368 results about "Antibacterial coating" patented technology

The invention relates to the technical field of food packaging materials, in particular to a cerium dioxide nano-enzyme modified antibacterial coating and application of the cerium dioxide nano-enzyme modified antibacterial coating in food packaging. The biomimetic mineralization layer comprises the following components in percentage by weight: 35-45% of a green base material, 8-12% of dopamine modified yttrium-doped cerium dioxide nano-enzyme, 4-6% of a composite antibacterial agent, 3-4% of a natural cross-linking agent, 2-3% of a degradable plasticizer, 1-2% of a biomimetic mineralization layer precursor and the balance of deionized water, the green base material is a blend of a chitosan-polyethylene glycol graft and polylactic acid; the doping amount of Y3 in the nano enzyme is 3-4at%. The antibacterial agent is excellent and lasting in antibacterial effect, has no migration risk of the antibacterial agent, and can guarantee food safety; a green base material and a degradable plasticizer are adopted, so that natural degradation is realized, and environmental pollution is avoided; the mechanical property is good, the aging resistance is realized, and the oxygen barrier property is strong; the food packaging box is suitable for various foods, effectively prolongs the shelf life, and meets the requirement of green packaging.

The invention discloses a slow-release antibacterial and antioxidant composite preservative film and a preparation method thereof. The slow-release antibacterial and antioxidant composite preservative film is prepared from a chitosan matrix and Chuzhou chrysanthemum essential oil nano-emulsion loaded in the chitosan matrix, the Chuzhou chrysanthemum essential oil nano-emulsion comprises Chuzhou chrysanthemum essential oil, a surfactant and a cosurfactant, and the average particle size of the Chuzhou chrysanthemum essential oil nano-emulsion is smaller than 200 nm; the composite preservative film has the function of slowly releasing the Chuzhou chrysanthemum essential oil and shows antibacterial and antioxidant activity; the preparation method comprises the following steps: firstly preparing Chuzhou chrysanthemum essential oil into a nano-emulsion by adopting a nano-encapsulation method through a high-pressure homogenization method to form the Chuzhou chrysanthemum essential oil nano-emulsion, then embedding the Chuzhou chrysanthemum essential oil nano-emulsion into chitosan to prepare an active chitosan composite film, and finally applying the antibacterial coating material to food preservation. The antibacterial coating film not only can effectively inhibit pathogenic microorganism infection in berry storage and logistics transportation in a wider spectrum, but also can regulate physiological metabolism of picked berries, delay the senescence process and reduce loss of internal moisture.

The invention relates to an enzyme response antibacterial carbon dot and a preparation method and application thereof.The carbon dot takes a copper-doped carbon dot as a core and is covalently grafted with a hyaluronic acid shell layer through amidation reaction to form a composite nano material Cu-CDs (at) HA, specifically, soluble copper salt and folic acid are subjected to a hydrothermal reaction to obtain the copper-doped carbon dot, carboxyl is activated through EDC / NHS in a buffer system, and the carbon dot is prepared. And performing grafting reaction with hyaluronic acid to obtain a target product. The hyaluronidase-containing antibacterial composition can be specifically degraded and release antibacterial components under the action of hyaluronidase, shows good bacterial responsive bactericidal performance, has the minimum inhibitory concentrations of 8 g / mL and 16 g / mL for staphylococcus aureus and escherichia coli respectively, and has peroxidase-like activity and free radical scavenging capacity. The antibacterial carbon dots can be used for preparing intelligent wound dressings, antibacterial coatings and other biomedical materials, and have the advantages of responsive drug release, efficient antibacterial property and promotion of wound repair.

The application discloses a high-performance corrugated carton with waterproof and antibacterial functions and a preparation process thereof, and the process comprises the following steps: S1, providing a corrugated paperboard substrate; S2, coating a barrier-enhanced coating liquid on the inner and outer surfaces of the corrugated paperboard substrate respectively, and forming a barrier-enhanced coating layer after solidification; S3, coating a composite antibacterial coating liquid, and forming a composite antibacterial coating layer after solidification to obtain a composite corrugated paperboard; and S4, using the composite corrugated paperboard to make a corrugated carton. The composite antibacterial coating layer can improve the waterproof performance of the composite corrugated paperboard and endow the composite corrugated paperboard with excellent antibacterial performance. Through cooperation of the barrier-enhanced coating layer and the composite antibacterial coating layer and with the excellent barrier effect of the barrier-enhanced coating layer, the waterproof performance of the composite corrugated paperboard can be further improved while avoiding the risk that active oxygen brought by the composite antibacterial coating layer may damage the performance of the corrugated paperboard substrate, and the mechanical strength of the composite corrugated paperboard can be improved, so that the service life of the composite corrugated paperboard can be ensured.

The invention discloses an antibacterial coating which comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-35 parts of polyamide resin, 5-10 parts of tea tree essential oil, 1-3 parts of di (2-ethylhexyl) phthalate, 1-2 parts of fumed silica, 1-2 parts of acrylate, 1-2 parts of sodium phosphate and 1-2 parts of polyvinyl ether. The component B comprises the following raw materials in parts by weight: 20-30 parts of modified nano zinc oxide, 40-60 parts of an antibacterial curing agent, 15-20 parts of butanol and 2-10 parts of acetone. The weight ratio of the component A to the component B is 8: (2-4), and the water-resistant coating is excellent in mechanical property, high in adhesive force and good in water resistance.

The application relates to a modified polylactic acid oligomer and a preparation method and application thereof. The modified polylactic acid oligomer has the structure shown in the following formula (I). The modified polylactic acid oligomer obtained by copolymerization of 5-hydroxy-2-hexenoic acid and lactic acid has more excellent and stable and persistent antibacterial activity, the antibacterial efficiency is greatly improved, the sterilization rate is improved, and the sterilization time is shortened; when the modified polylactic acid oligomer is applied to various antibacterial coatings and textile finishing, the surface no longer has a wet sticky feeling, the commercialization and wide application of the material are more beneficial, and the modified polylactic acid oligomer has higher affinity to a target substrate, so that the persistence, stability and washability of a surface coating can be improved.

The invention discloses a pH / temperature dual-response type quaternary ammonium salt-nano silver-zinc oxide composite antibacterial coating material as well as a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The antibacterial effective life of the coated product is at least up to 5 years. The coating product is preferably a gastrointestinal endoscope, efficient bacteriostasis is achieved under the condition that the light transmittance of the gastrointestinal endoscope is not affected, biocompatibility is good, safety is high, precise controlled release of silver ions is achieved, and biotoxicity caused by sudden release of the silver ions is avoided. The quaternary ammonium salt-nano silver-zinc oxide composite coating material with the pH / temperature dual-response antibacterial effect is finally obtained through the steps of preparing a composite carrier material, loading antibacterial metal elements, constructing a pH / temperature dual-response polymer network and the like in sequence. A high-performance, safe and environment-friendly antibacterial coating system which is rapid in sterilization, precise in controlled release and long-acting in interference resistance is constructed, and an antibacterial solution with high technical adaptability is provided for the fields of medical treatment, food, water treatment and the like.

The application relates to a cyclodextrin grafted N-cationic borneol ester polymer antibacterial material, which has the following structure: wherein x is the structural unit number of the N-cationic borneol ester, that is, the polymerization degree, x=20-100; X ‑ =F ‑ , Cl ‑ , Br ‑ or I ‑ . Meanwhile, the application also discloses a synthesis method of the polymer antibacterial material. The natural cyclic oligosaccharide antibacterial material grafted with natural active molecules has higher antibacterial activity, broad-spectrum antibacterial performance and good biocompatibility, can be applied to the biomedical field, and can be used for preparing fruit preservative materials, antibacterial coating, antibacterial fabric and other antibacterial materials.

The invention discloses a recycled PP composite material with flame-retardant and antibacterial properties and a preparation method thereof, and relates to the technical field of recycled PP composite materials. The recycled PP composite material with flame-retardant and antibacterial properties is prepared from the following raw materials in parts by weight: 60 to 75 parts of recycled PP, 15 to 25 parts of modified magnesium hydroxide, 3 to 8 parts of modified chitosan, 2 to 5 parts of ethylene-vinyl acetate copolymer, 0.5 to 1.5 parts of silane coupling agent KH-550, 8 to 15 parts of ammonium polyphosphate, 0.3 to 0.8 part of calcium stearate, 1 to 3 parts of nano titanium dioxide and 0.2 to 0.6 part of tributyl citrate. The recycled PP composite material has the remarkable advantages that the recycled PP is used as a base material, so that the environment is protected and the cost is low; through compounding of modified magnesium hydroxide, modified chitosan and the like, the flame-retardant antibacterial coating has excellent flame-retardant and antibacterial properties; the preparation process is clear and controllable, the raw material compatibility is scientific, the compatibility of the components is good, the product performance is stable, and the application prospect is wide.

The utility model relates to the technical field of coating sprayers, in particular to a sprayer for an antibacterial coating on the inner side of a milk powder can, which comprises a base, the inside of the base is of a central control structure, two sliding grooves are symmetrically formed in two sides of the top of the base, an adjusting motor is connected to the left side wall of the inside of the base, and an output shaft of the adjusting motor is coaxially connected with a bidirectional threaded rod. The two sides of the bidirectional threaded rod are symmetrically connected with two moving plates in a threaded mode, the tops of the moving plates are connected with sliding blocks, the bottoms of the sliding blocks are slidably connected with the inner walls of the corresponding sliding grooves, the inner sides of the sliding blocks are connected with moving bases, mounting grooves are formed in the inner sides of the moving bases, and arc-shaped clamping plates are fixed to the inner walls of the mounting grooves. And a spraying mechanism is arranged on the U-shaped mounting frame. According to the sprayer for the antibacterial coating on the inner side of the milk powder can, by arranging an adjusting motor, a bidirectional threaded rod, a moving plate, a sliding block, a moving seat and an arc-shaped clamping plate, the sprayer can assist in fixing the milk powder can, and therefore the position of the milk powder can is prevented from shifting in the coating process.

The utility model discloses a fresh-keeping device for agricultural product transportation, and relates to the technical field of agricultural product transportation, the fresh-keeping device comprises a box body, a sealing cover, a phase change material layer, a humidity adjusting system, a buffer structure and an intelligent monitoring module, the box body is of a double-layer heat insulation structure, the outer layer is an EPS heat insulation layer, the inner layer is a PE layer, and the middle is filled with phase change materials; the humidity adjusting system comprises a water absorption pad located at the bottom of the box body and a breathable film located at the top of the sealing cover, the buffering structure is a supporting frame, and the surface of the buffering structure is covered with a nano-silver antibacterial coating. Through the cooperation of the double-layer heat insulation structure (EPS + PE) and the phase change material (the phase change temperature of 0-10 DEG C), the temperature in the box is kept stable in a passive mode, the respiration and microbial activity of agricultural products are inhibited, and compared with traditional normal-temperature packaging, the fresh-keeping period is prolonged by 30%-50% (for example, the fresh-keeping period of strawberries is prolonged from 3 days to 7 days). The water absorption pad (sodium polyacrylate) absorbs condensate water, redundant water vapor is discharged in combination with the BOPP anti-fog breathable film (the micropores are 0.1-1 micron), and the humidity is accurately controlled to be 85%-95%.

The application belongs to the technical field of dental antibacterial materials, and discloses a kind of nanometer composite antibacterial coating for dental material and preparation method thereof.Method: monomer modified arginine, monomer N-isopropyl acrylamide, monomer methyl hexyl acrylate, initiator azobisdimethylamino propanamide hydrochloride, dispersing agent cetyltrimethylammonium bromide and crosslinking agent N,N-methylene bis(acrylamide) are dissolved in water, and the reaction is carried out under protective atmosphere, dialysis, to obtain nanogel dispersion;The nanogel dispersion is mixed with the nanometer zinc oxide dispersion to obtain a nanogel composite zinc oxide antibacterial coating, and a coating is formed after coating.The nanometer composite antibacterial coating for dental material has excellent retention capacity and antibacterial performance.

The utility model discloses an antibacterial coating curing device with an adjusting function. The antibacterial coating curing device comprises a base, and a box body is mounted at the top end of the base; a drying mechanism is arranged in the top end of the box body, and a conveying assembly is arranged in the box body; wherein the drying mechanism comprises an air pipe mounted in the top end of the box body, a strip-shaped frame is mounted at the bottom end of the air pipe, a strip-shaped ring groove is formed in the strip-shaped frame, spraying pipes are mounted on the inner side of the strip-shaped frame, a mounting frame is mounted at the top end of the air pipe, and pipelines are symmetrically mounted in the top end of the box body; therefore, the effect of rapidly drying and curing the antibacterial coating on the surface of the plate can be achieved, then the curing efficiency of the antibacterial coating can be greatly improved, the efficiency is higher compared with the mode of only curing the coating on one side of the plate in the prior art, the overall use flexibility of the device can be improved, and the effect of curing, adjusting and processing various plate coatings is achieved.

The invention belongs to the technical field of microbial protection and functional metal coating preparation, and particularly relates to a preparation method of a metal-based graphene oxide and zirconium oxide composite antibacterial coating on a flexible metal foil through magnetic field assisted jet electrodeposition. According to the method, a metal ion electroplating solution containing graphene oxide and zirconium oxide serves as a raw material on a flexible metal substrate, ferromagnetic particles are introduced to serve as a carrier, one-time forming is carried out under the action of a magnetic field through the scanning jet electrodeposition technology, and efficient fixing and uniform distribution of graphene oxide and zirconium oxide in a metal coating are achieved. The prepared coating is compact in structure and high in binding force, after the coating is in contact culture with escherichia coli and staphylococcus aureus for half an hour, the antibacterial rate reaches 94% or above, the antibacterial rate reaches 97% or above, and the coating has excellent stability and reliability. The method disclosed by the invention is simple and convenient in process and high in adaptability, can form a high-performance antibacterial coating on a flexible substrate, is suitable for the antifouling and anticorrosion fields of public health facilities, marine protection and engineering equipment, and has a wide industrial application prospect.

The invention belongs to the technical field of anticorrosive and antibacterial coatings, and particularly relates to a self-repairing antibacterial anticorrosive coating and a preparation method thereof. The core-shell structure nanofiber membrane with a high polymer material as a shell and a metal corrosion inhibitor as core liquid is prepared by adopting a coaxial electrostatic spinning technology. An epoxy resin coating is sprayed on an iron sheet in advance, the sprayed epoxy resin is subjected to low-temperature pretreatment to be in a semi-solidified state, and a core-shell structure nanofiber membrane is attached to the pretreated epoxy resin coating; and finally, spraying the epoxy resin containing the antibacterial agent and the antibacterial agent ethanol solution on the surface of the fiber membrane again to prepare the composite coating with a sandwich structure. The prepared composite coating has good antibacterial ability, after the iron sheet coating is damaged, the anti-corrosion coating can rapidly release an anti-corrosion healing agent to rapidly repair the damaged part of the coating, and the composite coating has efficient self-repairing anti-corrosion ability and has good application prospects in the anti-corrosion field.

The invention relates to a high-antibacterial-property coating and a preparation method thereof. The high-antibacterial-property coating is prepared from the following raw materials in parts by weight: 35-40 parts of epoxy resin, 2-6 parts of inorganic nano filler, 0.5-1.5 parts of an inorganic antibacterial agent, 0.2-0.6 part of an organic antibacterial agent, 1-3 parts of a silane coupling agent, 8-12 parts of a curing agent, 3-5 parts of a diluent, 0.5-1.0 part of a defoaming agent, 0.1-0.3 part of a flatting agent and 50-100 parts of a solvent. The organic antibacterial agent is a 1, 3, 5-triazine compound. The antibacterial stainless steel surface coating has the effect of improving the antibacterial property of the stainless steel surface coating.

The invention discloses antibacterial coating liquid, a preparation method thereof and an implantable medical device. In preparation of the antibacterial coating liquid, firstly, polyvinyl alcohol and phytic acid are mixed and stirred to realize crosslinking, and then the mixture is mixed with tannic acid and an SBMA zwitterionic solution to prepare the coating liquid. The coating liquid can be loaded on the surface of a substrate through a simple method to prepare an antibacterial coating, and the coating has excellent adhesion performance and can be prevented from falling off in the use process. Due to the excellent hydrophilicity, the adhesion of bacteria, platelets and the like can be effectively reduced. Meanwhile, the phytic acid and cationic groups in the SBMA zwitterions are combined with bacterial cell membranes through electrostatic interaction, so that the bacterial structure is destroyed, and the antibacterial performance of the coating is further enhanced. In an in-vivo implantation experiment, the coating shows good biocompatibility.

The invention discloses a building drainage system pressure stabilizing device and method based on S-shaped center deviation design, and belongs to the technical field of building drainage. In order to solve the problem that pressure fluctuation is large when a traditional S-shaped pipeline drains water, the device is composed of an S-shaped pipe, a thickened connector, an annular clamping groove, a sealing ring, a straight pipe cavity, a bent pipe cavity, a spiral blade and a flow guide plate. The S-shaped pipe is made of a high-density polyethylene material, and the inner wall of the S-shaped pipe is coated with a silver ion nano antibacterial coating; the inner wall is provided with an annular clamping groove which is clamped with an ethylene propylene diene monomer sealing ring; the inner wall of the straight pipe cavity is provided with annular array spiral blades, and the inner wall of the bent pipe cavity is provided with a flow guide plate matched with the bending degree. Water flow forms spiral wall-attached flow through the spiral blades, the spiral wall-attached flow and the central air core are directionally guided through the guide plates, the pipeline pressure is stabilized, smooth drainage is guaranteed, and the blocking risk is reduced.

The utility model provides an antibacterial coating quality detection device, and relates to the technical field of antibacterial coating quality detection equipment, the antibacterial coating quality detection device comprises a detection device body and a sample storage drawer, one side of the detection device body is provided with a detection sample placing groove, and the sample storage drawer is slidably connected to the inner wall of the detection sample placing groove; a first fixing plate is fixed on the inner wall of the detection sample placing groove, a second fixing plate is fixed on one side of the first fixing plate, two first sliding grooves are formed in the inner side of the second fixing plate, locking control pieces are slidably connected to the inner walls of the first sliding grooves, locking control grooves are formed in the tops of the locking control pieces, and springs are fixed on one sides of the locking control pieces; the other end of the spring is fixed to one side of the first fixing plate, the top of the first fixing plate is rotationally connected with a locking control rod, the other end of the locking control rod is rotationally connected with a first sliding rod, a second sliding rod is fixed to one side of the locking control rod, a collision cap is fixed to one end of the second sliding rod, and the second sliding rod is slidably connected to the inner wall of the second fixing plate in a penetrating mode.

The present invention relates to an antimicrobial coating composition comprising, based on the total weight of the coating composition, 30-60% by weight of a polyester resin, 3-15% by weight of a curing agent, 0.1-5% by weight of an antimicrobial agent, 0.1-15% by weight of a pigment, and the balance being a solvent. The present invention further relates to an antimicrobial coated steel sheet comprising a steel sheet and an antimicrobial coating layer formed on at least one surface of the steel sheet, the antimicrobial coating layer containing an antimicrobial agent in at least a part thereof, the antimicrobial agent having a content ratio Z / (M+Ca) of 0.1-0.5, M being Ca, Ba, Mg, Zn, Ni, Fe or Al, and Z being P, As, V or Si. The antimicrobial coating composition according to the present invention contains an antimicrobial agent. When the composition forms a coating layer, the antimicrobial agent is concentrated on the surface of the coating layer, so that microorganisms adsorbed on the surface of the coating film together with moisture are effectively killed by hydroxyl radical species and hydroxide anions generated on the surface of the coating film. Thus, a coated steel sheet using the antimicrobial coating composition according to the present invention has excellent design properties as well as excellent processability, chemical resistance, etc.

The application discloses a manufacturing method of a non-stick pot with wear-resistant and antibacterial coating, which comprises the following steps: S1, extruding an aluminum or aluminum alloy base material to form a non-stick pot blank; S2, placing the non-stick pot blank into a centrifugal steel shot machine, and performing a shot blasting roughening treatment by using silicon carbide ceramic as a shot, so that a concave-convex protruding structure is formed on the inner surface of the pot; S3, cleaning the non-stick pot blank, and then performing a hard anodic oxidation treatment and cleaning; and S4, performing a spraying operation of the wear-resistant and antibacterial coating on the inner surface of the non-stick pot blank, and then baking at a temperature of 320-410 DEG C for 10-20 min to obtain the non-stick pot with the wear-resistant and antibacterial coating. The non-stick pot prepared by the method has excellent bonding force between the coating material and the non-stick pot blank, and has good wear resistance, antibacterial property, thermal stability and chemical stability.

The application discloses a multifunctional antibacterial coating bone implant device based on a selective vacuum perfusion process and a preparation method thereof. The method comprises the following steps: 1) pretreating a titanium alloy base; 2) performing anodic oxidation treatment on the pretreated titanium alloy base to construct a nanotube structure on the surface of the titanium alloy base; 3) selectively coating the treated titanium alloy base with a hydrogel adhesive, then immersing the titanium alloy base in a povidone iodine mixed solution to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a bone growth promoting factor to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a blood vessel growth promoting factor to perform vacuum perfusion, and performing post-treatment; and 4) encapsulating the obtained sample surface with an in-situ self-polymerized polydopamine layer, washing and freeze-drying. The bone implant device has antibacterial, bone growth promoting and blood vessel growth promoting functions, and can greatly improve the curative effect on bone fracture symptoms accompanied by infection.

The application discloses a kind of photoresponsive self-repair antibacterial nylon materials and preparation method thereof.The material is modified nylon 6 polymer, aromatic Schiff base dynamic imine bond generated by condensation reaction of carboxyl benzaldehyde and p-phenylenediamine is embedded in its molecular main chain, which gives the material the ability of light-triggered self-repair without external heat source, and unexpectedly improves the mechanical properties and thermal stability of the material, the molecular chain end is bonded with antibacterial organic acid through amide bond, and the antibacterial organic acid is 2-methyl-4-(trifluoromethyl) thiazole-5-carboxylic acid.The preparation method adopts one-pot two-stage polymerization, after pressure opening ring prepolymerization, pressure relief vacuum is carried out to carry out deep condensation and end-capping, and the product is obtained by extrusion granulation and drying.The material can realize room temperature self-repair under natural light, and the antibacterial component is non-dissolution fixed.The application process is simple, the performance is adjustable, and can be used in the field of intelligent packaging, repairable antibacterial coating and biomedical materials.

A valve including an antibacterial agent may be used with a needleless access connector. The valve may have an insert including an antibacterial coating thereon, and / or the valve may have physical features containing an antibacterial agent, such as a series of channels or grooves or patterned surfaces, and / or the valve may be made of a material including an antibacterial agent.

The invention relates to the technical field of coatings, and discloses a water-based antibacterial coating for building wall surfaces and a preparation method thereof, the water-based antibacterial coating is prepared from the following components: acrylic emulsion, a coalescing agent, titanium dioxide, mica powder, a defoaming agent, a thickening agent, a dispersing agent, a composite nano material and deionized water; the water-based antibacterial coating for the building wall surface prepared by the invention not only can form a compact and uniform coating on the surface of the building wall surface, but also can form tight combination with the building wall surface, so that the binding force between the coating and the building wall surface is greatly improved, and meanwhile, the coating prepared by the invention also has excellent antibacterial performance.

Antimicrobial eyewear features frames infused with or coated with antimicrobial additives, thereby offering continuous protection by actively destroying and inhibiting the growth of bacteria, fungi, parasites, and some viruses. The lenses may also have an antibacterial coating that destroys and inhibits bacterial growth. In some examples, the lenses are treated with a specialized strengthening liquid, wherein the liquid contains nano components that release heavy metal ions capable of invading the cell walls of bacteria, leading to bacterial elimination, destroying DNA molecules and proteases within the bacterial cells, denature viral proteins, break DNA chains, and result in cell death. Additionally, the strengthening liquid reduces dehydrogenase activity and interacts with various protein groups within the cell, thereby reducing the activity of these groups and effectively inhibiting the growth of E. coli and other bacteria on the lens surface.

The utility model discloses a drainage tube pull-out post-operation dressing change component, including support rod and dressing, the support rod includes support section and handle, the dressing is wrapped in the support section, the dressing is bonded with the support section, the dressing includes cotton yarn layer and antibacterial coating. According to the dressing changing assembly after the drainage tube is pulled out, treatment can be conducted according to the recovery condition of a wound, dressing can stretch into the wound or even the peritoneum of the abdominal cavity through the supporting rod, the wound can be better sterilized and killed, and the wound can be better recovered.

The application relates to the technical field of antibacterial coating ureteral stents, and discloses an antibacterial coating ureteral stent, which comprises a telescopic liquid-permeating mechanism, and both ends of the telescopic liquid-permeating mechanism are provided with fixing mechanisms. The antibacterial coating ureteral stent and the implanting device thereof are provided with the telescopic liquid-permeating mechanism, the fixing mechanism, the guide wire mechanism and the pushing mechanism, can form elasticity through the vortex fixed end pipe and the spring permeation pipe during use, can self-adapt to the elastic telescoping of the ureter when the patient's body position changes or moves, and can form storage for the end part through the multilayer vortex structure of the vortex fixed end pipe, so that rigid contact of the top end with the renal pelvis and the bladder wall is avoided, and the comfort of the patient is improved.

The application relates to the technical field of building, and discloses indoor sound insulation and antibacterial coating, which is applied to the surface of a building wall base layer and comprises, from inside to outside, a high-permeability alkali-resistant sealing primer layer, a porous composite sound-absorbing middle layer for gap friction attenuation of sound waves, an antibacterial agent slow-release depot layer for providing long-acting antibacterial active substances, and a photocatalytic sterilization and purification layer. The composite coating system of the application resolves the technical problems of easy agglomeration of sound-absorbing fillers and nanometer antibacterial agents in direct blending in traditional processes and mutual hindering of the effects by scientifically constructing a multi-dimensional functional layered system. The system not only realizes excellent broadband sound insulation and noise reduction effects by virtue of the composite acoustic structure of quality reflection, porous dissipation and damping heat conversion, but also combines the double-effect biochemical mechanisms of deep ion slow release and surface photocatalysis to ensure long-acting broad-spectrum sterilization and decomposition of volatile organic compounds.

The application discloses an antibacterial wear-resistant packaging paper and a production process thereof, and belongs to the technical field of packaging paper. The production process comprises the following steps: S1, polyvinyl alcohol is added into deionized water, and the polyvinyl alcohol is dissolved under stirring at 95 DEG C to obtain a PVA solution; after the PVA solution is cooled to room temperature through mechanical stirring, a siloxane grafted quaternary ammonium cellulose suspension, a wear-resistant component and a crosslinking agent are added; after stirring at room temperature for 1 h, an antibacterial coating solution is obtained; and S2, the antibacterial coating solution is uniformly coated on the surface of a packaging base paper, the coating thickness is 60-100 microns, and the packaging paper is dried at 90-100 DEG C for 30-60 min; after being cooled to room temperature, the antibacterial wear-resistant packaging paper is obtained. In the antibacterial coating solution, the siloxane grafted quaternary ammonium cellulose and the wear-resistant component are introduced, and various combination relationships exist between the two, so that the coating density is increased, the packaging paper is endowed with good antibacterial property, and the water resistance and wear resistance of the packaging paper are improved.