104results about How to "Facilitate the realization of industrialized mass production" patented technology

The invention relates to a preparation method of nano tungsten trioxide powder, and belongs to the field of powder metallurgy technology. The method comprises the following steps: heating a saturated ammonium tungstate solution till 65-70 DEG C, then adding ammonium chloride, tartaric acid, ethylenediamine tetra-n-propionic acid and diethanol amine respectively in sequence, keeping stirring during the adding process till being dissolved completely and continuously stirring for 1-2h; then adding nitric acid under the condition of keeping stirring to form tungstic acid gel; then putting the gel in a heating furnace for drying at 140-150 DEG C, then warming up till 340-380 DEG C for calcination, and finally ball-milling and smashing to obtain the nano tungsten trioxide powder with the average particle size of 23-28 nm. The method disclosed by the invention is mild and stable for reaction process and easy to control, prepared nano tungsten trioxide is thin and uniform in particles and high in powder purity. Moreover, the process is simple and easy to control, so that the industrial production investment is few, the production technology is simple and convenient, the production cost is low, and industrial large-scale production is convenient to realize.

The invention relates to high-performance gamma-Fe2O3 magnetofluid and a preparation method of the high-performance gamma-Fe2O3 magnetofluid, and belongs to the technical field of nanoscale science and technology and material preparation. The preparation method is characterized in that magnetic nanometer particles are prepared through a chemical coprecipitation method, after ferrous salt solutions and ferric salt solutions are evenly mixed, superfluous alkaline solutions are added till complete reaction is finished, then moderate surfactants are added and surface modification treatment is conducted, and finally the magnetic nanometer particles are obtained after sediment is conducted; after the magnetic Fe3O4 nanometer particles are cleaned and dried, the gamma-Fe2O3 magnetic particles are obtained after the cleaned and dried gamma-Fe2O3 magnetic particles are subjected to oxidation at a certain temperature in a certain time period; quantitative surfactants and carrier liquids are added to a gamma-Fe2O3 magnetic particle solution , dispersion is conducted, and the high-performance gamma-Fe2O3 magnetofluid is obtained. The high-performance gamma-Fe2O3 magnetofluid prepared through the preparation method is simple in process and high in specific magnetization, and industrial batch production can be achieved conveniently.

The invention belongs to the technical field of medicine, and relates to a preparation method and application of tanshinone II A solid dispersion pellets. The in-vitro dissolution rate of the tanshinone II A solid dispersion pellets prepared by a fluidized bed one-step molding process is remarkably increased, and bioavailability is remarkably improved; and the process is convenient to operate, feasible, high in production efficiency and low in cost, and industrial production is easy to realize.

The invention discloses a Cu-Ni-Al-Ce porous alloy and a preparation method thereof. The porous alloy comprises the following components in percentage by mass: 25%-35% of Ni, 10%-15% of Al, 2%-4% of Ce and the balance of Cu. The preparation method comprises the following steps: (1) heating Cu, Ni, Al and Ce to a molten state so as to obtain Cu-Ni-Al-Ce alloy liquid; (2) carrying out atomization and pulverization on the alloy liquid to obtain Cu-Ni-Al-Ce atomized powder; (3) sending the atomized powder into an atmosphere sintering furnace for high-purity hydrogen gas reduction; (4) carrying out hot pressed sintering on the reduced and atomized powder, so as to obtain the Cu-Ni-Al-Ce porous alloy. The Cu-Ni-Al-Ce porous alloy disclosed by the invention has the advantages of uniform chemical components and high alloy purity, and better high-temperature compression property and high-temperature creep resistance at a relatively-high porosity. The preparation method has the advantages of simple process and low cost.

The invention relates to a core-shell structure nanometer composite particle as well as a preparation method and a preparation device thereof. The preparation method comprises the following steps of using a fluidized bed chemical vapor deposition method; respectively obtaining core materials and shell materials in a way of controlling the temperature region distribution in a fluidized bed reactorand a precursor steam inlet; realizing in-situ coating; obtaining the core-shell structure nanometer composite particle. The prepared core-shell structure nanometer composite particle has the advantages that the coating between the core and the shell is uniform; the particle shape and dimension are controllable; various function coupling of the material can be realized; the core-shell structure nanometer composite particle is applied to the fields of biological medicine, electronic and semi-conductors, luminescence, catalysis and the like. The technical flow process is simple; the operation ofthe process is convenient and fast; the cost is low; the industrial production can be favorably realized.

The invention relates to a titanium carbide in-situ-growth CNTs three-dimensional composite material with carbon microspheres being transition layers and a preparing method thereof. The method comprises the steps of dispersing Ti3C2 nano powder into ultrapure water, then adding glucose after uniformly dispersing Ti3C2 nano powder, stirring the mixture for 5-30 min, and afterwards conducting a hydrothermal reaction to obtain a Ti3C2 @C composite material; adding the Ti3C2 @C composite material into the ultrapure water, then adding Co(NO3)2.6H2O into the ultrapure water after uniformly dispersing the Ti3C2 @C composite material, and stirring the mixture for a reaction for 2-6 h; then adding urea after the reaction is over, and conducting continuous stirring at a constant temperature to evaporate moisture to obtain precursor powder; conducting thermal treatment on the precursor powder to obtain the titanium carbide in-situ-growth CNTs three-dimensional composite material with the carbon microspheres being the transition layers. According to the titanium carbide in-situ-growth CNTs three-dimensional composite material with the carbon microspheres being the transition layers and the preparing method thereof, carbon nano tubes are grown on the surface of Ti3C2, the carbon nano tubes are utilized to provide an electron transferring channel, and thus the electric conductivity of the material is increased.

The invention provides a progesterone ethosome. Progesterone is encapsulated in an ethosome. The progesterone ethosome comprises the following components in percentage by weight: 0.1 to 1 percent of progesterone, 1 to 8 percent of lipid materials, 0 to 0.6 percent of cholesterol, 20 to 50 percent of short-chain alcohols, 0 to 3 percent of nonionic surfactant and the balance of water. The preparation method comprises the following steps of: mixing and dissolving the progesterone, the lipid materials, the cholesterol and the short-chain alcohols to prepare an alcohol phase; with stirring, adding the alcohol phase into a nonionic surfactant-containing aqueous phase to prepare primary emulsion under the condition of stirring; homogenizing the primary emulsion under a high pressure to obtain asuspension; stirring the ethosome suspension for 15 to 30 minutes to perform emulsification for the second time; and curing the suspension by cooling the suspension at 0 to 4 DEG C to obtain the progesterone ethosome. Because the high-pressure homogenization method is adopted to prepare the progesterone ethosome, the progesterone ethosome is low in stimulation to skin and high in transdermal delivery ability, and metal ion pollution which is easy to cause by the probe ultrasound method of the traditional homogenization method is avoided. Therefore, the progesterone ethosome is suitable for industrial production. The progesterone ethosome can be prepared into a transdermal drug delivery system, a mucosal drug delivery system, and topical dosage forms, such as a paster, a gel and the like. The progesterone ethosome is mainly applied to hormone replacement therapy, secondary amenorrhea, functional aplastic bleeding, premenstrual syndrome and the like clinically.

The invention relates to a new one-pot preparation method of vitamin B6. The method includes that 5-ethoxy-4-methyloxazole which is a key intermediate of vitamin B6 and dimethyl maleate or diethyl maleate are subjected to Diels-Alder addition reaction and aromatization to further form pyridine rings, and then the pyridine rings undergo hydrogenation to be catalytically reduced to vitamin B6. The one-pot method is adopted, so that the intermediates can directly react without separation. The period of technological processes is shortened, and the one-pot preparation method of vitamin B6 is simple in operation, environment-friendly and low in cost. Moreover, the selectivity, the yield and the purity of the product are high, and the method is more suitable for being used for large-scale industrial production.

The invention relates to a perovskite solar cell and a preparation method thereof. By adding an appropriate amount of polyvinyl alcohol (PVA) into a precursor liquid, the thin film morphology of a perovskite layer is improved, the service lifetime of a photo-induced carrier is prolonged, and the photoelectric conversion efficiency of the cell is effectively improved; due to the water absorption performance of the PVA, the humidity stability of the material is also substantially improved by appropriate addition, so that long-term and stable-efficiency output of the perovskite solar cell in a high humidity environment is maintained; and meanwhile, such type of a water soluble polymer material which is used is low in cost, and large-area application of the cell is facilitated.

The invention discloses semi-artificial feed of red weevil, and a preparation method of the semi-artificial feed. The semi-artificial feed comprises the following components of Washington palm leaf stalk fiber powder, choline, mixed vitamin liquor, agar, cane sugar, casein, yeast powder, corn flour, inositol, vitamin C, cholesterol, choline chloride, microcrystalline cellulose, potassium sorbate, sodium p-hydroxybenzoate, webster salt, mixed vitamin liquor and distilled water. According to the semi-artificial feed of the red weevil and the preparation method of the semi-artificial feed, the Washington palm leaf stalk fiber powder is selected from a Washington palm leaf stalk; a source of a raw material is convenient and easy to obtain; the semi-artificial feed is applicable to mass production; the mixed vitamin and choline contribute to absorption and conversion of the red weevil, so that a breeding period is shortened significantly; and the microcrystalline cellulose has a good emulsifying effect, and has a very important role in keeping the stability of the semi-artificial feed of the red weevil and uniformly dispersing the components.

The invention relates to a long linear super capacitor with high power. The long linear super capacitor comprises a conductive substrate, an active material, and a gel electrolyte. The active material is arranged on the conductive substrate through drop casting. The active material is coated by a carbon nanotube film which is coated by the gel electrolyte. The conductive substrate is a sandwich structure of sequential carbon nanotube film / silver nanowires / sequential carbon film. The active material is a GO / MCNTs complex. The gel electrolyte is a PVA / H3PO4 electrolyte. A preparation method of the long linear super capacitor comprises the steps of depositing the active material on the sandwich structure of sequential carbon nanotube film / silver nanowires / sequential carbon film, twisting to form linear electrodes, and finally preparing the long linear super capacitor through twisting by using two same linear electrodes. According to the long linear super capacitor and the method, the efficiency is high, the stability is good, the realization of industrialized production is facilitated, the axial conductivity of the long linear super capacitor is improved, and thus the power characteristic of the long linear super capacitor is improved.