31results about How to "Exert antibacterial effect" patented technology

The invention discloses a high-nitrogen nickel-free antibacterial stainless steel watch case and a manufacturing method thereof. According to the high-nitrogen nickel-free antibacterial stainless steel watch case disclosed by the invention, Ag is combined with high nitrogen, so the antibacterial effect of Ag can be played, and the hardness and wear resistance of the watch case can be improved as well, therefore the high-nitrogen nickel-free antibacterial stainless steel watch case has a huge market value. According to the watch case disclosed by the invention, nickel element in the watch case is removed, the requirements of European Union ROSH environmental protection certification are fully carried out, so harms caused by nickel allergy are reduced to zero; moreover, the safety of the watch case is improved, and a quite good foundation is laid for China-made watch cases to break into and occupy international markets. Besides, according to the high-nitrogen nickel-free antibacterial stainless steel watch case disclosed by the invention, the mechanical properties of stainless steel are improved, good toughness and plasticity of the stainless steel are maintained; the strength of the stainless steel can be further improved; the yield strength can be higher than 2Gpa; the wear resistance of the stainless steel watch case is improved as well.

A process for preparing titanium oxide includes such steps as converting the Ti-contained aqueous solution to titanium hydroxide, adding hydrogen peroxide and generating thermal reaction to obtain the solution of anatase-type titanium oxide solution with complex group, and drying. It can be used to prepare coating solution, while has high adhesion and no corrosion to substrate.

The invention provides a sanitary towel with essential oil blasting beads, and belongs to the technical field of sanitary products. A sanitary towel body of the sanitary towel with the essential oil blasting beads comprises a pure cotton surface layer 1, a first dust-free paper layer 2, a water absorbing layer 3, a second dust-free paper layer 4 and a leakage-proof breathable bottom layer 6; an essential oil blasting bead bag 5 is arranged between the second dust-free paper layer 4 and the leakage-proof breathable bottom layer 6; the essential oil blasting bead bag 5 comprises a first essential oil blasting bead bag body 5-1 and a second essential oil blasting bead bag body 5-2; the first essential oil blasting bead bag body 5-1 is arranged in the middle of the sanitary towel body; antibacterial essential oil is wrapped in the first essential oil blasting bead bag body 5-1; the second essential oil blasting bead bag body 5-2 is arranged in the middle of the tail wing of the sanitary towel body. In the using process of the sanitary towel with the essential oil blasting beads, the first essential oil blasting bead bag body corresponds to a vaginal orifice, and the antibacterial effect of the antibacterial essential oil in the first essential oil blasting bead bag body can be brought into play to the maximum extent; and the second essential oil blasting bead bag body corresponds to the hip, the skin of the hip can be cared, and bacterium breeding is inhibited.

The invention relates to a macroscopic quantity preparation method for a macromolecule-based silver-loaded composite nanofiber membrane. The method comprises the steps of a spinning solution preparation step, an electrostatic spinning step and precursor reduction. According to the prepared macromolecule-based silver-loaded composite nanofiber membrane, the sizes of silver nanoparticles are stable, obvious agglomeration does not exist, and the distribution is even; the macromolecule-based silver-loaded composite nanofiber membrane has the advantages that the fiber length-diameter ratio is big, and the specific surface area is higher; therefore, the contact ratio of nano-silver and noxious bacteria in fiber is greatly increased, and the antibacterial effect of the nano-silver can be exerted to the maximum extent.

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 provides a medicinal composition for treating vagina inflammatory diseases in a gestation period, and the method comprises the following components in parts by weight: 10 to 200 parts of clove, 10 to 200 parts of fructus psoraleae, 10 to 200 parts of peony root bark, and 10 to 200 parts of honeysuckle. The extraction method of active components comprises the following steps: distilling steam of the clove and the peony root bark to extract a mixture of clove oil and paeonol; 2) combining the clove and peony root bark dreg and rest drugs, heating and extracting by using an alcohol extraction method, concentrating the extract, and drying to prepare powder a; and 3) spraying the mixture of clove oil and paeonol into the powder a to prepare powder b. The powder b and proper excipient are combined to prepare suppository, lotion and oral preparations. The medicinal composition is suitable for a whole body and local part combined administration to treat vagina inflammatory diseases in a gestation period, is exact in curative effect and high in safety, has certain tonifying effect on pregnant women, and has the advantages of less adverse response and high patient compliance.

The invention discloses a composite hydrogel material loaded with rosmarinic acid and a preparation method and application of the composite hydrogel material. The composite hydrogel material is prepared from liposome in which the rosmarinic acid is embedded and a temperature-sensitive type hydrogel, wherein the rosmarinic acid accounts for 0.1%-5% of the total mass of the liposome. The mixing mass/volume ratio of the rosmarinic acid-embedded liposome to the temperature-sensitive type hydrogel is 0.1 mg/ml-150 mg/ml. The rosmarinic acid-embedded liposome is prepared from lecithin and cholesterol, and the mass ratio of the lecithin to the cholesterol is (4 to 1) to (8 to 1). The liposome nanotechnology is adopted to embed the rosmarinic acid, the local concentration maintaining and deliveryof the rosmarinic acid can be more effectively realized, and a low-dose and high-efficiency therapeutic effect is achieved. Compared with pure rosemary acid, the antibacterial rate of the rosmarinic acid after being embedded in the liposome against staphylococcus aureus is significantly increased. The prepared composite hydrogel material is expected to be developed into a novel external-use material with a remarkable curative effect on acne, and good clinical application prospects are achieved.

The invention discloses a non-post-processing bacteriostatic blend. The blend is formed by three groups of fibers. The first group of fibers is fibers having an antibacterial property without bacteriostatic processing. The second group of fibers is fibers with softness and high moisture regain, and rigidity resistance is lower than 80cN and convention moisture regain is greater than 8%. The thirdgroup of fibers is chlorofibre fibers and/or modacrylic fibers with chloride, wherein cross-sectional flatness is greater than 1.08 and the convention moisture regain is less than 2.5%. The three groups of fibers comprise, by weight, 3% to 26% of the first group of fibers, 18% to 48% of the second group of fibers and 26% to 79% of the third group of fibers. In the invention, the fibers with the high moisture regain are adopted to absorb moisture as quickly as possible and transmit the moisture to the reverse side of the blend; the hydrophobic fiber with a special mechanism can transmit the water to the longitudinal direction of the fiber, the evaporation area of moisture is expanded, and the blend is dried as soon as possible to form the microscopic environment of moisture absorption and sweat releasing or moisture absorption and warm keeping; and a moist micro-environment required for bacterial reproduction is reduced so that a bacteriostatic fiber can achieve a bacteriostatic effect.

The invention discloses an antibacterial halogen-free flame-retardant PC/ABS composite material with high ball pressure temperature. The composite material mainly comprises the following components in parts by mass: 59-88 parts of PC, 520 parts of ABS, 4-12 parts of an organophosphorus flame retardant, 2-5 parts of a flexibilizer, 0.4-1 part of an antibacterial agent, 0.2-0.5 part of an anti-dripping agent, 0.2-1 part of a dispersing agent and 0.2-1 part of an antioxidant. The halogen-free flame-retardant PC/ABS composite material is good in antibacterial property, high in ball pressure resistant temperature, good in flame retardant property and white in color, various bright-colored products can be manufactured by adding the coloring agent, no halogen flame retardant is adopted, the flame retardant grade of the material is high, cost is low, smell is small, and large-area application and popularization are facilitated. The invention also discloses a preparation method of the composite material. The preparation method is simple to operate, low in cost, short in preparation period and convenient for large-scale production.

The invention relates to the field of food preservation, and particularly discloses a preparation method of frozen fresh walnuts. The preparation method comprises the following steps of S1, selectingwalnuts: picking green walnuts of 90% of maturity, and removing immature walnuts and bad walnuts to obtain green walnuts to be treated; S2, removing green seedcases, namely removing green seedcases from the to-be-treated green walnuts obtained in the step S1, and cleaning until no green seedcases remain on the surfaces, so as to obtain green seedcase-removed fresh walnuts; S3, performing fresh-keeping liquid treatment; S3, soaking the green seedcase-removed fresh walnuts obtained in the step S2 in a fresh-keeping liquid for 3-5 minutes; S4, freezing: storing the fresh walnuts without the greenseedcases under the condition that the temperature is (-12) to (-3) DEG C to obtain frozen fresh walnuts without the green seedcases, wherein the fresh-keeping liquid is prepared from the following components in parts by weight of 0.15-0.25 part of chitosan, 0.4-0.6 part of natamycin, 1.2-1.5 parts of calcium propionate and 16-20 parts of water. The frozen fresh walnuts prepared by the preparation method disclosed by the invention have a relatively long fresh-keeping period.

The invention relates to the field of antibacterial fabric materials, and discloses a preparation method of a composite antibacterial agent and application of the composite antibacterial agent to a polyester fabric. The preparation method of the composite antibacterial agent comprises the following steps that (1) amino modified nano zinc oxide is mixed with a halogen compound for a reaction to obtain halogen modified amino nano zinc oxide; and (2) the halogen modified amino nano zinc oxide and the antibacterial agent are mixed in an organic solvent, a catalyst is added, and a polymerization reaction is carried out under the action of the catalyst to obtain a nano zinc oxide halamine composite antibacterial agent. The antibacterial fabric prepared from the antibacterial agent has efficient antibacterial and deodorizing capacity.

The invention discloses a compound oral care solution. The compound oral care solution is prepared from the following raw materials in parts by weight: 0.15 to 0.3 part of blumea balsamifera oil, 0.2 to 0.3 part of callicarpa nudiflora extract, 0.05 to 0.1 part of alpinia oxyphylla oil, 10 to 15 parts of glycerol, 3 to 6 parts of ethanol, 2 to 5 parts of sorbitol, 1 to 2 parts of tween-20, 0.01 to 0.02 part of citric acid, 0.2 to 0.35 part of saccharin sodium salt, 0.25 to 0.35 part of peppermint oil, 0.1 to 0.3 part of essence and 20 to 50 parts of water. The invention further discloses a preparation method of the compound oral care solution. According to the compound oral care solution and the preparation method thereof, the compound oral care solution is highly sensitive to staphylococcus aureus, candida albicans and streptococcus mutans, is sensitive to escherichia coli and porphyromonas gingivalis, and can well prevent colonization of oral pathogenic bacteria on a dental acquired membrane, thereby avoiding formation of dental plaque and dental calculus.

The invention discloses a phthalocyanine-carboxymethyl chitosan conjugate, a preparation method and application thereof, and belongs to the field of medicine preparation. The phthalocyanine-carboxymethyl chitosan conjugate is a conjugate of monosubstituted amino-type zinc phthalocyanine and carboxymethyl chitosan, which has a dual functional group of phthalocyanine and carboxymethyl chitosan, It can be used for photodynamic antibacterial, photodynamic anticancer, photodynamic diagnosis and photodynamic disinfection; at the same time, carboxymethyl chitosan has excellent water solubility and biocompatibility, and can effectively improve the amphiphilicity and biophase of phthalocyanine. Capacitance, and reduce the toxicity of phthalocyanine, improve the clinical application value of phthalocyanine.

The invention discloses a chitosan/polycaprolactone composite nanofiber membrane material. The chitosan/polycaprolactone composite nanofiber membrane material is prepared by the following steps that a6-15wt% polycaprolactone solution is prepared, and 1-4wt% mupirocin is added; a 5-12wt% chitosan solution is prepared, and 0.5-8wt% lidocaine hydrochloride is added; the solutions are put into a feeding device of electrospinning equipment, the feeding rate is 8-50[mu]L/min, the receiving distance is 10-20cm, and the rotating speed of a receiver is 100-250 rpm/min; a high-voltage power supply is turned on, a voltage of 15-25 kV is applied, and the solutions are sprayed onto the fiber receiver for forming; and drying is carried out to remove the solvent, so that a composite nanofiber membrane is obtained. The composite nanofiber membrane exhibits excellent hydrophilicity, swelling rate, absorption capacity, thermal stability, mechanical properties and effective blood clotting ability, and further exhibits excellent cell compatibility and antibacterial activity; different release curves of different functional drugs can be realized; and the wound healing process can be significantly enhanced, and a synergistic effect of wound healing is achieved.