14 results about "Materials preparation" patented technology

The invention provides a system for continuously recycling a waste ternary lithium-ion battery and belongs to the technical field of recycling of lithium-ion batteries. The system comprises a pre-treatment unit, an acid leaching unit, a primary impurity removal unit, a co-precipitation unit, a secondary impurity removal unit and an ammonia recycling unit, wherein the pre-treatment unit comprises apulverizer, a pulse dust collection device, a positive and negative electrode powder cabin and a separation machine; the acid leaching unit comprises a leaching reaction kettle and a micro-filteringmachine I; the primary impurity removal unit comprises an impurity removal reaction kettle and a squeezing machine; the co-precipitation unit comprises a material preparation kettle, a co-precipitation reaction tank and a centrifugal machine; the secondary impurity removal unit comprises a secondary impurity removal reaction kettle and a micro-filtering machine II; the ammonia recycling unit comprises a heater, an evaporation crystallization device, a condenser and an ammonia liquid receiving tank. The invention further provides a technology for continuously recycling the waste ternary lithium-ion battery by utilizing the system. According to the system provided by the invention, a prepared nickel-cobalt-manganese ternary material precursor has high purity and large tap density; grains have a small grain diameter and narrow distribution and are uniformly mixed; a lithium sulfate solution can be directly used for producing lithium carbonate.

The invention relates to the technical field of nano photocatalytic material preparation and hydrogen production application thereof, and in particular relates to a silver sulfide/tungsten trioxide-based z-type photocatalytic material as well as a preparation method and application thereof, the silver sulfide/tungsten trioxide-based z-type photocatalytic material has a zero-dimensional/one-dimensional composite structure, the zero-dimensional structure is silver sulfide nano-particles, the one-dimensional structure is a tungsten trioxide nanorod, and the silver sulfide nano-particles are dispersed on the surface of the tungsten trioxide nanorod. WO3 and Ag2s are respectively provided with one-dimensional and zero-dimensional structures, and the migration path of photogenerated charges canbe shortened, so that the photogenerated charges are rapidly transferred to the surface of the material, and the composite probability of photogenerated carriers in a material body phase is reduced; the photogenerated charge transfer mode between Ag2SNPs and WO3NRs follows a z-type photo-catalytic charge transfer mechanism, while the photogenerated charge oxidation reduction capability is maintained, the separation efficiency of the photongenerated carriers is further improved, and the silver sulfide/tungsten trioxide-based z-type photocatalytic material has better performance of photocatalytic water decomposition for hydrogen production.

The invention discloses an inorganic sensitive layer based surface enhanced Raman spectrum detection technology and material preparation thereof. According to the detection technology, a surface enhanced Raman spectrum material based on an inorganic sensitive layer is used as an active substrate of a surface enhanced Raman scattering, and is exposed in the small molecule atmosphere; a new solid substance formed by specific reaction of the inorganic sensitive layer and small molecules to be detected by a Raman spectrometer is detected, and the type of the small molecules is obtained according to the Raman spectrum of the new solid substance; according to the preparation method, a colloid electrostatic self-assembly method, a thiourea-induced isotropic shell growth method, a metal halogenation method and a physical deposition method are used for a precious metal nanoparticle colloidal solution, a metal salt solution and a thiourea solution to prepare the material in which precious metalnanoparticles are coated with a metal oxide layer, or the precious metal nanoparticles are coated with a metal sulfide layer, or the precious metal nanoparticles are coated with a metal halide layer.The technology can be used for real-time online detection of hydrogen sulfide, carbon disulfide, hydrogen chloride, mustard gas, nitrogen dioxide and the like.

The invention provides a preparation method of a nanofiltration film, belongs to the field of film separation material preparation, and solves the problems that the industrialized continuous preparation of the nanofiltration film with the molecular weight cut-off between 1500 and 20000 Daltons cannot be easily realized in the prior art. The preparation method of the nanofiltration film comprises the following steps: putting polysulfone and dimethylacetamide into a batching kettle, setting the temperature of heat transfer oil at 90-100 DEG C, stirring a casting solution until transparent, and transferring the casting solution to a storage tank; defoaming under vacuum the casting solution, and keeping the temperature of the casting solution constant for later use when the temperature of thecasting solution is reduced to use temperature; coating a non-woven fabric with a 30-50 micron supporting layer by the casting solution by casting and scraping, and curing and rinsing to obtain a supporting bottom film layer; after the supporting bottom film layer enters a water phase solution tank for infiltration and is extruded by an extrusion roller, using a cleaning solution to perform secondary cleaning treatment on the film surface of the supporting bottom film layer, and removing the residual water phase solution by a secondary extrusion roller; coating the film surface containing a water phase monomer with solvent oil containing organic monomers, and drying to obtain the nanofiltration dry film. The molecular weight cut-off of the nanofiltration film prepared by the method is between 1500 and 20000 Daltons.

The invention relates to a functional textile and aims to provide a preparation method of a color-changeable cloth capable of quickly indicating heavy metal ions in water. The provided method should be simple and efficient to prepare the color-changeable cloth so as to realize rapid detection of the heavy metal ions in water. Another object of the present invention is to provide a method for detecting heavy metal ions in water by using the color-changeable cloth. The technical solution is as follows: the preparation method of the color-changeable cloth capable of quickly indicating heavy metalions in water is carried out according to the following steps: 1) material preparation: (1) color developing agent working liquid: weighing 0.5-5g of malachite green, and dissolving the malachite green with a 0.1-1.0% ethanol aqueous solution in a 100-1000mL volumetric flask to constant volume to obtain the color developing agent working liquid; and (2) dyeing material: a dry cotton cloth is adopted; and 2) cloth coloring.

The invention discloses a fish roe based porous carbon material. Fish roes are pre-carbonized at a low temperature to form a carbon precursor, and the carbon precursor and alkaline inorganic substances are directly mixed to prepare the fish roe based porous carbon material by calcination. A preparation method includes steps: 1) carbon precursor preparation; 2) carbon precursor activation; 3) porous carbon material aftertreatment. In application to an electrode material of supercapacitors, when the current density is 1A g<-1>, and a specific capacitance range is 222-396 F g<-1>. The method is simple in process, convenient to operate and easy to implement, and the prepared fish roe based porous carbon material serving as the electrode material of the supercapacitors is excellent in performance.

The invention belongs to the technical field of ultra-pure material preparation, and particularly relates to a multifunctional electron beam zone melting furnace. The multifunctional electron beam zone melting furnace comprises an upper feeding and clamping mechanism 1, a furnace body 2, an electronic gun 3, a vacuum system 4, a rack 5, an electronic gun moving mechanism 6, a lower feeding and clamping mechanism 7, an observation window 8, a control box 9, a high-voltage power supply, an automatic control system and a water cooling system; and the end portion, extending into the furnace body 2, of the upper feeding and clamping mechanism 1 is an upper clamping head, and a to-be-melted bar is clamped at the upper clamping head. The function of synchronous coordinated movement of the gun body and the feeding and clamping mechanism can be achieved, diversification of smelting materials can be achieved, the structure is compact, the requirement for smelting of bars with the diameter of 50mm can be met, the layout is reasonable, and maintenance is convenient.

The invention belongs to the technical field of heat preserving material preparation, and provides a low-energy-consumption medical refrigerator heat preserving material and a preparing method thereof. The low-energy-consumption medical refrigerator heat preserving material is prepared from, by weight, 50-75 parts of chrysotile, 15-23 parts of sepiolite, 2-9 parts of expanded perlite, 11-15 parts of polyether polyol, 11-15 parts of foaming agent, 11-15 parts of foaming stabilizer and 15-23 parts of polyurethane resin. The invention aims to provide the low-energy-consumption medical refrigerator heat preserving material and the preparing method thereof. The heat preserving material effectively reduces the heat conductivity coefficient of polyurethane foam and energy consumption of a refrigerator, the heat conductivity coefficient is 6.0-17.5 Mw/m.K, the medical refrigerator heat preserving material is excellent in low-temperature-resistant size stability, high in compression strength, environmentally friendly and capable of being used under the long-term low temperature conditions.

The invention relates to the field of metal material preparation, in particular to a method for improving the indoor temperature compressing plasticity of an amorphous alloy. The method aims at solving the technical problem that due to the fact that an extremely localized shear band of an existing bulk amorphous alloy is fast expanded, a material fails and cracks. The method comprises the steps of1 assembling and 2 smelting. The technical method for manufacturing an amorphous alloy composite is simple, materials are wide and easy to obtain, the brittleness problem for large-scale industrialized application of the amorphous alloy can be solved well, and large industrialized application prospects are achieved. The method is used for preparing the amorphous alloy with good indoor temperaturecompressing plasticity.

The invention discloses a highly-conductive carbon material and a low-temperature preparation method thereof. The low-temperature preparation method is characterized in that a precursor rich in terminal alkynyl groups is reacted in a gas atmosphere or a vacuum environment to obtain black solid powder which is the highly-conductive carbon material; the precursor rich in terminal alkynyl groups contains at least three terminal alkynyl groups; and the precursor rich in terminal alkynyl groups has a conjugate structure. The carbon material is obtained through low-temperature chemical synthesis under very mild conditions by using the precursor rich in terminal alkynyl groups through using the high activity characteristic of the alkynyl groups, the preparation efficiency of the low-temperature preparation method is greatly more than that of existing carbon material preparation technologies, and the carbon material obtained through the method has the advantages of good conductivity, good stability and excellent processing performances. The method has the advantages of simple process, low cost, wide application range, facilitation of industrial large-scale production, and facilitation of further promotion of the carbon material to many application fields needing mild conditions.

The invention discloses a preparation method of a special-morphology micro nano structural lithium-rich manganese-based cathode material, and belongs to the technical field of novel energy material energy storage material preparation processes. The method comprises the following steps: dissolving a manganese salt and a nickel salt into distilled water according to a ratio to obtain an A liquid; dissolving a homogeneous precipitant weighed according to a ratio into distilled water to obtain a B liquid, introducing a certain ratio of an ionic liquid into the B liquid, performing full stirring, and performing uniform mixing; mixing the A liquid and the mixed B liquid, and performing full stirring; transferring the mixed liquid to a hydrothermal reaction kettle, performing a hydrothermal reaction, performing cooling to room temperature, performing centrifugal separation, performing washing, and performing drying to obtain a manganese-based precursor material; and finally grinding the precursor and a certain ratio of lithium carbonate, performing uniform mixing, performing pre-sintering, and performing calcination to obtain the lithium-rich manganese-based cathode material. The method provided by the invention solves the problems of high energy consumption, long consumed time and difficulty in control of product topography characteristics in the preparation process in the prior art.

The invention discloses a manufacturing method for a colored flowerpot. The manufacturing method for the colored flowerpot comprises the following steps: S1, material preparation: weighing 50 to 70 parts of Al2O3, 30 to 50 parts of Fe2O3, 20 to 40 parts of SiO2, 10 to 18 parts of glass fiber, 1 to 2 parts of ZrO2, 1 to 2 parts of CaCO3, 0.1 to 0.5 part of ZnO and 0.5 to 1.5 parts of CaO, successively adding the above raw materials into a batch can, adding 20 to 30 parts of clear water and carrying out continuous stirring for 5 to 10 min so as to obtain a mixture; S2, construction and preparation of a green body: preparing a green flowerpot body with a preset shape from the mixture, trimming the green flowerpot body and then carrying out drying so as to obtain a prefabricated flowerpot; S3, sintering: continuously sintering the prefabricated flowerpot at 800 to 900 DEG C for 10 to 14 h; and S4, washing with water. The method provided by the invention is simple; and the produced flowerpot has a colored surface, presents retro artistic sensation, is beautiful and durable, meets daily demands of people and has good market prospects and usage value.