453 results about "Azobenzene" patented technology

The invention relates to the technical field of biodegradable materials, and discloses a full-biodegradable bamboo fiber film material and a preparation method thereof, the full-biodegradable bamboo fiber film material comprises the following raw materials by weight: 30-50 parts of modified bamboo fiber, 20-40 parts of a biodegradable polymer, 3-8 parts of a plasticizer, and 1-5 parts of a cross-linking agent. Acrylic acid grafted hydroxyethyl methylacrylate is grafted to epoxy resin containing azobenzene side chains to form a grafting product of a latticed structure, and the grafting product and hydroxyl groups on bamboo fibers form ether bonds to modify the bamboo fibers. The latticed structure can effectively improve the mechanical property of the film, and azobenzene is grafted to the side chain of bisphenol A epoxy resin, so that the epoxy resin has better degradability.

The preparation method comprises the following steps: by taking 2, 2 '-[4-(4-aminophenylazo) phenylimine] diethanol and phenol as raw materials, preparing a bisazobenzene compound according to a molar ratio of 1: 1, carrying out nucleophilic substitution on the compound and alkyl bromide according to a molar ratio of 1: 1 to prepare a bisazobenzene monomer, and carrying out side-chain type photoresponse bisazobenzene polyurethane on the bisazobenzene monomer to prepare the side-chain type photoresponse bisazobenzene polyurethane. And carrying out a reaction on the bisazobenzene monomer and diisocyanate urethane to obtain the side chain type photoresponse bisazobenzene polyurethane. The bis-azobenzene polyurethane has obvious trans-cis configuration change along with the increase of ultraviolet irradiation time in a tetrahydrofuran solution, and gradually recovers the trans configuration under the irradiation of visible light. Besides, the bisazobenzene polyurethane and polyurethane are subjected to melt blending to prepare a composite material film, and the composite material film has an obvious light-induced bending phenomenon under ultraviolet irradiation.

The invention relates to the technical field of flocculants, in particular to a composite flocculant containing a cationic etherifying agent and a preparation method of the composite flocculant, and the composite flocculant is prepared from the following raw materials in parts by weight: 15-20 parts of carboxymethyl guar gum, 12-15 parts of cationic konjac glucomannan, 1.2-1.5 parts of the cationic etherifying agent, 1.8-2.2 parts of a magnetic polysilicate metal salt flocculant and 0.2-0.3 part of a preservative. According to the present invention, by compounding the flocculant, the flocculated floc has magnetism and can be recovered and repeatedly utilized, and the photoresponse azobenzene structure is grafted in the cationic konjac glucomannan, such that the controllable pollutant aggregation and separation can be achieved, and the good flocculation performance can be maintained after the composite flocculant is repeatedly recovered and repeatedly utilized.

The invention is applicable to the technical field of intelligent response materials, and provides a three-dimensional azobenzene functionalized covalent organic framework intelligent response material and a preparation method thereof. The three-dimensional azobenzene functionalized covalent organic framework intelligent response material is prepared by uniformly grinding 3, 3 ', 5'-tetra [(3 ', 5'-diformylphenyl)]-hexamethyl biphenyl and azobenzene-4, 4 '-diaminotriphenylamine, adding an organic solvent, adding a catalyst acetic acid aqueous solution, quickly freezing, emptying air, sealing with flame, heating after recovering to room temperature, and obtaining the three-dimensional azobenzene functionalized covalent organic framework intelligent response material. According to the invention, the azobenzene functionalized covalent organic framework material with a bcu topological structure is synthesized; the material has excellent photostimulation response CO2 adsorption performance; reversible control of CO2 adsorption capacity can be realized through ultraviolet light and heating conditions, at least five times of circulation can be maintained, and good circulation stability is achieved.

The invention discloses a preparation method of a photoresponsive self-cleaning optical coating with a dynamic self-repairing function. The preparation method comprises the following steps: adding a monomer containing a Diels-Alder reaction bond into a polyurethane prepolymer, and reacting to obtain the polyurethane elastomer with self-repairing capability. An azobenzene derivative is connected to a polyurethane elastomer through a covalent bond, and the photoresponsive self-repairing polymer is obtained. Hydrophobically modified TiO2 nanoparticles are prepared in situ through a sol-gel method. In order to further improve the dispersity of the TiO2 nanoparticles in the polymer, a silane coupling agent is adopted to carry out surface modification on the TiO2 nanoparticles. The preparation method comprises the following steps: mixing a photoresponsive self-repairing polymer and a TiO2 nanoparticle dispersion liquid in proportion, uniformly stirring, coating the mixed liquid on the surface of a base material, forming a uniform coating through a brush coating or spray coating method, and curing the coating at a proper temperature. Due to the excellent characteristics of light response self-repairing, ultraviolet resistance, wear resistance and the like, the coating can keep a long transparent period and good antifouling durability in an outdoor environment.

The invention provides a preparation method of a photoresponse thin film material, the photoresponse thin film material and an ultraviolet light monitoring device and system.The method comprises the steps that 4, 4 '-dihydroxy hexyloxy azobenzene is added into a polymer formed by polymerizing a dihydroxy oligomer and a diisocyanate-based monomer, polyurethane containing azobenzene groups is obtained, and the polyurethane containing the azobenzene groups is added into the polymer to obtain the photoresponse thin film material. The preparation method comprises the following steps: dissolving polyurethane and a piezoelectric polymer in a high-boiling-point solvent to obtain an electrospinning solution, and carrying out electrostatic spinning by adopting the electrospinning solution to obtain the photoresponse film material. According to the invention, 4, 4 '-dihydroxy hexyloxy azobenzene containing six-carbon spacer is used as a chain extender and is added into a polymer of a dihydroxy oligomer and a diisocyanate-based monomer to obtain azobenzene group-containing ultraviolet light response polyurethane, and then the polyurethane and a piezoelectric polymer are combined, so that the ultraviolet light response performance of the piezoelectric polymer is improved. The photoresponse thin film material with better flexibility, better mechanical property and good ultraviolet response is prepared, the preparation process of the photoresponse thin film material is simple, and the preparation cost is low.

This invention discloses a visible-light-responsive dynamically covalently cross-linked self-healing polyurethane and its preparation method, belonging to the field of self-healing materials technology. The material is prepared by reacting diisocyanate, long-chain diol, butanediol, trimethylolpropane, and a monool containing an azophenylboronic acid structure in a certain proportion at 60°C. This invention achieves visible-light-responsive self-healing of the polyurethane material by introducing a visible-light-responsive azophenylboronic acid structure into the polyurethane and utilizing the photoresponsive cis-trans isomerization of the azo structure to regulate the reversible breakage and recombination of the boron-oxygen hexacyclic ring. The visible-light-responsive dynamically covalently cross-linked self-healing polyurethane material prepared by this invention maintains high mechanical strength (16.47 MPa) while exhibiting a strength self-healing efficiency of 95.8% after 8 hours of visible light irradiation, showing broad application prospects in smart materials, anti-corrosion coatings, and other fields.

A liquid crystal elastomer (LCE) formed from liquid crystalline monomers having 4-(6-(acryloyloxy)n-oxy)phenyl-4-(6-(acryloyloxy)m-oxy)benzoate (CnBAPE) as the mesogenic core. The LCEs have improved thermotropic characteristics, including lower thermotropic activation temperatures. The LCEs may also incorporate azobenzene to thereby also enhance the phototropic properties of the LCE.

The invention discloses a low-temperature-resistant organic silicon elastic damping body and a preparation method thereof, and belongs to the field of synthesis of organic polymer materials. The invention relates to a high-efficiency photoinitiator, which is prepared from the following ingredients in parts by weight: 95 to 110 parts of fluorosiloxane-phenylsiloxane segmented copolymers, 25 to 35 parts of boric acid ester end-capped polyurethane prepolymers, 10 to 15 parts of neodymium-containing metal organic frameworks, 20 to 40 parts of azobenzene modified CNT / TiO2, 2 to 4 parts of photoinitiators 1173 and 2 to 3 parts of neodymium acetylacetonate. Ultralow-temperature adaptability, self-repairing and high-modulus coexistence and wide-temperature-range damping stability are achieved through fluorosilicone / phenyl block copolymer molecular design, a borate-neodymium coordination double-dynamic network, stress response filler and a light-heat gradient curing process. The low-temperature-resistant organic silicon elastic damping body prepared by the invention provides a new solution idea for an extreme environment damping material, and has a wide application prospect.

The invention discloses an azobenzene polymer material and an application of the azobenzene polymer material in nanoimprint lithography. The azobenzene polymer is prepared by adopting a one-step simple ring-opening metathesis polymerization method, is endowed with excellent thermal stability and light stability, and can keep excellent performance under the conditions of high temperature and sunlight irradiation. Compared with the traditional nanoimprint photoresist, the nanoimprint photoresist provided by the invention has higher stability and precision in the nanoimprint process, can effectively reduce the problems of distortion, blurring and the like of an imprint pattern, and ensures the accuracy of nanostructure transfer printing. The finished product quality and the production efficiency are improved, and meanwhile, the uncertainty and the cost in the manufacturing process are reduced.

The invention discloses a polaroid for brightening sheet roll material compounding. The polaroid comprises a first release film, pressure-sensitive glue, a first cellulose triacetate layer, a polyvinyl alcohol layer, a second cellulose triacetate layer, a special functional layer and a second release film, the polyvinyl alcohol layer is positioned between the first cellulose triacetate layer and the second cellulose triacetate layer; the first release film covers the surface of one side of the first cellulose triacetate layer through pressure-sensitive glue; the special functional layer is coated on the surface of one side of the second cellulose triacetate layer, the second release film covers the special functional layer, and the special functional layer is prepared from an azobenzene side chain type liquid crystal polymer or a polymer stable liquid crystal material. According to the invention, the direct on-line roll-to-roll composite production of the polaroid roll material and the brightness enhancement film roll material is realized, additional manual slitting, splicing and material receiving procedures are not needed, and the product yield and the production efficiency are greatly improved.

The invention provides a photo-thermal response T-type liquid crystal molecule, a preparation method thereof and application of the photo-thermal response T-type liquid crystal molecule to an intelligent window. The structural formula of the T-type liquid crystal molecule is shown in the formula (1). According to the technical scheme, the liquid crystal molecule is in a T type, an azobenzene structure in the liquid crystal molecule is subjected to reversible conversion of cis and trans under switching of ultraviolet light and visible light, and meanwhile, a molecular structure of 8CB and a butylene adipate structure can be subjected to phase change at room temperature, so that the molecule has a light response function, and meanwhile, the light response effect of the molecule is improved. The material also has a thermal response function at room temperature; besides passive control through light and heat, after electrification, liquid crystal molecules are arranged in order, an electric response function is achieved, and the intelligent window can be actively recovered to be transparent. The molecule not only has multiple responses, but also is a low-carbon environment-friendly material. According to the technical scheme, the alkoxy chain is linked to the side chain of the liquid crystal molecule, asymmetry is increased, the liquid crystal molecule has a richer phase structure, and the liquid crystal molecule has a huge development prospect in the field of intelligent windows.

The invention discloses a carrier material with a photoresponse controlled release function, a preparation method of the carrier material and application of the carrier material in bio-based active packaging. According to the carrier material with the photoresponse controlled release function, an equal-net-shaped metal organic framework material-3 (IRMOF-3) is used as a matrix, and a photoisomerization group azobenzene is modified on the IRMOF-3 through functional modification, so that the carrier material with the photoresponse controlled release function is obtained; the carrier material is used for loading carvacrol and then is added into a sodium alginate-based film to prepare the bio-based active packaging film with photoresponse carvacrol release control performance, and meanwhile, the prepared packaging film has good tensile property, hydrophobic property and barrier property.

The invention provides a high-efficiency low-pollution cow dung returning treatment method, which comprises the following steps: adding corn straw and charcoal into cow dung, preparing a fermentation base material, inoculating a compound fermentation inoculant, and carrying out composting fermentation to prepare a cow dung organic fertilizer. The composite microbial inoculant adopts an inner and outer double-film coating structure, aerobic bacteria are embedded in the middle, are released in the early stage of composting, quickly enter a high-temperature stage and decompose and metabolize organic matters, anaerobic bacteria are embedded in the innermost layer, and an inner film coating material adopts composite modified waterborne polyurethane, so that the composite microbial inoculant has a good anti-bacterial effect. Azobenzene and waxberry tannin combined modification endows the membrane structure with the characteristics of low-oxygen cracking, normal-oxygen stability and no influence of enzyme, anaerobic bacteria are released under the low-oxygen condition in the high-temperature last stage and the decomposition period, decomposition of residual cellulose can be promoted, carbon and nitrogen loss caused in anaerobic fermentation is prevented, the speed of converting organic matter into humus is increased, and the yield of the organic matter is increased. Meanwhile, the inner film packing material reacts with the organic acid and the ethanol, so that the quality of the cow dung organic fertilizer is further ensured.

The invention discloses a multifunctional nano-carrier with drug resistance, biotin receptor targeting and hypoxia / low pH dual responsiveness and a preparation method and application thereof, and belongs to the technical field of biomedical polymer materials. The AGT inhibitor conjugate with biotin receptor targeting and low oxygen and low pH dual response provided by the invention comprises a hydrophobic 2-amino-O4-benzyl pteridine group (BD), a low oxygen response group azobenzene (AZO) and a hydrophilic high polymer material modified by biotin (Bio). According to the system, hydrophobic chemotherapeutic drugs can be loaded in a drug carrying system through intermolecular acting force, target biotin receptors on tumor cells and are enriched in tumor tissues by utilizing high permeability and long-term effectiveness of the hydrophobic chemotherapeutic drugs; the tumor microenvironment characterized by low oxygen and low pH can induce azo bond breakage and pH response on the nano-carrier to release BD with AGT activity inhibition and an alkylating agent with anti-tumor activity, so that the drug resistance and anti-tumor activity of the drug are improved, and the targeting property is increased.

The invention relates to a copolymerized polyurethane material with a photo-electro-mechanical effect as well as a preparation method and application thereof, and belongs to the technical field of self-powered energy conversion. The preparation method comprises the following steps: S1, synthesizing bis (p-hydroxyethyl) azobenzene; s2, synthesis of azobenzene polyurethane is carried out; s3, synthesis of diethanol amine bromine salt; s4, synthesizing quaternary ammonium salt ionic liquid based polyurethane; s5, synthesizing azobenzene-quaternary ammonium salt ionic liquid copolymerized polyurethane; and S6, preparing the copolymerized polyurethane material. In the application which is prepared from the copolymerized polyurethane material and has the photoelectric effect, the quaternary ammonium salt ionic liquid is used for replacing imidazole ionic liquid, so that the influence of cytotoxicity of the quaternary ammonium salt ionic liquid can be effectively weakened or avoided, and the quaternary ammonium salt ionic liquid can be directly used as a nano-generator without polarization treatment and has better flexibility and ductility.

The invention belongs to the technical field of energy storage materials, and particularly relates to an azobenzene derivative and application thereof. Compared with common azobenzene, the azobenzene derivative provided by the invention has the advantages that the absorption peak moves towards the long wavelength direction, and red shift occurs; the half-life period and the energy storage density are excellent, so that absorption, conversion and storage of solar energy are facilitated; the azobenzene can be used in the field of energy storage fabrics or photoinduced drivers, so that the technical problem of poor performance of azobenzene in the prior art is solved.

The present invention discloses a high-performance porous alumina ceramic with low-temperature rapid sintering and a preparation method thereof. The raw materials for preparing the alumina ceramic include the following components by mass percentage: 55-65% of nano-alumina powder, 20-30% of low-melting-point multi-component composite salt, 8-12% of polymer pore-forming agent, and 3-5% of intelligent response type self-propagating initiator; the polymer pore-forming agent includes poly-N-isopropylacrylamide, polyacrylic acid, and azobenzene-modified polyvinyl alcohol; the intelligent response type self-propagating initiator is a core-shell structure composite material of PNVCL-coated Al / Ni; the porous alumina ceramic is made by low-temperature sintering using the above-mentioned raw materials. The porous alumina ceramic has a high porosity and a rich pore structure, and has excellent mechanical properties, thermal conductivity, and mass transfer properties, and at the same time has the characteristics of low-temperature rapid sintering.

The invention relates to the technical field of flocculants, and in particular to a composite flocculant containing a cationic etherifying agent and a preparation method thereof. The composite flocculant comprises the following raw materials in parts by weight: 15-20 parts of carboxymethyl guar gum, 12-15 parts of cationic konjac glucomannan, 1.2-1.5 parts of cationic etherifying agent, 1.8-2.2 parts of magnetic polysilicate metal salt flocculant, and 0.2-0.3 parts of preservative. By compounding the flocculant, the flocculated flocs have magnetism and can be recycled and reused. Furthermore, since a photoresponsive azobenzene structure is grafted into the cationic konjac glucomannan, controllable pollutant aggregation and separation are achieved, ensuring that the composite flocculant can maintain good flocculation performance after multiple recycling and reuse.

The invention discloses a preparation method of a high-stability photoresponse covalent organic framework membrane and application of the high-stability photoresponse covalent organic framework membrane in selective separation of multiple components. 4-azido azobenzene is prepared by carrying out azido reaction on 4-aminoazobenzene in an acidic aqueous solution, and then a BPTA-TAPB-COF membrane is used as a matrix to prepare the high-stability photoresponse covalent organic framework membrane. 4-azido azobenzene is efficiently grafted to the pore wall of the BPTA-TAPB-COF membrane through a click chemical reaction, the photoresponse covalent organic framework membrane is constructed, and the covalent organic framework membrane can be used for multi-component selective separation and is suitable for multi-component systems with different sizes. The azobenzene group in the pore channel of the prepared Azo-COF membrane is subjected to reversible cis-trans isomerization under the irradiation of ultraviolet / visible light, the response speed is high, and the cycle performance is good; the Azo-COF membrane has good application in the light-operated nanofiltration process, the performance of the Azo-COF membrane is not reduced after the Azo-COF membrane is continuously recycled for 12 days, and the structure of the Azo-COF membrane is kept stable.

The invention relates to the technical field of organic optical functions, in particular to an azobenzene dual-mode photochromic compound as well as a preparation method and application thereof. The compound has a structure as shown in (I): # imgabs0 #. The azobenzene dual-mode photochromic compound prepared by the invention has extremely fast photoresponse capability, can realize the dual-mode photochromic phenomenon of color and fluorescence, realizes the conversion of color from yellow to colorless and the conversion of fluorescence from non-fluorescence to blue fluorescence under the irradiation of ultraviolet light, and has large optical property change before and after photochromic, so that the photochromic effect is good. The color contrast ratio is high, and high definition of information storage is guaranteed.

A method of stimulating dentin generation includes applying a polymerizable composition to exposed dental pulp in a dentate mammal or a dentate non-mammalian vertebrate; wherein the polymerizable composition comprises a hydroxy-substituted azobenzene group having the structurewherein x, R1, R2, R4, R5, R6, R7, R8, R9, and R10 are defined herein; and polymerizing the polymerizable composition; wherein the amount of the hydroxy-substituted azobenzene group applied to the exposed dental pulp is effective to promote dentin generation.

The invention provides a secondary battery and a preparation method thereof, an energy storage system and electric equipment, and relates to the technical field of energy storage. The method comprises the following steps: assembling a positive plate, a diaphragm and a negative plate, injecting an electrolyte to obtain a secondary battery, and sequentially mixing, coating and drying a first positive active material, nano SiO2, two-dimensional titanium carbide, a first conductive agent, a first binder and a first solvent to form a coating; mixing, coating and drying a second positive electrode active material, a carbon nanotube, a second conductive agent, a second binder and a second solvent in sequence to form a coating; a third positive electrode active material, an azobenzene group modified fluorinated acrylate copolymer, a third conductive agent, a third binder and a third solvent are sequentially mixed, coated, subjected to edge ultraviolet light curing treatment and dried, and the positive electrode plate is obtained. The preparation method is helpful for reducing the edge bulging phenomenon of the positive plate in the coating process, and is helpful for improving the capacity and the cycling stability of the secondary battery.

The invention relates to the technical field of resin-based material modification, and discloses a multistage assembly material based on an azobenzene liquid crystal block copolymer, a preparation method of the multistage assembly material and a resin reinforcing and toughening method. The preparation method of the multistage assembly material based on the azobenzene liquid crystal block copolymer comprises the following steps: carrying out polymerization reaction on an azobenzene methacrylate monomer and a chain transfer agent in a first solvent in an inert atmosphere under the action of an initiator to obtain the liquid crystal block copolymer, and carrying out annealing treatment on the liquid crystal block copolymer in a second solvent to obtain a dispersion liquid of the multi-stage assembly material. The azobenzene liquid crystal block polymer with liquid crystal orderliness is obtained through reaction polymerization of an azobenzene methacrylate monomer and a reversible addition-fragmentation chain transfer polymerization monomer; the block polymer is subjected to thermal annealing treatment in a specific solvent, so that the morphology of the polymer assembly is regulated and controlled, and multi-stage assemblies such as a multi-layer blade, a single-layer blade, a multi-layer square sheet and a single-layer square sheet are formed.

The invention provides a Micro-LED (Light Emitting Diode) laser mass transfer and release material as well as a preparation method and application thereof. The Micro-LED laser mass transfer and release material is prepared from the following components in percentage by mass: 12 to 50 percent of azobenzene modified epoxy resin, 1 to 10 percent of auxiliary material resin, 0.01 to 1 percent of coupling agent, 0.1 to 1.8 percent of flatting agent and 0.01 to 1.5 percent of antioxidant. The specific composition of the Micro-LED laser mass transfer and release material is designed, azobenzene modified epoxy resin is used as matrix resin, the Micro-LED laser mass transfer and release material with excellent performance is prepared, and the Micro-LED laser mass transfer and release material has good high temperature resistance, acid and alkali resistance and high adhesive force, and can be applied to the field of light emitting devices. The bonding agent can be firmly bonded with a chip under the conditions of high temperature and acid and alkali, defect-free bonding is realized, and laser release of the chip can be realized, so that the transfer efficiency of the chip is improved.

The invention belongs to the technical field of pesticides, and particularly relates to azobenzene calix [4] arene derivatives as well as a preparation method and application thereof. The invention discloses a novel azobenzene calix [4] arene derivative prepared by directional modification through an azo reduction reaction based on a calix [4] arene skeleton. The azobenzene calix [4] arene derivative has the characteristics of green environmental protection, accurate and controllable structure and efficient synthesis. After the derivative and a pesticide form a host-guest compound, the activity of the pesticide can be remarkably improved, the bioavailability of the pesticide at an action site is increased, the problem of low efficiency of the traditional pesticide is effectively solved, and the development of target drug resistance is delayed. The technology breaks through the technical bottleneck of nano-carrier environmental toxicity, provides a new thought for developing a multi-target and low-environmental-risk pesticide synergist, and has important significance for realizing pesticide decrement, synergism and resistance treatment.

The wisdom utilization of nuclear energy occupies a core and irreplaceable position in consolidating national defense security and transforming an energy system to greenization. While the nuclear energy technology is vigorously developed, how to properly manage and efficiently recycle depleted uranium (especially 238U, although the depleted uranium does not cause direct radioactive hazards to human bodies) generated in the nuclear energy application process becomes a critical technical challenge faced by the field of environmental protection and sustainable development. Particularly, U3O8 prepared by depleting UF6 is used as a raw material, UO4. 2H2O prepared by a simple dissolution and re-precipitation method is used as a catalyst, and aniline is catalyzed and oxidized to synthesize diphenyl diazene or derivatives thereof. According to the invention, on one hand, a mode of recycling the depleted uranium waste is created, a brand new conversion way is found for the waste which is traditionally considered as a difficult problem, and on the other hand, a bridge from aniline and derivatives thereof to a high value-added chemical, namely diphenyl diazene or derivatives thereof, is skillfully erected. Potential threats of the depleted uranium waste to the environment can be effectively reduced, green transformation and resource utilization of the waste are achieved, meanwhile, the chemical industry can be promoted to proceed towards the more efficient and environment-friendly direction, and economic benefits are remarkably improved for the chemical industry.

The invention provides an anoxic and endogenous formaldehyde dual-response supramolecular fluorescent probe as well as a preparation method and application thereof, and belongs to the technical field of fluorescent probes. The supramolecular fluorescent probe provided by the invention is composed of azobenzene calixarene and a formaldehyde response fluorescent probe included in the azobenzene calixarene. The supramolecular fluorescent probe provided by the invention can simultaneously respond to oxygen deficit and high endogenous formaldehyde microenvironment characteristics and generate a stronger near-infrared fluorescent signal for analysis and detection, so that false positive signal interference is reduced, high-specificity imaging under tumor microenvironment conditions can be realized, and a new mode is provided for precise imaging of tumors. Compared with the existing fluorescent probe, the supramolecular fluorescent probe provided by the invention combines the detection of two important biomarkers in the tumor generation and development processes, and does not need to introduce a large-volume targeting group into the molecule; the preparation method is simple, the structure is novel, the imaging performance is excellent, and the tumor is accurately subjected to near-infrared fluorescence imaging tracing.

The invention discloses a self-repairing anticorrosive coating and a preparation method thereof, and relates to the technical field of coatings. The self-repairing anticorrosive paint disclosed by the invention is prepared from the following raw material components in parts by weight: 1.5 to 2.5 parts by mass of cyclodextrin-based polyurethane, 1.5 to 2.5 parts by mass of azobenzene compound polyurethane, 0.15 to 0.25 part by mass of hollow mesoporous silicon dioxide, 0.15 to 0.25 part by mass of a flatting agent and 7.5 to 12.5 parts by mass of a solvent, wherein the cyclodextrin-based polyurethane is obtained by carrying out a reaction on cyclodextrin and toluene diisocynate; the azobenzene compound polyurethane is obtained by carrying out a compound reaction on 4, 4 '-dihydroxy azobenzene, modified polyaniline and toluene diisocynate; the self-repairing anticorrosive paint prepared by the invention is good in self-repairing effect, good in corrosion resistance, relatively good in adhesive force and relatively good in mechanical property.

The invention relates to the technical field of traffic engineering, in particular to a self-repairing type warm-mixing flame-retardant microcapsule and an asphalt mixture, and the microcapsule comprises a core material and a shell material; the composite material is characterized in that the core material comprises a self-repairing component and a warm mixing functional component, the self-repairing component is at least one of sulfur, epoxy resin or recycled asphalt, the warm mixing functional component is an organic wax-montmorillonite composite component, and montmorillonite is modified by a silane coupling agent; the shell material is at least one of ammonium polyphosphate, melamine formaldehyde resin or nano aluminum hydroxide, and nano silicon dioxide particles of which the surfaces are grafted with azobenzene groups are loaded on the surface of the shell material; through cooperation of multiple components, a light, mild and stress triple triggering mechanism is constructed, core material release is accurately regulated, warm mixing, self-repairing and flame-retardant components are mutually promoted, the repairing efficiency and flame-retardant durability are improved, efficient function coupling is achieved, and the pavement performance is optimized.