75results about How to "Equipment condition is simple" patented technology

A process for preparing sandwich plate of foam metal by wrapping-rolling method includes such steps as proportioning metal powder and foaming agent and controlling their granularity, mixing them, wrapping the mixture under stirring to uniformity, cold rolling, hot rolling for compactness, and foaming. Its advantages are simple apparatus and high binding strength between foamed core and metal plate and specific rigidity. It can be used to damp sound and vibration and insulate heat.

The invention belongs to the technical field of preparation of selenium-containing polymers, and discloses a method for preparing polyselenourea / polyselenoamide through multi-component polymerizationof elemental selenium, isonitrile / alkyne and amine. The method comprises: carrying out a reaction on elemental selenium, a binary triple bond compound and a diamine in an organic solvent under an inert atmosphere, and subsequently treating to obtain a selenium-containing polymer, wherein the binary triple bond compound is binary isonitrile or binary alkyne, and the selenium-containing polymer is polyselenourea or polyselenoamide. According to the present invention, the method has characteristics of mild reaction conditions, high efficiency, energy saving, no catalyst, no by-product generation,atomic economy, green chemistry, low monomer toxicity, high atom utilization rate and high yield (more than or equal to 90%); the group has strong tolerance, and a variety of functional groups can beintroduced into the monomer; and the polyselenourea / polyselenoamide is stable, and can be degraded under specific conditions.

A method for preparing a fine-grained foam aluminum alloy belongs to the porous foam metal material field. According to the method, aluminum base non-crystal powder is evenly mixed with pore forming material and the mixture is compressed compactly to obtain the green compact; under the protection of argon and with the crystallization temperature of the aluminum base non-crystal powder, the process of isothermal annealing and crystallization and at the same time, the metal powder is sintered and cooled to the room temperature; water is used for dissolving the pore forming material and high-strength and tenacity foam aluminum alloy with fined matrix tissue. The invention fines the matrix tissue of the foam aluminum alloy according to the method of crystallization of non-crystal material; with the fine-grained consolidation action, the strength of the foam aluminum alloy is enhanced on the basis of not reducing the tenacity of the foam aluminum alloy.

The invention provides a geopolymer adsorption material and a preparation method thereof. The geopolymer adsorption material is prepared from the following raw materials in parts by weight: 15-35 parts of fly ash, 65-85 parts of metakaolin, 40-120 parts of water glass, 2-30 parts of sodium hydroxide and 30-90 parts of deionized water. The preparation method comprises the following steps that all the raw materials are uniformly mixed to obtain slurry, the slurry is injected into a mould to be alternately cured at a temperature of 80 DEG C and under a room temperature condition, and therefore, the geopolymer adsorption material is obtained. According to the geopolymer adsorption material and the preparation method thereof provided by the invention, the fly ash, the metakaolin and the like are taken as the raw materials to prepare the geopolymer adsorption material with high adsorption performance and low cost; on one hand, a new material is provided for removing heavy metal ions in sewage; on the other hand, the resource utilization of industrial waste can be realized, and the geopolymer adsorption material has a good application prospect.

The invention belongs to the technical field of preparation of continuous fiber reinforced ceramic based composite materials, and particularly discloses a preparation method of a low-cost and high-efficiency aluminum oxide fiber reinforced aluminum oxide composite material. The method comprises the following specific steps: firstly, preparing a stable aluminum oxide slurry, then brushing the aluminum oxide slurry on degummed aluminum oxide fiber cloth, molding after mould pressing, drying to obtain an aluminum oxide fiber reinforced aluminum oxide composite material rough blank, and finally, sintering to obtain the aluminum oxide fiber reinforced aluminum oxide composite material. The preparation method provided by the invention has the characteristics of simple process and short preparation period, and the prepared aluminum oxide fiber reinforced aluminum oxide composite material has excellent high-temperature mechanical properties and thermal stability.

The invention in particular relates to a method for improving tensile mechanical property of fibers and belongs to fiber modification technologies. The method comprises the following steps: taking papa-phenylene diisocyanate and ethidene diamine as precursors, and depositing a polyurethane film on the fiber surface by adopting an atomic layer deposition technique. Due to excellent shape preservation of the atomic layer deposition technique, the defects of the original fibers can be effectively reduced, and due to high elasticity of polyurethane, the original fibers can effectively buffer instantaneous mechanical changes in the tensile process, so that the tensile mechanical properties of fibers can be effectively reduced. The preparation method is simple, the deposition process is easy to control, the cost and energy consumption are low, and the method is pollution-free to the ecological environment and suitable for industrial production.

The invention discloses a graphene-containing lead alloy for lead storage battery grids. The graphene-containing lead alloy includes 0.015-0.15% of graphene, 1.0-1.5% of tin, 0.02-0.04% of aluminum, 0.05-0.1% of calcium and 98.21-98.915% of lead. A preparation method of the graphene-containing lead alloy comprises the following steps: putting 2 / 3 of lead in a lead melting pot, and heating to 680DEG C in order to melt lead; adding graphene to molten lead; adding pure tin strips and pure aluminum strips 20min later, and stirring and mixing for above 0.5h; adding lead sheath packaged calcium, pressing calcium into the bottom of the molten lead by using a bell jar with the bottom provided with leakage holes, slowly stirring and mixing for above 0.5h when the molten lead does not bubble, adding the residual lead into the lead melting pot, continuously stirring after the lead is completely molten, and carrying out ingot casting 1h later. The preparation method has the advantages of simplicity, reliability, simple structure of a used device, and low cost; and the grids made by using the lead alloy prepared through the method have strong creep and corrosion resistance, and can meet deep cycle and heavy current charge and discharge requirements.

The invention relates to a preparation method for a graphene like cobaltosic oxide nano film material and an application of an electrode slice. A cobalt salt and a sodium salt are respectively weighed and are dissolved in deionized water, and then a cobalt salt solution and a sodium salt solution are obtained; equal volume of the cobalt salt solution and the sodium salt solution are taken to be mixed, perform thermostatic water bath and be stirred uniformly, and then a mixed solution is obtained; ammonium water is added to the mixed solution, and then a cobalt ammonia coordination compound solution containing the sodium salt is obtained; hydrogen peroxide is dipped into the cobalt ammonia coordination compound solution then, hydro-thermal treatment is performed on the obtained mixed solution under sealing, and a black precipitate is obtained; and the black precipitate is washed successively via the deionized water and absolute ethyl alcohol and is dried under air atmosphere, and a graphene like cobaltosic oxide nano film is obtained. The graphene like cobaltosic oxide nano film is mixed with a conductive agent and a binder, and a slurry is obtained after stirring; and the slurry is uniformly coated on foam nickel after pretreatment in a scraping manner, and the electrode slice is obtained through drying and tablet compressing. An equipment condition needed by the preparation method is simpler, operation is convenient, preparation cost is low, and the preparation method is suitable for factory large-scale production.

The invention relates to the technical field of carburizing and quenching as well as deformation control of steel work-pieces, and particularly relates to a simple method for deformation control during the carburizing and quenching of large-diameter heavy-duty gears. In the method, the deformation control can be carried out on the carburizing and quenching of the steel work-pieces by adopting simple facilities under simple operation conditions, so as to reach the expected effect and improve the product quality. The method comprises the following steps of: normalizing of steel work-piece, carburization of the steel work-pieces placed in a direction A, normalization of the steel work-pieces placed in a direction B, quenching of the steel work-pieces placed in the direction B in a static oil, and tempering. The method has the significances of breaking through the situation that the deformation control of the carburizing and quenching of the large-diameter complicated heavy-duty face gears can be controlled only by adopting complicated facilities and complicated technological operations, and simultaneously developing a simple and practical way for the deformation control during the carburizing and quenching of the large-diameter complicated heavy-duty face gears.

The invention discloses a fire extinguishing agent and a preparation method thereof and aims to solve the problem that a conventional plant active flame-retardant fire extinguishing agent is complex in preparation process, requires repeated processing treatment and is high in production cost. According to the invention, Chinese yam, aloe, soya-bean cake and plant ash are mixed and fermented to form a viscous attachment, and the plant ash can play a role in mesh connection. The fire extinguishing agent provided by the invention has good fire extinguishing performance and can remarkably improve the fire extinguishing efficiency. The fire extinguishing agent can meet the requirements of large-area fire extinguishment of oil fields, oil tanks, oil pools, polar solvents and the like and has a wide application prospect. Meanwhile, the preparation method is simple, is easy to operate, can effectively reduce the production cost and has a remarkable progressive significance.

The invention provides a measurement method of a knuckle bearing starting torque measurement device and belongs to the technical field of mechanical measurement. The knuckle bearing starting torque measurement device is characterized in that an inner ring connection tool, an upper loading applying tool and a lower loading applying tool are included, and the upper loading applying tool and the lower loading applying tool are identical in structure; a knuckle bearing A is installed in a structure of the upper loading applying tool, then a knuckle bearing B is installed in a structure of the lower loading applying tool, the upper end of the inner ring connection tool is fixed to the upper loading applying tool through the knuckling bearing A, and the lower end of the inner ring connection tool is fixed to the lower loading applying tool through the knuckling bearing B. By means of the measurement method, the problem that when the knuckle bearings bear certain outer loads, an inner ring and an outer ring rotate relatively and a starting torque is difficult to measure is solved, the measurement method can also be used for measuring the starting torque when a metal roller bearing and a sliding bearing rotate relatively under the action of outer loads, the measurement method is easy and convenient to operate and needed equipment conditions are simple.

The invention discloses a preparation method for porous foamed steel and belongs to the porous foam metal field. The invention adopts copper metal balls with different diameters of which melting point is lower than that of the steel to be sintered into a precursor, takes the steel as a filtration body to permeate into the precursor through the method of pressure seepage flow, a composite body being obtained after cooling; then the composite body is heated to make the metal copper of the precursor to be melted away from the composite body, and the porous foamed steel is obtained. The invention has the characteristics of simple process, low cost, recycled materials and no pollution to the environment, and can realize the industrialization production.

The invention provides a plant active flame-proof extinguishing agent, which mainly comprises active water and plant composite flame-proof active agent. the active water is prepared mainly from grain stillage and plant ash through leaching. The weight ratio of the composite flame-proof activator and active water is 10-25 : 75-90.

The invention provides a method for improving a mechanical property of a medium-manganese steel welding joint. An additional pulse method capable of generating inner-layer nuggets is added after the pulse which is mainly used for connection is utilized, medium-manganese steel with the manganese element mass fraction of 4-13% can obtain two or more layers of nuggets at a welding point, and thus thepurpose of improving the joint strength of the welding spot is achieved. Compared with a traditional welding process which only obtains the single-layer nugget, after two or more layers of nuggets are formed, the grain shape in the original nuggets is changed, and the structure in the original nuggets and the heat affected zone changes, so that multiple structures exist at the same zone at the same time, and thus cracks can be better prevented from expanding; and therefore, under the occasion that the requirement for the joint strength is high, the welding process capable of forming the inner-layer nuggets has more application potential.

The invention relates to a preparation method of foamy copper for detection of sucrose concentration. The preparation method includes pretreatment of a polyurethane foam material, chemical copper plating, electroplating and sintering reduction. Twice coarsening is carried out during pretreatment, and ultrasonic vibration is employed to assist deposition of copper during electroplating. The foamy copper prepared by the invention has improved corrosion resistance. The foamy copper preparation process has the characteristics of speediness, reusable raw materials, simple preparation process, simple equipment condition, low cost, and improved production efficiency. The prepared foamy copper has the advantages of high porosity, large specific surface area and light weight.

The invention relates to a water-based filtrate reducer for a drilling fluid and a preparation method thereof. The preparation method comprises the following steps: successively adding monomers containing sulfo groups, organosilicon monomers containing unsaturated double bonds and polyanion fibers into water in proportion, adjusting a pH value to 7 to 8 and carrying out a reaction in the presence of an initiator. The water-based filtrate reducer provided by the invention has excellent filtrate reducing performance both in salt water and saturated salt water, and can resist a high temperature of 180 DEG C; the preparation method and desired equipment are simple; and the preparation method is easy to implement.

The invention relates to a lupeose detection method based on a foamy copper electrode. The method comprises the steps: preparing a plurality of lupeose solutions with different concentrations, quantitatively detecting the lupeose solution by utilizing a CHI-660 electrochemical analysis workstation, and connecting a detection electrode of the electrochemical analysis workstation and a silk-screen printing electrode modified by the special prepared foamy copper material. The analysis process of the detection method is efficient, rapid and high in resolution, the analysis result is accurate, the requirement for the equipment and expense is low, the reproducibility is good, and the application prospect is good. The corrosion resistance can be improved through the prepared foamy copper; the foamy copper preparation process is rapid, raw materials are reusable, the preparation process is simple, the equipment condition is simple, the cost is low, and the production efficiency is high; the porosity of the prepared foamy copper is high, the specific surface area is large, and the weight is light.

The invention relates to the field of environmental protection, and discloses a low-energy chemical field-driven organic pollutant degradation catalyst and an application thereof. The catalyst can efficiently degrade azo dyes, nitro compounds and various other organic pollutants without providing additional energy. The catalysis system uses formate as an assistant, metallic palladium, silver, gold, platinum and iridium are used as catalytic active main bodies and are supported on the surface of a carrier oxide, C-H bonds in formate radicals are broken when the formate ions in a mixed solutionof the formate and organic pollutants are in contact with a transitional noble metal interface in order to form reactive oxygen species, the reactive oxygen species include hydroxyl radicals, hydrogenperoxide radicals, carbonate radicals and the like, and the generated free radicals rapidly oxidize adsorbed organic matters into small-molecular substances which can be naturally degraded, or even nontoxic water, CO2 or carbonates. The catalyst has the advantages of extremely high efficiency in organic pollutant degradation treatment, low cost, stable catalysis system and high recycling rate.

A method for preparing porous foam nickel-titanium shaped memory alloy belongs to the field of porous foam metal. The invention uses copper metal balls with different diameters to sinter into a precursor, the melting point of the copper metal ball is lower than that of the nickel-titanium shaped memory alloy, the nickel-titanium shaped memory alloy is used as a seepage flow body and is permeated into the precursor through the method of pressure seepage flow, a complex is made after cooling, the metal copper of the precursor is melted and removed from the complex through heating the complex, and the porous foam nickel-titanium shaped memory alloy is made. The invention has the characteristics that the process is simple, the problems existing in prior art that the porosity is low, the porosity structure control and the process control are difficult are solved, the manufacturing cost is low, the materials are capable of being circularly used, the environmental is not polluted, and the industrialized production is capable of being achieved.

The invention particularly provides a modified starch fluid loss additive for drilling fluids, which is composed of the following components in percentage by weight: 60-80% of natural starch, 3-4% of bromoacetic acid, 5-15% of industrial alcohol, 2-7% of sodium hydroxide, 0.1-0.5% of diethylenetriamine, 0.5-1.0% of glacial acetic acid and the balance of water. The modified starch fluid loss additive for drilling fluids has the advantages of favorable water solubility, favorable compatibility and no biological toxicity, effectively lowers the fluid loss of the drilling fluid, is biodegradable, belongs to an environment-friendly product, satisfies the requirements of safe well drilling, productive formation protection, environment protection and the like for the fluid loss additive for drilling fluids in the oilfield large-scale development process, has the characteristics of low raw material cost, simple preparation method and simple required equipment and conditions, and is easy to implement.

The invention provides a copper-cobalt-sulfur nanosheet array / molybdenum foil composite material and a preparation method and application thereof. The preparation method comprises the following steps:subjecting urea, a soluble cobalt salt and a copper salt solution to a constant-temperature heating reaction and calcination so as to allow a nanosheet array consisting of CuCo2O4 nanowires to grow on a molybdenum foil substrate; then, with water as a solvent and thioacetamide as a sulfur source, preparing the CuCo2O4 nanosheet array / molybdenum foil composite material composed of particles. According to the invention, the catalytic sites of the material are increased, the contact area of an electrode material and an electrolyte is expanded, and the conductivity of the material are effectivelyincreased, so the prepared copper-cobalt-sulfur nanosheet array / molybdenum foil composite material has good catalysis performance in the reaction of water electrolysis for hydrogen evolution. Compared with the prior art, the invention has the following advantages: preparation process is simple; the catalyst serving as a catalyst for the water electrolysis hydrogen evolution reaction is excellentin performance; and the catalyst can be used for catalyzing the hydrogen evolution reaction in both acidic and alkaline environments and has good practical application value.

The invention discloses a method for synthesizing a ZnO nanometer stick array on a large scale and relates to a method for synthesizing the ZnO nanometer stick array. The method solves the problem that the synthesis of the conventional ZnO nanometer stick array needs to precast a ZnO seed layer on an underlayer and has a complex process. The method for synthesizing the ZnO nanometer stick array on the large scale comprises the following steps of: mixing zinc acetate and methenamine, and dissolving the mixture into deionized water to obtain mixed solution; and then simultaneously putting the mixed solution and a zinc plate into a high-pressure reaction kettle for heating reaction. The method of the invention has the advantages of simpleness and easy implementation, simple equipment, no need of modification of a zinc plate, high yield and low cost; the diameter of the obtained ZnO nanometer stick array is controllable and is between 20 and 60 nm; the ZnO nanometer stick array has good optical performance and hydrophobic performance, is suitable for industrialized large-scale production, has a water contact angle of between 105 and 115 degrees, is applied to the fields of gas-sensitive materials, sensors, photodetectors and the like, and can be used in cleaning equipment and solid oil.

The invention discloses a preparation method and application of a transition metal double hydroxide nano-film and a carbon nano-tube composite material. The preparation method comprises the followingsteps: weighing a metal salt, dissolving the metal salt in saturated oxygen deionized water, uniformly stirring in an oxygen atmosphere, adding carbon nano-tubes, continuously stirring and uniformly dispersing, adding an alkaline solution, increasing the oxygen gas flow, and stirring to obtain a precipitate, centrifugally cleaning the precipitate with deionized water and absolute ethyl alcohol, and drying the precipitate with a vacuum oven to obtain the nano-scale powder material. The preparation method is simple, simple and convenient to operate and low in cost, and has a good industrial application prospect.

The invention discloses an oil base drilling fluid wetting agent and application thereof, belonging to the technical field of oil and gas filed chemical engineering. The wetting agent comprises the following components by weight percent: 60%-90% of pine tar and 10%-40% of oleic acid, wherein the pine tar is vegetable pine tar, oleic acid is vegetable oleic acid, and the adding amount of the wetting agent accounts for 1%-3% of the weight of the oil base drilling fluid. The components of the wetting agent have wide source of feed and are cheap; the wetting agent is easy to prepare, has good wetting effect on multiple weighting materials, and can be widely used for the base oil of the oil base drilling fluid; the oil base drilling fluid prepared by using the wetting agent can meet the well drilling and construction requirements of unconventionality oil and gas reservoirs.

A process for preparing sandwich plate of foam metal by wrapping-rolling method includes such steps as proportioning metal powder and foaming agent and controlling their granularity, mixing them, wrapping the mixture under stirring to uniformity, cold rolling, hot rolling for compactness, and foaming. Its advantages are simple apparatus and high binding strength between foamed core and metal plate and specific rigidity. It can be used to damp sound and vibration and insulate heat.

The invention discloses a hydrothermal preparation method for a graphene-like cobalt hydroxide nano film which can be used as a super capacitor electrode material. The method comprises the following steps: hydrated cobalt salt and sodium salt are respectively weighed and dissolved in deionized water to obtain 50-200g / L cobalt salt solution and 10-80g / L sodium salt solution, and ammonia of which the mass concentration is 28% is measured for use; cobalt salt solution and sodium salt solution of the same volume are taken and mixed, constant-temperature water bath heating is performed on the mixed solution, and stirring is carried out to make heating uniform; the ammonia is added to the mixed solution obtained in the step two, stirring is carried out to make the ammonia and the mixed solution react with each other for 10-15min to obtain a cobalt-ammonia complex solution containing sodium salt; hydrothermal treatment is performed; an obtained pink precipitate is cleaned and centrifuged, and is dried by an air drying oven to obtain powder. The preparation method of the invention is simple, convenient to operate and low in cost, and has good application prospects.

The invention discloses a method for preparing fine-grain foamed aluminum alloy, which belongs to the field of porous foamed metal materials. This method is to mix aluminum-based amorphous powder and pore-forming agent evenly, and then compact and densify to obtain a green body. The powder is sintered, cooled to room temperature, and the pore-forming agent is dissolved with water to obtain a high-strength and tough aluminum alloy foam with a fine matrix structure. The invention refines the matrix of the foamed aluminum alloy through the method of amorphous crystallization, and utilizes the fine-grain strengthening effect to increase the strength of the foamed aluminum alloy without reducing the toughness of the foamed aluminum alloy.

The invention discloses a graphene-containing lead alloy for lead storage battery grids. The graphene-containing lead alloy includes 0.015-0.15% of graphene, 1.0-1.5% of tin, 0.02-0.04% of aluminum, 0.05-0.1% of calcium and 98.21-98.915% of lead. A preparation method of the graphene-containing lead alloy comprises the following steps: putting 2 / 3 of lead in a lead melting pot, and heating to 680DEG C in order to melt lead; adding graphene to molten lead; adding pure tin strips and pure aluminum strips 20min later, and stirring and mixing for above 0.5h; adding lead sheath packaged calcium, pressing calcium into the bottom of the molten lead by using a bell jar with the bottom provided with leakage holes, slowly stirring and mixing for above 0.5h when the molten lead does not bubble, adding the residual lead into the lead melting pot, continuously stirring after the lead is completely molten, and carrying out ingot casting 1h later. The preparation method has the advantages of simplicity, reliability, simple structure of a used device, and low cost; and the grids made by using the lead alloy prepared through the method have strong creep and corrosion resistance, and can meet deep cycle and heavy current charge and discharge requirements.