858results about How to "Ease of industrial mass production" patented technology

The invention discloses a preparation method of a graphene dispersion liquid. The preparation method of the graphene dispersion liquid comprises the following steps: placing an expanded graphite compacted electrode and a metallic or non-metallic electrode material in an electrolyte solution as an anode and a cathode respectively, and applying a voltage of 1-20V and/or a current having a density of 1-200mA/cm<2> between the anode and the cathode for carrying out an electrochemical reaction for 1-120min; and washing an anode product obtained after the electrochemical reaction, adding to a dispersant, and carrying out ultrasonic or/and mechanical stirring dispersion to obtain the graphene dispersion liquid. The invention also discloses a preparation method of a graphene film. The graphene dispersion liquid forms the graphene film on a substrate in a filter film forming mode or a coating film forming mode or a natural deposition mode. The preparation methods have the advantages of simple process, easy operation, high controllability, low cost and mild reaction condition, and are suitable for the industrialized large-scale production.

The invention relates to a pressure-reducing and injection-increasing agent for a water injection well of a low-permeability oilfield, and a preparation method and application thereof. The pressure-reducing and injection-increasing agent is prepared from the following components by weight: 2.0 to 6.5% of a multifunctional surface treating agent, 0.75 to 3.15% of hydrophobic nanometer silica or nanometer poly-silicon and 2 to 8% of a pH conditioning agent, with the balance being deionized water, wherein the multifunctional surface treating agent comprises, by weight, 30 to 80% of a nonionic surfactant, 2 to 25% of an anionic surfactant and 10 to 50% of an ampholytic surfactant. The pressure-reducing and injection-increasing agent is free of pollution to strata and can overcome the problems of high water injection pressure, unqualified injection allocation of a water injection rate and a short action period of injection increase in the later stage of development. The preparation method is simple in process, free of emission of pollutants and easy for industrial large-scale production.

The invention relates to a synergistic fertilizer, in particular to a green and environmental protection synergistic slow-releasing nitrogen fertilizer which is mixed in ammonium nitrogen fertilizers or urea, and a preparation method thereof. The fertilizer constituents are as follows: nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.005 to 0.1:0.0005 to 1; the biochemical inhibitor is a nitrification inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic nitrogen fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing nitrogen fertilizer.

The invention discloses a preparation method of a superfine nanometer lithium iron phosphate electrode material, comprising the following steps of: firstly, taking an iron source compound and a phosphorus source compound as raw materials to obtain nanometer ferrous phosphate as a precursor; and secondly, using the ferrous phosphate and the lithium source compound to prepare the superfine nano lithium iron phosphate electrode material. The preparation method of ferrous phosphate, disclosed by the invention, has a simple production process; the obtained nanometer ferrous phosphate can be used for preparing the high-purity superfine nanometer lithium iron phosphate; and the ferrous valence state is not changed when the ferrous phosphate is used for preparing the lithium iron phosphate, thus, no carbon source compound or reducing agent needs to to be added to change the iron valence state, and then the carbon-coated lithium iron phosphate or non-carbon-coated lithium iron phosphate can be directly prepared. The nanometer lithium iron phosphate manufactured by the nanometer ferrous phosphate precursor has excellent performance, good discharge capacity and voltage platform performance under high capability and high multiplying power, and long cycle life.

The invention relates to a zinc-graphene heavy-duty anti-corrosive coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component B contains a curing agent; the component A contains the following components in percent by mass: 10-20% of a graphene epoxy resin solution, 0.5-2% of an anti-settling agent, 15-30% of zinc powder, 2-10% of aluminum powder, 35-50% of an antirust pigment filling material and 5-10% of an organic solvent; the graphene epoxy resin solution comprises the following components in percent by mass: 1-10% of graphene, 80-90% of an epoxy resin solution, 5-10% of an organic solvent and 1-2% of an additive. Graphene is added into the coating, so that the zinc content is reduced, zinc oxide smog generated during welding is reduced, and the coating is super-strong in water resistance and corrosion resistance. When the coating is prepared, graphene is subjected to pre-soaking treatment to be uniformly dispersed on epoxy groups of epoxy resin, so that the defect that graphene is easy to agglomerate is overcome, the excellent performance of graphene is fully played, and an intermediate with the combination of the advantages of zinc and graphene is obtained. The salt-fog resistance time of the coating prepared by the intermediate is more than 1200 hours.

The invention relates to three-dimensional network graphene for a lithium battery and a preparing method thereof. The preparing method of the three-dimensional network graphene for the lithium battery comprises the steps that firstly, high-purity expanded graphite, an anion type organic surface active agent, a dispersing agent, an antifoaming agent and a solvent are fully mixed, so that thick few-layer graphene slurry is obtained; liquid swelling high polymer materials are added, composite slurry is obtained after even mixing, and the composite slurry is coated in holes of porous foam materials; finally, the porous foam materials are fully carbonized and then are further processed, so that three-dimensional network graphene powder is obtained. The graphene prepared through the method is of a porous network structure on the microscopic scale, and thus the graphene is high in specific surface area, high in conductivity, high in heat conductivity and good in electrolyte wettability; when the graphene is mixed into positive electrode and negative electrode materials of the lithium battery for manufacturing pole pieces, the electron conduction can be effectively improved, the internal resistance of the battery can be greatly lowered, the amount of heat generated when the battery is charged and discharged is educed, the power density, the energy density and the safety of the battery are further improved, and the service life of the battery is prolonged.

The invention belongs to the technical field of preparation of graphene dispersing liquid and relates to a preparation method of the graphene dispersing liquid. The preparation method includes: dissolving a dispersing agent into a solvent to prepare a dispersing agent solution, adding a graphite raw material into the dispersing agent solution, performing primary high-shearing liquid phase stripping through high shearing force to obtain primarily stripped graphite slurry, applying pressure of 10-400MPa to the primarily stripped graphite slurry, then allowing the primarily stripped graphite slurry to pass a tiny slit and intensely collide with a breaking valve so as to allow the primarily stripped graphite slurry to be stripped by high shearing force and collision force for the second time, and allowing graphene to be evenly dispersed in the solvent to obtain the even graphene dispersing liquid. The preparation method has the advantages that the prepared graphene dispersing liquid is high in quality and good in evenness and stability, and the method is environmentally friendly in production process, capable of reducing environment pollution, simple in production process, easy in large-scale industrial production, high in yield, low in cost and friendly in application environment.

The invention discloses a preparation method of telescopic MXene/graphene composite aerogel with a high electromagnetic shielding effect. According to the method, the three-dimensional netlike composite aerogel with a rich pore structure is formed through compounding MXene and reduced graphene oxide, inducing the reduced graphene oxide and the MXene by utilizing a modifying agent and performing cold and dry treatment. The preparation method disclosed by the invention has the following advantages that the telescopic MXene/graphene composite aerogel with the high electromagnetic shielding effectcan be obtained through uniformly mixing the reduced graphene oxide and MXene dispersing liquid, introducing the modifying agent and finally performing the cold and dry treatment, which reduces the stacking density of the MXene, constructs a new macroscopic appearance, has extremely excellent mechanical property and scalability and promotes the application feasibility of the MXene in aerospace field.

The invention relates to a preparation method of an in-situ grown graphene reinforced metal-based composite material. Carbon-containing organic matter and metal or metal alloy powder are dissolved and mixed in a solvent, mechanically stirred, heated at the temperature of 50-150 DEG C and mixed, the solvent is evaporated, and prefabricated powder is obtained through vacuum drying at the temperature of 50-100 DEG C and grinding; and through the powder metallurgy technique of a hot-press forming method or a cold-press-sintering method or an SPS sintering method, the prefabricated powder is pressed and formed, the carbon-containing organic matter is transformed into graphene, and the three-dimensional graphene/metal-based composite material is obtained. The preparation method is simple, easy to implement and short in preparation cycle, and industrialized batch production is easy; and in addition, the graphene directly grows on a metal matrix in the preparation process, the crystallisation degree of the graphene in the obtained graphene reinforced metal-based composite material is high, the number of defects is small, and the dispersity is good. The preparation method has potential application prospects in the composite material field, the functional material field and the like.

The invention discloses a bottom unified aqueous anticorrosive paint and its preparation method. the paint is composed of the following ingredients, by weight, 15-30% of water, 0.1-0.5% of a dispersant, 0.4-0.8% of an antifoaming agent, 2.5-25% of modified zinc phosphate, 5-25% of iron oxide red or mica iron oxide, 5-25% of a body filler, 40-70% of a film-forming emulsion, 0.1-1.5% of a thickening agent, 1-4% of a film-forming auxiliary agent and 0.2-1.5% of a flash-rust inhibitor. According to the bottom unified aqueous anticorrosive paint, each ingredient with specific weight percentage interacts with each other. Thus, comprehensive performance of the paint is raised, and in particular, anticorrosive performance of the paint is excellent. The paint is environmentally friendly. Problems of heavy odor, high pollution and the like existing in a traditional oil paint are solved. Meanwhile, each anticorrosion index is guaranteed. The product has simple preparation and construction technologies, is easy to carry out, is easy for large-scale industrial production, and has a wide application prospect.

The invention discloses a PLA/PBAT biodegradable composite material, which is prepared from the following components in percentage by weight: 60-75% of a polylactic acid, 60-75% of poly(adipic acid)/butylene terephthalate, 1-5% of poly (caprolactone), 5-15% of an ethylene-vinyl acetate copolymer, 1-5% of an ethylene-vinyl acetate copolymer and polylactic acid graft copolymer, and 1-10% of vegetable oil polyols. The PLA/PBAT biodegradable composite material disclosed by the invention is excellent in tensile strength and toughness, good in chemical stability, and easy to process, and in addition, the material is biodegradable. The invention also discloses a preparation method of the PLA/PBAT biodegradable composite material, which can be implemented through the existing equipment twin-screw extruder, therefore, the method is easy to implement, strong in maneuverability, and easy to realize industrialized mass production, and has good economic benefits and broad application prospects.

The invention relates to a nitrogen synergistic fertilizer, in particular to a synergistic slow-releasing urea fertilizers and a preparation method thereof. The fertilizer constituents are as follows: urea nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the urea nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.001 to 0.1:0.0005 to 1; the biochemical inhibitor is a urease inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic urea fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing urea fertilizer.

The invention discloses an aqueous anticorrosive heat-insulation paint which is prepared from the following raw materials of, by weight, 5-40% of water, 0.5-2% of an antifreezing agent, 0.1-0.5% of a dispersant, 0.4-0.8% of an antifoaming agent, 0.5-7% of a thickening agent, 0.2-0.5% of a pH conditioning agent, 2.5-25% of metal modified zinc phosphate, 3-25% of cenosphere, 15-45% of a body filler, 20-50% of a film forming emulsion, 0.5-5% of a coalescing agent and 0.5-1.5% of a flash-rust inhibitor. The invention also discloses a preparation method of the aqueous anticorrosive heat-insulation paint. The aqueous anticorrosive heat-insulation paint provided by the invention is a single-coating multifunctional paint, has excellent anticorrosive performance and heat-insulation performance to guarantee various anticorrosion and heat-insulation indexes, is beneficial to popularization and utilization, and has a wide application prospect. The method provided by the invention has a simple product preparation and construction process, is easy to carry out, and is easy for industrial large-scale production.

The invention discloses a method for synergistically improving the arc ablation performance of a CuW contact material. The method comprises the steps that firstly, spherical electrolytic copper powderis rolled into a sheet, then reduced tungsten powder is added for ball milling, even mixing is conducted, and tungsten-copper modified mixed powder is obtained; secondly, expanded graphite is sequentially subjected to low temperature intercalation oxidation, medium temperature intercalation oxidation and high temperature intercalation oxidation, and graphene oxide is obtained; thirdly, the tungsten-copper mixed powder and the graphene oxide are added into an ethanol-water mixed solution to be mixed evenly, drying is conducted, graphene oxide/tungsten-copper composite powder is obtained and then subjected to low-temperature thermal reduction, and reduced graphene oxide/tungsten-copper composite powder is obtained; and fourthly, the reduced graphene oxide/tungsten-copper composite powder issubjected to discharge plasma liquid phase sintering, and the CuW contact material is obtained. The graphene oxide is added into the tungsten-copper modified mixed powder, thermal reduction is conducted at first, the reduced graphene oxide is obtained, then discharge plasma liquid phase sintering is conducted, tungsten carbide nanoparticles are generated, and the arc ablation performance and mechanical performance of the CuW contact material are synergistically strengthened through the reduced graphene oxide and the tungsten carbide nanoparticles.

The invention relates to a preparation method of a graphene-carbon nanotube aerogel supported nano-silicon composite electrode material. The preparation method comprises the following steps: preparing a graphene oxide dispersion liquid, respectively preparing nano-silicon and a carbon nanotube dispersion liquid, carrying out ultrasonic dispersion, adding a surfactant to the carbon nanotube dispersion liquid, adding the nano-silicon and the surfactant-containing carbon nanotube dispersion liquid to the graphene oxide dispersion, carrying out ultrasonic dispersion to obtain a uniformly mixed dispersion liquid, freeze-drying the uniformly mixed dispersion liquid, calcining the obtained dried powder in protection atmosphere, and naturally cooling the calcined powder to obtain the graphene-carbon nanotube aerogel supported nano-silicon composite electrode material. The composite electrode material prepared in the invention has the advantages of high capacity, high efficiency, good cycle performances and high safety; and the method is simple, is easy to implement, and is suitable for industrial large-scale production.

The invention discloses a method for modifying a perovskite solar cell light-absorbing layer, and belongs to the field of the solar cell. The method comprises the steps of 1) preparing a hole barrier layer on a substrate; and 2) adding a light-absorbing layer precursor liquid in a dropwise manner on the surface of the substrate with the hole barrier layer, performing spin coating, after the solvent of the light-absorbing layer precursor liquid is fully evaporated, adding modifying liquid in a dropwise manner and continuing to perform spin coating, wherein the modifying liquid is mixed liquid of organic solvent of a soluble light-absorbing layer material and organic solvent of an insoluble light-absorbing layer material; the volume ratio of the organic solvent of the insoluble light-absorbing layer material to the organic solvent of the soluble light-absorbing layer material is 16-21, and the volume ratio of the total volume of the modifying liquid to the volume of the light-absorbing layer precursor liquid is 1-1.5; and drying after completing spin coating. According to the light-absorbing layer preparation process, the light-absorbing layer is modified by the modifying liquid; namely, a perovskite layer is subjected to film formation firstly; then the modifying liquid is adopted to dissolve and modify the light-absorbing layer so as to enlarge the crystal grains of the light-absorbing layer and reduce the porosity of the light-absorbing layer; and consequently, the performance of the perovskite solar cell is effectively improved.

The invention relates to polyester resin for low-temperature cured powder paint and a preparation method of the polyester resin. The polyester resin is characterized by comprising the following ingredients in percentage by mass: 0 to 10 percent of ethylene glycol, 10 to 40 percent of neopentyl glycol, 0 to 8 percent of 1,6-ethylene glycol, 0 to 5 percent of 1,4-cyclohexanedimethanol, 20 to 60 percent of terephthalic acids, 2 to 15 percent of adipic acid, 0.05 to 0.2 percent of monobutyltin oxide, 0.02 to 0.15 percent of triphenyl phosphate, 0 to 5 percent of adipic acid, 2 to 40 percent of m-phthalic acid and 0 to 5 percent of methacrylic acid. The polyester resin and the preparation method have the advantages that the curing at the low temperature condition of 130 DEG C to 140 DEG C can be realized, in addition, the storage stability is good, and the like.

The invention relates to a processing method for modifying atmospheric pressure on the surface of a carbon nanometer tube and a normal temperature plasma, which comprises the following steps: placing the carbon nanometer tube on a special transmission device of a plasma processing device; spraying the e plasma to the surface of the carbon nanometer tube under the atmospheric pressure and the openenvironment, so that the carbon nanometer tube moves in the atmosphere of the plasma, wherein the processing power is 10W to 5000W and the time is 0.01s to 6000s; and then generating the surface modification of the carbon nanometer tube. The invention can directly improve the surface property, the structure and the shape of the carbon nanometer tube for one step under the atmospheric pressure andthe normal temperature, and has the advantages of strong process controllability, simple replacement process and less environmental pollution by adopting the dry process. The effect of isosexual repulsion is generated on the particle surface of the carbon nanometer tube, so that the possibility on the reunion of nanometer particles is reduced.

The invention discloses a PC/PET (polycarbonate/polyethylene terephthalate) alloy material which has low shrinkage and is easy to coat. The PC/PET alloy material comprises components in percentage by weight as follows: 30%-60% of PC, 15%-35% of PET, 15%-20% of acrylonitrile-butadiene-styrene, 10%-25% of inorganic filler, 1%-10% of a toughening agent, 0.1%-1% of a chain extender and 0.2%-4% of an assistant. According to the PC/PET alloy material, specific quantities of the components are combined to produce ideal synergistic effect, so that the alloy material not only has excellent comprehensive mechanical property, but also has ultra-low shrinkage rate, a product does not require polishing processing, primer coating can be directly avoided, and the coating cost is saved. The invention discloses a preparation method of the PC/PET alloy material. According to the preparation method, the preparation can be realized by adopting conventional equipment, namely a double-screw extruder, and through control of feeding position and temperature, the preparation is simple and easy to control.