62 results about "Phase separation process" patented technology

The present application relates to a composite diaphragm, and a preparation method therefor and the use thereof. The composite diaphragm comprises a three-dimensional porous support layer and a membrane material, wherein pores of the three-dimensional porous support layer are filled with the membrane material; the three-dimensional porous support layer comprises fiber filaments and / or a fiber cloth, and the fiber filaments and / or fiber filaments constituting the fiber cloth are hydrophilic fiber filaments and / or roughened fiber filaments. The composite diaphragm forms an elastic collapse-resistant support framework by means of multi-layer stacking, interweaving and winding of the fiber filaments, which improves the compression strength of the diaphragm; the treated fiber filaments can increase their contact with a casting solution, and the casting solution and the fiber network are interactively filled, which increases the contact volume between a liquid membrane and a phase separation non-solvent and delays the phase separation process during solidification so as to form a uniform sponge microporous dense structure, such that the formation of large finger-shaped through holes is inhibited, thereby facilitating the blocking of gas passage and improvement to the chemical stability. The casting solution is uniformly distributed in the fiber framework, and the membrane material is firmly anchored by the three-dimensional fiber network after solidification, such that the mechanical stability of the diaphragm is improved.

The invention discloses a green preparation method for realizing a high-performance chitosan film through pH regulation and control of a citric acid buffering agent, and belongs to the field of food packaging and high polymer materials. According to the method, a water phase separation method is adopted, a citric acid buffering agent serves as a water phase environment, and a chitosan solution is induced to be subjected to phase separation and gelation by regulating and controlling the pH value (preferably 5.0-5.5) of the citric acid buffering agent. The preparation method comprises the following specific steps: dissolving chitosan powder in an alkali urea solvent (KOH: urea: water = 7: 12: 81), inducing gelation through a citric acid buffer agent, carrying out solvent replacement through an ethanol solution, and drying and curing. According to the method, a chemical cross-linking agent does not need to be used, and the core is that a buffer system is used for regulating and controlling the phase separation process to promote aggregation among chitosan molecular chains, so that a compact physical structure network is constructed. The prepared chitosan film has excellent mechanical strength, water resistance, gas barrier property, biocompatibility and degradability, and is suitable for the fields of food, medicine packaging and the like.

Compositions and methods for three-dimensional (3D) printing of a variety of products are described. The composition comprises (i) a photoredox component comprising an electron donor and a redox shuttle, and (ii) one or more photoinert materials. The disclosed compositions and methods related to 3D nanoprinting techniques mainly utilize physical processes of phase separation induced by molecular aggregation from light energy input. The driving force of molecular aggregation comes from a photoredox active component in the vicinity of one or more photoinert materials (e.g., molecules to undergo molecular aggregation). Preferably, the collision between the photoredox active component and one or more photoinert materials provides a general phase separation process. The photoredox active component acts as an active bath, allowing any submerged inert reagent to inherit the active properties of the photosensitizer.

The invention discloses a self-supporting metal organic framework polymer composite interface modification membrane and a preparation method thereof. According to the membrane, polyvinylidene fluoride (PVDF) is used as a flexible substrate, a self-supporting structure is formed through a phase separation process, and a ZIF-8 nanosheet array with a Sodalite type topological structure grows on the surface in situ. Relates to the technical field of lithium metal battery diaphragms and interface modification. The composite membrane prepared by the invention has high specific surface area, uniform pore size distribution and excellent mechanical stability and cycling stability, can provide a uniform lithium ion transmission channel while ensuring the wettability of an electrolyte, effectively inhibits dendritic crystal generation and reduces interface impedance. The preparation method provided by the invention is mild in condition and simple and convenient in process, can be compatible with an existing battery production process, and is suitable for large-area preparation. The composite membrane is not only suitable for a lithium metal battery, but also can be expanded to a sodium metal battery, a solid-state battery and a lithium-sulfur battery, and a new material scheme is provided for realizing safe and long-life operation of a high-energy-density energy storage system.

The invention provides a material microstructure digital design method based on a non-local model. The material microstructure digital design method can be used for controlling the microstructure and performance of a material. The method comprises the following steps: establishing a fractional order Cahn-Hilliard equation model for describing diffusion and phase separation processes of components in a material; selecting non-local parameters to control the phase distribution characteristics of the material; the fractional order equation is solved through numerical values, and material component space distribution under different non-local parameter values is obtained; constructing a material atom model based on the obtained component distribution; and analyzing the performance of the constructed model in combination with molecular dynamics simulation. By regulating and controlling non-local parameters, materials with different microstructures can be obtained under the same component proportion, accurate control of the microstructures and collaborative optimization of multiple properties such as strength, toughness and conductivity are achieved, and the method is suitable for material design in the fields of electronic packaging, high-performance conductors, aerospace and the like.

The invention relates to the technical field of adsorbent preparation, and discloses a preparation method of an efficient separation adsorbent for indium and germanium in a zinc solution, which comprises the following steps: in a porous inorganic mineral substrate, dipping a mixed solution containing an organic functional agent, a monomer, a cross-linking agent, a pore-foaming agent and an organic solvent under ultrasonic treatment; the in-situ polymerization reaction and the polymerization-induced phase separation process are carried out concurrently through cooperative regulation and control of multiple chemical and physical processes, physical embedding of the functional agent on the mineral substrate is achieved to solve the loss problem, and meanwhile the in-situ polymerization reaction and the polymerization-induced phase separation process are carried out at the same time. And an internal microporous structure of a polymer network is synchronously constructed, and the chemical activity of the functional agent is guaranteed, so that the adsorbent has high stability and high-speed mass transfer kinetics.

This invention provides a high-performance, high-precision gradient pore ultrafiltration membrane and its preparation method, belonging to the field of membrane preparation technology. Lithium chloride can alter the thermodynamic properties of the casting solution, affecting the aggregation state of polymer molecules and the phase separation process. CTAB has multiple functions in the phase inversion membrane preparation process; as a non-solvent additive, it regulates the phase separation behavior of the polymer PVDF, promoting the formation of more uniform nanoscale channels. DOP has a unique molecular structure and physicochemical properties, playing a multifaceted role in improving membrane performance; by inserting itself between PVDF molecular chains, it weakens the intermolecular forces, making the molecular chains more loosely arranged, thereby forming more interconnected channels and increasing flux. Simultaneously, it helps to form a narrow pore size distribution, reducing macropore defects and improving retention accuracy. This invention, through the mixing of the above substances, effectively achieves a high-porosity, nanoscale pore structure, realizing a high-performance, high-precision gradient pore ultrafiltration membrane preparation method.

The invention belongs to the technical field of membrane materials, and particularly relates to a preparation method of a dumbbell-shaped polyethersulfone virus-removing membrane, which comprises the following steps: S1, mixing a membrane-forming polymer, an amphiphilic polymer, a non-solvent pore-foaming agent and an organic solvent, stirring, dissolving and defoaming to obtain a uniform and stable membrane casting solution; s2, blade-coating the membrane casting liquid on a support body to form a liquid membrane; s3, exposing the liquid film in humidity-controllable air for a period of time, and carrying out a steam-induced phase separation process; s4, immersing the cast film obtained in the step S3 into a coagulating bath to complete phase inversion so as to form a solid-state film; s5, the formed solid membrane is sequentially subjected to water washing, hole preserving treatment and drying, and the dumbbell-shaped polyethersulfone virus-removing membrane is obtained. The compact layer in the dumbbell-shaped structure ensures the high virus rejection rate, and the porous structure with the open interior reduces the transmission resistance of water to the minimum, so that the unification of the high virus rejection rate and the high water flux is realized, and the protein transmittance is ensured to be more than 98%.

The application discloses a hydrogel with a directional conical porous structure and a preparation method thereof, and belongs to the technical field of atmospheric water collection.The directional conical porous structure hydrogel with atmospheric water collection capacity is prepared by first preparing a uniform sodium alginate solution and an acid solution respectively, then pouring the sodium alginate solution into a mold, adding the acid solution, and finally obtaining the hydrogel with the directional conical porous structure through an acid-induced phase separation process.Compared with traditional hydrogels, the hydrogel obtained by the application not only has a rapid moisture absorption-desorption efficiency, but also has excellent cycle stability.In a plurality of moisture absorption-desorption cycles, the hydrogel can maintain a high moisture absorption amount, reduce moisture absorption salt loss, and prolong the service life of the material; and the preparation process of the application is simple, the cost is low, the environmental friendliness is high, and industrial production can be realized.

The application discloses a preparation method of a PVDF-polydopamine blended ultrafiltration membrane based on NaClO induction, and comprises the following steps: (1) dissolving PVDF, polyvinylpyrrolidone and dopamine in an organic solvent, and gradually stirring and heating to form a homogeneous casting solution; (2) uniformly coating the homogeneous casting solution on the surface of a glass plate by using a scraper, and then standing at room temperature; and (3) immersing and standing the coated glass plate in a constant-temperature NaClO solution, and forming a film by phase separation oxidation to obtain the blended ultrafiltration membrane. According to the preparation method, the dopamine monomer is directly added in the casting solution, NaClO is only introduced in the gel bath in the membrane forming stage of the traditional phase separation method, and a redox reaction is induced on the membrane interface in the phase separation process, so that a homogeneous polydopamine coating layer can be formed on the membrane surface in the phase separation process; the operation method is simple, the polydopamine formation period is short, the applicability is strong, and the stability, hydrophilicity and permeability of the membrane are good.

Disclosed herein are methods for recording grating structures and the resulting grating structures. In one example, the method includes depositing a holographic mixture containing a mixture of a monomer and an inert material on a first substrate, exposing the holographic mixture to form nanostructures containing polymer-rich regions and inert material-rich regions using a holographic exposure phase separation process, removing the inert material from the inert material-rich regions to form a grating containing polymer-rich regions and regions containing a residual polymer network, applying an ashing process to the regions containing the residual polymer network to form an ashed grating containing polymer-rich regions and air regions, and depositing a coating material on the ashed grating to form a coated grating, where the coating material backfills the air regions and covers the polymer-rich regions.

This invention belongs to the field of flexible strain sensor technology, and particularly relates to the preparation of a carbon nanotube coil flexible strain sensor based on the evaporation-induced phase separation method guided by Hansen's solubility parameter theory. The method involves screening the solvent-solute system based on Hansen's solubility parameter theory, first modifying the carbon nanotube coil with Fe-Sn bimetallic catalytic growth and acidification functionalization, then preparing a carbon nanotube coil / thermoplastic polyurethane composite porous membrane via a one-step evaporation-induced phase separation method, and finally encapsulating the membrane with electrodes to obtain the finished flexible strain sensor. The method includes three steps: formulation screening based on HSP theory, growth and functionalization modification of CNCs, and one-step sensor preparation. By controlling the precipitation behavior of the polymer phase and conductive filler phase during the evaporation-induced phase separation process, thermoplastic polyurethane is first precipitated to form a porous framework, and then CNCs are directionally enriched and deposited on the pore wall surface, thereby constructing a highly exposed three-dimensional conductive network and obtaining a monolithic integrated flexible strain sensor.

The application discloses a kind of oil-water two-phase microchannel separation method and microchannel separation device.The microchannel separator device of the application includes upper cover plate, lower cover plate and micro-separator-1, micro-separator-2 sealed and installed between upper cover plate, lower cover plate in sequence.The method of the application uses a kind of microchannel separation device, using the surface properties and size confinement effect of microchannel, oil-water two-phase can be separated quickly and efficiently in microchannel, the separation process is continuous and controllable, improves the separation efficiency of oil-water system, realizes 100% separation selectivity under high feed rate, can realize the intensification and equipment miniaturization of oil-water two-phase separation process in chemical separation technology field.

The invention provides a high-solid-content polycarboxylic acid water reducing agent and a preparation method thereof, and belongs to the field of water reducing agent preparation.The preparation method comprises the steps that the pH value of a polycarboxylic acid water reducing agent mother solution is adjusted to range from 4 to 5.2, inorganic salt is added under the constant-temperature stirring condition to achieve phase separation, standing layering and centrifugal treatment, an obtained enriched phase is subjected to vacuum evaporation concentration, and the high-solid-content polycarboxylic acid water reducing agent is obtained. Compared with the prior art, the polycarboxylate superplasticizer with the required solid content is prepared by performing phase separation process treatment on the polycarboxylate superplasticizer with the low solid content. Effective separation of effective components and water is achieved, loss of product mass is reduced, energy consumption in the production process is reduced, and the method can be suitable for industrial large-scale production. In addition, the prepared polycarboxylic acid water reducer has good water reducing and slump retaining properties and the like.

The invention discloses an anti-calcification heart valve prosthesis and preparation thereof, and particularly relates to the field of heart valve prosthesis application. The preparation method comprises the following steps: soaking a bacterial nano cellulose membrane (BNC membrane) in a polyvinyl alcohol (PVA) solution, and then carrying out freezing phase separation after-treatment, thereby obtaining the bacterial nano cellulose membrane. The preparation method comprises the following steps: preparing a film-shaped BNC material; soaking the BNC membrane with the moisture removed in a polyvinyl alcohol solution; performing phase separation treatment on the BNC membrane containing the polyvinyl alcohol solution; removing residual impurities on the surface of the composite membrane; suturing the artificial heart valve prosthesis; according to the preparation method, the thickness of the BNC membrane can be reduced, so that the thickness of the composite membrane is reduced, the mechanical property, anticoagulation and anti-calcification properties of the composite membrane are improved, and the preparation method has great application potential in the field of artificial heart valves.

The invention discloses a passive radiation cooling super-hydrophobic composite film based on a bionic water strider leg structure and a preparation method and application thereof, and belongs to the technical field of functional materials.The preparation method comprises the following steps that after a template with micron-sized taper holes is soaked in an alcoholic solution of silane, P (VDF-HFP) mixed colloid is evenly spread on the template, and a composite film is obtained; and carrying out phase separation and curing to obtain the passive radiation cooling super-hydrophobic composite film. The P (VDF-HFP) mixed colloid is prepared from 0.5 wt% of nano aluminum oxide powder and 0.5 wt% of nano hydroxyapatite powder. On the basis of a bionic water strider leg structure, a P (VDF-HFP) mixture containing nanometer aluminum oxide and nanometer hydroxyapatite is combined, and the composite film with the super-hydrophobic performance, the anti-icing performance and the passive refrigeration effect is obtained. The obtained composite film can be applied to the fields of passive radiation cooling, surface protection, surface self-cleaning, deicing and anti-icing and the like, the passive radiation refrigeration capacity in a polluted environment can be effectively improved, and the overall energy efficiency and sustainability of a system in a low-temperature environment are enhanced. And the energy-saving and cooling effects are achieved with lower cost and better effects.

The present application relates to a composite diaphragm, and a preparation method therefor and the use thereof. The composite diaphragm comprises a three-dimensional porous support layer and a membrane material, wherein pores of the three-dimensional porous support layer are filled with the membrane material; the three-dimensional porous support layer comprises fiber filaments and / or a fiber cloth, and the fiber filaments and / or fiber filaments constituting the fiber cloth are hydrophilic fiber filaments and / or roughened fiber filaments. The composite diaphragm forms an elastic collapse-resistant support framework by means of multi-layer stacking, interweaving and winding of the fiber filaments, which improves the compression strength of the diaphragm; the treated fiber filaments can increase their contact with a casting solution, and the casting solution and the fiber network are interactively filled, which increases the contact volume between a liquid membrane and a phase separation non-solvent and delays the phase separation process during solidification so as to form a uniform sponge microporous dense structure, such that the formation of large finger-shaped through holes is inhibited, thereby facilitating the blocking of gas passage and improvement to the chemical stability. The casting solution is uniformly distributed in the fiber framework, and the membrane material is firmly anchored by the three-dimensional fiber network after solidification, such that the mechanical stability of the diaphragm is improved.

The invention provides brown milk skin layered yoghurt and a preparation method thereof, and relates to the technical field of yoghurt, the brown milk skin layered yoghurt comprises 80-90 parts of raw milk, 1-10 parts of cream, 0.6-1.2 parts of a compound stabilizer, 4-10 parts of sugar, and 0.01-0.05 part of a strain, the brown milk skin layered yoghurt is finally prepared through the processes of primary burdening of raw milk and sugar, high-temperature cooking, secondary burdening of residual raw materials, high-speed shearing, homogenization, sterilization, rapid cooling, inoculation, re-heating, fermentation, refrigeration and after-ripening. In the preparation process, Maillard reaction is promoted through high-temperature cooking, and controllable browning is realized; cream is fully emulsified through high-speed shearing, emulsified particles are dispersed through low-pressure homogenization, and the cream particles can be gathered and solidified at a proper speed in the fermentation process; and the subsequent rapid cooling and re-heating steps after pasteurization effectively control the protein solidification and phase separation process, finally form a layered structure with stable layers and fine texture, and improve the appetite and interestingness at the same time.

The invention discloses a composite electrostatic spinning fiber diaphragm for a high-stability supercapacitor and a preparation method of the composite electrostatic spinning fiber diaphragm. The diaphragm comprises a high-stability oil-soluble polymer as a fiber skeleton; the high-ionic-conductivity water-soluble polymer is used as an ion transmission enhancing component; and water nanoparticles are not generated in the reaction process with hydrofluoric acid. The polymers are dispersed in a mixed solvent capable of dissolving the two polymers at the same time, electrostatic spinning is carried out, and the graded porous nanofiber membrane is obtained through the phase-induced separation process induced by solvent volatilization. Nanoparticles can be introduced through a deposition loading method or a blending spinning method, and the nanoparticle / polymer composite electrostatic spinning fiber diaphragm with high porosity, high specific surface area and high ionic conductivity is prepared. The composite electrostatic spinning fiber diaphragm has the advantages that the composite electrostatic spinning fiber diaphragm is good in stability under the conditions of high working voltage and high temperature, HF corrosion and gas expansion can be effectively inhibited, and therefore the internal resistance stability, the capacity retention ratio and the cycle life of the supercapacitor are remarkably improved.

The utility model relates to the technical field of split-phase time measuring equipment, in particular to a split-phase time measuring device which comprises a supporting and positioning system, the supporting and positioning system is used for supporting and positioning a sample and shooting equipment, and the supporting and positioning system comprises a horizontal sliding rail, a vertical sliding rod, a first sliding base and a second sliding base; the weighing timing system is used for detecting the placement of the sample and automatically starting timing; the shooting system is used for automatically recording the phase splitting process and comprises a camera and a background plate; the supporting and positioning system ensures that the relative positions of the sample and the shooting system are fixed. In the split-phase time measuring device, the weighing timing system accurately senses the placement and evacuation of a sample through the pressure sensor, and the singlechip automatically controls the timer and the shooting system to start and stop after receiving a signal, so that the accuracy of the split-phase time measurement is ensured. The automatic monitoring and recording system reduces human intervention, so that the test result is not influenced by subjective judgment of experimenters, and the test repeatability is improved.

The invention belongs to the technical field of waste liquid resourceful treatment, and particularly relates to a phase separation and recovery device for polyacrylonitrile spinning dimethyl sulfoxide-containing waste water. Comprising a transpiration multi-section type combined pipeline which comprises a continuous S-shaped flow channel formed by alternately connecting vertical sections and horizontal sections; a heat supply system; and each condensation recovery device is connected with the corresponding horizontal section. By adopting the S-shaped transpiration multi-section combined pipeline, transpiration, separation and condensation are integrated, the space utilization rate is high, and the process is continuous. A pneumatic device is arranged in the pipeline, so that gas flow conveying in a specific direction is realized, and the conveying flow of a gas-fog mixture can be adjusted; through the multi-stage gradient heating combination including external heating and inert gas mixing heating, the heating efficiency is high, and the phase separation process can be more accurately controlled; the design of a condensation recovery device is matched, so that the separation efficiency of DMSO and water and the product purity are effectively improved.

The invention discloses a preparation method of a viscosity-controllable high-strength and high-toughness bio-based reactive polyurethane coating which is firstly subjected to chain extension and then crosslinked. According to the method, directional regulation and control of chain growth and cross-linking reaction are realized by regulating and controlling the molecular weight and viscosity of the prepolymer. According to the bio-based reactive polyurethane coating, diisocyanate, a cross-linking agent and bio-based polyols with different molecular weights are used as raw materials to synthesize different prepolymers with free-NCO content, viscosity and molecular weight, and the prepolymers are mixed with polyols and then cured in situ to form a film under the medium-free condition. According to the regulation and control method, the reaction process of bio-based reactive polyurethane film forming is regulated through the molecular weight and viscosity of a prepolymer, and the feasibility of the regulation and control method is verified through the time-temperature equivalence principle. The result shows that the controllable adjustment of the chain extension-gel-phase separation process of the medium-free system polyurethane is realized, and the controllable adjustment of the reactive polyurethane coating in the processing process is realized.

The invention relates to the technical field of carbon dioxide trapping, in particular to a phase change absorbent for trapping carbon dioxide in waste gas and a using method thereof, and the phase change absorbent is obtained by mixing a primary and secondary amine absorbent, a tertiary amine absorbent, a phase splitting accelerant and water. According to the phase-change absorbent for capturing carbon dioxide in waste gas, the phase-separation accelerant is compounded, so that the phase-change phenomenon in the phase-separation process is more stable, the service life of the phase-change absorbent for capturing carbon dioxide in waste gas is prolonged, and meanwhile, the phase-change absorbent is high in capturing rate, large in absorption capacity and good in absorption effect; the invention further provides a using method of the phase change absorbent for capturing carbon dioxide in waste gas, the carbon material desorption accelerant is added in the desorption process, the desorption amount and the desorption rate can be remarkably increased, desorption of CO2 can be more rapidly promoted, and therefore the desorption time is greatly shortened, the treatment efficiency is improved, and regeneration energy consumption is reduced.

The application discloses a three-phase separation device and equipment for sewage anaerobic treatment, which is used for a UASB reactor, and comprises multiple layers of gas collection hoods arranged in the up-down direction, and spacing adjusting devices for controlling the layer spacing of the gas collection hoods, wherein the spacing adjusting devices comprise sensing devices for sensing the sewage condition in the UASB reactor, and the spacing adjusting devices feed back control the layer spacing of the gas collection hoods according to the sensing information of the sensing devices. By arranging the multiple layers of gas collection hoods with the dynamically adjustable layer spacing, the stability and adaptability of the three-phase separation process of the UASB reactor can be improved. The sensing devices are used for sensing the sewage flow speed and working condition changes in the reactor in real time, and the centrifugal lifting mechanism and the rack-gear linkage driving are used for synchronously adjusting the spacing between the layers of gas collection hoods, so that the backflow gap width can automatically match the change of the ascending water flow speed.

This application relates to a separator for alkaline batteries, its preparation method, and its application, belonging to the field of electrochemical device technology. It includes a porous base membrane and a gel precursor layer coated on at least one surface of the porous base membrane. By introducing a phase separation initiator that can be triggered by a specific concentration of alkaline electrolyte, the gel precursor layer coated on the base membrane undergoes in-situ phase separation only after battery electrolyte injection. This integrates the most complex porous structure forming step into the battery assembly process, simplifying the separator's manufacturing process. More importantly, this in-situ phase separation process allows the polymer matrix to form a gel functional layer with a three-dimensional interconnected pore structure at the electrode interface under liquid-phase mass transfer and thermodynamic drive. This achieves molecular-level interpenetration and conformal fusion with the electrolyte and electrode surface microstructure, reducing solid-solid interface contact impedance and constructing continuous, uniform, and efficient ion transport channels, thereby improving the battery's discharge capacity and overall electrochemical performance.

Disclosed herein is a method for recording a grating structure and the resultant grating structure. In one example, the method includes: depositing a holographic mixture containing a mixture of monomer and inert material onto a first substrate; exposing the holographic mixture to form a nanostructure including polymer-rich and inert-material rich regions using a holographic exposure phase separation process; removing the inert material from the inert material rich regions to form a grating including polymer rich regions and regions containing a residual polymer network; applying an ashing process to the regions containing a residual polymer network to form an ashed grating comprising polymer-rich regions and air regions; depositing a coating material onto the ashed grating to form a coated grating where the coating material backfills the air regions and overcoats the polymer-rich regions.

The application discloses a partially miscible solution liquid phase equilibrium test system and a test method thereof. The test system comprises a solution supply module, a temperature regulation module, a phase separation module and a test sampling module. The solution supply module comprises a heavy phase solution storage tank, a light phase solution storage tank and a metering pump. The phase separation module comprises a phase separator and a circulating pump. The outlet of the metering pump is connected with the inlet of the circulating pump. The temperature regulation module is used for regulating the temperature of the solution entering the phase separator. The outlet of the circulating pump is connected with the inlet of the temperature regulation module. The outlet of the temperature regulation module is connected with the solution inlet of the phase separator. The test sampling module comprises a light phase flow meter, a light phase densimeter, a light phase flow regulating valve, a light phase sampling pipe, a heavy phase flow meter, a heavy phase densimeter, a heavy phase flow regulating valve and a heavy phase sampling pipe. The light phase solution outlet of the phase separator and the heavy phase solution outlet of the phase separator are respectively connected with the inlet of the circulating pump. The test system can collect the phase separation process parameters in real time, and improves the test efficiency and precision.

This invention discloses a multi-stage oil-water separation device and method based on porous media. The device comprises a cover plate, separation chips, a flow guide plate, and porous media installed between the separation chips. This method utilizes the hydrophilicity / hydrophobicity and dimensional structure of the porous media to achieve selective separation of oil and water components. The design of the flow guide channels on the flow guide plate enables multi-stage connection of the oil-water separation device, increasing the separation load and allowing for scale-up of the device, achieving highly efficient oil-water separation. During continuous separation, the oil and water phases can be rapidly and efficiently separated within the device, achieving 100% separation selectivity even at high feed rates. The separation process is more easily controlled, effectively improving the separation efficiency of the oil-water system. This invention enables enhanced oil-water two-phase separation processes and equipment miniaturization in the field of chemical separation technology, significantly improving the system's separation efficiency.

A method for preparing a bowl-shaped microgel belongs to the field of microgel technology. The specific steps of the preparation method are as follows: 1. Solution preparation: Weigh cetyl polyethylene glycol / polypropylene glycol-10 / 1 dimethylsiloxane (EM 90) and hexadecane to prepare a hexadecane solution containing EM 90; weigh PEGDA, LAP, and polysaccharides to prepare an aqueous solution containing PEGDA, LAP, and polysaccharides; 2. Microdroplet preparation; 3. Microgel preparation; 4. Microgel washing. The oil and surfactant used in this invention are inexpensive and readily available, and the preparation method is simple, avoiding the changes in the microgel matrix caused by the osmotic pressure of the aqueous two-phase phase during the phase separation process in microgels based on the phase separation principle. By incorporating polysaccharides to adjust the composition and structure of the microgel prepolymer solution, bowl-shaped microgels with different matrices can be obtained. The microgels prepared by this invention are expected to be used for disease diagnosis and treatment.

The invention discloses a preparation method and application of a bio-based furan polyurethane honeycomb porous material. The bio-based furan polyurethane honeycomb porous material disclosed by the invention is prepared from bio-based polyether polyol / furan modified polyester polyol, dihydroxyl-terminated polysiloxane, diphenylmethane diisocyanate and a functional additive through step-by-step polymerization and wet-process solvent replacement. According to the invention, by introducing bio-based sourced compounds including furan modified polyester polyol, furan-2, 5-diformylhydrazine and poly trimethylene ether glycol, dihydroxyl-terminated polysiloxane is utilized to enhance an environmental barrier, and polyvinyl alcohol and polyamide wax are combined to regulate and control a phase separation process, so that the phase separation efficiency is improved; and finally, the bio-based furan polyurethane honeycomb porous material with a bionic honeycomb porous structure, extremely soft skin-friendly touch feeling and excellent rebound resilience is developed.