84results about How to "Content adjustable" patented technology

The invention relates to a nano silicon-carbon composite negative material for lithium ion batteries and a preparation method thereof. A porous electrode composed of silica and carbon is taken as a raw material, and a nano silicon-carbon composite material of carbon-loaded nano silicon is formed by a molten salt electrolysis method in a manner of silica in-situ electrochemical reduction. Silicon and carbon of the material are connected by nano silicon carbide, and are metallurgical-grade combination, so that the electrochemical cycle stability of the nano silicon-carbon composite material is improved. The preparation method of the nano silicon-carbon composite material provided by the invention comprises the following steps: compounding a porous block composed of carbon and silica powder with a conductive cathode collector as a cathode; using graphite or an inert anode as an anode, and putting the cathode and anode into CaCl₂ electrolyte or mixed salt melt electrolyte containing CaCl₂ to form an electrolytic cell; applying voltage between the cathode and the anode; controlling the electrolytic voltage, the electrolytic current density and the electrolytic quantity, so that silica in the porous block is deoxidized into nano silicon by electrolytic reduction, and the nano silicon-carbon composite material for lithium ion batteries is prepared at the cathode.

A touch screen control method for controlling a playback of multimedia content using a timeline-based interface includes detecting a selection at a specific location on the timeline; and selectively zoom-displaying an area around the location where the selection is detected the position on the timeline where the event trigger has occurred.

The invention relates to a preparation method of a lightweight graphite-based nano-magnetic metal composite material used for electromagnetic shielding, which belongs to the related field of electromagnetic shielding materials; the precursor solution of expanded graphite and magnetic metal is mixed and stirred evenly, and dried after evaporating the solvent. The obtained mixture is treated in a reducing atmosphere at 300°C-1000°C, passivated with ordinary nitrogen and cooled to room temperature to obtain a composite material of expanded graphite and magnetic nanometer metal, and the relative content of the two can be adjusted. The composite material is light in texture, has excellent electromagnetic properties, and can be pressed into various shapes required. The material has excellent electromagnetic shielding performance in the range of 300kHz-1.5GHz, reaching 70-105dB, and the addition of magnetic metal improves the electromagnetic shielding performance of the expanded graphite in the low-frequency band. The method is simple and efficient, suitable for mass preparation, and the obtained product is expected to be applied in aerospace, military, electronic and electrical products.

The invention discloses a controllable synthesis method of a monoatomic catalyst with low cost and high loading capacity, the monoatomic catalyst prepared by a method takes graphite-phase carbon nitride as a substrate, has the characteristics of low cost, high metal element loading capacity, controllable content and adjustable variety, and meanwhile, the method can be used for preparing the single-metal single-atom catalyst and a multi-metal single-atom catalyst, the single-atom catalyst has excellent catalytic activity and stability, and by taking the silver single-atom catalyst as an example, the visible light hydrogen production rate of the silver single-atom catalyst is 6.2 times that of silver nanoparticle-loaded graphite-phase carbon nitride, and after 60-hour continuous photocatalytic hydrogen production test, the hydrogen production rate is almost unchanged.

The invention provides a preparation method of continuous cellulose-carbon nanomaterial composite aerogel fibers. The method comprises steps as follows: a cellulose dispersion liquid is prepared to serve as a spinning solution, and a carbon nanomaterial is added; an acidic solution, an ethanol solution or an acetone solution is added to a coagulating basin to serve as a coagulating bath; the spinning solution with the carbon nanomaterial added is added to the coagulating bath for wet spinning, and cellulose gel fibers containing the carbon nanomaterial is obtained; the cellulose gel fibers containing the carbon nanomaterial are wound, immersed in an ageing solution to be aged at the normal temperature for 15 min-1 h, washed with deionized water to be neutral, then subjected to solvent replacement with deionized water, ethanol or tertiary butanol and dried, and the continuous cellulose-carbon nanomaterial composite aerogel fibers are obtained. According to the preparation method, the preparation process is simple, the spinnability is good, environmental protection and no pollution are realized, and the prepared continuous cellulose-carbon nanomaterial composite aerogel fibers have good flexibility, rich pores and a large specific surface area.

The invention provides a high-pressure grouting leaking stoppage method for a settlement joint of a building. According to the high-pressure grouting leaking stoppage method for the settlement joint of the building, high complementary between polyurethane modified epoxy resin grouting fluid and acrylamide grouting fluid on core properties is utilized, outer side protection is formed by making use of the polyurethane modified epoxy resin grouting fluid, inner side expansion filler is formed by making use of the acrylamide grouting fluid based on the outer side protection, so that advantages are used to complement to each other, strengths are combined together, advantages are enhanced and disadvantages are avoided, rapid grouting leaking stoppage of the settlement joint of the building is achieved, the leaking stoppage quality is improved, the endurance of leaking stoppage is improved without damaging the original structure and functions of the building, and requirements for development of buildings in the present stage are satisfied.

The invention discloses an exotic atom-doped carbon material and a preparation method and an application thereof. The doped carbon material prepared according to the method is a honeycomb three-dimensional multi-level porous structure material, wherein macropores are constructed by mutually cross-linked flakes, the flakes are stacked by nanoparticles, and random mesopores and micropores are distributed between the nanoparticles. The preparation method comprises the steps of firstly dissolving polyacrylonitrile into an N, N-dimethylformamide solution, then adding one or more reagents containingtarget doping atoms into the solution, conducting a solvothermal reaction to obtain a precursor, placing the precursor in a protective atmosphere for calcination so as to obtain a single or multi-atom doped carbon material with uniform nanometer size and excellent electrochemical performance. Sodium-ion batteries show high specific capacity, excellent rate performance and ultra-long cycle stability when the exotic atom-doped carbon material is used as a negative electrode material of the sodium-ion batteries.

A video image processing method, an apparatus, and a terminal are provided. The method includes: displaying a captured video image on a screen; detecting operating points of a user on the screen, and converting screen coordinates of the operating points into target canvas coordinates in a target canvas; mapping the screen coordinates of the operating points to a virtual canvas, to obtain virtual canvas coordinates of the operating points; mapping the virtual canvas coordinates of the operating points to the target canvas, to obtain target canvas coordinates of the operating points in the target canvas; drawing a graphic image on the target canvas according to the target canvas coordinates of the operating points; and overlaying the target canvas onto the video image.

The invention relates to a production method for vanadium-nitrogen alloy, which comprises following steps: evenly mixing oxide of powder vanadium or ammonium metavanadate, carbon powder and binder, continuously adding into an external-heating rotary kiln in nitrogen atmosphere after briquetting and forming, and presintering to below 1000 DEG C under the protection of nitrogen; collecting the presintered block product which is cooled to ambient temperature under the protection of nitrogen at a discharge opening, pushing into an improved soft magnetic nitrogen atmosphere furnace kiln, heating to 1000 to 1500 DEG C for carbonization and nitridation reaction, and vanadium-nitrogen alloy product is obtained after discharge. The composition of the vanadium-nitrogen alloy: V is 78 to 83%, N is 16 to 21%, C is 6% max, and silicon, phosphorus and aluminum are less than 0.10%; the apparent density is greater than 3.5g/cm<3>. The production method for vanadium-nitrogen alloy has the advantages of adopting rotary kiln for precalcination, removing harmful impurities and corrosive elements, reducing stacking volume, greatly improving productivity of carbonization and nitridation working procedures, and greatly prolonging service life of nitriding furnace kiln.

In the invention, a carbon nanotube-titanium dioxide composite membrane/fiber is prepared in one step by a chemical gas phase method, and the assembly of the carbon nanotube and the nucleation and growth of titanium dioxide are finished at the same time to grow a uniform and continuous carbon nanotube-titanium dioxide composite membrane/fiber. The preparation process is simple, the parameter controllability is strong, and the yield is relatively high; the prepared carbon nanotube-titanium dioxide composite membrane/fiber is uniform and continuous in preparation and realizes self-support and adjustable TiO2 content; with a network structure, the carbon nanotube-titanium dioxide composite membrane/fiber has remarkably strong electrical conductivity and excellent electrochemical properties and does not need the treatment of adding a conductive agent, a binder and the like; after simple cutting, the carbon nanotube-titanium dioxide composite membrane/fiber can be directly applied to a lithium battery cathode material and a super capacitor material.

The invention discloses a method for preparing a mineral potash fertilizer with potassium feldspar, wherein the method uses potassium feldspar as raw material and phosphates ore as assistant, and comprises crushing, mixing, mechanical force chemical reaction, neutralizing, separating and drying, wherein the mixing is to mix the potassium feldspar powder and phosphates ore, which have a fineness of 100-400 meshes, based on a mass ratio of 1: 0.5-2.5, and add inorganic acid with a mass percentage concentration of 25-60%, and perform the mechanical force chemical reaction for 2-5 h, wherein the liquid to solid ratio of the inorganic acid to the ore powder is 1-5 ml/g (ore powder); the inorganic acid is chosen from phosphoric acid, hydrochloric acid or nitric acid. The method transforms the phosphorus and potassium in the raw material into effective phosphorus and potassium (comprising quick-acting phosphorus and potassium, and long-acting phosphorus and potassium), which can be absorbed by the crops. The quick-acting phosphorus and potassium in the product take up 20-90% of the effective phosphorus and potassium and can be adjusted, wherein the rest is long-acting phosphorus and potassium. The total use ratio of the phosphorus and potassium in the raw material is over 80%.

An electronic timepiece has a GPS receiver, outdoor detection device, timekeeping device, control device, and storage device. The control device has an automatic reception control unit that starts reception control when the time kept by the timekeeping device reaches the reception control start time stored in the storage device, and stops reception control until the next reception control start time when a stop reception control condition is met; and a time correction unit that corrects the time kept by the timekeeping device based on time information contained in the satellite signal when satellite signal reception is successful. The automatic reception control unit includes an outdoor reception control unit that executes an outdoor reception process when the outdoor detection device detects being outdoors, and a scheduled reception control unit that executes a scheduled reception process when the time kept by the timekeeping device goes to the scheduled reception time.

The invention discloses a core-shell nano-composite material and its preparation method. The composite material is formed by compounding ammonium perchlorate (AP) and a nano-metal oxide which accounts for 0.1-10% by mass. The preparation comprises: (1) dissolving a metal salt in ethyl acetate, and conducting ultrasonic oscillation to make it fully dissolved so as to obtain a metal salt solution, in which the molar concentration of the metal salt is 0.0004-0.04mol/L; (2) adding ammonium perchlorate into the metal salt solution in an undissolved state, and carrying out stirring at room temperature so as to make the ammonium perchlorate dispersed uniformly; (3) using an alkaline solution with an OH<-> ion concentration of 0.1-1mol/L for titration at a constant speed so as to make the metal ions in the metal salt converted to a precipitate completely; and (4) filtering the obtained precipitate and conducting washing, and drying the obtained powder, thus obtaining the core-shell nano-composite material. The metal salt can be ZnCl2, FeCl3, Co(NO3)2.6H2O or CuCl2. In the invention, the dispersion problem of a nano-oxide catalyst in AP is solved; an oxide catalyst is generated on AP in situ, and the oxide content is adjustable; the nano-composite material of the invention has self-catalysis property, and the catalysis effect is substantial.

The invention discloses alumino silica gel and belongs to the technical field of alumino silica gel. In the alumino silica gel, mass content of Al2O3 is 3-8%, and mass content of SiO2 is not lower than 82%; specific surface area of the alumino silica gel is 300-550m2/g, pore volume is 0.6-1.0mL/g, and compressive strength is not lower than 50N. The invention further discloses a preparation methodof the alumino silica gel. The preparation method includes: subjecting sodium silicate, aluminum salt and raw material acid to sol-gel process, aging, exchange acid treatment, water washing, ammoniumtreatment and drying to obtain the alumino silica gel. The alumino silica gel is wide in silicon-aluminum ratio adjusting range, large in pore volume and specific surface area, high in compressive strength, uniform in framework structure and strength and stable in quality; the preparation method is simple in process and convenient in operation and can be widely used in the field of catalyst and catalyst carriers, adsorption and separation and molecular sieve preparation.

The invention provides a preparation method of a catalytic material of nitrogen-doped mesoporous carbon-silicon dioxide-based strongly-acidic multi-phase ion liquid. The preparation method comprises the steps of taking P123 or F127 as a template agent, cyanamide as a carbon source and tetraethoxysilane as an inorganic source, and obtaining a primary product by volatilized self assembly under the condition of acidic room temperature and heat treatment; then under the protective condition of inert gases, baking at the high temperature to obtain a nanocomposite with open hole channels; and then carrying out quaternized reaction, and obtaining the catalytic material of the nitrogen-doped mesoporous carbon-silicon dioxide-based strongly-acidic multi-phase ion liquid by further acid exchange. The preparation method provided by the invention has the advantages that tested by catalytic reaction, the catalytic activity in reaction for preparing biodiesel by catalyzing biomass to carry out conversion-ester exchange is very excellent, and the regenerating capability of the catalyst is strong, so that the preparation method has certain industrial significance for improving the preparation efficiency of the biological material on large scale.

The invention discloses a building demolition method using a self-expansion effect of an expansion agent. The building demolition method using the self-expansion effect of the expansion agent comprises the following steps that step 1, the number of falling layers, destruction layers and destroying layers of a building to be demolished is calculated; step 2, stand columns of the destruction layersare marked; step 3, pouring holes are formed; step 4, oil storage holes are formed; step 5, expansion agent mixtures are prepared; step 6, the expansion agent mixtures are poured; step 7, openings ofthe pouring holes are closed by sealing devices; and step 8, burning devices are arranged to burn the stand columns, the stand columns are completely destroyed, and the demolition of the building is realized. According to the building demolition method using the self-expansion effect of the expansion agent, the problems of long demolition cycle, high demolition cost and high danger can be solved,and the momentum generated by the self-weight falling from the upper part of the building is used for destroying the entire building, the demolition of the building is realized in safety and controllability modes, the demolition cycle is short, the operation is simple, the demolition cost is low, and the safety and reliability are achieved.

Provided is a film-like epoxy resin composition including an epoxy resin (A); a curing agent (B); a cure accelerator (C); an inorganic filler (D); and an organic solvent (E) and satisfying all the following requirements (1) to (4): (1) at least one of the epoxy resin (A) and the curing agent (B) contains a component being a liquid at 25° C. in an amount of 30% by mass or more based on the total mass of the epoxy resin (A) and the curing agent (B); (2) the content of a volatile portion that volatilizes by being heated at 180° C. for 10 minutes is 0.2% to 1.5% by mass based on the total amount of the epoxy resin composition; (3) the minimum melt viscosity in temperature rising from 40° C. to 200° C. is 800 Pa·s or less; and (4) the film thickness is 50 to 500 nm.

The invention relates to a high CIS-1,4 conjugated diene polymer with double bonds on a side arm and a preparation method thereof as well as a high CIS-1,4 conjugated diene polymer with functional groups on a side arm and a preparation method thereof, belongs to the field of conjugated diene polymers and solves the technical problem in the prior art that a high-stereo-tacticity conjugated diene polymer containing polar functional groups cannot be obtained. The invention first provides the high CIS-1,4 conjugated diene polymer with the double bonds on the side arm and the preparation method thereof, and based on the polymer, a functional high CIS-1,4 conjugated diene polymer is synthesized. The high CIS-1,4 conjugated diene polymer with the double bonds on the side arm is prepared by homopolymerization of a conjugated diene monomer with double bonds on the side arm or copolymerization of the conjugated diene monomer with the double bonds on the side arm and non-functional conjugated diene under catalytic action of a catalytic system formed by a tridentate carbazolyl rare earth complex and organic boron salt, so that the polymer prepared by adopting the method is controllable in both molecular structure and relative molecular mass. The polymer with the double bonds on the side arm reacts with various sulfhydryl compounds to obtain the high CIS-1,4 conjugated diene polymer with the functional groups on the side arm.

The invention discloses a manufacturing method of an oxygen-bearing Re-(Fe, TM)-B based sintering magnetic body. The manufacturing method comprises the steps of 1 smelting and then coarsely crushing the Re-(Fe, TM)-B based magnetic body, performing secondary crushing to obtain a powder material with 0.5mm average grain diameter, wherein the Re is one or more of Pr-Nd, Nd, Dy, Tb, Gd and Ho, the TM is one or more of Al, Nb, Cu, Ga, Co and Zr; 2 adopting air-flow milling to further grind the powder material obtained in the step 1 till the grain diameter of the powder material is smaller than 5mum; 3 performing magnetic field forming, vacuum sintering and aging treatment on the powder material obtained in the step 2 to obtain a product with 2100-2900ppm oxygen content, wherein the powder material obtained in the steps 1 and 2 are mixed evenly before the next treatment, and rare earth oxide e with average grain diameter smaller than 45mum is added into the powder material when one or more of the secondary crushing, the grinding and mixing treatment is performed. The invention further provides the oxygen-bearing Re-(Fe, TM)-B based sintering magnetic body manufactured by the manufacturing method.