299 results about "Non solvent" patented technology

The invention provides an alkaline electrolytic water hydrogen production diaphragm based on zirconium oxide modification, the alkaline electrolytic water hydrogen production diaphragm comprises a support layer and a hydrophilic modified coating on the support layer, the hydrophilic modified coating is obtained by coating the support layer with a casting liquid prepared from modified zirconium oxide particles, a film-forming polymer and an organic solvent and then carrying out non-solvent induced phase inversion, the modified zirconium oxide particles are prepared by adding micron-sized zirconium oxide and alkali liquor into a ball mill for ball milling, and the particle size of the zirconium oxide subjected to ball milling treatment is 20-100nm. According to the method, the structure of the micron-sized zirconium oxide particles is regulated and controlled by combining a ball milling-alkali etching synchronous process. Through combination of ball milling treatment and alkali etching treatment, the dispersion degree and the reaction opportunity of the zirconium oxide powder can be effectively improved, and the efficiency of the etching process is remarkably improved. The obtained modified zirconium oxide particles endow the diaphragm with excellent hydrophilicity, alkali resistance and OH <-> ion conduction performance, and the diaphragm has excellent performance when being used as an alkaline electrolytic water hydrogen production diaphragm.

The invention relates to a preparation method of a radiation refrigeration coating with super-hydrophobic performance. According to the method, hydrophobic modified nano-particles and nano-particles with high reflectivity and high emissivity are blended in an adhesive solution, an adhesive is separated out to form a micron-sized aggregate through a non-solvent induced phase separation technology, and meanwhile, various nano-particles are uniformly coated on the surface of the aggregate, so that a stable suspension system is prepared. The radiation refrigeration coating has excellent radiation refrigeration performance, excellent super-hydrophobicity and good durability, the preparation process is simple, the radiation refrigeration coating is suitable for large-scale industrial application of outdoor scenes such as building outer walls, and a new technical solution is provided for developing efficient and lasting radiation refrigeration materials.

The invention discloses a polyether-ether-ketone-based composite material with low reflection and high electromagnetic shielding effectiveness and a preparation method of the polyether-ether-ketone-based composite material, and belongs to the technical field of electromagnetic shielding materials. The problems that an existing electromagnetic shielding material is high in reflection coefficient, insufficient in shielding effectiveness, poor in high temperature resistance and corrosion resistance and difficult to adapt to severe environment service are solved. The composite material is composed of a porous conductive substrate and an asymmetric conductive layer. Wherein the porous conductive substrate is formed by blending a soluble ketimine type polyether-ether-ketone solution and a conductive filler suspension and then carrying out non-solvent induced phase separation and acidification reduction reaction, the electric conductivity is 2.8 * 10 <-4 >-0.1839 S / cm, and the porosity is 80%-90%; the asymmetric conductive layer is plated on the surface of one side of the porous conductive substrate, and the asymmetric conductive layer is made of nickel-phosphorus alloy. The composite material significantly reduces the electromagnetic wave reflection coefficient through an absorption-reflection-reabsorption mechanism, has high electromagnetic shielding effectiveness and excellent high temperature resistance and corrosion resistance, and is suitable for serving in a severe environment.

The invention discloses a mixed matrix membrane for efficient oxygen and nitrogen separation and a preparation method and application thereof. The mixed matrix membrane comprises a polymer continuous phase and an MOF filler uniformly dispersed in the polymer continuous phase, the MOF filler can separate nitrogen and oxygen, and the surface of the MOF filler is modified by the silane coupling agent, so that the MOF filler is well compatible with a polymer, and the oxygen-nitrogen separation effect is improved. The polymer solution and the MOF filler dispersion liquid are mixed, the mixed matrix membrane is prepared through the non-solvent induced phase separation method, and the method has the advantages of being simple in reaction condition, high in efficiency, easy to amplify and the like and has wide engineering prospects.

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 application belongs to the technical field of membrane separation materials, and discloses an ultrahydrophilic oil-water separation membrane, a preparation method and application thereof, and comprises the following steps: 2-(2-bromoisobutyryloxy)ethyl methacrylate monomers are prepared from 2-hydroxyethyl methacrylate and 2-bromoisobutyryl bromide, and a polymer with an atom transfer radical polymerization initiator is prepared through a free radical polymerization reaction; the polymer with the atom transfer radical polymerization initiator and polyacrylonitrile are dissolved into a solvent, and a PAN / P(AN-g-BIEM) blended membrane is prepared through a non-solvent induced phase separation method; and a hydrophilic polymer brush is grafted to the surface of the PAN / P(AN-g-BIEM) blended membrane to obtain the ultrahydrophilic oil-water separation membrane; the ultrahydrophilic oil-water separation membrane prepared by the application has a high separation flux, excellent oil-water separation efficiency and separation performance for different oil-in-water emulsions.

Disclosed in the present invention are a super-hydrophobic polylactic acid film having long-lasting self-cleaning performance and a preparation method therefor, belonging to the technical field of materials. The method comprises: by using polylactic acid as a main material, polymerized rosin as a pore-foaming agent and toluene as an extraction agent, performing non-solvent induced phase separation to prepare a polylactic acid porous film; and then soaking same in a hydrophobic substance solution so as to obtain the super-hydrophobic polylactic acid film. The super-hydrophobic polylactic acid film obtained in the present invention has an initial water contact angle reaching 150 degrees or above, and has super-hydrophobicity and a remarkable self-cleaning effect. In addition, after a plurality of times of rubbing, 94% or above of the water contact angle of the film can be kept and the self-cleaning property is still remarkable. Therefore, said film has wide application prospects in the fields such as self-cleaning, fluid drag reduction, oil-water separation and icing and corrosion prevention.

The invention relates to a poly (ether) sulfuryl block copolymer integrated nanofiltration membrane and a preparation method and application thereof, and belongs to the technical field of high polymer materials, and the preparation method comprises the following steps: adding an additive with reaction active sites into a membrane casting solution, adding another substance capable of carrying out a cross-linking reaction with the additive in the membrane casting solution into a coagulating bath, and carrying out a cross-linking reaction with the additive in the membrane casting solution to obtain the poly (ether) sulfuryl block copolymer integrated nanofiltration membrane. Preparing a flat sheet membrane through a non-solvent induced phase separation technology; the compact hollow fiber nanofiltration membrane is integrally prepared on line by using a double-layer spinning nozzle through dry spraying and wet spinning by taking a membrane casting solution added with a monomer with reaction activity as an inner layer and taking a solution containing another substance capable of being subjected to cross-linking reaction with the monomer with reaction activity in the membrane casting solution as an outer layer. The method disclosed by the invention has the characteristics of simple process, simplicity and convenience in operation, short preparation period and environmental friendliness, and compared with a traditional membrane preparation process, the method is more favorable for preparing the high-flux and high-interception nanofiltration membrane.

The application relates to a preparation method of a hollow fiber membrane composite thermal insulation material, which comprises the following steps: adding 18-22% of polyurethane, 4-8% of polyethylene glycol 2000 and 72-76% of N,N-dimethylacetamide into a spinning reaction kettle to mix, stir and defoam to prepare homogeneous casting solution; based on a non-solvent induced phase separation method, the homogeneous casting solution is coated on the surface of a polyester braided tube through a spinneret by adopting a concentric circle composite spinning technology, is gathered on a spinning wheel after a coagulation bath to form a reinforced polyurethane hollow fiber membrane assembly which is arranged in parallel and obliquely crosses and is mutually bonded, and the fiber membrane assembly is hot-pressed to prepare the hollow fiber membrane composite thermal insulation material under the conditions of a temperature of 60-150 DEG C and a pressure of 120-470 MPa. Since the coating layer and the braided tube are both through porous structures, the prepared composite material has good air permeability.

A method for producing a 3D porous sorbent structure may include building a 3D porous green body from a build material including a solvent, an inorganic porous sorbent material, and an organic binder material dissolved in the solvent. The build material is deposited as filaments in a plurality of stacked layers to obtain the 3D porous green body, and at least some of the filaments are spaced apart; inducing phase inversion of the body by exposing it to a non-solvent for the organic binder material. The solidified body is dried to obtain the 3D porous sorbent structure. The build material has 30-70% by weight of the inorganic porous sorbent material and 5-30% by weight of the organic binder material, based on the total weight of the build material, the 3D porous sorbent structure comprising at least a portion of the organic binder material.

The invention provides a preparation method and application of a PVDF (polyvinylidene fluoride)-based hollow fiber nanofiltration membrane with piezoelectric responsiveness. Specifically, firstly, PVDF, an inorganic pore-foaming agent, a carbon-based conductive material with a piezoelectric property, an organic reactive monomer (TMC) and an organic solvent are prepared into a uniform viscous dispersion liquid according to a certain proportion, then polyamine molecules and water are mixed according to a certain proportion to serve as a core liquid, finally, spinning is conducted through a non-solvent induced phase separation-interfacial polymerization synchronous preparation technology (NIPS-IP), and the PVDF / TMC composite material is obtained. And the PVDF hollow fiber nanofiltration membrane with piezoelectric responsiveness is prepared in one step. The method is simple and convenient to operate, and the prepared nanofiltration membrane is high in beta-PVDF crystal form content (the relative proportion of the beta crystal form is not lower than 90%). In addition, a carbon-based conductive material which can form a continuous phase and has a piezoelectric property is added into the dispersion liquid, so that the content of a beta-PVDF crystal form can be further increased, a continuous path can be formed in the membrane after the dispersion liquid is combined with PVDF, the surface charge density of the membrane is remarkably improved under the driving of nanofiltration pressure, and an internal electric field is generated in a membrane body; the selective separation performance of multivalent / monovalent mixed ions is enhanced through the triple synergistic effect of size screening, surface strong electrostatic interaction and internal electric field strengthening.

The invention belongs to the technical field of adhesive tapes, and particularly relates to a UV protective film for packaging substrate cutting and a preparation method thereof.The UV protective film comprises a PO base material layer, a non-solvent type UV viscosity-reducing adhesive layer and a PET release layer, and the non-solvent type UV viscosity-reducing adhesive layer is located between the PO base material layer and the PET release layer; the non-solvent type UV viscosity-reducing adhesive layer comprises the following components: an acrylate soft monomer, an acrylate hydroxyl monomer, an acrylate hard monomer, an acrylate monomer with a space crosslinking site, n-dodecanethiol, a photoinitiator and a photosensitive multifunctional group acrylate monomer. The non-solvent type UV viscosity-reducing adhesive layer is introduced, so that the preparation process is environment-friendly and free of solvent volatilization, the UV protective adhesive is high in viscosity and excellent in impact resistance before UV irradiation, the adhesive layer is stably attached before cutting, and the UV protective film is stripped at low stress and free of residual adhesive after irradiation.

The present invention discloses a polyethersulfone membrane with low protein adsorption function and its preparation method. The polyethersulfone membrane comprises the following raw materials according to mass percentage: 10-30% of polyethersulfone, 3-15% of amphiphilic copolymer, 2-10% of pore former, 0.5-15% of non-solvent, and 55-75% of solvent. Through a carefully designed formulation and preparation process, the present invention successfully prepares a polyethersulfone membrane with low protein adsorption function. The addition of the amphiphilic copolymer P(PVP-r-PDMS) not only enhances the hydrophilicity and protein adsorption resistance of the membrane, but also realizes the optimization of the membrane structure through the fine regulation of the RTIPS method. Finally, a polyethersulfone hollow fiber membrane with excellent anti-fouling performance and high permeability is obtained, which has broad application prospects in the fields of hemodialysis, drug filtration, food industry, etc.

The invention belongs to the technical field of hydrogel high polymer materials, and particularly relates to a preparation method of high-strength and high-conductivity nano hydrogel and the hydrogel prepared by the preparation method. The preparation method of the hydrogel provided by the invention comprises the following steps: firstly, dissolving polyvinyl alcohol in a good solvent dimethyl sulfoxide of polyvinyl alcohol, and keeping an extended conformation and a staggered network; then, a poor solvent ethyl acetate of polyvinyl alcohol is introduced for non-solvent quenching, so that in-situ phase separation is promoted, polymer chains are drawn close, and interaction between the chains is enhanced; finally, neutral solvent water of polyvinyl alcohol is introduced for solvent replacement, the polymer microphase is evolved into nanofibers, and the polyvinyl alcohol hydrogel with nanoscale pores is formed. The hydrogel prepared by the invention has relatively high fracture stress strain and ionic conductivity, and effectively solves the problems of easy fracture, poor conductivity and the like of the traditional ionic thermoelectric gel.

The invention discloses a polyether-ether-ketone bicontinuous porous coating or membrane based on non-solvent induced phase separation and a preparation method thereof.The preparation method comprises the following steps that polyether-ether-ketone is dissolved in a mixed solution of methanesulfonic acid and concentrated sulfuric acid, a solution A is obtained, hydroxide, oxide or salt of metal is added into the solution A, uniform mixing is conducted, and mixed slurry is obtained; the mass ratio of the polyether-ether-ketone to the hydroxide, oxide or salt of the metal is (0.5-4): 1; and coating the surface of a substrate with the mixed slurry, placing the substrate in wet air or water for a set time, carrying out induced phase separation, and cleaning after complete curing. Alkali or metal salt is used as an additive, the starting point and path of components in the phase separation process can be regulated and controlled, then the formation and size of a bicontinuous structure are controlled, and a highly-controllable coating structure is achieved.

The invention provides a hollow ultrafiltration membrane and a preparation method and application thereof.In the preparation method, a non-water-soluble ether compound is adopted as a pore opening agent, in the non-solvent-induced phase separation (NIPS) process, a membrane casting solution enters a coagulating bath for phase separation after being extruded, the ether compound is migrated due to the fact that mass transfer cannot be conducted between the ether compound and water, and the membrane casting solution enters the coagulating bath for phase separation; the ether compound is dissolved out through post-treatment, and the composite structure hollow fiber ultrafiltration membrane with nano-scale open pores in both the inner surface and the outer surface and a sponge body structure in the interior is prepared. In an actual filtering process, pollutants are intercepted for multiple times by virtue of nano-scale open pore channels on the surface of the membrane and an internal sponge body structure, so that the use requirements of high pure water flux and high interception efficiency are met. The retention rate of the obtained hollow ultrafiltration membrane on 50nm silicon dioxide particles is not less than 99%, and the pure water flux is not less than 600L / (m < 2 > hbar) (25 DEG C). And efficient and stable terminal filtering guarantee can be provided for an ultrapure water system.

The embodiment of the invention provides a carbon nanotube / fluorocarbon resin composite microsphere photo-thermal super-hydrophobic anti-condensation coating and a preparation method thereof.The preparation method comprises the steps that firstly, carbon nanotubes and fluorocarbon resin are evenly dispersed in a solvent, then a small amount of non-solvent water is added to enable a solution system to be subjected to phase separation, and carbon nanotube / fluorocarbon resin composite microsphere dispersion liquid is formed; and finally, spraying the carbon nanotube / fluorocarbon resin composite microsphere dispersion liquid, and curing to obtain the photo-thermal super-hydrophobic anti-condensation coating. The carbon nano tube is in a microsphere shape in the coating, so that a typical micro / nano coarse structure is obtained on the surface, the water drop contact angle of the coating is as high as 158 degrees, the icing delay time is as high as 434s, and the ice adhesion force is as low as 16kPa; under the irradiation of sunlight, the temperature of the coating can be increased to 54.5 DEG C within 10 minutes under the photo-thermal action of the carbon nanotubes, so that the melting of ice is accelerated.

The invention discloses a double-layer foaming porous polishing pad as well as a preparation method and application thereof, and relates to a double-layer pore structure chemical mechanical polishing pad, the upper part of a polishing layer of the polishing pad is provided with closely distributed finger-shaped pores, the average inner diameter is 0.17-0.25 mm, and the pore wall thickness of the finger-shaped pores is 15-20 microns; the lower part of the polishing layer is a sponge hole layer, and the average inner diameter of the sponge hole layer is 5-10 microns; the main body structure of the polishing layer is prepared from coating slurry comprising polyurethane resin, polyvinyl chloride resin and ethyl acetate in a coagulating bath through a non-solvent phase inversion method. The rebound rate of the polishing pad can be effectively improved by controlling the relative thickness of the double-layer holes of the polishing layer, the abrasion resistance of the polishing pad is remarkably improved through resin blending, the service life is prolonged, meanwhile, the hardness of the polishing layer is moderate, and product defects are effectively reduced. The polishing pad has excellent wear resistance and moderate hardness, the service life is remarkably prolonged, particle defects in the polishing process are reduced, and the polishing pad is suitable for a high-precision polishing process.

The present invention discloses a method for preparing a solvent-free water-based ink binder polyurethane, belonging to the technical field of water-based ink materials. In response to the problems of low solid content, poor stability, and poor adhesion in existing polyurethane emulsions, the present invention provides a method for preparing a solvent-free water-based ink binder polyurethane, comprising: preparing prepolymers of different particle sizes at a rotation speed of 1500 to 2000 rpm and direct addition of water, and at a rotation speed of 300 to 500 rpm and dropwise addition of water; then mixing the two prepolymers, methyl methacrylate, and an initiator, and subjecting the mixture to a free radical polymerization reaction to obtain the polyurethane emulsion. By controlling the rotation speed during the shearing process and the method of adding water, and then controlling the mixing ratio of prepolymers of different particle sizes, and adding a non-solvent-type diluent and introducing a HEA terminal crosslinking agent, the present invention obtains a polyurethane emulsion with a high solid content and a multivariate particle size distribution, significantly improving the performance of the polyurethane.

The application belongs to the technical field of composite membrane materials, and particularly relates to a preparation method and application of a super-hydrophilic composite membrane capable of removing various pollutants in water bodies; the preparation method comprises the following steps: preparing a bimetallic organic framework material FeZr-MOF through a one-step solvothermal method; dispersing FeZr-MOF powder in a suitable solvent, mixing, adding polyvinylidene fluoride and polyvinylpyrrolidone, stirring under water bath conditions at 30-80 DEG C, obtaining a uniformly mixed casting solution, and then preparing a FeZr-MOF / PVDF composite membrane through a non-solvent induced phase separation method after ultrasonic defoaming treatment; then, a polyaniline coating layer is in-situ polymerized on the surface of the composite membrane to obtain a PANI / FeZr-MOF / PVDF composite membrane. The super-hydrophilic composite membrane capable of removing various pollutants in water bodies has good effects in oil-water separation, removal of antibiotics and chromium ions in water and the like.

A photoresist composition comprising one or more non-solvent alkali-insoluble substrates present in a total amount exceeding 50% by weight based on the total solids content of the photoresist composition, and a nonpolymeric ionic photoacid generator compound comprising an anion and an iodonium or sulfonium cation, wherein the anion is defined by formula (1) as defined herein. [Formula 1] TIFF2026528972000047.tif49166(wherein b is an integer from 1 to 4, and at least one R) 1 (This is a group that is substituted with a halogen.) A photoresist composition comprising a nonpolymeric ionic photoacid generator compound and a solvent, as represented by [formula].

The invention discloses a compact ceramic film based on a phase transfer method, a preparation method of the compact ceramic film and a battery, and the preparation method of the compact ceramic film based on the phase transfer method comprises the following steps: preparing ceramic slurry which comprises ceramic powder, an organic polymer and an organic solvent; the ceramic slurry is subjected to tape casting to a preset thickness and then sequentially subjected to pre-drying, non-solvent spray curing, drying and sintering, and the compact ceramic thin film based on the phase transfer method is obtained. The preparation method of the compact ceramic thin film based on the phase transfer method provided by the invention replaces a traditional process of firstly coating a substrate and then immersing in a coagulating bath, and through precise control of pre-drying and non-solvent spraying, the defects of wrinkles and finger-shaped holes in the ceramic thin film are effectively avoided, and the compactness of the ceramic thin film is improved; therefore, the ionic conductivity and the heat transfer efficiency of the ceramic film are greatly reduced. In addition, the preparation method of the ceramic thin film is high in preparation efficiency and low in production cost.

The application discloses a kind of polymer porous membrane, its preparation method and application in turbidity removal pre-filtering, belong to the technical field of porous membrane preparation.Its technical scheme includes: when the non-solvent phase separation of film-forming polymer solution occurs and the separation layer is formed on the outer surface of polymer membrane, simultaneously, water-soluble coating layer polymer solution is coated on the surface of separation layer, to obtain polymer porous membrane;Film-forming polymer solution uses polysulfone polymer as film-forming base material, uses water-soluble chloride as porogen, uses nitrogen-containing organic matter as solvent;Coating layer polymer solution has porogen effect, and viscosity is 200-1000 mPa·s.The application is applied to turbidity removal pre-filtering, solves the technical problems that existing non-solvent phase separation technology is difficult to obtain large aperture, surface opening rate is high and easy to appear finger-shaped hole, has the characteristics of large aperture, surface opening rate is high, cross section is sponge hole.

A salt-philic solvent-phobic (SP2) polymer coating on a lithium anode, sodium anode, or a silicon anode selectively transports salt over solvent and is configured to promote salt-derived SEI formation on the anode. The SP2 coating can include a polymer backbone, a first side chain comprising a first moiety having salt affinity, and a second side chain comprising a second moiety immiscible with polar aprotic solvents.

The invention relates to the technical field of membrane separation, in particular to a composite ultrafiltration membrane based on blending modification and surface modification and a preparation method and application thereof. The method comprises the following steps: firstly, preparing a polydopamine functionalized multi-walled carbon nanotube through oxidation cross-linking auto-polymerization and adhesion of a dopamine compound in an aqueous solution; dissolving a film-forming polymer, a pore-foaming agent and the prepared polydopamine functionalized multi-walled carbon nanotube in an organic solvent, degassing, and preparing a blend film by adopting a non-solvent induced phase separation method; the prepared blended membrane is sequentially and alternately immersed in a tannic acid solution and an aluminum salt solution, a tannic acid-aluminum ion metal phenolic aldehyde network layer is formed on the surface of the blended membrane through a coordination-driven layer-by-layer self-assembly method, and the composite ultrafiltration membrane is obtained. The composite ultrafiltration membrane prepared by the invention has high flux, high selectivity and excellent anti-pollution performance, and is especially suitable for treating and recycling wastewater containing organic macromolecules such as protein, colloid and the like.

A photoresist composition comprising one or more alkali-insoluble, non-solvent base materials present in a combined amount of more than 50 wt% based on the total solids of the photoresist composition; a non-polymeric ionic photoacid generator compound comprising an anion and an iodonium or sulfonium cation, the anion being represented by formula (1); a photodegradable quencher, a basic quencher or a combination thereof and a solvent: where Ar 1 for a monocyclic or polycyclic aromatic C 3-60 -Group stands; L 1 L represents a single bond or one or more binary linkage groups. 1 is free of fluorine; Z 1 an anion-stabilizing group, wherein Z 1is designed in such a way that it forms an intramolecular non-covalent bond with the sulfonate anion group, forming a ring with 5 to 8 atoms; and the remaining substituents are defined as shown here.

The invention provides a cigarette flavor base formula sheet dosage data processing method, which comprises the following steps: carrying out component identification on a solvent component and a non-solvent component in a target cigarette flavor base formula sheet to obtain an identification result, according to a target standard sum, performing first difference value judgment on the sum of the dosages of different non-solvent components in the identification result, and according to a first difference value judgment result, correcting the target cigarette flavor base formula list to obtain a first correction result; correcting the first correction result according to a target precision requirement to obtain a second correction result; and according to the target standard sum, performing second difference judgment on the sum of the component dosages of the solvent component and the non-solvent component in the second correction result, and according to a second difference judgment result, performing polling correction on the second correction result to complete correction after a target difference is reached. The invention further provides a cigarette flavor base formula sheet dosage data processing device and electronic equipment.

A polymer film has a loofah-like structure. It has a fibrous framework structure formed by three-dimensional interwoven and interconnected polymer fibers and a three-dimensional interconnected network pore structure distributed in the fibrous framework structure. The polymer is an organic polymer and the fibrous framework structure is integrally formed by the polymer. The film has a volume porosity of from 50% to 95%. The film is obtained by means of a combination method for atomization pretreatment and non-solvent phase separation. The film can be used in the fields of gas filtration, liquid filtration, oil-water separation, adsorption materials, catalysis, pharmaceutical sustained release materials, anti-adhesion coatings, oil delivery and oil spill interception.

A photoresist composition comprising one or more non-solvent base-insoluble base materials present in a combined amount greater than 50 wt% based on the total solids of the photoresist composition; a non-polymeric ionic photoacid generator compound comprising an anion and an iodonium or sulfonium cation, wherein the anion is represented by formula (1); a photodecomposable quencher, a basic quencher, or a combination thereof; and a solvent, wherein Ar 1 is a monocyclic or polycyclic C 3‑60 aromatic group; L 1 is a single bond or one or more divalent linking groups, wherein L 1 contains no fluorine; Z 1 comprises an anion stabilizing group, wherein Z 1 is configured to form an intramolecular non-covalent bond with a sulfonate anion group to form a ring having 5 to 8 atoms; and the remaining substituents are as defined herein. (1)

The application discloses a polyketone filter membrane containing a composite pore structure and a preparation method thereof, and belongs to the technical field of organic filter membranes. Aliphatic polyketone is used as a main body resin, is uniformly mixed with an additive and a diluent dimethyl sulfoxide at 130-160 DEG C, and a filter membrane is prepared through a composite thermally induced phase separation method. The preparation method is simple, safe and environmentally friendly. The prepared membrane has the membrane structure characteristics of a non-solvent induced phase separation method and a thermally induced phase separation method, has a finger-shaped pore and a double-continuous net-shaped composite structure, and has a low price, good hydrophilicity and good solvent resistance. The aliphatic polyketone has a good application prospect in the field of membrane separation.