676 results about "Acetamide" patented technology

The present disclosure relates to pharmaceutically acceptable salts, cocrystals, and crystalline forms thereof, of a compound which is N—((S)-1-(3-(4-chloro-3-(methylsulfonamido)-1-(2,2,2-trifluoroethyl)-1H-indazol-7-yl)-6-(3-methyl-3-(methylsulfonyl)but-1-yn-1-yl)pyridin-2-yl)-2-(3,5-difluorophenyl)ethyl)-2- ((3bS,4aR)-5,5-difluoro-3-(trifluoromethyl)-3b,4,4a,5-tetrahydro-TH-cyclopropa[3,4]cyclopenta[1,2-c]pyrazol-1-yl)acetamide, which is useful in the treatment of a Retroviridae viral infection including an infection caused by the HIV virus.

The present invention relates to the field of the preparation of polyurethane elastic fibers, and relates to a preparation method for a bio-based polyurethane elastic fiber, comprising: preparing polyether polyol from sucrose, glycerol, dimethylamine and propylene oxide; adding a solvent, i.e., N,N-dimethylacetamide, and polyether polyol and polyisocyanate into a reaction tank, and adding p-Toluenesulfonyl semicarbazide and aluminum methylenebis(2,4-di-tert-butylphenoxy) phosphate to prepare a spinning solution; and subjecting the spinning solution to spinning and oil application by means of dry spinning technology to obtain the bio-based polyurethane elastic fiber. The present invention ensures that the properties of polyurethane elastic fibers do not deteriorate or are partially enhanced, while the cost and performance advantages are achieved.

The application discloses a preparation method of a hydrophilic oil-water separation anti-pollution membrane and the anti-pollution membrane and application thereof, and prepares MNRs material; the MNRs material is dispersed in dimethylacetamide, is uniformly stirred, polyvinylpyrrolidone is added, and stirring is continued, and a first mixture is obtained through ultrasonic treatment; the first mixture is mixed with polyvinylidene fluoride to obtain a second mixture, and the second mixture is stirred; the treated second mixture is dip-coated on a carrier, the dip-coated carrier is treated in deionized water to obtain an ultrafiltration membrane; the ultrafiltration membrane is soaked in a tea polyphenol solution with a Tris-HCl buffer solution, and is shaken to obtain the hydrophilic oil-water separation anti-pollution membrane. The hydrophilic oil-water separation anti-pollution membrane has excellent separation efficiency and flux recovery rate for four different oil-water mixtures of kerosene, gasoline, edible oil and n-hexane. The preparation process of the oil-water separation membrane is simple, the cost is low, and the reaction condition is mild; when the oil-water separation membrane is applied to organic wastewater separation, the oil-water separation membrane has the advantages of high efficiency, good removal performance and good recycling performance.

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.

The invention discloses a preparation method of a polyimide-boron nitride nanosheet heat-conducting composite film. The preparation method comprises the following steps: firstly, dispersing boron nitride nanosheets into N, N-dimethylacetamide containing poly (diallyldimethylammonium chloride) to prepare slurry; meanwhile, 4, 4 '-diaminodiphenyl ether reacts with pyromellitic dianhydride to prepare a polyamide acid solution. And mixing the two materials, forming a layered structure through vertical and horizontal temperature gradients by adopting a bidirectional freezing casting technology, and freezing by liquid nitrogen to obtain the aerogel in oriented arrangement. And performing hot pressing and step-by-step thermal imidization treatment to obtain the heat-conducting composite film. According to the method, the highly-oriented arrangement of boron nitride nanosheets is constructed through bidirectional freezing casting, and the composite film has excellent heat-conducting property and keeps good mechanical strength and flexibility in combination with the surface modification effect. The process is simple and controllable, and is suitable for the fields of flexible electronics, 5G heat dissipation, battery thermal management and the like.

The invention discloses a compound fluralana external preparation for dogs, a preparation method and application, belongs to the technical field of veterinary drugs, and solves the problems that an existing preparation is poor in skin surface permeability, a solvent is easy to volatilize, and use experience and drug effect exertion are influenced. The preparation is prepared from the following raw materials: fluralana, moxidectin, ethyl butylacetamidopropionate and N, N-dimethylformamide. The preparation method comprises the following steps: adding N, N-dimethylacetamide, acetone, an auxiliary adjuvant, a transdermal penetration enhancer, an antioxidant and a surface film-forming agent; according to the invention, the combination of the fluralab and the moxidectin can play a synergistic effect and expand an anti-parasitic spectrum so as to achieve an internal and external driving effect; both the fluralab and the moxidectin belong to high-fat-soluble substances, parasites can be quickly repelled and killed by adding novel adjuvant natural parasite expelling ingredients, and meanwhile, the skin permeability can be improved by adding the efficient transdermal penetration enhancer, and the risk that medicine residues are licked by pets is reduced.

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and compounds of Formula 2 are present in the formulation in specific ratios relative to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desired silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

Silicone hydrogel contact lens formulations are described herein. The formulation has a silicone component and a silicone-free component. The silicone component comprises two or three compounds represented by a formula 1, a formula 2 or a formula 3. The silicone-free component includes a methacrylate component and an N-vinyl amide component. The methacrylate component is prepared from hydroxybutyl methacrylate (HOB) and isobornyl methacrylate (IBM). And the N-vinyl amide component is prepared from N-vinyl N-methyl acetamide. When compounds of Formula 1 and compounds of Formula 2 are present in the formulation in specific ratios to each other, specific amounts of HOB and IBM are provided to achieve specific ratio results in desirable silicone hydrogel contact lenses. Silicone hydrogel contact lenses are also described.

The invention relates to a nano bismuth agent for preventing and / or treating gastritis infection as well as a preparation method and application thereof, the preparation method comprises the following steps: respectively dissolving soluble bismuth salt and a sulfur-containing compound, mixing, and reacting to obtain the nano bismuth agent after the reaction is finished, the sulfur-containing compound is any one or a combination of at least two of thioamino acid, vitamin B1, thioacetamide, sodium sulfide, sodium thiosulfate, bovine serum albumin, whey protein, ovalbumin or metallothionein. The prepared nano bismuth agent has efficient antibacterial performance, shows an excellent curative effect which is two orders of magnitude higher than that of an existing bismuth complex on clinically separated drug-resistant helicobacter pylori, and does not further induce increase of drug resistance of the helicobacter pylori.

The invention relates to a polyimide composite film for realizing high-dispersion carbon nanotubes through chemical anchoring and a preparation method of the polyimide composite film, which are used for solving the problems that carbon nanotubes in the existing carbon nanotube / polyimide composite material are easy to agglomerate, poor in interfacial compatibility and low in grafting efficiency. The preparation method comprises the following steps: S1, ultrasonically dispersing aminated carbon nanotubes in anhydrous dimethylacetamide to obtain a stable dispersion liquid; s2, slowly dropwise adding pyromellitic dianhydride into the stable dispersion liquid under an ice bath condition, and enabling the pyromellitic dianhydride to react with the aminated carbon nanotubes under the assistance of triethylamine to form anchor points; s3, adding a diamine monomer 4, 4 '-diaminodiphenyl ether, and gradually adding the residual pyromellitic dianhydride to carry out in-situ polymerization; and S4, preparing a wet film by adopting a curtain coating or spin coating method, and carrying out step-by-step thermal imidization at 80-300 DEG C to obtain the covalent composite film. Controllable covalent connection of the carbon nanotubes and pure polyimide chain segments can be achieved on the molecular level, and therefore the composite film with excellent heat conductivity, electromagnetic shielding performance and mechanical performance is obtained.

The application discloses a preparation method of superfine nanofiber antibacterial and mosquito-repellent high-efficiency low-resistance air filtration membrane, which comprises the following steps: dissolving cellulose acetate, cinnamyl aldehyde and polyhexamethylene biguanide hydrochloride in a solvent, fully stirring to form a spinning solution, wherein the solvent is a mixed solution of acetone, N, N-dimethylacetamide and water; and performing electrostatic spinning on the spinning solution to obtain the superfine nanofiber antibacterial and mosquito-repellent high-efficiency low-resistance air filtration membrane. The manufacturing steps of the application are simple and not complicated; cellulose acetate has excellent mechanical properties, hydrophobicity and thermal stability, and is an ideal material for air filtration membrane; the liquid property of cinnamyl aldehyde can effectively dilute cellulose acetate, so that the overall binding energy of the mixed solution system is reduced, the diameter of the prepared fiber is reduced, and meanwhile, the mild binding force of cinnamyl aldehyde minimally affects the interaction between cellulose acetate molecules.

This invention discloses an N-alkoxyacetamide compound, its pharmaceutical composition, and its applications. Specifically, this invention provides a compound as shown in formula (II), its pharmaceutically acceptable salt, or its stereoisomer, which can effectively treat or prevent chronic kidney disease, congestive heart failure, hypertension, hypertension complications, or primary aldosteronism; for example, hypertension or primary aldosteronism.

The application discloses an aggregation-induced emission compound with double fluorescence emission characteristics and a preparation method and application thereof, and the proportional fluorescence probe has a structure of general formula I. The probe molecule has a polar response group tetraphenyl ethylene as a fluorescence report unit, introduces a hydrophilic oxygen atom, connects an alpha carbon of an acetamide, and connects a polar detection sensitization group Tag chain on an amino group of the acetamide. The probe molecule improves the conjugation degree of oxygen atom lone pair electrons and a tetraphenyl ethylene pi electron system, so that the probe molecule simultaneously produces n→pi* and pi→pi* molecular transitions, and a proportional fluorescence probe which can sensitively respond to polarity change is constructed. The fluorescence probe designed in the application has the advantages that the fluorescence probe is not easily interfered by probe concentration, a detection environment and light bleaching, and experiments prove that the proportional fluorescence intensity of the fluorescence probe can sensitively respond to polarity, and the proportional fluorescence intensity and water content are linearly fitted, so that the purposes of detecting water content in an organic reagent and alcohol content in wine are achieved.

The present application relates to photosensitive polyimide oligomer, preparation method and polyimide photosensitive resin composition prepared by the same, the present application provides the molecular formula of photosensitive polyimide oligomer, which is prepared from 1, 4, 5, 8-naphthalene tetracarboxylic anhydride, N, N-dimethylacetamide, triethylamine, tetramethyl benzene dimethyl diisocyanate, hydroquinone methyl ether, dibutyl tin dilaurate and hydroxyethyl acrylate according to the molar ratio of 2.5:10-15:1.2-1.6:3.0:0.0035-0.0045:0.007-0.01:2-2.5.The good solubility group is introduced into the molecular structure, so that it has good solubility in active diluent, and the polyimide oligomer can be photocured reaction;The device printed by the polyimide photosensitive resin composition prepared by the same has small shrinkage, high precision, and has the excellent performance of photosensitive polyimide oligomer, and has certain toughness and excellent weather resistance.

The application discloses a synthesis method of afugan, which comprises the following steps: 1-[3-chloro-5-(trifluoromethyl)phenyl]-2,2,2-trifluoroacetone and 4-acetylnaphthalene carboxylic acid are added into a solvent, a base is added, DMAP is added after complete reaction at 50-80 DEG C, acetic anhydride is added dropwise, tetrabutylammonium bromide is added after complete reaction, and an aqueous solution of sodium hydroxide and hydroxylamine hydrochloride is added, and reaction is carried out at 0-5 DEG C, so that an intermediate is obtained; the intermediate is reacted with acyl chloride under the action of DMF and dichloromethane, so that 4-(5-(3-chloro-5-(trifluoromethyl)phenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole-3-yl)-1-naphthalene carboxylic chloride is prepared; 2-amino-N-(2,2,2-trifluoroethyl)acetamide hydrochloride and a dichloromethane solution of a base are added dropwise, and reaction is carried out at 0-5 DEG C, so that afugan is obtained. The method has a short route, high yield and suitability for large-scale industrial production.

Our invention relates to a process for the preparation of 2-amino-N-[2-[methyl-[2-oxo-2-[[6- (trifluoromethoxy)-1,3-benzothiazol-2-yl]amino]ethyl]amino]-2-oxoethyl]acetamide, to its new salts, its anhydrous forms, hydrates and solvates, to its new crystalline forms (in other words, polymorphic modifications or polymorphs), and to the preparation of all of these, to pharmaceutical compositions containing them, and to the medical applications of the new salts and crystalline forms according to the invention.

The application discloses a catalyst for preparing malononitrile, a preparation method of the catalyst and a method for preparing malononitrile by using the catalyst. The catalyst is a solid catalyst, which is an acidic catalyst loaded with rare earth metal oxide. The method for preparing malononitrile is that cyanoacetic acid or cyanoacetate or cyanoacetamide and an ammonia source are subjected to ammoniation dehydration reaction in a continuous reactor to prepare malononitrile according to a certain molar ratio. Then, vacuum distillation (20 torr-25 torr) is carried out, and a fraction collected at 110 DEG C-120 DEG C is malononitrile product. The ammonia source can be ammonia gas, ammonia water, ammonium carbonate or urea. The method for preparing malononitrile can reduce production cost, improve production safety, reduce the discharge amount of three wastes in the preparation of malononitrile by using an existing process, and improve product quality, and is a sustainable and green synthesis route.

The present invention provides an inkjet ink comprising: 5-40% by weight of an N-vinyl monomer selected from N-vinyl caprolactam, N-vinyl pyrrolidone, N-vinyl piperidone, N-vinyl carbazole, N-vinyl formamide, N-vinyl indole, N-vinyl imidazole, N-vinyl acetamide, and mixtures thereof, based on the total weight of the ink; one or more difunctional monomers in which the only radiation-curable functional groups present in the monomer are (meth)acrylate groups; 9% or less by weight of a monofunctional monomer, other than the N-vinyl monomer, together with a multifunctional monomer, based on the total weight of the ink; a radical photoinitiator; and a colouring agent. The present invention also provides a method of inkjet printing using the inkjet ink of the present invention and use of an N-vinyl monomer selected from N-vinyl caprolactam, N-vinyl pyrrolidone, N-vinyl piperidone, N-vinyl carbazole, N-vinyl formamide, N-vinyl indole, N-vinyl imidazole, N-vinyl acetamide, and mixtures thereof to increase the cure speed of an inkjet ink comprising one or more of difunctional monomers.

The invention relates to a method for detecting primary metabolites and / or secondary metabolites in flavors and fragrances, which comprises the following steps: (1) mixing flavors and fragrances, an internal standard substance and a solvent, extracting, taking clear liquid, and removing the solvent to obtain a dry product; (2) mixing the dry product, an oximation reagent and a solvent for an oximation reaction, and then mixing a reaction system and a silanization reagent for a silanization reaction to obtain a solution to be detected; the silanization reagent comprises a combination of N-methyl-N-(trimethylsilyl) trifluoroacetamide and N, O-bis (trimethylsilyl) trifluoroacetamide, and the silanization reagent comprises N-methyl-N-(trimethylsilyl) trifluoroacetamide and N, O-bis (trimethylsilyl) trifluoroacetamide; and (3) detecting the solution to be detected by adopting a gas chromatography-mass spectrometry method, and obtaining the content of primary metabolites and / or secondary metabolites in the flavors and fragrances by utilizing an internal standard method. According to the method provided by the invention, the flavors and fragrances are subjected to oximation and silanization treatment, and then the flavors and fragrances are detected by using the gas chromatography-mass spectrometry, so that the metabolites contained in the flavors and fragrances can be precisely and accurately detected.

The invention relates to the technical field of batteries, and discloses an electrolyte and application thereof, and a lithium carbon fluoride battery. The electrolyte comprises a lithium salt and an organic solvent; wherein the lithium salt is lithium bis (fluorosulfonyl) imide; the organic solvent is selected from one of ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene carbonate, propylene carbonate, dimethyl carbonate, ethyl methyl carbonate, dimethylformamide, dimethylacetamide and dimethyl sulfoxide. The electrolyte can be applied to preparation of a lithium primary battery. The invention also relates to a lithium carbon fluoride battery comprising the electrolyte. The electrolyte system provides an optimized solution for the preparation of the high-energy-density lithium carbon fluoride battery, has a wide application prospect, can remarkably improve the performance of the battery, reduces the production cost, and promotes the further development of the lithium carbon fluoride battery technology.

The application belongs to the field of organic synthesis, and discloses a method for preparing chiral 2-(1,3-diarylallyl)malonate by using a Pd / phosphine oxygen bidentate phosphine phenol ligand catalysis, which comprises the following steps: under a protective atmosphere, mixing P, O-bidentate phosphine phenol ligand, a palladium catalyst, N, O-bis(trimethylsilyl)acetamide, a malonate nucleophilic reagent and an allyl acetate electrophilic reagent in dichloromethane, and reacting to obtain chiral 2-(1,3-diarylallyl)malonate product. The system has the advantages of high enantioselectivity, high catalytic efficiency, wide substrate application range and mild conditions.

The invention discloses a preparation method and application of a ferroelectric enhanced core-shell structure artificial photosynthetic heterojunction catalyst, and belongs to the field of solar energy conversion and photocatalytic degradation. The invention aims to explore the technical problems of low-cost green preparation, high photoelectric conversion efficiency and photocatalytic performance improvement of the photocatalyst. The method comprises the following steps: 1, respectively dissolving bismuth nitrate pentahydrate and iron nitrate nonahydrate in ethylene glycol in sequence, heating in a water bath, stirring, aging, transferring sol into an air dry oven, drying to obtain gel powder, grinding, transferring the powder into a muffle furnace, and calcining to obtain BiFeO3 powder (named as BFO); and 2, dissolving thioacetamide in deionized water, fully stirring, adding the BFO prepared in the step 1, transferring the solution into an ultrasonic cleaning machine, carrying out ultrasonic dispersion, transferring the solution into a reaction kettle, carrying out heating reaction, cooling, washing, and drying to obtain the ferroelectric enhanced Bi2S3 / BFO photocatalyst with a stable heterojunction structure.

The utility model belongs to acetamide preparation device technical field, concretely is a kind of for the vaporizer of acetamide preparation, including shell, shell includes heat preservation shell, the right side surface of heat preservation shell is fixedly connected with first connecting block, the right side surface of heat preservation shell is movably connected with connecting shell, the surface of connecting shell is equipped with first through-hole, first connecting block extends to the right side of connecting shell through first through-hole, the surface of first connecting block is equipped with third through-hole, the right side surface of connecting shell is installed with fixed mechanism, fixed mechanism includes connecting plate, the left side surface of connecting plate is fixedly connected with the right side surface of connecting shell, the left side surface of connecting plate is fixedly connected with electric telescopic handle, the telescopic end of electric telescopic handle is fixedly connected with second connecting block, the surface of second connecting block is movably connected with connecting hook.The utility model is easy to disassemble shell to replace internal element, to reduce production cost.

A ZIF-derived zinc-cadmium sulfide photocatalyst, its preparation method, and its application are disclosed. The catalyst, by molar fraction, comprises: 35-50% 2-methylimidazole; 0-7.7% divalent cadmium ion compound; 0-7.7% divalent zinc ion compound; 7-10% thioacetamide; and 35-50% amines. The preparation method involves: preparing a 2-methylimidazole solution and a cadmium-zinc mixed solution separately; then preparing a ZIF precursor solution with cadmium and zinc as the central metals; adding thioacetamide to the precursor solution; transferring the solution to a polytetrafluoroethylene liner and hydrothermally treating it; finally collecting the hydrothermally treated solution, centrifuging, washing, drying, and grinding to obtain the ZIF-derived zinc-cadmium sulfide photocatalyst. The catalyst prepared by this invention has a large specific surface area and exhibits significant catalytic effects in photocatalytic water splitting for hydrogen production. Furthermore, the catalyst has a stable structure and can be recycled for a long period without a significant decrease in the hydrogen production rate.

The application belongs to the technical field of medicine, and relates to N-methyl-2-(9-oxoacridin-10(9H)-yl)acetamide compounds and a preparation method and application thereof. The preparation method of the compound is as follows: taking o-aminobenzoic acid as a starting material, performing substitution reaction, condensation reaction, alkylation reaction and hydrolysis reaction to generate a key intermediate acridone acetic acid, and finally performing condensation reaction on the acridone acetic acid and substituted pyrimidine in the presence of TCFH and NMI condensing agents to obtain the target compound. The preparation method of the N-methyl-2-(9-oxoacridin-10(9H)-yl)acetamide compound provided in the application is simple and feasible, and good results are shown in in-vitro anti-tumor activity tests, and the compound has excellent anti-proliferation ability on human breast cancer cells BT-549 and MDA-MB-231 in particular.

The invention relates to a synthesis method of an allyl amine compound. According to the method, 2-methylquinoline or acetophenone derivatives are used as raw materials, a selective fluorine reagent Selectfluor is used as an accelerant, dimethyl sulfoxide and N 'N-dimethylacetamide are used as a mixed solvent, and the allyl amine series compounds are prepared with high yield. The preparation method has the advantages of being low in cost, easy to operate, green, free of pollution and the like, and has potential industrial application prospects. The method provides a green, cheap and convenient way for preparing the allyl amine derivative by using 2-methylquinoline or acetophenone compounds as initiators.

The invention discloses a catalyst for synthesizing 1, 3-dioxane-2-ketone as well as a preparation method and application of the catalyst. The catalyst is prepared from the following components in percentage by mass: 60wt%-90wt% of a component A, 5wt%-20wt% of a component B and 5wt%-30wt% of a component C, wherein the component A is one or more of N, N-dimethyl formamide, N, N-dimethylacetamide, N, N-diethyl formamide and urea, and the component B is one or more of N, N-dimethyl formamide, N, N-dimethylacetamide, N, N-diethyl formamide and urea; the component B is one or more of lithium carbonate, sodium carbonate, potassium carbonate, cesium carbonate, calcium carbonate and magnesium carbonate; and the component C is 1-butyl-3-methylimidazolium tetrafluoroborate and / or 1-butyl-3-methylimidazolium hexafluorophosphate, and the component C is 1-butyl-3-methylimidazolium hexafluorophosphate. According to the present invention, the components of the catalyst have the mutual synergistic promotion effect, the reaction substrate can be adsorbed and activated, the reaction condition is mild, the product yield is high, the catalyst can be recovered and regenerated, and the environmental pollution is low.

The application provides a laser etching PVDF micro-nano structure ultrafiltration membrane and a preparation method thereof, and comprises the following steps: introducing a conjugated double bond into polyvinylidene fluoride by reacting the polyvinylidene fluoride with an organic base to obtain modified polyvinylidene fluoride; adding the modified polyvinylidene fluoride, carboxylated graphene oxide powder, a catalyst, a plasticizer and a pore-forming agent into a dimethylacetamide solution, mixing uniformly to obtain a composite base membrane casting solution, adding an alcohol-water solution for phase inversion to obtain a modified polyvinylidene fluoride ultrafiltration membrane, performing laser etching, immersing the laser etching modified polyvinylidene fluoride ultrafiltration membrane into a hydrophilic solution, and / or spraying a hydrophilic polymer on the surface of the laser etching modified polyvinylidene fluoride ultrafiltration membrane to obtain a target ultrafiltration membrane. Compared with the prior art, the laser etching PVDF ultrafiltration membrane preparation method has obvious beneficial effects in the aspects of improvement of hydrophilicity, improvement of separation efficiency, increase of stability, reduction of energy consumption and environmental protection sustainability, and brings significant innovation and progress to the field of membrane separation technology.

The invention relates to the technical field of production of flurala drops, in particular to a flurala drop preparation method based on online monitoring. The preparation method comprises the following preparation processes: sequentially adding weighed dimethylacetamide and acetone into a liquid preparation tank, adding fluralana and tetrahydrofuran polyglycol ether into the liquid preparation tank, stirring until the materials are uniformly mixed, monitoring raw material data, production data and product data by using a monitoring and collecting system in the preparation process, and recording and storing the raw material data, production data and product data through a monitoring and recording system. Data collected by the monitoring and collecting system is used as a reference, production is controlled and commanded through the monitoring and controlling system, and the monitoring and recording system records and stores the data and sends the data to the monitoring and analyzing system for statistical analysis and machine learning training. Key links such as raw material parameters, environmental process parameters and intermediate product and finished product quality data are monitored online in real time through the monitoring and collecting system, the production dynamic state is comprehensively mastered, and it is guaranteed that all procedures are strictly executed according to the process requirements.

The invention relates to a preparation method of a polyacid modified CuMoSelectrode material, and belongs to the technical field of new energy materials and photoelectric conversion. According to the preparation method, an in-situ synthesis method is adopted, and SiW11Co is doped in a CuMoS material through a one-step solvothermal preparation technology; comprising the following steps: S1, dissolving sodium molybdate and thioacetamide in ethylene glycol, then adding SiW11Co into the solution for dissolving, finally adding Cu2O, and carrying out ultrasonic treatment on the mixed solution at room temperature for 10-15 minutes to obtain a uniform dark brown suspension; s2, continuously stirring for 5 minutes, transferring the precursor suspension into a high-pressure reaction kettle, and carrying out a solvothermal process for 22-24 hours; s3, the reaction kettle is cooled to the room temperature, a final product is centrifugally washed three times with deionized water and absolute ethyl alcohol respectively, then vacuum drying is conducted, and the SiW11Co / Cu2MoS4 composite material is obtained. By introducing a proper amount of SiW11Co, a rough structure is formed on the surface of CuMoS, the number of active sites is increased, the specific surface area is increased, and the catalytic performance and the stability are far better than those of a traditional CuS counter electrode and an unmodified CuMoS counter electrode.