51results about How to "The preparation method has few steps" patented technology

The invention discloses a copper alloy wire for ultrafine machining and a preparing method for the copper alloy wire. The copper alloy wire comprises a core material and a coating. The core material is prepared by raw materials including, by weight, 23-45 parts of copper, 22-40 parts of carbon, 1-4 parts of tungsten, 1.2-4.4 parts of silver, 4-11 parts of molybdenum, 1.3-2.4 parts of tin, 2.1-5.2 parts of chromium, 1.2-4.4 parts of neodymium, 3.3-3.5 parts of cerium, 3-6 parts of boron, 3-6 parts of phosphorus and 3-6 parts of oxygen. Piano wires coated with brass are added to manufacture the copper alloy wire, the tensile strength of the copper alloy wire is doubled, the high-tensile, high-strength and high-performance cutting is achieved, the number of steps of the preparation method is small, the production equipment is simple, products meeting the requirement are easily manufactured, scale and automatic production is easily achieved.

The invention belongs to the technical field of energetic materials and relates to a metal salt complex of p-nitrocalixarene and a preparation method thereof. The general formula of the metal salt complex of the p-nitrocalixarene is MnC7aHm plus 2jNaO3a plus j. The metal salt complex of p-nitrocalixarene and the preparation method thereof have the beneficial effects that an energetic compound of an energetic group, i.e. the p-nitrocellulose [4, 6, 8] energetic metal salt complex is obtained through reacting the p-nitrocalixarene and soluble transition metal salt; the characteristics of easiness in synthesis, high melting point, good heat stability and good chemical stability of calixarene are fully utilized; as the metal salt complex is taken as a combustion catalyst of a energetic material under a high-energy high pressure, the sensitivity value of the energetic material is reduced to a certain degree; and moreover, the metal salt complex has the synergetic effect, so that the energy content of the energetic material is increased. The preparation method has the advantages of fewer steps, simplicity and fewer byproducts and is suitable for industrialized production.

The invention discloses a method for preparing solidified bodies on the basis of cesium-adsorbed silicon-based heteropolyacid salt composite adsorbents. The method includes particular steps of firstly, mixing solidifying base materials and the cesium-adsorbed silicon-based heteropolyacid salt composite adsorbents with one another to obtain mixtures and uniformly grinding the mixtures; secondly, carrying out static-pressure molding on the ground mixtures to obtain molded blanks; thirdly, calcining the molded blanks at the high temperatures of 800-1500 DEG C for 2-5 hours and annealing the molded blanks until the temperatures of the molded blanks reach the room temperature to obtain the cesium-containing ceramic solidified bodies. The solidifying base materials are selectively one or two types of allophane or zeolite materials. The method has the advantages that the solidifying materials such as allophane or zeolite are low in price and are easily available, processes for preparing the solidified bodies are simple, good cesium immobilization effects can be realized by the solidified bodies, the solidified bodies are high in strength and low in leaching rate, the method is applicable to solidifying and treating cesium-containing radioactive waste, and the like.

The invention discloses a preparation method of a pentaerythritol tetraacrylate mixture and belongs to the field of chemical engineering. The preparation method comprises following processes: (1) feeding reaction materials into a reactor and mixing the reaction materials uniformly; (2) heating the reaction system to perform constant-temperature reflux to obtain reaction products; (3) cooling the reaction products and washing the reaction products, allowing the reaction products to stand for being layered and obtaining an upper-layer organic phase; (4) adding a reducing agent to the organic phase for decoloration; (5) adding a polymerization inhibitor and removing solvents in the organic phase in a manner of reduced pressure distillation and molecular distillation; and (6) adding a diluent with mixing and performing pressurized filtration to obtain a finish product. The preparation method is free of generation of harmful gases, thereby avoiding air pollution. By means of the washing process, residual acrylic acid and other impurities in the reaction system are removed. By means of the reduced pressure distillation for separating the solvents and the reaction system and the molecular distillation for removing residual solid impurities, the pure finish product is obtained. By means of usage of an anti-oxidizing agent, feeding of a protective gas and the decoloration, yield of the finish product is increased and chroma of the finish product is reduced. By means of addition of the diluent, the finished product is enhanced in stability, is improved in application performances and is wider in application range.

The invention relates to the technical field of inorganic nano catalysts, in particular to a graphene quantum dot composite titanium dioxide nanotube photocatalyst, which comprises a titanium dioxidenanotube with a plurality of densely distributed graphene quantum dots on the surface, the average size of the graphene quantum dots being 35 nm, and a preparation method of the graphene quantum dot composite titanium dioxide nanotube photocatalyst. The preparation method comprises preparation of reduced graphene quantum dots, preparation of titanium dioxide nanotubes and preparation of the graphene quantum dot composite titanium dioxide nanotube photocatalyst. According to the preparation method, the titanium dioxide nanotubes are used as a titanium dioxide skeleton, are relatively high in rigidity and are not easy to agglomerate, also have very large specific surface area and effective area, and are compounded after redundant carbonyl groups and other groups on the surfaces of the graphene quantum dots are reduced in the preparation process, so that photocatalytic active sites are effectively exposed, and very high catalytic efficiency is achieved; in addition, the method is high inreaction efficiency, simple in process, few in steps, low in cost, good in safety and suitable for large-scale production.

The invention discloses a soft silver layer plated high-precision copper alloy wire and a manufacturing method thereof. The wire comprises a core and a plated layer. The core is prepared from, by weight, 23 to 45 parts of copper, 22 to 40 parts of carbon, 1 to 4 parts of tungsten, 4 to 11 parts of molybdenum, 1.3 to 2.4 parts of tin, 2.1 to 5.2 parts of chromium, 1.2 to 4.4 parts of neodymium, 3.3 to 3.5 parts of cerium, 3 to 6 parts of boron, 3 to 6 parts of phosphorus, 3 to 6 parts of oxygen, 8.2 to 10 parts of aluminum, 30 to 60 parts of zinc, 1.1 to 1.3 parts of zirconium, 1 to 1.5 parts of silicon, 5 to 8 parts of lead, 5 to 8 parts of arsenic and 1.5 to 4.4 parts of heat conducting padding. By the adoption of the wire and the method, when the requirements for the accuracy and the degree of finish of part machining are high, the tensile strength of the copper alloy wire is doubled, and high-drawing, high-strength and high-performance cutting is achieved; and by the adoption of the method, the steps are few, production equipment is simple, products meeting the requirements are easy to manufacture, and large-scale and automatic production is easy to achieve.

The invention belongs to the technical field of cosmetics, and discloses a compound plant antioxidant mixture as well as a preparation method and application thereof. The composition comprises the following components: a rosa roxburghii tratt fruit extract, an acanthopanax senticosus extract, a caesalpinia spinosa fruit extract, a capparis spinosa fruit extract and a kiwi fruit extract. According to the composition, the mode that five plant extracts including the rosa roxburghii tratt fruit extract, the acanthopanax senticosus extract, the caesalpinia spinosa fruit extract, the capparis spinosa fruit extract and the kiwi fruit extract are combined with one another is adopted, so that better free radical scavenging performance is achieved, and the kiwi fruit extract has an obvious synergistic effect on scavenging free radicals; and the composition has a synergistic anti-wrinkle effect on skin wrinkles, so that the skin is rich in elasticity and luster.

The invention relates to caesium decahydrodecaborate and provides a preparation method of the caesium decahydrodecaborate. The preparation method comprises the following steps of: with ditetraethylammonium decahydrodecaborate as a raw material and methanol as a solvent, enabling the tetraethylammonium decahydrodecaborate and caesium chloride to react in mole ratio of 1: 2-1: 5 for 1-6 hours at 40-65 DEG C while stirring, and preparing the caesium decahydrodecaborate adopting a one-step method. The preparation method of the caesium decahydrodecaborate comprises only one reaction step, and a preparation line in the prior art adopts a two-step reaction step; and according to the preparation method disclosed by the invention, the yield is higher, and the highest yield in terms of tetraethylammonium decahydrodecaborate can be 98.7%.

The invention belongs to the field of pharmaceutics, and particularly relates to an inhalation solution preparation containing Centella asiatica active ingredients and a preparation method of the inhalation solution preparation. The solution preparation includes 1 [mu]g/mL-30 mg/mL of Centella asiatica active ingredients, an isotonic agent and a solvent, wherein the Centella asiatica active ingredients are one or more selected from Centella asiatica total asiaticosides, asiaticoside, madecassoside, asiaticoside B, asiatic acid, pharmaceutical salts of asiatic acid, madecassic acid, pharmaceutical salts of madecassic acid, asiatic acid B and pharmaceutical salts of asiatic acid B. The solution preparation has clear pharmaceutical effects and low content of impurities, the active ingredientsof Centella asiatica have good stability during long-term storage, and the content of main ingredients reaches 98% or above; the inhalation solution preparation has clear pharmaceutical effects, highstability, reliable quality, high safety and long storage time, and moreover, no preservatives are added to the solution preparation, so that the safety factor of the solution preparation is higher;and the solution preparation has suitable taste, and the taste of the active ingredients of Centella asiatica is covered fully.

The invention discloses a gynostemma pentaphylla beverage and a preparation method thereof, and relates to the technical field of foods. The gynostemma pentaphylla beverage disclosed by the inventioncontains the following components: 30%-45% of a gynostemma pentaphylla extracting solution, 1%-5% of xylitol, 0.05%-0.1% of edible salt, 0.01%-0.03% of citric acid and the balance of water. The gynostemma pentaphylla beverage provided by the invention is attractive in color and luster and unique in flavor; the gynostemma pentaphylla beverage has the unique flavor of gynostemma pentaphylla, corrects the original bitterness of gynostemma pentaphylla, tastes sour and sweet properly, has high antioxidant activity and a certain health-care function, is suitable for being drunk by the public, is particularly suitable for being drunk by people suffering from diabetes, and provides certain reference for development and utilization of gynostemma pentaphylla.

The invention discloses camellia oleifera meal polysaccharide, a preparation method and an effect of a foot-and-mouth disease antagonizing vaccine on bull semen damage. The camellia oleifera meal polysaccharide is separated from camellia meiocarpa, and the average molecular weight is 75-95 kDa. The preparation method includes the specific steps that S1, the camellia meiocarpa is crushed, extracted, filtered and concentrated; S2, concentrated solution is added with anhydrous ethanol, and precipitates are collected after centrifugation; S3, the precipitates are dissolved in deionized water, samples are added in a DEAE-52 column, pure water and sodium chloride solution with different concentrations are successively used for gradient elution, and pure water eluent and 0.3mol/L, 0.5mol/L sodiumchloride eluent are collected respectively; S4, the pure water eluent and the 0.3mol, 0.5 mol/L sodium chloride eluent are concentrated on a Sephadex G-100 column, deionized water is used for elution, elution peaks are collected respectively, and freeze drying is conducted. The camellia oleifera meal polysaccharide can effectively antagonize damage on bull semen caused by the foot-and-mouth disease vaccine.

The invention discloses a rare-earth element added volcanic rock adsorbent. The rare-earth element added volcanic rock adsorbent is characterized by being prepared from the following raw materials in parts by weight: 8-15 parts of calcium carbonate fiber, 20-40 parts of tetrabutyl titanate, 3-5 parts of silica sol, 6-8 parts of calcium aluminate, 60-80 parts of volcanic rock, 6-9 parts of nylon PA6, 3-4 parts of gelatin, 1-3 parts of ammonium bicarbonate, 5-8 parts of ceria, 5-7 parts of attapulgite and a proper volume of deionized water. According to the rare-earth element added volcanic rock adsorbent, the adhesive power among the raw materials is enhanced by the ceria and attapulgite added, and ceria and attapulgite have a good interaction effect, so that the adsorption property of the adsorbent is further strengthened, particularly the absorption of nitrogen and phosphorus elements; and the adsorbent disclosed by the invention has a good adsorption effect on various pollutants and is high in adsorption efficiency, easy to remove and good in reuse effect, a preparation method comprises few steps and is simple in process, and thus industrial production is facilitated.

The invention discloses roasted coal. The roasted coal is prepared from the following raw materials in parts by weight: 80-95 parts of white coal, 3-5 parts of a binder, 2-8 parts of a desulfurizer and 4-6 parts of plant fibers, wherein the binder comprises 280-320 parts of kaolin, 85-105 parts of humic acid, 295-310 parts of bentonite, 80-100 parts of corn starch; the desulfurizer comprises 20-30 parts of hexamethylene tetramine, 45-55 parts of sodium nitrate, 45-55 parts of potassium nitrate, 20-30 parts of potassium permanganate, 20-30 parts of industrial salts, 45-55 parts of industrial essence, 8-12 parts of quick lime and 8-12 parts of sodium hydroxide. The roasted coal adopts the desulfurizer with different components and proportions, and the desulfurizer is combined with the white coal by virtue of the binder to prepare the roasted coal. The sulfur content of the obtained roasted coal is 0.5, which is about 2/5 that of the white coal, so that when the roasted coal is combusted, the exhausted sulfur dioxide is greatly lowered to meet the environment-friendly idea. The invention further discloses a preparation method of the roasted coal.