432results about How to "Small particle size" patented technology

The invention discloses an isatis root oil microcapsule and an isatis root oil microcapsule functional fabric finishing agent. The isatis root oil microcapsule of the invention has a particle size of 5-10 microns, and a mass ratio of a core material and a wall material of 1:0.5-1.75; the isatis root oil microcapsule functional fabric finishing agent comprises 40-65% of isatis root oil microcapsule emulsion, 5-15% of crease resistant cross-linking agents, 1.5-5% of catalysts, 0.2-2% of penetrating agents, 5-8% of softeners, and 10-35.75% of water. The isatis root oil microcapsule of the invention can cover adverse smell of isatis root oil, slowly release isatis root oil, maintain the stability of isatis root oil, and prolong its efficacy. The isatis root oil microcapsule functional fabric finishing agent of the invention provides finished fabrics with a plurality of functional effects such as durable and antibacterial effect, antiviral effect, and crease resistance, and provides fabrics with good softness and permeability.

Provided are nickel manganese composite hydroxide particles that are a precursor for forming cathode active material comprising lithium nickel manganese composite oxide having hollow structure of particles having a small and uniform particle size for obtaining a non-aqueous electrolyte secondary battery having high capacity, high output and good cyclability. When obtaining the nickel manganese composite hydroxide particles from a crystallization reaction, an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel and a metallic compound that contains manganese, and does not include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60 DEG C or greater, and so that the pH value that is measured at a standard solution temperature of 25 DEG C is 11.5 to 13.5, and after nucleation is performed, an aqueous solution for particle growth, which includes the nuclei that were formed in the nucleation step and does not substantially include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60 DEG C or greater, and so that the pH value that is measured at a standard solution temperature of 25 DEG C is 9.5 to 11.5, and is less than the pH value in the nucleation step.

The invention relates to a preparation method for a fluorescent carbon quantum dot, and discloses a preparation method for a fluorescent carbon quantum dot with vitamin as the carbon source. The method includes the steps of: a. vitamin solution preparation: adding vitamin into a solvent, conducting magnetic stirring in a water bath pot at a temperature ranging from room temperature to 100DEG C to obtain a vitamin solution; b. solvothermal synthesis reaction: placing the vitamin solution into a reaction kettle to carry out heating reaction at 180-220DEG C; c. carbon quantum dot preparation: performing natural cooling to room temperature, then conducting centrifugation at a rotation speed of 10000-15000r/min for 10-30min, then taking the supernatant, and performing freeze drying, thus obtaining the fluorescent carbon quantum dot. According to the invention, the obtained carbon quantum dot has a small particle size of 2-5nm, and is uniformly dispersed, has high quantum yield and strong fluorescence properties, low toxicity, and good biocompatibility, and can be applied to cell imaging and detection of Cu<2+> and Fe<3+>.

The invention discloses a preparation method of a shape-controllable hollow carbon microsphere, belonging to the technical field of energy materials. The preparation method comprises the following steps of: firstly, preparing a polystyrene microsphere with monodispersity by adopting a soap-free emulsion polymerization method; modifying the surface of the polystyrene microsphere by acidizing treatment of concentrated sulfuric acid to enable the surface to have a sulfonic acid group (-SO3H-) with initiation activity to resol; then, dropping a resol ethanol solution into anhydrous ethanol in which the modified polystyrene microsphere is dispersed to enable the solution to carry out cross-linking reaction on the surface of the microsphere to prepare a compound microsphere in a core-shell structure; and finally, putting the compound microsphere in the inert gas protecting environment for carbonizing. The invention can effectively control the particle size of the hollow microsphere by changing the particle size of the microsphere, avoids an operating process of removing a template, effectively reduces the preparation processes, and can realize the purpose of controlling the shape of the hollow carbon microsphere only by changing one variable in the same system.

The invention relates to a preparation method of cerium oxide nanoballs, and belongs to the technical field of the preparation processes of the inorganic nanomaterials. The key points of the method of the invention include: stirring and mixing cerium salt and a certain amount of surfactant at room temperature, dissolving the mixture in a mixed solution of water and an organic solvent and ultrasonically processing the mixture for 5 to 10 minutes, wherein the cerium salt is optimally cerium nitrate; the surfactant is most preferably polyvinylpyrrolidone; and the belonged organic solvent is most preferably diglycol; then transferring the mixed solution into a high pressure reaction kettle to perform a solvothermal reaction; heating the mixed solution to perform reaction for 24 to 28 hours at the temperature of 100 to 200 DEG C so as to obtain the cerium oxide nanoball sol; evaporating the sol at the temperature of 1500 o 180 DEG C to dryness; and forging the obtained powder for 1 to 4 hours at the temperature of 400 to 600 DEG C; and finally obtaining the cerium oxide nanoballs in the shape of yellow solid powder. The nanoballs have a particle size ranging from 30 to 160nm and high performance and can be applied in fields of ultraviolet light shielding, mechanical polishing and automobile exhaust catalyzation and the like.

Disclosed is a porous metal oxide obtained by subjecting metal alkoxide and/or a partially hydrolyzed condensate of the metal alkoxide to a sol-gel reaction in the presence of terminally branched copolymer particles represented by the following general formula (1) and having a number average molecular weight of not more than 2.5×10⁴ to obtain an organic-inorganic composite and removing the terminally branched copolymer particles from the composite,

The invention discloses a copper based catalyst used for hydrogenating carbon dioxide to synthesize methanol, and a preparation method and an application thereof. The preparation method of the catalyst comprises the following steps: 1, processing a zinc salt, an aluminum salt, a zirconium salt and a stabilizer to prepare a first solution, or processing the zinc salt, the aluminum salt and the zirconium salt to prepare a second solution; 2, processing carbonate and hydroxide to prepare a third solution; 3, processing a copper salt to prepare a fourth solution; 4, processing the first solution and the third solution to form a first precipitation solution, or processing the second solution and the third solution to form a second precipitation solution; 5, adding the fourth solution to the first precipitation solution to form a third precipitation solution or adding the fourth solution to the second precipitation solution to form a fourth precipitation solution, ageing after Cu in the precipitation solution precipitates, and washing; and 6, drying, and calcining. The catalyst contains 30-50% of Cu, 20-40% of Zn, 10-20% of Al, and 5-20% of Zr. The catalyst is used for a reaction for hydrogenating carbon dioxide to synthesize methanol.

The invention relates to a starch-based nano biological latex and a preparation method thereof. The starch-based nano biological latex comprises the following components by weight percent: starch with 14 percent of water content or starch derivative, 10 to 22.2 percent of plasticizer, 0.17 to 2 percent of lubricant and 0.17 to 15 percent of starch modifying agent, and the weight percent is based on the weight of absolute dried starch or starch derivative. The starch-based nano biological latex has the advantages of low viscosity, good viscosity stability, high binding power and the like, also has the characteristics of narrow molecular weight distribution and excellent film forming property and can be used for partially or completely replacing the petroleum base styrene butadiene latex applicable to the filed of papermaking.

The present invention provides ceramide nanometer lipidosome preparation, a preparation method and application thereof and concretely relates to the ceramide nanometer lipidosome preparation, the preparation method and the application thereof. The present invention is characterized by mixing and emulsifying the ceramide with the weight percentage of 0.1 percent to 5 percent, 1 percent to 20 percent of phospholipid, 10 percent to 70 percent of glycerin, 25 percent to 80 percent of water etc. orderly and uniformly under the temperature condition of 60 DEG C to 80 DEG C. Finally, a high pressure viscolizer is used for processing the materials to obtain the transparent or semitransparent ceramide nanometer lipidosome preparation with average grain size less than 100nm. The ceramide nanometer lipidosome preparation has the characteristics of high stability, water dispersibility, biological compatibility etc., which can be widely applied to the cosmetic preparation technical field.

The present invention discloses one kind of nanometer antiseptic silver gel for external application to treat women's genital tract infection. The nanometer antiseptic silver gel contains nanometer silver colloid of silver particles in size 1-20 nm, pharmaceutically acceptable excipient and diluent. The present invention also discloses the preparation process and application of the gel. The product of the present invention is applied through vagina to treat vaginitis, cervicitis or mixed infection, and may be used as externally applied medicine for treating skin infection and surgical infection and as the antiseptic component in cosmetics.

The invention provides an antibacterial thermoplastic plastic composition, comprising the following blending components in parts by weight: 100 parts of thermoplastic plastic, 0.1-20 parts of polymer guanidine/polysilicate compound antibacterial agent, 0-0.5 part of antioxidant, 0-5 parts of dispersing agent and 0-30 parts of compatilizer, wherein the polymer guanidine/polysilicate compound antibacterial agent is obtained by mixing inorganic acid salt aqueous solution or organic acid salt aqueous solution of water-soluble polymer guanidine with water-soluble silicate aqueous solution and thenadding water-soluble metal salt aqueous solution, wherein the molar ratio of the inorganic acid salt or organic acid salt of the water-soluble polymer guanidine to the water-soluble silicate is (10:1)-(1:50), and the molar ratio of the water-soluble silicate to the water-soluble metal salt is (5:1)-(1:3). The antibacterial thermoplastic plastic has the characteristics of high antibacterial effectand strong water resistance, and simultaneously, the preparation method is simple.

The invention discloses a catalyst for carbon dioxide methanation and a preparation method of the catalyst, belonging to the technical field of carbon dioxide methanation. The catalyst for carbon dioxide methanation is composed of a composite carrier and an active ingredient at a ratio of 84-90wt%:10-16wt%, wherein the composite carrier is composed of gamma-Al2O3 and water soluble metal oxide at a mass ratio of 77-86:2-10; and the active ingredient is Ni which exists in the catalyst in a form of NiO. The catalyst is high in activity, low in cost and better in stability, and can be used for carbon dioxide methanation reaction under normal pressure condition.

Disclosed are methods of preparing solution polymers and compositions derived therefrom.

A method of polishing transparent armor, preferably to optical clarity. The method can be used on flat or contoured armor, manually or via robotic automation. The method includes using a step-wise progression of diamond, structured abrasive articles.

The invention discloses a continuous preparation method for nanometer dispersed vitamin A microcapsule, comprising the following steps: the vitamin A crystal, the antioxidant and the solvent are ground until the particle size of the vitamin A is 2 to 5 mu m, the vitamin A dispersion liquid is prepared; the vitamin A dispersion liquid is heated by a preheater and dissolved and cooled, then the solution is sent into a crystallizer of the supergravity rotating packed bed with the liquid distributor, at the same time the water solution with protection colloid is sent into the above crystallizer of the supergravity rotating packed bed, the nanometer dispersed vitamin A dispersion liquid is obtained at the outlet, the dispersion liquid is in spray drying in the spray drying device with fluidization cooling device to obtain the nanometer dispersed vitamin A microcapsule. The invention has the advantage of continuous production, because the vitamin A crystal grain in the product is small, the product has wide application and high bioavailability.

The invention relates to the field of lithium batteries, and discloses a lithium ion battery negative electrode sheet containing an electric-conduction coating, and a preparation method thereof. The negative electrode sheet comprises a copper foil current collector, an electric-conduction coating and a negative electrode active material layer, wherein the negative electrode active material layer is formed by curing a negative electrode slurry, the negative electrode slurry comprises 93-95 parts of graphite, 1.5-2.5 parts of electric-conduction carbon black SP, 1-2 parts of sodium carboxymethylcellulose, 2-3 parts of styrene-butadiene rubber, and 130-150 parts of deionized water, the electric-conduction coating is formed by curing an electric-conduction slurry, and the electric-conductionslurry comprises 10-95 parts of a composite carbon source, 5-50 parts of a binder, 5-40 parts of a dispersing agent, and 450-550 parts of an organic solvent. According to the present invention, the current collector is coated with the special electric-conduction slurry layer, such that the specific surface area is large, the impedance is low, the bonding force of the electrode sheet can be substantially improved, the electric conductivity can be enhanced, the adding amounts of the binder and the electric-conduction agent can be reduced, and the energy density of the battery can be improved.

The invention relates to a pigment dispersion method, a pigment mixture, light-cured ink and thermo-cured ink. The pigment dispersion method comprises the steps of: mixing 0.05-20wt% of dispersion resin and 5-10wt% of solvent in a stirring way, and preparing dispersion resin solution; mixing 1-20wt% of dispersing agent and 15-20wt% of solvent in a stirring way, and preparing dispersing agent solution; adding 5-20wt% of pigment to be dispersed into the dispersing agent solution, and preparing first mixed solution; adding the dispersion resin solution into the first mixed solution, and preparing second mixed solution; adopting 20-55wt% of solvent to dilute the second mixed solution; and using a sand mill to grind and disperse the second mixed solution which is evenly diluted. The invention has the advantages of small grain diameter, narrow range of grain fineness distribution, low viscosity, excellent wettability, high storage stability and the like.

The invention is to provide an image forming apparatus and an electrophotographic cartridge, which are free from problems of cleaning failure, filming, soiling, residual images (ghosts), fogging, density reduction, noise and the like and which can provide high-definition images even when a toner having a small particle size and having a high degree of circularity is used and even when a photoreceptor having a small outer diameter is used. An image forming apparatus comprising: an electrophotographic photoreceptor containing a conductive support and a photosensitive layer on the conductive support, a charging unit for charging the electrophotographic photoreceptor, an imagewise exposing unit for imagewise exposing the charged electrophotographic photoreceptor to form an electrostatic latent image thereon, a developing unit for developing the electrostatic latent image with a toner, and a transferring unit for transferring the toner from the electrophotographic photoreceptor to a receiving unit, wherein the outer diameter of the electrophotographic photoreceptor is 20 mm or less, the photosensitive layer contains a polyarylate resin, and the toner satisfies the specific requirements (1) and (2).

A process of using solutions containing thiosulfate and/or chloride salt reagents to remove SO₃ and H₂SO₄ acid gases from a flue gas. The solution is injected into a moving volume of flue gas to achieve a droplet size that enables the solution to dry on contact with the flue gas, generating dried particles of the reagent that react with the SO₃ and H₂SO₄ acid gases yielding a salt precipitate. SO₂ present in the flue gas may also be absorbed with the solution, with a subsequent reaction yielding bisulfite species that, upon drying of the droplet, react with the SO₃ and H₂SO₄ acid gases to form salts that are removed from the gas. The removal of these acid gases from a flue gas reduce corrosion of equipment used in coal or oil fired power plants downstream of the injection cite.

The invention discloses a method for preparing palladium and/or antimony-doping tin oxide nano-powder. The method mainly comprises the following steps of: mixing raw materials according to the molar doping ratio of Pd<2+> and/or Sb<3+> to Sn<2+> of 0.5 to 3.5 and dropwise adding at least one of the solution of PdCl2 and the suspension of SbCl3 into the solution of tin salt with stirring to form mixed solution, wherein the raw materials comprise 0.2 to 1 mol/L solution of tin salt, 0.1 to 0.5 mol/L solution of palladium chloride (PbCl2), 0.1 to 0.5 mol/L suspension of antimony chloride (SbCl3)and 0.4 to 1 mol/L solution of alkali source; adding the solution of alkali source dropwise into the mixed solution with stirring until the pH value is between 9 and 13; stirring the solution to formprecursor suspension with a large amount of precipitate; transferring the precursor suspension to a high-pressure reactor to perform reaction for 12 to 36 hours at the temperature of between 100 and 200 DEG C and naturally cooling to room temperature to obtain a hydrothermal product; washing the hydrothermal product for multiple times by using deionized water and ethanol and detecting the productby using silver nitrate until the Cl<-> is removed completely; and drying at the temperature of between 70 and 100 DEG C to obtain the palladium and/or antimony-doping tin oxide nano-powder. The method has the advantages of simple process, environmental friendliness and suitability for industrialized production.

The invention discloses a method for preparing a pure acrylate copolymer coating emulsion for a building external wall elastic coating, including a preparation method of a seed emulsion, a pure acrylate type elastic emulsion prepared from the seed emulsion and a preparation method thereof, as well as an elastic coating prepared from the elastic emulsion added with auxiliaries, a filler and the like, wherein the ratio (by wt) of comonomers St:MMA:BMA:BA of the copolymer of the seed emulsion is (32-42):(18-27):(18-27):(12-22); the hansch constant of the polymer of the seed emulsion is 3.00-3.81 pKa; and the elastic emulsion is obtained through seed polymerization of a monomer mixture which is composed of acrylic acid (AA), acrylamide (AM), butyl acrylate (BA), methyl methacrylate (MMA) and n-butyl methacrylate (BMA) in a monomer ratio (wt) of (0.8-5):(0.8-5):(25-45):(7-33):(7-33). As the elastic coating prepared from the pure acrylate type elastic emulsion prepared by the method provided by the invention is obviously improved in properties such as stain resistance, weather fastness, low-temperature elasticity, adhesiveness, water tolerance and the like, the elastic coating can be used as an external wall decorative coating high in requirement for durability and thus can be widely applied to the field of building coating.

A process for preparing the organic aerogel and its carbon aerogel includes such steps as reaction between resorcin, formaldehyde, organic surfactant and catalyst in water, thermal solidifying to obtain organic gel, natural cooling or baking to obtain organic aerogel, and charring in inertial gas to obtain carbon aerogel.

The invention relates to a method for synthesizing nano titanium dioxide through microwaves, which comprises the following steps: (1) dissolving inorganic titanium compounds in a reaction medium to prepare a prodromic mixed solution of which the concentration of the element titanium is 0.01-0.50 mol/L; putting the prodromic mixed solution in a microwave reactor, and carrying out the microwave synthetic reaction under high pressure of 0.1-4.0 MPa in the presence of microwaves, wherein the frequency of the microwaves is 2-3 GHz, the reaction time is 5min to 1h, and the temperature is 100-250 DEG C; and (2) separating the obtained solid-liquid mixture, taking the solid, washing and drying. The obtained nano titanium dioxide has the advantages of small particle size, favorable dispersivity, ordered crystalline structure, favorable photoluminescence and photocatalysis performance, high photoelectric transformation efficiency and simple preparation method.

The invention discloses a method for preparing aluminum oxide ceramic fibers. Spinnable precursor sol is prepared by aluminum oxide solution containing Al 13 and silica sol, gel fibers are prepared through the blowing and spraying fiber forming technology, and the aluminum oxide ceramic fibers with the diameter of 1-7 mum are further obtained through heat treatment. A sol system prepared through the sol-gel method is stable, the content is controllable, and impurities are few. The ceramic fibers after heat treatment are good in flexibility, excellent in operability and free of slag balls. The method can be used in a reinforcing body in a composite material and improve the strength, heat resistance and the like of the material.

The invention discloses a method for preparing an inorganic aromatic nano-antibacterial agent and antibacterial fabrics. The method for preparing the inorganic aromatic nano-antibacterial agent comprises the following steps: swelling Carbomer resins with surfactants in deionized water, adjusting the PH value to 6.0-7.0 with triethanolamine and forming a stable colloid emulsion; and adding reducing polymers and a silver salt to the colloid emulsion and adding small molecular reducing agents for reduction at 5-100 DEG C in order to improve the purity of silver, thus obtaining the nano silver antibacterial agent. The antibacterial agent is used for padding or soaking the fabrics and the prepared antibacterial fabrics have the characteristics of fast antibacterium, high efficiency, broad spectrum and durability. The preparation methods and the finishing process have the advantages of simpleness, low cost, no pollution and easiness in industrialization.

The invention relates to a nanometer grade essence perfume manufacturing method. The manufacturing material is mixed by perfume, surfactant, and cosurfactant, composite emulsifying agent, water, and option component in proportion. The option component includes thickener, antioxidant, stabilizer, antiseptic, and colorant. Its manufacturing method includes the following steps: adding oil phase into water phase to form start emulsifying; distributed processing; its parameters are as follows: room temperature low adjusting pressure is 550kg/cm²-2500kg/cm²; time is 2-100min; number of times are 1-10. The formed nanometer grade essence perfume has good retention capability, persistence, and stability. The retention time can reach 2-3 times of material retention time. Fragrance can release over 200 days. It can be extensively applied ton weaving, paper-making, printing, and building materials fields, and so on.

The invention discloses a method for generating biogas through intensified hydrolysis and anaerobic digestion of municipal domestic organic refuse. The method comprises the following steps of: reducing the gain diameter of the municipal domestic organic refuse to below 1 cm; placing the pulverized raw materials into a raw material regulating pool and adding water or digestive liquid into the pool to adjust and control the solid concentration of the raw materials to be below 15 percent; conveying the raw materials with adjusted solid concentration to a heating hydrolyzing pond to preheat the raw materials; pumping the heated raw materials into a medium-temperature anaerobic digestion reactor to perform medium-temperature anaerobic digestion; after the medium-temperature anaerobic digestion is finished, conveying the raw materials to a superhigh temperature intensified hydrolysis reactor; after the intensified hydrolysis, conveying the raw materials to a high-temperature anaerobic digestion reactor; after the high-temperature anaerobic digestion is finished, conveying the raw materials to a sedimentation tank, wherein the temperature of the sedimentation tank is natural temperature; and after the sedimentation, conveying the digestive liquid on the upper part in the tank to a digestive liquid storage pool. The process operation and management are simple; the organic matter removing rate and gas generating rate of the raw materials are high; and pathogenic bacteria in the refuse can be removed completely.

A coated spherical Li-rich cathode material comprises a main phase Li-rich cathode material, wherein the main phase Li-rich cathode material is uniformly coated with a coating phase; the general formula of the main phase Li-rich cathode material is xLi2MnO3*(1-x) LiMO2, and x is larger than zero and smaller than one; the coating phase is a carbon layer; the mass ratio of a main phase to the coating phase is 1:(1%-12%); and the average particle diameter of a primary particle of a nanoscale Li-rich cathode material is 20-60 nm, and the average particle diameter of the coated spherical Li-rich cathode material is 1-15 mu m. A preparation method of the coated spherical Li-rich cathode material comprises steps as follows: step one, the primary particle of the nanoscale Li-rich cathode material is prepared with a sol-gel method; and step two, the coated spherical Li-rich cathode material is prepared.

A amidoamine composition containing oligomeric amidoamine compounds having the structure: the average of x based on the amidoamine composition is at least 0.2, and Z is the residue of a polyoxyalkylene polyether polycarboxylic acid compound, and the amidoamine composition is the reaction product of primary polyamine compounds with polyoxyalkylene polyether polycarboxylic acid compounds at a corresponding equivalent weight ratio of at least 4.0:1 under oligomeric reaction conditions effective to increase the amine nitrogen equivalent weight of the amidoamine composition by at least 10% over the average acid equivalent weight of said polyoxyalkylene polyether polyacid composition. There is also provided glycidated amidoamine compositions used as epoxy functional surfactants, and the aqueous epoxy resin dispersions thereof, and the curable epoxy resin compositions thereof.

The invention provides a method for preparing spinel lithium titanate used for the negative electrode materials of lithium ion batteries, which comprises the following steps of: mixing compounds of metatitanic acid and lithium according to an atomic ratio of lithium to titanium between 0.8 and 0.88; adding into carbon or powder former body of the carbon; carrying out an even mixing for 5 to 72 hours in a medium and then drying the mixture; carrying out treatment for 2 to 20 hours under the temperature between 200 and 500 DEG C; then synthesizing for 2 to 72 hours under the temperature between 600 and 900 DEG C, to acquire spinel-structure lithium titanate for the negative electrode materials of the lithium ion batteries. Adopting the cheap metatitanic acid as the raw materials and adding into the carbon or powder former body of the carbons, the method for preparing spinel lithium titanate for the negative electrode materials of the lithium ion batteries realizes the synthesis of spinel-structure lithium titanate with grains diameter less than 500 nanometers under lower temperatures and greatly improves the rate capacity, while the traditional high-temperature solid state method, with a sintering temperature generally between 800 and 100 DEG centigrade, only produces larger lithium carbonate particles at micron levels. With simple technique and strong operability, the method for preparing spinel lithium titanate for the negative electrode materials of the lithium ion batteries is easy to realize large-scale production.