720results about How to "No agglomeration" patented technology

The invention discloses a hydrothermal synthesis method of lithium-ion battery anode material of lithium iron phosphate, relating two kinds of metal phosphate. The steps are as follows: lithium source and phosphorus source are dissolved in water or mixed with water, and added into the reaction autoclave, the quaternary cationic surfactants and the alkylphenols polyoxyethylene ethers nonionic surfactant is also added into the reaction autoclave, the air in the dead volume of the autoclave inside is purged by the inert gas, the autoclave is sealed and heated to 40-50 DEG C with stirring, a feed valve and an exhaust valve are opened, pure ferrous salting liquid is added into the autoclave, and then the autoclave is sealed for the reaction of the material at 140 to 180 DEG C for 30 to 480 minutes; the mixture ratio of the invention is set as follows: the molar ratio of Li, Fe and P is 3.0-3.15:1:1.0-1.15, and then the resultant is filtered, washed, dried and carbon-coated, thus the lithium iron phosphate is obtained. The lithium iron phosphate which is produced by the invention has the advantages that: the electrochemical performance is excellent, the particle size distribution of which the D50 is between 1.5 um to 2 um is even, the phase purity is above 99 percent and the electronic conductivity of the material is improved.

The invention discloses a method for preparing nano copper conductive ink, which can be applied in the field of printing electronic technology, in particular ink jet printing technology. The preparation method comprises the following steps of: dissolving copper salt and protective agent into a solvent, heating and stirring the solution, adding a small amount of alkali solution to adjust the pH ofthe solution to between 7 and 10, dripping a reducing agent into the solution, continuously stirring the solution to react for 30 to 60 minutes, and then cooling the reaction solution to room temperature to obtain nano copper dispersion; performing centrifuging, washing and vacuum drying at room temperature on the nano copper dispersion to obtain nano copper granules; and dispersing the nano copper granules into an organic solvent, and ultrasonically treating the solution to obtain the nano copper conductive ink. The method solves the problems of complex preparation process and long preparation period in the prior art, has the advantages of simple and convenient operation, low production cost, short flow and no harmful waste generation, and realizes the goals of environmental protection and economy; and the prepared nano copper conductive ink has good dispersion property and high stability.

The invention discloses a method for preparing a hydroxyapatite/nano silver antibacterial composite coating through pulse electrochemical deposition, which comprises: using a calcium salt, phosphate, silver nitrate and a proper amount of coordination agent to prepare electrolyte with certain concentration and pH value, and performing electrodeposition in a electrolytic cell provided with a three-electrode system; taking a saturated calomel electrode as a reference electrode, a platinum sheet as a counter electrode and biological medical metal to be coated as a working electrode, wherein the pulse high electric potential is 0 volt, the pulse low electric potential is -2.0 volts, the pulse width is 100 seconds, and the deposition time is 2 hours; and depositing compositions in the coating on a base material in a mode of ions, uniformly dispersing nano silver generated during deposition in the composite coating, and finally preparing the hydroxyapatite/nano silver antibacterial compositecoating.

The invention provides a preparation method of aqueous aluminum silver paste. The preparation method comprises the following steps of: 1, adding an aluminum powder pigment and acetone into a vessel, stirring and filtering to obtain washed aluminum powder; 2, adding the washed aluminum powder obtained in the step 1 into an alcohol solvent, ultrasonically dispersing, adding into a reaction vessel, adding organic silicon, stepwise adding ammonia water, abnd stirring to make the mixture react 3, filtering the product obtained in the step 2 and drying in a vacuum drying box; 4, adding the product obtained in the step 3 into an acetone solution of a comb-like polymer comprising an anchor group and a hydrophilic group and stirring; and 5, removing the acetone from the product obtained in the step 4 by decompressing and distilling to obtain the aqueous aluminum silver paste. According to the preparation method of the aqueous aluminum silver paste, coating completeness is enhanced, falling, dusting and agglomeration of a coating are prevented, and the coating has high dispersity, so that the using performance of the prepared aqueous aluminum silver paste is integrally enhanced.

The invention discloses lithium battery positive electrode slurry. The lithium battery positive electrode slurry is a mixture of a positive electrode material and an organic solvent. The positive electrode material is composed of, by mass, 60-97% of a positive electrode active material, 1-30% of a binding agent, 0-10% of a conductive agent, 1-5% of a conductive reinforcing agent and 0.1-3% of a dispersing agent. A lithium battery prepared by the lithium battery positive electrode slurry provided by the invention has the advantages of excellent high temperature performance, high capacity conservation rate, good cycle performance, long service life and the like. The invention also provides a preparation method of the lithium battery positive electrode slurry, enabling solid materials such as the conductive reinforcing agent to be distributed in the organic solvent uniformly and stably and to be directly stirred and mixed in a common stirring apparatus, so that the operation is convenient and the method can realize large-scale production.

The invention discloses a carbonization method for preparing nano calcium carbonate. The carbonization method comprises homogenate, pressurization, primary carbonization, homogenization and secondary carbonization. The carbonization method is characterized in that refined calcium hydroxide slurry passes through the position of a nozzle of a specially made venturi tube reactor through a strong-force pump, atomization is regulated by adjusting the bore diameter of the nozzle and the water outlet speed of the strong-force pump, the atomized slurry and adsorbed kiln gas which is carbon dioxide instantly undergo a primary carbonization reaction, primary carbonization liquid undergoes a secondary carbonization reaction in an intermittent type reaction kettle, multiple circulating carbonization reactions are achieved under the effect of the strong-force pump, and nano calcium carbonate is obtained by cladding treatment. The specially made venturi tube reactor is used, the kiln gas is led in without needing an air compressor, the temperature is always maintained at a stable level in the carbonization process, and product quality is guaranteed. Device investment for the method is small, a process is easy to control, and the carbonization method is suitable for industrial production and has good economic benefit and social benefit.

The invention provides a preparation method of graphene, which belongs to the technical field of synthesis of graphene and nano materials. The graphene is prepared by utilizing graphite oxide as a raw material and adopting environmental-friendly tea polyphenol/green tea juice as a reducing agent through a chemical reduction method without adding any stabilizing agent/dispersing agent. A graphene aqueous solution prepared by the invention has favorable dispersibility and stability without settling after standing for several months or generating an agglomerating phenomenon. The preparation method provided by the invention has advantages of simple process, easy popularization, low cost of the selected reducing agent, environmental protection and adaption of the requirements for low cost, large scale and green production. Any organic stabilizing agent/dispersing agent is not added in the process of preparing the graphene, which is beneficial to the following application of the graphene; and the adopted reducing agent and a reduzate which are environment-friendly have biocompatibility, and the prepared graphene is expected to be applied to the field of biochemistry.

The invention discloses a method for preparing hydroxylapatite/chitosan composite coat by electrochemical deposition. The method comprises the following steps: preparing electrolytic solution with certain concentration and pH value from calcium salt, phosphate and chitosan; carrying out electrodeposition in an electrolysis bath with a three-electrode system; using a saturated calomel electrode as a reference electrode, a platinum plate as a counter electrode, and biomedical metal to be coated as a working electrode; depositing compositions in the coat on a base material in ion mode for 25 minutes, with minus 1.2 volts of high pulsing electric potential, minus 2.0 volts of low pulsing electric potential, 100s of pulse width, and evenly dispersing the chitosan in a composite coat, so as to finally produce the evenly hybridized hydroxylapatite/chitosan composite coat.

The invention relates to a high-dispersivity nanometer PEDOT (poly (3,4-ethylenedioxythiophene)). The average diameters of granules contained in the polymer are 50 to 500nm, and dispersion parameters Di of the granules are 0.1 to 10nm/d. Furthermore, the invention also relates to a method for preparing the nanometer polymer, which uses organic acid containing fluorine and/or surface active agents of salts thereof as doping agents, and nanometer PEDOT is obtained through a self-assembly chemical oxidation polymerization method. The method successfully solves the agglomeration problem of PEDOT nanometer materials, which is characterized by simple operating process, low cost and being prone to industrialized implementation. Finally, the invention also relates to the application of the nanometer PEDOT in the aspects of electrode materials for producing electronic device, electroluminescence or electrochromism materials, static-free materials, electromagnetic shielding materials, wave-absorbing materials, corrosion protection materials and conductive fiber.

The invention belongs to the field of auxiliary materials for smelting steel, in particular to a covering slag for a pre-melting continuous casting crystallizer. The weight percentage components of the covering slag are as follows: 31 to 36 percent of SiO2, 30 to 35 percent of CaO, 2 to 5 percent of MgO, not more than 1.5 percent of Fe2O3, 2 to 5 percent of Al2O3, 8 to 11 percent of Na2O, 5 to 8 percent of F, 0.8 to 1.5 percent of Li2O, 3 to 6 percent of C and the rest are unavoidable impurities. The covering slag has a good liquidity and spreadability, can uniformly cover the surface of molten steel, has no piling phenomenon, and has the advantages of active slag surface, uniform melting and no caking phenomenon. The invention has a better insulating performance and has no cold steel agglomerated on the liquid surface; can ensure a casting blank to be fully lubricated so as to realize a high pulling rate; has a stable performance after absorbing the impurities and can realize stable and smooth continuous manufacture; avoids the steel leakage phenomenon, improves the casting blank quality and can lead the longitudinal crack of a plate blank and the angle part cross crack to be reduced by more than two third averagely; the invention has a low cost and is convenient for popularizing.

The invention discloses a method for preparing high-concentration nano silver monomer dispersion liquid. A nano silver stabilizer, a silver source and a silver ion complexing agent are dissolved in water in sequence, and a reducing agent is added after stirring is carried out for a certain period of time; and stirring continues, the mixture stands and ages, and the target high-concentration nano silver monomer dispersion liquid is obtained. According to the method, the high-concentration nano silver monomer dispersion liquid is obtained at low temperature through the very moderate polyol weak reducing agent rather than a strong reduction reaction. The size of nano silver particles prepared through the scheme ranges from 5 nanometers to 10 nanometers, the nano silver particles have monodispersity, and the agglomeration phenomenon is avoided. The antibacterial liquid has the characteristics of being high in stability, high in antibacterial rate, wide in antibacterial range and the like. The preparation method is easy and convenient to operate, the parameter adjustment range is wide, energy consumption is low, the period is short and the method is suitable for scale-up and industrial big production.

The invention relates to a biological mud degrading and denitrogenating treating device and the operating method thereof, belonging to environmental protection field, especially relating to a device of strengthening predation of food chain of microbical ecosystem to degrade biological mud and denitrogenating in high performance and the operating method thereof, where the treating device comprises multistage contact oxidation tank, solid-liquid separation settling tank, and anaerobic hydrolyzing tank. And the peculiar propreties of spiral biological carriers in the multistage contact oxidation tank and the flexbilly controllable per-tank substrate concentration and oxygen supply conditions offer various microbes appropriate growth environments, thus composing an ecosystem with a food chain of bacilli, protozoans, metazoans, and senior micro animals. By the food chain, at the middle and rear stages of the multistage oxidation tank, higher microbes can largely prey on the residual mud with bacilli and other lower microbes as the main, thus largely reducing the residual mud.

The present invention relates to a preparation method for organic-inorganic hybrid materials through grafting polymerization-environment responsive macromolecules on the nanometer silicon dioxide surface, belonging to the organic-inorganic hybrid materials synthesis and preparation field. The present invention takes advantage of the action of silicon dioxide with hydroxyl on the surface with the silane coupling agent 3-amino-propyl silane to enable the end to be of an amino group; then the product reacts with the nanometer particle generated from the bromination propionyl bromine reaction; The end of the nanometer particle is the ATRP initiator; finally, the polymerization of the environmentally-responsive macromolecules on the nanometer silicon dioxide surface is initiated in the present of CuBr and PMDETA so as to obtain the target product. The graft rate of the silicon dioxide virgule environmentally-responsive macromolecule core-shell structure nanometer hybrid particles is 60 percent to 70 percent. No reunion of the nanometer hybrid particles appears. The nanometer hybrid particles are uniformly dispersed with environmental responsiveness.

The invention relates to a preparation method of HPEI (hyperbranched polyethyleneimine)-encapsulated ferroferric oxide magnetic nano particles, comprising the steps of: adding Fe source to ultrapure water, then adding NH3.H2O, stirring in air, adding HPEI, and reacting at 134-140 DEG C for 3h, wherein the mass ratio of Fe source to HPEI is 1-5 :1; cooling, and carrying out washing and magnetic separation on precipitate to obtain HPEI-encapsulated ferroferric oxide nano particles Fe3O4/HPEI; and then carrying out different surface modification on the Fe3O4/HPEI nano particles, such as polyethylene glycolation (PEGlation), acetylation and carboxylation, so as to increase biocompatibility of the nano particles to be used for MRI (magnetic resonance imaging) diagnosis. The process is simple, the reaction conditions are mild and operation and separation are easy; and the prepared iron oxide magnetic nano particles have excellent biocompatibility and T2 relaxation effect, and have potential application value in the field of MRI imaging diagnosis.

The invention relates to a preparation and application of a new macromolecule lipidosome. The structure is a vesicle which has a lipide dual-layer structure containing duoparental chitosan longchain alkyl quaternary ammonium salt as well as phospholipid with micromolecule. The chitosan longchain alkyl quaternary ammonium salt is characterized in that: the weight average molar mass is bigger than 2000; the chitosan longchain alkyl quaternary ammonium salt can be dissolved in chloroform and other organic solvent, which contains carboxyl, amino or quaternary ammonium salt radical and concretely is one of the duoparental chitosan longchain alkyl quaternary ammonium salt disclosed by 200710056993.4 of China Invention Patent. The surface of the macromolecule lipidosome can be connected with various Liver-Targeted preparations. The macromolecule lipidosome can carry water-soluble, oil-dissolving or duoparental materials including medicine, protein, gene, nutrition, vitamin, magnetic granule and quantum dot, etc. The macromolecule lipidosome has the advantages of high wrapping rate, simple and convenient operation, strong applicability and low cost; the macromolecule lipidosome after being covered has even distributed granule diameter which can be lower than 20nm for the smallest, has stable system and strong functions for carrying medical tiny balls and slowly controlling as well as releasing.

The invention relates to a preparation method of a visible light catalyst with a surface plasmon effect and application thereof. The active component of the visible light catalyst is a precious metal Au, and the carrier is one of TiO2, CeO2, Nb2O5, SiO2, Ta2O5, Al2O3 and ZrO2, wherein, Au accounts for 0.2-5% in mass content, and the particle size of Au particle is 2-20nm. Preparation of the catalyst consists of two steps: the first step is to prepare a carrier; the second step is to prepare an Au/TiO2 (CeO2, SiO2, Al2O3, Nb2O5, Ta2O5, ZrO2) visible light catalyst with a plasmon effect througha sol precipitation method. Au nanoparticles prepared by the method of the invention have good dispersibility, easily controllable size, high active component utilization rate, as well as the effect of high efficiency photocatalytic degradation of organic pollutants by visible light.

The invention relates to the technical field of dispersed dyes. In order to solve the problem that the dyes having a 2,4-dinitraniline structure are all poor in light fastness, the invention provides a dispersed dye mixture which is prepared by the step of mixing component A and component B, wherein the weight percentage of the component A is 10-92%. The 2,4-dinitraniline is used for synthesizing the dye so that the big problem which is always evaded in the industry is solved in a compounding and synergic way; as a result, a dye composition which is good in deep dyeing effect and excellent in light fastness can be obtained while the cost of the color matching dyes is greatly reduced.

The invention discloses epoxy resin silica sol which is characterized by being prepared from the following components: epoxy resin, organic silicon, silane coupling agent, organic solvent and ammonia water at a molar ratio of 1:(0.1-2):(0.01-2):(0.9-18):(0.001-0.06). The invention also discloses a preparation method of the epoxy resin silica sol. The invention also discloses an epoxy resin organic-inorganic nano hybrid material adopting the epoxy resin silica sol, which is characterized in that the epoxy resin curing agent is one or more of methylhexahydrophthalic anhydride, methylhexahydrophthalic anhydride acid, 4,4-diaminodiphenylmethane and 4,4-diamino diphenyl sulfone. The invention also discloses a preparation method of the epoxy resin organic-inorganic nano hybrid material. The product provided by the invention has excellent insulating property, and the method is stable and efficient.

The invention relates to a method for preparing a complex antimicrobial agent by blending chitosan and silver copper. The method comprises the following steps: silver nitrate and cupric nitrate are blended according to the concentration ratio of 1:30 to 1:80, and then are blended with chitosan. Therefore, a light blue antibacterial agent powder is prepared. According to the method provided by the invention, the usage amount of silver is reduced, the chitosan is also used as a reducing agent, chemical reagents are no longer added, and the toxicity of an antibacterial agent is reduced. Due to the change of technological conditions, the oxidation-reduction reaction of the chitosan and the cupric nitrate can be performed sufficiently, an aldehyde group (-CHO) is generated in the reaction, Ag<+> is enabled to be completely reduced to elemental silver, Cu<2+> is hibernated in a chitosan basal body, so as to play a synergistic antibacterial effect, a remarkable inhibiting effect on escherichia coli and staphylococcus aureus is detected through an inhibition ring test, an inhibition ring which is equal to or greater than 10 mm is formed under a culture condition of 37 DEG C, a remarkable bacteriostatic effect is played, materials used cause no harm to human body, the price is low, and the novel complex antimicrobial agent is green and environment-friendly.

The invention discloses a Pd/metal-organic framework compound catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing MIL-100(Fe) in an ethanol-water mixed solution, adding polyvinylpyrrolidone and H2PdCl4 under continuous stirring, and performing reflux with an oil bath for 3 h at 90 DEG C so as to obtain the Pd/MIL-100(Fe) composite material, wherein during the process, Pd(2+) can be reduced by ethanol gradually. According to the invention, a simple and mild method for reducing precious metal by ethanol is adopted, high-dispersity precious metal Pd nano-particles grow on MIL-100(Fe) with a super-large specific area, and in the whole process, inert atmosphere, a strong reducing agent and heat treatment process are not required. The prepared Pd nano-particles are good in dispersity, and high in utilization ratio, and have the property of efficiently degrading medicines, personal care products or dyes in the water environment through photocatalysis at the room temperature.

The invention provides a health-care product for reducing blood sugar and blood pressure, relaxing bowels, losing weight, resisting fatigue and improving sexual function. The product comprises okra, pollen pini, tartary buckwheat, medicinal yam, soy isoflavone, soyasaponin and 10 parts of additional component, wherein the additional component comprises xylitol, mannitol crystal and natural menthol in a ratio of 1: 1: 1. The product is produced by the following steps of: 1, weighing the components in the ratio, and crushing in an ultrafine crusher to obtain powder of 200 meshes for later use; stir-frying the tartary buckwheat; and 2, weighing the additional component in a powder shape according to the proportion, mixing the powder, stirring uniformly, drying at the temperature of 60 DEG C under reduced pressure, sterilizing, thus obtaining a semi-finished product of the health-care product for reducing the blood sugar and the blood pressure, relaxing the bowels, losing the weight, resisting the fatigue and improving the sexual function, and preparing granules, pills, tea bags, solid granules, liquid beverage, tablets, effervescent tablets, biscuit or thick soup from the semi-finished product of the health-care product or adding the semi-finished product into capsules to prepare capsules facilitating carrying.

The invention provides a selenium-enriched five-cereal nutritional instant powder and a preparation method thereof, not only realizes the preparation of instant composite coarse cereal powder under the no addition condition, and has the advantages that the product taste is fine, has the fragrance of puffing coarse cereals, the selenium quantification can be realized, and the product is suitable for demands for selenium supplementation of crowds with selenium deficiency. The five-cereal nutritional instant powder rich in selenium comprises selenium-enriched rice and various cereals as well as auxiliary materials, can be selenium-containing hair nourishing brain strengthening nutrient powder, selenium-containing children's nutrient powder, selenium-containing blood and qi nourishing nutrient powder or selenium-enriched liver nourishing and protecting nutrient powder. The preparation method comprises the steps of soaking fresh five cereals taken as raw materials, mixing the soaked five cereals and water, drying and smashing to obtain five-cereal powder; mixing the five-cereal powder and ethyl alcohol to prepare soft material, then carrying out granulation to obtain five-cereal instant particles; and drying the five-cereal instant particles to obtain the five-cereal instant powder. The preparation method for the five-cereal nutritional instant powder is simple, the obtained five-cereal instant powder is easy to dissolve, the instant time is less than 20 seconds, and the agglomeration probability is low.

The invention provides a preparation method for a high-strength high-density isotropic impregnation silver carbon/graphite composite material and is aimed at providing a preparation method for a stable high-strength long-service-life carbon graphite material. According to the technical scheme, firstly, a carbon graphite substrate material matched with impregnation silver is prefabricated, and an isotropic graphite material substrate is prepared through an isostatic pressing forming method; then the isotropic graphite material substrate reaches performance parameters matched with an impregnation silver process through continuous impregnation, roasting, impregnation angle changing and other processes; and afterwards silver is impregnated under the circumstances of high temperature and high pressure, so that the silver penetrates the network structure of the carbon graphite substrate, and the high-strength long-service-life carbon graphite/ silver composite material with carbon graphite as the substrate is formed. According to the preparation method, the mechanical strength of the carbon graphite/ silver composite material can be significantly improved; the carbon graphite/ silver composite material is good in friction coefficient, thermal conductivity, radiation resistance and low in abrasion loss, and the requirement for the service life of the material above 60 years is met.