357results about How to "Craft short" patented technology

The invention relates to a production technology of black tea, in particular to the technical field of the black tea. The production technology of the black tea comprises the following working procedures: green removing, twisting, piling, drying at first time, steaming, compacting, fermenting and drying 2, wherein pulp filling is carried out on a tea leaf raw material before the green removing working procedure, and the mass ratio of water to tea leaf is 6-9% in the pulp filling process; and artificially adding inoculated strains between the steaming working procedure and the fermenting working procedure, wherein the artificially inoculated strains are one or more of Eurotium cristatum, candida albican and aspergillus niger. By adopting the production technology provided by the invention,time of a fermentation technology in the production process of the black tea is reduced, production efficiency is improved, and yield of the black tea is increased; meanwhile, the problem that the traditional black tea production technology is controlled by experience and level of a tea making master worker is solved, the time for producing the black tea by utilizing the technology is short, the produced black tea has good consistency, strong taste, pure fragrance, red-yellow soup colour and brown and bright leaf edge.

The invention discloses a rotational molding wear-resistant polyolefin resin and a preparation method thereof. In the rotational molding wear-resistant polyolefin resin, raw materials commonly used in the rotational molding process, namely linear low-density polyethylene, high-density polyethylene or polypropylene is taken as a matrix material; and by adding components of an inorganic filler, ultrahigh molecular weight polyethylene and a lubricant, the wear resistance of the matrix resin is improved. The rotational molding wear-resistant polyolefin resin consists of the following components in percentage by mass: 70 to 80 percent of matrix resin, 10 to 15 percent of inorganic filler subjected to surface treatment, 4 to 13 percent of ultrahigh molecular weight polyethylene and 1.5 to 2 percent of lubricant, wherein the matrix resin is the linear low-density polyethylene, the high-density polyethylene or the polypropylene; and a range of a melt flow rate of the matrix resin is between 2g/10min and 15g/10min.

The invention discloses a process for preparing a metallurgical powder product from titanium hydride powder preparedmade by hydrogenating sponge titanium instead of titanium powder. The process comprises the following steps of: firstly, hydrogenating sponge titanium, crushing and, rating and mixing brittle titanium hydride, and mixing the titanium hydride with an alloy element; and then, carryingout near-net shape pressing to finish dehydrogenation in a vacuum sintering process. In the process of directly forming the titanium hydride powder, because of the secondary crushing of the brittle titanium hydride powder, the pressed green density is higher than that obtainedan occasion when titanium or titanium alloy powder is used, and the titanium is prevented from being oxidized. In the sintering process, the density of a sintering blank can rapidly rise (to be higher than 99 percent) because of the decomposition of the titanium hydride. The method has the characteristics short process flows, high yield and product density, low cost and oxygen content and good performance.

The invention relates to a directed graphite-copper composite material with superhigh thermal conductivity and high strength and a preparation method and application thereof. Specifically, the composite material is formed by graphite sheet layers and copper layers through hot-pressing sintering, and the graphite sheet layers and the copper layers are arranged in parallel in a directed mode. The ratio of the thermal conductivity of the composite material in the direction parallel to the X-Y direction to the thermal conductivity of the composite material in the direction perpendicular to the X-Y direction is not smaller than 4, the thermal conductivity of the composite material in the direction parallel to the X-Y direction is not smaller than 500 W/m.K, and the X-Y direction is parallel to the graphite sheet layers and the copper layers at the same time. The invention further discloses the preparation method of the composite material. As the graphite sheet layers of the composite material are arranged in the directed mode in the height direction and the copper layers are evenly distributed between the graphite sheet layers, the composite material has quite high thermal conductivity and low coefficient of thermal expansion. The preparation method is simple, low in cost and quite suitable for being popularized on a large scale.

The invention provides an inner wall-silver plated and liquid crystal-filled hollow optical fiber surface plasmon resonance temperature sensor and belongs to the optical fiber sensing technical field. According to the structure of the sensor, the interior of a hollow glass optical fiber is plated with silver, and the silver-plated hollow glass optical fiber is filled with liquid crystal; the inner diameter of the hollow glass optical fiber ranges from 300 microns to 500 microns, the numerical aperture of the hollow glass optical fiber is not lower than 0.27, and the length of the hollow glass optical fiber ranges from 30 mm to 50 mm; sensitization treatment is performed on the inner wall of the hollow glass optical fiber, and a 45nm-to 80nm uniform silver film is formed in the optical fiber through adopting a liquid phase chemical deposition method, and therefore, a sensing layer of surface plasmon resonance can be formed; and the hollow optical fiber is filled with thermotropic nematic liquid crystal, and plastic-clad multimode optical fibers are coupled to the ports of the optical fiber respectively, and end sealing processing is realized. With the inner wall-silver plated and liquid crystal-filled hollow optical fiber surface plasmon resonance temperature sensor adopted, subtle temperature changes can be dynamically monitored in real time. The inner wall-silver plated and liquid crystal-filled hollow optical fiber surface plasmon resonance temperature sensor is suitable for long-distance transmission. According to the inner wall-silver plated and liquid crystal-filled hollow optical fiber surface plasmon resonance temperature sensor, special inner wall silver plating technology is adopted, and the hollow optical fiber is filled with the thermotropic liquid crystal, and therefore, the oxidation of the external silver layer of the solid optical fiber surface plasma resonance sensor can be avoided.

The invention discloses plasma 3D printing remanufacturing equipment and method for a train wheel. The plasma 3D printing remanufacturing equipment consists of a monitoring system, a plasma beam processing system, a machining device for machining a train wheel to be repaired, a triaxial moving mechanism used for driving the machining device to move and a horizontal printing platform used for placing the train wheel to be repaired, wherein the plasma beam processing system consists of a plasma generator, a printing position adjusting device, an air supply device and a powder feeder; and the monitoring system comprises a horizontal movement controller, a temperature detection unit, a distance detection unit, a printing distance adjustment controller and a rotation controller, and the temperature detection unit and the printing distance adjustment controller constitute a temperature adjustment and control device. The plasma 3D printing remanufacturing method comprises the following steps: firstly, detecting defects of the train wheel; and secondly, repairing the train wheel. The plasma 3D printing remanufacturing equipment is reasonable in design, simple and convenient to operate, high in efficiency and good in using effect, the repair process is directly carried out in the atmospheric environment without a closed molding room, the repaired train wheel is good in quality, and the repair efficiency is high.

The invention discloses a nano silver-polyvinylidene fluoride composite separation membrane and a preparation method thereof. The separation membrane is obtained by modifying a polyvinylidene fluoride membrane with nano silver. According to the invention, two dispersion methods namely a physical method and a chemical method are simultaneously adopted in the preparation process, so that nano particle reaches an ideal dispersion effect in the polyvinylidene fluoride separation membrane and a reliable guarantee is provided for the excellent property of the membrane. In the invention, a noble metal nano silver the price of which is relatively low is added, and the amount of nano silver is regulated, so that the mechanical property, antibiotic property and pollution resistance of the polyvinylidene fluoride separation membrane are greatly improved, the water flux and trapping rate of the polyvinylidene fluoride separation membrane are also improved, the service life of the membrane is prolonged, and the membrane has high performance-to-price ratio.

The invention discloses a manufacturing method and a manufacturing device of a flexible printed circuit. The method mainly includes the steps of providing an imaging flexible printed circuit substrate which is coated with nanometer conductive ink or sizing agents; exerting pressure to the flexible printed circuit substrate; and sintering the flexible printed circuit substrate by using xenon lamp sintering technology at the same time when the pressure is exerted and obtaining a target product. By means of the method, a printed circuit can be rapidly manufactured on a low temperature flexible substrate, a metal film which is good in binding force, electrical conductivity and compactness can be obtained, and manufacturing cost is low. The method avoids the processes such as photoetching in the manufacturing process of a traditional flexible printed circuit, rapid and pollution-free flexible printed circuit manufacturing is achieved, and the method is suitable for the production and the manufacture of the flexible printed circuit of the low temperature substrate.

The invention discloses a preparation method for silk fibroin composite gel. The preparation method comprises the following steps: conducting a dissolution treatment on silk fibroin obtained by degumming in a LiBr solution; preparing a regenerated fibroin solution through dialysis; mixing the regenerated fibroin solution with Gamma- polyglutamic acid; finally, preparing the silk fibroin composite gel under the action of a cross linking agent. The preparation method is simple in technology and short in the gelation time; the efficiency is greatly improved; the required amount of the cross linking agent is small; the safety is strong; the prepared silk fibroin composite gel is degradable and has relatively high mechanical property and stronger water absorbability, so that the silk fibroin composite gel is superior to silk fibroin composite gel prepared from other methods. The silk fibroin composite gel can be used for the fields of medicine and health, tissue engineering, environmental protection and the like; the application of the silk fibroin composite gel is broadened and a novel thought and a novel method of preparing high-strength silk fibroin composite gel are provided.

A transducer comprises stationary scale, active scale, transducer coil, driving circuit and control circuit as metal reflecting conductor arranged uniformly as per certain wavelength period and certain ruled shape is erected on stationary scale, a numbers of transducer coils with specific distance and shape are set on active scale, coils are connected to pulse circuit through driver and output sampler of transducer coil is connected to single-chip computer which its output is connected to display through display circuit, to pulse circuit through controller and to external equipment through communication interface.

The invention provides a preparation method of a humic acid-containing fertilizer and soil conditioner composition, wherein the preparation method includes treating a humic acid raw material and an activating agent through a coal grinding machine to obtain the humic acid-containing fertilizer and soil conditioner composition. The method avoids a high energy consuming problem of humic acid wet production comprising firstly adding water to carry out a reaction and then carrying out evaporation drying to remove moisture and a solid slag pollution problem after solid-liquid separation, the process is simple and convenient, the flow is shortened, and the obtained product has stable quality.

The invention discloses a catalytic preparation method of dicyclopentadiene dioxide by quaternary ammonium heteropoly phosphato tungstate, which is characterized by comprising the following steps: epoxidation reaction: adding the raw materials of dicyclopentadiene, solvent I and quaternary ammonium heteropoly phosphato tungstate in a reactor, heating the temperature to 30-80 DEG C, stirring and dropwise adding aqueous hydrogen peroxide solution, and reacting for 3-36h under the temperature of 30-80 DEG C after dropwise adding; post-treatment: cooling the reacted materials to room temperature, evaporating solvent I by reduced pressure distillation and separating and removing water to obtain the mixture of the product and the quaternary ammonium heteropoly phosphato tungstate catalyst, dissolving and filtering the mixture by ethyl acetate to obtain filter cake, namely the recovered quaternary ammonium heteropoly phosphato tungstate catalyst, recovering ethyl acetate by performing reduced pressure distillation on filtrate to obtain the crude product, performing recrystallization on the crude product by solvent II, and drying to obtain the product. The invention has the advantages of convenient operation, high safety, small pollution, simple post treatment, and high product yield and purity.

The invention discloses a method for extracting and separating ganoderma lucidum polysaccharide from ganoderma lucidum sporocarp. The method comprises the steps of carrying out enzymolysis and extraction with complex enzyme on the ganoderma lucidum sporocarp to obtain enzymolysis solution, concentrating and separating the enzymolysis solution through a tangential flow filtering membrane to obtainultrafiltration retention solution, carrying out elution, separation and purification on the ultrafiltration retention solution with purified water through radial flow chromatograph to obtain polysaccharide eluent, and conducting reduced pressure concentration and drying on the polysaccharide eluent to obtain ganoderma lucidum polysaccharide, wherein the papain and and cellulose are mixed in a weight ratio of 1:2-4:1 to form complex enzyme. The invention builds a set of polysaccharide production process of ganoderma lucidum sporocarp from raw materials to products, the process is environment-friendly, fast and efficient and suitable for large-scale production and the process cost for refining ganoderma lucidum polysaccharide can be greatly reduced.

The invention discloses zr-based amorphous-crystal multiphase material, which is composed of Zr 45-50at%, Cu 36-40at%, Al 8-10at%, rare earth elements RE 0.5-2at% and allowance refractory element M, wherein the rare earth elements RE is one of Y, Dy, Gd, Er or Lu, the refractory element M is one of Ta or W, a second phase which is rich Ta solid solution or W compound with high melting point is precipitated from the zr-based amorphous-crystal multiphase material which is prepared through a metal mould casting method. The volume fraction of amorphous alloy in the multiphase material of the invention is 90-99%, which occupies absolute advantage, the zr-based amorphous-crystal multiphase material breaks the defects of single block amorphous alloy that the plasticity is bad, the single block amorphous alloy is abruptly invalid and brittle failure, the thermal stability is bad, and the like, the fracture strength in 22DEG C is 1800-2100MPa, the yield strength is 1600-1900MPa, the plastic deformation reaches 4-15%, and the applicable range of the material in the engineering structure and biomedical materials fields is extended.

The invention discloses a method for extracting high-purity manganese dioxide from manganese slag, which comprises the following steps of: at normal temperature, adding dilute sulfuric acid in an amount 1.1-1.5 times the theoretical amount into the manganese slag and leaching metal impurity ions in the manganese slag; filtering to obtain an acid solution with the pH of 1.0-2.0, adding a sodium chlorate or potassium chlorate solution in an amount 1.1-1.5 times the theoretical amount into the acid solution, carrying out hydro-thermal reaction for 1-3 hours at the temperature of 120-150 DEG C, filtering manganese dioxide precipitates generated by the reaction, carrying out acid washing with 0.05-0.15mol/L-1 of dilute sulfuric acid, drying at the temperature of 60-120 DEG C after water washing, and calcining for 1-2 hours at the temperature of 350-450 DEG C to obtain the manganese dioxide with the product purity of larger than 98 percent. In the invention, the extraction ratio of the manganese in the manganese slag can reach more than 93 percent, the purity of the obtained manganese dioxide can reach more than 98 percent, the economic value of products is high, and the method has short process flow and simple operation.

The invention provides a n- type Mg-Sb based room temperature thermoelectric material. A chemical general formula of the material is Mg3+DeltaMnxSb2-y-zBiyAz, wherein A represents oxygen family elements such as S, Se or Te, Delta is greater than or equal to -0.2 and is less than or equal to 0.3, x, y and z represent atomic ratios, x is 0.001-0.4, y is 0-1.0 and z is 0-0.2. The preparation method comprises the steps of selecting single elements with purity greater than or equal to 99% as raw materials according to the chemical general formula, proportioning and weighing the raw materials separately in an argon atmosphere, then putting the raw materials in a ball milling machine, adding stainless steel balls into the ball milling machine, and obtaining powder after the ball milling machine rotates at high speed; weighing the powder separately and then putting the powder in a graphite mold, then putting the mold in a high-temperature furnace, vacuumizing, sintering when the total air pressure is less than 4Pa, then cooling to room temperature after the sintering is ended. The thermoelectric material provided by the invention has higher room temperature thermoelectric figure of merit and better mechanical performance than traditional n-type bismuth telluride, and is low-cost; and the preparation method is easy to operate, is lower in cost, and has high controllability and repeatability.