145 results about "Particle suspension" patented technology

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.

The invention belongs to the technical field of agricultural nanoparticle preparations, and relates to a dopamine nanoparticle for relieving plant salt stress and a preparation method thereof. And adding the double-ligand chelated dopamine solution into the lignin-based nano-particle suspension, and stirring to obtain the lignin-based nano-particle suspension. According to the invention, metal ions are adopted as a connecting bridge and are respectively chelated with dopamine and ethylenediamine tetraacetic acid salt, so that double-ligand chelated dopamine is obtained, and the self-polymerization behavior of dopamine is inhibited. The invention also provides a method for loading dopamine by using lignin-based nanoparticles. The self-polymerization of the dopamine is further inhibited; the adsorption of the soil on the dopamine is reduced, and the utilization rate of the dopamine is improved.

The invention discloses a preparation method of a long-acting interface lubricating coating, which comprises the following steps: (1) adding 5-7 parts by mass of nano sol, 4-6 parts by mass of micron porous powder, 1.0-1.2 parts by mass of low surface energy substance and 4-6 parts by mass of ammonia water into 80-120 parts by mass of ethanol, and stirring under a water bath heating condition to obtain a modified micron particle suspension, the suspension liquid is dried into powder at high temperature, and modified porous powder is obtained; (2) fully mixing 0.8-1.2 parts by mass of the modified porous powder and 3-5 parts by mass of silicone oil, putting the mixture into a vacuum pump to vacuumize so that the silicone oil can enter the modified porous powder, and after the vacuum state is removed, separating redundant silicone oil to obtain porous powder containing silicone oil; (3) carrying out hole sealing treatment on the porous powder containing the silicone oil, drying at a high temperature, and then mixing with the silicone oil to obtain a mixed solution of the hole sealing powder and the silicone oil; and (4) firstly adding 2.5-4 parts by mass of resin into 2-5 parts by mass of a diluent, then adding 0.5-0.6 part by mass of a silane coupling agent, then adding 0.5-0.8 part by mass of the mixed solution obtained in the step (3), finally adding 0.75-1.2 parts by mass of a curing agent, uniformly mixing, brushing or spraying onto a substrate, and airing to obtain the interface lubricating coating.

The invention relates to the technical field of geological exploration, in particular to a deep water ultra-shallow natural gas reservoir rock physical shear wave velocity prediction method, which comprises the following steps: calculating the equivalent bulk modulus, shear modulus and density of a mixed matrix of various minerals according to the shale content; calculating the bulk modulus and the shear modulus of the skeleton; calculating the bulk modulus and the shear modulus of the saturated rock through the model, and calculating the density of the saturated rock through the density of the rock matrix; distributing longitudinal and transverse velocities in a suspension state and a bearing state, and calculating equivalent longitudinal and transverse wave velocities; taking the longitudinal wave velocity as a known condition, and constructing an inversion objective function by using the equivalent longitudinal wave velocity; comparing the actual longitudinal wave speed with the calculated longitudinal wave speed; and realizing nonlinear inversion of the shear wave velocity according to an algorithm, and obtaining the shear wave velocity of the work area to be inverted. According to the method, rock physical models in a particle suspension state and a bearing state are considered at the same time, and shear wave velocity prediction and direct inversion of the shear wave velocity of the deepwater ultra-shallow natural gas reservoir are realized.

The invention belongs to the technical field of biological medicine, and discloses a bionic nano-particle suspension formulation based on orthoester compounds and a preparation method of the bionic nano-particle suspension formulation. The bionic nanoparticle suspension formulation comprises a liquid auxiliary material, a photosensitizer and bionic nanoparticles, wherein the photosensitizer and the bionic nanoparticles are dispersed in the liquid auxiliary material. According to the present invention, an orthoester compound represented by a formula I is adopted as a liquid auxiliary material, bionic nanoparticles and a photosensitizer are simultaneously introduced into OE to obtain the bionic nanoparticle suspension formulation having multiple antitumor mechanisms, the bionic nanoparticles are cancer cell membrane vesicle-coated nano-drugs, and the cancer cell membrane vesicle-coated nano-drugs can be prepared through a cancer cell membrane biomimetic technology, such that the cancer cell membrane vesicle-coated nano-drugs can be prepared into the bionic nanoparticle suspension formulation having multiple antitumor mechanisms; the homologous targeting function provided by the cancer cell membrane is utilized, and the active targeting property and cellular uptake of the nano-drug are remarkably improved. Formula I: # imgabs0 #

In some aspects, the present disclosure pertains to a method of forming radiopaque crosslinked hydrogel particles comprising (a) mixing a reactive multi-arm polymer comprising a plurality of cyclic imide ester groups, a reactive multifunctional compound comprising a plurality of amino groups, and a radiocontrast agent under conditions in which a pH environment surrounding the reactive multi-arm polymer, the reactive multifunctional compound and the radiocontrast agent increases from an acidic pH to a basic pH, thereby forming a radiopaque hydrogel and (b) subjecting the hydrogel to a particle size reduction process, thereby forming the radiopaque crosslinked hydrogel particles. Other aspects of the present disclosure pertain to radiopaque crosslinked hydrogel particles formed from such methods, suspensions of such radiopaque crosslinked hydrogel particles, and medical supplies that contain such radiopaque crosslinked hydrogel particles.

The invention provides a preparation method of silver-coated copper powder, and belongs to the technical field of metal powder treatment. The used copper particle suspension contains a complexing agent, so that the activity of the copper particles can be reduced, the reaction rate of reduction coating can be reduced when a silver-ammonia complexing solution is added, and a compact silver layer slowly and uniformly grows on the surface of each copper particle; the reduction of the activity of the copper particles slows down the replacement reaction of silver ions and copper, and the situation that the coating surface is rough and loose due to the generation of overlarge silver particles is avoided; the silver grows slowly and compactly, so that the surface of the coated silver layer is smooth and compact on the basis of lower usage amount of the silver source; the preparation method is simple in process, low in silver content and low in production cost, and the coated silver layer is smooth and compact in surface.

The invention relates to a preparation method of a water-in-water nanocellulose Pickering emulsion with uniform and controllable size, which comprises the following steps: S1, preparing an aqueous two-phase system, and respectively preparing a water-based continuous phase and a dispersed phase of a water-soluble polymer with compatible type, concentration and molecular weight; s2, preparing an aqueous continuous phase suspension containing 5%-8% of cellulose nanocrystal (CNC) particles; s3, assembling a micro-channel device which comprises a two-water-phase two-channel angle-designable feeding pipe, a length-dependent composite pipe for regulating and controlling the size of a dispersed phase, a lead-in pipe for introducing the particle suspension and the composite pipe according to a set angle, and a spiral pipe for forcibly assembling and optimizing particles on a two-phase interface and adaptively regulating and controlling the length / screw pitch / diameter; s4, preparing a water-in-water emulsion with stable CNC particles; according to the method, two-water-phase compounding and particle interface assembling are strengthened through micro-channel design, the flow speed and the air pressure interruption time are regulated and controlled, accurate control over the emulsion size and the droplet distance is achieved, and the common problems that the emulsion size is not uniform and the particle coverage degree is not high are solved.

The invention discloses a micron particle monodispersion device which is characterized in that a focusing flow channel is internally provided with a chamber and an ejection hole, and the ejection hole is communicated with the chamber and the external environment; the inner diameter of a core capillary tube of the liquid flow introduction module is far larger than the particle size of the micron particles, the outlet end of the core capillary tube extends into the cavity and is close to the ejection hole in an opposite mode, and the core capillary tube is used for conveying micron particle suspension liquid; the airflow introduction module is connected with the focusing flow channel and used for introducing high-pressure gas into the cavity, so that pressure difference is formed between the cavity and the external environment, and then micron particle suspension flowing out of the outlet end of the core capillary tube is pulled into superfine liquid jet flow under the wrapping and extruding action of coaxial sheath gas flow at the ejection hole; and the liquid drops are automatically crushed into liquid drops of monodisperse particles outside the focused flow channel. The device is not easy to block, high in micron particle monodispersion efficiency and high in flux, and can be compatible with an organic mass spectrum, a spectrum analyzer and the like.

The invention discloses a soil particle directional deposition sample preparation method based on magnetic / electric field regulation and control, which comprises the following steps: mixing soil particles with a functional medium which is a magnetic nanoparticle dispersion liquid or a charged surfactant solution; enabling the surfaces of the soil particles to adsorb a functional medium through ultrasound or stirring to form temporarily magnetized or charged modified particles; injecting the modified particle suspension into a deposition tank, applying a magnetic field or an electric field, and regulating the long axis direction of the modified particles to a target angle; capturing a particle deposition image in real time through a monitoring system, processing the particle deposition image and calculating a particle deposition direction by utilizing an intelligent image analysis module, and feeding back and adjusting parameters of a magnetic field or an electric field according to a processing result of the intelligent image analysis module; and after deposition is completed, removing the external field to obtain the sample with the controllable deposition angle. The method can be used for accurately preparing soil particle directional deposition samples with different deposition angles, and is simple and convenient to operate and good in repeatability.

The application provides a low-crystallinity hydroxyapatite microsphere for implantation and a preparation method thereof, and the preparation method comprises the following steps: preparing a mixed solution of a calcium source reagent and a phosphorus source reagent, adding inorganic acid, alkali and a buffer into the mixed solution, adding a surfactant, and obtaining a hydroxyapatite micro-particle precipitate through constant-temperature reaction; cleaning the hydroxyapatite micro-particle precipitate, and preparing a hydroxyapatite micro-particle suspension by adding water; and performing spray drying on the hydroxyapatite micro-particle suspension to obtain the hydroxyapatite microsphere; wherein the surfactant is one or more of PEG and PVP. The hydroxyapatite microsphere obtained by the application has stable structure, belongs to spherical large particles, is easy to inject, and is not prone to agglomeration; when the hydroxyapatite microsphere is injected into a human body, the hydroxyapatite microsphere has good supporting effect; and the preparation method of the application is simple, has few process steps, and is easy to realize reaction conditions, and is suitable for large-scale production.

A hydrocolloid particle suspension comprises a concentration of at least 0.5 g / 100 g of hydrocolloid particles, and a stabilizing additive containing at least one polyoxyalkylene moiety of 3 to 150 consecutive oxyalkylene units, wherein the at least one polyoxyalkylene moiety comprises at least 25 wt.-% of oxyethylene moieties, based on the total oxyalkylene moieties comprised in the stabilizing additive. The suspension contains less than 80 wt.-% of water and is useful as rheological modifier for cementitious applications. In the hydrocolloid particle suspension, the hydrocolloid particles are stabilized against premature swelling. The suspension exhibits adequate viscosity for ease of handling and dosage and is shelf-stable.

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

The invention discloses a method for measuring the molar concentration of nano-particles. The method comprises the following steps: diluting a nano-particle suspension with a high-molecular polymer solution or dispersing nano-particle powder into the high-molecular polymer solution; transferring the suspension liquid to a spacing net on the side of a sample pool in an electrophoresis tank; nano-particles migrate from the sample pool to the buffer pool under the driving of the electric field and are uniformly distributed on the spacing net in a single-particle manner; performing single-particle imaging on the spacing net by using an optical microscope; and counting the number of the nanoparticles in the image so as to measure the molar concentration of the nanoparticles in the sample. The method can be used under the condition that the properties of the nanoparticles are unknown or no standard substance exists, the detection object has no additional condition, and the accuracy is high.

In an example, a deoxyribonucleic acid (DNA) sample is introduced to a flow cell including depressions and first and second transposome complexes immobilized within the depressions, whereby tagmentation generates respective DNA sample fragments in at least some depressions. The first and second transposome complexes respectively include first and second amplification domains. A pre-grafted particle suspension is introduced into the flow cell, whereby at least some pre-grafted particles respectively attach within a plurality of the at least some depressions. The suspension includes a liquid carrier and pre-grafted particles, which include first and second primers attached to a core. The first and second primers have a same sequence, respectively, as the first and second amplification domains. Amplification is initiated such that, within each of the plurality of the at least some depressions, the respective DNA sample fragments are amplified on a respective one of the at least some pre-grafted particles.

The invention discloses a particle suspension type slurry single fracture visual grouting experiment method. A particle suspension type slurry single-fracture visual grouting experiment system is used; the particle suspension type slurry single-fracture visual grouting experiment system is characterized in that the particle suspension type slurry single-fracture visual grouting experiment system comprises an experiment table, and a grouting valve and a drainage valve are arranged at the two ends of the experiment table respectively; a plurality of pneumatic joints are horizontally arranged on the surface of the experiment table in the slurry flowing direction; the grouting module comprises a liquid storage tank and an injection pump; the liquid storage tank is communicated with the injection pump; the injection pump is communicated with the grouting valve, and a pneumatic connector is arranged in the middle of the grouting pipe. The recycling module comprises a water storage bin; the water storage bin is communicated with the drain valve; the observation range of the high-speed camera covers the experiment table; a recorder; a data transmission bus; the pneumatic connector and the recorder are electrically connected to the data transmission bus; the pneumatic connector performs signal transmission through the pressure signal conversion assembly; therefore, by constructing the grouting simulation experiment system, the seepage condition of the actual grouting slurry is simulated.

The invention discloses reinforced recycled aggregate cement concrete based on long-acting carbon sequestration and a preparation method thereof. The cement concrete is prepared from the following substances in percentage by weight: 45 to 50 percent of recycled aggregate component, 2 to 5 percent of activated carbon trapping agent, 1 to 2 percent of microencapsulation material, 24 to 28 percent of river sand, 0.8 to 1.2 percent of water reducing agent, 15 to 18 percent of cement, 1.2 to 4.8 percent of auxiliary admixture and 6 to 9 percent of water. The preparation method comprises the following steps: preparing a recycled aggregate component, an activated carbon trapping agent, a microencapsulated material and microcapsule particles; the preparation method comprises the following steps: uniformly mixing the substances in a mixing pot to obtain the reinforced recycled aggregate cement concrete slurry based on carbon sequestration; a test piece forming mold is filled with the slurry, microcapsule particles are scattered on the upper surface of the slurry, and a test piece is obtained after vibration forming, standing, demolding and curing are conducted; and coating the microcapsule particle suspension on the outer surface of the test piece to obtain the reinforced recycled aggregate cement concrete test piece based on long-acting carbon sequestration. According to the invention, carbon dioxide can be continuously adsorbed and sealed, and the strength and durability of the recycled aggregate can be improved.

The invention belongs to the technical field of biomedical materials, and discloses light-controlled liquefied hydrogel for inhibiting wound scar formation and a preparation method and application thereof.The light-controlled liquefied hydrogel is prepared from 6-18 parts of PVA hydrogel, 3-9 parts of borax boric acid buffer solution and 1-3 parts of PDA (at) CeO2-SAB nano-particle suspension.The hydrogel has the advantages that light-controlled liquefaction can be achieved, and the hydrogel can be applied to wound scar formation. The material has the characteristics of uniform particle size, accurate drug release, inhibition of CD36 expression, good biocompatibility, biodegradability and the like, can be used for infected wounds, and provides a novel, simple and effective material for wound inflammation inhibition and scar repair resistance treatment.

The invention discloses a high-throughput single-particle arranged and packaged micro-fluidic chip and application thereof, and belongs to the field of biomedical engineering. The single-particle arranged micro-fluidic chip comprises a substrate and a slide glass, wherein the substrate is used for supporting the slide glass; a particle suspension liquid inflow port, a sheath liquid inflow port, a periodic focusing flow channel and an outflow port are formed in the slide glass; the particle suspension liquid inlet and the sheath liquid inlet are respectively connected with a micro-channel, and the two micro-channels intersect to form a micro-channel and are communicated with the periodic focusing channel; the included angle of the micro-channel intersection of the particle suspension liquid inlet and the sheath liquid inlet is 30-100 degrees; the periodic focusing flow channel is of a spiral structure from inside to outside; the periodic focusing flow channel is connected with the flow outlet; the micro-fluidic chip provided by the invention integrates droplet arrangement and screening functions, and finally realizes single particle encapsulation.

The invention relates to the field of preparation of modified double-base propellants, in particular to a preparation process of a modified double-base propellant absorbing drug with uniformly dispersed solid components. The preparation process comprises the following steps: putting the dispersing agent into an absorption kettle according to a feeding sequence, then putting a particle suspension prepared from the white material, the RDX, the aluminum powder and the catalyst into the absorption kettle, and heating, stirring and absorbing in a water medium to obtain absorption slurry. On the basis of a traditional double-base propellant stirring absorption process, a dispersing agent is added to help absorption, the sedimentation problem of a catalyst and RDX in a propellant formula is effectively solved through the effects of electrostatic repulsion and steric hindrance, and an absorption drug with uniformly dispersed solid components is obtained.

The invention relates to a method for preparing a food-grade particle emulsifier from rape seed cakes. The method comprises the following steps: (a) treating rapeseeds into rape seed cake powder; (b) dispersing the rape seed cake powder in a NaOH solution, centrifuging, taking precipitate, washing with water, dispersing in an HCl solution, carrying out high-temperature treatment, washing with water, and drying to obtain rape seed cake full-fiber particles; (c) carrying out micro-nano modification on the rape seed cake full-fiber particles by adopting a pure physical technology, and drying to obtain rape seed cake nano-particles; and (d) preparing the rape seed cake nano-particles into a rape seed cake nano-particle suspension with deionized water, mixing the rape seed cake nano-particle suspension with medium-chain fatty acid, and applying shear force to prepare the Pickering emulsion. According to the method, the compact structure of the rape seed cake can be destroyed, more hydrophilic parts in the rape seed cake can be exposed, and meanwhile, the size of the rape seed cake can be reduced to the micro-nano scale, so that the prepared rape seed cake all-fiber nanoparticle emulsion conforms to the characteristics of a Pickering emulsifier, and the problem that the utilization rate of the rape seed cake is low at present is solved.

This invention relates to a particle-polymer aggregate composite oil displacement agent and its application. The oil displacement agent of this invention comprises: (A) a particle suspension containing particles and water, wherein the mass fraction of the particles is 200-2000 ppm; and (B) a polymer solution containing a polymer and water, wherein the mass fraction of the polymer is 0.01-10 ppm, and the polymer is one of the following: (B1), (B2), or (B3): (B1) an ionic polymer, wherein the ionic polymer is a cationic or anionic polymer, wherein the charge of the ionic groups on the polymer molecular chain is opposite to the charge of the particle surface; (B2) a mixture of cationic and anionic polymers; (B3) a naturally aged nonionic polymer. The oil displacement agent of this invention is low in cost, easy to inject, has a high sealing effect, and good oil displacement effect.

The invention discloses a device and method for injecting functional particles on the surface of a material, the device comprises a pulse high-pressure jet device, the pulse high-pressure jet device is connected with a particle mixing and conveying device, and the particle mixing and conveying device provides functional particle suspension for the pulse high-pressure jet device; a nozzle of the pulse high-pressure jet device is positioned above the to-be-modified sample and is separated from the to-be-modified sample by a set distance, and a first ultrasonic vibration device is mounted on the outer wall of the nozzle; the to-be-modified sample is fixed through a moving device, and a second ultrasonic vibration device is mounted on the moving device; functional particle injection is achieved through the cavitation water jet and ultrasonic vibration technology, and efficient modification treatment can be conducted on the metal alloy surface under the room temperature condition. Therefore, material matrix performance change or organization structure damage possibly caused by a traditional high-temperature modification method is avoided, and the original excellent performance of the material is kept.

The invention relates to a solid fuel combustion characteristic test technology, and aims to provide a focusing single particle suspension variable atmosphere ignition combustion experiment device and method. A second microporous plate and a feed hopper are arranged at the top of a combustion chamber main body of the device, and a first microporous plate and a gas buffer cavity are arranged at the bottom; the two laser emitters are arranged in an included angle shape, and the energy of a single laser beam is lower than a fuel particle ignition threshold value; the two paths of laser intersect in the central area of the cavity to form a space energy focus, and the superposed energy of the two beams of laser can be absorbed at the position to reach an ignition threshold value; and light paths of diagnosis equipment in the optical acquisition module are intersected in a focus area. According to the invention, through a strategy of airflow disturbance and microwell plate blocking, particles completely move in airflow; the ignition behavior has spatial selectivity, the success rate is high and controllable, and the research is closer to the actual application scene. Through the design of single-particle fixed-point triggering, the system complexity and the control difficulty can be reduced, and the operation stability and the experiment repeatability can be improved.

The present invention relates to a syringe comprising: a syringe barrel having an open proximal end leading into an interior, the interior having a cylindrical wall and an angled distal surface terminating in an outlet; a plunger rod; and a plunger seal, a proximal end of the plunger seal configured to be attached to a distal end of the plunger rod, and a distal end of the plunger seal configured to be inserted through the open proximal end into the interior of the syringe barrel, the plunger seal forms a seal with the cylindrical wall of the interior of the syringe barrel, and the distal end of the plunger seal terminates at an angled distal surface, wherein the angled distal surface of the syringe barrel is sharper than the angled distal surface of the plunger seal. The invention also relates to a kit comprising such a syringe.

The application provides a preparation method of a porous material loaded with mixed microorganisms, comprising the following steps: S1, preparation of a mixed bacteria suspension; S2, preparation of an activated sludge porous material; and S3, preparation of a porous material loaded with mixed microorganisms. The application also provides a preparation method of an oil-wetting and water-repellent activated sludge porous material loaded with microorganisms, which comprises spraying a hydrophobic silica particle suspension on the porous material loaded with mixed microorganisms to obtain a modified material which is oil-wetting and water-repellent. The porous material loaded with mixed microorganisms and the oil-wetting and water-repellent activated sludge porous material loaded with microorganisms can effectively degrade medium and long chain alkanes in oil, especially n-hexadecane.

The invention belongs to the field of nano-films, and particularly relates to a preparation method and application of a high-stability super-hydrophobic SiO2 antireflection film, and the preparation method comprises the following steps: obtaining a hollow SiO2 nano-particle suspension, modifying and dispersing a ZSM-5 molecular sieve, preparing composite sol, etching and modifying, and preparing, coating and modifying the sol with low surface energy. According to the invention, the design of a molecular sieve in-situ embedded composite structure is used for reference, and a hollow SiO2 modification process is combined, so that the synergistic improvement of the anti-reflection performance, the super-hydrophobic performance and the structural stability is realized.

The invention provides a laser projection observation device, and relates to the technical field of suspended particle projection. A laser beam emitted by a laser device is combined with a particle suspension technology realized by a suspension device, and an amplification module is introduced to amplify particle scattered light to form a dynamic real-time image on a projection curtain, so that the problem that in the prior art, no lossless and non-contact in-situ real-time observation on suspended particles is available is solved; the objective of providing a clear, large-size and real-time dynamic observation effect is achieved.

The invention relates to the technical field of biological materials, and discloses a preparation method of a gallium-copper alloy modified super-hydrophobic SEBS (styrene-ethylene-butylene-styrene) membrane, which comprises the following specific steps: step 1, preparing a super-hydrophobic SEBS membrane; 2, liquid metal is added into a dispersing agent, ultrasonic treatment is carried out, and gallium particle suspension liquid is obtained; soaking the super-hydrophobic SEBS membrane in the gallium particle suspension, and drying the super-hydrophobic SEBS membrane to obtain a gallium coating modified SEBS membrane; the liquid metal is any one of gallium, gallium-indium alloy or gallium-indium-tin alloy; and step 3, soaking the SEBS membrane modified by the gallium coating in a copper ion solution, taking out the SEBS membrane, cleaning, and drying to obtain the super-hydrophobic SEBS membrane modified by the gallium-copper alloy. According to the invention, liquid metal (GaLM) particles are used as a copper carrier, and the gallium-copper alloy is modified on the super-hydrophobic SEBS film, so that the film is endowed with a stable structure, has dual functions of efficiently sterilizing and inhibiting bacterial adhesion, and has a relatively wide application prospect.

The invention discloses microstructure preparation equipment and a microstructure preparation method. The microstructure preparation method comprises the following steps: providing a container filled with a particle suspension and a base material with a hydrophilic interface; placing the provided substrate at least partially in the particle suspension in the container; and evaporating the particle suspension in the container to deposit suspended particles in the particle suspension on the hydrophilic interface of the substrate so as to form a target microstructure on the surface of the substrate. In one embodiment, at least a portion of a substrate having a hydrophilic interface is placed into a particle suspension in a container by preparing the particle suspension. Then, the particle suspension liquid in the container is evaporated, so that the needed target microstructure is generated on the hydrophilic interface of the base material, and the deposition time can be adjusted to control the height of the deposited microstructure. Therefore, by adopting the manufacturing method for the target microstructure, the production process of the target microstructure is relatively simple, and the cost is low.