161results about How to "Regulated content" patented technology

The invention relates to a preparation method of a NiAl intermetallic base solid self-lubricating composite material containing Ti3SiC2 and C binary composite lubrication phase and wild phase TiC. The NiAl intermetallic base solid self-lubricating composite material is prepared from Ni powder, Al powder, Mo powder, Nb powder, Fe powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ni: Al: Mo: Nb: Fe: B=48: 50: 1: 1: 0.5: 0.02, and the addition quantity of the Ti3SiC2 powder is 5-20 weight percent of the total weight of the Ni powder, the Al powder, the Mo powder, the Nb powder, theFe powder and the B powder. The NiAl/ Ti3SiC2-C/TiC intermetallic base solid self-lubricating composite material synthesized by the method has novel component design (intermetallic matrix+ composite lubrication phase+ wild phase), high density, good tribological properties and stable technological parameters. The preparation process is fast and simple, and the method is easily operated and is suitable for preparing NiAl intermetallic base solid self-lubricating composite materials with high performance.

The invention discloses a graphene oxide reinforced composite carbon nanopaper and a production method thereof. The above carbon paper includes: a carbon nanotube substrate including a skeleton network mainly formed by carbon nanotubes; and at least an enhanced network for connecting the carbon nanotubes in the skeleton network, wherein the enhanced network is mainly formed by graphene oxide dispersed in the skeleton network. The production method comprises the following steps: uniformly mixing a carbon nanotube dispersion with a graphite oxide graphene dispersion filtering to form a film, and peeling the formed film from a substrate filter film in order to obtain a target product. The composite carbon nanopaper has greatly improved mechanical properties, has no apparent loss of the excellent electrical conductivity or thermal conductivity, fully solves the problem of poor mechanical strength of present carbon tube nanopaper, and has the characteristics of electrical conduction, thermal conduction, light weight, flexibility and high efficiency. The production method has the advantages of simplicity, easy operation, good controllability, low cost and wide application prospect.

The invention relates to an aeroengine case seam allowance size repairing method. The porosity and hardness of a coating and the content of oxides in the coating can be effectively adjusted by controlling the plasma spraying power and the heating process of spraying powder during flying, and heat stress of the coating is reduced. The hardness and thermal expansion coefficient of the prepared nickel-aluminum coating are equivalent with those of a case, the bonding strength of the coating is far higher than the stress strength of a case seam allowance under the given working condition, and the use working condition of the aeroengine case can be met.

The invention discloses a three dimensional graphene/hollow carbon sphere/sulfur composite material, a preparation method thereof, and an application in lithium-sulfur batteries. The three dimensional graphene/hollow carbon sphere/sulfur composite material comprises nanometer elemental sulfur and a three dimensional graphene-hollow carbon sphere nano-compound, and the nanometer elemental sulfur is distributed in the three dimensional graphene-hollow carbon sphere nano-compound. The preparation method comprises the following steps: dispersing the three dimensional graphene-hollow carbon sphere nano-compound in an alcohol and water mixed solvent to obtain a suspension; and adding an aqueous solution of Na2S.9H2O and Na2SO3 into the suspension, adding an acidic solution, and reacting to obtain the three dimensional graphene/hollow carbon sphere/sulfur composite material. The composite material has the advantages of high specific capacity, stable cycle performances, and excellent rate performance and coulombic efficiency, the preparation method has the advantages of simplicity, convenience and good effect, and the composite material can be applied in the preparation of lithium-sulfur battery positive electrode materials.

The invention discloses a humidity sensor of combination of polyelectrolyte and intrinsic conducting polymer and the fabricating method. It adopts glass ceramic as substrate and multiple pairs of interdigital golden electrodes are set on it. Humidity film of combination of poly 4-vinypyridine with cross-linking quaternary amination and polypyrole is coated on surface of glass ceramic and interdigital golden electrode. The invention is provided with simple preparing process and low cost. It is suitable for mass production especially. Prepared humidity sensors are all provided with moderate resistance, high sensitivity, good linearity, quick response, good recurrence, strong stability and measuring in room temperature so on in wide humidity range, especially in circumstance with middle-low humidity (0-60%). It can be applied in production process of industry and agriculture, storage and accurate measurement and control for circumstance humidity when air circumstance is monitored.

The present invention relates to a controllable preparation method of a nitrogen-doped porous carbon-supported metal monoatomic material, and belongs to the technical field of material science and engineering. According to the present invention, porphyrin and a metalloporphyrin are polymerized through a polymerization reaction. The proportions of the porphyrin and the metalloporphyrin are regulated to regulate a metal content (0.06-4.00wt%), and monoatomic metal types (A type, AB type, ABC type) are regulated by regulating different types of metalloporphyrins. According to the present invention, controllable preparation of a metal monoatomic material is realized with good expansibility and reproducibility; meanwhile, the problems of low metal content, few types and the like in the prior art are solved, and researches in the related fields such as the synthetic methodology of metal monoatomic materials and the like.

The invention relates to a bimetal organic framework material adsorbent applied to methane/nitrogen separation and a preparation method thereof. The bimetal organic framework material adsorbent is a compound with super-molecular porous network structure, wherein the compound is formed by coordinating two metal ions with an organic ligand HCOOH under the action of an adjusting agent; at least one of the two metal ions is Ni(II); the coordination conditions of different metals are controlled by adjusting complexation of Ni(II) to obtain several bimetal organic framework materials with different metal ratios. The prepared adsorbent has rich micro-porous structures; the purpose of adjusting pore properties microscopically is achieved; the NH4/N2 separation effect is excellent; the material is simple to prepare and low in cost, and is extremely applicable to development and recycling of low-quality methane separated under low pressure.

The invention discloses silicon carbide ceramic with adjustable resistance and a preparation method thereof. The ceramic material mainly comprises a silicon carbide phase as a main phase, boron carbide as a sintering aid phase, and a carbon phase as a conductive phase, and the ceramic material can be prepared and has the bulk resistivity adjustable from 10<-2> to 10<8> Omega.cm. The silicon carbide ceramic has a density of 3.00 to 3.20 g/cm<3>. The core of the method is to coat the surface of silicon carbide raw material powder with a graphene-based material layer, and to adjust the content ofthe conductive phase in the silicon carbide ceramic to obtain the silicon carbide ceramic with adjustable bulk resistivity.

The invention discloses a method for synthesizing a nano-sized zeolite molecular sieve suitable for VOCs adsorption. The method includes the following steps that firstly, water and an organosilicone alkylation solvent are added into a container according to the formula and evenly stirred, then a non-ionic surfactant P123 and sodium fluoride are added according to the formula, the materials are evenly mixed, heated and stirred to remove methyl alcohol generated through hydrolysis of the organosilicone alkylation solvent, and a pretreatment solution is obtained; secondly, inorganic heteroatom salt and a template agent are added into the pretreatment solution according to the formula to prepare a uniform gel, then the gel is transferred into a stainless steel reaction kettle for sealed hydrothermal treatment, and turbid liquid is obtained; thirdly, the turbid liquid is subjected to suction filtration, washing, drying and calcinations, and a white powder product is obtained. The product prepared through the synthesis method is the zeolite molecular sieve which is large in specific surface area and high in crystallization degree and ultrahigh in hydrophobicity, has the advantages of being simple in process and low in production cost, and is suitable for VOCs adsorption.

The invention provides a B-Al-ZSM-11 zeolite catalyst in the methanol to propylene reaction and a preparation method of the B-Al-ZSM-11 zeolite catalyst. In the invention, the method includes the following steps: a boron source, an aluminium source, a silicon source, an alkali source, an inorganic salt, a template and water are used as raw materials; the raw materials are subjected to crystallization, filtration, washing, drying and roasting; the ZSM-11 zeolite simultaneously containing boron, aluminium and silicon in the skeleton is synthesized by one step. The synthetic process is simple, the degree of crystallinity of the product is high, the content of skeleton boron and aluminium can be adjusted, and the acid strength of a molecular sieve can be effectively controlled; the B-Al-ZSM-11 zeolite synthesized by the method can be used for catalyzing the methanol to propylene reaction, and is higher in propylene selectivity and product P/E ratio (molar ratio of propylene to ethylene in the product) compared with B-Al-ZSM-5 or ZSM-11.

The invention belongs to the technical field of electric porcelain brown glaze toner, and particularly discloses brown glaze. The brown glaze comprises the following raw materials of, in parts by mass, 18-26 parts of potassium feldspar, 6-14 parts of albite, 2-8 parts of Inner Mongolia soil, 10-18 parts of Shaanxi kaolin, 7-12 parts of calcined talc, 0-3 parts of limestone, 25-33 parts of quartz powder, 1-1.6 parts of iron oxide red, 0.4-1.2 parts of chromium oxide and 7-12 parts of manganese oxide. The invention furthermore discloses a production method of the brown glaze. The production method of the brown glaze comprises the following steps of (1) raw material preparation, (2) ball-milling, (3) deironing treatment and (4) aging. According to the brown glaze produced by using the production method, the product yield is improved, the brown glaze has good comprehensive performance, and the production cost is effectively reduced so that the market requirements can be well met.

The invention relates to the field of biostimulants and particularly relates to a preparation method for a plant growth stimulant and an application of the plant growth stimulant. The plant growth stimulant is prepared through preparing a seed solution from yellow-ocher streptomyces, inoculating the seed solution to a fermentation tank containing a mixed culture medium of maize meal, soybean meal, glutamic acid, potassium dihydrogen phosphate, sodium chloride, seaweed powder and cerealose which are in a certain ratio, carrying out fermentation, and uniformly mixing fermentation broth of the yellow-ocher streptomyces with multivitamins, multiple amino acids and algal polysaccharides which are in a certain ratio. The plant growth stimulant disclosed by the invention can be added into organic fertilizers, water-soluble fertilizers and microbicides according to a certain ratio so as to carry out synergizing, increase yield, prolong drug effect duration and enhance immunity. The plant growth stimulant disclosed by the invention has the effect of playing a role in stimulating natural courses of plants, including being beneficial to the enhancement of nutrient absorption, nutritional effects, abiotic stress resistance and crop quality, promoting the growth of roots, stems and leaves of crops, and improving the resistance of the crops, can be used for stimulating cell division of plants, promoting formation of chlorophyll and enhancing photosynthesis of the plants and has the aims of promoting growth, advancing ripeness, keeping enough flowers and young fruits, increasing yield, improving crop quality and achieving the yield increase and high yield of the crops.

The invention discloses a preparation method of a cable sheath material of a mine cable. The method comprises the following steps: carrying out primary mixing on chloroprene rubber, chlorinated polyethylene and styrene butadiene rubber; adding polyurethane, stearinic acid, magnesium oxide, aluminum hydroxide, zinc oxide and organic montmorillonite into a primary mixed compound for secondary mixing; adding a vulcanizing agent, an antioxidant, N,N'-bis(furfurylidene)acetone, magnesium hydroxide and a promoter into secondary mixed compound for tertiary mixing; and carrying out sulfuration on a tertiary mixed compound to obtain the cable sheath material of the mine cable. The invention also brings forward a mine cable. The mine cable comprises a cable core, an insulation layer, a buffer layer and a sheath layer. The periphery of the cable core is wrapped by the insulation layer, the periphery of the insulation layer is wrapped by the buffer layer, and the periphery of the buffer layer is wrapped by the sheath layer. The obtained cable has the advantages of high strength and high toughness.

The invention provides polyelectrolyte hybrid hollow silica nano particles and a preparation method and application thereof. The insides of polyelectrolyte hybrid hollow silica nanoparticles are of hollow structures, and outer shell layers are hybrid structures of polyelectrolyte and silica; mesopores are formed in the shell layers. The preparation method comprises the steps of firstly synthesizing the silica nano particles with core-shell structures; then removing surfactant in the core-shell structures of the silica nano particles; finally etching the obtained mesoporous silica nano particles with the polyelectrolyte, thereby obtaining the polyelectrolyte hybrid hollow mesoporous silica nano particles. The preparation method is simple, and the obtained polyelectrolyte hybrid hollow mesoporous silica nano particles have good monodispersity, good biocompatibility and large specific surface area and pore volume, and can be applied to drug carriers and immunity adjuvant.

A method of preparing a plant cultivation medium by utilizing agriculture and forestry waste and the prepared cultivation medium are disclosed. The method includes 1) spraying the agriculture and forestry waste with water to adjust the water content of the agriculture and forestry waste, and 2) adding a fermentation catalyst, a microbe agent and brown sugar into the agriculture and forestry waste, fully stirring and fermenting. The plant cultivation medium is balanced in nutrition, high in nutrient contents, reasonable in structure, stable in physical properties, and convenient for plant absorption, meets plant growth needs and increases the survival rate of plant cultivation and ornamental effects.

The invention provides a carbon fiber reinforced resin film and a preparation method thereof. The resin film comprises a resin matrix and a carbon fiber dispersed phase doped in the resin matrix. The surface of carbon fiber in the carbon fiber dispersed phase is modified with carbon nanotube. The preparation method comprises the following steps: S1, amino-modifying the surface of carbon fiber and then carrying out electrophoretic deposition of carboxyl-modified carbon nanotube to obtain carbon nanotube surface-modified carbon fiber; and S2, cutting the carbon nanotube surface-modified carbon fiber obtained in the S1 into segments, immersing each segment of carbon fiber part into a polymer solution, taking out, bonding two segments of carbon fiber, and drying so as to obtain the carbon fiber reinforced resin film. According to the invention, content of carbon nanotube on the surface of the carbon fiber can be effectively adjusted so as to further regulate mechanical strength of the carbon fiber doped resin film and achieve the reinforcing effect of the carbon fiber on the resin film. The resin film of the invention has a broad prospect in practical application.