146results about How to "Craft quick" patented technology

The invention belongs to the technical field of traditional Chinese medicine formula granules and particularly relates to semen armeniacae amarae formula granules as well as preparation and quality control methods thereof. The L-amygdalin and D-amygdalin ratio range considering both the curative effect and safety (low toxicity) is determined through study on the ratio of L-amygdalin to D-amygdalin in classical prescription decoction containing semen armeniacae amarae, semen armeniacae amarae formula granule extraction process parameters capable of guaranteeing the L-amygdalin and D-amygdalin ratio range are determined through process purification, high performance liquid chromatography is used for quantitative analysis in the quality control method, the amygdalin isomerization course is controlled by regulating process parameters such as decoction water amount and decoction time for semen armeniacae amarae decoction pieces during preparation, the semen armeniacae amarae formula granules meeting the quality requirement are prepared and has the same effect with classical prescriptions, and quality control of the semen armeniacae amarae formula granules is realized.

This invention relates to a method for synthesizing zeolite, which mixes a solid Si source and Al source under a high alkali condition, mixes them fully and crystallizes them in vapour to synthesize many kinds of zeolite products of silk zeolite, ZSM-5 or MCM-22, beta.

The invention relates to a preparation method of a high-graphitized nanometer carbon material. The method comprises the following steps: (1), uniformly mixing magnetic metal or metal oxide particles with a solid organic carbon precursor material, wherein the magnetic metal or metal oxide particles in the mixture account for 10 to 80 percent of the total weight; and (2) putting the mixture in a microwave oven and processing in microwave for 3 seconds or longer under the microwave power of 300W to 3000W so as to obtain carbon-wrapped magnetic metal nanometer particles or a multi-wall carbon nanometer pipe material. The prepared carbon material has high graphitization degree, controllable grain diameter and thickness, simple technology, low preparation cost, high product purity, wide selective raw material range and easy mass preparation.

The invention relates to a method for producing nano-sized vanadium carbide powder, belonging to the technical field of preparing ceramic powder. The method comprises the following processes: (1) mixing a vanadium source, a carbon source and an auxiliary into a solution according to a certain proportion; (2) heating the solution, so that the solution is volatilized, concentrated and decomposed to obtain precursor powder containing the vanadium source and the carbon source; and (3) reacting the precursor powder for 1-5 hours at the temperature of 700-1300 DEG C under certain atmosphere. The method is simple in technology, low in cost, and easy to industrialize, and the obtained vanadium carbide powder has a particle size of less than 50nm, and good dispersity.

The invention relates to a double coptis for injection as a veterinary herbal medicine compound preparation and a preparation technique as well as an application thereof. The compound preparation is made from the following parts of medicines by weight: 1250 portions to 3750 portions of honeysuckle, 1250 portions to 3750 portions of scutellaria and 2500 portions to 7500 portions of forsythia. Sustained release accessories contain 200 portions of hydroxypropyl methylcellulose and 100 portions of sodium carboxymethylcellulose. The containing of sustained release accessories can reduce injection times for large animals and the stress response of large animals. The veterinary herbal injection preparation has the functions of antiviral, antibacterial, anti-inflammatory and antipyretic analgesic effects, as well as improving immunity and the like, and can be applied to epidemic diarrhea, transmissible gastroenteritis, swine paratyphoid, septicemia caused by various diseases, cough, dyspnea, skin cyanosis, arthrocele, lameness, swine reproduction and respiratory disturbance syndrome and cow mastitis caused by streptococcosis, haemophilus parasuis infection, contagious pleuropneumonia, swine lung plague in veterinarian clinical practice.

The invention provides a long-acting antibacterial multifunctional coating based on bionic dopamine as well as a preparation method and an application thereof. The preparation method comprises the following steps: carrying out ultrasonic cleaning on a base material by using acetone, absolute ethyl alcohol and ultrapure water in sequence; immersing the obtained base material into dopamine rapid deposition liquid for reaction to obtain a base material coated with a polydopamine coating; washing the obtained base material with deionized water, and drying; soaking the obtained base material in a multifunctional coating aqueous solution for reaction, and obtaining a functional coating on the surface of the base material; washing the obtained base material with ultrapure water and then drying; wherein Cu<2+> and H2O2 are dissolved in the dopamine rapid deposition liquid, and the multifunctional coating aqueous solution contains a hydrophilic polymer or a zwitterionic polymer. The preparation process is simple, conditions are mild, deposition preparation time is greatly shortened, and the method is suitable for large-scale industrial production.

The invention discloses a method for preparing nano tungsten nitride, belonging to the technical field of powder metallurgy preparation. The method comprises the following steps: synthesizing and preparing a tungsten oxide precursor through a solution method; and nitriding the tungsten oxide precursor in ammonia gas to obtain nanocrystalline tungsten nitride powder, wherein the particle size of the powder is 30-120nm. By virtue of the method disclosed by the invention, the problems that ultrafine nanocrystalline powder can be difficultly prepared by a traditional preparation method and the preparation time is long in the traditional preparation method can be solved. The tungsten nitride powder prepared by using the method disclosed by the invention is controllable in particle size, low in cost and high in utilization rate of raw material powder and has remarkable catalytic performance.

The invention provides a method for preparing rare earth oxide doped tungsten and molybdenum spherical powder for 3D printing, and belongs to the technical field of powder metallurgy powder preparing.According to the specific preparing method, a low-temperature solution combustion synthesizing method is adopted for preparing rare earth oxide/tungsten oxide (molybdenum oxide) composite powder, then, hydrogen reduction is conducted to obtain rare earth oxide doped nano tungsten (molybdenum) powder, then, atomizing granulation equipment is used for granulating nano powder, and after the nano powder is roasted, ground and screened, the spherical tungsten (molybdenum) powder for 3D printing can be obtained. Raw materials are simple and easy to obtain, the equipment is simple, the technology israpid, a large number of products can be prepared within the short time, and the method is suitable for large-scale production. The rare earth oxide in the prepared tungsten and molybdenum sphericalpowder can be evenly scattered, particles are fine, oxide particle segregation cannot happen, and the rare earth oxide adding amount can be adjusted through the low-temperature solution combustion synthesizing process. The prepared tungsten and molybdenum spherical powder is excellent in sphericity degree and mobility and is extremely suitable for the 3D printing technology.

The invention discloses a preparation method of nano aluminium nitride powder, belonging to the technical field of nano material preparation. The preparation method comprises the following steps: preparing a solution according to a certain proportion by adopting aluminium sources, water-soluble carbon sources and assistant agents as raw materials; heating the solution, so that the solution is decomposed after being volatilized and concentrated, thus obtaining precursor powder; reacting the precursor powder in a certain atmosphere at 1200-1800 DEG C for 1-5 hours; treating the powder after reaction in the air at 500-800 DEG C for 1-3 hours, thus obtaining the nano aluminium nitride powder. The preparation method is simple in process and low in cost and can be used for obtaining the nano aluminium nitride powder which has good degree of sphericity and dispersibility and has a particle size smaller than 50nm.

The invention provides a composite type air filter screen and a preparation method thereof. The composite type air filter screen includes a primary-efficiency filter screen, a particulate filter screen and a smell filter screen; the primary-efficiency filter screen, the particulate filter screen and the smell filter screen are sequentially connected to form the composite type air filter screen; the composite type air filter screen is provided with a lifetime indicating device. The composite type air filter screen allows the primary-efficiency filter screen, the particulate filter screen and the smell filter screen to be composited and superimposed to form a composite structure with three-layer filtration, and thus the filter effect is significant; moreover, the composite type air filter screen also is provided with the lifetime indicating device, so that the purification effect and the lifetime state of the composite type filter screen can be reflected in real time, a user can determine whether the filter screen needs to be replaced according to needs, and the use effect and user experience are ensured. The preparation method of the composite type air filter screen has the advantages of simple and fast process, and convenience for mass production.

A disclosed antistatic flame-retardation circuit board comprises a circuit board main body, a sealing layer arranged on the circuit board main body, and a protective layer arranged on the sealing layer; the sealing layer fixedly seals the side, carrying electronic components, of the circuit board main body; and the protective layer wraps the sealing layer. The side, possessing soldering tin, of the circuit board main body is provided with a heat radiation layer, and the heat radiation layer and the circuit board main body are in connection by employing a mutually-matched concealed, overlapped or plug-in way; the circuit board main body is provided with a plurality of through holes, one side of the heat radiation layer is provided with a groove, the groove is filled with a heat-conduction liquid, and the heat-conduction liquid is capable of freely flowing in the groove and the through holes; and the connection position of the heat radiation layer and the circuit board main body is sealed by using pouring silica gel. The circuit board possesses excellent antistatic, moistureproof and electrical-isolation performances, also possesses the characteristics of good flame retardation, heat radiation and the like.

The invention discloses an efficient environment-friendly low-temperature composite phase change cold accumulating agent. The cold accumulating agent is prepared from the following components in percentage by mass: 5-11 percent of potassium chloride, 10-15 percent of sodium chloride, 0.1-0.6 percent of citric acid, 1-1.5 percent of sodium tetraborate, 0.5-2 percent of guar gum and 70-83.4 percent of water. The invention further discloses a method for preparing the efficient environment-friendly low-temperature composite phase change cold accumulating agent, and application of the efficient environment-friendly low-temperature composite phase change cold accumulating agent in the field of storage and fresh preservation. Compared with a traditional cold accumulating agent preparation process, the process has the characteristics of convenience and rapidness, the prepared cold accumulating agent is transparent or translucent gel, and has the characteristics of safety, no pollution, efficiency, large latent heat of phase change and small condensate depression. Experiments prove that the phase-change temperature is between minus 21 and minus 24 DEG C, and the latent heat of phase change is 280-320kJ/kg.

The invention relates to a rapid preparation method of a manganese oxide/carbon sphere composite material for three-dimensional (3D) printing. Aiming at the problems of small electrode capacity and low specific capacitance of a capacitor, the manganese oxide/carbon sphere composite material is prepared according to the steps of taking a carbon sphere as a carbon source and potassium permanganate as a manganese doping agent, preparing a solution, carrying out ultrasonic dispersing processing, synthesizing a manganese oxide/carbon sphere, carrying out washing, suction filtering and vacuum drying, and carrying out heating and sintering with vacuum microwave. The preparation method is advanced and rapid in process and accurate and full in data, a product is black powder, the particle diameter of the powder is less than or equal to 200 nanometers, the product purity reaches 99.3%, the specific capacitance index is 114F/g, the preparation method is an advanced method for rapid preparation of the manganese oxide/carbon sphere composite material, and the material can be used for a 3D printing technology.

The method relates to a method for producing carbon composite amorphous vanadium oxide powder, and belongs to the field of new energy resources. A process comprises the following steps: preparing a solution from raw materials, namely, a vanadium source, a fuel, an auxiliary and a carbon source, according to a certain proportion; heating the solution in a certain atmosphere, and performing combustion synthesis reaction after the solution is volatilized and concentrated to form gel; self-maintaining the reaction to finally obtain the carbon composite amorphous vanadium oxide powder by virtue of heat released by combustion reaction. A large amount of gas is generated in a reaction process, so that not only can a powder product be effectively prevented from being agglomerated, but also a mesoporous structure can be formed. A liquid phase mixing manner is adopted, so that amorphous vanadium oxide granules with small granularities can be closely combined and uniformly dispersed with carbon. The raw materials are readily available, the method is simple, low in cost and high in industrialization rate, and the prepared carbon composite amorphous vanadium oxide powder has high capacity and high cyclic stability when being used as an anode material for a lithium battery.

The invention belongs to the technical field of resource utilization and recovery, and in particular, relates to a pyrochlore concentrate obtaining method. The method comprises the following steps: ores containing pyrochlore are grinded; the ores are separated by using a table; tailings are discarded to obtain reselected concentrates; the pulp concentration and the pH value of the reselected concentrates are adjusted; sodium silicate and hydroximic acid collecting agents are added in pulp in succession; foam products are collected; the pulp concentration and the pH value of the foam products are adjusted; sodium silicate is added; and the foam products are collected as pyrochlore concentrates. The pyrochlore concentrate obtaining method solves the technical problems of complicated process,difficult control and low production efficiency in a traditional pyrochlore obtaining method, and achieves the technical effects of convenient and fast process, easy control, reduction of the production cost and improvement of the production efficiency.