82 results about "Liquid gallium" patented technology

The invention belongs to the technical field of liquid metal coating and infiltration in grinding machining, and particularly relates to a temperature-control ultrasonic composite liquid gallium auxiliary grinding device and method for a micro engine blade, and the device comprises a fluid conveying module, a temperature adjusting module, a machining module, an ultrasonic vibration module and an electromagnetic field generator. Temperature control of liquid gallium is achieved by arranging a microwave cavity and a cooling system, stable supply is guaranteed through inert gas and a liquid gallium conveying pipeline, and uniform coating and ultrasonic vibration infiltration on the surface of the blade of the micro engine are achieved by combining an ultrasonic transduction assembly and a spraying nozzle. The electromagnetic field generator further enhances the adhesion and lubrication effects of the liquid gallium on the grinding wheel and the blades. The defects of insufficient grinding temperature control and lubrication of a traditional grinding wheel are overcome, the grinding temperature rise and the friction coefficient are effectively reduced, thermal damage and surface deformation are avoided, and the machining precision and the surface quality of complex curved surfaces and tenon tooth parts are improved.

The utility model belongs to the technical field of liquid containing, and relates to an anti-infiltration structure and a containing device with an anti-infiltration function. The anti-infiltration structure is used for preventing liquid from infiltrating a liquid container and comprises an inner covering film and an anti-infiltration layer, the inner covering film is arranged on the inner wall of the liquid container; the anti-infiltration layer is arranged on the surface of the inner covering film and comprises a plurality of first protruding structures and a plurality of second protruding structures, the first protruding structures are distributed on the surface of the inner covering film at intervals, and the second protruding structures are distributed between every two adjacent first protruding structures at intervals; the height of the first protruding structures is larger than that of the second protruding structures, and the distance between every two adjacent second protruding structures is smaller than the diameter of liquid. According to the anti-infiltration structure provided by the scheme, the problem that the liquid metal gallium is hung on the wall of the container during storage and containing is effectively solved, the utilization rate of the liquid metal gallium is increased, waste is reduced, the inner wall of the container does not need to be cleaned with an acid-base solution, and the liquid metal gallium is prevented from being polluted.

The invention discloses a high-heat-conductivity leakproof liquid metal phase change heat-conducting gasket and a preparation method thereof, and relates to the technical field of heat-conducting gaskets. The preparation method comprises the following steps: alloying high-heat-conductivity low-melting-point liquid metal gallium with high-heat-conductivity metal silver and copper, mixing with a polymer containing a specific functional group, adding a modified heat-conducting filler, and carrying out UV curing to form the heat-conducting gasket. Liquid metal is easily alloyed to form eutectic alloy, the melting point can be increased, a chemical cross-linked network formed by the modified heat conduction filler and UV curing can make up heat conduction loss, a heat conduction path is established, the interface thermal resistance is reduced, and the heat conduction efficiency is remarkably improved. The surface oxide layer interacts with the polar group of the polymer, and the steric hindrance effect of the cross-linked network is combined to synergistically realize the leak-proof effect. The high-heat-conductivity leakproof liquid metal phase change heat-conducting gasket prepared by the invention has the effects of high heat conductivity and leakproof.

The invention discloses a method for recycling silicon industry by-product silicon tetrachloride based on gallium electrode electro-deposition, which is used for solving the problems of low solubility and crystal structure in the process of preparing silicon by an electro-deposition method. According to the method, a deep eutectic solvent system composed of 1, 3-dimethyl-2-imidazolinone and 1, 3-dimethylurea is adopted to efficiently absorb silicon tetrachloride in a green manner and prepare the electrolyte, and the electrolyte is converted into high-purity, uniform and compact silicon crystals by using a liquid gallium electrode electrodeposition technology, so that effective conversion from wastes to high-added-value materials is realized. Meanwhile, the low-toxicity eutectic solvent which is easy to prepare and has good biodegradability is adopted to replace traditional ionic liquid or other chemical reagents, so that the safety, the environmental protection property and the sustainability of the process are remarkably improved, and the treatment cost and the environmental burden are reduced at the same time.

The invention discloses a liquid metal-based catalyst with flowable amorphous cobalt active sites as well as a preparation method and application of the liquid metal-based catalyst. The spherical gallium-based liquid metal loaded amorphous cobalt nanosheet material is synthesized by using a sodium borohydride ice bath method. Due to the optimization of the synthesis process, the amorphous cobalt nanosheets are uniformly distributed on the surfaces of the liquid gallium balls, are small in size, are high in utilization rate and are not easy to agglomerate; the intrinsic flow characteristic of the liquid metal gallium realizes the efficient reverse hydrogen overflow effect, optimizes the formation process of a catalytic reaction intermediate, and accelerates the formation of the intermediate. The composite material has the advantages of low overpotential, high Faraday efficiency, high ammonia production rate, good stability and the like during nitrate electrocatalytic reduction reaction, meets the requirements of production and use, and is low in preparation cost.

The invention discloses a gallium-based liquid metal conductive hydrogel and a preparation method and application thereof.The method includes the steps that firstly, liquid metal gallium is modified through an amphiphilic block copolymer, so that the liquid metal gallium can be stably dispersed in a hydrogel precursor solution, hydroxyl radicals are generated through the liquid metal gallium, and the hydrogel precursor solution is formed; in-situ polymerization of an ionic liquid monomer and an acrylic acid monomer is further initiated to form a second network in the dual-network hydrogel, and the second network cooperates with a borate bond cross-linked polyvinyl alcohol first network to prepare the liquid metal-based conductive hydrogel with excellent conductivity, good mechanical properties and relatively strong interface adhesion. The problems that existing conductive hydrogel is poor in conductive filler compatibility, poor in liquid metal interface stability and the like are solved.

The invention relates to the technical field of heat exchange, and particularly discloses a gallium-based alloy composite working medium and a preparation method thereof.The gallium-based alloy composite working medium comprises a main heat transfer fluid and nano particles dispersed in the main heat transfer fluid, and the main heat transfer fluid is liquid gallium-based alloy; the nano particle comprises a metal core, a non-metal shell layer coated outside the metal core and a carbon nano material layer coated outside the non-metal shell layer. The carbon nanomaterial is modified on the surface of the non-metal shell layer, the dispersion condition of nanoparticles in liquid metal is effectively improved, and meanwhile, the carbon nanomaterial can effectively mask silicon hydroxyl on the surface of the non-metal shell layer and prevent self-polymerization tendency between the non-metal shell layers by modifying the surface of the non-metal shell layer.

The invention relates to the technical field of metal gallium storage, in particular to a storage tank which comprises a first shell used for storing liquid metal gallium; the second shell is arranged on the first shell in a sleeving manner; the temperature adjusting part is arranged between the first shell and the second shell and is used for adjusting the internal temperature of the first shell; and the valve body penetrates through the second shell and is communicated with the first shell, and the liquid metal gallium is released to the acid cooking tank through the valve body. By means of the arrangement, the temperature in the first shell is adjusted through the temperature adjusting part, it is guaranteed that in the storage and carrying process of the storage tank, the metal gallium is always kept in a liquid state, the liquid metal gallium is conveniently and directly released into the acid cooking tank, an additional heating procedure does not need to be arranged, and the metal gallium in the storage tank does not need to be manually carried into the acid cooking tank through an appliance; the working efficiency is improved, the labor intensity is reduced, and subsequent production requirements are met.

The invention discloses a double-carbon material reinforced gallium-based composite heat conduction paste and a preparation method thereof.The method comprises the steps that firstly, liquid gallium, indium particles and tin powder are weighed according to a certain mass ratio and mixed, and gallium-based liquid metal is obtained after heating and stirring; weighing a carbon material, the modified micro powder and molten salt, uniformly mixing, reacting in a tubular furnace under the protection of high-purity argon, cooling to room temperature, and washing, pickling, filtering and drying the mixture to obtain a metallized modified carbon material; adding the modified carbon material into the gallium-based liquid metal, mixing, heating, stirring, compressing and grinding to prepare the double-carbon material reinforced gallium-based composite heat-conducting paste. According to the invention, the problem of poor wettability in the bonding process of a carbon material reinforced phase and a liquid metal matrix can be effectively solved, and the heat-conducting property of the gallium-based composite heat-conducting paste is improved.

A latent heat storage body microcapsule includes a core including gallium or gallium alloy; and a shell covering the core and including gallium oxide. A method for producing the same includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a water treatment step of heating the particles in distilled water to form a gallium hydrate on a surface of each of the particles; and an oxidation treatment step of oxidizing the gallium hydrate to form a shell including gallium oxide. The method includes a particle-forming step of forming gallium or an alloy of gallium in a liquid state into particles; a cooling step of cooling the particles to a solid state; and a pH treatment step of immersing the particles in an aqueous solution having a predetermined pH to form a shell including gallium hydrate.

The application provides a bubble behavior test device and method for simulating a liquid metal cooled reactor, and belongs to the technical field of nuclear engineering. The device aims to solve the problems of high operating temperature, large power consumption and poor safety of a traditional experimental loop using lead-bismuth alloy as a liquid phase medium, and the shortcoming that a traditional contact type measurement method easily causes disturbance to the flow characteristics of fluid. The bubble behavior test device for simulating the liquid metal cooled reactor comprises a flow channel body, a rod bundle matrix and liquid gallium-indium-tin alloy metal arranged in the flow channel body, and a plurality of gas check valves arranged on each rod of the rod bundle matrix; an inert gas output assembly is provided with a plurality of gas output ports and is connected with the gas injection ports on each rod of the rod bundle matrix; an ultrasonic probe array is arranged on the side of the rod bundle matrix and in the central rod; and a fluid circulation assembly is connected with the flow channel body at the inlet end and the outlet end and is used for driving the fluid in the flow channel body to move from top to bottom and separating the gas from the flow channel body. The device is mainly used for simulating the bubble behavior of the liquid metal cooled reactor.

The application discloses a radiation refrigeration coating with a recyclable function and a preparation method thereof, and belongs to the technical field of refrigeration coatings.The coating is composed of base oil 500SN, hollow silica microspheres (SiO2@APTES) modified by a silane coupling agent, a liquid metal-based crosslinking agent (GLM) composed of a self-prepared urea-based monomer (UM), cetyl methacrylate (CMA) modified liquid gallium (Ga), talcum powder, calcium carbonate, ethylene glycol butyl ether, polyacrylate, methyl ethyl ketone oxime and methyl methacrylate.The GLM crosslinking agent in the coating has a reversible thermal stimulation response, can reversibly perform phase conversion under thermal stimulation, and simultaneously endows the coating with recyclable performance.Meanwhile, the introduction of the SiO2@APTES realizes high reflection of sunlight and high emission of a medium and far infrared band, and guarantees excellent radiation refrigeration performance of the coating.

The present disclosure provides: a precursor composition for depositing a thin film including a liquid indium precursor, a liquid gallium precursor, and a liquid zinc precursor; a method for manufacturing a thin film by using the precursor composition; a thin film manufactured by using the precursor composition; and an electronic device including the thin film.

The application discloses a liquid gallium ion source and a gallium ion emission method. The liquid gallium ion source comprises an insulating base, a gallium storage container arranged below the insulating base, the gallium storage container having a containing cavity in which a gallium source is stored, an emission needle fixedly connected with the gallium storage container and extending downward along an axial direction of the gallium storage container from a bottom of the gallium storage container, a heating wire at least partially located in the containing cavity of the gallium storage container and in contact with the gallium source, an electrode assembly comprising first and second column electrodes fixedly and spacedly arranged in the insulating base and used for being fixedly electrically connected with two ends of the heating wire respectively, and a fixing assembly fixedly arranged in the insulating base and fixedly connected with the emission needle, the fixing assembly being not in contact with the heating wire. The application can improve the thermal efficiency of the liquid gallium ion source, reduce ion beam deviation caused by thermal deformation of the emission needle and as far as possible prolong the service life of the liquid gallium ion source.

The invention discloses a self-adaptive magnetic field regulation and control magnetic control directional crystallization process in high-purity gallium production, which comprises the following steps: step 1, raw material pretreatment: putting a gallium raw material containing impurities into a smelting furnace, and heating to a temperature above a melting point, so that the gallium raw material is completely molten into liquid gallium; waste heat is recovered through a heat exchange device in the melting process and is used for preheating subsequent raw materials or other production links; 2, setting a self-adaptive magnetic field: transferring the liquid gallium into a crystallization container with a magnetic field generating device; step 3, accurate temperature control: arranging a plurality of coil heating units and water pipe cooling units outside the crystallization container, and arranging temperature sensors at different heights inside the crystallization container; step 4, crystal separation and post-treatment; the self-adaptive magnetic field regulation and control magnetic control directional crystallization process in high-purity gallium production can ensure the purity and quality of crystals through magnetic field regulation and control during use, can also effectively utilize the waste heat of equipment, reduces the production cost, and is suitable for popularization and application.

The application is a preparation method of fly ash porous hollow microspheres with controllable aperture, which can prepare fly ash porous hollow microspheres with controllable aperture, and the specific process is as follows: the fly ash hollow microsphere FAC raw material is sequentially passed through a 150-mesh screen, and the undersize part is the first particle size range; then it is continuously passed through a 60-mesh screen, and the undersize part is the second particle size range; then it is continuously passed through a 35-mesh screen, and the undersize part is the third particle size range, and the oversize part of the 35-mesh screen is discarded; the density of the fly ash hollow microsphere FAC in different particle size ranges is measured; the fly ash hollow microsphere FAC is processed in a nanoscale aperture by using a focused ion beam method, the ion source is a liquid gallium ion source, and the working distance is 5 mm; firstly, the acceleration voltage of the focused ion beam is determined according to the density of the fly ash hollow microsphere FAC in different particle size ranges; then the scanning speed of the focused ion beam is determined according to the particle size range. The aperture size of the microspheres obtained by the method is controllable and is in a nanoscale, and the requirements of low thermal conductivity and high strength can be met.

The present invention provides a flexible antenna array for wireless microwave energy transmission, belonging to the field of communication technology, which includes a first dielectric substrate, a second dielectric substrate, a patch antenna array, a feeding interface, an equivalent ground plane, and a π-type decoupling network. By applying the printing technology of liquid metal and flexible materials, the present invention invents a liquid metal antenna operating at 5.8 GHz for microwave energy transmission. This liquid metal patch antenna will give full play to the advantages of liquid gallium-indium alloy composite materials and flexible dielectric substrates, such as repairability, flexibility, reconfigurability, anti-fatigue, and corrosion resistance, and is applied in integrated small electronic devices to realize the reception and transmission of electromagnetic waves and is used for long-distance wireless energy transmission.

The invention is suitable for the technical field of electro-catalytic material preparation, and provides a preparation method and application of a foamy copper loaded CuGa2 alloy electrode, according to the method, three-dimensional foamy copper is used as a conductive framework, liquid gallium is introduced in an alkaline environment, and a CuGa2 / foamy copper composite structure with a strong interface coupling effect is formed through an in-situ alloying reaction. In the obtained electrode, a continuous metal-metal interface is formed between the CuGa2 alloy and the copper substrate, so that electron transmission and adsorption activation of NO molecules can be effectively promoted, and the reaction rate and selectivity of ammonia generation are remarkably improved. According to the method, the reaction condition is mild, high-temperature heat treatment is not needed, uniform growth of CuGa2 can be achieved under the low-energy-consumption condition, and excellent structural stability is kept. The prepared CuGa2 / foamy copper composite electrode shows high ammonia yield and excellent Faraday efficiency under the condition of 0.1 V (vs. RHE), and shows good catalytic stability and industrial application potential.

The invention discloses a synthesis method of an AuGa2 compound, the AuGa2 compound and application, and relates to the technical field of preparation of gold-containing compounds. According to the method, a gold source and liquid gallium are used as raw materials, the liquid gallium is used as a pressure medium for pressurization before reaction, and the reaction process is carried out under pressurized and closed conditions. According to the new path for synthesizing the AuGa2 compound, high-temperature or electric arc melting is not needed, the argon atmosphere requirement is avoided, meanwhile, the power consumption in the synthesis process is very low, the reaction time is very short, and carbon dioxide emission and related potential safety hazards can be reduced. Therefore, the synthesis method provided by the invention can greatly reduce the process cost, and is more energy-saving and environment-friendly.

The present invention discloses a gallium heat pipe and a heat exchange device for a reactor. The gallium heat pipe includes a pipe body. One end of the pipe body is a condensation section, the other end of the pipe body is an evaporation section, and there is an adiabatic section between the condensation section and the evaporation section. It is characterized in that a wick is arranged in the pipe body, and gallium and its related working medium are filled in the pipe body and circulate in the pipe body. The gallium heat pipe of the present invention uses liquid metal gallium as the basic working medium. Gallium is in a liquid state at 29.76 °C, and liquid gallium has a wide temperature range and good thermal stability. The present invention can be applied to both medium and low temperature systems and high temperature systems. The implementation scope of the present invention is extensive, simple, convenient and efficient. The gallium heat pipe is particularly suitable for mobile small reactors and can be applied to a wide range of fields such as integrated energy systems, space nuclear reactors, cooling, deep sea, and civil-military integration.

The application discloses a method for preparing holmium-gallium alloy based on fused salt electrolysis, and a product and application thereof, and comprises the following steps: S1, preparing purified lithium chloride-potassium chloride fused salt; S2, heating the purified eutectic fused salt to an electrolysis temperature and keeping constant temperature, setting liquid metal gallium as a working electrode, setting high-purity graphite rod as a counter electrode, setting Ag / AgCl as a reference electrode, adding holmium chloride into the molten fused salt, and the added mass of the holmium chloride is 2%-4% of the total mass of the fused salt; S3, maintaining the electrolysis temperature unchanged, setting the electrolysis potential and time required by the electrolysis experiment, and ensuring that holmium ions are reduced on the surface of the liquid gallium cathode and alloying reaction occurs during the electrolysis process; S4, after the electrolysis is completed, power is cut off, the electrolysis device is naturally cooled to room temperature, the cathode alloy product is collected after standing and layering, and the holmium-gallium alloy is obtained after washing and drying treatment. The application realizes efficient, stable and controllable preparation of the holmium-gallium alloy.

The present application relates to a kind of forming grinding method for thin-walled gear, belong to the lubrication cooling technical field in grinding processing, method as follows: liquid gallium is transported to the detachable sealed gallium delivery box of electrostatic spraying module, part of liquid gallium in detachable sealed gallium delivery box enters pressurized pipeline pressurization;Part of liquid gallium enters electric field application cavity, realizes particle charging atomization under the action of electrostatic field and is sent to uniform electric field duct.Switch off control switch at the same time, after the electric field in uniform electric field duct is stable, liquid gallium in pressurized pipeline flows into uniform electric field duct.In the uniform field effect, liquid gallium in uniform electric field duct is uniformly charged atomization, and charged liquid gallium after atomization is sprayed to workpiece surface.Grinding workpiece surface, temperature control module adjusts workpiece surface temperature in real time, maintains the state of dynamic conversion between liquid gallium and solid liquid.The present application effectively solves the problem that cooling liquid is difficult to penetrate to the depth of tooth surface in thin-walled gear forming grinding, and improves the quality and efficiency of forming grinding.

The present application relates to a kind of forming grinding device for grinding thin-walled gear, belong to the lubrication cooling technical field in grinding processing, including electrostatic spraying module, temperature regulation module and grinding wheel;Grinding wheel has inner runner, electrostatic spraying module sprays liquid gallium to the workpiece surface ground by grinding wheel;Electrostatic spraying module includes pressurizing module, charge application module and conveying module;After liquid gallium is transported to detachable closed gallium delivery box, part is pressurized after entering uniform electric field conduit by pressurizing pipeline, part enters the electric field particle charging by detachable closed gallium storage cavity, and is sent to uniform electric field conduit, under the action of electric field, all liquid gallium in uniform electric field conduit is uniformly charged, and is sprayed to workpiece surface by conveying module;The temperature regulation module adjusts workpiece surface temperature, maintains liquid gallium solid-liquid conversion.The present application effectively solves the problem that coolant is difficult to penetrate to the depth of tooth surface in thin-walled gear forming grinding, and improves the quality and efficiency of forming grinding.

The invention provides a liquid metal cooling reactor bubble behavior simulation test device and method, and belongs to the technical field of nuclear engineering. The invention aims to solve the problems of high operating temperature, high power consumption and poor safety of a traditional experimental loop using lead-bismuth alloy as a liquid phase medium, and the defect that a traditional contact measurement method is easy to cause interference on the flow characteristics of fluid. A liquid metal cooling reactor bubble behavior simulation test device comprises a flow channel body, a rod bundle matrix and liquid gallium-indium-tin alloy metal are arranged in the flow channel body, and each rod of the rod bundle matrix is provided with a plurality of gas check valves; the inert gas output assembly is provided with a plurality of gas output ports which are correspondingly connected with the gas injection ports in the rods of the rod bundle matrix; the ultrasonic probe array is arranged on the periphery of the rod bundle matrix and inside the central rod; the inlet end and the outlet end of the fluid circulation assembly are both connected with the flow channel body, and the fluid circulation assembly is used for driving fluid in the flow channel body to act from top to bottom and separating gas out of the flow channel body. The device is mainly used for simulating liquid metal cooling reactor bubble behaviors.

The invention is suitable for the technical field of water-based zinc batteries, and provides a modified water-based zinc ion battery negative electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: heating and melting metal gallium; metal indium is poured into liquid gallium and stirred to be molten, and an alloy solution is obtained; zinc powder is poured into the alloy solution to be stirred until the liquid becomes solid; according to the method, the zinc negative electrode is integrally constructed, zinc dendritic crystal growth is effectively inhibited, the steps are carried out under the condition of an external magnetic field, and the magnetic field intensity of the external magnetic field is 0-0.3 T. According to the method, 0-0.3 T magnetic field intensity is additionally applied while the electrochemical performance of the zinc ion battery is tested, so that ions and electrons are changed into an ordered state from a disordered state under the action of Lorentz force, and meanwhile, the motion trail is changed, so that more active sites can be provided; the interaction of the magnetic field and the electric field enhances the mass transfer of the electrolyte during zinc deposition / dissolution, reduces the polarization of the battery, and realizes the improvement of the cycling stability of the zinc battery.

The application discloses a method and device for batch production of high-purity gallium oxide without solvent and catalyst, and particularly relates to the technical field of semiconductor material preparation, and comprises the following steps: (a) placing metal gallium into a crucible, and forming liquid gallium by vacuumizing and heating treatment; (b) performing mechanical crushing treatment on the liquid gallium for multiple times to obtain micron to nanometer gallium particles; (c) performing grading separation on the gallium particles obtained in the step (b) to collect ultra-fine gallium particles; (d) sending the ultra-fine gallium particles into a reactor to perform multistage oxidation reaction with oxygen to generate Ga2O3 crystal grains in a polymorphic form; (e) performing high-temperature treatment on the Ga2O3 crystal grains in the polymorphic form to convert the Ga2O3 crystal grains into molten and stable state beta-Ga2O3 crystal grains; and (f) performing rapid cooling and solidification on the molten and stable state beta-Ga2O3 crystal grains to obtain beta-Ga2O3 powder or particles. The application lays a solid foundation for obtaining electronic-grade ultra-high-purity beta-Ga2O3 powder.

The invention discloses a refining system and a refining method of crude gallium. The refining system comprises a first acid pickling reaction device, a second acid pickling reaction device, a third acid pickling reaction device and a fourth acid pickling reaction device, the cleaning and impurity removing device is connected to the first acid pickling reaction device and is configured to receive the liquid gallium obtained after acid pickling and perform washing and impurity removing so as to obtain refined gallium; the second pickling reaction device is connected to the cleaning and impurity removing device and is configured to receive the refined gallium and the diluted hydrochloric acid solution and perform pickling treatment; the separation device is used for separating the material pickled by the second pickling reaction device to obtain high-purity liquid gallium; the checking device is used for receiving the high-purity liquid gallium and checking whether the high-purity liquid gallium is qualified or not; the packaging device is used for receiving the qualified high-purity liquid gallium and packaging the qualified high-purity liquid gallium; wherein the first acid pickling reaction device is further used for receiving unqualified high-purity liquid gallium. The coarse gallium is refined through the steps, so that the impurity removal effect and the production efficiency are improved.

The invention provides a stimulus-responsive elastic composite material based on liquid metal phase change and a preparation method thereof, and the preparation method comprises the following steps: taking liquid metal gallium, liquid gallium-zinc alloy or liquid gallium-tin alloy as a matrix, adding a nano heterogeneous nucleating agent X into the matrix, carrying out ultrasonic dispersion, heating and uniformly mixing to prepare Ga-X heterogeneous nucleation particles, wherein the lattice mismatch degree of the nano heterogeneous nucleating agent X is lt; the particle size of the nano heterogeneous nucleating agent is 30 to 60 nm; and uniformly stirring the Ga (at) X heterogeneous nucleation particles, thermochromic powder and a PVA elastomer, preheating, and curing to obtain the stimuli-responsive elastic composite material. The nano heterogeneous nucleating agent X is introduced into the liquid metal, the nucleating behavior of the liquid metal is adjusted, the phase change energy barrier is reduced, the response capacity to external stimulation is enhanced, and the liquid metal elastomer composite material is prepared from the nano heterogeneous nucleating agent X, the PVA elastomer and the thermochromic powder.

The application discloses a method and device for detecting impurity element zinc in high-purity gallium. The detection method comprises the following steps: taking a mixed centrifugal extraction tube, adding a high-purity gallium sample, adding a solution containing a high-purity extractant, sealing the mixed centrifugal extraction tube, fixing the mixed centrifugal extraction tube horizontally on a mixed oscillation extractor, performing oscillation extraction, taking out the mixed centrifugal extraction tube, vertically storing the mixed centrifugal extraction tube, making liquid gallium gather at the conical bottom of the mixed centrifugal extraction tube, separating the extraction liquid, and using internal standard calibration ICP-MS to detect the impurity zinc content. The volume concentration of the high-purity extractant in the solution containing the high-purity extractant is 1-10%, and the high-purity extractant is selected from one of hydrochloric acid, nitric acid and sulfuric acid. The detection method provided by the application has the advantages of simple process, short flow, easy operation, fast extraction and separation speed, clean matrix removal, complete impurity retention and good reproducibility.

This invention relates to a composite phase change film material and its preparation method based on a dual-functional filler reinforcement, belonging to the field of phase change composite material technology. The method includes the following steps: The composite phase change film comprises a poly(p-phenylbenzobisoxazole) nanofiber substrate, phase change microcapsules, liquid gallium metal modified with thermally conductive boron nitride nanosheets, and thermochromic ink. The prepared liquid gallium metal modified with boron nitride nanosheets has a core-shell structure with an average particle size of 576.9 nm. The prepared composite phase change film possesses excellent thermal conductivity, high heat storage performance, outstanding mechanical properties, and flexibility. Furthermore, this composite phase change film exhibits passive thermal management and active safety warning effects, achieving a dual thermal protection function combining visual cues for heat storage and temperature control. In a small car model, it not only triggered a blue-to-yellow color transition at 50°C, providing an intuitive temperature warning, but also achieved a temperature suppression effect of 5.9°C.