71results about How to "Long lasting antibacterial effect" patented technology

The invention relates to a long-effective bacteriostatic composition and a preparation method and application thereof. The long-effective bateriostatic composition comprises the following components of, by weight, 10-50 parts of polyhydric alcohol, 0.1-2 parts of a thickening agent, 0.5-5 parts of a preservative, 1-5 parts of a natural plant extract, 0.1-0.5 part of a chemical bacteriostatic agent and 10-50 parts of water, wherein the natural plant extract is a water extract of a mixture obtained by mixing chamomoile, tea and bamboo leaves at a mass ratio of 1:1:1. The bacteriostatic composition adopts the natural plant extract as the bateriostatic agent, the using amount of the chemical bateriostatic agent is reduced greatly, the bateriostatic composition is free of stimulating to skin, high in safety, long effective and durable in bateriostatic effect.

The invention discloses an antibacterial paint, antibacterial paper, a preparation method of the antibacterial paint, and a preparation method of the antibacterial paper. The antibacterial paper comprises a paper layer and an antibacterial paint layer arranged on the surface of the paper layer, wherein the antibacterial paint layer is a mixture layer of antibacterial ingredients and paints, and the antibacterial ingredients contain one or more of chitosan, tea tree essential oil, nanometer zinc oxide, silver nanometer antibacterial powder and nanometer titanium dioxide. Through the manner, the antibacterial paper which is environmental-friendly and has a lasting favorable antibacterial effect can be obtained.

The invention discloses a preparation method for blended yarns of hemp cotton and antibacterial fibers. The preparation method comprises the following steps: (1) blending prepared hemp cotton blended fibers with the antibacterial fibers in proportion, obtaining roving through stranding and twisting, spinning raw roving after mixing and matching, and then scouring and bleaching the roving; (2) carrying out half-degumming on the roving; (3) carrying out bleaching and dechlorination; (4) before dyeing, performing biological enzyme pretreatment; (5) performing softening and drying; (6) after dyeing and after-treatment processes, spinning spun yarns; (7) carrying out radio frequency drying, picking, spooling and packing for the spun yarns and humidifying the health knitting yarns, thus obtaining the blended yarns of the hemp cotton and antibacterial fibers. The blended yarns of the hemp cotton and antibacterial fibers disclosed by the invention have the characteristics of being obvious and lasting in antibacterial effect, capable of killing or inhibiting breeding of pathogenic bacteria to protect body health, excellent in antibacterial and anti-mould effects, good in stability and elasticity, soft in hand feelings, less in residues and harmless to human bodies.

The invention relates to a method for purifying and removing bacteria by using silver ions. The method comprises the following steps: preparing the silver ions; inspecting a harm value of the silver ions to the human body; inspecting the sterilization effect of the silver ions; inspecting the antibacterial durability of the silver ions; and if the silver ions pass the inspections, placing the silver ions into water of a swimming pool or a computer keyboard so as to achieve purification and bacterial removal for the water of the swimming pool or the computer keyboard. Compared with the prior art, the method used for purification and bacterial removal for the water of the swimming pool can reduce the harm of the water of the swimming pool to the human body and eyes; and meanwhile, the methodapplied to the computer keyboard can have long-term antibacterial efficacy.

The invention discloses a preparation method of silk fibroin nanofibers and a preparation method of a silver-loaded antibacterial dressing based on the silk fibroin nanofibers. The preparation methodof the silk fibroin nanofibers comprises the following steps: 1) putting silkworm cocoons into a sodium carbonate solution, and performing degumming to obtain silk fibroin; 2) dissolving the silk fibroin in a sodium hydroxide/urea aqueous solution to obtain a dissolved solution; 3) putting a dialysis bag into a sodium bicarbonate/EDTA solution, performing boiling treatment, taking out the dialysisbag, putting the dialysis bag into an EDTA solution, and performing boiling treatment; and 4) pouring the solution obtained in the step 2) into the treated dialysis bag, performing dialysis, performing ultrasonic treatment, and performing freeze centrifugation to obtain the silk fibroin nanofiber aqueous solution. The invention also discloses the preparation method of the silver-loaded antibacterial dressing, and the method comprises the following steps: 1) preparing the silk fibroin nanofiber aqueous solution by using the above method; 2) dissolving silver nitrate in the obtained silk fibroin nanofiber aqueous solution, wherein the mass-to-volume ratio of the silver nitrate to the silk fibroin nanofiber aqueous solution is 0.02%-0.08%, and performing irradiation from the cup bottom underultraviolet conditions; and 3) after the ultraviolet irradiation is completed, performing pre-cooling, performing freezing, and finally performing vacuum freeze drying to obtain the silver-loaded antibacterial dressing.

The invention discloses a special disinfectant for a Hu sheep farm and relates to the technical field of Hu sheep farming. The special disinfectant is prepared from raw materials in parts by weight as follows: 40-45 parts of common andrographis herbs, 30-35 parts of nettle leaves, 25-30 parts of sandalwood leaves, 25-30 parts of ginkgo leaves, 20-25 parts of balsam pear leaves, 15-20 parts of falsehellebore roots and rhizomes, 15-20 parts of honeysuckle flowers, 12-16 parts of isatis roots, 10-15 parts of wild perilla stems, 10-15 parts of leaves of Zanthoxylum armatum DC., 8-12 parts of a deodorant additive, 8-12 parts of Chinese leek roots, 7-11 parts of dandelions, 5-8 parts of castor seeds, 3-5 parts of chilli seeds, 6-10 parts of calamine, 5-9 parts of paeonol, 4-8 parts of potassium peroxymonosulfate, 3-6 parts of sulphur and 50-60 parts of ethanol. The prepared disinfectant has the characteristics of high sterilization speed and lasting anti-bacterial effect, provides safety guarantee for healthy growth of Hu sheep, has high usage safety and causes no pollution to the environment; besides, the disinfectant smells fragrant and is free of pungent traditional Chinese medicine smells, and odors can be effectively removed through addition of the deodorant additive, so that the air quality of a sheep pen is improved.

The invention discloses an antibacterial non-woven material and a preparation method thereof, and belongs to the technical field of non-woven material preparation. The antibacterial non-woven materialcomprises 80-120 parts of polypropylene, 0.5-2 parts of an initiator A, 0.1-2 parts of an antioxidant, 1-3 parts of an antibacterial agent, 3-10 parts of electret master batch, 0.1-2 parts of a nucleating agent and 10-20 parts of LMPP, wherein the antibacterial agent is a silver ion antibacterial agent or a zinc ion antibacterial agent; the preparation method comprises the following steps: mixing, melt extrusion, mixing homogenization and melt-blowing molding, wherein the antioxidant is added into the tenth heating section of an extruder with 13 heating sections. The antibacterial non-woven material product can be used for preparing medical consumables such as masks and operation caps, can also be used for manufacturing female hygienic products, has a long-acting and lasting antibacterialeffect, and is higher in safety when being in direct contact with skin or wounds. Besides, the antioxidant is added into the tenth heating section so that the controllability of the melt index can beimproved, the consumption of the initiator A can be reduced, and the oxidation resistance of the product can be improved.

The invention discloses an antibacterial laundry detergent. The technical scheme is mainly characterized in that the antibacterial laundry detergent comprises components in parts by weight as follows: 50-150 parts of an anionic surfactant, 20-200 parts of a nonionic surfactant, 5-40 parts of a cationic surfactant, 50-150 parts of a solvent, 1-10 parts of an anti-redeposition component, 1-10 parts of a thickener, 1-50 parts of a disinfectant, 1-3 parts of a high-activity cerium silver mesoporous composite antibacterial agent and 1-3 parts of nano-TiO2 antibacterial agent. The antibacterial laundry detergent is characterized in that the high-activity cerium silver mesoporous composite antibacterial agent is added to the antibacterial laundry detergent, and an antibacterial active material can be dispersed in a sterilization-requiring environment uniformly through combination of a mesoporous material and the antibacterial active material, so that bacteria on clothing can be killed effectively; the nano antibacterial agent is added to the antibacterial laundry detergent, after washing, the nano-TiO2 antibacterial agent can be partially attached to the clothing and has a lasting antibacterial function, and accordingly, a long-acting antibacterial effect is obtained.

An antibacterial polycarbonate composite material is disclosed. The composite material includes, by weight, 100 parts of polycarbonate, 0.01-5 parts of a nanometer metal oxide, and 0.01-5 parts of a silicon-containing polymer, with content of silver ions based on the total weight of the composite material being 100-1200 ppm. The nanometer oxide and the silicon-containing polymer are synergistic toachieve dispersion and migration effects so that the silver ion concentration increases in a gradient manner from inside to the surface of the material, and along with abrasion of the material surface, the silver ions inside the material migrate to the surface along with the silicon-containing polymer at a uniform speed so that the material maintains good continuous antibacterial effects, and therefore, the dosage of the silver ions can be reduced, and the composite material has good appearance, good color stability, good antibacterial performance, and other advantages.

The invention discloses a raccoon dog fur semi-worsted blend functional health yarn. The raccoon dog fur semi-worsted blend functional health yarn consists of the following components in percentage by weight: 10-30% of raccoon dog fur fibers, 10-30% of grey bamboo carbon fibers, 10-30% of antibacterial deodorant acrylic fibers, 10-35% of wool fibers, and 10-35% of cashmere fibers, wherein the performance indexes of the blended yarn are as follows: single yarn breaking strength of 11.0-18.5 cN/tex, a single yarn breaking strength variable coefficient Cv value of 7.3-15.2%, and a yarn evenness variable coefficient Cv value of 14.9-21.2%. The raccoon dog fur semi-worsted blend functional health yarn disclosed by the invention is lasting in antibacterial effect and has health care functions of being antibacterial, bacteriostatic, deodorant, skincare and body-building, skin-moistening, good in nature to skin, deodorized, good in comfort and the like.

The invention relates to antibacterium paint and a preparation method thereof. 0.1-20 percent of conductive macromolecule polyaniline nanometer powder doped with inorganic acid or organic sulfoacid is added into a paint base body according to the weight percent. The preparation method of the antibacterium paint comprises the following steps: adopting the conductive macromolecule polyaniline nanometer powder doped with inorganic acid or organic sulfoacid as raw materials, grinding the conductive macromolecule polyaniline nanometer powder doped with inorganic acid or organic sulfoacid, sieving by a 100-500 mesh standard sieve, continuously grinding the raw materials which are not sieved, repeating the sieving step, mixing the sieved raw materials with the paint base body, and ball-milling mixture for 6-8h by a ball mill. The invention has remarkable antibacterium effect, good product stability, simple preparation process and wide application range without toxic and side effect.

The invention discloses a plant type washing-free hand sanitizer. The plant type washing-free hand sanitizer comprises the following components in percentage by mass of 0.4-0.9% of alkyl polyglycoside, 0.2-0.4% of a preservative, 0.1-0.2% of quaternary ammonium salt, 0.01-0.05% of essence, 0.02-0.08% of sodium citrate, 0.005-0.015% of citric acid, 0.5-1.0% of a hydrating agent, 0.5-1.0% of a plantextract and the balance water. The plant extracts are respectively a thyme extract, a purple perilla extract, a common lantana leaf extract and a railway beggarticks extract, and the mass ratio of the hydrating agent to the thyme extract to the purple perilla extract, to the common lantana leaf extract to the railway beggarticks extract is 5:2:1:1:1. The washing-free hand sanitizer can realize efficient long-acting sterilization, can restrain breeding of bacteria, can effectively protect skin safety, and has the effects of washing and moisturizing skin. The preparation method is simple, easyfor mass production and free from pollution in the preparation process.

The invention discloses antibacterial nonwoven fabric and a preparation method thereof. The antibacterial nonwoven fabric is prepared from raw materials in percentage by mass as follows: 40%-60% of polypropylene fibers and 60%-40% of copper modified polyester fibers. The preparation method comprises steps as follows: 1) the polypropylene fibers and the copper modified polyester fibers are weighed according to a formula; 2) raw materials are simultaneously placed in a feed box and automatically and uniformly mixed; 3) the mixed material is carded, and a net-like semi-finished product is obtained; 4) an upper roller and a lower roller are arranged, the temperature of the rollers is set at 120-150 DEG C, and the net-like semi-finished product is conveyed to the rollers for hot pressing; 5) a finished product is obtained. The technological process is simple, and resources are saved; the copper modified polyester fiber has antibacterial, sterilizing, bacteriostatic, deodorizing and anti-mite effects, so that the nonwoven fabric has sterilization efficacy, a good antibacterial effect, a lasting bacteriostatic effect, high stability and safety and good breathability and water absorption, and can be widely applied to the fields of various hygienic auxiliaries of hospitals, home, clothes, masks, baby products and the like.

The invention relates to an antibacterial liquid detergent. The antibacterial liquid detergent comprises a surfactant system and an antibacterial agent, the surfactant system is any one or a combination of more than one of an anionic surfactant, a nonionic surfactant and an ampholytic surfactant; the antibacterial agent is a composition comprising cannabidiol and a silver antibacterial agent. Compared with the prior art, the antibacterial liquid detergent possesses following advantages: the anionic surfactant, the nonionic surfactant and the ampholytic surfactant are combined, so that the purpose of decontamination is achieved; cannabidiol in the antibacterial agent can effectively stabilize the silver antibacterial agent, and enhance the effect of the silver antibacterial agent, so that the antibacterial capacity of the antibacterial liquid detergent is better.

The invention discloses an antibacterial barrier BOPET film and a preparation method thereof, and relates to the technical field of BOPET films, wherein the BOPET film is composed of an upper surfacelayer, a core layer and a lower surface layer; the upper surface layer and the lower surface layer are antibacterial layers and are prepared from the following raw materials: silver-loaded carbon nanotubes, glass beads and polyester chips; and the core layer is a barrier layer and is prepared from the following raw materials: EVOH, nano montmorillonite and polyester chips. According to the invention, the formula is optimized and the process parameters are adjusted; on the basis of ensuring good physical and mechanical properties and optical properties, the prepared BOPET film is excellent in antibacterial and barrier properties, the antibacterial rate reaches 99%, the oxygen diffusion coefficient is only 1/3 of that of a common BOPET film, and the BOPET film can be widely applied to the fields of food packaging and other industrial packaging.

The invention relates to a method for preparing polysaccharide selenium copper having a bactericidal effect and belongs to the field of macromolecule complexation. Polysaccharide is co-heated with seleninic acid in a faintly acid aqueous solution to generate polysaccharide selenide; under neutral conditions, and the polysaccharide selenide and copper ions are processed through a co-heating method to prepare a polysaccharide selenium copper complex. The complex can be used as a food antimicrobial agent, a functional bio-fertilizer or a plant fungicide and have a bactericidal effect of selenium and copper, polysaccharide has effects of growth promotion, stress resistance, antivirus and property of film forming on plant surfaces, and the polysaccharide selenium copper can perform sterilization, prevent disease and promote crop growth.

The invention relates to an oral gel, in particular to an oral care gel with a lasting helicobacter pylori resisting effect. The oral care gel comprises the following components in percentage by mass:0.05%-0.2% of a bactericide, 1%-5% of a surfactant, 5%-1.5% of carboxymethyl cellulose, 0.1%-0.3% of ammonium polyacryloyldimethyl taurate, 0.1%-0.5% of isopropyl myristate, 0.05%-0.5% of glycyrrhizic acid, 0.05%-0.3% of menthol, 0.5%-5% of xylitol, trace of nano platinum, and the balance of purified water. A preparation method comprises the following steps that the purified water is divided intotwo parts according to a formula, one part is added into carboxymethyl cellulose and ammonium polyacryloyldimethyl taurate, and stirring and dissolving are conducted for 30-40 minutes until the purified water becomes transparent gel, so that a system A is obtained; the surfactant, the glycyrrhizic acid, the xylitol and the menthol are added into the other part of purified water, and stirring is conducted at the temperature of 40-50 DEG C until dissolution is completed to obtain a system B; the bactericide, nano platinum and isopropyl myristate are added into the system B, and uniform stirringis conducted to obtain a system C; and the system C is added into the system A under a stirring condition, and uniform mixing is conducted to obtain the oral care gel capable of continuously acting.

The invention discloses a preparation method of an aromatic, antibacterial and waterproof non-woven fabric and belongs to the field of textile engineering. The provided preparation method comprises the steps of (1) wrapping an antibacterial agent in a stable siliceous body formed by organic and inorganic composite lipid; (2) completely dissolving a certain amount of chitosan and polyethylene oxidein a 90% acetic acid solution, and uniformly stirring the mixture to obtain a spinning solution; (3) adopting the spinning solution for carrying out electrostatic spinning to obtain a chitosan/polyethylene oxide nanofiber; (4) soaking the nanofiber in an antibacterial siliceous body solution for a grafting reaction, treating the nanofiber by a plasma processor, and then air-drying the nanofiber;(5) soaking the air-dried nanofiber in an ethanol solution containing organic and inorganic composite lipid, carrying out negative-pressure flash explosion, washing the nanofiber with water, and performing drying at the high temperature to obtain the aromatic, antibacterial and waterproof non-woven fabric. The non-woven fabric has the advantages of lasting antibacterial effect, good waterproof performance and certain plant fragrance.

The invention relates to the field of food packaging, in particular to a food packaging material capable of keeping fresh and resisting bacteria for a long time. The invention discloses a food packaging material capable of keeping fresh for a long time and resisting bacteria. the material is prepared from the following specific components in parts by weight: 10 to 80 parts of polylactic acid, 10 to 50 parts of polycaprolactone, 10 to 30 parts of polymethyl ethylene carbonate, 5 to 20 parts of chitosan, 1 to 8 parts of gelatin, 0.1 to 1 part of fennel leaf extract, 0.5 to 3 parts of Ti powder,0.1 to 2 parts of AlCl3 particles and 1 to 5 parts of a plasticizer. According to the invention, the problem that the application of the traditional disinfectant or antibacterial agent in food packaging is limited due to certain toxicity is solved. The food packaging material disclosed by the invention not only has good fresh-keeping and antibacterial effects, but also has excellent mechanical properties, and is an environment-friendly product which is non-toxic to human bodies and is environment-friendly.

The invention discloses a preparation method for a cotton fabric with bactericidal and bacteriostatic functions, and the prepared fabric, belonging to the field of textile technology. The preparationmethod comprises the following steps: extracting berberine from coptis; weighing cotton fibers, placing the cotton fibers in an aqueous NaOH solution with a pH value of 8.5, and carrying out soaking at a temperature of 30-40 DEG C; then carrying out washing until the cotton fibers are neutral, adding berberine according to a mass ratio of the cotton fibers to berberine of 100: (1-3), setting a bath ratio of 1: 20, introducing nitrogen, and successively carrying out temperature-regulated reactions, washing and drying so as to obtain the antibacterial cotton fabric. The bactericidal cotton fabric prepared in the invention has good bactericidal and bacteriostatic action and a wide antibacterial spectrum, can maintain excellent characteristics for a long time, is washable, and maintains good antibacterial effect after repeated washing.

The invention relates to a self-antibacterial type high-bonding strength melamine resin adhesive and a preparation method thereof. The adhesive comprises the following constitution components in partsby weight: 40.0-85.0 part of formaldehyde, 20.0-40.0 parts of urea, 15.0-25.0 parts of hydrazine hydrate, 10.0-25.0 parts of melamine, 0.2-0.8 part of a sodium hydroxide solution, 0.4-2.0 parts of anammonium chloride solution, 3.0-8.0 parts of a silane coupling agent, 5.0-10.0 parts of N,N,N-triethyl-N-(3-formyl-4-hydroxyl benzyl) ammonium chloride quaternary ammonium salt, 1.0-4.0 parts of polyvinyl alcohol, 0.5-3.0 parts of acrylamide and 4.0-10.0 parts of ammonium hydroxide. The self-antibacterial type high-bonding strength melamine resin adhesive provided by the invention has good and long-lasting antibacterial property, high in bonding strength, very low in formaldehyde release, good in wearing resistance, excellent in water resistance, good in aging resistance, good in chemical drug resistance, and the like, needs no external antibacterial agents and is long-lasting in antibacterial effect.

The invention discloses an anti-bacterial sole material which comprises the following components in parts by weight: 3-4 parts of aluminic acid ester, 1-2 parts of phenyl silicone oil, 6-7 parts of olive oil, 3-4 parts of vinyl trimethoxy silane, 2-3 parts of calcium sulfate, 5-6 parts of isoprene rubber, 3-4 parts of polybutadiene rubber, 4-5 parts of carbon black, 1-2 parts of butadiene-styrene rubber, 3-4 parts of diethylene glycol, 1-3 parts of dibutyl ether, 1-2 parts of dicumyl peroxide, 2-3 parts of dimethyl formamide and 2-3 parts of magnesium oxide. A sole prepared by using the anti-bacterial sole material disclosed by the invention is moderate in elasticity and rigidity and achieves effective and lasting anti-bacterial effect.