346 results about "Physisorption" patented technology

The invention relates to a low-dielectric-loss high-thermal-conductivity epoxy resin composite material and a preparation method thereof, and the preparation method comprises the following steps: carrying out surface modification treatment on a thermal conductive filler: carrying out surface modification on the thermal conductive filler by adopting a chemical covalent bonding or physical adsorption mode, the heat-conducting filler is used for improving the compatibility of the filler and an epoxy resin matrix and reducing the interface thermal resistance, and comprises boron nitride with a two-dimensional sheet structure; epoxy resin, a curing agent and an optional modifier are evenly mixed, the epoxy resin is selected from epoxy resin with the low polarity characteristic, and the modifier comprises at least one of thermoplastic resin or elastomer. And the process is simple and controllable.

The invention discloses a compound environment-friendly corrosion inhibitor as well as a preparation method and application thereof. The choline ionic liquid comprises choline ionic liquid and amino acid, the choline ionic liquid is choline cations; the amino acid is one or more of cysteine and tryptophan. The compound environment-friendly corrosion inhibitor has high corrosion inhibition efficiency, and the compound structure of the compound environment-friendly corrosion inhibitor further improves the protection performance of the compound environment-friendly corrosion inhibitor through a dual adsorption mechanism of the synergistic effect of physical adsorption and chemical adsorption on the metal surface. According to the compound environment-friendly corrosion inhibitor, a full-green ionic liquid corrosion inhibition system is constructed, the environment-friendly requirement is met, and a metal protection solution can be provided for industrial acid pickling and other strong acid working conditions. Not only is the progress of a corrosion inhibition technology promoted, but also more economic and environment-friendly anti-corrosion application can be provided for actual industrial scenes.

The invention discloses application of a carbon steel corrosion inhibitor based on combination of physical adsorption, chemical adsorption and hydrophobic barrier, and relates to the technical field of metal corrosion inhibition. The technical problem that a corrosion inhibitor in the prior art is low in corrosion inhibition efficiency in a high-temperature strong-acid environment is solved. The preparation method of the carbon steel corrosion inhibitor comprises the following steps: firstly, ultrasonically dissolving 4-aminopyridine to obtain a solution I; then, dropwise adding an isopropanol solution of 2, 3-epoxypropyltrimethylammonium chloride into the solution I according to a molar ratio of 1: 1, removing a solvent through a rotary evaporation method, washing with ethanol, centrifuging to obtain quaternized 4-aminopyridine, and drying the quaternized 4-aminopyridine; and finally, the dried quaternized 4-aminopyridine and bromododecane are added into acetonitrile for a reaction, diethyl ether is dropwise added into obtained reaction liquid for precipitation, and the quaternized 4-aminopyridine-bromododecane carbon steel corrosion inhibitor is obtained after drying. The prepared carbon steel corrosion inhibitor is high in corrosion inhibition efficiency in a high-temperature and strong-acid environment.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The application discloses a method for reducing water content and water absorption of solid electrolyte. It relates to the field of solid or semi-solid batteries. The method for reducing water content and water absorption of solid electrolyte comprises the following steps: S1, heating the solid electrolyte powder by using infrared heating mode to remove water and / or impurity organic matter adsorbed on the surface of the solid electrolyte powder; S2, making the solid electrolyte powder in a fluidized state, heating and vaporizing low-surface-energy organic matter, and making the generated organic vapor contact with the solid electrolyte powder in the fluidized state in an inert atmosphere, wherein the temperature of the solid electrolyte powder in the fluidized state is lower than that of the organic vapor. The application aims to solve the technical problem that high specific surface area inorganic solid electrolyte powder is easy to physically adsorb water in air.

The invention provides an electrolyte, a lithium iron manganese phosphate battery and an electric device. The electrolyte comprises a lithium salt and a solvent, the solvent comprises ethylene carbonate, propylene carbonate, ethyl methyl carbonate, fluorobenzene and a low-viscosity solvent in a volume ratio of (2-5): (2-5): (3-5): (3-5): (2-5). The high dielectric constants of ethylene carbonate and propylene carbonate improve the dissolving capacity of the electrolyte to lithium salt, and meanwhile, the molecular structure can form a stable interface layer on the surface of a positive electrode to inhibit migration and dissolution of manganese ions; due to the low viscosity characteristic of the low-viscosity solvent, the overall viscosity of the electrolyte is reduced, and the permeability of the porous positive electrode material is enhanced, so that the wettability is improved, and uniform de-intercalation of lithium ions is promoted; a physical adsorption protection layer can be formed on the surface of the positive electrode through the coordination effect of high-electronegativity fluorine atoms in fluorobenzene and manganese, and direct contact between manganese and electrolyte is further blocked.

The invention provides a micro-polluted water purification device and method, and belongs to the technical field of water treatment. The problems that an existing micro-polluted water purification technology is dual-polarized, purification is not thorough, secondary pollution is prone to being generated, and adaptability is poor are solved. The method comprises the following steps: in a pretreatment unit, intercepting large-particle suspended impurities through a bionic cilium type interception structure, and regularly carrying out backwashing; in the bionic primary filtering unit, colloidal particles, microorganisms and macromolecular organic matters are filtered out through a bionic glomerular filtering structure; in the bionic intermediate purification unit, heavy metal ions and small molecular organic matters are adsorbed through a bionic cell membrane adsorption structure; in the bionic deep filtering unit, deep interception and adsorption are carried out through a bionic root system filtering structure; the effluent quality is detected in the effluent unit, and if the water quality does not reach the standard, the effluent flows back to the water inlet end of the pretreatment unit. By means of physical interception and physical adsorption effects of a biological bionic structure and natural degradation of a biological agent, secondary pollution is avoided.

The invention relates to the technical field of road engineering materials, and particularly discloses an ultra-thin anti-sliding layer material based on industrial solid waste. According to the composite filler provided by the invention, the waste plastic, the fly ash and the polymer coated rubber powder are compounded, and a continuous network or sea island structure is formed by the waste plastic, so that rubber powder particles are effectively locked, and the softening flow of the rubber powder particles at high temperature is inhibited, thereby greatly improving the rut resistance of an anti-skid layer material; the elastic particles of the rubber powder are also used as stress concentration points and flexible buffer units, so that the brittle crack propagation of the plastic phase at low temperature is prevented, and the low-temperature crack resistance is improved; the silanized fly ash serves as rigid particles and is dispersed in an organic matrix, when the material is stressed, the rigid particles can bear and disperse stress and improve modulus and compressive strength, after the material is treated by a silane coupling agent, the fly ash particles and organic phases (rubber powder and plastic) form chemical bonds or strong physical adsorption, stress is effectively transmitted at an interface, and the mechanical property of the material is improved. The toughness of the material is improved.

The invention relates to the technical field of cosmetic efficacy in-vitro evaluation, and discloses a cosmetic oil control efficacy determination method based on grease adsorption and decomposition detection, and the method comprises the following steps: providing a biomimetic membrane coated on a substrate, the biomimetic membrane comprises biomimetic sebum, lipase, a pH indicator used for representing the generation amount of sebum decomposition products, and an enzyme activity probe used for representing lipase activity. After a to-be-detected sample is applied and incubated, three-mode detection is executed according to a specific sequence; a physical adsorption index is determined through physical transfer and a weighing method; measuring the biomimetic membrane subjected to physical transfer to obtain a biochemical regulation index reflected by the pH indicator; and adding a non-aqueous activator to activate the enzyme activity probe, and measuring to obtain an enzyme activity influence index. According to the method, three mutually independent quantitative indexes are generated for the same sample through a single continuous detection process, the oil control effect of the sample can be comprehensively and rapidly represented, and multiple action mechanisms such as physical adsorption and biochemical adjustment can be accurately distinguished.

The invention discloses a Dewar flask upper end face sealing structure for a physical adsorption instrument, which comprises triangular cake structures capable of being spliced into a cylinder, each triangular cake structure is provided with an upper functional layer, a middle functional layer and a lower functional layer, the upper functional layer is a weight applying layer, the middle functional layer is an anti-leakage layer, the lower functional layer is a porous fixed supporting layer, and the sections of triangular cakes are the same. And two radiuses corresponding to the central angles of the fan-shaped structures of the upper functional layer, the middle functional layer and the lower functional layer are respectively provided with an inward semicircular gap. The blocking structure between the Dewar flask and the sample tube for the physical adsorption instrument is simple in structure, during working, low-temperature nitrogen volatilized and released from the Dewar flask condenses gas water in air in gaps into ice, the gaps are automatically filled with the ice, the periphery of the outer side of the sample tube can be blocked, loss of liquid nitrogen in a liquid nitrogen container is effectively reduced, and the service life of the sample tube is prolonged. The sustainable testing time after one-time liquid nitrogen adding is prolonged, and the testing effect is guaranteed.

The invention discloses a crystallization device, a brine lithium extraction system and a process thereof, and relates to the technical field of lithium ion recovery, the crystallization device comprises a crystallizer body, a stirring mechanism and a first vibration element, the crystallizer body is internally used for accommodating slurry, a feeding part on the crystallizer body is used for introducing a sodium carbonate solution and brine, and a discharging part on the crystallizer body is used for discharging lithium carbonate crystal slurry; the stirring mechanism is used for stirring slurry in the crystallizer body; the first vibration element is arranged on the side wall of the crystallizer body and can apply mechanical vibration to the crystallizer body, on one hand, strong fluid disturbance can be generated in mixed feed liquid of brine and a sodium carbonate solution, and mixing and mass transfer between the brine and the sodium carbonate solution are enhanced; on the other hand, the concentration gradient between solid-liquid phases and the concentration gradient inside feed liquid can be destroyed, local supersaturation areas are avoided, the uniformity of crystal nucleation growth is improved, on the other hand, the physical adsorption force and chemical bonding between crystal nuclei and the inner wall of the crystallizer body can be destroyed, and the nucleation growth efficiency of crystals is improved.

The present application belongs to the technical field of injection molding, and relates to a method for improving the injection molding demolding of an LED support, comprising the following steps: providing an injection molding mold for forming the LED support; performing texture processing on the inner surface of the cavity of the injection molding mold, and then performing polishing processing; preparing a fluorine compound coating on the inner surface of the cavity after the polishing processing; and performing injection molding demolding of the LED support. The present application constructs micro concaves through texture processing, reduces the actual contact area of the product and the mold, and reduces physical adsorption. After the polishing processing, the texture defects are eliminated, the edges of the concaves are smoothed, the surface finish is improved, and adhesion deformation caused by local stress is avoided. Finally, a fluorine compound coating is formed on the surface of the cavity, ensuring the consistency and long-term effectiveness of the demolding effect, and avoiding the electrostatic adsorption of dust during the forming of the LED support, which does not affect the electrical performance of the support. The synergistic strategy is conducive to improving the demolding effect of the LED support.

The application discloses a preparation method of all-weather bimetallic porphyrin CMP material, and specifically comprises the following steps: performing polycondensation reaction on M1-TCPP-COCl and 5,5'-diamino-2,2'-bipyridine in an organic solvent, performing suction filtration, washing and drying on a product to obtain M1Por-CMP; and performing coordination reaction on M1Por-CMP and metal M2 in acetonitrile, and performing suction filtration, washing and drying on a product, and the preparation method is completed. The M1Por-M2Bpy-CMP prepared by the application has rich pore structure and conjugate structure, can realize massive adsorption of pollutants through π-π interaction and physical adsorption. Meanwhile, the coordination bimetal in the CMP material can also increase the adsorption of pollutants through electrostatic interaction. The synergistic effect of the above various adsorptions can realize mass transfer strengthening before degradation.

The invention relates to the technical field of preparation of special paper in the papermaking industry, in particular to composite formaldehyde removal paper and a preparation method thereof. The composite formaldehyde removal paper is of a three-layer structure, the middle layer is a paper base, the upper layer is a porous MOF catalytic formaldehyde removal agent coating, the lower layer is a reaction type formaldehyde removal agent coating, and the coatings are attached to the paper base through two-side blade coating. According to the method, the saturation bottleneck of single adsorption is overcome fundamentally, the porous MOF catalytic material and the chemical reaction type formaldehyde removal agent are innovatively combined, and a triple synergistic formaldehyde removal mechanism of physical adsorption, catalytic oxidation and chemical fixation is formed.

The invention relates to the technical field of packaging materials, in particular to an intelligent packaging film based on a multilayer packaging nanocomposite and a preparation method of the intelligent packaging film. On the basis of the anthocyanin CD-MOFs (core) with a physical adsorption function, an ovalbumin-sodium alginate (OVA-SA) nano-composite is innovatively introduced to construct a core-shell structure, and an OVA-SA shell and a CD-MOFs pore channel form a double barrier, so that the stability of the anthocyanin is remarkably improved; the OVA-SA shell is used as an interfacial compatibilizer, and the high chemical affinity of the OVA-SA shell and a corn starch / PVA matrix is utilized, so that nano-scale uniform dispersion of MOF particles in the matrix is realized, and agglomeration is effectively avoided; meanwhile, an active pH response gated release mechanism is formed, high stability is kept in the shelf life, shell response is triggered only when a decay product induces pH rise, anthocyanin is released, color development is carried out, and sensitive monitoring on the freshness of the high-protein food is achieved.

The invention relates to the technical field of hemostatic materials, in particular to composite hemostatic gel as well as a preparation method and application thereof. The composite hemostatic gel is prepared from the following components in percentage by mass: 0.5 to 3 percent of carboxymethyl chitosan, 0.5 to 5 percent of trehalose, 1 to 10 percent of glycerol, 0.1 to 2 percent of carbomer, 0.1 to 2 percent of recombinant blood coagulation factor III, 0.005 to 0.05 percent of benzalkonium chloride and the balance of Tris-HCl buffer solution. Based on the synergistic effect of a natural high polymer material carboxymethyl chitosan and a bioactive component recombinant blood coagulation factor III, the gel constructs a'physical adsorption-blood coagulation activation 'dual hemostasis pathway, realizes a rapid and multi-mechanism hemostasis function, has antibacterial and repair promoting characteristics, can be widely applied to various bleeding scenes such as cutting wounds and surgical wounds, and has wide application prospects. The wound healing is effectively promoted.

This invention discloses a stain-resistant fabric, a stain-resistant high-speed rail seat, and a method for preparing the stain-resistant fabric, relating to the field of high-speed rail seat manufacturing technology. This invention synthesizes a fabric modification system with five synergistic effects: stain resistance, wear resistance, flame retardancy, antistatic properties, and comfort, through grafting of organosilicon prepolymer with a fluorinated hybrid stain-resistant agent and combining it with a weak cationic system. Its core innovation lies in integrating plasma activation with a cationic interface anchoring promoter and natural air-drying chemical anchoring technology, chemically anchoring the functional layer to the fiber surface. This solves the problem of easy detachment due to physical adsorption of traditional functional layers, exhibiting excellent wear resistance and durability. Simultaneously, the component design with consistent ionic properties ensures system compatibility and uniform coating, while the natural air-drying process preserves the fabric's soft feel. Applying this fabric to high-speed rail seats significantly improves stain resistance, ease of cleaning, and long-term durability, which is of significant value in enhancing the quality of high-speed rail interiors.

A precipitate and / or an inclusion in a metal material are extracted by electrolysis using an electrolyte solution. The electrolyte solution contains an adsorbent physically adsorbed and / or chemically adsorbed to any metal other than a matrix metal of the metal material. The extracted precipitate and / or inclusion can be quantitatively analyzed with high accuracy.

The invention relates to the technical field of physical adsorption testing, particularly provides an inflation control method for a physical adsorption instrument, intelligent equipment and a storage medium, and aims at solving the problem that an existing inflation control method is low in testing efficiency. The method comprises the steps that a target pressure point set set by a user is acquired, the target pressure point set comprises a plurality of target pressure values arranged from small to large, and the first target pressure value serves as a current target pressure value; predicting a target inflation pressure value of the outer air chamber according to the adsorption quantity increment, the temperature value of the outer air chamber, the balance pressure value and the balance temperature value of the sample chamber and the current target pressure value; based on the target inflation pressure value, sequentially controlling a first valve and a second valve to inflate gas into the sample chamber through an external gas source and the outer gas chamber, and obtaining a balance pressure value of the outer gas chamber; whether the next target pressure value is selected for inflation control or not is determined according to the balance pressure value of the outer air chamber and the preset standard of the target pressure value, so that the test time is saved, and the test efficiency is improved.

The invention discloses a beta-glucosidase mutant, an immobilized enzyme of the beta-glucosidase mutant and application of the beta-glucosidase mutant in efficient synthesis of kinsenoside, and belongs to the field of enzyme engineering and natural product biosynthesis. According to the mutant, one or more mutations of W177Y, W179F, Q242A, F245G, R298S and R313T are introduced at key sites of an amino acid sequence of wild type beta-glucosidase, so that the yield of catalytic synthesis of kinsenoside is remarkably improved. Furthermore, a metal organic framework material UiO-66-NH2 is adopted as an immobilization carrier, enzyme immobilization is achieved in a physical adsorption mode, and the obtained immobilized enzyme is excellent in reusability. Under the same reaction conditions, the immobilized mutant enzyme is used for catalyzing synthesis of kinsenoside, and the yield of the immobilized mutant enzyme is 3 times that of a wild enzyme. The invention provides an efficient, green and sustainable kinsenoside biocatalytic synthesis scheme, and the kinsenoside biocatalytic synthesis method has a good industrial application prospect.

The invention discloses a TEPA modified bimetallic MOF material for CO2 adsorption and a preparation method of the TEPA modified bimetallic MOF material, and belongs to the technical field of CO2 adsorption. The preparation method comprises the following steps: firstly, by virtue of a solvothermal method, taking zinc nitrate hexahydrate and magnesium nitrate hexahydrate as bimetallic sources, and reacting with an organic ligand 2, 5-dihydroxy terephthalic acid, so as to prepare Zn-Mg bimetallic MOF-74; and then grafting tetraethylenepentamine to the skeleton of the bimetallic MOF-74 in an inert atmosphere by adopting a post-synthesis grafting method. The chemical adsorption site of TEPA is combined with the physical adsorption framework of Zn-Mg bimetal MOF-74, the regulation and control effect of bimetal on the pore structure and rich amino functional groups introduced by TEPA are utilized, the CO2 adsorption capacity, the amine efficiency and the cycle stability are improved, and the preparation method is mild in condition, simple in process, easy to expand and suitable for industrial production. The method has a wide application prospect in the fields of industrial flue gas CO2 capture and the like.

The utility model discloses a phosgenation product byproduct hydrochloric acid filtering device, and aims to solve the problems of high cost, high pollution risk, non-ideal treatment effect and the like in the traditional treatment method. The device comprises a first resin column and a second resin column, a specific resin combination technology is adopted, sulfate radicals, ferric ions and organic pollutants in the byproduct hydrochloric acid are synergistically removed through the physical adsorption effect of resin, and the chromaticity and purity of the hydrochloric acid are remarkably improved. A PLC automatic control system is adopted in the device, starting and stopping of a valve and a pump are automatically adjusted according to the liquid level and hydrochloric acid transparency, and the stability and high efficiency of the purification process are guaranteed. Besides, through COD (Chemical Oxygen Demand) on-line monitoring of backwashing water, environmental protection and high efficiency of the backwashing process are ensured, the backwashing water can be recycled after being treated, and zero discharge of wastewater is realized. The device is simple in structure, convenient to operate and high in energy efficiency, and is an effective solution for treating the byproduct hydrochloric acid in the phosgenation reaction process.

The invention discloses a biological material with an efficient peculiar smell removal function, which is prepared from the following raw material components in parts by mass: 8 to 12 parts of manganese precursor, 0.8 to 1.2 parts of soluble metal salt, 4000 to 5000 parts of dispersing agent and 90 to 100 parts of conditioning agent. The composite nano material which takes small-particle-size thorn convex manganese dioxide as a core and loads metal ions is prepared by simple processes such as mixing, reaction, centrifugation and the like. The material can efficiently remove bad breath through a dual synergistic mechanism; small-particle-size manganese dioxide captures odor-producing bacteria through physical adsorption; meanwhile, released metal ions and hydrogen sulfide are subjected to chemical reaction to generate substances difficult to volatilize. Through the synergistic effect of physical interception and chemical conversion, the dual effects of blocking generation of peculiar smell from the source and immediately eliminating the peculiar smell are achieved. The product disclosed by the invention has biocompatibility and a long-acting peculiar smell removal function, can be widely applied to oral care products such as toothpaste and mouth wash, and provides an innovative solution for solving the problem of bad breath.

The invention provides a solid desulfurizer, a preparation method and application, and belongs to the technical field of desulfurizers. According to the invention, iron ions and manganese ions are taken as bimetallic centers and complexed with benzoic acid series organic ligands, alpha-cyclodextrin is added to construct a binary metal organic framework, and calcination is carried out under a protective atmosphere. The molar ratio of the double metals is (1-15): 1, the molar ratio of the total amount of the double metals to the alpha-cyclodextrin is 1: (0.1-0.5), and the molar ratio of the ligand to the iron ions is (2-4): 1. The desulfurizer realizes deep removal of hydrogen sulfide by virtue of the synergistic effect of physical adsorption, chemical adsorption and catalytic oxidation, the sulfur capacity reaches 5.3-6.9 mmol / g, the desulfurizer can be regenerated after being purged by hot inert gas at 160-200 DEG C, the retention rate of three times of regeneration is 84% or above, and the desulfurizer is suitable for desulfurization of industrial gases such as natural gas and biogas and has the advantages of high efficiency, stability and environmental protection.

The invention relates to a slow-release pesticide preparation containing modified montmorillonite and application of the slow-release pesticide preparation, and belongs to the technical field of pesticide preparations. Nano silicon dioxide and montmorillonite are mixed and calcined to form a rigid porous framework, then a complex generated by ferroferric oxide and chitosan is loaded on the surface of the composite framework through physical adsorption and interface bonding, and the slow-release pesticide preparation containing modified montmorillonite is obtained. The preparation method comprises the following steps: modifying montmorillonite to form modified montmorillonite, carrying out surface functionalization treatment with a silane coupling agent to enable the modified montmorillonite to cooperate with a polylactic acid-glycolic acid copolymer to form a compact shell layer, wrapping a pesticide inside, and carrying out selenylation treatment to form a composite structure of a rigid structure and the shell layer, so that the problem of weak mechanical strength of a traditional sustained release preparation is solved; the rigid framework can resist extrusion of field soil, the compact shell layer and the selenylation layer synergistically resist rain wash, and meanwhile, the layered barrier property of the montmorillonite and the antioxidant property of the selenylation layer form synergistic protection, so that the pesticide preparation still has a good retention rate under long-time ultraviolet irradiation, and the stability of the preparation in a complex field environment is remarkably improved.

This specification describes an acid condensation catalyst that includes: a zeolite having a pore size of 10 tetrahedral atoms, a porosity of ≥ 0.05 mL / g in the range of 20–100 Å, and a silica:alumina ratio (SAR) of 10 to 50; an alumina binder in which the zeolite is dispersed; and at least one metal; wherein the acid condensation catalyst has a porosity of ≥ 0.06 mL / g in the range of 20–100 Å as measured by physisorption using the BJH method. Also described is a method for preparing the catalyst, and a process for carrying out acid condensation on a feed stream comprising one or more oxygenated compounds, carried out in the presence of the catalyst as described.

The invention relates to the field of physical adsorption instruments, particularly provides a temperature control device and a physical adsorption instrument, and aims to solve the problem that the temperature control of a temperature control device in the prior art is not accurate enough. In order to achieve the purpose, the temperature control device comprises a shell and a temperature control assembly, the shell is provided with a containing cavity, and temperature adjusting liquid is arranged in the containing cavity; the temperature control assembly comprises a heat preservation structure and a first heat conduction structure, the heat preservation structure is arranged in the containing cavity, one end of the first heat conduction structure is arranged in the temperature adjusting liquid, the other end of the first heat conduction structure extends into the heat preservation structure, the sample tube is at least partially arranged in the heat preservation structure, and the first heat conduction structure is used for controlling the temperature of the sample tube. The first heat conduction structure transmits the temperature of the temperature adjusting liquid into the heat preservation structure, and therefore the temperature in the heat preservation structure is adjusted. The temperature change in the heat preservation structure is made to be slower through adjustment of the first heat conduction structure, and the temperature in the heat preservation structure can be accurately adjusted.

The application discloses a preparation method of a black phosphorus doped magnesium-based novel hydrogen storage material, and the method comprises the following steps: mixing and ball-milling black phosphorus micro powder and magnesium powder obtained through electrochemical exfoliation under an inert gas atmosphere, and performing ultrasonic crushing to obtain a nano Mg / BP composite material; and performing heat treatment on the nano Mg / BP composite material under an H2 atmosphere to obtain a nano MgH2 / BP hydrogen storage material. The method uses cheap magnesium powder as raw material, embeds the magnesium powder between expanded black phosphorus layers by using a simple method combining ball-milling and ultrasonic crushing, uses lone pair electrons of the black phosphorus as anchor points to solve the problem of easy agglomeration of magnesium powder nanoparticles, simultaneously uses a large specific surface area of the black phosphorus and strong physical adsorption characteristics of the black phosphorus on hydrogen to expand the capacity of the hydrogen storage material, and finally uses the attraction ability of the lone pair electrons of the black phosphorus on high-valence magnesium in magnesium hydride to weaken Mg-H bonds and effectively reduce the dehydrogenation temperature. The preparation method has the advantages of low cost, short cycle, strong repeatability and wide application prospect in the field of hydrogen energy.

This invention discloses a method for preparing a graphene-based deodorizing spunlace nonwoven fabric, belonging to the field of spunlace nonwoven fabric technology. The method includes: S1, mixing and dispersing water, a dispersing agent, and a graphene derivative under heating conditions to obtain a graphene dispersion; S2, adding a humectant, vitamins, and an antibacterial agent to the dispersion, heating and stirring to dissolve, cooling, adding plant-based deodorizing essential oils and functional additives, stirring and filtering to obtain a functional liquid; S3, applying the functional liquid to a spunlace nonwoven fabric substrate using an impregnation or spraying process, and drying at low temperature to obtain the final product. In this invention, the graphene derivative is selected from graphene oxide, reduced graphene oxide, or graphene quantum dots, and the functional additive is selected from sodium pyrrolidone carboxylate, undecylenoyl phenylalanine, or sodium hyaluronate. The resulting nonwoven fabric has a dual deodorizing mechanism combining physical adsorption and chemical decomposition, possessing broad-spectrum antibacterial and skin-moisturizing effects, and exhibits strong process compatibility, making it suitable for large-scale production.