176results about How to "Improve uniformity and stability" patented technology

The invention relates to a preparation method for a multi-component net-shaped nanofiber membrane. The preparation method includes the detailed steps that step1, mixing and beating are performed on meta-position aramid fibers, halogen salt and organic solvent by the mass ratio of 1:0.004-0.4:2.996-18.6, and a meta-position aramid fiber solution is prepared through mixing; step2, functionality high-molecular polymers and the solvent are mixed by the mass ratio of 1:5.4-98.99, then nano-particles are added, and heating and mixing are performed to prepare a functionality high-molecular solution, wherein the mass fraction of the nano-particles in the solution is 0.01-5%; step3, the meta-position aramid fiber solution obtained in the step1 and the functionality high-molecular solution obtained in the step2 are mixed by the mass ratio of 1:0.05-0.5 in a dripping mode, and then ultrasonic treatment is performed to obtain a spinning solution; step4, under the conditions of 20 DEG C-30 DEG C indoor temperature and 20-70% relative humidity, the spinning solution is used for electrostatic spinning, and finally the multi-component net-shaped nanofiber membrane with a 5nm-20nm net-shaped nanofiber diameter and reaches over 95% in net-shaped structure coverage rate is obtained. The preparation technology is simple and low in cost, tensile strength of material reaches 100MPa-2000MPa, and the functionality advantage is remarkable.

A high-temperature and aerobic composting method for solid wastes which adopts a vertical ventilation device relates to a high-temperature and aerobic composting method for the solid wastes. The composting method aims at solving the problems that in the aerobic fermentation process, the conventional bottom ventilation method causes obvious uneven fermentation at the upper part and the lower part of a stacking body in a fermentation device, thus quality stability and uniformity of the fermented product are affected. In the composting method, middle air distribution pipes are fixed in a fermentation tank arranged at the lower side of an inverted ventilating slot; both the bottom part and the middle part of the fermentation tank adopt intermittent ventilation type, the ventilation time is 5-30 minutes, intermittent time is 15-120 minutes and ventilation rate is 0.03-2m<3>/(min m<3> mixing materials). The composting method increases the contact area between air and materials; air direction forms a reverse rotational flow, which increases residence time of fresh air in the fermentation device, thus improving the mass transfer efficiency, and the operational cycle of a single fermentation is shortened by over 1/4.

The invention discloses a slurry-homogenizing process for positive electrode slurry of a lithium ion battery, a positive electrode plate and the lithium ion battery, and belongs to the technical field of manufacturing of the lithium ion battery. The slurry-homogenizing process for the positive electrode slurry of the lithium ion battery comprises the steps of preparing an adhesive solution, stirring by a V-shaped stirrer, performing pre-mixing and stirring, performing high-speed stirring, performing viscosity adjustment, performing vacuum defoaming and the like; the positive electrode plate of the lithium ion battery comprises a positive electrode current collector and the positive electrode slurry for coating the positive electrode current collector; the positive electrode current collector adopts an aluminum foil; the positive electrode slurry is prepared by the slurry-homogenizing process for the positive electrode slurry of the lithium ion battery; and the lithium ion battery adopts the positive electrode plate of the lithium ion battery prepared by the method. By adoption of the slurry-homogenizing process, the solid content of the slurry is increased, so that solid granule friction in stirring can be improved, and the uniformity and the stability of the slurry can be improved; and by lowering a baking temperature in a drying oven in coating and drying, gaps formed between active material granules, conducive carbon granules and a binder can be reduced, thereby enhancing an adhesive effect and improving the performance of the lithium ion battery.

The invention discloses a graphene conduction oil additive and a preparation method thereof. The graphene conduction oil additive is prepared from the components of base solution conduction oil, graphene, a metal passivator, an antirust agent and antioxygen at a certain proportion and according to the processes of mechanical stirring, high speed stirring and ultrasonic dispersion. The graphene conduction oil additive can be directly added into conduction oil, and the defects of traditional conduction oil that gas or low-boiling-point substances such as micromolecular substances are produced by high temperature pyrolysis, and are polymerized to produce substances with higher molecular weight and even high-boiling-point substances such as coke, combustion is easily caused, and the like can be overcome. The graphene conduction oil additive can be used to effectively improve the heat conduction efficiency of the conduction oil, prevent the conduction oil from being partially over-heated during use, delay ageing and coking of the conduction oil, effectively improve conduction oil indexes such as flash point, pour point, kinematic viscosity and initial boiling point, prolong the service life of the conduction oil, and realize energy conservation and consumption reduction.

In a coating-type electron injection layer or electron transport layer using a metal oxide, the present invention aims at improving uniformity or stability of composition distribution and adhesion with another adjoining constituent layer, and improving film forming property, to thereby provide an organic electronic device and manufacture of the device whose efficiency is improved. In the organic electronic device having one pair of electrodes on a substrate, and having at least one organic layer between the electrodes, the electron injection layer or the electron transport layer is formed by application of a liquid material in which an alkaline metal salt and zinc-oxide nano particles are dissolved in alcohol.

The invention discloses an environment-friendly dust suppressant and a preparation method thereof, belonging to the field of dust suppression control. The dust suppressant consists of the following components: water, a base material, natural starch, a surfactant and a synergist at the mass ratio of 100 to (1-20) to (1-20) to (0.1-5) to (0.1-10). The preparation method of the dust suppressant comprises the following steps: adding 1-20 parts of the base material to 50 parts of the water, continuously stirring, and heating until continuously boiling for 30min; adding 0.1-5 parts of the surfactant to 25 parts of the water, stirring and uniformly mixing; adding the prepared surfactant solution to the boiled base material solution and stirring for 10min; adding 25 parts of the water, adding 1-20 parts of the starch when the temperature is controlled at 60 DEG C, continuously stirring, preserving temperature at 70 DEG C, and stopping heating when the starch is under the state of being completely gelatinized; adding 0.1-10 parts of the synergist and continuing to stir for 10min; and carrying out magnetizing treatment under a magnetic field intensity of 50mT for 1-5min, standing by and cooling to obtain the dust suppressant. The adopted raw materials are excellent in environmental and economic benefits.

The invention discloses a lithium ion battery insulating coating, a preparation method and a pole piece and a lithium ion battery using the insulating coating, and belongs to the technical field of lithium ion batteries. The effective components of the lithium ion battery insulating coating disclosed by the invention is formed by inorganic powder, an adhesive and a dispersing agent, wherein the three components generate a synergistic effect to improve the uniformity and stability of the insulating coating and improve the resistance uniformity of an insulating coating layer formed by the insulating coating, and the bonding strength with an aluminum foil matrix for the pole piece is high, thereby being unlikely to drop. The preparation method of the lithium ion battery insulating coating disclosed by the invention is easy to operate and is suitable for industrialized promotion and application, the inorganic powder, the adhesive and the dispersing agent are mixed in a high speed stirring and dispersing manner, so as to improve the uniformity and stability of the insulating coating, and the insulating coating is free of such phenomena as lamination and settlement after being stored for a long term. The lithium ion battery prepared by the insulating coating disclosed by the invention is good in safety performance and is stable in electrochemical performance.

The invention relates to the field of lithium batteries, in particular to a composite anode structure and a preparation method thereof, an all-solid-state lithium battery cell and an all-solid-state lithium battery. The composite anode structure comprises an anode layer and a passive coating layer formed on one surface of the anode layer; the anode layer comprises a metal mesh skeleton and lithiummetal composited into the metal mesh skeleton by means hot pressing; the all-solid-state lithium battery cell comprises the composite anode structure; the all-solid-state lithium battery comprises one or multiple all-solid-state lithium battery cells which are in series or parallel connection. According to the technical scheme, the all-solid-state lithium battery has the advantages of small volume change of lithium metal anodes and uniform electro-deposition in charging and discharging, forming of lithium dendrites can be suppressed effectively, and further cycle life and service life of theall-solid-state lithium battery can be prolonged effectively.

The invention discloses a tin dioxide/porous carbon composite lithium battery negative electrode material and a preparation method. The preparation method comprises the following steps: with fibroin and a high molecular polymer PAMAM as precursors, soaking a fibroin/PAMAM composite material after freeze drying treatment in a stannous sulfate aqueous solution for sufficient adsorption; performing high-temperature calcination to obtain the lithium battery negative electrode material. Sn<2+> and amino groups (mainly tertiary amino groups) in the PAMAM dendrimer can generate an effective complexing action so that the SnO2 nanoparticles are in-situ compounded on the surface of the fibroin/PAMAM; therefore, the yield of tin dioxide/porous carbon compound is higher, the uniform stability is better, and a lithium ion battery negative electrode material with high specific capacity and long cycle life is prepared finally.

The invention discloses a flow distribution device which comprises a flow distributor which is of a concave structure, wherein by virtue of the concave structure, a flow distribution cavity having an opening is formed; the flow distributor is arranged inside a pressure container in a hung mode and is located just below a nuclear reactor core; the opening of the flow distributor faces the nuclear reactor core; a central hole is additionally formed in the center of the bottom of the flow distributor in a penetrating mode and is formed just below the nuclear reactor core; a plurality of shunt holes are additionally formed in the flow distributor in a penetrating mode; under the actions of the central hole and the shunt holes, coolant can uniformly and stably flow into the nuclear reactor core, and the coolant is effectively prevented from generating a vortex under the action of the central hole, so that the uniformity and the stability of coolant flow distribution are further improved; meanwhile, since the vortex is prevented from generating, the safety and the reliability of the nuclear reactor are guaranteed and the probability of nuclear safety accidents is reduced. In addition, the invention also discloses a nuclear reactor component with the flow distribution device.

The invention provides a graphene oxide-carbon quantum dot complex modified anticorrosive coating and a preparation method thereof, and belongs to the technical field of coatings. The coating comprises the following raw materials: a graphene oxide-carbon quantum dot nano complex, water-based alkyd resin, titanium dioxide, barium sulfate, a dispersant, a defoaming agent, a thickening agent, an auxiliary agent and a curing agent; and the preparation method comprises the steps of preparing the graphene oxide-carbon quantum dot nano complex, preparing graphene oxide-carbon quantum dot slurry, preparing a pre-prepared coating, and adding the curing agent and performing mixing to obtain the anticorrosive coating. The anticorrosive coating provided by the invention has good corrosion resistance,high mechanical strength and strong environmental protection; and the preparation method has a simple process and is easy to operate.

An electromagnetic vibration device includes a vibrating plate, a suspending frame, upper and lower basin frames, a voice coil, and a magnetic loop system. Multiple voice coil fixing slots are uniformly distributed on the circumference of the vibrating plate corresponding to the inserting pieces of the voice coil, and the inserting pieces are passed through the voice coil fixing slots of the vibrating plate and fixed to the vibrating plate. One end of the lead of the voice coil is embedded in a groove on back of the vibrating plate and connected to the terminal of the lower basin frame.

The invention discloses a multi-component composite chelating agent for fly ash treatment. The multi-component composite chelating agent comprises the following components in percentage by mass: 10-60% of organic sulfide, 1-30% of inorganic sulfide, 1-20% of inorganic phosphate and 1-30% of an organic low-molecular-weight dispersing agent, with the balance being water. The invention provides the heavy metal composite chelating agent for waste incineration fly ash. The chelating agent is simple in preparation method; the composition of the agent is simple and easy to obtain; the chelating agentis comprehensive in component, is homogeneous and stable, can effectively stabilize almost all heavy metal ions in the fly ash for a long time, and allows the fly ash to reach standards for standardlandfill; the purpose of efficiently stabilizing heavy metal ions can be achieved by adopting a small amount of the chelating agent; and the chelating agent has the advantage of high cost performance.

The invention relates to a hydrophilic coating with a high antistatic property and a preparation method thereof. The hydrophilic coating with the high antistatic property is prepared from the following components in parts by weight: 0.3-1.8 parts of conductive filler, 0.5-1.5 parts of conductive auxiliary, 25-50 parts of silicate solution, 10-35 parts of nano sol, 13.4-42 parts of solvent and 0.5-1 part of auxiliary. In preparation, the components are mixed according to a proportion. According to thehydrophilic coating with the high antistatic property and the preparation method thereof provided by the invention, the partial discharge and the dust viscosity caused by poor electrical conductivity of a base material are solved; the hydrophilic coating has the advantages that the hydrophilic property is good, the using experience of a user is improved, the cleaning difficulty is reduced, and the like.

The invention relates to a proportion design method for an SMA (stone mastic asphalt) mixture. The proportion design method comprises the following steps: selecting initial testing graduation; calculating a theoretically minimum asphalt-aggregate ratio; determining a maximum asphalt-aggregate ratio; selecting an initial testing asphalt-aggregate ratio; selecting graduation according to the initial testing asphalt-aggregate ratio; determining optimal asphalt-aggregate ratio according to the selected graduation. According to the method, a range of the asphalt-aggregate ratio is obtained through theoretical calculation and testing, the initial testing asphalt-aggregate ratio is determined, the selected graduation is determined from three initial testing graduations, and the optimal asphalt-aggregate ratio is determined according to the selected graduation. The SMA mixture is not doped with fibers, so that the stability of the mixture, the economic efficiency and environmental protection property of construction and the production efficiency are improved.

The invention provides a long basalt fiber reinforced thermoplastic resin composite master batch. The long basalt fiber reinforced thermoplastic resin composite master batch comprises the following components in parts by weight: 10-60 parts of thermoplastic resin, 10-85 parts of long basalt fibers and 1-5 parts of a coupling agent, wherein the long basalt fibers in the length direction are distributed along the length direction of the composite master batch and have the same length as the composite master batch; and the length L of the composite master batch is more than or equal to 12mm and less than or equal to 25mm. The composite master batch is high in fiber content and long in fiber length, so that good impact resistance, corrosion resistance, salt spray resistance, vibration resistance and electrical properties can be achieved; the homogenization stability of the fibers and the resin in the composite master batch is good, and the fibers and the resin can be well and uniformly dispersed in the reprocessing process; the invention also provides a preparation method and application of the long basalt fiber reinforced thermoplastic resin composite master batch.

The invention relates to a preparation method for slurry of a super capacitor. The method comprises the steps of a) initial slurry preparation, wherein active carbon, conductive carbon, binder and solvent are placed in a double-planet mixer with a constant temperature system and stirred and mixed for 0.5 to 5 hours; b) slurry emulsification, wherein the prepared initial slurry is transferred into an emulsifying machine for emulsification; and c) vacuum bubble removal, wherein the emulsified slurry is transferred into a turnover tank with a rotating disk to carry out vacuum bubble removal. The preparation method for the slurry of the super capacitor can uniformly mix different substances in the super capacitor, is excellent in uniformity and high in stability, is not likely to be layered, and is free of bubbles.

A method and device for enhanced capture of target analytes is disclosed. This invention relates to collection of chemicals for separations and analysis. More specifically, this invention relates to a solid phase microextraction (SPME) device having better capability for chemical collection and analysis. This includes better physical stability, capacity for chemical collection, flexible surface chemistry and high affinity for target analyte.

The invention relates to a walnut black tea beverage and a preparation method thereof. The walnut black tea beverage is a vegetable protein beverage combining walnut kernels and black tea, meets demands of people for fashion, taste and nutrition and meets the demand of massive health. The preparation method of the walnut black tea beverage comprises the following steps: (1), preparing walnut pulp,a black tea solution, a compound emulsified thickener solution and a sweet solution; and (2), mixing the solutions prepared in step (1), and performing constant-volume processing and homogenization to obtain the walnut black tea beverage. According to the preparation method, the black tea solution is prepared from black tea leaves with a three-time soaking method, damage of nutrient components ofthe black tea leaves due to traditional ground black tea powder or black tea concentrated liquor is avoided, the nutrient components in the black tea leaves can be sufficiently extracted, and the walnut black tea beverage has the advantages of simple process, low cost and high cost performance.

The present invention provides a method for manufacturing a thin-film transistor substrate and a thin-film transistor substrate manufactured with the method. The method includes: (1) providing a substrate (20); (2) forming a gate terminal (22) having a predetermined structure on the substrate (20); (3) forming a gate insulation layer (24) on the gate terminal (22) and the substrate (20); (4) forming a metal signal line (26) having a predetermined structure on the gate insulation layer (24); (5) forming an oxide semiconductor layer (28) having a predetermined structure on the gate insulation layer (24); (6) forming a passivation layer (32) having a predetermined structure on the gate insulation layer (24), the metal signal line (26), and the oxide semiconductor layer (28); and (7) forming a source/drain terminal (34) having a predetermined structure on the metal signal line (26), the oxide semiconductor layer (28), and the passivation layer (32) so as to form a thin-film transistor substrate.

The invention provides nickel boron carbon intermediate alloy and a preparation method thereof, and relates to the technical field of a metal material. The nickel boron carbon intermediate alloy comprises the following components measured by mass content: 15.0-18.0% of B, 0.5-2.5% of C and the allowance of Ni. The alloy components and content are reasonably designed, so that the components of thenickel boron carbon intermediate alloy is uniform and stable, the proportion of alloying elements in the final product of nickel-base superalloy can be controlled better, and alloying can be improvedbetter. The invention provides the preparation method of the nickel boron carbon intermediate alloy. The preparation method can prepare the intermediate alloy by an aluminothermic method and vacuum smelting method, can improve the uniform stability of the components of the nickel boron carbon intermediate alloy and reduce the impurity content, and therefore obtains the nickel boron carbon intermediate alloy with accurate chemical components, high purity, low density and a low melting point.

The invention provides an atomization assembly for an electronic cigarette, a preparation method of the atomization assembly and an electronic cigarette. The atomization assembly comprises a porous body and a heating material layer; the porous body is used for absorbing aerosol to form a substrate; the heating material layer is combined to at least one part of the surface of the porous body; the heating material layer is formed by a composite material comprising a ceramic material and an electric heating metal material, wherein the ceramic material and the material forming the porous body have at least one same material component. According to the atomization assembly, the heating material layer prepared by compounding the ceramic material and the electric heating metal material is adopted, and the ceramic material plays a role in framework supporting, so that on one hand, the electric heating metal material is prevented from permeating or filling the pore channels of the porous body, and the permeability of the pore channels of the porous body is kept to a certain extent; on the other hand, the form of the heating material layer and the uniform stability of resistance are improved.