87results about How to "Dense" patented technology

The invention relates to a coating method for iron-based magnetically soft alloy powder and a preparation method of soft magnet composite material. The coating method for iron-based magnetically soft alloy powder comprises the following steps: carrying out accelerated oxidation on iron-based magnetic metal powder at high temperature, forming an oxide layer on the surface of the powder and then carrying out acid pickling, thus obtaining powder with surface coated with SiO2, Al2O3 and Cr2O3 oxides. The preparation method of the soft magnet composite material comprises the following steps: adding coupling agent, silicon resin and lubricating agent to the coated powder, carrying out pressing forming, and then carrying out annealing heat treatment, thus obtaining the soft magnet composite material. According to the invention, the advantage that an oxide produced in reaction of elements including Si, Al and Cr contained in the iron-based magnetically soft alloy powder with oxygen is high in electrical resistivity, small in thermal expansion coefficient and steady in chemical performance and can resist high temperature is fully utilized; the adopted coating technology is to produce a coating layer in situ on the surface of the alloy magnetic powder, and is simple in process, easy to operate and low in cost; the metal soft magnet composite material prepared by adopting the method disclosed by the invention has good magnetic property and frequency stability.

The invention discloses a multi-level acceleration method of flow-based biological sequence database search, which is to accelerate the search speed of a biological sequence database on the premise of ensuring search accuracy and relatively low cost. The technical proposal is that a cluster system composed of a plurality of personal computers shall be created firstly, and a master control node machine is assigned; the master control node machine distributes the database sequence and stores into each node machine in the cluster system, so as to fill and rearrange an inquiry sequence, and distribute the inquiry sequence to all the node machines in the cluster system; each node machine executes the search task in parallel, so as to be responsible for the completion of search tasks of the inquiry sequence in a local database sequence; the master control node machine collects, summarizes and outputs the results of parallel search tasks on all the node machines. The invention makes the search tasks be executed in parallel between the n node machines of the cluster, each node machine distributes the comparative calculation task of two sequences to p hardware calculation clusters to be conducted in parallel, thereby realizing the multi-level acceleration objective in parallel of three layers including a cluster node layer, a flow-level calculation layer, as well as a flow inner core command layer.

The invention provides a preparation method of a double-sided capacitor structure. The preparation method of the double-sided capacitor structure comprises the following steps: 1) providing a semiconductor substrate, and forming a stacked structure on the semiconductor substrate; 2) forming a graphical mask layer on the stacked structure, and etching a plurality of capacitance holes in the stackedstructure based on the graphical mask layer; 3) forming a lower electrode layer at the bottom and side walls of the capacitance holes; 4) forming a mask layer on the structure obtained by the step 3,and forming a mask opening on the stacked structure based on the mask layer, wherein the opening exposes 20% to 60% inner aperture area of the capacitance holes; and removing a sacrificial layer based on the mask opening; and 5) forming a capacitive dielectric layer on the inner and outer surfaces of the lower electrode layer, and forming an upper electrode layer on the outer surface of the capacitive dielectric layer. The invention adopts different opening modes to form the double-sided capacitor with denser density, stronger mechanical strength and guaranteed capacitance value through controlling the opening area of the capacitor and using a supporting layer etching gas source.

A dividual conjugate fiber for obtaining a fiber structure excelling in denseness and bulkiness. The dividual conjugate fiber is one having a polyamide resin composition and a fiber forming polymer with no compatibility with the polyamide resin composition bonded together in the direction of fiber length, characterized in that the polyamide resin composition is composed of an aromatic polyamide and an aliphatic polyamide. Preferably, the aromatic polyamide is a nylon MXD6 polymer, and the aliphatic polyamide is a nylon 6 polymer.

The invention relates to a preparation method of a perovskite solar cell light absorption layer material methylamine lead dibromide. The preparation method comprises the following steps: mixing solid methyl ammonium bromide and solid lead dibromide, adding the mixture into a N,N-dimethyl formamide solvent, stirring uniformly to obtain a reaction solution, pouring the reaction solution in a container, applying a pulse electromagnetic field to treat the reaction solution, dropwise adding the treated reaction solution on a clean conducting glass substrate, performing low-speed spin coating and high-speed spin coating respectively to form a perovskite film with the thickness of 500-800 nm, then putting the perovskite film in a vacuum drying oven, and performing annealing treatment to obtain a methylamine lead dibromide film. The preparation method has the advantages that the preparation technology is simple, the preparation cost is low, the degree of crystallinity of the product can be improved by adopting the treatment of the pulse electromagnetic field, and the heat preservation time of annealing treatment is greatly shortened and is only 1/6 of that when the treatment of the pulse electromagnetic field is unadopted, so that the production cycle of the product is shortened, the energy resources are saved, and the preparation method is beneficial for industrial production.

The invention relates to a method for controlling flue gas desulfurization based on neural network prediction. The method is characterized by comprising the following steps: S1, collecting sample datarelated to time variation in a wet flue gas desulfurization system, and determining neurons of an input layer and an output layer of a dynamic neural network according to the collected sample data; S2, modeling the wet flue gas desulfurization system by using the dynamic neural network in the S1 to establish a prediction model of the wet flue gas desulfurization system; and S3, calculating a sulfur dioxide concentration prediction value at a flue gas outlet of the wet flue gas desulfurization system by using the prediction model of the wet flue gas desulfurization system established in the S2, and controlling a slurry spray amount of the wet flue gas desulfurization system by using the sulfur dioxide concentration prediction value.

The invention discloses a high-pressure airless spray gun without a blind spraying corner. The high-pressure airless spray gun comprises a gun grip and a high-pressure spray nozzle. A pressure-regulating valve is mounted on the high-pressure spray nozzle, an access end of the high-pressure spray nozzle is a connector matched with an exit end of the gun grip, and the exit end of the gun grip is connected with the access end of the high-pressure spray nozzle. The high-pressure airless spray gun further comprises a diaphragm pump driven by a motor. During a spraying operation, the high-pressure airless spray gun sprays coatings directly on the surface of a workpiece to be sprayed and processed by means of taking static pressure generated from the diaphragm pump as driving force to spray the coatings. Due to the fact that compressed air is not taken as the driving force to spray the coatings, rebounding and splashing of the coatings during the spraying process are basically avoided, and coating fog particles sprayed out can smoothly enter corner cracks and edges of the workpiece with less spraying pollution and no dead corner. The high-pressure airless spray gun has the advantage that a sprayed coating is compact, uniform, glossy, high in flatness and the like.

The invention relates to a high-temperature and high-enthalpy phase change material microcapsule with a multiwall structure, and a preparation method thereof. The shell structure includes three layerswhich are a volume expansion buffering layer, an anticorrosion layer and a high temperature-resistant strong layer respectively. A material with the thermal decomposition temperature lower than the phase transition temperature of a core material is used as the volume expansion buffering layer, so the volume expansion buffering layer plays a role in occupation in the process of coating with the outer shell layer at a low temperature, and the volume space formed by the high-temperature thermal decomposition buffers volume expansion caused by the phase change of the core material. The middle layer is the anticorrosion layer, and needs to be coated with a dense layer of an anticorrosive material in order to prevent the molten phase change material from seeping and destroying a base material in contact with the phase change material. The outermost layer is the high temperature-resistant strong layer, and requires certain compactness, heat resistance and strength, so that the capsule is protected during embedding and using of the base material, thereby the service life and the thermal stability of the capsule are improved. Compared with the prior art, the preparation method of the invention overcomes the defect that the high temperature phase change material microcapsule is difficult to recycle, and expands the application of the phase change material in extreme environments.

The invention relates to a double-component concrete surface enhancer, and a preparation and application method thereof. The double-component concrete surface enhancer provided by the invention is composed of a reinforcing agent A and a reactant B (water-based), wherein the reinforcing agent A is a 10-60 wt% calcium nitrate water solution, and the reactant B is a 5-10 wt% water solution of aluminum sulfate, potassium carbonate, sodium silicate or magnesium fluosilicate. The application method comprises the following steps: applying the reinforcing agent A onto the concrete surface, drying, and applying the reactant B. The double-component concrete surface enhancer capable of chemical reaction can generate chemical reaction in the permeable concrete surface region, and the generated reaction product has the effects of filling, compaction, enhancement and plugging and can obviously enhance the surface strength of the hardened concrete; and the double-component concrete surface enhancer also has obvious enhancement effects on long-age concrete.

The invention discloses a polymeric environmentally-friendly root puncture-resistant waterproof polyurethane coating for a planting roof. The root puncture-resistant waterproof polyurethane coating comprises, by weight, 15-20 parts of polyether 2000N, 5-10 parts of polyether 330N, 4-6 parts of MDI, 0.06-0.1 part of a catalyst, 1-1.5 parts of a latent curing agent, 0.5-1.5 parts of a root punctureinhibitor, 0.2-0.5 part of a dispersant, 0.2-0.5 part of a defoamer, 0.2-0.5 part of an antioxidant, 45-55 parts of a filler and 1-2 parts of an anti-settling agent. Polyether polyol and isocyanate are used as basic raw materials, the chemical root puncture inhibitor is added, multiple additives and fillers are added, and addition polymerization is carried out to obtain the root puncture-resistantwaterproof polyurethane coating; and -NCO in a polyurethane prepolymer is contacted and chemically reacted with moisture in air to generate chemical bonds in order to form an elastic, tough, compactand highly-strong jointless integral waterproof coating film.

The invention discloses a polymeric environmentally-friendly waterproof polyurethane coating for waterproof parts of buildings. The polymeric environmentally-friendly waterproof polyurethane coating comprises, by weight, 15-20 parts of polyether 2000N, 5-10 parts of polyether 330N, 4-6 parts of MDI, 0.06-0.1 part of a catalyst, 1-1.5 parts of a latent curing agent, 1-5 parts of a liquid modifier,0.2-0.5 part of a dispersant, 0.2-0.5 part of a defoamer, 0.2-0.5 part of an antioxidant, 45-55 parts of a filler and 1-2 parts of an anti-settling agent. The environmentally-friendly waterproof polyurethane coating is a one-component environmentally-friendly waterproof coating constructed in a liquid state; and polyether polyol and isocyanate which are used as basic raw materials, and are subjected to addition polymerization in the presence of various additives and fillers, and -NCO in a polyurethane prepolymer is contacted and chemically reacted with moisture in air to generate chemical bonds in order to form an elastic, tough, compact and highly-strong jointless integral waterproof coating film.

The invention relates to a manufacture method of the ceramic cylinder jacket of high-pressure sludge pump for drilling, in which using zirconium oxide plasticized alumina (a-Al 203) as a matrix, leading in Zr 02 and Y 203-La 203 rare earth composite additive by using the modern plasticizing and reinforcing technology and adopting the isostatic compaction technology makes green bodies have uniformity and compactness. Because of using the atmospheric high-temp. drawer kiln once-through sintered, the temperature is distributed uniformly.

The invention provides a special reversible temperature indicating light stable coating for a transformer pile head and a preparation method for the coating. The coating comprises the following components in parts by mass: 40-75 parts of epoxy resin, 10-30 parts of temperature sensing powder, 1-5 parts of a dispersant, 1-5 parts of a flatting agent, 1-3 parts of a defoamer, 1-5 parts of an anti-settling agent, 5-20 parts of a solvent, 1-10 parts of sericite powder, 1-5 parts of aluminum-magnesium silicate and 1-10 parts of an ultraviolet absorbent; the component B comprises 50-100 parts of an epoxy curing agent and 0-5 parts of xylene. The mass ratio of the component A and the component B is 1: (0.7-1). The product provided by the invention has good sun protecting and antiaging properties, and can indicate change of the temperature of the transformer pile head by virtue of change of colors. Moreover, the temperature change rate is fast, the temperature restoring time is short, and meanwhile, the preparation method is simple and the cost is low.

The invention discloses a preparation method of a SiC coating. Polymethylsilane is adopted as a coating main body material, and active metal powder and inert ceramic powder are added, so that the prepared coating slurry can be used for preparing the SiC high-temperature-resistant coating on a high-density green body by adopting a brushing method, and the coating has the characteristics of compactness, high bonding strength, high temperature resistance and oxidation resistance. The SiC high-temperature-resistant coating prepared through the method is compact, high in bonding strength with a high-density green body, not prone to falling off and cracking and good in oxidation resistance at the temperature of 1,600 DEG C or below. The method is low in equipment requirement, short in manufacturing period, high in efficiency and safe and controllable in preparation process. Meanwhile, the prepared SiC coating has high bonding strength with a high-density green body, is compact, is not easy to fall off, has oxidation resistance, and can meet the requirements of high temperature resistance and oxidation resistance at 1600 DEG C.

The invention discloses a preparation method for a novel porcelain tire body inorganic repairing material and a porcelain product repaired by the inorganic repairing material. Kaolin and commercially pure chemical raw materials are adopted. The novel porcelain tire body inorganic repairing material is prepared from the following raw materials in percentage by weight: 55 to 62 percent of kaolin, 10 to 15 percent of sodium hydroxide, 6 to 9 parts of sodium silicate, 8 to 10 percent of beta-semi-hydrated gypsum and 10 to 17 percent of deionized water. The inorganic repairing material is obtained by calcining, ball milling, drying and stirring the raw materials. By adopting the preparation method, the defects of sparse structure, low strength, high water absorption and lack in porcelain quality due to repair of a porcelain tire body with gypsum are overcome; moreover, the novel inorganic repairing material is scientific and reasonable in production method, is easy to implement, and has a wide market prospect.

The invention relates to the field of preparation of a drug sustained-release carrier, in particular to a preparation method of a silk fibroin microsphere drug sustained-release carrier and an application thereof. The method for preparing the silk fibroin microsphere drug sustained-release carrier provided by the invention comprises the following steps: dissolving the recombinant spider silk protein fiber, and performing steps of filtering, dialysis, and concentrating to obtain a silk fibroin solution; placing the silk fibroin solution in a dialysis bag, adding a nano material to the dialysisbag, and then placing the dialysis bag in a water bath at 22 DEG C to 25 DEG C, and processing the materials in a uniform shaker to obtain a microsphere suspension; washing the microsphere suspensionwith deionized water, and performing steps of centrifugation and freeze drying to obtain thesilk fibroin microsphere drug sustained-release carrier; wherein the nano material is nano-titanium dioxideparticles and nano-goat bone particles. The drug sustained-release carrier obtained by the preparation method provided by the invention can combine the faster initial release rate of the drug and theexcellent sustained-release effect, and has the good application prospect.

The invention discloses a preparation method of high-shrinkage orange slice type double-component spunbonded spunlace microfiber leather base cloth. The method comprises the following steps of firstly, adding a hot air device and a fiber crimping device in a double-component spunbond/spunlace production line, and then spinning double-component composite fibers into a web; conveying the fiber web into the hot air device for thermal shrinkage treatment, and enabling the double-component composite fibers to generate a split trend by utilizing thermal shrinkage of high-shrinkage components in the double-component composite fibers; enabling the double-component composite fibers to be split and mutually entangled through a spunlace technology; conveying the double-component composite fibers into a fiber crimping device, and performing shrinkage and crimping treatment on non-woven cloth by utilizing the fiber crimping device, so that the high-shrinkage components are completely shrunk and crimped, and the double-component spunbonded spunlace microfiber leather base cloth is obtained. The method is simple in technological process and low in production cost and energy consumption, green and clean preparation of the microfiber leather base cloth can be achieved through a one-step method, and the prepared hollow orange slice type double-component spunbonded spunlace leather base cloth has the characteristics of being compact, soft, stiff and smooth and full in hand feeling.

The invention discloses concrete outer wall waterproof heat insulation paint and a preparation method thereof, and relates to the technical field of paint. The paint is prepared from 55 to 65 parts ofacrylate emulsion, 50 to 55 parts of modified phenolic resin, 10 to 15 parts of modified hollow ceramic microspheres, 8 to 11 parts of fly ash-graphene composite powder, 3 to 5 parts of waste glass-iron praseodymium magnetic oxide powder, 3 to 5 parts of osmotic reinforcing agents, 10 to 25 parts of auxiliary agents and 65 to 75 parts of water. The preparation method comprises the steps of preparing liquid material ingredients and the like. The paint has good waterproof and heat insulation performance.

The invention discloses a zinc oxide coating-hydroxyapatite coating with biological activity and antibacterial property as well as a preparation method and an application thereof. The zinc oxide coating-hydroxyapatite coating comprises an alkaline zinc oxide coating and a hydroxyapatite coating, the alkaline zinc oxide coating is excited by ultraviolet light to generate .OH on the surface to form a zinc oxide coating-hydroxyapatite coating with the hydroxyapatite coating; and the preparation method comprises the following steps: exciting the surface of the alkaline zinc oxide coating to generate. OH, and reacting with SBF simulated body fluid to form the zinc oxide coating-hydroxyapatite coating. The zinc oxide coating-hydroxyapatite coating is used for preparing an orthopedic implant. The method is low in cost, high in efficiency, simple and easy to implement and environmentally friendly, and the zinc oxide coating-hydroxyapatite coating prepared through the method has good biological activity and antibacterial performance and has high commercial popularization value.

Nasal implant obtained by additive manufacturing, comprising a main portion and a return portion connected by an intermediate portion, the main and return portions forming an angle of between 25° and 90°,

• • said implant is made from a biocompatible ceramic of synthetic origin;
  • said implant has an average macroporosity characterized by:
    • a density of material of between 20% and 95% by volume, said density of material being higher in said intermediate portion than in said main portion;
    • cavities defining sections of cavities, said sections of cavities each having a diameter of between 0.3 mm and 1 mm;
  • said sections of cavities each having an area and a form substantially equal over the entire implant.

The invention provides a hydrological monitoring device based on narrowband Internet of Things (NB-IoT), which comprises a front-end multifunctional acquisition circuit (1), an MCU processor system (2), an intelligent strategy uploading processing mechanism (3), an NB-IoT module (4) and a storage unit (5); the MCU processor system (2) reads parameters configured on the storage unit (5) and selectsdifferent front-end acquisition circuits (1) which can be connected with various types of sensors and can be used for hydrological monitoring instruments which are conventionally used at present, theintelligent strategy uploading processing mechanism (3) is a control program stored on the MCU processor system (2), and selects whether to start the NB-IoT module (4) to transmit data or not, when the NB-IoT module (4) does not work, the NB-IoT module (4) is low in power consumption and keeps in a dormant state, and only one lithium battery is required for conventional monitoring frequency for several years. The hydrological monitoring device based on NB-IoT can embody the advantages of the NB-IoT and the measurement data of the sensors is transmitted to a cloud platform or a server throughthe NB-IoT, so that hydrological monitoring can be spread in a large area.