939 results about "Material synthesis" patented technology

The invention belongs to the technical field of perovskite solar cells, and particularly discloses a self-assembly monomolecular film hole transport material based on diphosphoric acid and a preparation method and application thereof.The diphosphoric acid serves as an anchoring group, the chelation between the material and a conductive base can be effectively enhanced, the self-assembly characteristic of the material on the surface of a substrate is improved, and the hole transport efficiency is improved. The compact and smooth self-assembled monomolecular film is formed. Meanwhile, the electron and space effects of alkyl chains or benzene ring connecting units are regulated and controlled, so that the molecular stereo configuration and energy level matching are optimized. The material disclosed by the invention is simple in synthesis steps and low in preparation cost, and industrial synthesis of the material can be realized. When the material is applied to an inverted perovskite solar cell as a hole transport layer, photoelectric conversion efficiency exceeding 24.7% and excellent device stability performance can be obtained, and huge commercial prospects are shown.

The invention relates to a catalyst for ethylene oxide ring-opening polymerization and a preparation method thereof, and belongs to the technical field of high polymer material synthesis, and the catalyst is a composite structure based on a silicon dioxide nanoparticle loaded bimetal organic complex; a modified nitrogen-containing polydentate ligand is prepared by adopting a special method, is coordinated with metal ions through covalent bonds and is loaded on silicon dioxide nanoparticles; by utilizing the high dispersity and stability of the silicon dioxide nanoparticles and the synergistic catalytic effect of the bimetal organic complex, the catalytic effect is effectively improved, the polymerization process is accelerated, the polymerization stability is enhanced, the polymerization molecular weight is improved, and the distribution is narrow.

The invention discloses a method for determining the critical safety diameter of an emulsion drop of a liquid energetic material synthesis reaction conveying pipeline, which comprises the following steps of: curing and heating a sampled emulsion, determining pyrolysis kinetic parameters of the detected emulsion, constructing a heat production and heat transfer heat insulation system model of a mixed solution of an acid ester emulsion and the emulsion drop by utilizing Comsol, and determining the critical safety diameter of the emulsion drop of the liquid energetic material synthesis reaction conveying pipeline. Calculating a temperature rise change rule of the mixed liquid heat insulation system under different emulsion droplet sizes, determining a function relationship between the emulsion droplet particle size and the temperature rise of the mixed liquid heat insulation system, and deriving to obtain the critical safety diameter of the emulsion droplet; the method comprises the following steps: adsorbing emulsified liquid by using a porous particle material, testing whether the emulsified liquid explodes due to collision and friction of emulsified liquid with different pore diameters at different rates in an impact tank-piston device to obtain the relationship among the movement rate of emulsified liquid drops, the particle size of the emulsified liquid drops and the explosion risk, and determining the explosion risk of the emulsified liquid drops under a specific conveying speed condition according to the relationship. The liquid energetic material is used for synthesizing the optimal size of emulsified liquid drops in a reaction mixed solution.

The invention discloses a material synthesis data extraction method and system based on a knowledge enhancement large model, and relates to the related field of artificial intelligence, and the method comprises the steps: retrieving literature data, and constructing a material synthesis knowledge text by executing data denoising and OCR text conversion; performing LoRA fine tuning on the basic large model, introducing a field instruction data set to perform fine tuning learning, and determining an extraction large model; performing semantic partitioning and vectorization on the material synthesis knowledge text, constructing a multi-level retrieval framework, performing retrieval enhancement in combination with a material science knowledge base, and determining an enhanced knowledge text; and constructing a data extraction prompt, combining the enhanced knowledge text with a material to synthesize a knowledge text, inputting the knowledge text into an extraction large model, and executing knowledge extraction processing. The problem that the accuracy of data extraction is insufficient in the prior art is solved, and the effect of improving the accuracy of data extraction is achieved. Meanwhile, manual work can be replaced to complete literature analysis extraction and domain knowledge association, and support is provided for material synthesis process recommendation.

The invention discloses a method for designing a new pollutant perfluorinated compound adsorption material based on a large language model. The method comprises the following steps: firstly, constructing a mixed retrieval enhancement generation framework fusing a structured knowledge graph and vectorized semantic retrieval; then constructing a field knowledge graph and semantic representation big language model oriented to the PFAS adsorption material by utilizing a big language model framework; generating an initial material design framework through a large language model, performing iterative adjustment on a material structure in combination with a machine learning model, and predicting and generating a performance-optimized PFAS adsorption material; and finally, based on knowledge graph reasoning and vector storage information, combining molecular structure information, and recommending an experiment path for PFAS adsorption material synthesis and verification. According to the method, the knowledge graph and the semantic model are constructed to realize automatic extraction and systematization of domain knowledge, an interpretable design rule is generated through data reasoning, an optimization code is automatically generated through combination of LLM and ML, an experiment path is recommended to accelerate material design iteration, the experiment period is shortened, and a reliable screening scheme is provided.

The invention discloses a mechanical arm trajectory planning method and device based on generative adversarial imitation learning, and relates to the technical field of mechanical arms. The method comprises the following steps: acquiring joint state data of the mechanical arm; inputting the mechanical arm joint state data into a trained improved generative adversarial imitation learning model to obtain a mechanical arm action, and circularly executing data acquisition-input of the improved generative adversarial imitation learning model to finally obtain a mechanical arm track; wherein in the improved generative adversarial imitation learning model, the reward function is a dynamic reward function, and parameters in the dynamic reward function are dynamically adjusted according to the task completion degree. According to the technical scheme, the learning efficiency can be improved. Compared with the prior art, the mechanical arm trajectory planning method has the advantages that the stability is obviously improved, expert trajectories can be better simulated, the success rate and accuracy of mechanical arm trajectory planning based on generative adversarial imitation learning are greatly improved, and a solid foundation is laid for practical application of mechanical arms in the fields of material synthesis and the like.

The invention discloses a reaction kettle device for synthesis of an iron phosphate material, and particularly relates to the technical field of synthesis of battery materials, and the device comprises a kettle body, a driving motor, a transmission disc and a turbo-type paddle. A sealing cover is arranged at the top of the kettle body, a driving motor is connected with a rotating shaft, an anchor blade is arranged below the rotating shaft, and the bottom realizes turbine blade lifting and sleeve guide limiting through transmission of a piston cavity and compressed gas; and a ratchet wheel on the outer wall of the rotating shaft is meshed with a pawl in the transmission disc in a one-way mode, and intermittent wall scraping is achieved. According to the device, dead angles are broken through synergistic stirring of the double blades, the mixing uniformity and the reaction rate are improved, materials adhering to the wall are efficiently removed through intermittent wall scraping, the stable reaction environment is guaranteed through multiple sealing, the structure is flexible to adjust, maintenance is convenient and fast, efficient and high-quality synthesis of the iron phosphate material can be achieved, and the device is suitable for industrial large-scale production.

The invention provides a preparation method of a Janus material for simultaneous screening of protein phosphorylation and palmitoylation modification, and belongs to the technical field of magnetic material synthesis. The method comprises the following steps: firstly, preparing MCeO2; the preparation method comprises the following steps: mixing MCeO2, hexadecyl trimethyl ammonium bromide and ammonia water to obtain a mixed solution, adding 1, 2-bis (triethoxysilane) ethane into the mixed solution for reaction to obtain a product, and dispersing the product into an NH4NO3 solution for reflux reaction to obtain Janus MCP; the preparation method comprises the following steps: reacting Janus MCP with a silane coupling agent, dissolving aminated Janus MCP and 4-ethylene sulfonyl benzoic acid in a buffer solution containing EDC and NHS, and reacting to obtain the Janus material. The preparation method is reliable, the material performance is stable, and the enrichment efficiency of the magnetic Janus on target peptide fragments (phosphorylated peptide fragments and palmitoylated peptide fragments) is remarkably improved.

The invention provides a novel nano material as well as an immobilized enzyme and application thereof, and relates to the fields of biotechnology and application, material synthesis and application, water environment treatment and environmental protection. The particle size of the nano material is 2-30 microns, and the aperture of the surface is 2-30 nm; the solid nanomaterial is prepared by the following method: adding an alkali solution into a metal salt solution, fully mixing, then adding a ligand aqueous solution, fully reacting, and then separating to obtain the solid nanomaterial. When the material is used for immobilizing enzyme, the particle size of the obtained immobilized enzyme is 2-20 microns, and the aperture of the surface is 1-15 nm; the preparation method comprises the following steps: mixing an enzyme with a ligand aqueous solution, then adding the mixture into a metal salt mixed solution, and separating a solid product. The nano material has excellent biocompatibility and mild synthesis conditions, can protect the reaction activity of the enzyme under harsh conditions such as high temperature, acid and alkali, and improves the recycling capability and storage capability of the enzyme.

The invention discloses a preparation method of a mesoporous Zn-ZSM-5 molecular sieve for preparing aromatic hydrocarbon from methanol, and belongs to the technical field of synthesis of inorganic materials. Aiming at the problems that a conventional mesoporous Zn / ZSM-5 molecular sieve catalyst Zn blocks orifices, the mesoporous structure is disordered, the molecular sieve solid yield is low, a molecular sieve framework is seriously damaged and the like, the preparation method comprises the following steps: uniformly mixing zinc gluconate with an aluminum source, a silicon source and a template agent, putting the mixture into a closed reaction container, carrying out hydrothermal crystallization, and sequentially washing, drying and roasting to obtain the mesoporous Zn / ZSM-5 molecular sieve catalyst. The sodium type molecular sieve is obtained; the preparation method comprises the following steps: carrying out multiple ion exchange on a sodium type molecular sieve by using an ammonium chloride solution, and sequentially carrying out suction filtration, washing, drying and roasting to obtain the mesoporous Zn-ZSM-5 molecular sieve. According to the preparation method of the methanol-to-aromatic hydrocarbon Zn / ZSM-5 molecular sieve provided by the invention, the obtained molecular sieve is used in the methanol-to-aromatic hydrocarbon process, and has the characteristics of high carbon deposition resistance, high aromatic hydrocarbon selectivity, low Zn wastage rate and the like.

The invention aims to serve the national strategic emerging industry, and discloses a deterministic material synthesis method and a deterministic material synthesis system for pre-nucleation chiral intervention (PNChI for short), which are suitable for one-dimensional or quasi-one-dimensional material systems (such as carbon nanotubes, biomacromolecules and the like) with formalized chiral tags. According to the method, before irreversible closed nucleation of a precursor is completed, deterministic authorization of a target chiral index (n, m) is realized in a controllable time window through at least one engineering intervention mechanism (such as physical field regulation, catalytic interface design, information coding guidance and the like) based on distinguishable physical properties, and consistency is kept in subsequent growth. The system comprises a programmable intervention unit and an intelligent sequence control module, and does not depend on a separation or screening step after nucleation. The single chiral index abundance in the obtained material is greater than or equal to 95%, preferably greater than or equal to 98%. The statistical limitation of traditional chiral control is broken through, a general synthesis normal form from'instruction input 'to'structure output' is constructed, and the method is suitable for high-consistency application scenes such as semiconductors, quantum devices, catalysts and biological recognition.

The invention discloses a full bio-based copolymer based on a citric acid bicyclic monomer, a preparation method and an application, and belongs to the technical field of material synthesis, citric acid-derived bicyclic OPD diol and OPBMC diester are synthesized through oxidation reduction and transesterification, and then 1, 4-butanediol is partially replaced with OPD or 2, 4-butanediol is partially replaced with OPBMC through melt phase polycondensation reaction. Two series of random copolyester PBxOyF copolymer and PBOmFn copolymer of the PBF are prepared by adding 2, 5-dimethyl furandicarboxylate into the PBF, and then adding the PBxOyF copolymer and the PBOmFn copolymer into the PBF. According to the full-bio-based copolymer based on the citric acid bicyclic monomer, the preparation method and the application, the citric acid bicyclic monomer obviously improves the glass transition temperature and shows good mechanical properties; therefore, the bicyclic monomer based on citric acid has huge potential in the aspect of synthesizing novel bio-based copolyester with expected thermodynamic properties, and is expected to further expand the application range of the 2.5 furandicarboxylic acid-based polyester.

The invention relates to the field of high polymer material synthesis, and discloses an ultrasonic-enhanced water-soluble nano polymer synthesis method, which comprises the following steps: synergistically regulating monomer dispersion and free radical activation processes by adopting low-frequency and high-frequency ultrasonic alternating action; the ultrasonic power and the action time sequence are dynamically adjusted based on the real-time temperature and PDI data, and molecular chain thermal fracture is inhibited; reaction parameters are globally optimized in combination with a genetic algorithm, so that the yield and the quality are synchronously improved; a functional monomer containing a sulfonic group and an amide group is selected, and an ultrasonic cavitation effect is utilized to directly realize in-situ embedding of a functional group into a polymer main chain. The technical bottlenecks that traditional single-frequency ultrasonic energy distribution is uneven and a post-modification process is complex are broken through, and the obtained nano polymer has the characteristics of high water solubility, narrow particle size distribution and customizable functionalization and is suitable for the fields of medical carriers, environment-friendly film materials and the like.

The utility model relates to the technical field of battery material synthesis devices, in particular to a continuous calcining device for producing lithium iron phosphate. According to the technical scheme, the device comprises a low-temperature furnace feeding bin, a low-temperature calcining furnace, a buffer stock bin, a high-temperature calcining rotary furnace and a multi-stage material cooling device which are communicated through pipelines; the low-temperature calcining furnace, the high-temperature calcining furnace and the multi-stage material cooling device are respectively provided with a material inlet and a material outlet, the material outlet of the low-temperature calcining furnace is connected with the material inlet of the low-temperature calcining furnace, and the material outlet of the low-temperature calcining furnace is connected with the material inlet of the high-temperature calcining rotary furnace through a pipeline; the pipeline is sequentially provided with a buffer bin and a material conveyor in series, and a material outlet of the high-temperature calcining rotary furnace is connected with a material inlet of the multi-stage material cooling device. The multi-stage fishbone-shaped material shoveling plates are arranged in the low-temperature calcining furnace, and the spiral shoveling plates are arranged in the high-temperature calcining furnace, so that the mixing uniformity of sintered materials in the low-temperature calcining furnace is improved, and the phenomenon of back mixing of the materials can be effectively avoided.

The invention relates to a carbon dioxide electrocatalytic reduction catalyst, in particular to an L-cysteine modified nano-silver electrocatalyst and application thereof, and belongs to the technical field of carbon dioxide emission reduction and resource utilization and electrocatalytic material synthesis. A preparation method of the L-cysteine modified nano-silver electrocatalyst comprises the following steps: S1, dissolving silver nitrate in water to obtain a 0.05-100mM silver nitrate solution, adding the silver nitrate solution into ethylene glycol, and uniformly stirring; the volume ratio of the silver nitrate solution to the ethylene glycol is 1: (2-20); s2, L-cysteine is added into the mixed solution, microwave heating is performed after uniform stirring, obtained solids are centrifugally washed at least three times with ethyl alcohol and ultrapure water respectively, and the solids are dried in a vacuum drying box to obtain nano-silver particles; the molar ratio of the silver element to the L-cysteine is 1: (0.01-10). By improving the adsorption capacity of the electrocatalyst on active substances, high selectivity and high stability of the product CO in a CO2 in-situ conversion system are realized.

The invention discloses a preparation method of diiodosilane, and belongs to the technical field of material synthesis. The preparation method of diiodosilane comprises the following steps: adding a first iodine source and a second iodine source into a closed reactor in an inert gas atmosphere, and dissolving the first iodine source and the second iodine source in a solvent to form a uniform solution; and reducing the temperature, and adding liquid dichlorosilane. Raising the temperature to 30 to 80 DEG C and reacting; and after the reaction is finished, heating at reduced pressure, rectifying and purifying to obtain the high-purity electronic-grade diiodosilane. The first iodine source is lithium iodide, the second iodine source is at least one of sodium iodide or potassium iodide, and the solvent comprises at least one of acetonitrile, acetone, diethyl ether or ethanol. Lithium iodide and sodium iodide or potassium iodide are compounded, a specific solvent is matched, and a one-step method is used for testing, so that the input cost of raw materials is reduced, the experimental steps are simplified, the reaction rate of a reaction system can be improved, and the purity of a diiodosilane product is improved.

The invention provides a red titanium dioxide out-phase junction as well as a preparation method and application thereof, and belongs to the technical field of material synthesis and renewable clean energy utilization. The preparation method of the red titanium dioxide out-phase junction comprises the following steps: forming a first precursor of B-doped titanium dioxide; calcining the first precursor at a high temperature to obtain a B-doped titanium dioxide out-phase junction second precursor; and mixing any one of (NH4) 2TiF6, NH4TiOF3 and (NH4) 2TiOF4 with the second precursor, and carrying out nitrogen treatment in an ammonia gas flow to obtain the rutile phase and anatase phase uniformly doped red titanium dioxide out-phase junction. According to the invention, titanium dioxide in a rutile phase can be nitrided through ammonium fluotitanate treatment, so that a red titanium dioxide out-phase junction uniformly doped with two phases of rutile and anatase is formed, and the red titanium dioxide out-phase junction shows relatively high water oxidation activity in a photocatalytic water decomposition reaction.

The invention discloses a method and a system for assisting material synthesis by utilizing a multi-mode large model and a storage medium, and the method comprises the following steps: establishing a corresponding relation between embedding of raw materials and a processing process and embedding of material performance by constructing a raw material and processing-performance multi-mode large model; in the application stage, the method can realize three reasoning functions: reasoning the material performance according to the raw materials and the processing process, reversely deducing the required material formula according to the target performance, and judging the credibility of the given formula. According to the method and system provided by the invention, the development efficiency of the material formula is remarkably improved, and meanwhile, the reliability of the formula is ensured. The method is suitable for formula development of various materials such as rubber, plastic and paint, and has important practical value.

The invention discloses a novel lightening material synthesis process for oil well cement, and belongs to the technical field of oilfield chemistry. According to the novel lightweight material synthesis process for oil well cement, diatomite is pretreated and aminated to obtain modified diatomite, and then floating beads are subjected to surface modification and SiO2 aerogel wrapping to obtain modified floating beads; the preparation method comprises the following steps: mixing modified diatomite with modified floating beads to obtain a composite light material, finally, respectively dissolving methyl alkenyl polyoxyethylene ether, lauryl sodium sulfate, hydroxypropyl methyl cellulose and nano silicon dioxide in deionized water to prepare a premixed solution, adding the premixed solution into the composite light material, and stirring to uniformly disperse the premixed solution to obtain the composite light material. The novel lightening material for the oil well cement is obtained. When the density of the novel lightening material for the oil well cement is 1.4 g / cm < 3 >, the novel lightening material for the oil well cement still keeps relatively high compressive strength.

The invention belongs to the technical field of solid waste recycling and porous carbon material synthesis, and particularly relates to abandoned wind turbine blade-based porous carbon as well as a preparation method and application thereof. The method comprises the following steps: carbonizing waste wind turbine blade powder in first protective gas, etching, mixing the obtained primary porous carbon material with an activator, and carrying out pyrolysis activation in second protective gas to obtain the waste wind turbine blade-based porous carbon. According to the method, the waste wind turbine blade is converted into the graded porous carbon material with micropores, mesopores and macropores, the diffusion performance of gas in the pore channels is greatly improved through the synergistic effect of the graded porous structure, the performance advantages of high capacity, fast mass transfer and high adaptability are shown, a way is provided for high-value recycling of the waste blade, and the method is suitable for industrial production. And a low-cost material is provided for the fields of energy storage and conversion, environmental governance, catalysis, adsorption and separation and the like, and the material has remarkable economic and environmental benefits and a wide commercial prospect.

The invention discloses a preparation method and application of an artificially synthesized carbon-based functional biofilm repair material, and relates to the technical field of material synthesis and modification. The method comprises the following steps: inoculating a synthetic functional flora into an inorganic salt culture medium according to the inoculum size of 1.9-2.1% in volume fraction, culturing, centrifuging, collecting thalli, and adjusting OD600 to 0.09-0.11 by using the inorganic salt culture medium under a sterile condition to obtain a compound bacterial solution; mixing the composite bacteria solution, the biological membrane culture solution and the carbon-based material, then carrying out shake culture at 29-31 DEG C, then replacing nutrients, continuing shake culture at 29-31 DEG C, removing an upper-layer turbid liquid, and cleaning with a PBS (Phosphate Buffer Solution) to obtain the artificially synthesized carbon-based functional biological membrane repair material. The invention can obtain the preparation method and the application of the artificially synthesized carbon-based functional biological membrane repair material.

The embodiment of the invention relates to the technical field of polyamide material synthesis, and particularly discloses a dispersive micron-sized strip-shaped polyamide material as well as a preparation method and application thereof, and the dispersive micron-sized strip-shaped polyamide material comprises the following raw materials: polyamide plastic, a poor solvent and a proper amount of NaOH aqueous solution. According to the embodiment of the invention, by reasonably using the raw materials and adopting a reasonable preparation process, the shape and size of the polyamide material can be accurately controlled, and the polyamide material with specific shape and size distribution is obtained; the problem that polyamide particles with specific forms and size distribution are difficult to obtain in an existing polyamide production process is solved. Moreover, the preparation method provided by the embodiment of the invention is simple, effectively expands the development space of the polyamide material in some high-performance application fields, and has a wide market prospect.

The invention provides an MOFs synthesis automation simulation method and system based on a large language model, and belongs to the field of artificial intelligence and nanometer material synthesis. The method comprises the following steps: preparing MOFs samples under different synthesis conditions, carrying out structural characterization and performance testing, and generating and storing a synthesis condition-structure-performance data set; a user puts forward a sample synthesis requirement, an LLM generation general task is divided into data field analysis, data correlation analysis, feature engineering processing, machine learning model construction, machine learning model optimization, machine learning model prediction and analysis subtasks, and subtask planning is generated and fed back; after the user confirms, the LLM reads a related MOFs sample data set according to the disassembled subtasks; and according to the subtask planning, calling a code interpreter tool, performing programming and execution of the subtasks, integrating results of all the subtasks, generating a report and outputting an MOFs sample synthesis scheme. According to the invention, the research and development period of MOFs is shortened, and the cost is reduced.

The invention discloses a simple preparation method of a barium-based metal organic framework (Ba-H2Sip) and proton conduction application of the barium-based metal organic framework (Ba-H2Sip), belongs to the field of functional material synthesis and energy application, and is characterized in that functional differentiation design of a 5-sulfoisophthalic acid ligand: a sulfonic group forms a two-dimensional layered structure by chelating Ba < 2 + >; the carboxyl groups are differentiated into'anchoring carboxyl groups' for constructing a three-dimensional supramolecular skeleton and'proton supply carboxyl groups' for providing a proton source, and the design is reported for the first time in Ba-based MOFs; according to the present invention, the large-scale preparation can be achieved by stirring the low-cost raw material in 1 mol / L hydrochloric acid at the room temperature, the yield exceeds 70%, the product can resist 8 M acid and pH = 13 alkali liquid, the conductivity at 90 DEG C / 90% humidity can achieve 1.39 * 10 <-2 > Scm <-1 >, the high-temperature process is not required, the raw material is low in cost and easy to obtain, and the feasible scheme is provided for the high-efficiency proton conductor industrialization.

The invention relates to the field of catalyst material synthesis, and discloses a metal packaged micro-mesoporous hierarchical pore molecular sieve catalyst, a preparation method and application thereof, and a method for synthesizing 1, 3-propylene glycol, the catalyst comprises a molecular sieve seed crystal inner core, an interlayer containing active components, and a molecular sieve shell; wherein the interlayer containing the active component comprises W oxide and Pt nano particles. The catalyst has a stable metal encapsulated micro-mesoporous hierarchical pore structure, has relatively high hydrothermal stability, can maintain the catalytic activity of active components under long-period operation, and is suitable for industrial application.

The embodiment of the application relates to an oxygen reduction catalyst for constructing a local alkaline-like microenvironment and a preparation method and application thereof, and belongs to the technical field of material synthesis. The preparation method of the oxygen reduction catalyst for constructing a local alkaline-like microenvironment comprises the following steps: (1) loading Fe on a core MOF material to obtain a core Fe / MOF material, and then constructing metal atoms M with water activation capacity in-situ on a shell MOF material by an epitaxial growth method to obtain a core-shell Fe / MOF@M / MOF precursor material, and Fe and M are limited in the core and the shell respectively; (2) performing in-situ carbon conversion on the Fe / MOF@M / MOF precursor material by pyrolysis to obtain a FeNC@MNC oxygen reduction catalyst for constructing a local alkaline-like microenvironment in natural seawater. The catalyst with water activation capacity provided in the embodiment overcomes the challenges of low ion conductivity and chloride adsorption in natural seawater, enhances the stability and activity of the catalyst in seawater, and realizes efficient and stable oxygen reduction.

The present invention relates to a bimetallic layered hydroxide / phytic acid synergistic flame-retardant nylon 6 composite material and its preparation method and application, belonging to the technical field of flame retardant material synthesis. The composite material is prepared from nylon 6, bimetallic layered hydroxide and phytic acid. Wherein, the phosphate functional group in the phytic acid can chelate with the metal ion in the bimetallic layered hydroxide, thereby forming a novel flame retardant. When combustion occurs, the layered structure and thermal decomposition products such as metal oxides, metal phosphates, and carbon-containing aromatic network structure substances in the flame retardant help to suppress the release of smoke and toxic gases, and the release of metal ions and phosphorus-containing free radicals helps to suppress the spread of fire. Compared with pure nylon 6, the peak heat release rate and total heat release rate of the composite material are greatly reduced, the limiting oxygen index is greatly increased, and the vertical combustion test reaches V-0 level. At the same time, the raw material sources in the preparation method of the composite material are abundant, the operation is simple, and it is suitable for scaled-up production.

The invention discloses a preparation method of a cobalt-based nano-foam hybrid catalyst and application of the cobalt-based nano-foam hybrid catalyst in electrocatalytic synthesis of urea, and the preparation method comprises the following steps: dissolving glucose, urea, cobalt nitrate and other metal salts in deionized water, and stirring to form a uniform solution; heating the solution to form porous foam; and putting the porous foam into a tubular furnace, heating in an air atmosphere, cooling to room temperature, and carrying out heat treatment in argon-hydrogen mixed gas to form the cobalt-based nano-foam hybrid catalyst. According to the preparation method of the cobalt-based nano-foam hybrid catalyst, the material synthesis method is simple and convenient, CoCr < 1% > has the optimal Faraday efficiency and yield under-0.3 V (RHE), 23% of urea Faraday efficiency and 60 mmoL g <-1 > cat h <-1 > urea yield are achieved under the condition that CO2 is saturated in 0.2 M KHCO3 and 20 mM KNO2 electrolyte, the current density reaches 16 mA cm <-2 >, and compared with the same type of catalysts, the cobalt-based nano-foam hybrid catalyst has the advantages that the cobalt-based nano-foam hybrid catalyst has the advantages that the cobalt-based nano-foam hybrid catalyst is low in cost and good in performance. The device has the advantages of potential correction and lower energy consumption.

This invention provides a method and application for the comprehensive utilization of chlor-alkali salt mud solid waste to prepare a composite de-icing agent, belonging to the field of comprehensive utilization of solid waste resources and composite material synthesis technology. The invention first prepares a slurry by mixing chlor-alkali salt mud with water. Then, under the action of an acidification aid and an ionic liquid, organic and inorganic acids are added in a single step, followed by precipitation of the composite de-icing agent in an alcohol precipitation solution. The method of this invention achieves a salt mud utilization rate of 86.55-88.85% and an effective component extraction rate of 96.70-99.27%, especially for Ca... 2+ Na + K + Mg 2+ Al 3+ The extraction rates reached 95-99.99%, 99.9%, 99.9%, 85.5-95.0%, and 80.5-90.0%, respectively, and also improved the extraction efficiency of Ca in the solution. 2+ Na + K + Mg 2+ Al 3+ The precipitation rates reached 95.5-99.5%, 75.5-80.5%, 72.5-75.5%, 95.5-99.5%, and 71.5-75.5%, respectively, and the product yield reached 90.80-95.08%. It has broad prospects for snow melting and ice removal in low-temperature environments of -15℃ to -20℃.

The invention relates to the technical field of organic photoelectric materials, and particularly discloses a non-condensed ring small molecule acceptor material based on a quinonoid structure as well as a preparation method and application of the non-condensed ring small molecule acceptor material. According to the invention, easily available 1, 4-diacetyl piperazine-2, 5-diketone is used as a center, an alkyl chain and Ar are used for modification, EG is used as an end group, the non-condensed ring A-D-A '-D-A type structure acceptor material based on a quinone structure is constructed, and the general formula is shown in the specification. Wherein the PCE of the acceptor material which is modified by bithiophene and takes 2-(3-ethyl-4-oxothiazolidine-2-subunit) malononitrile as a terminal group reaches 15%. The non-condensed ring small molecule acceptor material based on the quinonoid structure is simple in synthesis process, and an effective strategy is provided for solving the problem of the overall performance of an organic solar cell.