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

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.

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 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 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 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 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.

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 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.