, magnesium sulfate, chloride Sodium and zinc oxide, the plant source extracts are Centella asiatica extract, Polygonum cuspidatum root extract, Scutellaria baicalensis root extract, tea leaf extract, Glycyrrhiza glabra root extract, Chamomile flower extract, Rosemary leaf extract , purslane extract and grape fruit extract, the biological extracts are β-glucan, bio-glucose-1, allantoin, Saccharomyces cerevisiae extract, palmitoyl tripeptide-1 and hyaluronic acid sodium. The active ingredient of the skin care isolation cream prepared by the invention has a small particle size, is skin-friendly and closely adhered, is easy to absorb, is green and environmentally friendly, has the advantages of beautifying skin, sun protection and skin care, and has no toxicity and no side effects on the skin.

The invention discloses an antibacterial fabric and a preparation method thereof. Raw materials of the antibacterial fabric comprise spandex, kapok fibers, cotton fibers or tencel or modal fibers or linen fibers or bamboo fibers, melamine formaldehyde resin composite anti-bacterial fibers, nano silver coated fibers or silver silk, softener, a dispersing agent and an antibacterial agent. The invention further discloses a preparation method of the antibacterial fabric. Compared with the prior art, the antibacterial fabric obtained through adding and preparing has not only good antibacterial performance, but also good antiflamming performance.

Disclosed is an antibacterial surface decorative material and its preparation method, wherein the material comprises (by weight percentage) adhesive 100 parts, acicular zinc oxide crystal whisker antibacterial agent 0.1-10 parts, pre-dispersing agent 0.1-10 parts, auxiliary agent 0.1-5 parts. The preparing process consists of charging into a reaction kettle, stirring at 30-60 deg. C, and mixing the pre-dispersion system with other components.

The present invention relates to a bamboo fiber-reinforced material and a preparation method therefor. The bamboo fiber-reinforced material is prepared from the following components in parts by weight: 100 parts of polypropylene, 20-40 parts of bamboo fiber, 5-10 parts of a flexibilizer, 2-8 parts of a compatibilizer, 0.5-5 parts of an organic antibacterial agent, 5-20 parts of an inorganic antibacterial agent; 0.4-2.5 parts of coupling agent, 3-8 parts of a plasticizer, and 0.5-2 parts of an antioxidant. The bamboo fiber-reinforced material provided by the present invention uses the bamboo fiber that is high in an aspect ratio and has a certain antibacterial action as a reinforcing material. The bamboo fiber is matched with the inorganic antibacterial agent, the organic antibacterial agent, the plasticizer and other auxiliaries, so that the mechanical property of the bamboo fiber-reinforced material is improved, and simultaneously the material has a relatively good antibacterial property. The bamboo fiber-reinforced material provided by the present invention solves the problem that bamboo fiber-reinforced plastic is easily eroded and degraded by bacteria during long-term use, and the prepared bamboo fiber-reinforced material is relatively high in mechanical strength and antibacterial property.

An antibacterial polycarbonate material is disclosed. The material is prepared from, by weight, 100 parts of PC resin, 10-50 parts of glass fibers, 3-15 parts of a flexibilizer, 0.7-2.0 parts of an antibacterial agent, 0.4-1.0 part of a dispersant and 0.4-1.2 parts of an antioxidant. A preparing method of the antibacterial polycarbonate material is also disclosed. The method includes weighing 100 parts of the PC resin, 3-15 parts of the flexibilizer, 0.7-2.0 parts of the antibacterial agent, 0.4-1.0 part of the dispersant and 0.4-1.2 parts of the antioxidant, fully mixing the materials, adding the obtained material mixture and 10-50 parts of the glass fibers into a screw extruder, performing extrusion and granulation, and drawing and dicing the product by the screw extruder to obtain the material. The material has advantages of durable antibacterial performance, a low percentage of contraction, high rigidity, good toughness, and the like.

The invention relates to a novel in-situ cleaning agent and a preparation method thereof. The novel in-situ cleaning agent is prepared from the following components in percentage by mass: 50-60% of an inorganic acid (converted into percent content), 1-5% of an organic acid, 1-5% of a washing assistant, 2-20% of a nonionic surfactant and 1-5% of a foam control agent, 0.1-0.5% of a brush-type multi-quaternary ammonium salt and the balance of softened water, wherein the structural formula of the brush-type multi-quaternary ammonium salt is as shown in the specification. The novel in-situ cleaning agent has the characteristics of being good in detergency, strong in antibacterial effect, high in cleaning efficiency and low in corrosion, and is suitable for cleaning and bacteriostasis of a sterile filling line in food industry.

The invention relates to the technical field of anti-bacterial liquids, and in particular relates to a gynecological external antibacterial liquid and a preparation method thereof. The gynecological external antibacterial liquid per liter comprises the following raw materials: 1.7-1.9g of benzalkonium chloride, 30-60ml of glycerinum, 0.1-1.3g of menthol, 1-1.8g of alum, 3-6g of a traditional Chinese medicine extract and the balance of purified water. The liquid provided by the invention contains anti-inflammatory, anti-bacterial and pain-relieving components which are supplemented with one another, so that the bacteria inhibiting performance of the liquid is optimal through synergistic effect of the raw materials. The biocompatibility of the liquid is in accordance with the demand of GB / T16886.11-2011, and the microbiological indicator is in accordance with the demand of GB15979-2002. The liquid is suitable for various infections of body surface, vagina, leucorrhea, cervix uteri and cervix uteri and accelerates wound healing after physical treatment of cervical erosion, and is further suitable for daily vulva nursing of females as well as prevention, treatment and cleaning and nursing in puerperium, induced abortion, wound after vaginal side cut parturition, period and before and after sexual life.

The invention belongs to the field of paint and in particular relates to ultraviolet curable water-based antibacterial paint used for wooden products. The water-based antibacterial paint comprises the following raw materials in parts by weight: 40-65 parts of water-based polyurethane acrylate, 10-15 parts of rosin-based hyperbranched polyester acrylic resin, 5-10 parts of 1,6-hexanediol diacrylate, 5-10 parts of acrylic resin, 5-10 parts of nano aluminium oxide dispersion, 2-4 parts of photoinitiators, 0.2-0.5 part of levelling agent, 10-20 parts of water-based organic assistants, 0.2-0.5 part of anti-settling agent, 0.5-1 part of defoaming agent, 10-15 parts of graphene, 5-10 parts of nano titanium dioxide sol and 2-5 parts of silver ion solution. The water-based antibacterial paint can meet the requirements of high performance and environmental protection, has composite antibacterial ability and longer valid time, and has good compatibility with ultraviolet curable resin.

The invention relates to a method for preparing a PET (polyethylene terephthalate) weaving material provided with an anti-bacterial and mineralization-promoting functional coating by adopting an atomic layer deposition method. The method comprises steps as follows: preparation of the PET weaving material: PET silk threads are woven to form latticed, tubular, rope-shaped or other compound-shaped materials; surface treatment of the PET weaving material; atomic layer deposition of zinc oxide on the PET weaving material. The prepared PET weaving material has a good anti-bacterial property and a mineralization-promoting function and can be used for repair of ligaments contacted with bones or bone tissue; the method belongs to the field of biological materials, and the prepared material can be widely applied to tissue repair and drug delivery.

A kind of ferrite stainless steel with good antisepsis is disclosed. It contains C<0.1%, Si<1%,Mn<1.0%,Cr 10-30% ,Nb 0.01-0.5%,and allowance is Fe. It is characterized in that it contains 0.0005-0.10% Ag and 0.3-2.0% Cu simultaneously. Ag exists in form of tenuous, oxide and sulfide, 30-80% of Cu exists in form of precipitated phase. Simultaneous application of two antisepsis element not only strengthens antisepsis property of single antiseptic non-corrosive steel with Cu, but also solves difficulties in cost of antiseptic non-corrosive steel with Ag. The non-corrosive steel can be applied in the fields of accommodation, medication and public health.