80results about How to "Long antibacterial effect" patented technology

The invention relates to a method of improving the bacterinertness of a silk fibroin solution. Silk fibroin material has favorable prospects when applied in biomedicine aspect, and thus the search of a method of improving the bacterinertness of silk material is meaningful. The invention comprises a silk fibroin solution preparing working procedure which adopts silk fibroin to prepare the silk fibroin solution and is characterized by also comprising a nanometer noble metal feeding working procedure by selecting nanometer noble metal with the grain diameter between 5 nanometers to 100 nanometers. When a temperature is between 0 DEG C to 50 DEG C, the nanometer noble metal is fed to a stand-by silk fibroin solution and is stirred at a rotating speed of 100-400 round/min to obtain the silk fibroin solution comprising the nanometer noble metal; the concentration of the silk fibroin is 0.5-15w/v percent, and the concentration of the nanometer noble metal is 0.005-0.2w/v percent. The invention can favorably improve the antibiotic performance of the silk fibroin solution so that the silk fibroin can be more widely applied to biological material.

The invention relates to a simple pyridinedicarboxylic acid rare earth complex as well as a preparation method and application thereof. The simple pyridinedicarboxylic acid rare earth complex is characterized by having the following chemical general formula: MxREy(pydcH)a(pydc)b.n H2O and being used as a rare earth antibacterial agent. The invention has moderate process conditions, simple needed equipment and convenient operation; in addition, the obtained simple pyridinedicarboxylic acid rare earth complex has high antibiosis efficiency, broad antibiosis spectrum, long antibiosis aging, and the like, has better antibiosis effect on colibacillus, staphylococcus aureus, and the like and can be widely used for various antibacterial materials.

The invention discloses a processing method of an easy-to-degrade non-woven fabric with an antibacterial function, and relates to the technical field of non-woven fabric processing. The method includes the following operation steps of firstly, synthesizing carboxyl-terminated polylactic acid; secondly, conducting antibacterial modification on the carboxyl-terminated polylactic acid; thirdly, preparing materials; fourthly, processing a fiber net; fifthly, forming the non-woven fabric. The prepared non-woven fabric has remarkable antibacterial performance and meanwhile is stable in antibacterialperformance and long in antibacterial time; the prepared non-woven fabric is high in mechanical strength, high in breathability, free of toxin and harm to human bodies and particularly good in biodegradability, and therefore the pollution caused to the environment when the non-woven fabric is abandoned is reduced.

A nonwoven member that includes a plurality of piezoelectric fibers. The nonwoven member is formed into a cloth by intertwining the plurality of piezoelectric fibers. The nonwoven member inhibits the growth of bacteria due to an electric charge generated when an external force is applied to the piezoelectric fibers.

An antibacterial plastic bottle used as the package of food, medicine, cosmetics and detergent is prepared from high-density polyethene, low-density polyethene and antibacterial agent composed soluble phosphate glass as carrier and Ag ions as active component through preparing the raw material containing antibacterial agent for external layer, preparing the raw material (PE) for internal, respective heating, co-extruding out via dual-layer die while blowing to obtain dual-layer bottle blank, cooling and trimming.

The invention discloses a method for a jet-plating antimicrobial coating on a nano mirror surface, relating to a surface spraying technology and providing a method for a jet-plating antimicrobial coating on the nano mirror surface with long-term antimicrobial and bacteriostatic effect. The method comprises the following steps of: treating the surface of a substrate; spraying a primer coating; carrying out surface sensitization and activation treatment; spraying a nano mirror surface coating; and spraying an ultraviolet curing antimicrobial finish paint coating. The method comprises the following steps of: simple process flow, simpleness, convenience and safety for operation, usage automation, batch production and environment-friendliness; in addition, the jet-plating antimicrobial coating of the nano mirror surface has the advantages of high antimicrobial efficiency and long antimicrobial aging. An antimicrobial plastic sample is detected according to a JIS (Japanese Industrial Standard) Z2801:2000 standard, and the antimicrobial efficiency reaches 99.99 percent.

The invention relates to the technical field of shrink films, and concretely relates to an antibacterial PE shrink film. The antibacterial PE shrink film is prepared through processing, by weight, 400to 600 parts of LDPE, 150 to 300 parts of HDPE, 150 to 300 parts of mLLDPE, 80 to 150 parts of PE wax and 10 to 100 parts of a composite antibacterial agent, wherein the composite antibacterial agentis prepared through processing, by weight, 0.003 to 0.01 part of 1-bromo-3-chloro-5,5-dimethyl hydantoin, 10 to 100 parts of an inorganic antibacterial agent, 30 to 50 parts of a silane coupling agent and 40 to 60 parts of a cationic surfactant; and the inorganic antibacterial agent is a graphene oxide loaded silver ion antibacterial agent or one or more selected from nanometer silver nitrate, nanometer titanium dioxide and nanometer zinc oxide. The long-acting lasting antibacterial performance is realized, and the antibacterial effect is excellent. The invention further relates to a processing method of the antibacterial PE shrink film. The antibacterial PE shrink film with excellent antibacterial performance is obtained through processing.

The invention provides a composite antimicrobial of a nanometer silver bromide polymer and a preparation method thereof and belongs to a functional polymer material technology field. First, a quaternary ammonium salt type macromolecule polymer is prepared by free radical polymerization. Organic/inorganic composite materials required by preparation of silver bromide nanoparticles are intermingled with the macromolecule polymer of quaternary ammonium salt by in situ precipitation. The composite antimicrobial in the invention has the advantages of a quaternary ammonium salt type organic antimicrobial and an Ag-type inorganic antimicrobial combined: low toxicity, wide antimicrobial spectrum and strong antimicrobial activity. Furthermore, the prepared silver bromide nanoparticles are not easy to to agglomerate and leak and antimicrobial time is long because of a stabilization effect of the macromolecule copolymers and complex anions. The method reduces the amount of Ag and overcomes the defects that a single Ag-type antimicrobial is easy to change colors by intermingling a little Ag with organic polymer materials besides. The composite antimicrobial can be added in an undertint base to prepare antimicrobial functional materials.

The invention discloses an antibacterial scented non-woven tape and a preparation method thereof. The antibacterial scented non-woven tape includes a base material and an adhesive layer, the base material includes an upper layer of non-woven fabric, a lower layer of non-woven fabric and a middle layer of fabric cloth, the upper layer of The raw materials of the non-woven fabric and the lower layer non-woven fabric include: polyester fiber and viscose fiber according to the weight part, and the raw materials of the middle layer fabric cloth include: polyester, spandex, bamboo charcoal fiber according to the weight part; the middle layer fabric cloth is sprayed with additives, The raw materials of the additives according to parts by weight include: fragrance particles, aloe juice and rose flower extract. The invention has good air permeability, stretchability and bonding performance. The base material is provided with an intermediate layer of fabric cloth, which can effectively block external bacteria from invading the wound, reduce the probability of wound infection, and the tape has a long-lasting antibacterial effect, and The invention can release fragrance, add aloe vera juice and rose flower extract, can help wound recovery without leaving scars, and is convenient to use.

The invention discloses a processing method of anti-bacterial fabric. The processing method comprises the following technological steps of: 1) weaving by using warp silks and weft silks, wherein each warp silk adopts a low-twisted composite yarn which is twisted from 15-25 parts by weight of nanometer bamboo carbon fibers and 55-65 parts by weight of polyester fibers as a raw material; the warp density is 51.3-55.4 weft silks per each centimeter; each weft silk adopts a low-twisted composite yarn which is twisted from 25-35 parts by weight of nanometer silver fibers and 65-75 parts by weight of polyester fibers as a raw material; and the weft density is 22.7-25.4 weft silks per each centimeter; 2) turning over the fabric and sewing; 3) stacking cloth in amylase; 4) refining; 5) putting the cloth in catalase for oxygen bleaching; 6) dyeing the cloth; 7) performing color fixing; 8) dehydrating and scutching; 9) baking; and 10) shaping the finished product. According to the processing method of the anti-bacterial fabric, the fabric has good anti-bacterial health-care effects, good wash fastness and long anti-bacterial timeliness.

Methods for treating bacterial infections in the colon, and colonic disorders caused by bacterial infection, using a poorly absorbable form of Rifalazil, are described. Compositions for oral administration, and colonic delivery, of a non- micro-granulated Rifalazil formulation, are also described. Rifalazil is delivered in a form which is poorly absorbed in the gut after oral dosing, and the vast majority of the orally-dosed Rifalazil is not absorbed in the gut. Accordingly, the antibacterial potency in the colonic flora will be enhanced, while absorption and systemic circulation will be reduced, thus reducing potential adverse events.

The invention discloses a processing method of anti-bacterial fabric. The processing method comprises the following technological steps of: 1) weaving by using warp silks and weft silks, wherein each warp silk adopts a low-twisted composite yarn which is twisted from 20-30 parts by weight of nanometer bamboo carbon fibers and 60-75 parts by weight of polyester fibers as a raw material; the warp density is 52.2-56.1 weft silks per each centimeter; each weft silk adopts a low-twisted composite yarn which is twisted from 35-45 parts by weight of nanometer silver fibers and 75-85 parts by weight of polyester fibers as a raw material; and the weft density is 21.4-23.7 weft silks per each centimeter; 2) turning over the fabric and sewing; 3) stacking cloth in amylase; 4) refining; 5) putting the cloth in catalase for oxygen bleaching; 6) dyeing the cloth; 7) performing color fixing; 8) dehydrating and scutching; 9) baking; and 10) shaping the finished product. According to the processing method of the anti-bacterial fabric, the fabric has good anti-bacterial health-care effects, good wash fastness and long anti-bacterial timeliness.

The invention discloses herba dendrobii officinale healthcare soap. The herba dendrobii officinale healthcare soap is prepared from the following raw materials: blend oil, alcohol, glycerinum, EDTA, white sugar, water, herba dendrobii officinale, flos lonicerae, radix scutellariae, cortex cinnamomi, cortex moutan, folium artemisiae argyi, clove, radix angelicae, borneol, fructus gleditsiae, licorice root, antibacterial additive, polylactic acid, zeolite, zinc oxide, and silane coupling agent KH-560. The invention also provides a preparation method of the herba dendrobii officinale healthcare soap. The prepared soap is excellent in antibacterial performance.

The invention discloses a pollution-free agricultural soil disinfectant, and discloses a preparation method of the disinfectant. The preparation method comprises the following steps: dissolving carbendazim in water, adding cyclodextrin, bamboo powder, medical stone powder and borax, mixing, and stirring to obtain a premixed antibacterial agent; crushing crop straws, and carrying out flash explosion treatment to obtain plant powder; adding polyaspartic acid, sodium alginate and corn protein peptide into the plant powder, mixing and grinding to obtain pretreated plant powder; and adding the pretreated plant powder into the premixed antibacterial agent, adding hypochlorous acid and water, and uniformly stirring to obtain the p preparation method. By adopting the method to disinfect the soil,the control effect on plant diseases and insect pests is greatly improved, the soil properties are obviously improved, the capacity of crop roots for absorbing nutritional ingredients can be obviouslypromoted, and the utilization rate and the yield of the fertilizer are obviously improved.

The invention discloses a long-acting bio-antibacterial polylactic acid plastic and a preparation method thereof and relates to the fields of preparation of antibacterial plastic. The invention is tosolve the problem that when chitosan, as an additive, is applied to biodegradable polylactic acid plastic in the prior art, the antibacterial activity is inferior to that of artificial organic/inorganic antibacterial agents. The method includes: 1) preparing antibacterial fibers from chitosan; 2) performing a crosslinking reaction with the chitosan antibacterial fibers with glyoxal being a crosslinker; 3) directly performing mixing coextrusion on the chitosan antibacterial fiber powder and a polylactic acid material to obtain an antibacterial polylactic acid base material; 4) performing high-temperature low-speed blending on the modified chitosan antibacterial fiber material and the antibacterial polylactic acid base material to prepare the long-acting bio-antibacterial polylactic acid plastic.

The invention provides a ureter stent tube capable of degrading long-acting antibacterial and a preparation method thereof. The ureter stent tube body is a membrane structure and an antibacterial agent whose loading amount is 0.01-5wt% is uniformly distributed inside and on the surface of the stent tube body. The preparation method comprises the following steps of: preparing the degradable fiber into a tubular fabric with uniform wall thickness and regular texture, soaking the tubular fabric in an antibacterial agent dispersion liquid, under the wicking action and the capillary action of a fiber aggregate, filling pores in the fabric with the antibacterial agent dispersion liquid, taking out, drying and repeating for a plurality of times, and then fixing the tubular fabric on a core mold,hot-melting the fabric to form a film by means of heat treatment, and pulling out the core rod after cooling to obtain the degradable ureter stent tube loaded with the antibacterial agent. The invention has the advantages of simple preparation, controllable loading amount of the antibacterial agent, uniform distribution, effective embedding of the antibacterial agent and the bracket body, no burstrelease phenomenon after being implanted into the body, long-acting antibacterial effect and better biocompatibility.