14results about How to "Good antibacterial function" patented technology

The invention provides a polyvinylidene fluoride-based nanofiber yarn wave-absorbing fabric as well as a preparation method and application thereof, and belongs to the technical field of preparation of wave-absorbing composite materials. The preparation method comprises the following steps: preparing nanofiber yarns or nanofiber core-spun yarns by adopting a conjugate electrostatic spinning technology, directly adding a conductive substance into a spinning solution to form conductive nanofibers, and further coating the nanofiber yarns or the nanofiber core-spun yarns with a PDA shell layer to improve the wear resistance and reduce silver nanoparticles in situ; finally, the yarns are woven into fabric through a weaving or knitting technology, and the fabric is applied to the fields of buildings, electromagnetic protective clothing, flexible electronics and the like. Compared with an existing microwave absorbing material, the fabric-based material is light in weight and good in mechanical flexibility and processability. Fabrics formed of nanofiber yarns or nanofiber core spun yarns facilitate the induction of interfacial polarization and multiple reflections, and can deeply design material properties. The material provided by the invention has better wear resistance, wearability and microwave absorption performance, and is suitable for actual production and application.

The invention belongs to the field of microorganisms, and particularly relates to a feed containing bacillus paralicheniformis carrying quorum sensing related genes and a preparation method of the feed. The bacillus parlicheniformis is bacillus parlicheniformis Shannan.BP-803, and the bacillus parlicheniformis is bacillus parlicheniformis Shannan.BP-803. The invention also discloses a preparation method of the bacillus parlicheniformis. The viable count of the bacillus paralicheniformis contained in each kg of the feed is 2.1 * 10 < 9 >-7.3 * 10 < 9 > CFU. The bacillus paralicheniformis Shann.BP-803 strain used in the feed disclosed by the invention has the capability of efficiently inhibiting pathogenic bacteria and pathogenic fungi and the capability of degrading mycotoxin, so that after the feed containing the bacillus paralicheniformis Shann.BP-803 strain is eaten, the diarrhea rate of animals is reduced, and the feeding effect is better.

The invention provides a preparation method of antibacterial degradable fibers. The preparation method comprises the following steps: adding chitosan and citric acid into a polyethylene glycol solution, and uniformly stirring to obtain an antibacterial polyvinyl alcohol solution; the preparation method comprises the following steps: mixing polylactic acid, chitosan, super-antibacterial polyvinyl alcohol 1, a compatilizer polyvinyl alcohol grafted modified poly-L-lactic acid and polycaprolactone, an antioxidant and a lubricant in a high-speed mixer to obtain a material 1; adding the material 1 into a parallel double-screw extruder from a main feeding hole, and granulating to obtain a granular material 2; performing vacuum drying on the material 2 to obtain a material 3; and putting the material 3 into a screw type spinning machine for melt spinning to obtain the antibacterial degradable fiber. The antibacterial functional components chitosan and polyvinyl alcohol are well combined with a water-soluble degradable fiber base material, so that good functionality, spinnability and mechanical strength are achieved at the same time. The prepared material has the characteristics of high antibacterial property, wide antibacterial spectrum, low cost, environment friendliness and the like, and has a good market application prospect.

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 relates to the technical field of medical equipment, and discloses a nanofiber hemostatic bandage and application thereof.The nanofiber hemostatic bandage comprises the following structural layers from outside to inside in sequence: a protection sheet used for covering the surface of the hemostatic bandage before use and protecting the hemostatic bandage from pollution; the nanofiber material layer is used as a substrate layer of the hemostatic bandage; the biochemical hemostasis area is arranged in the middle of the surface of the nanofiber material layer and used for releasing blood coagulation factors after encountering blood and accelerating blood coagulation; the adhesive layer is positioned on the periphery of the nanofiber material layer. By means of the multi-layer structural design, the comprehensive effect of physical hemostasis, chemical hemostasis and expansion hemostasis is achieved, 20 nm nano zinc oxide is embedded into the nanofiber material layer, and the antibacterial property and the ventilation and waterproof performance are achieved; the biochemical hemostasis area is controllably released through microencapsulated blood coagulation factors; the blood stopping response layer utilizes the synergistic effect of an expansive polymer material and microcapsules to form barrier protection and efficient hemostasis effects, and is particularly suitable for emergency scenes such as arterial bleeding and the like.

The invention relates to a preparation method of an antibacterial, fresh-keeping and oil-proof starch film based on a nanocellulose immobilized enzyme, belongs to the technical field of food, and discloses a method for regulating and controlling the performance of the starch film and endowing the starch film with antibacterial and fresh-keeping characteristics through the synergistic effect of the nanocellulose fibril immobilized enzyme and tannic acid. The core of the preparation method is that the enhancement effect of the nanocellulose fibrils, the precise catalytic action of the enzyme and the natural antibacterial property of the tannic acid are creatively combined and jointly act on the starch matrix, and the starch-based film which is high in amylose content, excellent in mechanical property and antibacterial and fresh-keeping functions is prepared. The starch film disclosed by the invention is good in performance, good in oil-proof performance, strong in corrosion resistance and good in antibacterial and fresh-keeping performance, and an innovative method is endowed with remarkable antibacterial and fresh-keeping characteristics, so that the urgent requirements of the modern food packaging industry on safety, health and efficient fresh keeping are met.

This utility model discloses an antibacterial, breathable, and slow-release memory foam pillow, relating to the field of memory foam pillow technology. It includes a memory foam pillow core, a pillowcase, ventilation holes, and a support component. The ventilation holes connect to the backrest end of the memory foam pillow core. The support component includes a breathable sheath and an internal filling layer. The filling layer has flow gaps and its surface is antibacterial. The breathable sheath is fitted inside the ventilation holes. Both the breathable sheath and the filling layer are soft. The advantages of this utility model are: by placing the filling layer inside the breathable sheath to inflate it, and then pressing the inflated breathable sheath into the ventilation holes, the support for the ventilation holes is improved, reducing the impact on comfort. Furthermore, the flow gaps in the filling layer and the breathable sheath ensure breathability and heat dissipation, and the antibacterial effect of the filling layer surface conveniently provides this antibacterial function to the ventilation holes.

The invention discloses a quaternary ammonium salt modified nano antibacterial waterborne epoxy wood and bamboo modifier and a preparation method thereof. An epoxy prepolymer, an active quaternary ammonium salt compound, an amine curing agent, an organic solvent and water are used as main raw materials, and are mixed according to the weight ratio of 100: 38.7: 44: 30.6: 137.4-641.4 to react to prepare the epoxy curing agent. The preparation method comprises the following steps: mixing an active quaternary ammonium salt compound and an amine curing agent in an organic solvent, reacting to obtain a quaternary ammonium salt modified amine compound, adding an epoxy prepolymer, continuously reacting to synthesize quaternary ammonium salt modified epoxy resin, and adding water to dilute to the required solid content, thereby obtaining the quaternary ammonium salt modified epoxy resin. The waterborne epoxy system with small size, high stability and high reaction activity is prepared. According to the invention, the wood and bamboo can be easily treated by adopting various modes such as spraying, brushing, soaking, vacuum or pressurized dipping and the like, the permeability is good, the wood and bamboo can be firmly fixed in the wood and bamboo after curing reaction, the dimensional stability of the wood and bamboo is improved, and meanwhile, the wood and bamboo anti-mildew agent has better antibacterial and anti-mildew functions.

The invention discloses rosin-based water-based antibacterial ink and a preparation process thereof, and belongs to the technical field of ink. The rosin-based water-based antibacterial ink is prepared from the following components in percentage by weight: 15 to 20 percent of water-based heat-resistant resin, 25 to 30 percent of composite pigment, 2 to 3 percent of green antibacterial agent, 6 to 8 percent of additive and 40 to 50 percent of deionized water, the water-based heat-resistant resin is obtained by polymerizing rosin modified resin, an emulsifier and acrylate, the composite pigment is a polyester carbon black composite material, and the auxiliaries comprise a dispersing agent, a thickening agent, a defoaming agent and a preservative. According to the technical scheme, the environment-friendly development requirement is met, meanwhile, the rosin-based water-based antibacterial ink further has good adhesion performance and antibacterial performance, the antibacterial effect is good, the antibacterial duration time is long, and the rosin-based water-based antibacterial ink can be widely applied to the field of various printed products such as tissue packaging.

The invention discloses a seven-area warp-knitted spacer fabric containing functional fibers and a preparation method of the seven-area warp-knitted spacer fabric, and relates to the technical field of spacer fabric preparation. The seven-area warp-knitted spacer fabric is sequentially provided with seven functional areas in the length direction of the fabric and comprises a front face yarn layer composed of blended yarn of modified wormwood fiber and polyester fiber, a back face yarn layer composed of blended yarn of bamboo charcoal fiber and polyester fiber and a middle spacer layer composed of polyester low stretch yarn connecting the front face yarn layer and the back face yarn layer. Wherein the modified wormwood fiber is obtained by performing composite modification on wormwood fiber through plasma and biological enzyme; in the middle spacing layer of every two adjacent functional areas, the linear density and / or the coil density of the polyester low stretch yarn are / is different. The antibacterial and adsorption dual-function lasting cooperation is achieved, seven-area supporting is precisely matched, the boundary is clear, transition is natural, and the production efficiency and the product quality stability are greatly improved.

The utility model discloses a shock-absorbing anti-skidding sole, which relates to the technical field of soles and comprises a sole body, a shock pad is fixedly arranged on the inner wall of a first mounting groove, and each first vent hole and each second vent hole are communicated with a ventilation cavity. And a plurality of transverse antibacterial strips and a plurality of longitudinal antibacterial strips are fixedly arranged on the inner wall of the first mounting groove. Through the ventilation cavities, the transverse antibacterial strips, the longitudinal antibacterial strips, the shock pads and the anti-slip strips, the shock absorption capacity and the anti-slip capacity of the shoe sole body can be improved, the multiple first ventilation holes and the multiple second ventilation holes can improve the ventilation and drying effect of the shock pads, and then the water loss speed in the shock pads can be increased; the multiple transverse antibacterial strips and the multiple longitudinal antibacterial strips can improve the antibacterial effect of the shock pad, so that the water resistance and antibacterial capacity of the shock pad are improved, the service life of the shock pad is prolonged, and it is guaranteed that the shock pad can conduct stable shock absorption on the sole body.

The utility model relates to a medical detection electrode, which comprises a backing, a first electrode, a second electrode, a first electrode, a second electrode and a second electrode, and is characterized in that the backing is provided with a first side and a second side opposite to the first side; a conductive adhesive disposed on a first side of the backing and formed with a hollow portion; the antibacterial pressure-sensitive adhesive is arranged on the first side of the backing, and the antibacterial pressure-sensitive adhesive extends beyond the periphery of the conductive adhesive and can fill the hollow part in the conductive adhesive; and a conductive member extending from the second side of the backing and electrically connected with the conductive paste. The utility model provides a medical detection electrode with an antibacterial function, which can prevent bacteria or other pathogens from contacting a patient through the medical detection electrode while ensuring that enough electric detection signals are provided, so that the risk that the patient is infected is effectively reduced.

This invention relates to a manufacturing process for antibacterial chitosan nano-silver fiber fabric. The fabric preparation process includes: modifying chitosan with quaternary ammonium salts, then preparing chitosan-modified soybean protein fibers via impregnation; chemically plating silver onto the surface of the chitosan-modified fibers using a silver mirror reaction; and finally preparing the nano-silver fiber fabric: fiber pretreatment → cotton mixing → opening and cleaning → carding → drawing → roving → spinning → winding → warping → sizing → heddle threading → weaving. The product of this invention has environmentally friendly, antibacterial, deodorizing, and health-promoting effects.