195 results about "Particle coating" patented technology

The invention relates to the technical field of new energy battery materials, in particular to a surface-coated sulfide solid electrolyte as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing and stirring a sulfide solid electrolyte and a first solvent to obtain a first mixed solution; mixing and stirring nanoparticles with oxygen-containing functional groups and a second solvent to obtain a second mixed solution; adding the second mixed solution into the first mixed solution, and stirring to obtain a third mixed solution; and carrying out vacuum drying on the third mixed solution to obtain the surface-coated sulfide solid electrolyte. The sulfide solid electrolyte is subjected to surface particle coating through simple mixing and vacuum drying, oxygen-containing functional groups are attached to the surfaces of the particles, so that the material is more oxygen-loving, the air stability of the sulfide solid electrolyte is improved, and the material still keeps high ionic conductivity and has good electrochemical performance. And moreover, the machining process is reduced, the machining cost is reduced, and the practical application value is higher.

A reactor for coating particles includes a stationary vacuum chamber to hold a bed of particles to be coated, a chemical delivery system, and a paddle assembly. The paddle assembly includes a rotatable drive shaft and a first plurality of paddles and a second plurality of paddles that extend radially from the drive shaft. The spacing, cross-sections, and oblique angles of the paddles are such that orbiting of the paddles causes the first plurality of paddles and the second plurality of paddles to displace substantially equal volumes in opposite directions in the lower portion of the stationary vacuum chamber.

The utility model relates to the technical field of coating, in particular to a refractory material particle coating device which comprises a processing box, a coating chamber is installed in the processing box, a receiving and sending opening is formed in one side of the coating chamber, a coating groove is formed in each of the two sides of the coating chamber, an isolation chamber is formed in the processing box, and a coating groove is formed in the isolation chamber. A first electric telescopic rod is installed in the isolation chamber, a lower clamp is installed at the output end of the first electric telescopic rod, an upper clamp is installed at the top end in the coating chamber, the two sides of the interior of the processing box are each provided with a mounting groove, and the interiors of the two mounting grooves are each provided with a lead screw; the outer sides of the two lead screws are each sleeved with a sliding plate, and two second electric telescopic rods are installed on one side of each sliding plate. The two sides of the material can be coated with adhesives at the same time, the coating speed is increased, and the production efficiency is improved.

The invention discloses a preparation process of instant donkey-hide gelatin granules. The preparation process comprises the following steps: preparing donkey-hide gelatin powder; preparing an adhesive from donkey-hide gelatin powder, hydroxypropyl methyl cellulose, sucrose ester-13 and water; putting the rubber powder into a raw material container of a boiling granulator for granulating; drying the granules in a microwave drying oven; and drying the granules in an infrared electric heating drying box, and spraying a coating agent solution for coating to obtain the instant donkey-hide gelatin granules. Through boiling granulation, a solid dispersion technology and a particle coating and microwave drying technology, the problems that instant donkey-hide gelatin particles are prone to caking, poor in dissolubility and poor in taste are solved, meanwhile, the smell of donkey-hide gelatin is reduced and the solubility is improved through selection of a coating agent, and the instant donkey-hide gelatin particles prepared through the technology reduce the dryness of donkey-hide gelatin, so that the quality of the donkey-hide gelatin particles is improved. Internal heat caused by long-term use of colla corii asini is effectively prevented, the content of volatile alkaline substances in the product is reduced, the stability is improved, and the product quality is improved.

The invention discloses an inorganic pigment-based colored radiation cooling coated fabric which comprises a fiber fabric, and a daytime passive radiation coating and a modified inorganic pigment coating which are sequentially coated on the surface of the fiber fabric, the daytime passive radiation coating is an inorganic nano particle coating; the particle size distribution of the inorganic nanoparticles is nanoscale, the sunlight reflectivity of the inorganic nanoparticles is more than 90%, and the mid-infrared radiance of the inorganic nanoparticles is more than 85%; the preparation method of the modified inorganic pigment comprises the following steps: ball-milling an inorganic pigment, adding the ball-milled inorganic pigment into an organic solvent, adding an inorganic non-metallic material, uniformly mixing, standing, taking an upper-layer solution, and drying to obtain inorganic non-metallic microspheres of which the surfaces are adsorbed with the inorganic pigment; and calcining the inorganic nonmetal microspheres with the inorganic pigment adsorbed on the surfaces to obtain the modified inorganic pigment. The problems that in the prior art, a radiation cooling coating is monotonous in color, complex in preparation method, high in cost and the like are solved.

A reactor for coating particles includes a stationary vacuum chamber to hold a bed of particles to be coated, a chemical delivery system, and a paddle assembly. The paddle assembly includes a rotatable drive shaft and a first plurality of paddles and a second plurality of paddles that extend radially from the drive shaft. The spacing, cross-sections, and oblique angles of the paddles are such that orbiting of the paddles causes the first plurality of paddles and the second plurality of paddles to displace substantially equal volumes in opposite directions in the lower portion of the stationary vacuum chamber.

The utility model relates to the technical field of pharmacy, and discloses an efficient coating machine roller structure which comprises a box body and a tablet roller, an opening and closing assembly is arranged on the front end face of the box body, a liquid spraying assembly is arranged on the opening and closing assembly, and a rotating rod is arranged in an inner cavity of the tablet roller through a supporting rod. The supporting rod and the center line of the tablet roller are arranged in an inner cavity of the tablet roller in parallel, an S-shaped rotating blade is arranged on the rotating rod, the center of the rotating blade is connected with the rotating rod, the two ends of the rotating rod are sleeved with rotating springs, one end of each rotating spring is connected with the supporting rod, and the other end of each rotating spring is connected with the tablet roller. And the other end is connected with the end face of the rotating blade. According to the roller structure of the efficient coating machine, through the arrangement of the rotating blades, the device can turn over and stir medicine particles to be subjected to liquid spraying and coating in the medicine particle roller, so that the medicine particles are in full contact with medicine liquid sprayed by the liquid spraying head, and the uniformity of medicine particle coating is guaranteed.

The invention relates to a multifunctional magnesium alloy coating with high biocompatibility and a preparation method and application thereof. Comprising the following steps: (1) carrying out surface treatment on a magnesium alloy substrate; (2) micro-arc oxidation treatment; (3) after preparing a coating solution, carrying out double-sided ultrasonic atomization spraying; and (4) drying, soaking and cleaning. According to the preparation method, a micro-arc oxidation treatment technology and a double-sided ultrasonic atomization spraying technology are combined for the first time, pores and cracks of the MAO coating serve as binding sites, effective loads are provided for the silk fibroin / nano-hydroxyapatite particle coating, the MAO coating and the SF / nHAp coating are fully combined, and the composite coating is prepared. According to the coating, the MAO coating and the SF / nHAp coating are combined for the first time, the defect of rapid degradation when the magnesium alloy serves as an in-vivo implant is effectively overcome, the corrosion resistance of the magnesium alloy is remarkably improved, the release rate of hydrogen after implantation is reduced, and rising of the pH value around the implant is slowed down.

The invention discloses a single battery, a battery device and electric equipment, the single battery comprises a positive pole piece, a negative pole piece and an isolating membrane, the positive pole piece comprises a positive current collector, a positive active material layer comprises lithium-containing phosphate, the positive current collector comprises a coating part and a tab part, the tab part extends out of the coating part along the height direction of the single battery, and the negative active material layer comprises lithium-containing phosphate. The size of the positive electrode active material layer accounts for 83%-88% of the size of the shell; the negative pole piece comprises a negative current collector and a negative active material layer arranged on at least one side of the negative current collector, the size of the negative active material layer is greater than that of the positive active material layer along the height direction of the battery monomer, the difference value between the size of the negative active material layer and the size of the positive active material layer is OH1, and the condition that the OH1 is greater than or equal to 1.5 mm and less than or equal to 3.3 mm is met; the isolating membrane comprises a base membrane and a coating arranged on at least one side of the base membrane, the coating comprises a binder and fluorine-containing organic particles, and the total thickness of the coating is 3-7 microns.

Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may comprise a plurality of coated roofing granules, wherein each of the plurality of the coated roofing granules may comprise a roofing granule having an outer surface; and a granule coating, wherein the granule coating is disposed on at least a portion of the outer surface of the roofing granule, and wherein the granule coating comprises graphene. Some embodiments of the present disclosure relate to a roofing material, wherein the roofing material may further comprise a reflective base coating, wherein the reflective base coating is positioned between the outer surface of the roofing granule and the granule coating.

The invention relates to a combined strengthening method of critical heat flux density and a visual experiment device, after a water glass nano solution is uniformly sprayed on a boiling wall surface, the water glass nano solution is further heated until the water glass nano solution on the boiling wall surface is bubbled and solidified on the boiling wall surface, a nano-particle coating is obtained after polishing, a specific dropper device is adopted in the boiling process, and the water glass nano solution on the boiling wall surface is solidified on the boiling wall surface. The supercooled liquid is dropwise added on the boiling wall surface, the critical heat flux is accurately measured by adopting a visual experimental device, and the critical heat flux strengthening mechanism is verified by shooting images. The prepared nano-particle coating is high in porosity, the hydrophilicity of the boiling wall surface can be remarkably improved, the dropper device is simple in structure and low in cost, formation of irreversible dry spots can be inhibited, and the critical heat flux density is improved through the superposition effect of the two methods. The device is low in cost, easy and convenient to operate, high in expansibility and capable of being rapidly applied to boiling wall surfaces made of different materials. A pool boiling experiment device is adopted as the visual experiment device, and the mechanism and the effect of critical heat flux density strengthening are verified.

An in-line coating machine adapted to coat food products with a particulate coating material has a food products conveyor assembly, a coating device arranged between the inlet and the outlet of the machine, and an excess coating material separation station configured to cause excess coating material to be separated from coated food products in order to recover excess coating material for re-use. An excess coating material recovery conveyor has a bed support and a recovery conveyor run above the bed support. A particulate coating material elevator device receives a portion of the excess coating material from the recovery conveyor and supplies the excess coating material to the coating device for re-use. An elevator device fill assembly along the recovery conveyor is configured to fill the elevator device with recovered excess coating material. Herein a coating material supply unit comprises slide plates which are mounted at an inclination.

The invention provides an in-situ tissue engineering valve stent material as well as a preparation method and application thereof, and belongs to the technical field of medical materials. According to the invention, the surface of the acellular matrix is loaded with the super-particle coating formed by self-assembly of the polyphenol-mediated polypeptide aggregate and the Prussian blue nano-enzyme, so that the stent material is endowed with double ROS regulation and endothelial cell adhesion promoting functions, excessive deposition of collagenous fibers can be prevented, and fibrosis of valve tissues is avoided; the synergistic effect of the components of the super-particle coating promotes the endothelialization process of the stent and the remodeling of a functional extracellular matrix, so that the accelerated formation of the functional endodermis is finally realized, and a powerful guarantee is provided for the success of clinical transformation of an in-situ heart valve tissue engineering technology.

The invention belongs to the technical field of coating granulation, and particularly relates to a vertical efficient coating granulation reaction kettle. Comprising a support, the support is fixedly connected with a reaction kettle, a stirring module is arranged in the reaction kettle, a material mixing barrel is fixedly connected in the reaction kettle, a discharging shell is arranged in the material mixing barrel, the material mixing barrel is rotationally connected with a material dispersing barrel, through holes are evenly distributed in the material dispersing barrel, and the discharging shell is arranged in the discharging shell. The top of the bulk material barrel is rotatably connected with a butt joint sleeve, the reaction kettle is fixedly connected with a first feeding pipe and a second feeding pipe, and the reaction kettle is fixedly connected and communicated with an air outlet pipe. Powder is diffused by means of gas, the diffused powder adheres to particles in a falling state, a layer of powder adheres to the outer portions of the particles in advance, the particles are isolated from one another in advance, the probability that the particles adhere to one another and agglomerate in the subsequent stirring process is reduced, and the uniformity degree of particle coating is improved.

The utility model relates to the technical field of powder spraying, in particular to a device for conveying powder, which comprises a first powder pipe and a second powder pipe, and the first end of the first powder pipe is connected with the first end of the second powder pipe through a first three-way pipe; the second end of the first powder pipe is connected with the second end of the second powder pipe through a second three-way pipe, and after the first powder pipe and the second powder pipe are connected, the first powder pipe and the second powder pipe are both in an arc shape. After powder coating enters the device, the powder coating collides with the inner peripheral wall of the first powder pipe and the inner peripheral wall of the second powder pipe for multiple times in the arc-shaped first powder pipe and the arc-shaped second powder pipe respectively, and in the collision process, large-particle coating gathered together can be separated, so that the powder coating is separated from the inner peripheral wall of the first powder pipe and the inner peripheral wall of the second powder pipe. According to the device, the large-particle coating is effectively dispersed before entering the spray gun, a series of negative effects caused by non-uniform powder sprayed by the spray gun are avoided, and therefore the spray gun has a better spraying effect.

This invention relates to the field of battery technology, and more particularly to a method for improving the air stability of sulfide solid electrolytes. The method includes the following steps: mixing the sulfide solid electrolyte with a solvent to form a slurry one; mixing a thiol with a solvent to form a slurry two; simultaneously spraying slurry one and slurry two into the center of a mixing device equipped with a drying device, and drying them under the drying device, thereby improving the air stability of the sulfide solid electrolyte. This invention, by spraying the sulfide solid electrolyte and thiol, causes them to collide under a certain airflow, thereby allowing the thiol's mercapto groups to coordinate with metal cations or exposed sulfur vacancies on the surface of the sulfide solid electrolyte, forming stable thiols or complexes, thus achieving the effect of particle coating or partial coating of the sulfide solid electrolyte.

The invention discloses a preparation method and application of an anti-fouling coating system capable of preventing biological adhesion, the anti-fouling coating system capable of preventing biological adhesion comprises a primer and a topcoat, and the primer comprises a first component and a second component. According to the preparation method and application of the anti-fouling coating system capable of preventing biological adhesion, the anti-traditional thinking is used for developing an anti-fouling coating, the surface coating is used for developing a nano composite particle coating, a high-surface-energy nano material is firstly used as a basis, a dark catalytic electrolysis technology is matched for preparation, the characteristic of high surface energy of the nano material is adopted, and the anti-fouling coating system capable of preventing biological adhesion is prepared. Energy is absorbed, stored, converted and released through the composite nano-material, the nano-material breaks walls of marine microorganisms and a generated electric field effectively prevents generation of a biological membrane, then growth of marine bacteria, shells and benthic diatom is effectively inhibited, meanwhile, two-dimensional nano-graphene is adopted to replace traditional graphene oxide for modification, the overall engineering is simple, and the cost is low. More atoms are distributed on the surface, and the coating surface has higher energy.

The solvated metal particle-coating system includes a metal additive and a polar outer-sphere electron transferring solvent. The metal additive is solvated in the polar outer-sphere electron transferring solvent. The polar outer-sphere electron transferring solvent may include liquid ammonia, methylamine, and / or hexamethylphosphoramide. The metal additive may include an alkali metal and / or an alkaline earth metal. The solvated metal additive within the polar outer-sphere electron transferring solvent may be used to coat a metal particle and / or a metalloid particle as a layer. As the polar outer-sphere electron transferring solvent evaporates, the solvated metal additive is coupled to the metal particle and / or the metalloid particle.

Titanium dioxide (Tio2) nanoparticle coated umbrella for UV protection

The invention relates to the technical field of preparation of lithium ion battery diaphragms, in particular to a transition metal oxide coated diaphragm for improving the performance of a lithium iron phosphate battery and a preparation method of the transition metal oxide coated diaphragm. The transition metal oxide coated diaphragm comprises a diaphragm substrate and a diaphragm coating coated on the surface of one side of the diaphragm substrate, and the diaphragm coating is a transition metal oxide particle coating. According to the invention, the transition metal oxide particle material is innovatively coated on the surface of the diaphragm, and the coating is further tightly attached to the lithium iron phosphate positive electrode material through the bonding effect of the binder in the coating, so that the contact resistance of the system is reduced. The high-rate discharge performance and the specific discharge capacity of the lithium iron phosphate are improved by regulating and controlling the proportion and the use amount of the transition metal oxide particle material, the binder and the conductive agent in the coating.

The application discloses a double-cone rotary fluidized bed ALD fluidized reactor and a powder particle coating method thereof. The reactor comprises a fluidized chamber, a deposition tank, a rotating mechanism, gas guide pipes and a vacuum pump. The upper and lower ends of the fluidized chamber are closed. The outer side of the fluidized chamber is symmetrically connected with two gas guide pipes. One of the two gas guide pipes is connected with a fluidizing gas supply system and is used for conveying fluidizing gas containing precursor reaction gas into the fluidized chamber. The other gas guide pipe is sequentially connected with a tail gas detection system and the vacuum pump. The two gas guide pipes are controlled by the rotating mechanism and are used for periodically overturning the reactor according to a overturning period. After each overturning of the reactor, the powder with a large particle diameter is more quickly settled into the deposition tank than the powder with a small particle diameter. The powder particles settled into the deposition tank stop or sharply reduce the opportunity of atomic layer deposition reaction, and the powder particles not settled into the deposition tank are suspended in the fluidizing gas and continue to react with the precursor reaction gas to form a single-layer coating.

This invention discloses a waste conveying device for optical lens processing, relating to the field of cargo conveying technology. It includes a support frame, on which a driven roller and a driving roller are mounted. Side plates are fixedly mounted on both sides of the support frame, and a first baffle and a second baffle are fitted between the two side plates. A dust removal component is also fitted between the two side plates. The dust removal component includes two rotating seats, which are respectively embedded in the two side plates. A hollow rotating roller is rotatably mounted inside each rotating seat. A conveyor belt is sleeved on the driven roller, driving roller, and hollow rotating roller. The conveyor belt has a three-layer structure: an inner belt, a middle belt, and an outer belt. The outer belt is made of high-density polyurethane and has a nano-silicon carbide particle coating on its surface. The conveyor belt of this invention adopts a composite layered structure design, significantly improving overall performance and service life, ensuring stable operation of the conveying system, and extending the maintenance cycle of key components.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to an aqueous zinc ion battery zinc negative electrode and a preparation method and application thereof, and the preparation method comprises the following steps: preparing coating slurry comprising InMOF nanoparticles, a solvent and an adhesive; heating the zinc negative pole piece to 140-160 DEG C; spraying the coating slurry to the surface of a zinc negative electrode plate, then drying, and pyrolyzing the coating slurry to obtain the zinc negative electrode with the MOF coating; the InMOF nano-particle coating is introduced into the zinc negative electrode, and a three-dimensional porous network structure formed by InMOF nano-particles can be used as a rigid zinc ion transmission channel, so that dendritic crystal growth is inhibited, the service life of the battery is prolonged, and the electrochemical performance is improved.

The invention relates to the field of corrosion-resistant fasteners, in particular to a corrosion-resistant fastener and a preparation method thereof. The anti-corrosion fastener comprises a fastener body and an anti-corrosion layer, wherein the surface of the fastener body is sequentially coated with the anti-corrosion layer from inside to outside, and the anti-corrosion layer is a zinc-nickel alloy doped nanometer silicon carbide particle coating layer. The anti-corrosion layer is formed by doping zinc-nickel alloy with nano silicon carbide particles. As the zinc-nickel alloy is used as an electrochemical active material, through a cathode protection mechanism of a sacrificial anode, an oxidation reaction is carried out prior to a matrix metal, so that matrix corrosion is inhibited. Nano silicon carbide particles are introduced, the grain boundary defect of an alloy layer is filled through the physical dispersion strengthening effect, the porosity of the coating is reduced, and a compact physical barrier is formed to block corrosion medium permeation. Active protection of cathode protection and passive protection of physical barrier are combined to a single anticorrosive coating, and the function limitation of a traditional single coating is broken through.

The invention relates to the technical field of particle coating, in particular to a coating reactor based on fluidized bed chemical vapor deposition and a particle coating method. The coating reactor comprises a material barrel, a cover barrel, an exhaust section, a middle path air inlet assembly and a circumferential air inlet assembly, and a heater is arranged on the circumferential wall of the material barrel; the cover cylinder covers the material cylinder and upwards exceeds the material cylinder, a material returning cavity is formed between the cover cylinder and the material cylinder, and the lower end part of the material returning cavity is communicated with the material cylinder; the exhaust section communicates with the upper end of the cover cylinder; the middle path gas inlet assembly is configured to supply gas which flows upwards and carries a precursor into the material barrel; the circumferential air inlet assembly is configured to supply fluidizing gas with the upward flow direction to the material returning cavity in the circumferential direction of the material returning cavity, and the flow speed of the gas carrying the precursor is larger than that of the fluidizing gas. According to the invention, decoupling of the gas cracking process and the cooling film-forming process in space and time can be realized, the complexity of the fluidized bed-chemical vapor deposition process can be reduced, and quantitative experiment research can be conveniently carried out.

The present invention relates to the field of pharmaceutical formulations, and in particular to a fine granule and a preparation method therefor. The provided fine granule is a fine granule having core particles, a coating layer and an additional material layer. Hydroxypropyl cellulose and / or hydroxypropyl methylcellulose in a specific proportion are selected as a tackifier, and low-substituted hydroxypropyl cellulose is used as a disintegrating agent, so that the prepared fine granule has good particle compactness, disintegration performance and dissolution performance. An anti-adherent is homogenized during the preparation of the coating layer material, so that the prepared coating layer material has good anti-adhesion effect, and does not adhere in the particle coating process, thereby ensuring the integrity of the particles. A fluidized granulation coating machine is selected for preparation and coating of the core particles, thereby ensuring more uniform particle size distribution of the fine granule.

The utility model relates to the field of chemical processing, in particular to a device for preparing a nano-particle coating, which comprises a base, support rods are fixedly mounted on the periphery of the top of the base, a top plate is fixedly mounted at the top ends of the support rods, and a receiving barrel is arranged at the top of the base; when the nanometer titanium dioxide powder particles are screened, the nanometer titanium dioxide powder particles are placed in the grinding disc, the motor is used for driving the grinding block to rotate, the nanometer titanium dioxide powder particles are driven to move in the grinding groove, and at the moment, the nanometer titanium dioxide powder particles are separated from the grinding disc. Nano titanium dioxide powder particles with proper volume fall into the inner cavity of the material receiving barrel through the screening holes, and nano titanium dioxide powder particles with larger volume move towards the bottom of the grinding block along with the cambered surface design of the grinding groove, and the nano titanium dioxide powder particles are ground by utilizing the rotation of the grinding block; and the large nanometer titanium dioxide powder particles can be crushed while the particles are screened.

The invention relates to a preparation method of a bamboo secondary particle coating and hard carbon sealing pore structure. According to the method, bamboo powder is used as a raw material, and the functional carbon material with a closed pore structure and a surface coating layer is prepared through the steps of staged carbonization, mechanical grinding, composite coating, aftertreatment and the like. Firstly, bamboo powder is subjected to low-temperature carbonization and high-temperature carbonization treatment, the heating and cooling rate is controlled under the nitrogen atmosphere, and carbonized bamboo powder is obtained; then mixing and grinding the mixture with a solid electrolyte and PVDF, and performing low-temperature carbonization again to form secondary particles; then, gelatin and calcium gluconate monohydrate are used as coating agents and stirred together in a sodium dodecyl benzene sulfonate solution, and surface coating is achieved; finally, freeze-drying, carbonizing at low temperature, pickling with hydrochloric acid, washing with water to be neutral, and drying to obtain a final product. The method is controllable in process and good in repeatability, and has good mechanical strength, chemical stability and function adjustability.

The solvated metal particle-coating system includes a metal additive and a polar outer-sphere electron transferring solvent. The metal additive is solvated in the polar outer-sphere electron transferring solvent. The polar outer-sphere electron transferring solvent may include liquid ammonia, methylamine, and / or hexamethylphosphoramide. The metal additive may include an alkali metal and / or an alkaline earth metal. The solvated metal additive within the polar outer-sphere electron transferring solvent may be used to coat a metal particle and / or a metalloid particle as a layer. As the polar outer-sphere electron transferring solvent evaporates, the solvated metal additive is coupled to the metal particle and / or the metalloid particle.

The invention provides a dialysis catheter based on a swirl flow technology, and relates to the field of dialysis catheters.The dialysis catheter comprises a connecting mechanism, the connecting mechanism comprises a connecting block, a vein connecting pipe and an artery connecting pipe, and a catheter mechanism is arranged at the bottom of the connecting mechanism; the catheter mechanism comprises a venous catheter, a venous side hole, an arterial catheter, an arterial side hole and a spiral flow induction unit, the inner wall and the outer wall of the catheter mechanism are each provided with a nano-coating mechanism, and each nano-coating mechanism comprises a copper nano-particle coating and a black phosphorus nano-coating. By arranging the spiral flow inducer, blood pressure is rotated, the wall surface shear stress of the inner wall of an artery cavity is improved, the risk of thrombus generation is reduced, wall suction is effectively prevented by arranging the vein side hole and the artery side hole, and the thrombus generation risk is reduced. Through cooperation of the copper nanoparticle coating, the black phosphorus nano coating and the graphene oxide coating, the coating has multiple antibacterial mechanisms such as contact sterilization, ion interference, oxidative stress induction and the like.