58results about How to "Good antibacterial durability" patented technology

The invention relates to a water-soluble chitosan quaternary ammonium salt antibiotic finishing agent. The invention is characterized in that the antibiotic finishing agent is names as O-methacrylamide-N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan and the concrete structural formula is as follows. The preparation thereof includes that: alkyl dimethyl tertiary amide and epichlorohydrin are taken as raw materials to synthesize 2, 3-epoxy alkyl dimethyl ammonium chloride, then the 2, 3-epoxy alkyl dimethyl ammonium chloride is introduce onto the ammonium group of chitosan, so as to obtain N-hydroxypropyl alkyl dimethyl ammonium chloride chitosan HDCC, and then crosslinking is carried out on the HDCC and hydroxymethyl acrylamide is carried out, thus obtaining NMA-HDCC. The quaternary ammonium salt antibiotic finishing agent contains water-soluble group and fibrous reactivity group and has good water solubility, the bacterial inhibition rate of finished cotton fabrics is close to 100%, and the finishing agent can be combined with cellulose fiber by covalent bond and is wash-resistant; and cost is low, raw material is environmental friendly, environmental pollution is less, thus having industrialization application prospect.

The invention relates to clothing degerming liquid and a preparation method thereof. The method comprises the following steps of: preparing mesoporous silicate nano-silver-loaded antibacterial agent suspension; preparing microemulsion containing an organic antibacterial agent; and adding and mixing an emulsifier, a chelating and anchoring stabilizer, a softener and a thickener. The clothing degerming liquid disclosed by the invention has high using safety, clothing degerming rate of over 99 percent and high stability. Due to the adoption of the clothing degerming liquid, after clothes are washed by water for 20 times, the antibacterial ratio of the clothes is still over 90 percent. The clothing degerming liquid has excellent antibacterial and durable performances, is non-toxic, has no irritation on the skin and has a deodorization effect on fabrics. The clothing degerming liquid disclosed by the invention has simple production process and low equipment investment, is easy for industrial production, is environmental-friendly and has strong market competitiveness.

The invention discloses a preparation method of a nano-silver alginate fiber. The preparation method comprises the following steps of: preparing an alginic acid silver complex which is a precursor of nano-silver by using algal polysaccharides and soluble silver salts, and then preparing a sodium alginate based nano-silver colloid system through a chemical reduction method; then adding fiber-grade sodium alginate into the sodium alginate based nano-silver colloid system to obtain a nano-silver algae spinning solution; and finally, obtaining a nano-silver algae primary fiber through wet spinning, and carrying out stretching, sizing, drying and oiling treatments to obtain the nano-silver alginate fiber. The prepared nano-silver alginate fiber integrates the excellent performances of the nano-silver and the alginate fiber, so that the novel fiber has excellent flame retardance, biocompatibility, moisture absorption permeability and the like, also has excellent antimicrobial performance, antistatic performance and irradiation resistance and can be widely used in medical treatment, the fire-fighting field, the military field, the aerospace field, the health textile field and the like.

The present invention is pyridyl quaternary ammonium salt antiseptic and its preparation process. The pyridyl quaternary ammonium salt antiseptic is 4-phenylamido-1-polyalkyl pyridyl ammonium halide or 4-(1 or 2-naphthyl amido)-1-polyalkyl pyridyl ammonium halide. It is used in antiseptic finishing of protein fiber, acrylon and other fiber. The preparation process includes the following steps: 1. setting benzoyl chloride or naphtholyl chloride inside acetone as organic solvent, cooling to 1-5 deg.c, adding 4-aminopyridine to react for 2 hr to obtain benzoyl aminopyridine or naphtholyl aminopyridine, filtering and stoving; and 2. dissolving the product of the last step in N, N-dimethyl sulphoxide solvent, adding alkyl halide, heating to 100-120 deg.c to react for 4-5 hr to obtain 4-phenylamido-1-polyalkyl pyridyl ammonium halide or 4-(1 or 2-naphthyl amido)-1-polyalkyl pyridyl ammonium halide, and vacuum drying.

The invention discloses a self-cleaning antibacterial fluorocarbon coating which comprises the following components in parts by weight: 40-60 parts of fluorine-containing polyacrylate resin, 5-13 parts of a silane coupling agent, 1-6 parts of amino resin, 3-15 parts of titanium dioxide, 2-6 parts of calcium carbonate, 10-28 parts of modified nano titanium dioxide, 2-6 parts of silicon nitride, 2-8 parts of zinc molybdate, 5-10 parts of 2,2,4-trimethyl-1,3-pentanediol isobutyrate, 0.3-1.2 parts of 5-chloro-2-methl-4-isothiazolin-3-ketone, 0.2-1.2 parts of defoaming agent, 0.5-1.8 parts of wetting agent, 0.3-0.8 parts of flatting agent, 0.6-1.5 parts of a curing agent and 30-60 parts of a solvent. The self-cleaning antibacterial fluorocarbon coating disclosed by the invention is high in self-cleaning ability and good in antibacterial property and can be applied in building outer walls.

The invention discloses a scrubbing-resistant anti-microbial inner wall emulsion paint. The emulsion paint comprises raw materials: modified PVA, methyl methacrylate, polymethyl methacrylate, light calcium carbonate, talcum powder, lithopone, calcined kaolin, hydroxyethyl cellulose, a dispersant SN-5040, a dispersant SN-5027, a multifunctional auxiliary agent AMP-95, 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate, an antifoaming agent NXZ, negative ion-anti-microbial additives, sodium polyphosphate, a flatting agent, a nano stain-resistant agent NZM-1, propylene glycol, 5-chloro-2-methyl-4- isothiazolin-3-ketone and deionized water. The inner wall emulsion paint is not easy to generate powder, has good scrubbing resistance and stain resistance, is safe and environmentally friendly, and has a long anti-microbial validity period.

The invention discloses paint used for cosmetic packaging bottles, and a preparation method and coating technology thereof. The paint includes waterborne resin emulsion, a filling material, an auxiliary agent, a barrier-type antibacterial agent and deionized water; the waterborne resin emulsion is formed by amino silicone oil modified acrylic resin emulsion and montmorillonite modified waterbornepolyurethane emulsion according to a mass ratio being 1 : 1-1.2 through mixing; the barrier-type antibacterial agent includes epoxy resin emulsion, a film-forming auxiliary agent, chitosan, a lotus leaf hydrophobic agent and antibacterial liquid; and the antibacterial liquid is prepared by mixing silver-loaded zeolite, eucalyptus oil and lemon oil according to a mass ratio being 1 : (0.5-0.9) : (0.6-1) to grind into particle sizes that are less than or equal to 1 [mu]m. The coating technology of the paint includes three steps which successively are surface pretreatment, primary spraying and secondary spraying. The paint has advantages of being good in barrier property and high in antibacterial property.

The invention provides a method for preparing a polyurethane adhesive used for building. The method comprises the following steps: 1) adding radix astragali powder in water, boiling the material, insulating the material, adding absolute ethyl alcohol, stirring the materials, cooling the materials, performing ultrasonic extraction to obtain a primary filtrate, adding filter residue in an ethanol solution, performing ultrasonic extraction to obtain a secondary filtrate, merging the filtrates, performing rotary evaporation concentration to obtain a radix astragali extract product; 2) performing ultrasonic dispersion on porous zinc phosphate and the radix astragali extract product, drying the material to obtain an antibacterial filling material; 3) preparing an antibacterial solution, adding a stearic acid solution, stirring the materials, performing pumping filtration, washing and drying the product to obtain the modified antibacterial filling material; 4) blending polyol, a chain extender, a stabilizing agent, an antifoaming agent and the modified antibacterial filling material under vacuum, adding a catalyst and stirring a mixture under vacuum to obtain a component A; 5) stirring diisocyanate and an activator under vacuum to obtain a component B; and 6) uniformly mixing the component A and the component B to obtain the polyurethane adhesive used for building. The prepared adhesive has good antibacterial property.

The invention discloses a sandwich treatment method of antibacterial non-natural leather. The sandwich treatment method comprises the following steps of (1) using a certain amount of an antibacterial agent as a first layer, spraying to the substrate surface of the non-natural leather, and drying the treated non-natural leather at the temperature of 50 to 60 DEG C; (2) mixing the antibacterial agent and resin according to a certain ratio, using a certain amount of a mixed solution as a second layer, spraying to the substrate surface of the non-natural leather obtained in step (1), and drying at the temperature of 50 to 60 DEG C; (3) using a certain amount of resin as a third layer, spraying to the substrate surface of the non-natural leather obtained in step (2), and drying at the temperature of 50 to 60 DEG C; then, ironing at the temperature of 100 DEG C and pressure of 70Kg, so as to obtain the antibacterial non-natural leather. The sandwich treatment method has the advantages that the finished product of non-natural leather can be treated, the suitability is wide, the practicality is strong, the operation is simple and convenient, and the prepared antibacterial non-natural leather has a good antibacterial property and an antibacterial lasting property.

The invention discloses a rare earth cerium doped copper-zinc composite oxide as well as a preparation method and application of the rare earth cerium doped copper-zinc composite oxide. The composite oxide is spherical Ce-CuO-ZnO particles, the particle size is 30-50nm, the crystal structure is wurtzite crystal form, and the energy gap is 2.68-3.05eV. The composite oxide comprises the following components according to mole percentage: 1.00-9.00% of CuO, 0.05-0.20% of Ce, and 90.80-98.95% of ZnO. According to the invention, the energy gap of ZnO is reduced, and the required excitation energy is lowered; and moreover, the copper-zinc composite oxide also has perfect heat resistance, the preparation technology is simple, the preparation cost is low, and the antibacterial rate still can exceed 92% after six times of repeated use while the antibacterial durability is good.

The invention discloses a waterproof finishing agent and a preparation method and application method thereof. the waterproof finishing agent is prepared from, by weight, 45-55 parts of an acrylate copolymer, 2.5-3.5 parts of an acrylamide/ ammonium acrylate copolymer, 1.8-2.2 parts of formaldehyde and 45-55 parts of water. The waterproof finishing agent can make the surface elasticity of a waterproof curtain for a bathroom good and soft, and has the advantages of being good in waterproof performance, low in breathability and moisture permeability, and excellent in antibacterial performance.

The invention discloses guanidine salt antibacterial paint. The guanidine salt antibacterial paint is characterized by being prepared from the following components in parts by weight: 45 to 65 parts of acrylic emulsion, 1 to 5 parts of maleic anhydride, 1 to 10 parts of ethylene glycol, 10 to 30 parts of filling material, 1 to 10 parts of dispersant, 1 to 5 parts of de-foaming agent, 1 to 5 parts of pigment and 1 to 8 parts of guanidine salt type polymer. A coating of the antibacterial paint has good sterilization property and lasting antibacterial property and has relatively good safety.

The invention discloses a PU antibacterial coating as well as a preparation method and application thereof. The PU antibacterial coating comprises a component A and a component B, the component A is prepared from the following raw materials: hydroxy acrylic resin, thermoplastic acrylic resin, saturated polyester resin, aluminum paste, an antibacterial agent, a diluent, a drier and a flatting agent; and the component B is prepared from the following raw materials: a hexamethylene diisocyanate tripolymer and a solvent I. According to the PU antibacterial coating, the solid content is 35% or above during construction, and VOC emission is reduced (the VOC emission value is smaller than or equal to 700 g/L); the metal texture of the aluminum-silver powder paint is improved; and meanwhile, the PU coating disclosed by the invention is good in antibacterial effect, good in antibacterial coating dispersity, high in antibacterial efficiency and good in antibacterial durability.

The invention belongs to the technical field of antibacterial polyolefin microfiltration membranes and in particular relates to a method for prolonging the antibacterial persistence of a polyolefin microfiltration membrane. A cast membrane solution comprises the following raw materials in parts by weight: 36-42 parts of polyolefin material, 6-10 parts of 4,4'-biphenol p-phthalonitrile resin, 16-20parts of bisphenol A type phthalonitrile resin containing ether nitrile chain segments, 4-8 parts of silicon carbide powder, 1-2 parts of tribasic lead sulfate and 4-6 parts of nitrated chitosan antibacterial agent. Due to the preparation of the nitrated chitosan antibacterial agent, composite particles with stronger antibacterial property are obtained, the composite particles are uniformly dispersed in a membrane layer so as to have better antibacterial permanence, the permeability is kept not to be reduced on the basis that the strength is improved and the thickness of a film is reduced, the composite particles still have better hydrophility after being sufficiently dried for 96 h in a 50-DEG C drying oven, and meanwhile, the antibacterial effect can reach 90-100% of that before dryingtreatment, and therefore, the antibacterial property is persistent.

The invention discloses a method for ventilation and antibiotic finishing of viscose non-woven cloth for medical treatment and public health. The method comprises the following steps: dipping a clothsample into a sodium hydroxide solution, adding chloroacetic acid for generating etherification reaction, neutralizing by virtue of an ethanol solution of acetic acid, washing with an ethanol-water mixed solution, and drying; adding a silver nitrate into a protecting agent, namely a beta-cyclodextrin solution in the same volume, dropwise adding a reducing agent, namely a sodium borohydride solution, and magnetically stirring for reaction, so as to obtain a beta-cyclodextrin-nano-silver water solution; adding a cross-linking agent, namely butane tetracarboxylic acid into the obtained beta-cyclodextrin-nano-silver water solution, and uniformly stirring and mixing, so as to obtain antibiotic finishing liquid; and carrying out carboxymethylation on viscose non-woven cloth, dipping the viscosenon-woven cloth into the antibiotic finishing liquid, carrying out pre-baking and baking, washing with hot water, washing with cold water, and finally, drying.

The invention provides an antibacterial medical hemostatic sponge. The antibacterial medical hemostatic sponge is prepared from a biological macromolecule, halloysite and an antibacterial agent, wherein the biological macromolecule is used as a porous sponge skeleton, and the halloysite is loaded with the antibacterial agent. The application also provides a preparation method of the antibacterialmedical hemostatic sponge. The long-acting antibacterial hemostatic material provided by the invention can realize efficient hemostasis, and has effective hemostasis effects for a liver hemorrhage model. The antibacterial hemostatic sponge provided by the invention has good long-term antibacterial properties. In addition, the preparation method is simple and easy to implement, has no pollution tothe environment, and easily realizes mass production.

The invention provides an antibacterial lining aluminum plate applied to household appliances. The antibacterial lining aluminum plate comprises an aluminum plate body and an antibacterial coating covering the surface of the aluminum plate body. The antibacterial coating is prepared from the following components in parts by weight: 45-65 parts of N-[4-(sulfonamide) phenyl] acrylamide/brominated 3-allyl benzothiazole/N-trihydroxymethyl methacrylamide/glycidyl methacrylate copolymer, 5-10 parts of 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 4-tetramethyl-1, 3-pentanediol monoisobutyrate, 5-10 parts of a silane coupling agent, 1-5 parts of a coupling agent, 1-5 parts of a coupling agent, 1-5 parts of a coupling agent, 1-5 parts of a coupling agent and 1-5 parts of a coupling agent. The coating is prepared from the following components in parts by weight: 4 to 6 parts of 1, 1, 1, 3, 3-hexafluoropropane, 0.8 to 1.2 parts of aluminum dihydroxyamino acetate, 10 to 15 parts of filler, 1 to 2 parts of dispersing agent, 0.5 to 1.5 parts of defoaming agent, 0.3 to 0.8 part of flatting agent and 40 to 50 parts of solvent. The invention further discloses a manufacturing method of the antibacterial lining aluminum plate applied to the household appliances. The antibacterial lining aluminum plate applied to the household appliances is remarkable in antibacterial effect, good in antibacterial durability and long in service life.

The invention discloses a polylactic acid material with anti-adhesion and sterilization functions, which is prepared by the following steps: 1) stirring and dissolving a biodegradable material polylactic acid in a good solvent, adding a poor solvent to realize phase separation, and fully stirring to obtain a coating solution; 2) uniformly coating a polylactic acid sheet with the solution obtained in the step 1), and drying; 3) stripping the top layer polylactic acid by using an adhesive tape to obtain a super-hydrophobic surface; and 4) dispersing chlorophyll in absolute ethyl alcohol, coating on the super-hydrophobic surface of polylactic acid, and drying. The surface of the material has the super-hydrophobic performance of resisting initial adhesion of bacteria, and the adhered bacteria can be killed through photodynamic force. A super-hydrophobic and photodynamic synergistic antibacterial mode is adopted, the dosage of a bactericide is small, the sterilization efficiency is high, the antibacterial long-term effect is good, the controllability is high, and bacteria cannot be induced to generate drug resistance. The polylactic acid material with anti-adhesion and sterilization functions prepared by the invention is non-toxic and harmless, has good biological and environmental compatibility, and can be used in the aspect of bacterial infection resistance of medical or packaging materials.

The invention discloses an antibacterial medical suture line and a preparation method thereof, belongs to the field of medical materials, and particularly relates to an antibacterial medical suture line and a preparation method thereof. The antibacterial medical suture line is obtained by conducting antibacterial finishing on composite fibers of a skin-core structure, wherein the composite fiber comprises hydroxypropyl cellulose, L-ascorbyl ester, a glutaraldehyde skin layer and a PPDO or PLA core layer, and the skin layer also contains PPDO or PLA. The prepared antibacterial medical suture line is good in antibacterial effect; the antibacterial durability is good, and the antibacterial durability effect reaches 5 d or above; the water immersion resistance is good, the reduction amplitudeof the antibacterial effect is small after water immersion is conducted for 24 h, and the antibacterial effect is at least improved by 25% or above.