582 results about "Aqueous droplet" patented technology

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the material may be based on physical characteristics of the material (including fluid accumulation on the material).

The present disclosure relates to methods, compositions and systems for droplet processing. For example, a method can include (a) partitioning a plurality of cells into a plurality of aqueous droplets, wherein an aqueous droplet of the plurality of aqueous droplets comprises a cell of the plurality of cells; and delivering a micellized lysis agent to the cell in the aqueous droplet.

The invention discloses a preparation method of a photo-thermal super-hydrophobic coating with excellent anti-icing / deicing performance in a low-temperature and high-relative-humidity environment, which comprises the following steps of: firstly, growing photo-thermal Cu-MOF (Metal Organic Framework) nano particles on the surfaces of fibrous clay mineral nano particles with low heat conductivity coefficient in situ to construct composite photo-thermal particles with a two-stage nano / nano structure; the preparation method comprises the following steps: preparing nano-particles, then carrying out low surface energy modification on the nano-particles, introducing a low-heat-conductivity-coefficient binder, inducing the binder to generate phase separation through a non-solvent to form a micron-scale binder / low-surface-energy nano-particle aggregate, and finally, spraying to construct the photo-thermal super-hydrophobic coating with a three-level micro / nano / nano structure. The three-level micro / nano / nano structure of the coating simultaneously endows the coating with excellent photo-thermal performance in a low-temperature and high-relative-humidity environment and Cassie-Baxter state stability of liquid drops on the surface of the coating, so that the coating has excellent passive anti-icing / frosting and active deicing / defrosting performance in the environment. The low heat conduction characteristic of the coating further inhibits heat exchange between the base material and water drops, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the invention also has the advantages of simple preparation method, large-area preparation and the like, and lays a solid foundation for the practical application of the photo-thermal super-hydrophobic anti-icing coating.

The invention relates to the technical field of super-hydrophobic anti-icing coatings, in particular to a low-temperature thermochromic super-hydrophobic anti-icing coating and a preparation method thereof. According to the specific technical scheme, low-temperature thermochromic phase change microcapsules and nanoscale hydrophobic silicon dioxide particles are dispersed in an organic solvent, an adhesive and a curing agent are added, and the super-hydrophobic surface with the micro-nano hierarchical structure, the latent heat regulation function and the temperature visual feedback function is constructed through a spraying method. The obtained coating has excellent super-hydrophobicity, and water drop adhesion can be effectively reduced; the phase change microcapsules contained in the coating release latent heat during low-temperature solidification, and surface temperature reduction and icing are remarkably delayed; and meanwhile, the color of the coating is obviously and reversibly changed along with the reduction of the temperature, so that the visual early warning of the low-temperature icing risk is realized. The problems that a traditional super-hydrophobic coating is insufficient in low-temperature anti-icing long-term effect and lacks an early warning function are solved, the super-hydrophobic coating is suitable for low-temperature anti-icing occasions, and the sensing-regulation-protection integrated function is achieved.

The invention provides a method for preparing a catalyst material based on a hydrothermal method, and relates to the technical field of exhaust gas aftertreatment catalytic materials. The method comprises the following steps: dissolving cerium salt and transition metal salt in deionized water to form a precursor solution; taking hexadecyl trimethyl ammonium bromide as a template agent, and dissolving the template agent in the precursor solution; dropwise adding ammonia water into the precursor solution to adjust the pH value to alkalescence; putting the precursor solution into a reaction kettle for high-temperature hydrothermal treatment; filtering, drying and grinding the solution subjected to hydrothermal treatment, and then carrying out high-temperature roasting treatment; and performing segmented reduction on the roasted sample by using hydrogen to obtain the catalyst material. The preparation method has remarkable technical effects in the aspects of increase of active sites of the catalyst, increase of specific surface area, remarkable improvement of future application prospect and performance and the like.

The invention discloses a transparent super-hydrophobic cultural relic protection material and a preparation method thereof.The method comprises the steps that firstly, a hydrolyzed silane coupling agent is grafted to the surface of silicon dioxide, then amino of the hydrolyzed silane coupling agent reacts with carboxyl of chain fatty acid, chain alkyl is grafted to the surfaces of silicon dioxide particles, and the transparent super-hydrophobic cultural relic protection material is obtained. The prepared material has excellent super-hydrophobicity, the contact angle of water drops on the surface of a coating is large, the rolling angle of the water drops on the surface of the coating is small, the water drops are difficult to stay on the surface of the coating, and therefore water permeation is effectively prevented. Meanwhile, due to the transparency of the silicon dioxide particles and the chain fatty acid, the coating can keep high transparency, and the original color and pattern of the cultural relic cannot be shielded or changed. The silane coupling agent serves as a bridge for connecting the silicon dioxide particles and the chain fatty acid, the chemical bonding effect in the coating can be enhanced, the coating is not prone to aging and cracking, the material has the advantages of being good in high temperature resistance and ultraviolet light resistance, and therefore the preservation life of the cultural relics is prolonged.

The invention discloses a Cl-Bi carbon dioxide reduction electrocatalyst, a preparation method thereof and application of the Cl-Bi carbon dioxide reduction electrocatalyst in preparation of formic acid through catalytic reduction of carbon dioxide, and belongs to the technical field of electrocatalyst materials. The preparation method comprises the following steps: preparing a sodium chloride solution, adjusting the pH value with acid, adding Bi2O3, carrying out a stirring reaction, washing a reactant, and drying to obtain BiOCl; the preparation method comprises the following steps: dispersing BiOCl, carbon black and naphthol in ethanol, carrying out ultrasonic treatment to obtain ink, dripping the ink onto hydrophobic carbon paper, drying, and reducing under negative voltage to obtain the Cl-Bi carbon dioxide reduction electrocatalyst. The prepared Cl-Bi carbon dioxide reduction electrocatalyst is simple in preparation method, free of pollution, rich in raw material and low in price, and the Cl-Bi carbon dioxide reduction electrocatalyst has high formic acid production selectivity, high formic acid yield and excellent stability.

The present invention discloses a preparation method of a photothermal super-hydrophobic coating with excellent anti-icing / de-icing performance under a low temperature and high relative humidity environment, first by in situ growth of photothermal Cu-MOF nanoparticles on the surface of low thermal conductivity fibrous clay mineral nanoparticles, constructing a two-level nano- / nano-structured composite photothermal particle, which is then subjected to low surface energy modification and introduced into a low thermal conductivity binder, and a binder is induced to phase separate to form a micron-scale binder / low surface energy nanoparticle aggregate by a non-solvent, and finally a photothermal super-hydrophobic coating with a three-level micro- / nano- / nano-structure is constructed by spraying. The three-level micro- / nano- / nano-structure of the coating simultaneously gives the coating excellent photothermal performance and the Cassie-Baxter state stability of the droplet on the coating surface under a low temperature and high relative humidity environment, so that it has excellent passive anti-icing / frosting and active de-icing / defrosting performance in this environment. The low thermal conductivity of the coating further suppresses the heat exchange between the substrate-water droplets, so that the passive anti-icing / frosting performance of the coating is further improved. In addition, the present invention has the advantages of simple preparation method and large-area preparation, laying a solid foundation for the practical application of photothermal superhydrophobic anti-icing coatings.

The invention discloses a preparation method of a nanofiltration membrane with high magnesium and lithium selectivity. The method mainly comprises the following steps: (1) preparing an aqueous phase solution containing macrocyclic amine; (2) soaking a polyether sulfone base membrane into the water-phase solution in the step (1) for a certain time, taking out the base membrane, and removing redundant water drops; (3) preparing a normal hexane solution containing acyl chloride; (4) soaking the base membrane in the step (2) into the n-hexane solution in the step (3), and reacting for a certain time; (5) soaking the membrane in the step (4) into a secondary reaction aqueous solution containing an amine monomer, and reacting for a certain time; and (6) putting the obtained composite membrane into a drying oven, and heating for a period of time to obtain the high-magnesium-lithium selective nanofiltration membrane. The nanofiltration membrane prepared by the method has relatively high magnesium-lithium selectivity.

The invention discloses an anti-icing wire, a manufacturing production line and a manufacturing method of the anti-icing wire. The anti-icing wire comprises a wire core; the inner-layer aluminum wire is arranged on the outer side of the wire core; the outer-layer aluminum wire is arranged on the outer side of the inner-layer aluminum wire; and the outer surface hydrophobic layer is made of a hydrophobic material and is arranged on the outer side of the outer-layer aluminum wire. The invention discloses a production line for manufacturing an anti-icing wire. The production line is provided with a first cleaning device, a wire sand blasting machine, a second cleaning device, a wire coiling device, a first spraying chamber, a first drying chamber, a second spraying chamber and a second drying chamber which are used for producing the anti-icing wire. The surface of the wire is coated with a large amount of hydrophobic materials, the capture rate of a power transmission line on supercooled water drops can be reduced, the adhesive force between ice and the coating can be reduced, the super-hydrophobic coating can delay freezing of the water drops on the surface of the coating, and therefore deicing or icing prevention is achieved. The anti-icing cable is especially suitable for being used in icing areas, and has a good anti-icing effect.

an integrated, modular system for automated aqueous droplet generation with high monodispersity. The system includes dynamic feedback control of droplet size and input pressure. Input pressure is generated by two piezoelectric micropumps. Droplet sizes are determined via light intensity measurement in an LED-photodiode setup. The system includes a wireless communication and has a low enough power consumption for battery-powered operation.

The invention provides a preparation method of a super-amphiphobic high-reflection coating, and relates to the technical field of self-cleaning materials. A one-step method is adopted, and the core is to prepare functional super-amphiphobic particles with micro-nano structures. A micro-nano composite structure is constructed by a method of regrowing silicon dioxide on the surfaces of micron-scale barium sulfate, titanium dioxide or calcium carbonate particles, and then surface modification is performed to prepare the super-amphiphobic particles. And mixing the prepared particles with a water-based emulsion, alcohol-soluble or ester-soluble resin, a coalescing agent, a defoaming agent, a wetting leveling agent and an adhesive according to a certain ratio to prepare the coating. And finally, a coating with high reflectivity and super-amphiphobic performance is formed on the surface of the substrate, so that the contact angle of water drops and oil drops on the surface of the material is greater than 150 degrees.

Provided herein are methods for replenishing dissolved gas to aqueous droplets on a digital microfluidic device. Provided herein are methods of cell-free protein synthesis, optimized cell-free protein synthesis (CFPS) reagents, and methods for optimizing CFPS reagents to increase protein expression yield. The method is suitable for protein expression on microfluidic devices having hydrophobic surfaces by circulating a fill fluid to introduce additional oxygen.

The present invention discloses a transparent super-hydrophobic cultural relic protection material and a preparation method thereof. The method first grafts a hydrolyzed silane coupling agent onto the surface of silica, and then utilizes the amino group of the hydrolyzed silane coupling agent to react with the carboxyl group of a chain fatty acid to graft a chain alkyl group onto the surface of silica particles. The prepared material has excellent super-hydrophobicity, a large contact angle of water droplets on the coating surface, and a small rolling angle, making it difficult for water droplets to stay on the coating surface, thereby effectively preventing moisture penetration. At the same time, due to the transparency of the silica particles and the chain fatty acid, the coating can maintain a high transparency and will not block or change the original color and pattern of the cultural relic. The silane coupling agent acts as a bridge connecting the silica particles and the chain fatty acid, which can enhance the chemical bonding inside the coating, making the coating less prone to aging and cracking, and giving the material good high-temperature resistance and the advantage of resisting ultraviolet light, thereby extending the preservation life of the cultural relic.

1. The name of the design product: water droplet humidifying aromatherapy machine (KJR-321). 2. The use of the design product: for increasing air humidity and air fragrance by atomizing and volatilizing water and spices. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.

The utility model relates to the technical field of faucets, in particular to a water-vapor separation box and a faucet, and aims to solve the problem that when the water outlet flow of an outlet of the water-vapor separation box on the faucet is changed, the water shape is easy to change, and water drops splash. In order to achieve the purpose, the water-vapor separation box used for being installed on the faucet comprises a shell, a water-vapor separation cavity is formed in the shell, a water inlet and an exhaust port which are communicated with the water-vapor separation cavity are formed in the shell, a water outlet communicated with the water-vapor separation cavity is formed in the bottom of the shell, and the water outlet serves as a water outlet of the faucet. A mesh plate is arranged at the water outlet, and the middle area of the upper surface of the mesh plate is sunken downwards relative to the edge area. Due to the fact that the middle area of the upper surface of the mesh plate is sunken downwards relative to the edge area, water flow at the water outlet converges towards the middle area of the mesh plate, the outlet water flow has a good outlet water shape, and the risk of water drop splashing is reduced.

A three-dimensional ice accretion reconstruction method and apparatus for a fan blade, and a device and a storage medium. The method comprises: using a cross-sectioning method to cut a fan blade, so as to obtain two-dimensional airfoil-section coordinate data of each position; performing airflow field calculation on each two-dimensional airfoil section, so as to obtain an external airflow velocity of each two-dimensional airfoil section; performing force analysis on water droplets, calculating impingement positions of the water droplets on each two-dimensional airfoil section, and then calculating a local water droplet impingement coefficient and a freeze fraction; on the basis of the local water droplet impingement coefficient, the freeze fraction and environmental parameters, acquiring the thickness of an ice accretion on each two-dimensional airfoil section and an ice accretion shape on each two-dimensional airfoil section; on the basis of the thicknesses of the ice accretions, updating the two-dimensional airfoil-section coordinate data; performing ice accretion calculation at the next time step until a preset condition is met; and performing lofting processing on each two-dimensional airfoil section, so as to obtain a three-dimensional ice accretion shape result of the fan blade. The increased thicknesses and shape of ice accretions of a fan blade under different working conditions are quickly obtained with a small amount of calculation.

A shower head is supplied with an annular airflow which surrounds a column of water travelling through a chamber to produce a suspension of water droplets in air, the diameter and length of the chamber and the diameter of the water column are selected in combination with the fluid flow parameters to operate the shower within a defined parameter space corresponding to the non-axisymmetric Rayleigh breakup regime, where the water column remains intact and spaced apart from the chamber wall for the entire length Lc of the chamber, where the airflow perturbs the water column within the chamber causing it to disintegrate into droplets downstream of the chamber outlet, and where multiple chambers are moulded on non-parallel axes with elastomeric linings facilitating withdrawal of the mould tool.

The invention discloses a preparation method of a super-hydrophobic nano coating, and relates to the technical field of nano coatings, and the preparation method specifically comprises the following preparation steps: step 1, under the temperature condition of 20-50 DEG C, ultrasonically dispersing 1.5-3 parts of modified nano silicon dioxide in 60-80 parts of deionized water, adding 1-4 parts of modified graphene oxide, stirring at the rotating speed of 800-1000 r / min for 15-30 min, and then adding 1-3 parts of a dispersing agent, and stirring at the rotating speed of 800-1000 r / min for 20-30 min; adding 0.8-1.5 parts of a tin dioxide core / shell structure, and continuously stirring for 24-72 hours to obtain a super-hydrophobic nano coating solution; and 2, coating the surface of the cleaned substrate with the super-hydrophobic nano coating solution by adopting a spraying, brush coating, dip coating or spin coating method, and naturally airing to obtain the super-hydrophobic nano coating. According to the invention, hydrophobic groups are introduced to the surface of nano silicon dioxide, long-chain organic groups are connected to the surface of silicon dioxide, and the organic groups can reduce the surface energy of the coating and increase the contact angle of water drops on the surface of the coating, so that the hydrophobicity of the coating is improved.

The invention discloses a preparation method of composite hydrogel microparticles triggered by PH (Potential of Hydrogen). According to the method disclosed by the invention, emulsion templates in different forms are constructed, and acetic acid molecules in an oil phase are diffused to enter water-phase liquid drops so as to lower the pH value of a chitosan-alginic acid homogeneous solution, so that chitosan is protonized and is subjected to ionic crosslinking with alginic acid carboxyl; further, the preparation of chitosan-alginic acid composite microspheres, microcapsules and core-shell hydrogel microparticles is realized. The prepared composite hydrogel microparticles show good morphology stability, monodispersity and a certain autofluorescence characteristic. Meanwhile, no organic solvent or harmful cross-linking agent is used for microsphere forming, and the prepared microparticles have good application prospects.

The invention relates to a cyclic utilization method of a maleic anhydride epoxidation catalyst. The method comprises the following steps: completely introducing a synthesized epoxy succinic acid reaction solution into an anion exchange column, adsorbing anions of a catalyst by using anion exchange resin, leaching the anion exchange column by using pure water, applying leacheate and the adsorbed reaction solution to synthesis of polyepoxysuccinic acid, adding quantitative maleic anhydride and water into a reaction kettle, and reacting for 2-4 hours at the temperature of 60-80 DEG C; and dropwise adding liquid alkali for hydrolysis, adding anion resin adsorbing the catalyst, heating, dropwise adding an aqueous hydrogen peroxide solution, then carrying out suction filtration, separating the anion resin from the epoxy succinic acid reaction solution, and continuously using the obtained anion resin and epoxy succinic acid reaction solution according to the steps to complete the recycling of the catalyst. According to the method, the specific anion resin is used for adsorbing the catalyst in the reaction system, and the catalyst and the adsorption resin can be recycled for multiple times only by adding the resin adsorbing the tungsten and molybdenum catalysts into the reaction system.

The impurity-containing supercritical carbon dioxide conveying pipeline hydrate generation prediction method comprises the steps that heat exchange between a pipeline and the surrounding environment and distribution of water drops in the pipeline are considered, hydrate generation thermodynamic factors are considered, and a Chenn-Guo hydrate generation model is used for determining phase equilibrium parameters of hydrate generation in impurity-containing carbon dioxide; and determining the hydrate generation position by combining the temperature-pressure distribution of the pipeline. The volume of the carbon dioxide hydrate particles is calculated according to the sum of the volume of the water drops and the volume of the hydrate film covering the water drops, hydrate growth kinetic factors are considered, the volume of the hydrate film is related to the transverse growth rate and thickness of the hydrate film, and the transverse growth rate is determined through a comprehensive growth model; and the thickness growth of the hydrate film is similar to condensation heat transfer. And predicting the generation amount of the hydrate particles in the pipeline by combining the distribution characteristics of the water drops in the pipeline. According to the method, the generation position and the generation amount of the hydrate in the pipeline are predicted.

The invention discloses an anti-condensation and anti-icing membrane material and a forming process thereof, and relates to the technical field of composite membrane materials, the anti-condensation and anti-icing membrane material comprises the following raw materials: 30-50 parts of silica aerogel particles, 25-30 parts of an EVA base material, 5-10 parts of a hydrophobic modifier, 0.5-1 part of sodium polyacrylate, 5-8 parts of nano calcium carbonate, 3-5 parts of aluminum hydroxide, 0.5-1 part of a silane coupling agent and the like. The silicon dioxide aerogel particles serve as a core heat insulation material, the porous network structure of the silicon dioxide aerogel particles remarkably reduces the heat conductivity coefficient of the base film, passive heat insulation is achieved, the vacuum barrier effect is formed, heat conduction and convection are greatly reduced, the energy-saving and heat-preservation effect is improved, the surface temperature is delayed to be reduced to be below the freezing point, and the freezing time is delayed in the low-temperature environment; and the low surface energy characteristic of the fluorine-containing resin is combined with the micro-nano coarse structure of the nano silicon dioxide, so that a lotus leaf effect imitating super-hydrophobic surface is formed, water drops rapidly roll down, and ice nucleus forming sites are reduced.

The utility model discloses an atomization device for space purification. The atomization device comprises a spraying assembly, a pump, a pressure relief device and a control unit. The water outlet end of the pump is connected with the water inlet end of the spraying assembly, the water inlet end of the pump is connected with a water source, the water inlet end of the spraying assembly is connected with the pressure relief device through a water return pipeline, and the pump and the pressure relief device work alternately. The control unit is connected with the pump and the pressure relief device and determines the water shortage fault according to the load parameters of the pump. The pump and the pressure relief device of the atomization device work alternately, when the pump stops working, the pressure relief device is opened, the pressure relief device closes the water return pipeline at the moment, disinfection liquid enters the spraying assembly, the pressure in the spraying assembly is reduced through the pressure relief assembly, and the problem that when the pump stops working, the disinfection liquid flows into the spraying assembly is solved. The residual liquid in the spraying assembly drips in the form of water drops under the residual pressure; in addition, load parameters of the pump are obtained through the control unit and serve as judgment standards of the water shortage faults, and then real-time diagnosis of the water shortage faults of the atomization device is achieved.

The invention is suitable for the technical field of hygroscopic materials, and provides a hygroscopic material based on a polymer film and a preparation method and application thereof. The hygroscopic material is based on a polymer film, an activated area is formed on the surface of the polymer film through plasma activation treatment, and then a modified area is formed on the surface of the polymer film through chemical adsorption and silanization reaction; the modified area is used for capturing water vapor and condensing and gathering into liquid drops, and the activated area is used for reducing water drop sliding angle and contact angle lag and promoting liquid drop conveying. The moisture absorption material with a hydrophilic-hydrophobic dual-function (Janus) structure is constructed, efficient moisture absorption and droplet aggregation can be achieved, and the requirement for small-area dehumidification is met; the system realizes dehumidification by virtue of physical and chemical characteristics of the moisture absorption material, and is low in energy consumption, energy-saving and environment-friendly; the optimized dehumidification process ensures that the moisture absorption material is recycled for multiple times without reducing the performance, the service life of equipment is effectively prolonged, and the maintenance frequency is reduced; the system adopts a miniaturized design, and is suitable for distributed and small-area application.

The invention relates to a micro-lubrication friction and resistance reduction method of a fullerene C60 nanosphere particle cutting fluid, and belongs to the field of metal cutting process methods and cutting lubrication. According to the method, through the steps of compressed air adjustment, fullerene nanosphere particle cutting fluid blending, oil-water mixing adjustment, three-phase mixed cutting fluid preparation, atomization spraying and the like, stable and tiny oil film water-drop-attached liquid drops are formed and accurately sprayed to a cutting area. The fullerene nanosphere particles can form a nano rolling boundary lubricating film with high bearing capacity and low shear strength on a tool-workpiece / chip contact interface due to unique properties, so that the friction coefficient is remarkably reduced, and the tool wear is reduced. Meanwhile, efficient cooling is achieved through the oil film water drop attaching technology, cuttings are blown away through high-pressure spraying, and tool abrasion and machining quality reduction caused by accumulation are avoided. According to the method, an efficient and accurate lubricating, friction-reducing and resistance-reducing solution is provided for metal cutting machining.

A spectrophotometric system and method for quantifying water content in a liquid hydrocarbon stream is disclosed. The system can include at least one light source that produces a light having a desired wavelength and a flow chamber that allows passage of a sample of the liquid hydrocarbon stream. The light is configured to pass through the liquid hydrocarbon stream within the flow chamber. The system can also include at least one photosensitive detector array that measures an intensity of the light at one or more desired wavelengths of the light after it passes through the liquid hydrocarbon stream in the flow chamber. The intensity measurement of the at least one photosensitive detector array is used to quantify the undissolved water content of the liquid hydrocarbon stream.

The invention belongs to the technical field of plate preparation, and particularly relates to a galvanized plate special for household appliances and a preparation method thereof. The surface of the galvanized sheet contains a hydrophobic coating, and the hydrophobic coating comprises the following raw materials in parts by mass: 60-80 parts of organic silicon modified polyurethane, 5-15 parts of carbon nanotubes, 5-10 parts of large-particle-size inorganic nanoparticles, 1-5 parts of small-particle-size inorganic nanoparticles, 0.1-3 parts of a flatting agent, 0.1-2 parts of a defoaming agent and 50-1000 parts of a solvent. By compounding the linear curled carbon nanotubes, the small-particle-size inorganic nanoparticles and the large-particle-size inorganic nanoparticles, the dispersity of the filler in the coating can be improved, the roughness of a micro-nano rough structure on the surface of the coating is greatly improved, an air cushion layer exists in the structure, when water drops make contact with the rough surface, the air cushion layer lifts the rough surface, and the surface of the coating is protected. And the grooves on the rough surface cannot be filled with water drops, so that the coating has super-hydrophobic capacity.

The utility model discloses a desorption device for carbon dioxide capture, which relates to the field of carbon dioxide capture and comprises a shell and a demister arranged in the shell, and a drainage mechanism is arranged below the demister. The drainage mechanism comprises a fixing rod fixedly connected to the demister, and an inclined drainage plate is arranged on the fixing rod. According to the desorption device for capturing the carbon dioxide, the inclined drainage plate is arranged below the demister, and the lower end of the drainage plate can be communicated with the collecting device, so that when water drops in the demister drop, part of the water drops drop on the drainage plate and flow into the collecting device along the drainage plate, and the water drops in the demister are separated from the collecting device. The amount of water drops falling into the rich solution is reduced, so that the desorption efficiency of the rich solution can be improved; part of water drops are blocked by the drainage plate, so that the probability that carbon dioxide is brought into the rich solution again by the water drops can be reduced, and the desorption efficiency is further improved.

The invention relates to a polypropylene hydrophilic modification method, an obtained material and a container cover prepared from the material. The hydrophilic modification method of the polypropylene comprises the following steps: uniformly mixing the components of the raw materials; adding the mixture into a double-screw extruder for melt grafting; and cooling the polymer melt extruded by the twin-screw extruder with water to obtain solid polymer strips, drying the polymer strips, and granulating to obtain hydrophilic polypropylene particles, namely the hydrophilic polypropylene composite material. The high-performance hydrophilic polypropylene composite material disclosed by the invention has excellent mechanical properties, the hydrophilic performance is also greatly improved, and the preparation process is simple. According to the container cover made of the material, the problems that water drops adhere to the container cover due to water vapor condensation and water drops scatter when the container cover is opened can be solved, the water drop phenomenon is improved into the water film phenomenon, the water drops scatter when the container cover is opened is avoided, the volatilization speed of water on the surface of the container cover is increased, and therefore the use dryness is enhanced, and the use experience of a user is improved.