119results about How to "For subsequent application" patented technology

The invention belongs to the field of the preparation of metal powder and relates to a method for preparing spherical porous silver powder. The spherical porous silver powder is prepared by a method combining gas atomization powder preparation and de-alloying. The method comprises the following steps of: firstly, smelting pure metal silver and magnesium according to a certain proportion; secondly, atomizing alloy melt with gas to prepare spherical alloy powder; and finally, performing de-alloying on micro-powder in salt solution and washing and drying the de-alloyed micro-powder. In the method, spherical porous micro-powder is obtained by combining spray powdering and de-alloying, selected etchant solution is non-toxic and harmless neutral salt solution, operation process is simple and process is environmentally-friendly and suitable for industrial mass production. By the method, components of the alloy and a metal phase removing process can also be designed according to requirements on the porosity and specific surface area of a final product, so the structure, size and hole pattern of the porous silver powder are controlled.

The invention discloses a gas-liquid pressurization cylinder. The gas-liquid pressurization cylinder is formed by the fact that a gas pressure cylinder body and a hydraulic cylinder body are in series connection through a middle cover with a middle hole and are separated into a pressurization gas cavity, a pre-pressing gas cavity, a pre-pressing oil storage cavity, a pressurization oil cavity and a stroke returning gas cavity through an upper end cover with a gas guide pipe, a pressurization piston with a hollow pressurization rod, a gas separation piston, the middle cover with the hole, a working piston and a lower end cover. The pressurization gas cavity, the pre-pressing gas cavity and the stroke returning gas cavity are respectively communicated with an exterior gas circuit through respective connectors, and the working processes of the pre-pressing stroke, the pressurization stroke and the reset stroke can be achieved through the control over the gas circuit. Compared with an existing gas-liquid pressurization cylinder, wherein the existing gas-liquid pressurization cylinder is provided with three or more cylinder bodies, and the cylinder bodies are in parallel connection or in serial connection, the gas-liquid pressurization cylinder has the advantages of being exquisite in structure, convenient to machine and high in use efficiency of a gas source. In addition, the design of the structure of conducting reasonable guiding and preventing rotation is added on an output working piston rod of the cylinder, and the installation and application of subsequent use are simplified.

The invention discloses a preparation method of pomegranate-shaped organic-inorganic nano-composite microspheres, which comprises the following steps: mixing an aqueous dispersion solution of silicon dioxide modified by proper amount of double-bond silane coupling agent in a coupling method with a phenylpropyl monomer, anionic emulsifier, non-anionic emulsifier and water, and stirring simply, so that a milky emulsified liquid is obtained; adding initiator to perform emulsion polymerization in the presence of silicon dioxide, so that the pomegranate-shaped organic-inorganic nano-composite microspheres with multiple silicon dioxide particles wrapped in phenylpropyl emulsion particles are obtained finally and are stably dispersed in the emulsified liquid. The preparation method has the advantages that the sources of the raw materials are extensive, the raw materials are easy to obtain, the preparation process is simple, and moreover, in the prepared pomegranate-shaped organic-inorganic nano-composite microspheres, the wrapping rate of silicon dioxide is high, the structure is neat and the placement stability is good. The adhesion property and the film forming performance of the composite microsphere particles are adjustable, the adhesive force and the transparency of the corresponding glue film are good, and the organic-inorganic nano-composite microspheres can be applied to the fields of coating, textile, rubber, plastics, biology, medicine and the like.

The invention relates to the technical field of energy and materials, in particular to a method and device for recycling metal from a waste lithium battery. The method comprises the following steps that the electrode material of the waste lithium battery is used as a cathode, and a noble electrode is used as an anode; and the cathode and the anode are placed in an electrolyte to carry out an electrochemical reaction, a mixed solution containing recycling metal ions is obtained, and the recycling metal ions comprise at least one kind of nickel ions, cobalt ions and manganese ions. The electrochemical reaction is utilized, and lithium, nickel, cobalt, manganese and other metal with high utilization value can be effectively recycled from a waste lithium battery electrode material.

The invention discloses a method and system for preparing a winding-free high-efficiency amorphous ribbon. The method comprises the steps that a plurality of small-bore small melt spraying holes are formed in a melt nozzle at certain intervals, and after a mother alloy molten mass injected out of the small-bore small spraying holes is sprayed to a rapid quenching cooling roll face, the amorphous ribbon is formed independently; the system for preparing the winding-free high-efficiency amorphous ribbon comprises a blending device, a throw-preparing device and an amorphous ribbon automatic collector. The mother alloy is heated to be molten through the high-frequency induction technology, and the alloy melt is sprayed to the cooling roll face which is provided with a transverse groove and rotates fast through the spraying holes with the diameter smaller than 1 mm, wherein the surface of the cooling roll face is polished. The alloy melt sprayed to the cooled roll face is fast cooled on the smooth roll face to form the amorphous ribbon with even thickness and width.

The invention provides a stainless steel product surface passivation method and belongs to the technical field of stainless steel surfaces. According to the stainless steel product surface passivation method, a citric acid type passivation process replaces a strong acid and strong oxidant oriented passivation process. When the stainless steel product surface passivation method is utilized to perform stainless steel product surface passivation, complicated acid pickling or alkali washing activation process is not needed, only simple oil removing pretreatment is needed, and a stainless steel product with about 80 cm<2> passivation area can be passivated by using a 200 ml passivation solution.

The invention belongs to the technical field of preparation of nano materials, and particularly relates to multi-element doped graphene fibers and preparation and application thereof. Ionic liquid isused as a coagulation bath of graphene oxide, then uniformly loaded ionic liquid-graphene fibers are prepared by bonding active groups on the surface of graphene with ionic liquid, non-metal element co-doped graphene fibers are prepared through pyrolysis, and the ionic liquid serves as a nitrogen source, a boron source and a phosphorus source, so that the graphene fibers with good conductivity andhigh electrochemical activity are prepared. The multi-element doped graphene fibers can be used as a microelectrode in an electrochemical sensing system to detect small biological molecules. The problems that in the preparation method of the doped porous graphene fibers in the prior art, the quantity demand on a doping source is large, the process is complex, pollution is caused, the cost is high, and in actual detection, powder needs to coat an electrode are solved.

The invention provides bisphenol A polyether and a preparation method thereof. The preparation method of the bisphenol A polyether is simple in process; and a bisphenol A polyether product is obtained through reaction of bisphenol A and epoxyalkane, curing, degassing and antioxidant addition. By adopting a specific process, the uniform bisphenol A polyether product with low hydroxyl value, low viscosity and low chromaticity can be obtained. The bisphenol A polyether product is low in hydroxyl value, low in viscosity and low in chromaticity, can be kept uniform and stable for a long period of time, subsequent application can be better carried out, and mixing with other materials is facilitated.

The invention discloses a method for preparing a water-soluble polymer by auto-deposition polymerization initiated by ultraviolet light, belonging to the technical field of aqueous dispersion polymerization. The method comprises the following steps of: firstly, preparing reaction liquid: proportionally mixing a photoinitiator, a water-soluble monomer and a solvent in a straight tube glass reaction flask to prepare the reaction liquid, and introducing nitrogen for removing oxygen for 20-40 minutes, wherein the concentration of the photoinitiator in the reaction liquid is 0.1-10mmol/L, and the concentration of the monomer in the reaction liquid is 0.5-6mmol/L; and then, carrying out illumination reaction: putting the reaction flask containing the reaction liquid below an ultraviolet lamp for irradiating for 10-120 minutes. According to the invention, polymers formed in the reaction process are continuously precipitated out, gathered and deposited at the bottom of the reactor, so that the light shielding effect is relieved or eliminated; and meanwhile, the supernatant liquid can be recycled, so that the reaction efficiency is high, and the method is economic and rapid. Through simple decantation, a product can be separated, the method is simple and convenient, and the product is pure and can be dried easily, thereby being favorable for subsequent applications.

The invention relates to carbon nanotube conductive slurry and a preparation method and an application thereof. The preparation method comprises the steps of (1) mixing a surfactant and a solvent, andcarrying out preliminary pre-mixing dispersion to obtain a mixed solution; (2) adding nanotubes into the mixed solution obtained in the step (1) under a vacuum condition, and carrying out deep pre-mixing dispersion to obtain mixed slurry; and (3) carry out high-speed centrifugal dispersion on the mixed slurry obtained in the step (2) to obtain the carbon nanotube conductive slurry. Through the mutual cooperation of preliminary pre-mixing dispersion, deep pre-mixing dispersion and high-speed centrifugal dispersion, the dispersion effect of the carbon nanotubes is improved, and the viscosity ofthe conductive slurry is reduced, thereby improving the conductivity of the conductive slurry, and being conducive to the subsequent application of the conductive slurry. In addition, the conductiveslurry prepared according to the preparation method provided by the invention has the advantages of low viscosity, high solid content and excellent conductivity.

The invention discloses a preparation method of a glycidyl methacrylate communicating porous material with high epoxy group content. The preparation method is characterized in that through high internal phase emulsion polymerization of glycidyl methacrylate (GMA) initiated by constant-temperature radiation, a communicating porous material of glycidyl methacrylate with high epoxy group content is obtained, and raw materials comprise glycidyl methacrylate, cross-linking agents, pore-foaming agents, emulsifying agents, water, inorganic salt and initiating agents. Compared with the reported glycidyl methacrylate communicating porous material, the glycidyl methacrylate communicating porous material prepared by using the method has the advantages of relatively high epoxy group content and relatively narrow cell apertures, and subsequent application of the glycidyl methacrylate communicating porous material is facilitated.

The invention provides a non-supervision and Fourier kernel function based remote sensing image pixel purity identification method. The non-supervision and Fourier kernel function based remote sensing image pixel purity identification method comprises performing segmentation on the original remote sensing image to obtain P objects; performing clustering operation on the P objects to obtain n block masses; setting any block mass ti to comprise d objects and executing following operation which comprises calculating the Fourier kernel function hull convexity which is corresponding to the block mass ti, calculating the distance from the specified object Vf to every object in the b objects to obtain the object T which has the smallest distance from the specified object Vf, wherein the distance from the specified object Vf to the object T is M1, calculating the distance M2 from the specified object Vf to the center of the hull convexity, calculating the distance M3 from the object T to the center of the hull convexity, and calculating the mapping distance value M2 / (M3+M1) which serves as the integral purity value of the specified object Vf. The non-supervision and Fourier kernel function based remote sensing image pixel purity identification method serves as a quantitative method and accordingly the pixel purity of a remote sensing image can be identified accurately.

The invention discloses a nitrogen elastic pressing type composite edge cutting device and a production process thereof. The nitrogen elastic pressing type composite edge cutting device comprises a sample clamping system, a lofting system, a sample moving system, an opening system, a cooling system, fixed cutting systems, a movable cutting system, a cleaning system and a polishing system. According to the nitrogen elastic pressing type composite edge cutting device, by adopting manual intervention, on one hand, the probability of production accidents is greatly reduced, and on the other hand,the sample injection and material moving processes are standardized and unified, and the subsequent processing process can be subjected to quality control. According to the nitrogen elastic pressing type composite edge cutting device, a ceramic material plate is opened by the opening system before cutting and trimming, and an opening is formed in the surface of the ceramic material plate, so thatnot only is a large amount of loss of cutting lines and the like caused by factors such as surface stress in the subsequent cutting process avoided, but also the material plate is prevented from beingdamaged by a large amount of extra heat generated in the machining process due to abraded cutting lines.