29 results about "Vinyl carbazole" patented technology

The present invention relates to a preparation method of a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating. Water, an emulsifier, and methacrylic acid are added to a reaction vessel and stirred for reaction, and then monomer A, DOPO, and N-vinylcarbazole are added; the temperature is raised to 75-85 °C, an initiator is added dropwise, and the reaction is carried out for 1-2 h to obtain a core-layer emulsion; at the same time, all of monomer B and the initiator are added dropwise, and the reaction is stirred for 1-2 h, then DOPO is added, the temperature is lowered to 50 °C, emulsifier B is added, the reaction time is 30-60 min, then N-vinylcarbazole is added, and the reaction is carried out for 0.25-0.5 h. Then, an ammonium polyphosphate solution, aluminum sulfate, and a chitosan / gelatin composite microsphere are added, and high-speed shear emulsification is carried out, and the pH value is adjusted to 7-8 to obtain a flame-retardant, high-refractive-index, melt-drop-resistant water-based acrylate resin coating; the obtained acrylate resin coating has the advantages of a high oxygen index, no melt dripping during combustion, and a high film refractive index.

The invention relates to a preparation method of a flame-retardant, high-refraction and melt-drop-resistant acrylate resin coating, which comprises the following steps: adding water, an emulsifier and methacrylic acid into a reaction container, stirring for reaction, and then adding a monomer A, DOPO and N-vinylcarbazole; heating to 75-85 DEG C, dropwise adding an initiator, and reacting for 1-2 hours to obtain a core-layer emulsion; the preparation method comprises the following steps: adding a monomer A and a monomer B into a reaction kettle, simultaneously dropwise adding all the monomer B and an initiator, stirring and reacting for 1-2 hours, adding DOPO, cooling to 50 DEG C, adding an emulsifier B, reacting for 30-60 minutes, adding N-vinyl carbazole, reacting for 0.25-0.5 hour, adding an ammonium polyphosphate solution, aluminum sulfate and chitosan / gelatin composite microspheres, shearing and emulsifying at a high speed, and adjusting the pH value to 7-8 to obtain the flame-retardant, high-refraction and melt-drop-resistant water-based acrylate resin coating. The obtained acrylate resin coating has the advantages of high oxygen index, no molten drop during combustion and high film refractive index.

The invention discloses a photopolymer type holographic recording medium and a preparation method and application thereof, the photopolymer type holographic recording medium comprises a writing monomer, and the writing monomer comprises epoxy resin and a polymerizable monomer, the polymerizable monomer is selected from an alkenyl naphthalene compound, an alkenyl anthracene compound, an alkenyl benzene compound, an acrylic acid compound, a methacrylic acid compound, an acrylate compound, a methacrylate compound, N-vinyl pyrrole, N-vinyl carbazole, N-vinyl imidazole, N-vinyl indole and N-vinyl pyrrolidone; the carbazole is at least one of trans-N-3-alkyne butenyl carbazole. According to the epoxy resin disclosed by the invention, the volume shrinkage of the polymerizable monomer after polymerization can be effectively reduced, the cationic polymerization of the epoxy resin can be accelerated while the polymerizable monomer forms free radical polymerization, and the photopolymer type holographic recording medium disclosed by the invention is high in light sensitivity, stable in holographic performance and high in volume holographic grating diffraction efficiency.

The invention discloses an anti-ultraviolet polylactic acid fiber as well as a preparation method and application thereof, and belongs to the technical field of polylactic acid fibers. The polylactic acid fiber is prepared by mixing, melting and spinning modified polylactic acid slices and a plasticizer. Wherein the modified polylactic acid slice is prepared from the following raw materials in parts by mass: 60 to 80 parts of polylactic acid, 15 to 25 parts of graft modified polylactic acid and 5 to 10 parts of modified zinc oxide. The graft modified polylactic acid is a product obtained by introducing a carbazole group on a polylactic acid molecular chain by polylactic acid and vinylcarbazole through a free radical graft polymerization method, and the modified zinc oxide is obtained by loading polydopamine on zinc oxide and grafting lipoic acid. According to the modified polylactic acid slice provided by the invention, graft modified polylactic acid and modified zinc oxide are added on the basis of a polylactic acid matrix, so that the anti-ultraviolet performance of polylactic acid fibers is enhanced, ultraviolet aging is delayed, the ultraviolet transmittance is reduced and the application of the polylactic acid fibers in outdoor textiles is expanded under the action of multiple mechanisms.

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 application belongs to the field of organic solar cell materials, and discloses an organic photoelectric compound based on a vinylcarbazole phosphonic acid structure and a preparation method and application thereof, the organic photoelectric compound has the following four structures: The organic photoelectric compound based on the vinylcarbazole phosphonic acid structure of the application forms firm chemical bonding with a metal oxide electrode (such as ITO or ZnO) through a phosphonic acid group, effectively passivates surface defects, and optimizes energy level alignment; meanwhile, the polymer main chain endows the material with excellent film-forming property and covering capacity, can form a uniform, dense and stable interface layer on the electrode, thereby significantly inhibiting charge recombination, improving carrier selective transmission efficiency, and enhancing the stability of the device in long-term operation and complex environment. The system provides an effective material solution for constructing an OPV device with high performance, high stability and suitable for large-area processing.

The present invention relates to the field of optical imaging, and in particular to a method for preparing a near-infrared ratiometric fluorescent probe for biothiols based on carbazole and its application. The preparation method of the above-mentioned near-infrared ratiometric fluorescent probe is as follows: (E)-9-ethyl-3-(2-(quinoline-4-yl)vinyl)-9H-carbazole and 7-(bromomethyl)-3,3a-dihydrocyclopenta[b]chroman ring-1(2H)-one react in acetonitrile to generate (E)-4-(2-(9-ethyl-9H-carbazole-3-yl)vinyl)-1-((1-oxo-1,2,3,3a-tetrahydrocyclopenta[b]chroman ring-7-yl)methyl)quinoline-1-ammonium bromide. The fluorescent probe not only has a simple synthesis route, strong operability, easy raw materials, low cost, but also can quickly detect biothiols in living cells, with high sensitivity, good selectivity and large Stokes shift; in addition, it can also be targeted to mitochondria.

This invention belongs to the field of responsive material production technology, specifically relating to a high-viscosity fluoropolymer solution and its applications. The preparation method of the high-viscosity fluoropolymer solution is as follows: (meth)acrylate naphthyl ester, fluorinated methacrylate, and vinylcarbazole are dissolved in a solvent and stirred to obtain a clear and transparent solution. Then, an initiator is added, and the mixture is heated to 60-90℃ under magnetic stirring for 16-24 hours to polymerize. After the reaction is completed, a transparent high-viscosity polymer solution with a viscosity range of 800-8000 Pa·s is obtained. After the high-viscosity fluoropolymer solution forms a film on the substrate, it forms an anti-counterfeiting coating that can be stimulated by ultraviolet light and trifluoroacetic acid, exhibiting excellent multi-stimulus responsiveness. The preparation method of this anti-counterfeiting coating is simple, has good film-forming properties, long service life, and low cost. It can be industrially produced and provides dual anti-counterfeiting capabilities, showing great application prospects in anti-counterfeiting, information encryption, and other fields.

The invention relates to a natural gas hydrate inhibitor and a preparation method thereof, and belongs to the technical field of natural gas hydrate inhibitors. According to the natural gas hydrate inhibitor and the preparation method thereof, a continuous flow reaction device is utilized, N-vinylcaprolactam and N-vinylcarbazole are taken as monomers, a copolymerization reaction is carried out in the presence of a specific catalyst and a cross-linking agent, and an N-vinylcaprolactam / N-vinylcarbazole copolymer PVCap-VC is synthesized to serve as a novel hydrate inhibitor. According to the invention, two monomers with high steric hindrance effect are combined to synergistically inhibit the growth and aggregation of hydrate crystal nucleus. The obtained product has the advantages of low addition amount, good inhibition effect, environmental protection and economy. The method is simple and convenient in process, high in reaction efficiency, controllable in product molecular weight and suitable for large-scale continuous production.

The invention relates to a high-voltage-resistant anti-breakdown automobile wire sheath and a preparation method thereof, and relates to the technical field of automobile wire harnesses, and the high-voltage-resistant anti-breakdown automobile wire sheath comprises a modified styrene-ethylene-butylene-styrene block copolymer, polypropylene, functionalized magnesium hydroxide, melamine polyphosphate, white oil and a functional auxiliary agent. An N-vinylcarbazole group grafted on a styrene-ethylene-butylene-styrene block copolymer molecular chain is used as an electron donor, an anthraquinone derivative chemically bonded on the surface of a magnesium hydroxide particle is used as an electron acceptor, and the N-vinylcarbazole group and the anthraquinone derivative form a large number of charge transfer complexes at an interface through pi-pi interaction. According to the charge transfer complexes, a high-density deep energy level trap is introduced into an energy band structure of the material, so that the charge behavior of the material in a high electric field is changed, and high-performance high-voltage-resistant and anti-breakdown effects are realized.

This application provides a vinylcarbazole-based anion exchange membrane, its preparation method, and its application, belonging to the field of anion separation membrane technology. The vinylcarbazole-based anion exchange membrane is prepared by copolymerization of vinylcarbazole, piperidinone, and terphenyl monomers, possessing a poly(vinylcarbazole-arylpiperidine) backbone structure. By controlling the content of vinylcarbazole monomer, this application can effectively regulate the interchain spacing of the polymer within the membrane and construct densely interconnected ion channels. Utilizing precise interchain spacing sieving, the Donnan repulsion effect, and the synergistic effect of charge-assisted hopping conduction at the nitrogen center of carbazole, this vinylcarbazole-based anion exchange membrane simultaneously achieves high proton flux and high metal ion rejection rate during diffusion dialysis. The membrane exhibits excellent performance in HCl / FeCl2 and H2SO4 / FeSO4 mixed acid / metal ion systems, and possesses good anti-swelling and durability, making it effective for the recovery of industrial waste acids, such as those used in metal processing.

The invention relates to the field of heavy metal ion detection, in particular to a preparation method and application of a mercury ion colorimetric and ratiometric fluorescent probe based on carbazole. The preparation method of the colorimetric and ratiometric fluorescent probe comprises the following step: carrying out reaction on O-(4-(bromomethyl) phenyl) diphenyl selenophosphonate and (E)-9-ethyl-3-(2-(quinoline-4-yl) vinyl)-9H-carbazole in acetonitrile to generate (E)-1-(4-((diphenyl selenophosphoryloxy) benzyl)-4-(2-(9-ethyl-9H-carbazole-3-yl) vinyl) quinoline bromide. The fluorescent probe has the advantages of simple synthesis route, strong operability, easily available raw materials and low cost, can realize rapid detection of mercury ions by using colorimetric and change of the ratio F528nm / F648nm of fluorescence intensities at two different emission wavelengths, and has the advantages of large Stokes shift, high sensitivity, good selectivity and the like.

The invention relates to a silica gel composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The silica gel composite material comprises the following components in parts by weight: 80-120 parts of methyl vinyl silicone rubber, 10-25 parts of vinyl silicone oil, 15-25 parts of titanium dioxide, 2-8 parts of a modifier, 2-6 parts of a foaming agent and 2-6 parts of a cross-linking agent, the quaternary ammonium salt in the modifier can eliminate static electricity of a material, N-vinylcarbazole is combined with anions on the surfaces of cell membranes of bacteria and molds, a synthetic system of protein and the cell membranes is destroyed, the N-vinylcarbazole and the quaternary ammonium salt cooperate to improve the antibacterial effect, thiourea of an intermediate has good ozone aging resistance and thermal oxidation resistance, free radicals can be captured, a chain reaction can be terminated, and the service life of the material is prolonged. The phosphorus-nitrogen flame retardant and the carbamate bond are synergistically flame-retardant, so that the service life of the composite material is prolonged; the silica gel composite material prepared by the invention not only has good antibacterial and anti-aging effects, but also has an excellent flame-retardant effect.

The application discloses a kind of high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage, belong to medical porous hydrogel technical field, specifically related to monomer, crosslinking agent and initiator are added to water and mixed to obtain the reaction solution of temperature-sensitive hydrogel, freeze polymerization obtains ice gel;Ice gel is placed in salt solution and is handled to obtain porous hydrogel;Monomer includes at least one of N-isopropyl acrylamide, N-vinyl caprolactam, N,N-diethyl acrylamide, N-vinyl carbazole, acrylic acid, methyl methacrylate, ethylene glycol methyl ether acrylate, butyl methacrylate, maleic anhydride and styrene.The application provides a kind of temperature-sensitive effect, can be dynamically controlled by electric heating, good mechanical property, good drainage effect high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage.

The present invention provides a method of inkjet printing, comprising: (i) inkjet printing an inkjet ink on to a substrate, wherein the ink comprises: 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; one or more difunctional monomers; and a radical photoinitiator; and (ii) curing the ink by exposing the printed ink to a UV radiation source, wherein the UV radiation source moves relative to the substrate at a speed of 70 m / min or more.

The invention belongs to the technical field of photocuring materials, and particularly relates to a photoinitiator composition taking an osmium metal complex as an electron transfer photosensitizer and application of the photoinitiator composition to induction of free radical, cation and hybrid polymerization in a full wave band. The invention provides a full-wave band response type photoinitiator based on osmium metal complexes (such as Os-diphen and Os-phen). The full-wave band response type photoinitiator is composed of an osmium complex photosensitizer and iodonium salt (or iodonium salt + N-vinyl carbazole). And full-wave band light response from ultraviolet to near infrared (365-690 nm) is realized. An efficient photo-induced electron transfer (PET) mechanism is established, and free radical and cation polymerization can be initiated at the same time. Under the irradiation of 690 nm red light, the double bond conversion rate of the system to an acrylate monomer can reach 51%, and deep curing of 23 cm is realized; the sunlight-driven polymerization reaction is successfully realized, and the application potential in the fields of deep curing, 3D printing, solar photopolymerization and the like is shown.

The invention discloses a negative electrode film for a lithium battery, characterized in that it comprises the following components by weight: 60-98 parts of active material, 1-40 parts of adhesive, and 0.1-5 parts of conductive agent; the active material is a mixture formed by mixing carbon material, lithium titanate, nano chromium nitride, and porous nano tin dioxide in a mass ratio of (3-5): 0.8: (0.1-0.3): 0.2; the adhesive is N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, N-trimethylol methacrylamide, allyl furoate, and N-vinyl carbazole through free radical polymerization. The invention also discloses a method for preparing the negative electrode film for a lithium battery. The preparation process of the negative electrode film for a lithium battery disclosed in the invention does not require the treatment of waste gas, has no residual solvent, has a higher compaction density, a short process cycle, is not easy to lose powder on the surface, and can effectively improve the energy density and cycle life of the battery.

Provided is an optically anisotropic laminate comprising a first optically anisotropic layer and a second optically anisotropic layer, wherein: the first optically anisotropic layer satisfies formula (1); the second optically anisotropic layer satisfies formulas (2) and (3); the NZ coefficient NZ2 of the second optically anisotropic layer satisfies formula (4); the optically anisotropic laminate satisfies formula (5); and the second optically anisotropic layer contains a resin containing a polymer containing an N-vinylcarbazole monomer unit.　(1): nx1 > ny1 ≥ nz1 (2): nz2 > nx2 > ny2 (3): Re2(550) > 100 nm (4): NZ2 < -0.2 (5): Re(450) < Re(550) < Re(650)

The invention discloses an adhesive for polarizer and a preparation method thereof, relates to the technical field of adhesives, and is prepared from the following components by weight: 25-35 parts of hyperbranched perfluoropolyether polyurethane acrylate oligomer, 3-5 parts of vinyl ethylene carbonate, 2-4 parts of isocyanoethyl methacrylate, 2-4 parts of N-vinyl carbazole, 1-3 parts of styrene, 3-5 parts of dicyclopentene methacrylate, 3-5 parts of 3,9-divinyl-2,4,8,10-tetraoxaspiro[5.5]undecane, 1-2 parts of tetrahydroxymethyl glycoluril, 15-25 parts of diluent, 0.5-4 parts of photoinitiator, 0.2-0.6 parts of catalyst, and 2-5 parts of auxiliary agent. The adhesive for polarizer has good bonding performance, good water resistance and weather resistance, sufficient light transmittance, excellent high temperature and humidity resistance and water vapor barrier performance.

The invention discloses an electromagnetic shielding fabric and a preparation method thereof, and relates to the technical field of textile fabrics. When the electromagnetic shielding fabric is prepared, 3, 9-dichloro-2, 4, 8, 10-tetraoxa-3, 9-diphosphospiro [5.5] undecane-3, 9-dioxide and formic acid are subjected to a reaction, then the reaction product and tetramethyl divinyl disiloxane are polymerized, and a phosphorus-silicon synergistic flame retardant is prepared; the preparation method comprises the following steps: polymerizing carbazole and N-vinyl carbazole, and depositing on magnesium hydroxide to prepare polycarbazole coated magnesium hydroxide; the preparation method comprises the following steps: sequentially reacting 3-allyl-2-hydroxybenzaldehyde with tyrosine and dimethyl tin chloride to prepare an organic tin antibacterial agent; reacting polystyrene with chloromethyl methyl ether and an organic tin antibacterial agent in sequence to prepare modified polystyrene; preparing a spinning solution from the modified polystyrene, the polycarbazole coated magnesium hydroxide and the phosphorus-silicon synergistic flame retardant, and performing wet spinning and spinning by a spinning machine to obtain the electromagnetic shielding fabric. The electromagnetic shielding fabric prepared by the invention has excellent electromagnetic shielding, antibacterial, flame-retardant and mechanical properties.

The invention discloses an acid-resistant protective film adhesive tape, and relates to the technical field of protective film adhesive tapes, the acid-resistant protective film adhesive tape comprises a base material layer, a composite adhesive layer and a nano modified release layer, and the composite adhesive layer is located between the base material layer and the nano modified release layer; the composite adhesive layer is prepared from the following raw materials in parts by weight: 40-50 parts of fluorosilicone polyurethane acrylic resin, 3-5 parts of N-(4-cyano-3-trifluoromethylphenyl) methacrylamide, 3-5 parts of (perfluoropropane-2, 2-diyl) bis (4, 4 '-difluoro-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4-trimethyl-1, 3, 4- The invention relates to a UV (ultraviolet) photoinitiator, which is prepared from the following components in parts by weight: 1 to 3 parts of 1, 1-phenylene) diacrylate, 2 to 4 parts of N-vinylcarbazole, 5 to 8 parts of nano silicon dioxide, 1 to 3 parts of coupling agent, 0.8 to 1.2 parts of photoinitiator and 30 to 40 parts of diluent. The acid-resistant protective film adhesive tape has the advantages of excellent acid-resistant effect, good adhesion and no acid liquid pollution, and can effectively make up the segment difference.

The invention discloses a method for preparing a QD pattern based on micromolecule room temperature crosslinking and a QLED photoetching device prepared by the method, and belongs to the technical field of quantum dot (QD) nanotechnology patterning display. The preparation method comprises the following steps: introducing a small molecular material 4, 4 '-bis (3-vinyl-9H-carbazole-9-yl)-1, 1'-biphenyl (CBP-V) and a photoinitiator 2, 2-dimethoxy-2-phenylacetophenone (DMPA) into a QD solution, so that the QD mixed solution has a photosensitive characteristic; under the condition of room temperature, CBP-V is promoted to generate cross-linking reaction through selective exposure of a handheld ultraviolet lamp, so that a cross-linking network is directly formed in a QD layer, the QD is firmly fixed in a grid, the solubility of the QD in an original solution is further changed, direct photoetching patterning of the QD is realized through development, and a high-resolution and high-precision QD pattern is obtained. And a QLED photoetching device with high performance is prepared.

The invention relates to the technical field of optical films, and discloses a high-brightness brightness enhancement film of a multi-layer composite structure and application of the high-brightness brightness enhancement film. The bright enhancement film comprises a base material and a cured resin layer attached to the surface of the base material. The cured resin layer has a microprism structure and is formed by curing a photocuring composition containing a basic high-refractive-index prepolymer, N-vinylcarbazole, N-phenylmaleimide, acrylic acid-2-carboxyethyl ester and a photoinitiator. The preparation method comprises the following steps: firstly, mixing acrylic acid-2-carboxyethyl ester with N-phenylmaleimide, adding N-vinylcarbazole for reaction to construct a charge transfer complex, then adding a prepolymer for compounding, and finally coating and carrying out mould pressing curing. According to the invention, N-vinylcarbazole and N-phenylmaleimide are introduced to form a charge transfer complex to initiate alternate copolymerization, so that a resin layer has electron groups arranged in order, and the refractive index and brightness are improved; meanwhile, the curing shrinkage rate is reduced through alternate copolymerization, and the optical forming precision of the microprism structure is guaranteed.

The invention relates to the technical field of fuel additives, and particularly discloses a bio-based plant active fuel additive which comprises the following raw materials in parts by weight: 100-200 parts of vegetable oil, 10-20 parts of a pour point depressant, 2-8 parts of an antioxidant and 1-5 parts of a surfactant. The vegetable oil is one or more of palm oil, soybean oil, castor oil, jatropha curcas oil, coconut oil, sunflower seed oil, rapeseed oil and olive oil; the pour point depressant is prepared by polymerizing tetradecyl methacrylate, benzyl cinnamate and N-vinyl carbazole; the obtained fuel oil additive not only has excellent low-temperature fluidity and oxidation stability, but also contains a large number of plant active ingredients, is green, environment-friendly and degradable, can be directly added into a fuel oil tank of an internal combustion engine for use, improves the quality of fuel oil, reduces the oil consumption, improves the lubricity of the fuel oil, and prolongs the service life of the engine.

The invention discloses a high-strength carbon fiber synchronous belt and a preparation method thereof, comprising a synchronous belt skeleton and a synchronous belt film wrapped on the outside thereof, wherein the synchronous belt film is made of the following raw materials: hydrogenated nitrile rubber, ethylene acrylate rubber, fluorinated ethylene propylene rubber, (perfluoropropane-2,2-diyl)bis(4,1-phenylene) diacrylate, bis(1-vinyl imidazole-2-) ketone, 2,4,6-trivinyl cycloboroxine, 1,3-bis(oxiranylmethyl)-5-(2-propylene)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, N-vinyl carbazole, 4,4-chloroformylphenyl ether, catalyst, coupling agent, inorganic filler, stearic acid, antioxidant, vulcanizing agent, anti-scorch agent, and waste polyaromatic oxadiazole fiber. The synchronous belt has good mechanical properties, excellent wear resistance, heat aging resistance and cold resistance, good performance stability and long service life.

The invention discloses a solar cell based on a perovskite absorption layer and a preparation method thereof, and the method comprises the following steps: 1, carrying out the spin coating of a tin dioxide precursor solution on the surface of a substrate layer, and obtaining an electron transmission layer after annealing; 2, spin-coating a perovskite precursor solution on the surface of the electron transport layer; dropwise adding an anti-solvent solution of polyvinyl carbazole or a mixed solution composed of vinyl carbazole, an initiator and an anti-solvent on the surface of the wet film, and performing annealing treatment to obtain a perovskite layer and a polyvinyl carbazole layer attached to the surface of the perovskite layer; 3, spin-coating a hole transport layer solution on the surface of the polyvinyl carbazole layer, and standing to obtain a hole transport layer; and 4, evaporating the first electrode and the second electrode to obtain the required solar cell. According to the invention, the problem of crystal boundary generated in the film crystallization process can be solved, and the problem of surface defects of the film can be solved, so that a high-quality perovskite absorption layer can be prepared, and the perovskite absorption layer can be used for preparing an efficient perovskite solar cell device.

The present invention belongs to the technical field of responsive materials and specifically relates to a high-viscosity resin coating for visual detection of hydrogen fluoride, a preparation method thereof, and an application thereof. The coating comprises, by weight percentage, 10-50 wt% of acrylate, 0-30 wt% of vinyl ether, 2-40 wt% of vinyl carbazole, 0.1-10 wt% of initiator, and the remainder of solvent. The coating is evenly applied on the outer wall of a hydrogen fluoride storage tank. Upon contact with hydrogen fluoride, the coating rapidly responds to color change within 5 seconds, enabling timely detection of hydrogen fluoride leakage and preventing safety accidents.

The invention discloses a fluorine-containing polymer, the fluorine-containing polymer comprises a vinylidene fluoride structural unit and a photoelectric conjugated compound structural unit, and the photoelectric conjugated compound is selected from at least one of N-vinyl carbazole, vinyl naphthalene, vinyl thiophene or vinyl anthracene. According to the fluorine-containing polymer piezoelectric film obtained by carrying out extrusion stretching, alternating current electric field pre-polarization and ultrasonic condition secondary polarization on the fluorine-containing polymer, the piezoelectric property is improved, and the piezoelectric property can still be kept at high temperature.

The invention discloses high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage, belongs to the technical field of medical porous hydrogel, and particularly relates to a temperature-sensitive hydrogel reaction solution obtained by adding a monomer, a cross-linking agent and an initiator into water and mixing, and freezing and polymerizing to obtain ice gel; treating the ice gel in a salting-out solution to obtain porous hydrogel; the monomer comprises at least one of N-isopropylacrylamide, N-vinyl caprolactam, N, N-diethyl acrylamide, N-vinyl carbazole, acrylic acid, methyl methacrylate, ethylene glycol methyl ether acrylate, butyl methacrylate, maleic anhydride and styrene. The invention provides the high-strength deformable porous hydrogel for postoperative abdominal cavity tissue effusion drainage, which has a temperature-sensitive effect, can be dynamically controlled through electric heating, and has good mechanical properties and a good drainage effect.