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379 results about "Azobenzene" patented technology

Azobenzene is a chemical compound composed of two phenyl rings linked by a N=N double bond. It is the simplest example of an aryl azo compound. The term 'azobenzene' or simply 'azo' is often used to refer to a wide class of similar compounds. These azo compounds are considered as derivatives of diazene (diimide), and are sometimes referred to as 'diazenes'. The diazenes absorb light strongly and are common dyes.

Full-biodegradable bamboo fiber film material and preparation method thereof

PendingCN120272025AFiberPolymer science
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.
Owner:FUJIAN YANGZHU NEW MATERIALS TECHNOLOGY CO LTD

Side chain type photoresponse bisazobenzene polyurethane and preparation method thereof

PendingCN120005138AAlkanePolymer science
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.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY

Composite flocculant containing cationic etherifying agent and preparation method thereof

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.
Owner:DONGYING ZEAO CHEM CO LTD

Three-dimensional azobenzene functionalized covalent organic framework intelligent response material and preparation method thereof

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.
Owner:JILIN UNIVERSITY

Preparation method of photoresponsive self-cleaning optical coating with dynamic self-repairing function

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.
Owner:ZHEJIANG ZHIJIANG INTELLIGENT TRANSPORTATION TECH CO LTD +1

A visible light-responsive dynamically covalently crosslinked self-healing polyurethane and its preparation method

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.
Owner:SOUTHWEST PETROLEUM UNIV

Liquid crystal elastomer compositions and methods of making the same

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.
Owner:THE REGENTS OF THE UNIVERSITY OF COLORADO

Low-temperature-resistant organic silicon elastic damping body and preparation method thereof

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.
Owner:BENGBU AIYOU NEW MATERIALS CO LTD

Azobenzene polymer material and application thereof in nanoimprint lithography

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.
Owner:UNIV OF SCI & TECH OF CHINA

Polarizer for brightening sheet roll material compounding and preparation method of brightening sheet

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.
Owner:SHENZHEN QIANHAI YUZHUO TECH CO LTD

Photo-thermal response T-type liquid crystal molecule, preparation method thereof and application of photo-thermal response T-type liquid crystal molecule to intelligent window

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.
Owner:SOUTH CHINA UNIV OF TECH

High-efficiency low-pollution cow dung returning treatment method

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.
Owner:XINJIANG ACADEMY OF AGRI & RECLAMATION SCI

Multifunctional nano-carrier with drug resistance, biotin receptor targeting and hypoxia / low pH dual responsiveness as well as preparation method and application of multifunctional nano-carrier

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.
Owner:BEIJING UNIV OF TECH

Copolymerized polyurethane material with opto-electro-mechanical effect as well as preparation method and application of copolymerized polyurethane material

InactiveCN119529213AAttenuate or avoid the effects of cytotoxicitygood flexibilityFriction generatorsPolymer scienceIonic liquid
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.
Owner:YUNNAN UNIV

High-performance porous alumina ceramics with low-temperature rapid sintering and its preparation method

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.
Owner:苏州芯合半导体材料有限公司

A composite flocculant containing a cationic etherifying agent and a preparation method thereof

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.
Owner:DONGYING ZEAO CHEM CO LTD

Preparation method of high-stability photoresponse covalent organic framework film and application of high-stability photoresponse covalent organic framework film in selective separation of multiple components

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.
Owner:HENAN NORMAL UNIV

Azobenzene dual-mode photochromic compound as well as preparation method and application thereof

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.
Owner:山西工程科技职业大学

Method of stimulating dentin formation with hydroxy-substituted azobenzene materials

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.
Owner:THE REGENTS OF THE UNIVERSITY OF COLORADO

Secondary battery and preparation method thereof, energy storage system and electric equipment

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.
Owner:ZHEJIANG JINKO ENERGY STORAGE CO LTD

Micro-LED (Light Emitting Diode) laser mass transfer and release material as well as preparation method and application thereof

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.
Owner:SHENZHEN SAMCIEN NEW MATERIALS TECHNOLOGY CO LTD

Azobenzene calix [4] arene derivative as well as preparation method and application thereof

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.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Hypoxia and endogenous formaldehyde dual-response supramolecular fluorescent probe as well as preparation method and application thereof

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.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Self-repairing anticorrosive paint and preparation method thereof

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.
Owner:JIANGSU PROVINCE FENGCAI NEW TYPE BUILDING MATERIALS CO LTD

Self-repairing type warm-mixing flame-retardant microcapsule and asphalt mixture

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.
Owner:JIANGSU SINOROAD ENG TECH RES INST CO LTD

Recyclable self-repairing polyurethane organic silicon resin with excellent photocuring and photoresponse performance and preparation method of recyclable self-repairing polyurethane organic silicon resin

The invention discloses recyclable self-repairing polyurethane organic silicon resin with excellent photocuring and photoresponse performance and a preparation method thereof, and belongs to the technical field of photoresponse materials. The polyurethane organic silicon resin is prepared from the following raw materials: polymeric monomers (a propyl alcohol substituted azobenzene monomer and hydroxyethyl acrylate), diisocyanate, double-end hydroxypropyl silicone oil, bis (2-hydroxyethyl) disulfide, triethanolamine, a catalyst and a polymerization inhibitor. The material prepared by the invention contains a reversible light response azobenzene structure, a dynamic reversible bond disulfide bond and an acrylate structure, and is endowed with excellent light responsiveness, self-repairing performance and recoverability. In addition, the material prepared by the invention also has a siloxane bond structure, and complete upgrading and recycling of the material are realized through rearrangement reaction of silicon-oxygen bonds under the conditions of high temperature and alkali catalysis.
Owner:NANCHANG HANGKONG UNIVERSITY

Universal synthesis and solar water evaporation application of covalent organic framework organic hydrogel

PendingCN119859230AFreeze-dryingSolar water
The invention provides a universal, simple and extensible method for preparing the covalent organic framework gel by utilizing a plurality of group protection strategies. An amino monomer containing a protecting group and an aldehyde group monomer are subjected to aldehyde amine condensation to obtain a COF gel material, so that the non-melting COF can be formed. The prepared material has the characteristics of high crystallinity, high porosity, good mechanical property, good solvent property, good freezing resistance and the like, and the COF organic hydrogel can be very conveniently subjected to structure and function design, can easily load various functional groups, and has great industrial application value. The prepared organic hydrogel can be easily converted into hydrogel, organic gel and aerogel through solvent exchange and freeze drying, and the gap between different types of COF gels is broken through. The water transmission performance and the water transmission state are measured through a solar photo-thermal water evaporation experiment, and the COF hydrogel rich in azobenzene groups has good solar energy absorption, photo-thermal conversion and water transmission performance, is equivalent to the most advanced material and has a great industrial practical application prospect.
Owner:NANKAI UNIV

Liquid crystal elastomer compositions and methods of making the same

Described herein are various embodiments for liquid crystal elastomers (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 described herein have improved thermotropic characteristics, including lower thermotropic activation temperatures. The LCEs described herein may also incorporate azobenzene to thereby also enhance the phototropic properties of the LCE.
Owner:THE REGENTS OF THE UNIVERSITY OF COLORADO

A diazene-based organic negative electrode material for aqueous alkaline batteries and its application

The present invention discloses a diazine-based organic negative electrode material for aqueous alkaline batteries and its application, relating to the field of battery technology. This type of organic negative electrode has an electrochemical redox active center with a nitrogen-nitrogen double bond (N=N), including but not limited to azobenzene; azobenzene modified with at least one of halogen, methyl, and nitro functional groups; benzo[c]cinnoline; and benzo[c]cinnoline modified with at least one of halogen, methyl, and nitro functional groups. The organic negative electrode material provided by the present invention can operate stably under various alkaline conditions and is compatible with nickel hydroxide positive electrodes and air positive electrodes. The material has excellent rate performance and long-term cycle stability, and its wide source makes it suitable for large-scale application.
Owner:NANKAI UNIV

Polyazobenzene-naphthalene tetracarboxylic anhydride material, preparation method and application in secondary battery

The invention discloses a polyazobenzene-naphthalene tetracarboxylic anhydride material, a preparation method and an application of the polyazobenzene-naphthalene tetracarboxylic anhydride material in a secondary battery, and belongs to the field of secondary batteries. The chemical structural formula of the polyazobenzene-naphthalene tetracarboxylic anhydride material is shown in the specification: # imgabs0 # polyazobenzene-naphthalene tetracarboxylic anhydride material has a long-range conjugated skeleton and abundant electroactive sites and electroactive centers, so that the ionic conductivity and capacity of the polyazobenzene-naphthalene tetracarboxylic anhydride material are improved. And the polyazobenzene-naphthalene tetracarboxylic anhydride material also shows a rigid framework, so that the charge-discharge volume expansion of the positive electrode material is inhibited, and the cycle life of the positive electrode material is prolonged.
Owner:CHERY AUTOMOBILE CO LTD