26results about How to "Good chemistry" patented technology

The invention provides a precipitation method of a heavy metal solution. Cations in the heavy metal solution comprise nickel ions, cobalt ions, copper ions, zinc ions and manganese ions, and the precipitation method comprises the following steps: step S100, carrying out a manganese conversion reaction on an alkaline substance by adopting a solution containing manganese ions to obtain a converted manganese precipitate; s200, a stabilizing agent is adopted for carrying out a stabilizing reaction on the converted manganese precipitate, and a stable manganese precipitate is obtained; step S300, adding the stable manganese precipitate into a heavy metal solution for precipitation reaction to obtain precipitate slurry; step S400, continuously carrying out solid-liquid separation on the precipitate slurry to obtain a heavy metal precipitate and a manganese-containing solution; and S500, raw materials including the manganese-containing solution, an oxidizing agent and alkali liquor are subjected to an oxidation precipitation reaction, and a post-precipitation solution and a manganese product are obtained. The method solves the problems of poor sedimentation and filtration performance of a precipitation product, high moisture content of the precipitation product and low precipitation efficiency when heavy metals are precipitated in the heavy metal solution.

The invention discloses a vanadium-based neutron transparent alloy material and a preparation method thereof, the alloy is a disordered solid solution of a body-centered cubic structure formed by a single crystal phase, the chemical composition is V < 1-x > Mx, x is less than 0.1, V is a metal element vanadium, and M is selected from one or more of Al, Nb, Ta, Fe, Sn or Mo. According to the alloy, neutron diffraction peaks generated by metal vanadium can be effectively eliminated while a metal vanadium body-centered cubic crystal structure is not damaged, the neutron transparent alloy material is successfully prepared, the process is simple and feasible, the formula has diversified choices, multiple novel double-element vanadium-based neutron transparent alloys are prepared, and the neutron transparent alloy material has good application prospects. In addition, the multi-element vanadium-based transparent neutron alloy is prepared for the first time, all the materials have excellent chemical and mechanical properties, and compared with an existing Ti2.08Zr alloy, the multi-element vanadium-based transparent neutron alloy has better high-temperature chemical stability.

The invention relates to the technical field of industrial pumps, and discloses an industrial pump body protection device and a using method thereof.The industrial pump body protection device comprises a first protection shell and a second protection shell, a pump body and a driving motor are arranged on the inner side of the first protection shell and the inner side of the second protection shell correspondingly, and an oil injection opening is formed in the position, connected with a rotating shaft, of the pump body and the driving motor; an oil injection assembly, a fixing assembly and a water cooling assembly are arranged between the first protection shell and the second protection shell. According to the oil filling device, the oil filling assembly is arranged, specifically, oil is filled into the oil storage barrel through the oil filling port, then the electric telescopic rod drives the plunger to push the oil in the oil storage barrel, then the oil is shunted into the second oil filling pipes through the first oil filling pipe and the one-inlet multi-outlet electromagnetic valve, oil is injected into the oil filling port, and oil is supplemented to the rotating shaft supporting bearing; therefore, the rotating shaft supporting bearing can be maintained without dismounting the protective shell, and the use is convenient.

The invention relates to a safe and environment-friendly rough-surface core winding pipe and a processing technology thereof. The safe and environment-friendly rough-surface core winding pipe comprises the following components in parts by mass: 160-200 parts of polyvinyl chloride, 90-100 parts of epoxy resin, 40-60 parts of chloroprene rubber, 30-40 parts of a chopped fiber compound, 10-16 parts of a dispersing agent and 8-12 parts of a toughening agent. The chopped fiber compound comprises a modified aramid fiber and carbon nanotube composite material. The method has the effects of improving the green and environment-friendly performance of the product and improving the mechanical strength of the product.

The invention provides a composite solid electrolyte and preparation and application thereof, and belongs to the technical field of lithium ion batteries. Melamine sponge is used as a support, a porous LATP ceramic chip is prepared through an ice template method, and then porous ceramic is filled with a polyion liquid solution through a titration permeation method to form the composite solid electrolyte. The porous LATP ceramic chip is internally provided with continuously arranged micropore channels, the micropore channels serving as a rigid framework can inhibit growth of lithium dendrites, a polymer and LATP are compounded to form a continuous channel network, and rapid transmission of lithium ions is facilitated; the obtained composite solid electrolyte has relatively high ionic conductivity (0.81 * 10 <-3 > S cm <-1 >) and obviously improved lithium ion transference number (tLi < + > = 0.79), and a solid-state lithium metal LiLi symmetric battery assembled on the basis of the composite solid electrolyte has excellent electrochemical performance and good cycling stability, and can stably circulate for more than 100 circles at the discharge specific capacity of 110 mAh g <-1 > under the current density of 0.2 C.

The invention provides a modified epoxy-cerium oxide polishing liquid and a preparation method thereof, which is mainly prepared from the following raw materials by mass percentage: 0.2%-0.5% of modified cerium oxide abrasive; 0.02%-0.35% of stabilizer; 0.25%-0.4% of ammonia water; 99.08%-99.2% of deionized water; wherein the modified cerium oxide abrasive is cerium oxide and epoxy carboxylic acid mixed in a mass ratio of (20:1)-(200:1). The epoxy-cerium oxide polishing liquid can make the abrasive more evenly dispersed in the solution, improve the uniformity of the suspension; and maintain its suspension (D50) for up to 2 months under the condition of ensuring the removal rate.

The present invention relates to the technical field of security features comprising markers by means of surface enhanced Raman spectroscopy (SERS) and the detection thereof. Furthermore, the present invention relates to the field of UV-Vis curable security inks comprising SERS tags, said inks being used for printing security features on substrates, in particular security documents or articles, wherein the ink comprises i) one or more surface enhanced Raman spectroscopy (SERS) tags, ii) one or more vinyl ether-containing compounds, iii) one or more cationic radiation-curable compounds different from the one or more vinyl ether-containing compounds of ii), and iv) one or more cationic photoinitiators that are hexafluorophosphates.

The invention discloses a polyurethane resin modified acetic acid-propionic acid emulsion as well as a preparation method and application thereof, and belongs to the technical field of emulsions for glass fibers. The emulsion is prepared from the following raw materials in parts by weight: 200 to 300 parts of butyl acrylate, l70 to 210 parts of vinyl acetate, 10 to 15 parts of methacrylic acid, 8 to 15 parts of dimethyl ester, 5 to 10 parts of polyurethane resin, 5.0 to 6.0 parts of nonionic emulsifier, 4.0 to 5.0 parts of anionic emulsifier, 0.5 to 1.5 parts of initiator, 0.4 to 0.9 part of sodium bicarbonate and 350 to 400 parts of water. The preparation method comprises the following steps: (1) weighing the raw materials; (2) heating, stirring and dispersing the nonionic emulsifier, the anionic emulsifier and part of water to obtain a pre-emulsion; and (3) firstly stirring butyl acrylate, vinyl acetate, methacrylic acid, dimethyl ester and polyurethane resin, then adding the rest water and sodium bicarbonate, continuously stirring, heating, adding an initiator for reaction, finally dropwise adding the pre-emulsion, keeping the temperature and cooling to obtain the water-based adhesive. And polyurethane is used for modification, so that the water resistance and the heat resistance of the modified glass fiber are improved, and the modified glass fiber has excellent performance when being used on the glass fiber.

The invention discloses a high-performance composite capacitor base film and a preparation method thereof, the method comprising the following steps: step 1, mixing polyester masterbatch and composite reinforced modified particles to obtain an extrusion masterbatch; step 2, melt extrusion, cooling, and casting; step 3, preheating the cast sheet and performing longitudinal stretching; step 4, preheating, performing transverse stretching; step 5, shaping treatment, and finally cooling, winding, and trimming to obtain a high-performance composite capacitor base film. The invention adopts PEN and PET compound as polyester masterbatch, which can improve the mechanical strength and heat resistance of the base film. The composite reinforced modified particles in the invention adopt acid-modified carbon nanotubes and nano-SiO2 as the main reinforcing fillers, and compound nano-alumina and reduced carbon dots to form a special three-dimensional network structure, which can comprehensively improve the mechanical strength, heat resistance and oxidation resistance of the base film, improve the application effect of the base film, and extend its service life.

The present invention relates to a polymethoxy-substituted Aza-BODIPY compound and the application of the Aza-BODIPY compound as an ACQ probe in fluorescence tracing of nanoparticles in vivo, wherein the Aza-BODIPY probe has the following characteristics: 1) Aza-BODIPY has a methoxy group in the para position of the benzene rings at positions 1, 3, 5, and 7, forming a six-membered ring structure on one side; 2) stable fluorescence is emitted when encapsulated in the hydrophobic core of a nanocarrier; 3) after the nanocarrier is degraded or depolymerized, the probe is released, aggregates when encountering water, and the fluorescence is rapidly and completely quenched; 4) there is no obvious fluorescence recurrence, which can reduce the interference of flat fluorescence recurrence. The "ON→OFF" fluorescence switching mode can effectively eliminate the interference of free probe signals, making real-time monitoring of nanocarrier particles in vivo and in vitro more accurate. The method of the present invention can currently be applied to nanocarriers with a highly hydrophobic matrix (lipid or polyester nanoparticles) or a hydrophobic core-hydrophilic shell structure (micelles).

The invention relates to the field of all-solid-state electrolyte, in particular to a flame-retardant polymer electrolyte membrane of a solid-state lithium battery and a preparation method of the flame-retardant polymer electrolyte membrane. The polymer electrolyte membrane mainly comprises the following components: polyethylene oxide (PEO), lithium salt, a flame retardant, a plasticizer, a photoinitiator and the like. Through a solvent-free hot-pressing ultraviolet curing method, PEO is subjected to a cross-linking reaction, the crystallinity of the PEO is greatly reduced at room temperature, the mechanical performance of the polymer electrolyte is improved, the prepared polymer electrolyte membrane is non-combustible, the flame retardant can generate a more stable SEI layer in the battery circulation process, formation of lithium dendrites is inhibited, the electrochemical window of the polymer electrolyte membrane is widened, and the service life of the polymer electrolyte membrane is prolonged. And the lithium metal battery can be stably circulated for more than 200 circles at the multiplying power of 0.5 C, the capacity retention ratio reaches 95.9%, and the cycle performance and the safety of the lithium metal battery are remarkably improved. The preparation method is simple in process flow, wide in application range and low in cost, and has a great application prospect.

The present invention belongs to the technical field of gallium oxide film preparation, and discloses a method for preparing a gallium oxide heteroepitaxial film, comprising: preparing ammonium gallium sulfate hydrate in a molten state; preparing a precursor solution using the ammonium gallium sulfate hydrate in a molten state; and annealing in a vacuum environment after spin coating the precursor solution onto a sapphire substrate in stages, thereby obtaining a gallium oxide film with a preferred orientation in a preset crystal direction. The present invention uses ammonium gallium sulfate hydrate to prepare the precursor solution, thereby avoiding the influence of the crystal state on the orientation of the subsequent gallium oxide film. Furthermore, the present invention adopts a staged spin coating method, limits the substrate used to a sapphire substrate, and anneals in a vacuum environment after spin coating, thereby obtaining a gallium oxide film with a preferred orientation in a preset crystal direction. The film has excellent chemical / physical properties and thermal stability, and has important application value in solar-blind photoelectric detection and electronic device manufacturing.

The invention belongs to the technical field of proton exchange membranes, and particularly relates to a proton exchange membrane, a proton exchange membrane fuel cell, a method and application. The preparation method of the proton exchange membrane comprises the following steps: dissolving sulfonated polyetheretherketone in dimethyl sulfoxide to prepare a sulfonated polyetheretherketone solution, adding amino acid modified cellulose nanocrystalline powder to obtain a uniform and stable solution, and filtering to obtain a membrane casting solution; and fully mixing the modified cellulose nanocrystal powder with sulfonated polyether ether ketone according to a mass ratio of (0.03-0.12): 1, and obtaining the sulfonated polyether ether ketone / modified cellulose composite proton exchange membrane through a tape casting method. The proton exchange membrane provided by the invention is efficient in proton transfer, and overcomes the defects of high swelling ratio and poorer stability caused by over-high sulfonation degree of sulfonated non-fluorocarbon polymers at the same time.

The invention provides a porous structure silica composite film and a preparation method and application thereof. The preparation method of the silicon-oxygen composite film with the porous structure comprises the following steps: carrying out sputtering treatment on a silicon target material in a mixed atmosphere of inert gas and oxygen, growing a silicon-oxygen composite film on a substrate, and carrying out annealing treatment to obtain a composite film of silicon and silicon oxide, and carrying out etching treatment on the prepared composite film by using a corrosive agent, and then cleaning and drying to obtain the porous structure silica composite film. The silicon-oxygen composite film prepared by the invention has large specific surface area, high energy storage density and relatively high conductivity, can absorb volume expansion generated during charging and discharging of the silicon-oxygen composite film, reduces stress of periodic volume change, keeps structural stability in a lithium ion intercalation / deintercalation process, keeps high reversible capacity and is high in specific capacity. In addition, the preparation method is simple in process, low in equipment dependence degree and suitable for industrial production.

The invention relates to a method (100) for producing a shaped thermoplastic composite material (10), said method comprising a pultrusion process and comprising:-a feeding step (110) providing fibres (12) in a direction A of the pultrusion path,-a step (120) of wetting the fibres (12) comprising passing the fibres through a thermoplastic composition (14),-a heating step (130) for heating the fibres (12) in the direction A of the pultrusion path, the invention relates to a method for producing a thermoplastic composite material (18) comprising polymerizing (131) a thermoplastic composition (14) impregnated with fibres to form a heated thermoplastic composite material (16) having a first section (S1), a forming step (140) passing through a forming device (17) having a second section (S2) and the second section (S2) being smaller than the first section (S1) to provide a heated thermoplastic composite material (18) having the second section (S2), and a cooling step (150) comprising polymerizing (131) a thermoplastic composition (14) impregnated with fibres to form the heated thermoplastic composite material (16) having the first section (S1). In this way, the shaped thermoplastic composite material (10) is produced.

The invention provides a composite titanium dioxide film as well as a preparation method and application thereof. The preparation method of the composite titanium dioxide film comprises the following steps: performing co-sputtering treatment on a titanium dioxide target material and an energy density contribution main body element target material in an inert atmosphere, and growing the composite titanium dioxide film on a substrate. According to the preparation method of the composite titanium dioxide thin film, a titanium dioxide target material and an energy density contribution main body element target material are directly deposited by adopting a co-sputtering method to form the composite titanium dioxide thin film. The grown composite titanium dioxide film has the characteristic of small interface resistance, irreversible side reaction between electrolyte and an energy density contribution main body can be reduced and prevented, the generation of solid electrolyte membranes (SEI) is reduced, the stress of periodic volume change is reduced, and the structural stability in the lithium ion embedding / removing process is maintained. In addition, the preparation method effectively ensures that the grown composite titanium dioxide thin film is stable in chemical performance.

The invention discloses an electrocatalytic oxidation modification method of an indole skeleton-containing compound, which specifically comprises the following steps: adding tryptophan-containing polypeptide as shown in a formula I or an indole-containing derivative as shown in a formula III into a reaction bottle, adding a metal catalyst, a ligand, an electrolyte and a reaction solvent, introducing oxygen, and reacting at the temperature of 60-80 DEG C to obtain the indole skeleton-containing compound. Carrying out electrooxidation reduction reaction at room temperature under the condition that the electrodes are electrified; after the reaction is finished, carrying out reduced pressure distillation through a rotary evaporator to remove the solvent to obtain a crude product; further performing column chromatography separation on the crude product to obtain a pure product polypeptide compound containing a 3-hydroxy-2-indolone skeleton as shown in a formula II or a small molecule compound containing a 3-hydroxy-2-indolone skeleton as shown in a formula IV; according to the method, green and cheap oxygen is used as an oxygen source, an electrochemical technology which is environmentally friendly and high in atom economy is applied, use of an oxidizing agent and an expensive catalyst is avoided, and the catalytic efficiency is high.

The present invention provides a seedling medium suitable for tomatoes and a preparation method thereof, wherein the raw materials include renewable resources such as tail vegetables, sawdust, tree branches and leaves, cow dung and oyster shells. The steps are as follows: pre-treat some waste raw materials and mix them in a certain number, inoculate a bacterial agent to obtain a fermentation material, adjust the carbon-nitrogen ratio and pH of the fermentation material to suitable values, and then put it into a temperature-controlled molecular membrane aerobic fermentation tank for fermentation, add an appropriate amount of oyster shell particles after the fermentation is completed, and finally inoculate Bacillus to obtain a matrix suitable for tomato seedlings. The preparation method is green, environmentally friendly, low-cost, and highly sustainable. The tail vegetables are used as the main source of organic matter in the seedling medium, and the low-cost and easily accessible oyster shell powder is used as a supplementary source of mineral elements. The oyster shell particles replace vermiculite and perlite to achieve the air permeability and water retention of the matrix, thereby improving the physical and chemical properties of the matrix as a whole, optimizing and improving the seedling effect of the matrix and the fruit quality obtained by planting the seedlings.

The invention relates to the field of optical imaging. More specifically, it relates to fluorescent probes that target carbonic anhydrase 9 (CA-IX) and comprise a near infrared (NIR) cyanine dye. The invention also relates to methods of preparing these compounds, pharmaceutical compositions and kits comprising them and methods of using them as optical diagnostic agents in the imaging or treatment of diseases, such as solid tumors with hypoxic tissues comprising cells expressing CA-IX. The compounds have formula (I). # imgabs0 #

The present invention relates to a kind of ultra-low interfacial tension water-based microsphere adjustment and displacement system, belonging to the field of oil and water well adjustment and displacement, profile control and water plugging. The system includes a first segment plug and a second segment plug, and one or more of core-shell self-intertwining water-based microspheres or pre-crosslinked gel swellable particles are dissolved in oil field reinjection water at a concentration of 3-6wt% to form a first segment plug; a mixture of a surfactant and ultra-low interfacial tension water-based microspheres is dissolved in oil field reinjection water at a concentration of 4-8wt%, forming a second segment plug. The system is used for oil and water well adjustment and displacement process, the first segment plug enters a high permeability layer and a large pore, adjusts the water absorption profile, the second segment plug enters the deep part of the formation, and the water-based microspheres are filled with the formation pores after expansion to form a piston-shaped front, and then the surfactant is released for oil displacement. The present invention has the advantages of simple injection process, strong migration ability, low interfacial tension, etc., by adjusting the component concentration and the segment plug dosage, the injection speed is controlled, the injection well is stabilized and oil and water are controlled, and the recovery rate is greatly improved.

The application belongs to the technical field of new energy materials, and specifically discloses an inorganic halide solid electrolyte, a preparation method thereof and a full solid battery. The application first grinds and mixes LiCl, InCl3 and HfCl4 under a protective atmosphere to obtain a mixture; keeps the protective atmosphere, and sequentially performs ball milling and tablet pressing on the mixture to obtain a precursor tablet; then vacuum seals and sinter the precursor tablet to obtain the inorganic halide solid electrolyte Li 2.7 In 0.7 Hf 0.3 Cl6. The application introduces a higher valence Hf 4+ Into the crystal lattice of Li3InCl6, generates a certain Li + Defect vacancy, and provides more migration paths for Li + Transmission. The introduction of Hf 4+ Greatly improves the ion conductivity of the solid electrolyte, and the electrochemical performance and stability of the assembled full solid battery are also greatly improved.

According to the machining method of the seamless thick-wall conical pipe for the chemical equipment, zirconium alloy raw materials are accurately controlled, the seamless thick-wall conical pipe is manufactured through a series of machining steps such as vacuum melting, cogging, saw cutting, blank manufacturing and rolling on the basis of the zirconium alloy raw materials, multiple heat treatment processes are executed in the machining process, the mechanical internal stress of products is effectively reduced, and the product quality is improved. Particularly, the design of a reaming die mandrel and a driving rotating shaft is adopted after forging in the machining process, so that the large head and the small head of the conical workpiece rotate at the same angle and speed in the reaming process, and finally better roundness and uniform wall thickness are obtained; and a product with a uniform structure is obtained.

The utility model relates to a high-temperature purification furnace which comprises a furnace body and a fixed table fixed with the furnace body, a heating and heat preservation assembly is arranged in the furnace body, and the heating and heat preservation assembly is connected with the furnace body in a lifting mode through a heating lifting assembly. The heating and heat preservation assembly comprises a heat insulation cage, a plurality of graphite heaters and a heat preservation layer, the graphite heaters and the heat preservation layer are arranged in the heat insulation cage, the graphite heaters are arranged along the circumference, and the heat preservation layer is arranged between the graphite heaters and the inner wall of the heat insulation cage. The heating and heat preservation assembly adopts an isostatic pressing graphite plate type heater, can bear large-current electricity conduction, is good in temperature uniformity, and can be stably used for a long time under the ultra-high temperature condition; the heat preservation layer is made of viscose-based graphite soft felt, and the viscose-based graphite soft felt has the unique air laying technology, has a fiber network structure with high uniformity and ideal chemical performance and good felt body tensile strength, and meanwhile is low in heat conductivity and beneficial to heat preservation. The device has the characteristics of simple structure, convenience in operation and capability of greatly reducing the pollution to the environment.

The application discloses a kind of preparation process of fireproof composite board with metal core material, belong to composite board technical field, the present application includes the following steps: metal substrate is obtained by coating modified polyurethane adhesive, paving organic-inorganic composite flame-retardant material, to obtain composite board material, composite board material is formed by hydraulic pressure, to obtain fireproof composite board with metal core material;The present application is to sodium dodecyl benzene sulfonate modified corn starch, improve the dispersibility of adhesive, and design the modified adhesive of multiple epoxy groups to improve the bonding strength of preparation adhesive, vinyltriethoxysilane is modified with methacrylic acid dodecafluoroheptyl ester, improve the fireproof performance of coupling agent in flame-retardant material, so that the prepared composite board material has the characteristics of adhesive viscosity uniform, large bonding strength, and the excellent fire resistance of composite board material.

The present disclosure provides a polymer electrolyte membrane with improved chemical or mechanical durability. The present disclosure relates to a polymer electrolyte membrane, wherein the polymer electrolyte membrane comprises a porous support and a composite layer comprising a first ionomer filled in the porous support, wherein the polymer electrolyte membrane comprises a first segment with a first durability and a second segment with a second durability, and the first durability is higher than the second durability.

This invention relates to the field of concrete reinforcing fiber technology, and particularly to a bamboo powder-reinforced polypropylene composite fiber for concrete crack resistance and its preparation method. Through an integrated process of surface chemical modification (introducing bifunctional groups), melt grafting (forming chemical anchoring), and multi-stage stretching (forming a rough structure in situ), the strong interfacial bond between bamboo powder and polypropylene and the simultaneous construction of fiber surface functions are fundamentally achieved. This method not only solves the global problem of bamboo powder easily detaching from the polymer matrix, but also ensures good rheological properties of the melt due to the minimal damage to the polypropylene backbone caused by chemical grafting. This makes it possible to subsequently prepare fine denier fibers (with diameters as low as 30 μm) through high-ratio multi-stage stretching, overcoming the technical bottleneck of traditional modification methods that struggle to balance strong interfacial bonding and high spinnability.