92results about How to "Long-term antibacterial effect" patented technology

The invention relates to a cellulose and borneol compounded antibacterial material, and more specifically relates to a high-molecular structure obtained by modifying cellulose with borneol molecules. The surface of the cellulose and borneol compounded antibacterial material is capable of inhibiting adherence of microorganisms, so that antibacterial effects are achieved. The cellulose and borneol compounded antibacterial material is obtained via etherification of natural cellulose with a chloride acetylated borneol derivative, or via direct esterification of carboxymethyl cellulose with borneol. The cellulose and borneol compounded antibacterial material possesses high-efficient antibacterial effects, is simple in structure, is easy to prepare, and can be widely used in medical industry, health industry, environmental protection industry, or food industry.

The invention belongs to the field of veterinary parasites, and relates to coccidian oocyst culture preservative fluid and an application method thereof. The invention is characterized in that the culture preservative fluid takes polyhaxemethylenguanidine hydrochloride as a main ingredient. The application method of the coccidian oocyst culture preservative fluid comprises the following steps of: separating and purifying fresh coccidian oocysts from fowl dung or intestinal tract tissues containing the coccidian oocysts; adding an appropriate amount of a polyhaxemethylenguanidine hydrochloride solution; adjusting the density of the oocysts; controlling the depth of a culture medium; putting the culture medium in a shaking table to perform shaking culture; performing microscopic examination; stopping culture when the sporulation rate of the oocysts exceeds 85%; collecting the oocysts; adding an appropriate amount of the polyhaxemethylenguanidine hydrochloride solution again; and preserving in a refrigerator of which the temperature is 4 DEG C. The coccidian oocyst culture preservative fluid is efficient, long-acting and safe, pollution-free to the environment, simple to prepare and low in cost, and is ideal coccidian oocyst culture preservative fluid. By applying the application method provided by the invention, the operation is simple and convenient, the efficiency is high, the automation can be realized, and the coccidian oocyst culture preservative fluid is suitable for large-scale culture preservation of coccidian oocysts.

The invention relates to an environment-friendly flame-retardant non-adhesive fiberboard of crop straw and a preparation method thereof. The fiberboard is prepared by the following steps that 1 ) wheat straw and sorghum straw are taken to be cut off correspondingly, and the wheat straw and the sorghum straw are soaked in water to obtain a softened material; 2 ) steam explosion is correspondingly carried out on the softened material to obtain wheat straw fiber and sorghum straw fiber; 3 ) nano calcium carbonate, nano zinc oxide are mixed with nano copper oxide, and modifying is carried out toobtain a modified additive A; nano zinc borate, the nano zinc oxide are mixed with the nano copper oxide, and modifying is carried out to obtain a modified additive B; 4 ) the wheat straw fiber and the sorghum straw fiber are mixed with the modified additive A to obtain a core layer mixture; the wheat straw fiber is mixed with the modified additive B to obtain a surface layer mixture; and 5 ) thecore layer mixture is taken as a core layer, the surface layer mixture is taken as a surface layer to be laid and pre-pressed to obtain a slab, after hot-pressing forming and post-treatment are carried out, the environment-friendly flame-retardant non-adhesive fiberboard is obtained. The fiberboard has no formaldehyde release and has good mechanical property, good anti-water, moisture-proof, anti-corrosion and antibacterial properties; and good in fireproof and flame-retardant effects, and suitable for popularization and application.

The invention discloses a preparation method of a nano-silver antibacterial agent, and belongs to the field of antibacterial technology. Activated carbon is crushed and then mixed with phosphorus pentoxide, mixture is dispersed in absolute ethyl alcohol, the phosphorus pentoxide is dissolved in the ethyl alcohol to form phospholipid, the phospholipid is adsorbed on the surface of the activated carbon, calcium nitrate is slowly combined with hydroxy on a phospholipid hydrolysis product to form hydroxy calcium phosphate crystal nucleuses, the hydroxy calcium phosphate crystal nucleuses are adsorbed in pore structures of the activated carbon, agglomeration is avoided, the crystal nucleuses are washed, dried and then calcined, activated carbon cores are removed to obtain calcined materials with porous structures, the calcined materials serve as carriers, glucose serves as a reducing agent for reducing silver-ammonia solution, and generated nano-silver particles are adsorbed by the calcined materials with the porous structures, finally filtered, washed and dried in vacuum to obtain the nano-silver antibacterial agent. The nano-silver antibacterial agent is good in stability and uniform in dispersion in the use process and has high antibacterial endurance.

The invention provides an antibacterial and mildew-proof agent, mildew-proof starch glue, mildew-proof and antibacterial corrugated paper and a preparation method of the mildew-proof and antibacterialcorrugated paper. The antibacterial and mildew-proof agent is prepared from the following components in percentage by mass: 9-13% of octyl isothiazolinone, 13-18% of nano zinc oxide, 8-12% of emulsion and the balance of water. The mildew-proof starch glue is prepared from the following raw materials: tapioca flour, the antibacterial mildew-proof agent, caustic soda, a stabilizer, a strong adhesive and water. The mildew-proof and antibacterial corrugated paper comprises the surface paper layer, the middle layer and the inner paper layer which are sequentially arranged, and the surface paper layer and the inner paper layer are bonded with the middle layer through the mildew-roof starch glue. The mildew-proof and antibacterial corrugated paper has excellent waterproof effect and efficient broad-spectrum antibacterial and mildew-proof effect, can effectively prevent the corrugated paper from mildewing due to moisture absorption in a high-temperature and high-humidity environment, and wellkeeps the buffering and damping effect and the compression resistance effect of the corrugated paper.

The invention discloses an anti-pollution antibacterial reverse osmosis membrane as well as a preparation method and application thereof. The reverse osmosis membrane comprises a non-woven fabric, a polysulfone ultrafiltration membrane, a first polyamide layer formed on the polysulfone ultrafiltration membrane, and a second polyamide layer containing polyether amine and aminoglycoside antibioticsfor modification and having an anti-pollution antibacterial function. The reverse osmosis membrane prepared by the invention has excellent anti-pollution property on the basis of keeping permeation selectivity, meanwhile, aminoglycoside antibiotics endow the membrane with stronger antibacterial property, can effectively inhibit the attachment and growth of microorganisms, has better application prospect in the water treatment fields of industrial water supply, wastewater reuse and the like, and has broad application prospects. Meanwhile, the anti-pollution antibacterial layer also shows excellent binding force and can efficiently and durably exert the anti-pollution antibacterial function in practical application.

The invention relates to a female sanitary article for preventing and treating puerperal infection. The female sanitary article comprises base cloth adsorbing a liquid medicine for preventing and treating puerperal infection; the liquid medicine comprises the following active components in parts by weight: 10-30 parts of lithospermum extract, 10-30 parts of honeysuckle extract, 10-30 parts of moutan bark extract and 10-30 parts of golden cypress extract. The invention also provides a preparation method of the female sanitary article. The product provided by the invention has a remarkable effect in preventing and treating female sanitary article, is good in bacteria inhibiting stability after being placed for a long time, and thus has good market promotional value.

The invention discloses a preparation method of antibacterial glycopeptide hydrogel, the preparation method comprises the following specific steps: taking gulcomannan to react with sodium periodate, adding ethylene glycol to terminate the reaction to obtain oxidized gulcomannan, dialyzing and freeze-drying, and mixing with antibacterial peptide to react to obtain antibacterial peptide gulcomannan; reacting hyaluronic acid with 3-maleimidopropionic acid at room temperature to obtain esterified hyaluronic acid, dialyzing, freeze-drying, mixing with collagen peptide, carrying out addition reaction, dialyzing and freeze-drying to obtain collagen peptide hyaluronic acid; mixing the collagen peptide hyaluronic acid and the antibacterial peptide glucomannan to prepare the antibacterial glycopeptide hydrogel. The prepared hydrogel has good antibacterial performance on microbial bacteria such as gram-positive bacteria, gram-negative bacteria, fungi and the like, and the hydrogel is simple in preparation process, degradable and good in biocompatibility.

The invention discloses an anti-microbial and damp-proof down feather quilt which comprises a quilt cover layer, a face cover layer located in the quilt cover layer and a filling core wrapped by the face cover layer, wherein the filling core successively comprises a silk layer, a down feather layer and a cotton fiber layer and is characterized in that nanometer anti-microbial material layers are disposed among the silk layer, the down feather layer and the cotton fiber layer respectively. The anti-microbial and damp-proof down feather quilt disclosed by the invention is characterized in that the nanometer anti-microbial material is added in the middle layers; anti-microbial effects can be generated continuously for a long term; damage brought by bacteria can be prevented; physical health can be ensured; and the hard quilt has high filling power, high elasticity, resistance to washing and other characteristics.

The invention discloses a preparation method of a water-oil universal nano-silver antibacterial agent for an antibacterial coating. The preparation method comprises the following steps: S1, preparinga solution A formed from a silver-ammonia solution and distilled water, S2, preparing a solution B formed from maltose, PVP, a dispersing agent and distilled water, S3, slowly and uniformly mixing thesolution A and the solution B, S4, carrying out ultrasonic heat preservation treatment on the mixed solution to obtain nano-silver sol, S5, preparing nano red silver sol, S6, modifying the high-purity sepiolite powder to obtain slurry C, S7, modifying the graphene powder, adding the slurry C, and performing bead milling to obtain graphene modified sepiolite nano-silver antibacterial slurry, and S8, carrying out vacuum drying to obtain the powdery water-oil universal nano-silver antibacterial agent. The composite antibacterial agent compounded by the process has the characteristics of convenience in addition, wide application range and long-acting and excellent antibacterial effect, and has a wide application prospect.

The invention belongs to the technical field of non-woven fabric, and particularly relates to sepiolite functional non-woven fabric and a preparation method and application thereof. The sepiolite functional non-woven fabric is prepared from the following raw materials in parts by weight: 90-110 parts of fiber non-woven fabric, 30-50 parts of a carrier, 1-6 parts of nano-silica particles and 1-6 parts of chitosan; the carrier comprises attapulgite, activated sepiolite fiber, diatomite and a polyester amide compound, and the weight part ratio of the attapulgite, the activated sepiolite fibers, the diatomite to the polyester amide compound is 1: (1-3): (1-2): (0.5-2). By regulating and controlling the proportion of the carrier and other components, the defect that an existing non-woven fabricslurry coating is poor in air permeability or low in oxygen permeability on the basis that non-woven fabric has antibacterial, deodorizing and moisture absorption properties is effectively overcome,the functional non-woven fabric which is high in air permeability and oxygen permeability is prepared, high quality of the functional non-woven fabric is achieved, and the functional non-woven fabriccan be applied to medical cloth, surgical drapes, nursing pads, gypsum linings, outer fixed support linings and splint linings effectively, and the functional non-woven fabric is also suitable for being used in operation sterile towels, bed sheets, diapers and sanitary towels.

The objective of the present invention is to provide: an antibacterial coated object having an antibacterial activity value (based on JIS Z 2801: 2010) of a coating film of at least 2.0; an antibacterial paint; a method for producing an antibacterial paint; and a method for producing an antibacterial coated object. To achieve the objective, provided is an antibacterial coated object which has, ona substrate, a coating film of an antibacterial paint comprising at least: a ceramic composite powder including a photocatalyst component, an adsorbent component, and a metal component; and a binder,wherein the antibacterial activity value (based on JIS Z 2801: 2010) of a coating film is at least 2.0, and both or either of the following requirements (1) and (2) are/is satisfied. (1) With respectto the ceramic composite powder in the antibacterial paint, the volume-average dispersed particle diameter (D50) is at most 250 nm, and the ratio D90/D50 of the 90%-cumulative volume particle diameter(D90) to the volume-average dispersed particle diameter (D50) is at most 1.5, and (2) the film thickness of the coating film is at most 80 [mu]m, and the haze (based on JIS K 7136: 2000) of the antibacterial coated object or the coating film is at most 25.

The invention discloses an antibacterial PVC door seal for a refrigerator, and relates to the technical field of refrigerator door seals. The antibacterial PVC door seal comprises the following raw materials in parts by weight: 40-50% of PVC resin powder; 30%-40% of a combined plasticizer; 0.2%-2% of an antibacterial agent; 1.5%-5% of a heat stabilizer; 15%-25% of an inorganic filler; 1%-3% of a lubricating system; and 0.2%-2% of an oxidizing agent, wherein the antibacterial agent is polyhexamethylene guanidine, and the molecular formula of the antibacterial agent is (C7H16N3Cl) n. The antibacterial agent polyhexamethylene guanidine is added into the formula, and the antibacterial PVC door seal is obtained through proportion adjustment and processing so that the door seal can achieve a long-term antibacterial effect, and the problems that theexisting refrigerator door seal is poor in long-term antibacterial stability and low in sterilization efficiency are solved.

The invention relates to an antibacterial rubber-plastic product and a preparation method thereof. The antibacterial rubber-plastic product comprises the following components in parts by weight: a dispersing agent HT-5168, calcium stearate, stearic acid, polyethylene glycol, an anti-aging agent 4020, activated zinc oxide, sulfur powder, solid paraffin, antimonous oxide, zinc borate, carbendazim, N-octyl isothiazolinone, nitrile rubber buna, aluminum hydroxide, polyvinyl chloride resin, chlorinated paraffin, epoxidized soybean oil, carbon black N550, azodicarbonamide and a rubber accelerator. The antibacterial rubber-plastic product has the advantages of simple preparation process, convenience and speediness in production, low cost and safety in use, and can realize antisepsis and sterilization, and reduces the environmental pollution.

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 the technical field of personal care products, in particular to powerful bacteriocidal and bacteriostatic hand wash. The hand wash comprises cationic surfactant, nonionic surfactant, alcohol, glycerin, disodium hydrogen phosphate-sodium dihydrogen phosphate buffering liquid, compound hydrolase, powerful bacteriocidal agent, pigment, essence and deionized water, wherein thepowerful bacteriocidal agent is substances extracted from various traditional Chinese medicine materials and containing various polypeptide, polysaccharide and alkaloid, the cationic surfactant is fatty alcohol polyoxyethylene ether phosphate monoester, fatty alcohol polyoxyethylene ether sodium sulfate or sodium dodecyl benzene sulfonate, and the nonionic surfactant is lauroylmonoethanolamide, glycol stearate or coconut oil diethanolammide. The hand wash has good degreasing performance and good bacteriocidal, bacteriostatic and anti-inflammation effects and is skin-friendly, free of causinginjury to hands, environment-friendly and safe.

The invention belongs to the technical field of building mould prevention and discloses an inorganic wall coating mould eliminating and preventing spray. The inorganic wall coating mould eliminating and preventing spray is prepared from raw materials including, by weight part, 100 parts of calcined shell powder, 20-25 parts of gypsum, 30-40 parts of white carbon black, 10-15 parts of polyvinyl alcohol, 10-15 parts of dispersing agent, 10-15 parts of titanium dioxide, 11-15 parts of montmorillonite long-acting mould inhibitor, 40-50 parts of absolute ethyl alcohol and 100-130 parts of water. The inorganic wall coating mould eliminating and preventing spray integrates bactericidal and antibacterial effects through harmless components, thereby achieving rapid sterilization as well as long-time bacteria inhibition. The inorganic wall coating mould eliminating and preventing spray is well in compatibility to inorganic wall materials and achieves beautifying effects, and can be firmly attached to wall surface without stripping and falling off.

The invention provides a preparation method and application of novel adhesive antibacterial temperature-tolerant functional hydrogel. The multifunctional hydrogel is prepared by reacting antibacterial macromolecules with gelatin and acrylamide, has excellent adhesion and mechanical properties, has lasting antibacterial property for more than 7 days, keeps various excellent properties in a relatively wide temperature range (-20 DEG C to 60 DEG C), particularly has antibacterial property in a wide temperature range, and can preserve moisture for a long time. The novel adhesive antibacterial temperature-tolerant functional hydrogel is used for dressing of acute/chronic wounds and tissue regeneration auxiliary materials in different environments.