434 results about "Prepared Material" patented technology

The invention discloses a preparation method of a high-compaction-density lithium iron phosphate material, through grading of large and small particle lithium iron phosphate, optimization of a sintering process and reasonable selection of a carbon source and a titanium dopant, the compaction density and the electrochemical performance of the material are remarkably improved, and the preparation method specifically comprises the following steps: mixing iron phosphate, lithium carbonate, the carbon source and auxiliary materials; the preparation method comprises the following steps: carrying out coarse grinding and fine grinding, respectively preparing large-particle lithium iron phosphate and small-particle lithium iron phosphate (a material A and a material B) by adopting spray drying and high-temperature calcination processes, mixing the material A and the material B according to a ratio, adding auxiliary materials, grinding, further carrying out spray drying, calcining and crushing to obtain a final lithium iron phosphate product, and the maximum compaction density of the prepared material can reach 2.712 g / cm < 3 >. According to the present invention, the maximum 1C discharge specific capacity can achieve 140.5 mAh / g, the maximum 1C 3.2 V discharge platform retention rate is 91.4%, and the prepared lithium ion battery negative electrode material has characteristics of excellent conductivity, high discharge capacity and good cycle stability, and is suitable for power batteries and energy storage batteries.

The invention relates to the technical field of thermal management material preparation, solves the technical problems of loose heat conduction network structure and non-uniform heat conduction direction of a flexible composite phase change material, and particularly relates to a magnetic polymer-based flexible composite phase change material and a preparation method thereof. Comprising the following steps: preparing a modified polydimethylsiloxane prepolymer from a carbon nanotube dispersion liquid and a polydimethylsiloxane prepolymer; adopting a Pickering emulsion method to mix 42 # paraffin, the modified polydimethylsiloxane prepolymer and nano cellulose to prepare a composite phase change material emulsion; silver mirror reaction is adopted to carry out surface silver plating on the magnetic neodymium iron boron particles; the magnetic polymer-based flexible composite phase change material is prepared from the composite phase change material emulsion and the surface-silvered magnetic neodymium iron boron particles. The high flexibility and magnetism of the prepared material in a normal temperature state endow the material with a more convenient installation mode and lower contact thermal resistance, the heat conduction network structure and component compatibility of the material are improved, and the application requirements of a phase change thermal management technology can be met.

The invention relates to the technical field of refrigeration material preparation, in particular to an efficient passive radiation refrigeration material suitable for a sub-super environment and a preparation method and application of the efficient passive radiation refrigeration material. The method comprises the following steps: uniformly mixing thermoplastic polyurethane, sunlight high-reflection inorganic particles and a phase change material in a solvent; after a chemical foaming agent is added, the obtained suspension liquid is heated and foamed in a confinement mold, and wet gel is formed; and finally, carrying out freeze drying treatment to obtain the composite porous aerogel. The prepared material has a micro-nano porous skeleton formed by TPU, and inorganic particles and PCM are uniformly dispersed in the skeleton wall. Through component cooperation and a special porous structure, the material has extremely high sunlight reflectivity and mid-infrared emissivity, self-adaptive temperature regulation and control are achieved through PCM phase change, the problem that refrigeration of a traditional material fails in the sub-environment such as the vertical surface is effectively solved, and efficient sub-super-environment heat management is achieved.

The invention is suitable for the technical field of solid hydrogen storage, and provides a preparation method and application of a PCN-doped MOF derived nano-porous hydrogen storage composite material. The preparation method comprises the following steps: firstly, synthesizing a cobalt-nickel bimetallic MOF material, and introducing melamine polyphosphate and pentaerythritol ester in the synthesis process; introducing metal vanadium ions to obtain an MOF derivative, and calcining the MOF derivative to obtain the PCN-doped MOF derivative nano-porous hydrogen storage material. And compounding with magnesium hydride to obtain the V-Ni-Co / PCN + MgH2 hydrogen storage composite material. The hydrogen storage capacity of the prepared material reaches 7.0 wt% or above, rapid hydrogen absorption can be started at 40 DEG C, the dehydrogenation starting temperature is reduced to about 150 DEG C, rapid hydrogen absorption / hydrogen desorption is completed within 30 min and 45 min respectively, and excellent hydrogen storage thermal / dynamic performance is shown; after 100 times of hydrogen absorption and desorption cycles, the hydrogen storage capacity retention rate of the material is as high as 97%, and the material shows excellent cycle stability.

The invention discloses a UiO-66-(COOH) 2-Glu composite material for efficient recovery of lithium ions and application of the UiO-66-(COOH) 2-Glu composite material. A preparation method of the UiO-66-(COOH) 2 composite material comprises four steps of preparation of UiO-66-(COOH) 2, drying treatment, amino acid modification and separation and purification. The preparation process comprises the following steps: preparing a precursor UiO-66-(COOH) 2-Glu in an aqueous solution system under mild conditions, carrying out functional modification by introducing glutamic acid, and introducing amino groups and carboxyl groups in amino acid to enhance the selective adsorption performance of the UiO-66-(COOH) 2-Glu composite material on lithium ions, thereby obtaining the UiO-66-(COOH) 2-Glu composite material. The preparation process is green, environment-friendly and low in cost, traditional high-temperature and high-pressure conditions are avoided, the practicability of the material is remarkably improved, and the prepared material shows excellent lithium ion selective adsorption performance and shows excellent performance in the field of rapid recovery of lithium ions.

The invention discloses a polyurethane foaming material with a gradient density skin-core structure and a preparation method thereof, and the preparation method comprises the following steps: step 1, injecting a mixed polyurethane foaming raw material into a preheated foaming mold, and closing the mold; step 2, synchronously starting a mold rapid cooling system and an air pressure balance system for foaming and curing when the reaction raw materials are injected; and step 3, taking out the product after curing, standing at room temperature, and curing to obtain the polyurethane foam material. The surface temperature of the mold is suddenly reduced through quenching temperature control so as to form a compact skin layer, and an in-mold pressure curve is controlled by using an air pressure balance program so as to accurately regulate and control foaming of a core layer. The prepared material has a continuous gradient density structure, the skin layer density is high, the core layer density is low, a transition interface with strong binding force is arranged between the skin layer and the core layer, and the extreme performance combination of'hard outside and soft inside 'is successfully realized.

The utility model relates to the technical field of automatic feeding of bowl-shaped plugs, and discloses an accompanying feeding device of a bowl-shaped plug pressing machine, which comprises a movable feeding mechanism and a fixed material preparation mechanism, the accompanying feeding device of the bowl-shaped plug pressing machine is automatically designed, materials are prepared through the fixed material preparation mechanism, then the prepared materials are added into the movable feeding mechanism, and the movable feeding mechanism and the fixed material preparation mechanism are fixed. In the process that the movable feeding mechanism moves to place a batch of bowl-shaped plugs at designated positions and then press-fitting is conducted through a press, the fixed material preparation mechanism can prepare to add the next batch of bowl-shaped plugs at the same time, continuous operation is achieved, the working efficiency is improved, and the labor cost is reduced.

The invention provides a multifunctional loading system and a control method thereof. The multifunctional loading system comprises a prepared material conveying line; the supporting mechanism is driven by the transverse movement driving mechanism to transversely move; the conveying mechanism is installed on the supporting mechanism, an installation area is formed between the conveying mechanism and the supporting mechanism, the conveying mechanism comprises a plurality of feeding pieces which are driven by a feeding driving mechanism to feed materials towards the corresponding material preparation conveying lines, and containing areas are arranged among the feeding pieces; the steering mechanism comprises a steering frame located in the containing area and lower than the tops of the multiple feeding pieces, a rotation driving mechanism located in the mounting area and used for driving the steering frame to rotate, and a lifting driving mechanism located in the mounting area and used for driving the steering frame to ascend and descend. Through the bogie, goods input to a plurality of feeding pieces can be jacked and steered, the transverse movement driving mechanism is matched to drive the supporting frame to transversely move and position, the function that the conveying mechanism can input the goods into a material preparation conveying line one by one according to different layout modes is achieved, and the adaptability of the loading system is improved.

The invention relates to the technical field of adsorption functional materials, in particular to a plant fiber substrate-based instantaneous absorption type damp-proof drying sheet and a preparation method thereof, and the preparation method comprises the following steps: S1, selecting a plant fiber paper base meeting preset flatness and moisture content requirements; s2, the prepared materials are sequentially dispersed in pure water, then a silane coupling agent is added, and the uniform composite adsorption liquid is formed. S3, completely immersing the plant fiber paper base selected in the step S1 into the composite adsorption liquid; s4, the impregnated paper base is firstly subjected to rapid freezing treatment and then transferred into a controlled vacuum environment to be slowly heated; s5, drying the paper base in a constant hot air environment; and S6, the paper base is cut according to the design specification, and a dried sheet finished product is obtained. According to the plant fiber paper-based drying sheet disclosed by the invention, a multi-component composite moisture absorption system is combined with freezing-vacuum lock hole treatment, so that the synergistic improvement of the structural stability and the moisture absorption performance of the plant fiber paper-based drying sheet is realized.

The invention provides a preparation method of a nano super-hydrophobic material. The preparation method comprises the following steps: firstly, selecting nano silicon dioxide particles with the particle size of 20-50 nanometers, and matching the nano silicon dioxide particles with heptadecafluorodecyl trimethoxysilane and other raw materials; the nano silicon dioxide particles are subjected to surface modification for 3-5 hours at 40-60 DEG C by controlling the volume ratio of absolute ethyl alcohol to deionized water to be (3-5): 1 and the mass ratio of the long-chain alkyl silane coupling agent to the nano silicon dioxide particles to be (0.5-1.5): 1. Adding 0.1-0.5% hydrochloric acid or sulfuric acid for catalysis, and stirring at room temperature for 2-4 hours to form a sol-gel system; ultrasonically cleaning the substrate, activating with a sodium hydroxide solution, coating by a spraying, dip-coating or spin-coating method, and drying and curing at 60-80 DEG C for 2-3 hours to obtain a finished product. The water contact angle of the prepared material is not lower than 150 degrees, the rolling angle is not higher than 5 degrees, the performance is stable in the environment with the temperature ranging from-20 DEG C to 80 DEG C and the humidity ranging from 20% to 90%, and the water contact angle is still not lower than 140 degrees after more than 500 times of abrasive paper friction tests.

According to the preparation method and the application of the high-nickel positive electrode material with the core-shell structure, the deep charge-discharge specific capacity and the cycling stability of the layered positive electrode material are remarkably improved by controlling the calcination condition of the high-nickel positive electrode material in an oxygen-free environment, regulating and controlling the oxygen vacancy on the surface of the material and synthesizing the sample with the core-shell structure. Meanwhile, the method is simple, effective and low in cost, and the prepared material is good in morphology uniformity and suitable for large-scale production.

The invention discloses a covalent organic framework with oxidation-reduction activity and a bionic nano-channel structure as well as a preparation method and application of the covalent organic framework, and belongs to the technical field of environmental protection. According to the preparation method, 2, 4-dihydroxybenzene-1, 3, 5-tricarboxaldehyde and 2, 5-bis (allyloxy) terephthaloyl hydrazine are taken as raw materials, a two-dimensional covalent organic framework with oxidation-reduction activity is synthesized, and then a sulfonic acid group with negative charges is covalently grafted, so that a functional material with a bionic nano-channel structure is formed. The material has regular porous channels and rich functional sites, the porous channels provide efficient mass transfer paths and adsorption spaces for uranyl ions, and the functional sites realize specific recognition of the uranyl ions through oxidation-reduction reaction and electrostatic interaction, so that the material shows synergistic advantages of strong selectivity, high adsorption capacity and rapid adsorption kinetics on uranium. The method is simple and low in cost, and the prepared material is clear in structure, good in hydrophilicity, capable of efficiently adsorbing uranyl ions and good in application prospect.

The present invention discloses a transparent super-hydrophobic cultural relic protection material and a preparation method thereof. The method first grafts a hydrolyzed silane coupling agent onto the surface of silica, and then utilizes the amino group of the hydrolyzed silane coupling agent to react with the carboxyl group of a chain fatty acid to graft a chain alkyl group onto the surface of silica particles. The prepared material has excellent super-hydrophobicity, a large contact angle of water droplets on the coating surface, and a small rolling angle, making it difficult for water droplets to stay on the coating surface, thereby effectively preventing moisture penetration. At the same time, due to the transparency of the silica particles and the chain fatty acid, the coating can maintain a high transparency and will not block or change the original color and pattern of the cultural relic. The silane coupling agent acts as a bridge connecting the silica particles and the chain fatty acid, which can enhance the chemical bonding inside the coating, making the coating less prone to aging and cracking, and giving the material good high-temperature resistance and the advantage of resisting ultraviolet light, thereby extending the preservation life of the cultural relic.

The invention discloses a double-station efficient numerical control processing machine which comprises a material storage bin, two material trays are arranged on the material storage bin, when one material tray is used for processing, the other material tray can synchronously carry out manual material preparation, and when the processed material tray is used up, a system is automatically and seamlessly switched to the material tray with prepared materials for continuous processing. The shutdown waiting time of a production line caused by manual feeding in a traditional mode is thoroughly eliminated, and the overall production efficiency is remarkably improved; meanwhile, a portal frame is arranged above the storage bin, a second moving unit is installed on the portal frame, and the two ends of the second moving unit are connected with mechanical arms. The traditional clamping jaw exchange mode depending on a rotating air cylinder is abandoned, a high-response and high-precision servo motor is adopted to drive a servo rotary table, the rotating angle of a clamping jaw air cylinder is precisely controlled, and the clamping jaw exchange efficiency is improved; high repeated positioning accuracy of the clamping jaw position and accurate positioning of any angle are achieved, it is guaranteed that the clamping jaw can rapidly and accurately reach the preset grabbing position every time, and the grabbing success rate and positioning consistency are greatly improved.

The invention discloses a preparation method of high-toughness physical hydrogel, and belongs to the technical field of hydrogel preparation. The preparation method comprises the following steps: preparing polyvinyl alcohol into a polymer solution, mixing tannic acid and iron ions to prepare a complex solution, blending the two solutions to prepare a flocculation hydrogel of a tannic acid-iron ion complex and polyvinyl alcohol, centrifugally collecting the flocculation hydrogel, pressing the flocculation hydrogel into a sheet material, and drying the sheet material to obtain the tannic acid-iron ion / polyvinyl alcohol composite material. The hydrogel is soaked in a poor solvent for dehydration for mechanical property regulation and control, and then the hydrogel and deionized water are subjected to solvent exchange to obtain the high-strength and high-toughness physical hydrogel. The novel hydrogel material with high strength and high toughness is prepared from cheap and easily available commercial raw materials through a simple blending and efficient mechanical property reinforcing and toughening strategy, and the prepared material realizes unification of strength and toughness, and has important application prospects in multiple fields such as biomimetic materials, flexible electronics and energy.

The invention discloses a layered structure solid oxide fuel cell composite cathode catalyst as well as a preparation method and application thereof, and belongs to the field of solid oxide fuel cells. The invention aims to solve the problem that the electro-catalytic performance and low-oxygen reduction reaction activation energy of the existing medium-temperature solid oxide fuel cell are poor. The Sr2. 9Ca0. 1Fe2O7-CuO composite cathode catalyst is prepared by adopting a sol-gel method and a solid phase method, the components in a sol-gel system are in a nanometer range, the reaction is easier to carry out, the reaction temperature is low, the prepared materials are uniformly mixed, and the sol-gel method is carried out in a solution, so that even if the content of doped elements is very low, the doping can be easily realized; the material is prepared by adopting a solid phase method, and the method has the advantages of convenience in operation, simple synthesis process, uniform particle size, no agglomeration of powder particles, good filling property, low cost, high yield and the like, so that the electrochemical performance of the cathode catalyst is improved, and the method is convenient to operate and suitable for industrial production.

The invention relates to the technical field of wave-absorbing materials, in particular to a broadband wave-absorbing material and a preparation method and application thereof. According to the preparation technology of the wave-absorbing material, a non-woven fabric carrier with graded pores and continuous gradient distribution is constructed by virtue of induction of a centrifugal force field, and then the non-woven fabric carrier is placed in a magnetic dispersion liquid system to be subjected to impregnation ultrasonic dispersion load treatment, so that heterogeneous interface structures are constructed on the surfaces and the interiors of fibers, and the prepared material fabric has the characteristics of light weight and broadband wave-absorbing performance; the method is suitable for military and civil high-tech fields such as electromagnetic protective clothing and invisibility. The method has the advantages of short production period, high raw material utilization rate and the like.

The invention discloses a preparation method and application of a manganese fluoride / carbon nanofiber composite material. The method comprises the following steps: dissolving metal salt and a fluorine-containing high polymer material in an organic solvent to obtain a precursor solution; performing electrostatic spinning on the precursor solution to obtain nanofibers, and drying to remove the solvent; and calcining the nanofiber in an inert atmosphere, and fluorinating and carbonizing at the same time. The method disclosed by the invention is simple in process, the manganese fluoride / carbon nanofiber composite materials with different particle sizes can be prepared by adjusting the concentration of a manganese source and the pyrolysis temperature, and the prepared material has excellent electrochemical performance and is a promising negative electrode material for the potassium ion battery.

The invention provides a preparation method of AgCuTi alloy powder. The preparation method comprises the following steps: providing an Ag / Ti / Cu three-layer composite material; the Ag / Ti / Cu three-layer composite material is repeatedly folded and then subjected to cold compounding for N times, and an AgCuTi multi-layer composite strip is obtained; the AgCuTi multi-layer composite strip material is rolled up to form an AgCuTi roll material; the AgCuTi roll material is conveyed into atomization equipment, and plasma atomization is carried out on the AgCuTi roll material; and blowing air into an atomizing area in the atomizing equipment to obtain the required AgCuTi alloy powder. According to the method, the mode of combining the multiple processes of folding and then cold compounding and plasma atomization is adopted, the prepared material is uniform and stable, and the wettability, spreadability and quality consistency of the AgCuTi powder are improved.

The invention provides a red mud resource reutilization method which comprises the following steps: weighing raw materials according to the proportion of the raw materials, and grinding the raw materials into powder to obtain mixed powder; the raw materials comprise 70%-95% of matrix ceramic, 0.1%-30% of auxiliary ceramic and 0.1%-30% of red mud. Putting the mixed powder into a planetary ball mill, taking out after wet milling, and drying in a vacuum drying oven; crushing the dried powder by using a crusher, and screening by using a screen; the sieved powder is loaded into a graphite mold to be pre-pressed; and sintering the graphite mold filled with the green body in a discharge plasma sintering furnace. And cooling along with the furnace to obtain the red mud doped alumina-based composite ceramic material. According to the method for recycling the red mud, efficient utilization of the red mud is achieved, the red mud is combined with aluminum oxide and auxiliary ceramic, the red mud-doped aluminum oxide-based composite ceramic material is prepared through the processes of high-energy ball milling, spark plasma sintering and the like, and the prepared material has the advantages of being high in toughness, hardness and strength and the like.

The utility model provides spray drying equipment and a battery production system.The spray drying equipment comprises a drying tower, a double-fluid nozzle, an ultrasonic generator and a drying device, a containing cavity is formed in the drying tower, the double-fluid nozzle is connected to the drying tower, and the double-fluid nozzle is used for atomizing fluid materials through compressed gas and spraying the fluid materials into the containing cavity; the ultrasonic generator is arranged at a nozzle opening of the double-fluid nozzle, and the drying device is used for introducing dry gas into the containing cavity so as to dry the fluid materials into powder. In the structure, the ultrasonic generator is arranged at the nozzle of the double-fluid nozzle for spraying the atomized fluid material into the accommodating cavity, so that the particle size of fog drops can be further reduced, the particle size of prepared powder is relatively small, and residual materials at the nozzle of the double-fluid nozzle can be removed, so that the double-fluid nozzle can spray smoothly; the process of preparing the powder is stable, and the quality of the prepared material is improved.

The invention discloses a flame-retardant and high-temperature-resistant material for a fireproof air duct and a preparation method of the flame-retardant and high-temperature-resistant material, and the flame-retardant and high-temperature-resistant material comprises the following raw materials in parts by weight: 60-70 parts of magnesium oxide, 35-45 parts of magnesium sulfate, 45-60 parts of water, 15-25 parts of expanded perlite, 10-15 parts of mica powder, 10-15 parts of modified mineral fiber, 8-12 parts of quartz powder, 3-5 parts of silica fume, 0.5-0.8 part of a retarder and 1-1.5 parts of a waterproof modifier. The flame-retardant and high-temperature-resistant material of the fireproof air duct is a multi-component composite inorganic material system, magnesium sulfate cement with the natural fireproof advantage is used as the basis, basic physical properties are optimized by compounding and using multiple functional fillers with light weight, heat resistance, activity and the like, and modified mineral fiber prepared by a specific method is added as a key reinforcing phase, so that the flame-retardant and high-temperature-resistant fireproof air duct is obtained. The mechanical property and the structural stability of the material at high temperature are remarkably improved, so that the prepared material has the characteristics of good flame retardance, high temperature resistance, good mechanical property, light weight and durability, and is particularly suitable for a fireproof air pipe material.

The invention relates to the technical field of agricultural films, and particularly discloses a preparation method of a light nano regulating agent, which comprises the following steps: step 1, preparing materials: preparing an aluminate coupling agent and an inorganic nano material dispersing agent in a weight ratio of 2: 100; 2, mixing: stirring the raw materials prepared in the step 1 at a high speed, and fully mixing the raw materials to prepare a modified inorganic nano material dispersing agent; 3, the weight ratio of the color regulating agent to the modified inorganic nano material is 10: 100, and the light nano regulating agent is prepared after high-speed stirring and mixing; the inorganic nano-material dispersing agent is one or more of nano BaSO4, nano CaCO3 or nano SiO2, a high-speed stirrer is used for high-speed stirring in the step 2, the aluminate coupling agent reacts with hydroxyl or carboxyl on the surface of the inorganic nano-dispersing agent through alkoxy, and the hydrophilic nano-material is converted into organic affinity, so that the interface bonding force between the hydrophilic nano-material and the resin is enhanced; the light nano regulating agent has the characteristics of simple process and low cost, and the light conversion performance of an agricultural film can be improved by using the light nano regulating agent to prepare the agricultural film.

The invention belongs to the field of positive electrode materials, and particularly relates to a core-shell ferromanganese phosphate precursor, a modified lithium ferric manganese phosphate material, a preparation method and application of the modified lithium ferric manganese phosphate material and a lithium ion battery. The core-shell ferromanganese phosphate precursor comprises a core and a shell wrapping the core, and the core is Fe3 (PO4) 2; the shell is MnxFe1-x (PO4) y (ferromanganese phosphate), x is more than or equal to 0.1 and less than or equal to 0.9, and y is more than or equal to 0.67 and less than or equal to 0.75. The invention provides a core-shell ferromanganese phosphate precursor which takes Fe3 (PO4) 2 as a core and MnxFe1-x (PO4) y as a shell, and when the core-shell ferromanganese phosphate precursor is used for preparing lithium ferromanganese phosphate, the problem of component segregation is solved, and the Jahn-Teller effect of manganese is reduced; especially for subsequent doping and coating, doping segregation is expected to be reduced, coating interface impedance is reduced, and rapid charging of the prepared material and cycling stability under large current can be remarkably enhanced.

The invention relates to the technical field of adsorption materials, in particular to a preparation method and application of iron-crosslinked sodium alginate modified bagasse biochar, which comprises the following steps: respectively pretreating red mud and bagasse, and then mixing the pretreated product with melamine to obtain a mixed material; the mixed material is placed in a protective atmosphere for pyrolysis treatment, and modified bagasse biochar is obtained; mixing the modified bagasse charcoal with a sodium alginate solution, performing ultrasonic treatment, heating and stirring to obtain a blended solution; the preparation method comprises the following steps: mixing bagasse and sodium alginate in a mixed solution, dropwise adding the mixed solution into a ferric chloride solution for standing and cross-linking, and carrying out washing treatment, freeze drying and grinding to obtain sodium alginate modified bagasse biochar, the method adopts bagasse as a biochar raw material, and introduces a magnetic material, a nitrogen-containing substance and sodium alginate to modify the biochar function; the surface active sites of the prepared material are increased, the adsorption capacity on tetracycline hydrochloride is improved, and the resource high-value utilization of the red mud and bagasse solid waste is realized.

The invention discloses a silicate modified polyurethane material for coal and rock mass reinforcement and a preparation device, and relates to the technical field of silicate modified polyurethane materials.A component A based on silicate is matched with a component B based on polymerized MD I to generate the polyurethane material, the stability of an inorganic material and the flexibility of an organic material are both considered, and the performance of the material is improved; the reinforcing agent can be attached to the rough porous surface of the coal and rock mass to achieve sufficient permeation and can also adapt to subsequent tiny deformation of the coal and rock mass, the reinforcing effect is more reliable, and the strength and integrity of the coal and rock mass are greatly enhanced. In the preparation process, a silicate modified polyurethane material preparation device is used, it can be guaranteed that the temperature in a whole heat dissipation cavity is uniform, in the lifting process of a mixing barrel, solid impurities generated by premixing can be intercepted in the mixing barrel and prevented from being mixed with follow-up prepared materials, and successive adding and liquid flow disturbance are matched with each other, so that the mixing efficiency is improved. The mixing effect is enhanced, agglomeration is avoided, and quality is guaranteed.

The invention discloses a light quantum carrier energy charging method, which comprises the following steps of: (1) preparing a core material, namely preparing materials required in a core storage functional material in the preparation process of an energy carrier and materials required in the preparation of a surface light guide material; and (2) material preparation: metering the prepared materials according to the weight parts to obtain a core storage function material and a surface photoconductive material. According to the light quantum carrier energy charging method, the rotating disc is arranged in the energy loading area, and the rotating disc has the functions of rotation and revolution, so that the energy carriers can receive energy emitted by a plurality of emitters at the same time when rotating along with the rotating disc, and energy charging work of the plurality of energy carriers can be carried out at the same time; therefore, a plurality of carriers charged with energy can be conveniently placed at the same time subsequently, and the effect of efficiently treating the water body in the water area is achieved.

The invention discloses a preparation method of a high-strength corrosion-resistant PVDF-based composite material, and belongs to the technical field of composite materials. The method mainly comprises the following steps: (1) preparing surface nanocrystallization carbon fibers with SiO2 nano layers on the surfaces through alkali liquor activation, silanization and in-situ growth processes; (2) preparing fluorine-containing modified graphene oxide; (3) mixing the filler with PVDF resin, introducing a VDF monomer for in-situ polymerization, and constructing a chemical bonding interface; (4) respectively preparing outer layer slurry rich in nano TiO2, middle layer slurry rich in surface nanocrystallization carbon fibers and inner layer slurry rich in SiO2 coated Al2O3 core-shell nanoparticles by quantitatively supplementing specific filler; and (5) carrying out gradient tape casting, segmented drying, hot press molding and annealing treatment to prepare the composite material. The problems that a traditional PVDF material is weak in interface bonding and corrosion resistance and strength are difficult to consider at the same time are solved, and the prepared material has excellent mechanical strength and strong acid corrosion resistance.

The invention discloses a block magnesium-based composite material capable of quantitatively regulating and controlling the content of nano-particles and a manufacturing method of the block magnesium-based composite material, and belongs to the technical field of metal-based composite material preparation. The method comprises the following steps: providing a magnesium alloy substrate and a cover plate, determining the sectional dimension of a groove of the cover plate according to the volume fraction of target nanoparticles, processing the groove, then filling the groove with the nanoparticles, assembling the cover plate on the substrate in an inverted buckling manner to form a to-be-processed assembly, performing multi-pass stirring friction processing to form a first composite material layer, and stacking the first composite material layer as a new substrate layer by layer to form a second composite material layer; and finally, the target block magnesium-based composite material is prepared. Through the correlation design of the groove size and the target volume fraction, accurate control and uniform dispersion of the nano-particle content are achieved, the problems that a traditional method is high in defect rate, limited in size and the like are solved, the strength and plasticity of the prepared material are remarkably improved, the process is green and environmentally friendly, and the method is suitable for mass production of large-size components and can be popularized to various light metal matrixes; the application prospect is wide.

The invention discloses a high-thermal-conductivity silicon / aluminum composite material and a preparation method and application thereof, and belongs to the technical field of silicon / aluminum composite materials. The preparation method comprises the following steps: carrying out ball-milling mixing on silicon powder and aluminum powder to prepare mixed powder, carrying out primary vacuum hot-pressed sintering to prepare a silicon / aluminum composite material billet, then carrying out vacuum non-pressure high-temperature sintering, and then carrying out secondary vacuum hot-pressed sintering to prepare the high-thermal-conductivity silicon / aluminum composite material. The method can be used for preparing the silicon / aluminum composite material for electronic packaging, the prepared material is high in heat conductivity and density, the used process equipment is simple, and large-scale production can be realized.