21results about How to "Improve antibacterial function" patented technology

The invention discloses a preparation method of a flame-retardant viscose fiber with an antibacterial function, which comprises the following steps: (1) under sufficient stirring, sequentially adding a phosphorus flame retardant, a dispersant and graphene oxide into deionized water with an alkaline pH value, and stirring and ball-milling to obtain a flame retardant dispersion liquid; (2) preparing a spinning stock solution by taking cellulose pulp as a raw material, and adding the flame retardant dispersion liquid into the spinning stock solution by adopting a pre-spinning injection method to prepare a blended spinning stock solution; (3) spinning the blended spinning stock solution in a coagulating bath, and reducing the blended spinning stock solution in an oxidation-reduction bath to obtain a formed tow; and after drafting, carrying out a post-treatment process to obtain the flame-retardant viscose fiber with the antibacterial function. The production process is optimized from multiple aspects such as selection of raw materials for preparing the flame retardant, oxidation reduction and the like, and the prepared flame-retardant viscose fiber has excellent flame retardance, good physical and mechanical properties and antibacterial properties and good wearability.

The invention discloses a highly antibacterial fabric and a preparation process thereof, and relates to the technical field of antibacterial fabrics, the highly antibacterial fabric comprises a composite fabric layer, an antibacterial adhesion layer, a zinc coating, a cotton fabric base material and a nano-silver antibacterial layer; the composite fabric layer is prepared from a polycaprolactone spinning solution and a polylactic acid spinning solution through electrostatic spinning, the polycaprolactone spinning solution is prepared from a polycaprolactone solution and a composite heterojunction suspension through mixing, and a composite heterojunction in the composite heterojunction suspension is prepared from sodium molybdate dihydrate and zinc through a hydrothermal method; the antibacterial adhesion layer is prepared from menthol modified polyacrylate; the zinc coating is prepared from a zinc target material through magnetron sputtering; the nano-silver antibacterial layer is prepared from hinokitiol modified chitosan through in-situ reduction of silver nitrate.

The invention relates to the field of adhesives, and particularly discloses high-weather-resistance antibacterial environment-friendly water-based woodworking glue and a preparation method thereof. Comprising the following components in parts by weight: 50-70 parts of water-soluble antibacterial polyurethane modified acrylic resin; 0.3 to 0.6 part of a defoaming agent; 0.5 to 0.8 part of a dispersant; 0.2 to 0.5 part of a thickening agent; 5-8 parts of a cross-linking agent; 5-10 parts of a solvent; and 3-8 parts of microcapsules. The woodworking adhesive disclosed by the invention is environment-friendly, high in adhesive power, capable of realizing lasting antibacterial and weather-proof effects and suitable for bonding outdoor wood products.

The invention relates to a high-strength antibacterial spandex fabric and a preparation method thereof, and belongs to the technical field of functional textile materials. The spandex fiber comprises a spandex fiber matrix and a functional polymer layer grafted on the surface of the matrix through a covalent bond, and the functional polymer layer is a polymer of an unsaturated derivative of natural phenolic acid and is prepared by introducing carbon-carbon unsaturated bond groups such as acryloyloxy and the like into the natural phenolic acid through esterification or etherification. During preparation, the spandex fiber is subjected to plasma pretreatment, and then the spandex fiber and the natural phenolic acid-containing unsaturated derivative monomer are subjected to thermal initiation or photo-initiation graft polymerization to form the functional layer. The lasting and stable antibacterial function is achieved through covalent bond grafting, the natural phenolic acid derivative endows the fiber with the environment-friendly and non-dissolution type antibacterial property, the functional layer can improve the modulus and breaking strength of the fiber, the intrinsic elasticity of spandex is considered, the comfortable fitting characteristic of the composite fabric is reserved, and the composite fabric is endowed with the high strength and the antibacterial function.

The invention discloses an antibacterial agent, a preparation method thereof and a refrigerator, and belongs to the technical field of antibacterial materials. According to the technical scheme, the preparation method comprises the following steps: dispersing MoO3, 1, 3, 5-triformyl phloroglucinol and potassium hydroxide in deionized water, carrying out an oil bath reaction, adding an N, N-dimethylformamide solution containing p-phenylenediamine, continuing the reaction, washing, and drying to prepare the antibacterial agent MoO3 at TpPa-1 composite material. The preparation method is applied to the aspect of refrigerator antibacterial materials, the problems that when MoO3 is used as a photocatalytic material, the electron and hole separation efficiency is low, the stability in an aqueous solution is poor, and then the photoresponsiveness and the antibacterial durability of MoO3 are affected are solved, electron-hole pair separation of MoO3 can be effectively promoted, the aqueous solution stability of MoO3 is improved, and the preparation method is simple and easy to implement. The service life is prolonged.

This invention belongs to the field of functional textile materials and provides a cooling and antibacterial polyester fabric and its preparation method. The invention employs a melt-blended spinning design of a thermally conductive antibacterial core-shell masterbatch and a polyester matrix. The masterbatch uses a zinc oxide submicron rod-shaped inorganic core as its core, coated with a silane coupling layer and a quaternized copolyester shell. During fiber drafting, the one-dimensional zinc oxide rods are aligned axially, significantly improving the longitudinal thermal conductivity of the fiber and enhancing the instantaneous cooling sensation upon contact. Simultaneously, the quaternized copolyester shell exhibits good compatibility with the polyester matrix, constructing a dense, wash-resistant, and antibacterial network. This achieves synergistic optimization of high-strength, fine-denier spinnability with high-filler thermal conductivity, durable antibacterial properties after 50 machine washes with a soft and comfortable feel, and high functionalization efficiency with low migration safety. It resolves the technical contradictions in existing polyester fabrics regarding thermal conductivity and cooling sensation versus antibacterial durability, functionality versus safety, and processability versus comfort, and has broad application value in areas such as intimate apparel and bedding.

The invention belongs to the technical field of antibacterial materials, and discloses a micro-nano fiber material as well as a preparation method and application thereof. The preparation raw materials of the micro-nano fiber material comprise a degradable matrix and a composite antibacterial agent, the preparation raw materials of the composite antibacterial agent comprise polyvinyl alcohol and a high-molecular antibacterial agent, and the high-molecular antibacterial agent is a ternary copolymerized quaternary ammonium salt high-molecular antibacterial agent with the publication number of CN117304390A. The polyvinyl alcohol is introduced into the composite antibacterial agent, so that the compatibility of the composite antibacterial agent and a degradable matrix in the subsequent spinning forming processing and using process is further improved, the dispersion uniformity and long-term stability of a macromolecular antibacterial agent in the degradable matrix can be further improved, migration and enrichment are avoided, and toxic and side effects are avoided; and the micro-nano fiber material has a lasting antibacterial function, is biodegradable and has good air permeability.

The invention discloses a visual indication of the freshness of raw fish pieces and a non-contact fresh-keeping dual-function label and a preparation method thereof, and belongs to the technical field of food packaging and preservation. The label is prepared into a fiber film by electrostatic spinning technology using bromothymol blue-alizarin as a freshness indicator and a wall material raw material, and trans-2-hexenal as a core material raw material, and the fiber film is wrapped with a transparent and breathable packaging film on the outside of the fiber film. At the same time, the present invention also provides a preparation method of the dual-function label. The label of the present invention uses bromothymol blue and alizarin as freshness indicators, and can produce significant color changes after absorbing the gas generated by the corruption of fish meat, thereby intuitively, efficiently, sensitively and accurately reflecting the freshness of raw fish pieces. At the same time, trans-2-hexenal is embedded in the label by electrostatic spinning technology, which can continue to volatilize and inhibit the growth of corrupt microorganisms during the preservation of fish pieces, thereby extending the shelf life of raw fish pieces, and has great economic value.

The utility model relates to the technical field of shoes, and discloses an anti-splashing anti-scald antibacterial cushioning shoe which comprises a sole, a vamp is sewn on the upper surface of the sole, the vamp is designed in a sealed mode, and extending cloth is arranged at an opening of the upper surface of the vamp. The bandage is arranged on the surface of the extension cloth, the bandage is designed to be elastic, the extension cloth is designed to be rectangular, and the extension cloth is cylindrical after being rolled up; the antibacterial layer is arranged on the inner wall of the vamp, and the upper surface of the sole is an elastic layer. The vamp is designed in a sealed mode, water can be isolated and prevented from entering the shoe, the extension cloth is connected to the leg of a user in a sleeving mode, the ankle of the user can be covered, when boiled water is splashed on the vamp, the splashed boiled water can be blocked by the extension cloth, the boiled water can be effectively prevented from making contact with the ankle, and the phenomenon that the boiled water scalds the ankle is avoided; and the water-sprinkling and scald-preventing functions of the shoes are further improved.

The invention discloses a design and preparation method of a multi-layer polyurethane composite product, and belongs to the field of high polymer materials. Aiming at the problems that elasticity, strength and rapid prototyping are difficult to balance and interlayer bonding is weak in the traditional polyurethane gel, the preparation method disclosed by the invention is realized through full-chain innovation and comprises the following steps: firstly, synthesizing a polyhydric alcohol monomer with high primary hydroxyl group content; soft inner gel prepolymers A and B and hard outer gel prepolymers C and D are further prepared, a light curing mechanism is introduced into the prepolymer D, and chemical-light dual curing is achieved; a combined pouring process is adopted, specifically, a polyurethane outer film is subjected to vacuum adsorption shaping, an inner gel layer is poured for preliminary curing, then an outer gel layer is poured, rapid shaping is conducted through ultraviolet radiation, and finally overall stepped curing is conducted. The product has a three-layer structure, the layers are firmly combined through chemical bonding, the hardness is low, the rebound rate is high, the permanent deformation is small, the pressure dispersion efficiency is excellent, the forming period is short, and the product is suitable for the fields of high-end medical care, ergonomic support and the like.

The invention provides a preparation method of in-situ curing hydrogel, hydrogel and application thereof, and relates to the technical field of biomaterials.The preparation method comprises the steps that a first precursor solution and a second precursor solution are mixed, and the in-situ curing hydrogel is obtained; the first precursor solution contains chitosan or a derivative thereof and a medicine, and the concentration of the chitosan or the derivative thereof is 6-12% w / v; the second precursor solution contains DF-PEG and Cu < 2 + >, the concentration of the DF-PEG is 10-15% w / v, and the concentration of the Cu < 2 + > is 1.9-5.6 mmol / L. The in-situ curing hydrogel obtained by the preparation method is short in curing time, the gel strength after curing is high, medullary cavity hemostasis can be simply, conveniently and efficiently realized, and the in-situ curing hydrogel has important significance for solving the problem of lacuna bone bleeding.

The utility model discloses antibacterial cloth for children's toys, and relates to the technical field of toy cloth. Comprising a base cloth layer, an upper fragrant layer fixedly pasted on the upper surface of the base cloth layer, an upper reinforcing layer fixedly pasted on the upper surface of the upper fragrant layer, an antistatic layer fixedly pasted on the upper surface of the upper reinforcing layer, an upper antibacterial layer fixedly pasted on the upper surface of the antistatic layer, and a fluff layer fixedly pasted on the upper surface of the upper antibacterial layer. A lower fragrant layer is fixedly adhered to the lower surface of the base cloth layer, a lower reinforcing layer is fixedly adhered to the lower surface of the lower fragrant layer, a lower antibacterial layer is fixedly adhered to the lower surface of the lower reinforcing layer, and a wear-resistant layer is fixedly adhered to the lower surface of the lower antibacterial layer. The anti-bacterial function of the cloth is increased, the cloth is not prone to breeding bacteria, using is safer and more sanitary, fragrance of the cloth is increased, children are more favored by the cloth, meanwhile, the tensile property of the cloth is increased, the cloth is not prone to being damaged or deformed by pulling, the cloth is better attached to toys, and the service life is prolonged.

The invention discloses a preparation method and application of a nano-emulsion bacteriostatic agent with mango peel as a material, and belongs to the technical field of botanical pesticide preparations, the method comprises the following steps: drying and crushing the mango peel, and extracting with a first polar solvent to obtain a first crude extract; dissolving with a second polar solvent, adjusting the pH value to an isoelectric point, and carrying out ultrasonic-assisted extraction and standing layering to obtain an upper organic phase; removing a solvent to obtain a refined extract, and mixing the refined extract with an emulsifier and water to form a pre-emulsion; and carrying out high-speed shearing and high-pressure homogenization treatment to obtain the nano-emulsion bacteriostatic agent. The invention further provides application of the prepared nano emulsion bacteriostatic agent, the technical problems that an existing plant source bacteriostatic agent is low in active ingredient extraction efficiency, easy to degrade, poor in stability, not prone to uniform dispersion and the like are solved, efficient enrichment and stable encapsulation of the active ingredients are achieved through the integrated extraction, refining and nano emulsification technology, and the bacteriostatic agent has the advantages of being environmentally friendly, free of toxic and side effects and the like. Therefore, the antibacterial effect and the storage stability of the final product are remarkably improved.

The utility model relates to the technical field of sunscreen antibacterial coats, and discloses a sunscreen antibacterial coat and a sunscreen clothes group, the sunscreen clothes group comprises a sunscreen layer, an antibacterial layer is connected inside the sunscreen layer, a breathable layer is connected inside the antibacterial layer, a sunscreen mechanism is embedded outside the sunscreen clothes group, and the breathable layer is connected inside the breathable layer. The sunscreen mechanism comprises a telescopic air bag, the bottom of the telescopic air bag is communicated with an air pipe, the bottom of the air pipe is communicated with a round cover, and an interlayer is connected between the air pipe and the round cover. According to the sun-resistant and antibacterial coat, through the sun-resistant layer, the antibacterial layer and the breathable layer which are additionally arranged, the overall breathable, antibacterial and sun-resistant functions are added, the sun-resistant effect is improved through the inflatable sun-resistant mechanism, and meanwhile the problem that friction and collision are generated on the back of a user when the user exercises due to a traditional hat brim is solved; meanwhile, the trachea is automatically disinfected after being used, so that bacteria are prevented from being generated after the outside of the trachea is contaminated by saliva of the user.

The application provides a completely biodegradable resin and a preparation method and application thereof, and belongs to the technical field of biodegradable materials.The completely biodegradable resin comprises the following raw materials: carbon dioxide-based polycarbonate, a toughening agent, an anti-blocking agent and an auxiliary agent; the carbon dioxide-based polycarbonate comprises PPC-P, PPCX, PPC-Plus and other degradable polyester resin.The preparation method can significantly improve the elongation at break of the raw material, while ensuring that the material has good tensile strength.Compared with the PBAT polyester film, polyolefin film and other film materials currently circulating in the market, the degradable resin film prepared by the application has better barrier performance and antibacterial performance to carbon dioxide and other gases, and is expected to replace traditional materials and be applied in the field of plastic film.

The application discloses a fruit active fresh-keeping material and a preparation method and application thereof. Modified amphiphilic nano carbon particles are selected as a self-assembly coating, and an amphiphilic multi-walled carbon nanotube coating with high bacteriostatic effect is loaded on a self-developed substrate by using a self-assembly coating technology, so that a multilayer molecular film is formed on the surface of the substrate, metabolic gas and moisture permeability are effectively adjusted, the high oxygen resistance, low moisture permeability and excellent bacteriostatic function of the fruit active fresh-keeping material are realized. The fruit active fresh-keeping material prepared by the application contains a plurality of substances with natural bacteriostatic function in raw materials, adopts a substrate and a multilayer molecular film structure, guarantees mechanical properties, has high oxygen resistance, low moisture permeability and high bacteriostatic performance, better blocks microorganisms and environmental pollution, can adjust a fruit storage sealed micro-gas environment, reduces a physiological metabolic rate of the fruit, realizes the functions of prolonging fruit storage time and shelf life, and improves quality safety of the fruit.

The utility model provides a hand-held garbage bag with an antibacterial function, which comprises a bag body, an antibacterial layer is arranged on the inner side surface of the bag body, the bag body is folded for use, a feed port and a discharge port are respectively arranged at two ends of the bag body, a rope sleeve is glued at the top of the feed port in a hot-pressing manner, a first handle is integrally arranged in the middle of two sides of the rope sleeve, and a second handle is arranged at the bottom of the bag body. The bag body is divided into the upper half portion and the lower half portion to be folded for use, the feeding port and the discharging port in the bag body are provided with the first handle and the second handle respectively, the upper half portion of the bag body is used for containing garbage, the bag head is arranged on one side of the discharging port in a hot-press gluing mode, the bag head is higher than the other side of the discharging port, and the second handle is integrally arranged in the middle of the bag head. In the garbage dumping process, garbage dumping does not need to be carried out after a tightened and sealed feeding opening is opened, the second lifting handle is directly loosened, the automatic discharging and dumping effect is achieved according to the dead weight of garbage, sterile contact is effectively achieved, and garbage dumping is convenient.

The invention provides an antibacterial surface segregation covalent organic framework as well as a preparation method and application thereof, and relates to the field of separation membrane materials. The organic framework material disclosed by the invention is prepared by taking a covalent organic framework nanosheet with an internal antibacterial function as a segregation agent, physically blending the covalent organic framework nanosheet with a polymer matrix and utilizing a non-solvent induced phase separation process. The method comprises the following steps: firstly, synthesizing a covalent organic framework nanosheet dispersion liquid through a single-phase method, then blending the covalent organic framework nanosheet dispersion liquid with a high polymer material to prepare a membrane casting liquid, and finally, constructing a compact functional skin layer on the surface of the membrane and in pore channels through a non-solvent phase inversion process by utilizing the spontaneous surface segregation effect of covalent organic framework nanosheets in a phase separation process. The prepared membrane is of a typical asymmetric structure, and the antibacterial rate of the membrane on escherichia coli is high; the developed finger-shaped pore structure endows the membrane with high flux characteristic. The method effectively solves the problem of membrane biological pollution in the field of water treatment, and has the synergistic advantages of high flux, high interception and efficient antibiosis.

The invention discloses a high-breathability antibacterial non-woven fabric and a preparation process thereof, and relates to the related field of non-woven fabrics. Through the design of the three-layer composite structure, the high air permeability of the microporous PLA fibers, the antibacterial function of the melt-blown PP fibers and the comfort of the antistatic PP fibers are combined, meanwhile, the rhombic grid-shaped reinforced structure is introduced into the middle layer, and the fibers adopted by the rhombic grid-shaped reinforced structure are composite fibers of the PLA fibers and the UHMWPE fibers; the tensile strength and durability are greatly improved, the overall structure is light, convenient and environmentally friendly, excellent air permeability, antibacterial property and mechanical property are achieved, and the dual requirements for high performance and sustainable development are met.

The invention belongs to the technical field of biological medicines, and particularly relates to application of a non-receptor protein tyrosine kinase agonist in resisting mycobacterium tuberculosis infection. Tyrosine phosphorylated protein is screened out through a bioinformatics technology to serve as a research target, cell and animal experiments are carried out, and it is found that the target agonist improves host immunity and inhibits growth and propagation of mycobacterium tuberculosis by activating immune cells and enhancing the antibacterial function of macrophages. Compared with the traditional antibiotic treatment depending on multi-drug combination, the agonist provided by the invention reduces the dependence on antibiotics through precise targeting immunoregulation, thereby reducing the generation risk of drug-resistant strains.

The invention discloses efficient moisture-proof antibacterial leather and a preparation process, the process comprises the steps of soaking, degreasing, tanning, fat liquoring, drying and the like, a sodium cocoyl glycinate aqueous solution, acetone and an enzyme preparation are added in the degreasing process, a tanning agent and an antibacterial agent are added in the tanning process, the tanning agent is tanning extract, and the antibacterial agent is an antibacterial agent. The antibacterial agent is a mixed solution of modified chitosan, glycyrrhizic acid and a nano-silver solution. Compared with the prior art, the process disclosed by the invention adopts a dual degreasing process, the sodium cocoyl glycinate aqueous solution is added, so that the sodium cocoyl glycinate aqueous solution, acetone and an enzyme preparation perform efficient degreasing treatment on the leather, and meanwhile, the growth of bacteria and fungi in the leather can be effectively inhibited under the action of the composite antibacterial agent; the antibacterial function of the leather is improved.