3461 results about "Imidazole" patented technology

The invention discloses application of 4, 5-dialkyl imidazole cationic lipid in a drug brain delivery carrier, and belongs to the field of drug delivery. The 4-site and the 5-site of imidazole are respectively modified with alkyl with not less than 10 carbon atoms to form the 4, 5-dialkyl imidazole cationic lipid. The 1, 4, 5-dialkyl imidazole cationic lipid is mixed with a therapeutic drug and other lipid auxiliary materials to prepare drug-loaded lipid nanoparticles loaded with the therapeutic drug, and the drug-loaded lipid nanoparticles can be used as a drug delivery system for brain delivery of the therapeutic drug. The 1, 4, 5-dialkyl imidazole cationic lipid has the function of dynamically regulating and controlling opening and closing of a blood brain barrier, and reversible opening of the blood brain barrier can be achieved; the formed drug carrier can pass through a blood brain barrier and well realize brain delivery of loaded therapeutic drugs, and a new strategy is provided for brain delivery of different types of drugs.

The application discloses a kind of ship super-long anticorrosion special nano powder coating, preparation method and application, belong to ship heavy anticorrosion material technical field.The preparation method of the ship super-long anticorrosion special nano powder coating is as follows: epoxy resin, graphene modified epoxy resin, core-shell structure ZnO@SiO2, modified 2,5-dimercapto-1,3,4-thiadiazole, borosilicate glass powder, flaky boron nitride, silane coupling agent modified silica, phenolic amine curing agent, 2-ethyl-4-methylimidazole, fumed silica, defoaming agent, ultraviolet absorber, high-temperature pigment are put into stirrer and stirred for 20-30min, then melt extrusion is carried out through double screw extruder, the extrusion temperature is 90-110 DEG C, grinds and sieves, and the ship super-long anticorrosion special nano powder coating is obtained.The coating prepared by the application has good anticorrosion performance and can be applied in the field of ship metal surface corrosion protection.

The invention provides a toughened curing-controllable prepreg and a preparation method thereof, and belongs to the technical field of high-performance composite materials. Comprising the following components in parts by mass: 100 parts of epoxy resin, 100 parts of a thermoplastic resin toughening agent, 100 parts of an inorganic nanoparticle toughening agent, 100 parts of a latent curing agent, 100 parts of an organic urea accelerant, 100 parts of an imidazole accelerant and 100 parts of a reactive diluent, correspondingly, 1-5 parts by mass of a thermoplastic resin flexibilizer, 0-3 parts by mass of an inorganic nanoparticle flexibilizer, 4-8 parts by mass of a latent curing agent, 1-4 parts by mass of an organic urea accelerator, 0.1-0.5 part by mass of an imidazole accelerator and 5-20 parts by mass of an active diluent are added. The prepreg provided by the invention not only is endowed with fast curing and controllable curing time, but also is endowed with relatively long room-temperature storage period, high toughness and good impact resistance, and is especially suitable for the fields of low-altitude aircrafts, automobiles, ships and the like.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

Disclosed are an ionic liquid-based perfluorinated high-voltage-resistant lithium battery electrolyte and a preparation method therefor. The high-voltage-resistant electrolyte is composed of an imidazolyl ionic liquid, a lithium salt, and an electrolyte additive. The ionic liquid-based electrolyte has relatively reversible and stable lithium stripping / deposition performance, exhibits good compatibility with a lithium metal / graphite negative electrode, and can also form a highly fluorinated stable electrode-electrolyte interface (CEI / SEI layer), thus improving the compatibility of the ionic liquid electrolyte with a high-voltage lithium cobaltate positive electrode, and effectively inhibiting dendrite formation and oxidation dissolution of the electrolyte, thereby achieving extremely high cycle stability and Coulombic efficiency of a lithium battery under high voltage conditions.

The invention relates to the technical field of adhesive tapes, and particularly discloses a UV (ultraviolet) visbreaking anti-acid adhesive tape for thinning flexible glass and a preparation process of the UV visbreaking anti-acid adhesive tape. A UV viscosity-reducing acid-resistant adhesive tape for thinning flexible glass comprises a base material layer, a pressure-sensitive adhesive layer and a release film layer which are stacked in sequence, and the pressure-sensitive adhesive layer is prepared from the following raw materials: 85-120 parts by mass of an acrylate copolymer, 3-5 parts by mass of a cross-linking agent, 1.5-2.5 parts by mass of a photoinitiator, 2-5 parts by mass of an acid-resistant nano filler and 0.2-0.4 part by mass of an amine catalyst; the acrylate copolymer is prepared from the following raw materials in parts by mass: 20-30 parts of an imidazolinyl-containing monomer, 15-25 parts of a large-steric-hindrance alkyl-containing monomer, 45-55 parts of a flexible monomer and 5-10 parts of a carboxyl-containing monomer. The UV visbreaking acid-resistant agent prepared by the invention has relatively good acid resistance and reliable UV visbreaking and high initial bonding balance.

The invention discloses a carbon quantum dot / metal organic framework composite material as well as a preparation method and application thereof, and the method is characterized in that carbon quantum dots derived from waterborne polyurethane are embedded into a zeolite imidazate framework 8 to prepare the carbon quantum dot / metal organic framework composite material. The composite material can be used as a ratio type fluorescent probe for trace detection of tetracycline, a dual-emission fluorescence signal of the probe is derived from tetracycline which quenches blue fluorescence of puCDs at 450 nm through an inner filter effect, and the coordination effect between Zn < 2 + > and tetracycline triggers an aggregation-induced emission effect, so that new fluorescence emission is generated, and the detection sensitivity is improved. The intensity of the two signals changes in proportion to the concentration of tetracycline, the wide linear concentration detection range and the low detection limit are achieved, the probe has the high recovery rate and the large adsorption capacity in detection, the problems that a traditional detection method is insufficient in sensitivity, poor in anti-interference capacity, high in cost and the like are solved, and the application prospect is wide. A new thought is provided for constructing a ratio type fluorescent probe with a removal function.

The invention discloses ternary synergistic nano-enzyme hydrogel as well as a preparation method and application thereof, and relates to the technical field of biomedical materials. The preparation method comprises the following steps: dissolving zinc nitrate hexahydrate and ferric nitrate nonahydrate in methanol; dissolving 2-methylimidazole in methanol, adding into a metal salt solution, stirring, and sequentially centrifuging, washing and drying to obtain Fe / ZIF-8 nano-enzyme; the preparation method comprises the following steps: adding methacrylated gelatin and hyaluronic acid into deionized water, stirring, cooling to room temperature, and refrigerating to obtain a GelMA-HA precursor solution; and adding the Fe / ZIF-8 nano-enzyme into the GelMA-HA precursor solution, stirring, injecting into a mold, and carrying out ultraviolet light cross-linking curing to obtain the ternary synergistic nano-enzyme hydrogel. According to the hydrogel disclosed by the invention, active oxygen is efficiently removed and oxygen is produced through Fe / ZIF-8 nano-enzyme, and cartilage repair is promoted in combination with lubrication and slow release functions of gelatin hydrogel, so that a new strategy is provided for treatment of osteoarthritis.

The invention belongs to the technical field of membrane separation, and particularly relates to a low-pressure high-flux polyamide / polysulfone hollow fiber composite nanofiltration membrane and a preparation method thereof. The preparation method of the composite nanofiltration membrane comprises the following steps: dissolving sulfonated polysulfone, poly (1-vinyl-3-butylimidazole) bromide and polyvinylpyrrolidone to prepare a spinning solution, and spinning to obtain a base membrane; carrying out hydrophilic modification on the base membrane by using 1, 3-propane sultone; then, an aqueous phase solution containing poly (gamma-glutamic acid) and triethylene tetramine and an organic phase solution containing trimesoyl chloride and 3, 5-diaminobenzoic acid are subjected to interfacial polymerization in the inner cavity of the modified base membrane to form a polyamide separation layer; and finally, carrying out heat treatment to obtain the composite nanofiltration membrane. Through the synergistic effect of zwitterionic ionization of the base membrane and biomacromolecule construction of the separation layer, the mass transfer resistance of water is remarkably reduced, unification of high flux and high selectivity is achieved, and good structural stability is achieved.

The invention discloses composite hydrogel bio-ink with a function of space-time delivery of double growth factors as well as a preparation method and application of the composite hydrogel bio-ink, and belongs to the technical field of biomedical materials and tissue engineering. According to the preparation method, imidazolyl-modified methacrylated gelatin and double-bonded PF127 are compounded, and meanwhile, free vascular endothelial growth factors and connective tissue growth factor-loaded PLGA microspheres are entrapped in a system, so that the bio-ink with excellent printability, high adhesion, swelling resistance and space-time delivery function is formed; the bio-ink physically has the advantages of high printing fidelity, low swelling property, high mechanical strength and strong tissue adhesion of a synthetic material; in biology, the system can be used as an intelligent carrier to realize programmed space-time delivery of various growth factors, so that complex cell biological behaviors are accurately arranged, and real regeneration of functional tissues is guided.

The invention relates to the technical field of dry films, in particular to a photosensitive resin composition, a photosensitive dry film and a preparation method of the photosensitive dry film. Comprising alkali-soluble resin, a photopolymerizable monomer with at least one vinyl unsaturated group, a photosensitizer and other additives, and the alkali-soluble resin at least comprises a nitrogen-containing heterochain or nitrogen heterocyclic ring monomer chain segment group; the alkali-soluble adhesive resin containing aza-chain or azacyclo-containing monomer chain segment groups is prepared by introducing an aza-chain or azacyclo-containing monomer, such as a monomer containing primary amine, secondary amine, tertiary amine, quaternary ammonium salt, pyridines, imidazoles and other groups, into alkali-soluble resin, and is used for improving the adhesive force and binding force between the resin and the surfaces of metals such as copper and the like; therefore, the resolution and adhesion capability of the photosensitive resin composition or the photosensitive dry film is improved.

The invention relates to the technical field of OLED (Organic Light Emitting Diode) manufacturing process etching processes, in particular to a silver etching solution for an OLED manufacturing process as well as a preparation method and application of the silver etching solution. The silver etching liquid comprises nitric acid, phosphoric acid, a buffer agent, a metal ion chelating agent and an ionic liquid inhibitor, the ionic liquid inhibitor comprises 1-butyl-3-methylimidazole phosphate, the metal ion chelating agent is selected from at least one of pyromellitic acid, diethylenetriamine pentaacetic acid and ethylenediamine tetramethylene phosphoric acid, and the buffer agent is selected from at least one of sodium chloride, sodium chloride and sodium chloride. The buffering agent comprises acetic acid, and all the components are prepared according to a specific mass ratio. The etching solution can balance the etching rate of silver and indium tin oxide, avoid silver residues and black spot defects, prolong the service life of the solution, reduce the use of a volatile buffer agent, adapt to the OLED fine manufacturing process, improve the product yield and reduce the production cost, and is suitable for etching of a metal substrate in the OLED manufacturing process.

The invention relates to the technical field of batteries, in particular to a core-shell material, a preparation method, a negative electrode material and a battery. The method provided by the invention comprises the following steps: processing metal salt raw materials of aluminum, iron, cobalt, nickel, zinc and lanthanum into a high-entropy metal oxide; taking silicon particles as a core layer, gasifying a high-entropy metal oxide, and depositing the gasified high-entropy metal oxide on the surface of the core layer to form a coating layer so as to obtain Si (at) HEO particles; depositing a zinc layer on the Si-coated HEO particles to form a growth layer on the surface of the coating layer, dispersing the Si-coated HEO particles in a Si-coated HEO solvent, adding a zinc nitrate aqueous solution and a 2-methylimidazole aqueous solution for reaction, and growing a shell layer on the growth layer on the surface of the coating layer to obtain Si-coated HEO-ZIF particles; and mixing the acidic solution and the Si (at) HEO (at) ZIF particles to form a secondary pore channel, and separating to obtain the core-shell material. The core-shell material provided by the invention solves the problems of low stress dispersion efficiency, low ion transmission and poor volume expansion rate of the existing core-shell material.

The invention relates to a platinum-zinc alloy supported nitrogen-doped porous multi-layer carbon material and preparation and application thereof, the carbon material takes a rod-like graded porous carbon nanomaterial as a carrier, and platinum-zinc alloy particles and zinc monatomic are jointly supported on the surface of the carrier; the preparation method comprises the following steps: S1, adding zinc acetate and hexadecyl trimethyl ammonium bromide into DMF (Dimethyl Formamide), carrying out ultrasonic treatment, adding into a polyacrylonitrile solution, and stirring; s2, performing electrostatic spinning on the obtained spinning precursor solution; s3, adding the obtained nanofiber into a zinc acetate dihydrate solution, then adding a dimethylimidazole solution, carrying out hydrothermal reaction, soaking the obtained product in a chloroplatinic acid methanol solution, and then carrying out freeze drying; and S4, heating carbonization is carried out under the protection of an inert atmosphere, then annealing and cooling are carried out, and the PtZn-Zn-N4-HPCNFs material is obtained. Compared with the prior art, the catalytic performance and the like in the reaction processes of oxygen reduction reaction (ORR), chlorine evolution reaction (CER) and the like can be effectively improved.

The invention belongs to the technical field of thermoelectric materials and functional polymer materials, and particularly relates to thermoelectric hydrogel based on synergistic enhancement of zwitterions and a polar solvent as well as a method and application of the thermoelectric hydrogel. The thermoelectric hydrogel is obtained through the steps that a precursor solution is subjected to a polymerization reaction to form a gel matrix, then the gel matrix is soaked in a soaking solution, potassium ferricyanide / potassium ferrocyanide redox couple is introduced, and the thermoelectric hydrogel is obtained, and the precursor solution is prepared from acrylamide, N-isopropylacrylamide, dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide and N, N-dimethylformamide. The photoinitiator is prepared by mixing N, N-dimethylformamide, 1-ethyl-3-methylimidazolium tetrafluoroborate, a zwitterionic monomer [2-(methylacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, a cross-linking agent N, N '-methylene bisacrylamide, a photoinitiator and deionized water. The thermoelectric hydrogel prepared by the invention has high mechanical strength, high ductility and high Seebeck coefficient, and has better temperature resistance.

The present invention provides a production method of a thienopyrimidine derivative or a salt thereof which has a gonadotropin releasing hormone (GnRH) antagonistic action with high quality in high yield. The present invention provides a method of producing a thienopyrimidine derivative, which comprises reacting 6-(4-aminophenyl)-1-(2,6-difluorobenzyl)-5-dimethylaminomethyl-3-(6-methoxypyridazin-3-yl) thieno[2,3-d]pyrimidine-2,4 (1H,3H)-dione or salt thereof, 1,1′-carbonyldiimidazole or a salt thereof and methoxyamine or a salt thereof, and the like.

The invention relates to the technical field of coatings, and discloses a carbon nanotube modified acrylic resin coating and a preparation method thereof. The coating disclosed by the invention is prepared from the following raw materials in parts by weight: 100 parts by weight of a carbon nanotube modified water-based acrylic resin emulsion, 0.5 to 0.8 part by weight of a dispersing agent, 8 to 10 parts by weight of deionized water, 0.1 to 0.3 part by weight of a de-foaming agent, 5 to 7 parts by weight of a coalescing agent, 0.1 to 0.3 part by weight of a rheological agent and 0.8 to 1 part by weight of a flatting agent. A physical-chemical cross-linked network structure is formed in the coating by utilizing a long-chain structure and a dialkenyl structure contained in the functionalized carbon nano tube, and the physical-chemical cross-linked network structure and the uniformly dispersed carbon nano tube synergistically improve the mechanical property of the material, and imidazole quaternary ammonium salt and thymol structures contained in the functionalized carbon nano tube synergistically improve the antibacterial property of the material. The paint prepared by the invention has a relatively wide application value in the fields of furniture, woodware, automobile industry and the like.

The invention discloses a covalent organic framework material based on a boric acid structure, a preparation method of the covalent organic framework material and application of the covalent organic framework material in dopamine detection, and relates to a covalent organic framework material and a preparation method and application of the covalent organic framework material. The technical problems that an existing dopamine recognition method is high in detection limit and harsh in recognition environment are solved. The periodic structure fragment of the covalent organic framework material based on the boric acid structure is shown in the specification. The 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine and 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetrabenzaldehyde are subjected to a reaction to obtain the 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine derivative. The covalent organic framework material based on the boric acid structure is used for detecting dopamine, has relatively high selectivity and anti-interference capability, and is not interfered by amino acid in the environment. And the covalent organic framework material based on the boric acid structure can be embedded in the hydrogel, so that the hydrogel is convenient to carry. The method can be applied to detection of dopamine in environment and biological systems.

The invention relates to the technical field of adhesives, and discloses an imidazolium ionic liquid and a preparation method and application thereof, the preparation method comprises the following steps: reacting omega-bromoalcohol with 1-(methoxymethyl) imidazole in acetonitrile, and washing with methyl tert-butyl ether to obtain a target ionic liquid precursor; and dissolving the product in acetonitrile, adding 4-trifluoromethyl phenyl isocyanate, and washing with methyl tert-butyl ether after the reaction is finished, thereby obtaining the target imidazolium ionic liquid. The imidazolium ionic liquid disclosed by the invention is applied to a PVB (Polyvinyl Butyral) adhesive, and the PVB adhesive shows excellent adhesion strength in a macroscopic adhesion performance test on the basis of multiple interactions, and particularly has excellent adhesion strength on aluminum. The obtained adhesive can be universally adapted to various substrates such as metal substrates and macromolecule substrates, and finally high-strength and high-durability intelligent adhesion performance is achieved.

The invention discloses a nucleic acid medicinal preparation based on dialkyl imidazole cationic lipid as well as a preparation method and application thereof, and belongs to the field of medicinal preparations. The nucleic acid pharmaceutical preparation comprises drug-loaded lipid nanoparticles, and the drug-loaded lipid nanoparticles comprise one or more dihydrocarbyl imidazole cationic lipids. By adjusting lipid composition and proportion in the drug-loaded lipid nanoparticles, efficient loading and delivery of different types of nucleic acid drugs can be realized; the drug-loaded lipid nanoparticles have good biological safety, the preparation process is simple, and large-scale production is easy; the drug-loaded lipid nanoparticle can effectively pass through a blood brain barrier, realizes specific brain-targeted delivery of the loaded nucleic acid drug, and provides a new strategy for realizing brain-targeted delivery of different nucleic acid drugs for treating brain diseases.

The present invention relates to compounds of formula (I) below, or any one of its pharmaceutically acceptable salts: [Formula 1] JPEG2023523788000127.jpg41170 where R 1 is (C1-C6) alkyl group, spiro (C5-C 11 ) bicyclic rings, fused phenyl groups, substituted phenyl groups, R'-L- groups, where L is either a single bond or a (C1-C3) alkanediyl group, and R' is a (C3-C8) cycloalkyl group, a bridged (C6-C 10 ) cycloalkyl group, (C3-C8) heterocycloalkyl group, or (C3-C8) heteroaryl group, or R'-L- group, where L is a (C1-C3) alkanediyl group and R' is an optionally substituted phenyl group, and R 2 represents a hydrogen atom or a (C1-C3) alkyl group. The present invention further relates to compositions comprising the compound of formula (I), as well as methods for preparing the compound and synthetic intermediates thereof. The present invention also relates to the compound for use as a pharmaceutical, in particular for treating and / or preventing cognitive impairment associated with Down's syndrome; Alzheimer's disease; dementia; tauopathies; Parkinson's disease; CDKL5 deficiency disorders; Phelan-McDermid syndrome; autism; type 1 and type 2 diabetes; folate and methionine metabolism disorders; osteoarthritis; Duchenne muscular dystrophy; some cancers; neuroinflammation, anemia, and viral and unicellular infections, and for regulating body temperature.

The invention belongs to the technical field of conductive microsphere preparation, and particularly relates to a preparation method and application of conductive microspheres with convex particles on the surfaces. The preparation method comprises the following steps: acidizing resin microspheres by using imidazole disulfate ionic liquid, and combining the acidized resin microspheres with aminated activated carbon through chemical bonds to obtain microspheres with convex particles on the surfaces; and sequentially carrying out stannous chloride sensitization, palladium chloride activation and chemical nickel plating on the microspheres with the convex particles on the surfaces to obtain the conductive microspheres with the convex particles on the surfaces. The conductive microspheres with the raised particles on the surfaces can generate more and more effective local contact points in the crimping process, so that the connection resistance is obviously reduced, and the excellent conductive performance is realized.

The application discloses an indium-based oxide catalyst, which is prepared by the following method: step one, adding indium nitrate, isophthalic acid, DMF, acetonitrile, imidazole and nitric acid into a reaction kettle, reacting at 80 DEG C for 12 hours, then heating to 100 DEG C and reacting for 24 hours, washing with DMF and anhydrous ethanol respectively, and vacuum drying for 12 hours to obtain an In-MOF precursor; step two, keeping the In-MOF precursor under the condition of nitrogen atmosphere and 200-600 DEG C for 4 hours, and naturally cooling to room temperature to obtain the indium-based oxide catalyst. Most of the prepared indium-based oxide catalysts still retain the corresponding three-dimensional hierarchical porous framework structure of the original MOF; the indium-based oxide catalyst contains highly dispersed metal active sites inside, effectively reduces the aggregation of metal oxides or metal elements, and thus exhibits more excellent catalytic activity; the organic ligand isophthalic acid generates a large amount of carbon material through pyrolysis under an inert atmosphere, greatly improving the conductivity of the indium-based oxide catalyst.

The invention discloses a hydrogenation device scale inhibitor for heavy high-sulfur raw oil and a preparation method of the hydrogenation device scale inhibitor, and relates to the technical field of scale inhibitors. The scale inhibitor is prepared from a polyisobutylene succinimide dispersing agent, a high-temperature-resistant scale inhibition dispersing agent, an anti-rust agent, an imidazoline corrosion inhibitor, an antioxidant, a sulfide chelating agent, a clearing agent, cup carbazole alkylbenzene sulfonate and a solvent in specific parts by weight. The preparation method comprises the following steps: heating the solvent to 80-100 DEG C, sequentially adding the other components, and stirring for 30-40 minutes. Aiming at the characteristics of heavy high-sulfur raw oil, the scale inhibitor realizes high scale inhibition rate, excellent high-temperature stability and strong sulfur corrosion resistance through a multi-component synergistic effect, effectively solves the problems of scaling and corrosion of a hydrogenation device, prolongs the operation cycle of the device, and is suitable for a hydrogenation process of high-sulfur and high-asphaltene raw oil.

The invention discloses a strong acid and alkali resistant plastic material for fume hood surface decoration and a preparation method of the strong acid and alkali resistant plastic material, belongs to the technical field of plastic material processing, and aims at solving the technical problem that in the prior art, the acid and alkali resistance and the bending modulus of a plastic material for fume hood surface decoration need to be further improved. The preparation method specifically comprises the following steps: stirring amino-modified fluorosilicone resin, paraformaldehyde and 1, 4-dioxane in a reaction kettle, dropwise adding an anacardol solution, heating the reaction kettle to 85-95 DEG C, carrying out heat preservation reaction for 6-8 hours, and carrying out post-treatment to obtain the anacardol-based benzoxazine resin. Perfluoro-modified polysiloxane benzoxazine is prepared, naphthalene-containing epoxy resin and imidazole-modified silicon carbide microspheres are compounded, in-situ catalysis synergistic curing is carried out by using filler interface imidazole, a compact organic-inorganic hybrid interpenetrating network is constructed, and the strong acid and alkali corrosion resistance and bending modulus of the material are remarkably improved.

The invention discloses an aluminum oxide coated diaphragm and a preparation method thereof in the field of lithium ion battery diaphragms. The diaphragm comprises aluminum oxide particles, a fluorine-containing porous organosilicon compound, a phosphorus heterocyclic covalent organic framework, a binder, a dispersant and deionized water. The fluorine-containing porous organosilicon compound is prepared by mixing methyltrimethoxysilane, perfluorohexyltrimethoxysilane and water, adding ammonia water to adjust the pH value, then reacting to form a sol-gel system, adding amino silane to continue reacting, and then carrying out rotary evaporation, calcination and grinding. The phosphorus heterocycle covalent organic framework is prepared by dissolving cyanuric chloride, triphenylphosphine oxide and anhydrous tetrahydrofuran, adding imidazole bromide to react to form an intermediate, then adding ethylene glycol to continuously react, and performing vacuum drying and grinding to obtain the phosphorus heterocycle covalent organic framework. According to the diaphragm, the interface adhesion and electrolyte wettability are enhanced synergistically through the bifunctional compound, and the thermal stability and the cycle performance are improved.

The invention discloses an anti-fouling curtain structure for water dredging engineering, and belongs to the technical field of environment protection of dredging engineering, the anti-fouling curtain structure for water dredging engineering comprises a floating body, an anti-fouling curtain and a vertical body, the floating body is arranged at the top end of the anti-fouling curtain, the vertical body is arranged at the bottom end of the anti-fouling curtain, and the anti-fouling curtain is geotechnical cloth; the geotechnical cloth is prepared from the following components in parts by weight: 100 to 150 parts of polyester, 20 to 50 parts of copolyester and 5 to 30 parts of inorganic filler, the copolyester is a copolymer of terephthalic acid, 5-sulfoisophthalic acid sodium salt, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole, and the geotechnical cloth is further prepared by a post-treatment step. According to the invention, the copolyester composed of terephthalic acid, sodium 5-sulfoisophthalic acid, ethylene glycol and dihydroxyl-terminated polyvinyl imidazole and the inorganic filler are added into the polyester fiber, and the polyester fiber is modified through a post-treatment step, so that the alkali resistance and the antifouling property of the antifouling curtain are improved.

The invention discloses an intelligent purification coating with a bionic pulmonary membrane type respiratory metabolism function. The intelligent purification coating comprises a sensing and adsorption layer, a driving and transportation layer and a catalysis and metabolism unit, the sensing and adsorption layer is composed of a chemical heterojunction network formed by two-dimensional transition metal carbonitride MXene and a zeolite imidazate framework structure material through an in-situ coordination reaction of metal ions and hydroxyl groups on the surface of MXene; the driving and transporting layer takes a cross-linked liquid crystal elastomer network as an intelligent response matrix, and high-length-diameter-ratio magnetic ferroferric oxide nanorods of which the surfaces are modified by a silane coupling agent are uniformly dispersed and embedded into the matrix; and the catalysis and metabolism layer is anchored on a preset key mass transfer path in the driving and transporting layer in a discrete metabolism island form. According to the coating, various volatile organic compounds (VOCs) and enzyme-light synergistic deep mineralization can be realized under mild conditions, and the energy metabolism function of mitochondria can be accurately simulated.

The invention discloses a modified polyester fiber as well as a preparation method and application thereof, and relates to the field of fibers. When the modified polyester fiber is prepared, nano shell powder sequentially reacts with 3-aminopropyltrimethoxysilane, 4-fluoro-2-hydroxybenzaldehyde and 1-(4-hydroxyphenyl) biguanide hydrochloride, and functionalized shell powder is prepared; the preparation method comprises the following steps: reacting diethyl (aminomethyl) phosphonate, formaldehyde and glyoxal to prepare imidazolium salt phosphoric acid; and mixing the functionalized shell powder and polyester, spinning, carrying out surface alkali treatment, and finally carrying out surface finishing by using imidazolium salt phosphoric acid to obtain the modified polyester fiber. The modified polyester fiber prepared by the invention has excellent flame retardance, antibacterial property and light aging resistance.

The invention discloses a uniform-size PEG-FA (at) ZIF-8 (at) Fis metal organic framework nano preparation as well as a synthesis method and application thereof, and belongs to the technical field of nano medicines. The nano preparation takes a zeolite imidazate framework material ZIF-8 as a carrier, an antitumor drug fisetin is entrapped in the nano preparation, and polyethylene glycol-folic acid is covalently modified on the surface of the nano preparation. The synthesis method comprises the following steps: synthesizing ZIF-8 (at) Fis through a one-pot method, carrying out surface amination on the ZIF-8 (at) Fis by using an amino silane coupling agent, and reacting with PEG-FA to obtain a final product. The obtained nano preparation is uniform in particle size and good in stability, and has a pH responsive drug release characteristic and a folate receptor mediated active targeting function. Experiments show that the preparation can significantly enhance proliferation inhibition, migration inhibition and apoptosis promotion effects of fisetin on cervical cancer cells, overcomes the problems of poor water solubility and low bioavailability of fisetin, and overcomes the defects of insufficient biosafety and stability of an existing delivery system. And a novel efficient targeting nano-drug delivery system is provided for treating folate receptor high-expression tumors.