108 results about "Surface tension" patented technology

A boron-containing polyethylene glycol fatty acid ester surfactant belongs to the field of organic chemistry and functional materials. The boron-containing polyethylene glycol fatty acid ester surfactant is prepared as follows: polyethylene glycol (PEG), boric acid and fatty acid are used as raw materials, first esterification reaction of the PEG and the boric acid is performed, then esterification reaction of the PEG and the fatty acid is performed to obtain boron-containing poly ethylene glycol fatty acid ester; by changing the species of fatty acids and catalysts and molecular weight of the PEG, the esterification rate can be enhanced, the boron-containing poly ethylene glycol fatty acid ester product can be used as a surfactant, and the boron-containing poly ethylene glycol fatty acid ester can reduce water surface tension and has good emulsifying properties.

The invention discloses a membrane switch performance detection device, and belongs to the field of switch testing, the membrane switch performance detection device comprises a container, a containing cavity formed in the container, a top plate located above the container, and height adjusting assemblies fixedly connected to the two sides of the container and used for driving the top plate to ascend and descend, and heating parts are fixedly connected to the side wall and the bottom wall of the containing cavity; a sensor is fixedly connected to the side wall of the accommodating cavity; the upper end of the top plate is connected with an immersion detection assembly, and the immersion detection assembly comprises a support fixedly connected to the upper end of the top plate, a lead screw with one end rotationally connected with the inner wall of the support and the other end rotationally connected with the upper end of the top plate, and a first motor fixedly connected to the upper end of the support, and an output shaft of the first motor is fixedly connected with one end of the lead screw. According to the scheme, the heating part is arranged in the container to heat the water body in the accommodating cavity, so that the surface tension of the water body is changed, the stress of the sealing element and the water leakage probability of the micro-channel can be changed, a sample is subjected to immersion test in the water body at different temperatures, reliability verification closer to complex working conditions is realized, and customized authentication requirements are met.

The utility model relates to a cooking device. The cooking equipment comprises an inner container and a humidifying assembly. The inner container is provided with a cooking cavity; the humidifying assembly comprises an atomizing nozzle, the atomizing nozzle is connected to the inner container, and the atomizing nozzle is arranged towards the interior of the cooking cavity and sprays water mist. According to the cooking equipment provided in the scheme, the atomizing nozzle connected to the inner container is arranged, the water mist is sprayed towards the interior of the cooking cavity through the atomizing nozzle, and the characteristic that the water mist can become water vapor more quickly compared with water flow is utilized, so that a better humidifying and baking effect is achieved; the characteristic that water mist is composed of fine liquid drops and has a large surface area is utilized, the characteristics that the water mist flows at a high speed and is large in surface tension and not prone to adhesion are combined, the water mist is rapidly evaporated into water vapor, the concentration of mineral substances in the water is reduced, the mineral substances dissolved in the water are prevented from being deposited and crystallized on the surface of the inner container, and the service life of the inner container is prolonged. Therefore, the problem that scale is easy to form during humidifying and baking is prevented.

The invention discloses a tight sandstone reservoir water-containing gas well water block removing agent and a preparation method and application, belongs to the technical field of gas reservoir development, and is characterized in that the water block removing agent comprises the following components in parts by weight: 20-35 parts of an ampholytic surfactant, 0.3-0.5 part of a fluorocarbon surfactant, 5-10 parts of a wetting agent, 5-10 parts of a solvent and 30-45 parts of water. The prepared water block removing agent is easy to biodegrade and low in surface tension and interfacial tension, the wettability of a rock core can be gradually changed from hydrophilic to hydrophobic, the rock wettability is effectively changed, the interfacial tension between fluid and reservoir rock is reduced, the permeability of the rock core is improved, and then the single-well recovery efficiency of a tight sandstone gas reservoir water-containing gas well is improved.

The present application relates to heat exchange medium energy-saving additive technical field, specifically for a kind of energy-saving additive for heat exchange system and its preparation method and application, the energy-saving additive includes following weight parts component: main surfactant: 2-20 parts;Scale inhibitor: 0-30 parts;Coupling agent: 0-30 parts;Regulator: 0-30 parts;Surface tension control agent: 0-20 parts;Auxiliary surfactant: 0-10 parts;Dispersing agent: 20-30 parts;Defoaming agent: 0-10 parts.By the scientific compounding and synergistic effect of main surfactant and other surface active components, the surface tension of water-based heat exchange medium can be significantly reduced to a very low level of 27.68mN / m.Greatly improve the wettability and spreadability of medium in the inner wall of heat exchanger, so that it can quickly cover the heat exchange surface to form a uniform thin liquid film, effectively eliminate or thin the liquid film thermal resistance that hinders heat transfer.

The invention relates to a heavy hammer for hydrographic survey, and belongs to the technical field of hydrographic survey instruments. The design of the heavy hammer is based on taking a volume V, a material density rho and a shape parameter as core decision variables and taking a minimum mass m as a target function; the optimal mathematical model meets the requirements of a water surface tension change threshold value delta T1 caused by buoyancy, a water bottom tension change threshold value delta T2 caused by water bottom support, a terminal sinking speed threshold value vmin, the maximum mass gamma < = 0.5 kg and the maximum boundary dimension constraint. The heavy hammer is spherical, drop-shaped or torpedo-shaped, specific volume, density and mass parameters are obtained through optimization calculation, and high-tension detection sensitivity and rapid sinking efficiency are achieved while portability is ensured. Preferably, the heavy hammer is of a separable assembly type structure, and a containing cavity and a counterweight metal block are arranged in the heavy hammer so as to adjust the density and the mass. According to the system, the problem of contradiction between performance indexes in heavy hammer design is solved, and the comprehensive measurement performance is remarkably improved.

The invention discloses a distribution box with moisture-proof and dehumidification functions and a use method thereof, and relates to the technical field of distribution boxes, the distribution box comprises a box body, box doors are hinged to the two sides of the front surface of the box body respectively, a dustproof net is arranged to intercept dust, and the dust is prevented from entering the box body to be attached to the surface of an electrical component body to affect heat dissipation; by arranging the waterproof breathable film, water particles are very fine in a water vapor state and can smoothly permeate to the other side of a capillary tube according to a capillary motion principle, so that a vapor permeation phenomenon occurs, after water vapor is condensed into water drops, the particles become large, and water molecules cannot be smoothly separated from the water drops and permeate to the other side due to the action of surface tension of the water drops; therefore, water permeation is prevented, and the waterproof function is achieved.

The application discloses a kind of wet and hot marine environment under power transmission equipment surface condensation amount calculation method and device, it is related to power transmission equipment humidity management technical field, wherein method includes: obtaining the temperature and relative humidity parameters of the environment where target power transmission equipment is located, into salt moisture dissociation corrected condensation generation condition criterion, whether to meet condensation generation condition is judged, not meet then terminate calculation, meet then enter subsequent process;Based on salt moisture dissociation effect, through the surface tension of salt solution and equivalent curvature radius double correction, construct condensation amount calculation equation, enter environmental parameter and obtain the condensation amount of moisture dissociation correction after solution;Combining the salt density deposition amount and contact angle change caused by wet and hot marine environment dry-wet alternation, based on the salt space redistribution characteristics complete salt density dynamic correction, into parameter calculation dry-wet cycle condensation amount, realize the quantification of equipment surface condensation amount.The application realizes the accurate calculation of condensation amount, while guaranteeing long-term service of marine power transmission equipment.

The invention relates to the technical field of water quality detection, and discloses a water quality detection sampler for a sewage treatment plant and a sampling method. Comprising an overall external mechanism, an overall top plate is fixedly connected to the outer wall of the top of the overall external mechanism, purified water and a polluted water source are different in surface tension, the height of an internal detection water source is controlled, and when the water source is detected, if the height difference value between an external detection plate and an internal detection plate exceeds a normal value, the water source is listed as the polluted water source; when internal water flow scours, internal air is extruded by the water flow to diffuse outwards, an air pressure cooling mechanism is arranged at the top, when the air is extruded by force and passes through an air collection pipeline, the air passes through small holes from large holes, the air pressure intensity and density are increased, the air speed is increased, and the slow cooling effect is achieved; the water drop condensation plate is installed outside the device, the water drops are effectively collected and discharged, and the problems of moss growth, corrosion, rusting and the like are avoided.

The present application belongs to the technical field of aerosol measurement, and particularly relates to a method and system for measuring the surface tension of cloud droplets in the process of aerosol activation into clouds. The method comprises: building a system for measuring the surface tension of cloud droplets, including a cloud condensation nucleus counter, electrode plates, a high-voltage power supply, a condensation nucleus particle counter, and a differential mobility analyzer; applying a high-voltage electric field to cause positive and negative ions in the droplets to split under the traction of the electric field; aerosol samples are converted into droplets by absorbing water vapor in a cloud chamber, and the droplets split under the traction of the high-voltage electric field; the number concentration of the droplets in the outflow sample is measured by the condensation nucleus particle counter; the critical voltage at which the droplets split is obtained by fitting the graph of the number concentration of the droplets versus the voltage intensity; and the surface tension of the droplets is calculated according to the quantitative relationship between the critical voltage and the surface tension of the droplets. The present application can be used in atmospheric chemical transport simulation and climate models to evaluate the influence of the surface tension of cloud droplets on the number concentration and particle size of the cloud droplets.

The invention relates to the field of microsphere preparation, in particular to a method and device for preparing monodisperse microspheres with high yield, and the method comprises the following steps: spraying a liquid material in a hot melting state into water or incompatible liquid with a considerable specific gravity through a spraying valve micro-channel at the frequency of 500-1500 times per second by adopting a hot melt glue spraying valve; in the spraying process, the hot melt material moves in the spraying valve along a preset track path, each drop of liquid particles suspend in water with the same specific gravity or liquid incompatible with the material and is independent of one another, the liquid particles are not mutually adhered, and in the water with the same specific gravity or the liquid incompatible with the material, the material liquid drops are solidified under proper conditions, so that the liquid particles are not adhered to one another. Due to the fact that the volume of the material liquid ejected by the ejection valve is basically consistent, in the suspension liquid, the surface tension of material molecules enables the material to be solidified to form a true spherical shape, and the volume and mass errors of each spherical material are very small, so that the particle size distribution of the formed microspheres presents monodispersity.

The invention belongs to the technical field of grouting simulation, and particularly discloses a deformation porous medium splitting grouting simulation method and system.The method comprises the steps that a three-dimensional geometric model of a porous medium in an area to be simulated is built, a computational domain is determined, and the computational domain is divided into a plurality of non-overlapped unit grids; establishing a multiphase system control equation, and carrying out numerical updating on relative permeability, density, viscosity and surface tension; on the basis of the updated parameters, fluid velocity field calculation is conducted through a fluid control equation of the pure fluid area; calculating transmission time based on the obtained fluid velocity, and updating a slurry viscosity field through a slurry viscosity space-time tracking model; and the solid speed and mass are updated based on the solid mass and momentum conservation equation, and the grouting simulation process is completed. According to the method, the permeability change of the porous medium and the dynamic coupling effect of the stress state are comprehensively considered, and a scientific basis is provided for grouting design and optimization under complex working conditions in engineering.

The invention discloses a biological method for improving geological storage of CO2. The biological method comprises the following steps: injecting surfactant-producing microorganisms and CO2 into a geological reservoir; the geological reservoir is used for storing CO2, is a geological space containing formation water, and comprises at least one of a saline water layer and a depleted or abandoned oil and gas reservoir; the surfactant producing microorganisms metabolize to produce a biological surfactant; the biological surfactant is used for reducing the surface tension of formation water and promoting CO2 to be dissolved in the formation water, so that the injected CO2 is sealed in a dissolved state. According to the method disclosed by the invention, the gas-liquid surface tension is reduced and CO2 is promoted to be dispersed into a water phase by utilizing a surface active substance generated by metabolism of surfactant-producing bacteria, so that the dissolution and sealing efficiency of CO2 in a saline water layer is improved. In view of huge carbon emission reduction pressure faced by the industries of cement, steel, petrifaction and the like in China, the technology has a wide application prospect.

This invention relates to an optimization method for an organic, environmentally friendly water-based fire extinguishing agent, belonging to the field of intelligent optimization technology for fire extinguishing agent formulations. The method parametrically models the fire extinguishing agent formulation and preparation process to construct a joint feasible domain; it establishes a comprehensive performance function including extinguishing time, cooling capacity, smoke suppression index, and reignition probability, and simultaneously constructs a function including TOC, COD, and EC. 50 An environmental risk function is derived based on VOC, organic fluorine content, and bio-based proportion, with environmental thresholds as constraints. Mechanism consistency constraints such as surface tension, viscosity window, and lower bound of cooling capacity are introduced. Through worst-case robust optimization and an active sampling closed-loop update mechanism, stable performance optimization under low-temperature and brine environments is achieved. This method can obtain optimal fire extinguishing agent formulations and process parameters that combine environmental compliance, smoke suppression and reignition resistance, and multi-condition adaptability, while meeting the requirements of fluorine-free and high bio-based proportions.

The present invention relates to the field of air tightness testing, and in particular to a gearbox air tightness testing device, comprising a base, an isolation barrel, a top cover, and a first air pipe; the base is fixedly connected to an isolation barrel, and the isolation barrel is provided with a plurality of observation windows for observing the condition of the gearbox; the isolation barrel is mounted with a top cover, and the top cover is penetrated by a first air pipe, and the first air pipe is a hose. The present invention is in a closed state for a long time due to the base, the isolation barrel, and the top cover, and the amount of dust inside is relatively small, that is, during the process of spraying soapy water, a large amount of dust will not be attached to the gearbox. It should be noted that soapy water has a low surface tension and is easy to form bubbles. However, dust particles will adhere to the liquid surface, interfering with the uniform distribution of surface tension, making it difficult for bubbles to form stably. That is, the mixing of dust particles and soapy water will affect the formation of bubbles, thereby affecting the subsequent judgment of leaks through bubbles.

The utility model discloses a full-automatic wafer groove type cleaning machine sealing and pressurizing cleaning groove which comprises a tool body and an installation base arranged on the lower side of the middle of the tool body, a silicon electrode body is arranged on the inner side of the middle of the installation base, and a plurality of tool clamps are arranged on the outer portion of the upper side of the installation base. An upper spraying pipe and a lower spraying pipe are arranged at the left end and the right end of the upper side of the tool body correspondingly, direct cleaning of the lower side of the silicon electrode body is achieved, the tool body and the upper spraying pipe act together, turning over is not needed, the cleaning efficiency is greatly improved, meanwhile, the comprehensiveness of cleaning is guaranteed, and the working efficiency is improved. The low-efficiency process that manual overturning is needed after traditional single-face cleaning is avoided, high-pressure water flow is sprayed out through the spraying heads connected with the upper spraying pipe and the lower spraying pipe, the surface tension of water drops can be effectively overcome, the water drops directly permeate into tiny gaps of a silicon electrode body, the problem that deep cleaning cannot be conducted due to the influence of the tension of the water drops is solved, and the cleaning efficiency is improved. And the depth and thoroughness of cleaning are ensured.

The invention provides a shale organic matter wettability evaluation method and device. The shale organic matter wettability evaluation method comprises the following steps: measuring contact angles of at least three test media on the surface of a target shale; generating surface free energy, surface tension and surface tension components of the target shale according to the contact angles corresponding to the at least three test media; measuring the mineral component content and the organic matter content of the target shale; and evaluating the organic matter wettability of the target shale according to the surface free energy, the surface tension, the surface tension component, the mineral component content and the organic matter content. The method can accurately evaluate the wettability of the shale organic matter, does not damage the pore structure of the shale, can be used for multiple times, and has no requirements on the shape and size of the shale. Therefore, a theoretical basis is provided for analyzing imbibition and flowback of the fracturing fluid in shale.

1. Name of the product in this design: Critical Point Dryer (Vertical). 2. Purpose of this design: To eliminate liquid surface tension and prevent samples from collapsing, deforming, shrinking, or structurally damaged during drying. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model provides a sidewalk interlocking block which comprises a body, and a plurality of supporting structures abut against the edge of the side surface of the body. A plurality of drainage pipelines are arranged in the body; the supporting structure comprises a partition plate, and the partition plate abuts against the side surface of the body. The partition plate and the body are provided with a water retaining structure which is communicated with the bottom of the body and the surface of the body; the water retaining structure comprises a plurality of concave surfaces and convex surfaces which are communicated with one another; a plurality of positioning cones are arranged at the bottom of the body, and each drainage pipeline penetrates through the body and the positioning cones. The side edge of the interlocking block is designed into a concave surface and convex surface structure, so that accumulated water flows along the contacted surface structure due to the surface tension effect of liquid when being ejected from bottom to top, and certain kinetic energy is consumed by the accumulated water before the accumulated water is ejected out due to the effect of the concave surface and the convex surface; and accumulated water on the surface of the interlocking block can be quickly emptied through a one-way drainage pipeline.

The invention relates to a concentration determination method and a concentration determination device, which are suitable for various different shapes of liquid to be detected and can accurately determine the concentration of a component to be detected. The concentration determination method is used for determining the concentration of a to-be-detected component in a to-be-detected liquid, and comprises the following steps: an excitation step: irradiating exciting light towards the to-be-detected liquid, keeping the to-be-detected liquid in a keeping unit through surface tension, enabling the exciting light to pass through a part of the to-be-detected liquid and then reach a light collection area of a to-be-detected area, after leaving the light collection area, the liquid passes through the other part of the liquid to be detected and leaves the liquid to be detected, and the light collection area is an area for collecting elastic scattered light and inelastic scattered light generated by irradiation in the liquid to be detected; a collection and detection step of collecting and detecting elastic scattered light and inelastic scattered light generated by irradiation of the light collection region; and a concentration determination step: determining the concentration of the component to be detected according to the collected elastic scattered light and inelastic scattered light.

This application relates to the field of leveling process technology, and discloses a high-cleanliness lubricating leveling fluid for continuous annealing lines and its preparation method. The high-cleanliness lubricating leveling fluid for continuous annealing lines comprises the following components by mass percentage: rust inhibitor 21%-30%, lubricant 2-3%, pH adjuster 2-5%, cleaning agent 3-5%, and water as the balance. The high-cleanliness lubricating leveling fluid provided in this application optimizes the cleanliness of the leveling fluid by combining cationic and nonionic surfactants to produce an additive synergistic effect, significantly reducing the surface tension of the leveling fluid and optimizing the dispersibility of iron powder. This is beneficial in application for improving the surface cleanliness of strip steel (reducing residual iron), maintaining the cleanliness of the rolling mill stand, solving the problem of most leveling fluids on the market easily clogging nozzles and roll holes, and enabling its widespread application in continuous annealing production lines.

The present invention provides a heat exchange tube, a heat exchanger, a chiller and a processing method, relating to the technical field of heat exchangers, aiming to provide a new structure of the heat exchange tube, which has the function of promoting the rapid drainage of the condensate film. The heat exchange tube includes a tube body and fins arranged on the tube body. A flow channel is formed between two adjacent fins. The fins include more than two guiding structures, and each guiding structure is sequentially and spaced apart along the circumferential direction of the fin on the fin. The heat exchange tube provided by the present invention can pierce the liquid film and utilize the change of the surface tension of the liquid film to make the condensed liquid flow downward.

The invention discloses a preparation method of an intelligent liquid two-way transportation surface based on cooperation of an Aucaria cunninghamii structure and pH response. The method comprises the following steps: step 1, designing, optimizing and semi-curing printing of an Aucaria cunninghamii structure imitating model; step 2, preparing a pH response particle modification solution; step 3, swelling modification and post-curing of the semi-cured model; and step 4, drying and post-processing. According to the method, pH response particles are introduced into an Aucaria cunnata bionic structure, the surface can intelligently switch the transportation direction of high-surface tension liquid according to the pH value of the liquid, reversible switching of the transportation direction is achieved, and the limitation of unidirectional and irreversible transportation of a traditional surface is broken through; the pH response particles are firmly anchored on the surfaces of the three-dimensional double-curvature ratchets through a semi-curing-swelling-post-curing process, and the dynamic response capability to the chemical environment is given to the three-dimensional double-curvature ratchets while the inherent capillary driving characteristic of the structure is reserved.

The invention discloses an interface wetting regulator for tight gas reservoir water control fracturing and a preparation method of the interface wetting regulator. The preparation method comprises the following steps: S100, carrying out acidolysis on cellulose; s200, carrying out a hydrothermal reaction on the cellulose acidolysis product and a Gemini surfactant; and S300, compounding a quaternary ammonium salt cationic surfactant with a product obtained in the step S200 to obtain the interface wetting regulator for water control fracturing of the high-temperature and high-salt tight gas reservoir. The interface wetting regulator for water control fracturing of the high-temperature and high-salt tight gas reservoir, prepared by the preparation method provided by the invention, has multiple adsorption sites and high surface performance, is stronger in adsorption on the rock surface, has good wetting performance, and can convert a hydrophilic surface into a neutral wetting state and reduce the water phase permeability. Meanwhile, the surface tension is low, the flowback rate of fracturing fluid can be increased, and water control fracturing yield increase of tight gas reservoirs is achieved.

The application discloses a water environment ecological restoration equipment, two submersible aeration pumps draw water from a distance and inhale air, magnetic water and ionic gas, the water outlet of which is respectively transported into a filler tank, a filler box and a protein separator, the protein separator separates the tiny air bubbles with organic matter from water by the surface tension and electrostatic action of the tiny air bubbles. The large water volume makes the whole water body circulate, which not only makes the water body level replacement sufficient, but also makes the temperature of the upper and lower layers of the water body consistent, which is beneficial to inhibit the reproduction of blue-green algae. The magnetic water has oxygen aggregation and strong penetration, which is beneficial to oxygenation and makes fish and shrimp increase production and income. The ionic gas brought into the water environment has electric charge and polarity, which promotes the precipitation of pollutants and activates microorganisms, so that a good phosphorus removal effect is achieved. In the filler tank and the suspended filler box, the growth environment of microorganisms is gas, liquid and solid three phases, so that nitrification and denitrification reactions can exist at the same time, thereby improving the removal effect of organic pollutants and ammonia nitrogen.

This invention relates to a watercraft, belonging to the field of water transportation technology. By installing wings and air propellers on the top of the hull, the propellers generate powerful thrust through air rotation, propelling the hull forward. A connecting rod and float plate are installed at the bottom of the hull. The float plate generates lift during high-speed navigation, partially lifting the hull out of the water, with only the float plate in contact with the water. This significantly reduces the contact area between the hull and the water, greatly reducing drag and enabling high-speed navigation. This invention integrates the principles of aircraft aerodynamics, ship floating dynamics, and water-based gliding. Through the coordinated operation of the air propeller, wings, and float plate, the watercraft achieves a new dynamic between water surface tension drift and air-based gliding. This overcomes most water resistance, increases carrying capacity, improves energy efficiency, and expands its application range.

The application discloses a kind of closed-loop ecological marine system based on multi-species coupling and surface layer circulation, belong to closed-loop ecological marine technical field, it includes: biological coupling processing area, hydrodynamic circulation system;Biological coupling processing area.In the application, through the synergy of multi-nutrient level biological coupling and closed-loop hydrodynamic circulation, efficient self-cleaning and ecological stability to the breeding or simulated seawater body are realized, the flow generator near the water surface can accurately promote the breaking of water surface tension, increase the dissolved oxygen content and the overall ecological biochemical reaction speed and dissolved organic matter, then inorganic nitrogen and phosphorus are rapidly absorbed by feather algae, grape algae and the like, the salt plant root system provides a microbial degradation platform, the salt plant adjusts salinity and absorbs excess nutrients, coral and symbiotic algae form a stable microecological structure, the entire processing chain does not need any chemical agent addition, and the ammonia nitrogen, nitrate and phosphate concentration can be significantly reduced, and dissolved organic carbon is continuously and efficiently removed, which fundamentally avoids the high energy consumption and chemical secondary pollution problems of traditional mechanical filtration.

The invention discloses an environment-friendly ozone water treatment system and process, and relates to the technical field of ozone water processing, the environment-friendly ozone water treatment system comprises a storage tank and a sealing ring, the sealing ring is fixedly mounted on the surface of the top end of the storage tank, a sealing block is movably mounted on the inner wall of the sealing ring, and an ultrasonic vibration rod is fixedly mounted on the inner wall of the sealing block; a recovery pipe is fixedly mounted on the outer side surface of the sealing ring; through cooperative work of the storage tank, the ultrasonic vibration rod in the sealing ring, the ozone recovery tank and the ozone generation tank, the problems of low ozone utilization rate and unstable bubbles are solved. Wherein the ultrasonic vibration rod switches high and low frequency modes through the controller: the surface tension of bubbles is destroyed at low frequency (28 kHz), and ozone gas is recovered to the recovery tank; and the cavitation effect is triggered to generate stable bubbles of 50-200 microns at high frequency (40 kHz), so that the defect that the ozone dissipation rate of the ozone water is relatively high due to the fact that the mixed ozone water cannot be treated by equipment in the prior art according to the use environment and the transportation environment is overcome.

The invention relates to the technical field of environment-friendly materials, in particular to a composite environment-friendly dust suppressant for an industrial solid waste landfill and a preparation method of the composite environment-friendly dust suppressant. According to the technical scheme, the composite type environment-friendly dust suppressant for the industrial solid waste landfill is prepared from components in percentage by mass; according to the method, a multi-factor mathematical model is constructed by introducing a response surface method and orthogonal experimental design, accurate proportioning optimization of components such as a wetting agent, a water-retaining agent and a binder is realized, and better dust wetting efficiency is verified through surface tension and contact angle experiments; in the aspect of cohesiveness, durability and stability of a consolidation layer are realized through film-forming property and wind erosion resistance tests; in the aspect of water retention, the long-acting moisturizing capacity is ensured through water retention rate and freeze-thaw resistance experiments, the technical threshold of the dust suppressant is fundamentally improved, and reliable technical support is provided for the dust suppression requirement in a complex environment.

A sliding member according to the present disclosure comprises: a first member that contains a ceramic as the main component and has a first sliding surface; and a second member that contains a ceramic as the main component and has a second sliding surface that is capable of sliding with respect to the first sliding surface. The first sliding surface has a protruding surface shape. An inner region of the second sliding surface is in contact with an inner region of the first sliding surface, and an outer region of the second sliding surface is spaced apart from an outer region of the first sliding surface. At least one of the first member and the second member is provided with a flow path for water or for a liquid having a surface tension lower than that of water. The first and the second sliding surfaces are each a semi-specular surface.