56results about How to "Eliminate reunion" patented technology

The invention belongs to the powder preparation field adopting powder metallurgy, and relates to a preparation method of submicron nearly spherical tungsten powder. The method comprises the following steps of: (1) pyrolyzing commercial ammonium paratungstate to obtain ammonium metatungsten; (2) dissolving the ammonium metatungsten in ammonia water; (3) filtering to obtain an ammonium tungstate solution; (4) adding a dispersant in the ammonium tungstate solution to mix evenly; (5) adding a precipitator while stirring to obtain tungstic acid sol; (6) performing vacuum filtration to obtain tungstic acid gel; (7) performing common drying or freeze drying; (8) crushing; (9) pyrolyzing to obtain tungsten trioxide; (10) performing ball milling; and (11) performing hydrogen reduction to obtain the submicron nearly spherical tungsten powder. By adopting the preparation method, the submicron nearly spherical tungsten powder can be prepared stably; and the technology is simple, the cost is lower, and mass production can be realized.

The invention relates to a method for preparing bismuth oxide nano powder by novel chemical liquid phase precipitation, reversely titrating bismuth nitrate into excessive basic alcohol-water solution and obtaining deposit, then washing with deionized water, dispersing and extracting with anhydrous alcohol; then drying and burning and making highly pure and ultrafine bismuth oxide powder. And it has good dispersivity, grain size of 30 nm about, and its crystal phase is a single alpha phase.

The invention relates to a method to produce the composite zirconia nano powder. It is to make the ZrO2-HfO2-Y2O3-Sc2O3 nano powder in the alcohol-water solution by the method of sol-gel. The invention controls the addition of the metal ion and the PEG 6000 and adjusts the pH by adding the ammonia the process includes the sol-gel, the de-ionized water washing, the absolute ethyl alcohol filtration, drying and calcinations. The average particle diameter is 15nm.

The invention relates to a preparation method of an ammonium polyphosphate cladded microsphere flame retardant. The preparation method comprises the following steps: carrying out silylation modification on the CMSs by taking CMSs (Carbon Microspheres) as a carbon source and APP as an acid source and a gas source; dissolving the APP in hot water to prepare a suspension solution; mixing the APP suspension solution with a silylation modified CMSs dispersion solution and carrying out refluxing reaction; and cladding the silylation modified CMSs through the APP to prepare the CMSs-APP flame retardant. The flame retardant prepared by the method is used for preparing a flame-retarding PET (Polyethylene Terephthalate) composite material so that the flame-retarding performance of PET can be improved and the worsening, caused by the flame retardant, of mechanical properties of a PET matrix can be reduced to the greatest extent.

The invention relates to the field of a dye-sensitized solar cell photoanode active membrane manufacturing technology, and in particular relates to a dye-sensitized solar cell photoanode active membrane and a preparation method of the active membrane, aiming at solving the problems that the dye-sensitized solar cell photoanode active membrane prepared by the existing method is lower in mutual penetration degree among the stacked active substances, lower in compatibility and low in exciton separation efficiency, and an electronic transmission channel is not smooth enough. The invention provides the preparation method of the dye-sensitized solar cell photoanode active membrane; the excellent characteristics of electric conduction and adsorption of a carbon nano tube are utilized, a transparent conductive substrate is organically combined with a titanium dioxide active layer by the carbon nano tube, and the carbon nano tube has the functions of optimizing the electrochemical performance of the surface of a transparent conductive film and improving the dispersity and the light absorption intensity of the titanium dioxide.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a preparation method of a metal oxide composite magnesium hydride hydrogen storage material. Themethod comprises the steps that magnesium hydride serves as a base material, metal oxide particles are mixed, the mass percentage content of metal oxide in the mixture is 1%-8%, and the mixture is subjected to hydrogen filling ball milling in a ball mill to obtain the metal oxide composite magnesium hydride hydrogen storage material. By adding the nanoscale metal oxide particles, the hydrogenation speed of the magnesium-based composite powder in the hydrogen charging ball milling process can be increased, and reduction of the particle size of magnesium hydride is facilitated; the nanocrystalline MgH2 is coated with the metal oxide to form a core-shell structure with an excellent synergistic effect, the core-shell structure has a good catalytic effect and remarkable dynamic performance, the hydrogen storage reaction speed can be improved, microcell heat release can be controlled, agglomeration of a hydrogen storage reactant Mg (OH) 2 can be effectively eliminated through the metal oxide, and the hydrogen storage efficiency is improved. Therefore, the purpose of sufficient hydrolysis reaction is achieved.

The invention discloses a compound grinding aid for cement. The compound grinding aid comprises the following components in parts by weight: 12-28 parts of polyalcohol amine, 12-28 parts of polyalcohol, 6-13 parts of lignosulfonate, 3-7 parts of sodium stearate, 6-12 parts of molasses, 2-6 parts of sodium sulfate and 22-28 parts of water. The compound grinding aid disclosed by the invention has the beneficial effects that environment-friendly, stable and low-toxicity materials are adopted, so that better synergistic effect of all the components is ensured, the grinding-aiding requirements of all the materials at different grinding stages can be met, the optimum grinding-aiding effect is achieved, the particles are refined, the particle aggregation is eliminated and the grinding efficiencyis improved.

The invention relates to a nanoparticle surface modification method, comprising following steps: the nanoparticle is processed by SOCl2, and is reacted with tert-butyl hydrogen peroxide (TBHP) to form into a peroxide solicitation radical; the free radical polymerization reaction is transferred by reverse atomy which is triggered through the surface, and the polymerization of the cinnamene monomer is triggered by the free radical polymerization reaction; thereby the nanometer compound particle which is enwrapped by the graft polystyrene on the surface of the nanoparticle is prepared. Due to the active compound particle at the end of the outer-layer polymer of the nanometer compound particle composed through the free radical polymerization reaction of reverse atomy transfer triggered by the surface, the active compound particle can be used as giant molecule evocating agent to trigger the methacrylic acid methyl ester monomer to implement free radical polymerization transfer through the atomy on the surface; after the two surface solicitation polymerizations, the nanometer compound particle which is enwrapped by the methacrylic acid methyl ester is prepared. The invention has the advantages that: a good organic and inorganic nanometer compound material can be prepared through the surface solicitation polymerization reactions, and the nanoparticle surface is modified successfully, and the dispersivity and stability of the nanoparticle can be improved.

The invention discloses an ecological and environment-friendly coating and a preparation method thereof. The coating is prepared from raw materials in parts by weight as follows: 0.05-0.15 parts of a pH regulator, 0.3-0.8 parts of a dispersant, 10-15 parts of a hydroxyethyl cellulose solution, 0.1-0.4 parts of a wetting agent, 0.1-0.4 parts of an antifoaming agent, 1-10 parts of negative oxygen ion powder, 10-20 parts of titanium dioxide, 0.05-0.2 parts of a molecular sieve silver-loaded antibacterial agent, 0.1-0.4 parts of a preservative, 2-10 parts of quartz / nano-titanium dioxide compound slurry, 10-20 parts of superfine quartz powder slurry, 15-40 parts of a water-based acrylic emulsion, 0.2-1.0 part of a thickening agent and 20-30 parts of deionized water. The coating has good performance, the formaldehyde purification rate is higher than 95%, the formaldehyde purification durability is longer than 90%, the antibacterial effect is higher than 90%, and the negative oxygen ion release amount is larger than 8000 per cubic centimeter.

The invention provides an antibacterial PU shoe material. The antibacterial PU shoe material is prepared from the following ingredients in parts by weight: 35-50 parts of polyalcohol, 1-4 parts of chain extender, 40-60 parts of isocyanate, 2-6 parts of nano zinc oxide, 0.5-3 parts of coupling agent, 0.5-2 parts of dispersant, 0.1-3 parts of cross-linking agent and 0.2-2 parts of catalyst. The invention further discloses a preparation method of the antibacterial PU shoe material. The antibacterial PU shoe material provided by the invention has relatively good antibacterial performance.

The invention discloses a lanthanum or yttrium doped aluminum zinc oxide powder and codeposition-supercritical fluid drying method for preparing the same which comprises, washing the precipitate synthesized through liquid phase co-precipitation with deionized water and ethanol, carrying out shrinkage-proof drying with ethanol dissolvent, thus the prepared powder has compact crystalline structure.

The invention discloses a method for treating cathode materials, and is suitable for treating the cathode materials which are subjected to modifying treatment to improve the property of the materials. The method comprises the following processes: a. the cathode materials are subjected to washing treatment, washing media for washing and treating comprise a washing medium containing a surface active agent. The invention also discloses a battery for treating the cathode materials by the method, the cathode materials for the battery are subjected to modifying treatment, and washing treatment through the washing medium with the surface active agent, and the cathode materials after the washing treatment are separated from the washing medium. The method eliminates the glomeration among particles of the cathode materials, thereby improving the foil-cladding capability and the electric conductivity of the materials. When the materials treated by the method are used to manufacture positive plates, the bonding between the cathode materials and a current collector is better, and the cathode materials are distributed uniformly, thereby the battery of the invention has higher gram specific capacity to exert and higher cycle performance.

The invention relates to a high-toughness zirconia-based composite powder and a preparation method thereof. The preparation method comprises the following steps: mixing zirconium salt, yttrium salt, third-period metal salt and a dispersant, and adjusting the concentration of H+ in an obtained mixture; carrying out a hydrothermal reaction so as to obtain a hydrated zirconia suspension; adjusting the pH value of the hydrated zirconia suspension to alkaline, and carrying out standing and aging; centrifuging an above-mentioned mixed solution, carrying out washing, drying and calcining, uniformly mixing a calcined powder with deionized water and a dispersant, carrying out ball milling so as to obtain a slurry, and subjecting the slurry to fine grinding, centrifuging, washing and drying so as toobtain the high-toughness zirconia-based composite powder. The ceramic prepared from the above-mentioned nanometer zirconia-based ceramic powder has excellent mechanical properties, especially high fracture toughness, and is specifically applicable to being used as a 5G mobile phone back sheet material.

The invention relates to a composite rare earth modified zirconia ceramic powder and a preparation method thereof. The preparation method comprises the following steps: heating a mixed solution of zirconium salt, rare earth salt and a dispersant to 25 DEG C to 90 DEG C, and adding ammonia water or an acid liquid into the mixed solution so as to adjust the concentration of H+ in the mixed solutionto 0.1 to 5 mol / L; heating the H+ concentration adjusted solution, carrying out a hydrothermal reaction, and after the reaction is completed, carrying out cooling to 90 DEG C or below so as to obtaina hydrated zirconia suspension; adding ammonia water into the hydrated zirconia suspension so as to adjust the pH value of the hydrated zirconia suspension to alkaline, and carrying out standing and aging; and centrifuging the mixed solution, carrying out washing, drying and calcining, uniformly mixing a calcined powder with deionized water and a dispersant, carrying out ball milling so as to obtain a slurry, and subjecting the slurry to fine grinding, centrifuging, washing and drying so as to obtain a nanometer composite rare earth modified zirconia ceramic powder. The method provided by theinvention solves the technical problem of consumption of a large amount of ethylene glycol and polyvinyl alcohol organic matters and difficult treatment of organic-matter wastewater generated in a conventional method.

The invention discloses a method for removing heavy metal cadmium in shellfish enzymatic hydrolysate. The method includes the following steps of firstly, preparing Fe3O4 magnetic nanoparticles; secondly, preparing SiO2 core-shell magnetic microspheres; thirdly, preparing polyaspartic acid modified chitosan; fourthly, preparing composite aerogel; fifthly, processing the shellfish enzymatic hydrolysate; sixthly, removing cadmium. The heavy metal cadmium in the shellfish enzymatic hydrolysate is removed through the composite aerogel in cooperation with ultrasonic adsorption, operation is simple,the method has the advantages that the pH application range is wide, the cadmium removal effect and removal efficiency are high and separation is convenient, and the method has industrialized application prospects.

The invention relates to a zinc-aluminum oxide powder doped with lanthanum or yttrium and a co-precipitation-supercritical fluid drying preparation method. After the precipitate synthesized by liquid-phase co-precipitation is washed with deionized water and ethanol, it is washed with ethanol solvent under supercritical conditions. No shrinkage drying under the characteristics of no obvious liquid-gas interface, which combines the advantages of both, eliminates or reduces the agglomeration between zinc-aluminum composite oxide nanopowders, and realizes doping, Al 2 o 3 The mass ratio to ZnO is 3:97. High powder output ratio, simple method, easy control of product particle size, and low cost. The prepared powder has a hexagonal wurtzite crystal structure, small agglomeration among powders, good dispersion, particle size less than 100nm, and dense fine-grained structure. The invention solves the problem of powder agglomeration, can be sintered into various shapes, and has excellent photoelectric performance as a target material. Using magnetron sputtering, vacuum evaporation and other methods to prepare transparent electrodes for flat display devices such as liquid crystal and plasma, and solar cells on the substrate.

The invention provides a bottom blowing reduction device. The bottom blowing reduction device comprises a furnace body, a feed port, a discharge port, a reduction gas inlet and a reduction gas outlet;the furnace body is transversely arranged, and forms a certain included angle with the horizontal direction; in the length direction of the furnace body, a gas cavity and a material cavity are formedin the furnace body; the gas cavity and the material cavity are separated by a porous plate; the feed port is formed in one higher end of the furnace body; and the reduction gas inlet and the reduction gas outlet both communicate with the gas cavity. The invention further provides a method for bottom blowing reduction by using the device; and materials to be reduced are fed in the material cavityfrom the feed port, slowly move downwards along the inclined furnace body under coaction of the gravity and the reduction gas, and are finally reduced and output from the discharge port. The method has no need to use a push rod or a conveying belt for driving a boat container to move, so that the boat container and a conveying device are omitted.

The invention relates to the technical field of lithium battery production, and provides a lithium battery slurry defoaming and grinding method and device. The lithium battery slurry defoaming and grinding device comprises a tank body and a cover body, wherein an accommodating cavity for storing lithium battery slurry is formed in the tank body; the cover body is arranged at the open end of the tank body in a sealing and covering manner; a vacuumizing opening and a stirring and grinding mechanism are arranged on the cover body; the vacuumizing opening is communicated with the accommodating cavity; and the stirring and grinding mechanism extends into the accommodating cavity and is used for stirring and grinding the lithium battery slurry in the accommodating cavity. The lithium battery slurry defoaming and grinding method comprises the following steps: vacuumizing the accommodating cavity filled with the lithium battery slurry in real time through the vacuumizing opening; stirring andgrinding the lithium battery slurry in the accommodating cavity through the stirring and grinding mechanism. According to the embodiment of the invention, the lithium battery slurry is defoamed and ground simultaneously.

The present invention relates to the production process of calcium carbonate, and especially one ultrasonic cavitation process of producing nano calcium carbonate. The present invention solves the problem of slow mass transferring rate among gas, liquid and solid phases. The production process includes calcining limestone in a vertical kiln to obtain CaO and CO2, hydration of CaO in a digestor to obtain Ca(OH)2, carbonation of Ca(OH)2 emulsion with kiln gas CO2 in a reactor to obtain superfine CaCO3, the CaCO3 slurry is spray dried to obtain superfine calcium arbonate powder, and the ultrasonic cavitation treatment during hydration, preparing slurry and carbonation in separate ultrasonic crusher. Each ultrasonic crusher has power of 6100-7000 w, frequency of 15-19 KHz and 8-16 emitters provided.

The invention provides silicon-carbon negative electrode material slurry and a preparation method thereof. The method comprises steps of 1) dividing CMC glue solution into two parts, and mixing a first part of the CMC glue solution with conductive agent and a silicon carbon material to obtain slurry 1; 2) adding a graphite material into the slurry 1, and dispersing the material to obtain slurry 2;3) adding a second part of CMC glue solution and the water into the slurry 2, vacuumizing, and dispersing the material to obtain slurry 3; and 4) adding SBR binder into the slurry 3, dispersing, sieving the slurry, and discharging bubbles to obtain silicon-carbon negative electrode material slurry. The method is advantaged in that the agglomeration phenomenon of the silicon-carbon particles in the pulping process is eliminated, that the graphite material uniformly wraps the silicon-carbon particles is guaranteed, and the overall cycle life of a battery is improved.

The invention discloses a preparation method of lithium carbonate. The preparation method comprises the steps of size mixing, neutralization and leaching, alkalization and impurity removal, slag treatment, concentration and filtration, ion exchange, lithium precipitation, primary product washing and separation and drying. According to the method, many defects of the existing sulfuric acid method for producing lithium carbonate are overcome, and the leaching rate of lithium, the impurity removal and purification effect of the lithium sulfate solution, the conversion rate of lithium precipitation reaction and the lithium yield are effectively improved through combined application of the ultrasonic technology; the lithium yield of the whole process is further improved through recovery of lithium in the leaching residues and the alkalization residues and reuse of the heat-out mother liquor generated in the preparation process of the byproduct sodium sulfate. The method is simple in process, convenient to operate and high in industrial feasibility; the lithium yield is greater than 95%, the product purity is high, the quality is stable, and the standard of battery-grade lithium carbonate products in the industry is reached.

The invention discloses a method for preparing a transmission electron microscopy sample of biomimetically synthesized magnetic ferritin nanoparticles. The method comprises the following steps: mixinga buffer solution of the biomimetically synthesized magnetic ferritin nanoparticles with deionized water, and diluting to an appropriate concentration; ultrasonically shaking the mixed liquid in a cold bath to obtain a fully mixed sample suspension; performing anti-static dust removal treatment on an ultra-thin carbon film grid; wetting the ultra-thin carbon film grid; placing the treated ultra-thin carbon film grid on clean filter paper, and titrating the sample suspension on the surface of the filter paper; drying the ultra-thin carbon film grid carrying the sample suspension; and after thesample is completely dried, taking the sample out to obtain a magnetic ferritin nanoparticle transmission electron microscopy sample. Through adoption of the method, the problems of difficulty and low efficiency in preparation of the transmission electron microscopy sample of the magnetic ferritin nanoparticles and unclean back bottom of the ultra-thin carbon film grid can be solved, and the intrinsic monodisperse state of the sample can be presented well.

The invention belongs to the technical field of material science, and particularly relates to a method for preparing nano zirconium oxide by an internal gel method. The method comprises the followingsteps of: carrying out in-situ curing on a zirconium source and a urea solution through chemical gel, continuously heating to urea decomposition to convert the colloid into a precursor of zirconium oxide, drying the colloid and calcining at 800 DEG C for 4 hours to obtain high-quality composite nanometer zirconium oxide. The reaction is a uniform reaction, the nucleation granularity is uniform, sothat the composite nano zirconium oxide powder with uniform size and good dispersity is obtained; and compared with a traditional gel method process, the method has the advantages of small colloidalparticles, easiness in reaction, convenience in cleaning, loading and transportation, and elimination of agglomeration of the nano zirconium oxide powder while operation steps are simplified.

The invention relates to a silicon through hole barrier layer alkaline polishing solution, which comprises glycine, arginine and an azole compound, wherein the addition mass of the arginine is at least one time of the addition mass of the glycine, the arginine contains guanidyl, and when the guanidyl in the arginine is combined with the azole compound for use, the removal rate ratio of tantalum to copper is adjusted. According to the invention, the molecular structure of arginine contains amino and hydroxyl to provide chelation, the arginine contains guanidyl and is alkaline amino acid, the arginine is used as a rate improver of tantalum to accelerate removal of tantalum, the removal rate selection ratio of metal tantalum and copper is adjusted by adjusting the content of the guanidyl in the arginine, and the azole compound acts with the amino and the hydroxyl and also acts with the guanidyl, so that the azole compound not only can play a role in corrosion inhibition of metal copper, but also can play a good role in correcting the dish-shaped pit.

A nano gallium nitride spherical powder preparation method is characterized by including the following steps: putting a gallium oxide powder into a microwave heating device full of ammonia gas, and carrying out a reaction, to obtain a gallium nitride powder; and then carrying out ball-milling crushing of the gallium nitride powder, carrying out sieving treatment, and then carrying out induction plasma treatment to obtain the nano gallium nitride spherical powder. Compared with the prior art, the two-step method is adopted for preparation of the high-quality nano gallium nitride spherical powder, that is to say, the primary gallium nitride powder is prepared by the microwave solid-phase synthesis method firstly and then is further deeply processed through the induction plasma method; therefore, the purity of the gallium nitride powder can be improved, the powder can be nanocrystallized, and the gallium nitride powder with good dispersibility and high quality is obtained.

The invention discloses a reaction process for precipitating white carbon black through a stirring and milling method. Water glass is reacted with acid; and the reaction process comprises a reaction procedure and a curing procedure, wherein the reaction procedure is carried out in an acid and water neutralization stirred tank, and ceramic ball milling bodies are added into the acid and water neutralization stirred tank. In the reaction process, the stirring efficiency is greatly improved, and the generation of 'white spots' is radically stopped; moreover, the grain size is obviously reduced, so that the water glass with higher concentration can be reacted with the acid.

In one embodiment, a catalyst ink includes a number of catalytic particles each including a particle base which supports a 2-dimension (2D) extensive catalyst film, the 2D extensive catalyst film including at least one precious metal. The 2D extensive catalyst film may contact an exterior surface of the particle base. The 2D extensive catalyst film may contact an interior surface of the particle base. In another embodiment, the particle base has a base dimension that is 50 to 10,000 times greater than a thickness of the 2D extensive catalyst film. In certain instances, the particle base has a base dimension that is 100 to 5,000 times greater than a thickness of the 2D extensive catalyst film.

The present invention provides a silicon carbon negative electrode material slurry and a preparation method thereof, comprising the following steps: 1) dividing the CMC glue into two parts, and mixing the first part of the CMC glue, a conductive agent and a silicon carbon material to obtain a slurry 1 2) Add graphite material to slurry 1, and disperse to obtain slurry 2; 3) Add second part of CMC glue and water to slurry 2, vacuumize, and disperse to obtain slurry 3; 4) To slurry 3 SBR binder is added to the medium, and after dispersion, the slurry is sieved to remove air bubbles to obtain a silicon carbon negative electrode material slurry. Eliminate the agglomeration of silicon carbon particles during the pulping process, ensure that the graphite material is evenly wrapped around the silicon carbon particles, and improve the overall cycle life of the battery.

The invention relates to a high-toughness zirconia-based composite powder and a preparation method thereof. The preparation method comprises the following steps: adjusting the H + The concentration of the zirconia hydrate suspension is obtained by hydrothermal reaction; the pH of the zirconia hydration suspension is adjusted to alkaline and then left to age; the above mixed solution is centrifuged, washed, dried, and calcined, and the calcined The powder is uniformly mixed with deionized water and a dispersant, and then ball-milled to obtain a slurry, and then the slurry is finely ground, centrifuged, washed and dried to obtain a high-toughness zirconia-based composite powder. The ceramics made of the above-mentioned nano-zirconia-based ceramic powders have very good mechanical properties, especially high fracture toughness, so they are especially suitable as 5G mobile phone backplane materials.

The present invention relates to the field of chemical industry equipment, particularly to a spouted circulating fluidized bed reactor, wherein the spouted circulating fluidized bed comprises a monitoring system, a material feeding system, a main reactor, a gas-solid separation system, a filter, a gas purification system, a gas recovery system and a pre-heating system, and the monitoring system, the material feeding system, the main reactor, the gas-solid separation system, the filter, the gas purification system, the gas recovery system and the pre-heating system are sequentially connected in a head-tail-connection manner. According to the present invention, with the spouted circulating fluidized bed, the disadvantages that the contact of the gas phase and the solid phase in the ring-gap region is poor and the spouting under the high bed layer is instable are overcome, the phenomenon that layering or section communication is easily generated inside the fluidized bed is avoided, the generation of the dead region on the bottom portion of the ring-gap region and the agglomeration of the easily bonded particles are basically eliminated, the non-condensable gas is adopted as the circulating fluidized bed so as to avoid the use of the expensive external inert gas, and the advantages of easy industrialized scale-up and low operating cost are provided.