476results about How to "Uniform film formation" patented technology

The invention discloses an electrolyte additive and an application thereof in a lithium ion battery. The electrolyte additive comprises a polynitrile-based compound and a compound comprising a sulfur bond and an oxygen bond. When the electrolyte additive is applied to the lithium ion battery, good cycle life, good low-temperature discharging property and good high-temperature storage property of the lithium ion battery under the high voltage still can be maintained.

The invention provides zinc oxide-based nanoparticle ink. The zinc oxide-based nanoparticle ink comprises a solvent and zinc oxide-based nanoparticles uniformly dispersed in the solvent. The zinc oxide-based nanoparticle ink comprises, by mass, 0.01 to 20.00% of the zinc oxide-based nanoparticles and 80.00 to 99.99% of the solvent. The zinc oxide-based nanoparticle ink is characterized in that the solvent comprises at least one alcohol ether ester compound. The zinc oxide-based nanoparticle ink can solve the problem that the existing zinc oxide-based nanoparticle ink is not suitable for ink-jet printing and has poor film-forming quality. The invention provides an electroluminescent device. An electron transport layer of the device is prepared from the zinc oxide-based nanoparticle ink through ink-jet printing.

An embodiment of the invention provides a QLED and a preparing method thereof, and a display device and a preparing method thereof, which relate to the technical field of display, and can avoid a functional layer of an organic material positioned below a quantum dot layer from being corroded and enable the quantum dot layer to be uniform in film forming. The preparing method of the QLED comprises: forming a first electrode, a first functional layer, the quantum dot layer, a second functional layer and a second electrode on a base substrate in sequence; after the first functional layer is formed from the organic material and before the quantum dot layer is formed, the preparing method further comprises: forming a buffer layer made from a polar organic solvent; on the basis, forming the quantum dot layer which includes: forming a solution containing quantum dots and a nonpolar organic solvent above the buffer layer by adopting an ink-jet printing manner; evaporating the solvent by an evaporation process to form the quantum dot layer. The preparing method is used for the QLED.

The invention relates to a micro-nano blocking lubricant for a drilling fluid and a preparation method thereof and belongs to the field of oil and gas field drilling and oilfield chemical auxiliary agents. The micro-nano blocking lubricant for the drilling fluid is prepared from the following components in parts by weight: 100-200 parts of a nano emulsion and 100 parts of composite graphite micropowder. The micro-nano blocking lubricant for the drilling fluid also contains a dispersant. The nanoemulsion is prepared from components including paraffin, white oil, a composite emulsifier, a co-emulsifier and water by a phase inversion emulsification method. The micro-nano blocking lubricant for the drilling fluid can resistant the temperature of 150 DEG C, does not have adverse effects to viscosity of the drilling fluid, can reduce the filter loss of the drilling fluid remarkably, improve the quality of mud cakes remarkably, reduce the frictional resistance of a drilling tool and improve the mechanical drilling speed, and can bridge and block micro-cracks of shale quickly by means of a small size effect to prevent solid particles and a filtrate from invading the stratum to achieve a good blocking effect, so that the micro-nano blocking lubricant for the drilling fluid is particularly suitable for blocking fine throats which are 0.05-50[mu]m.

The invention discloses a preparation method of a nano antimony tin oxide (ATO) transparent insulation film. The method comprises following steps: 1) preparation of a nano ATO slurry: mixing an ATO nanopowder and a dispersant according to proportion and stirring thoroughly, and regulating a pH value to prepare the nano ATO slurry; 2) preparation of a nano ATO thermal insulation coating: mixing the nano ATO slurry and aqueous polyurethane, adjusting a pH value, adding a leveling agent, a defoaming agent and a thickener for dispersion, so as to prepare a nano thermal insulation coating; and 3) preparation of a transparent insulation film: immersing a clean glass substrate in the prepared nano thermal insulation coating liquid, and preparing a transparent film on the glass substrate by using a spin coating method / Czochralski method / bar coating method. The nano ATO transparent thermal insulation film prepared by the method provided by the invention has high visible light transmittance and infrared barrier property, and is suitable for building thermal insulation glass. The film preparation process is simple, environment-friendly, low-cost, and can form a uniform film with large area.

The invention provides a preparation method for an in-plane uniaxial magnetic anisotropic film generated in a non-induction magnetic field, and relates to a soft-magnetic film material. The invention provides the preparation method for the in-plane uniaxial magnetic anisotropic film generated in the non-induction magnetic field. The soft-magnetic film material comprises the following components according to the atomic percentage: 92 to 98 percent of magnetic alloy or magnetic metal and 2 to 8 percent of non-magnetic metal. The preparation method comprises the following steps: assembling a substrate into a sputtering chamber, and installing an iron target and a non-magnetic metal target, or a ferrocobalt target and a non-magnetic metal target; starting a vacuum system for air extraction till the background vacuity of the sputtering chamber is above 5x10<-4>Pa; heating up the substrate to reach a preset temperature of the substrate; and introducing reaction gas into the sputtering chamber to make the target surface build up luminance, carrying out presputtering firstly, then starting a substrate rotating button when the luminance is stable, opening a substrate baffle, and finally carrying out sputtering deposition to obtain the in-plane uniaxial magnetic anisotropic film generated in the non-induction magnetic field.

The objection of invention is to provide a composition for organic electroluminescent element having a smaller amount of foreign substance. The invention is a composition for organic electroluminescent element, which is for forming at least one layer selected from the group consisting of a light emitting layer, a hole injection layer and a hole transportation layer, wherein the composition comprises an aromatic amine polymer having a weight average molecular weight of 3,000 to 1,000,000 and a solvent, and a Zn concentration in the composition is less than 0.5 ppm.

The invention provides a multi-functional degradable liquid mulching film which comprises the materials with the following weight percentage: a polymer of polyether glycol-polyvinyl alcohol-polyaspartate: 15.0 percent to 40.0 percent, an emulsifier: 1.0 percent to 5.0 percent, a disperse speader: 0.5 percent to 5.0 percent, a pH value regulator: 0.1 percent to 5.0 percent, an antifreeze: 1.0 percent to 5.0 percent, and water as the rest; after the mulching film being watered and sprayed on soil surface, the macromolecules thereof are combined with soil particles and a layer of black curing film can be formed on the soil surface rapidly which can restrain the soil water from vaporizing and prompt the soil to absorb more solar energy, thereby improving the earth temperature. The liquid mulching film completely degrades into a humic acid organic fertilizer, water and carbon dioxide which can be absorbed by crops; the degradation products effectively accelerate the formation of soil grain clusters; and the number of grain clusters with water stability is increased by 10 percent to 15 percent and the volume weight of soil can be decreased by 5 percent to 10 percent. If sprayed on the surface of sandy soil, the liquid mulching film can effectively slow down the infiltration of the water to reserve water, thereby saving the water consumption of irrigation. The liquid mulching film can replace plastic mulching films in a certain range and has a certain social meaning and market prospect.

The invention discloses a water-based release agent and a preparation method thereof. The formula of the water-based release agent comprises the following components in parts by weight: 25 to 35 parts of modified water-based acrylic resin, 50 to 70 parts of deionized water, 1 to 4 parts of a crosslinking agent, 0.1 to 0.5 part of a defoaming agent, 1 to 5 parts of glycol. 0.1 to 0.5 part of improved polyurethane and 0.1 to 0.6 part of ammonia water at the mass concentration of 15 percent, wherein the weight ratio of the modified water-based acrylic resin to the crosslinking agent comprises five groups. The preparation method of the water-based release agent comprises the following steps of: (1) mixing and stirring the modified water-based acrylic resin and the deionized water to prepare emulsion dispersed uniformly; and (2) adding the crosslinking agent, the defoaming agent, the glycol and the improved polyurethane into the emulsion, stirring to prepare coating, and adjusting the pH value of the coating to be 6.2 to 8.2 by using the ammonia water. The water-based release agent is not externally crosslinked with a protected object during use and is easy to remove after film formation; and an organic solvent is not adopted, so the water-based release agent is environment-friendly, pollution-free and low in cost.

The invention discloses a method and device for reducing volatile matters of an o-cresol-formaldehyde epoxy resin. The method comprises the following step of: performing a two-stage desolventizing step, including a coarse desolventizing step and a fine desolventizing step to remove a solvent and a high-boiling residue component from an o-cresol-formaldehyde epoxy resin. The device comprises a feed pump, a first pipeline mixer, a falling film evaporator, a gas-liquid separator, a primary removal extraction pump, a second pipeline mixer, a thin-film evaporator, a packing tower and a secondary removal extraction pump which are connected in sequence, wherein a part of an o-cresol-formaldehyde epoxy resin solution output by the gas-liquid separator returns to the first pipeline mixer through areflux pump; a steam inlet/outlet is formed in the second pipeline mixer; and both the gas-liquid separator and a film evaporator are provided with a volatile matter gas-phase outlet. According to the method and the device for reducing the volatile matters of the o-cresol-formaldehyde epoxy resin, volatile matters of a product can be reduced to be below 0.05 percent, and the performance of the product applied to an electronic molding compound can be improved remarkably.

The invention discloses a vertical falling-film heat exchanger outside a pipe, which comprises a heat exchanger shell, a reinforced heatexchange tube bundle, a film distributing device, a tube pass accommodating chamber, sight glasses, a fluid inlet and outlet pipeline and the like. The double-layer film distributing device is arranged at the top of a heat exchanger; and a fluid flows down uniformly along the outer wall of a pipe in a film shape through the film distributing device to take away heat of another fluid in a heat exchange tube or transfer the heat to another fluid in the heat exchange tube so as to realize heat exchange of two different fluids. Because a tangential-flow liquid introducing manner and the unique double-layer film distributing device are adopted for the heat exchanger, the problems of nonuniform film distribution, low effective heat exchange area and the like of the traditional falling-film heat exchanger are solved. By adopting the device, the mass transfer resistance of the fluid can be effectively reduced, the heat transfer and mass transfer capacities of the heat exchanger are remarkably improved, and the device can be widely applied to the industries, such as chemical industry, thermotechnical industry, light industry, food, pharmacy, metallurgy, sea water desalination and the like.

The invention discloses a quantum dot ink and a quantum dot color filter. Specifically, the quantum dot ink includes quantum dots, photodiffusion particles and an ester solvent with a ring structure.The quantum dots account for 10wt%-45wt% of the quantum dot ink. The quantum dot ink provided by the invention adopts ring structure esters as the solvent, and improves the dispersion stability of quantum dots and photodiffusion particles in ink. When the ink is used for inkjet printing, the process is smooth and nozzles are not blocked, the obtained quantum dot color filter has the characteristics of good flatness, uniform film and high emergent light brightness.

The invention discloses a quick forming method of a power type soft packaging polymer battery. The quick forming method comprises the following steps of (1), flatly putting the battery in a fixture, and exposing positive and negative lugs; (2), adjusting a pressure plate on the fixture, so that the battery can be pressed by the pressure plate, pressing the surface of the battery, and fixing well by adjusting a limiting screw; (3), respectively connecting positive and negative joints of a forming cabinet to the positive and negative lugs of the battery; (4), putting the battery and the fixture in a high-temperature oven, setting the temperature at 60 DEG C, and charging after carrying out heat preservation for 1h; and (5), taking out the fixture and the battery after charging, adjusting the fixture to further pressurize, pressing the surface of a battery cell, fixing well by adjusting the limiting screw, putting the fixture and the battery in the oven with the temperature of 85 DEG C, taking out the fixture and the battery after keeping for 2-4h, and standing at normal temperature for 24-48h; and completing the forming process after standing. According to the invention, medium and small ratio current formation of the battery is carried out; and the problem that an SEI film is poorly formed due to gas production, uneven contact and the like of a pole piece in the forming process is solved.

The invention relates to a preparation method of a printed display device. The preparation method comprises the following steps of S1, depositing a first electrode layer on a substrate; S2, preparing a pixel definition layer on the first electrode layer and forming pixel pits; S3, performing ink-jet printing of functional layer ink in the pixel pints, and then putting into a saturated vapor atmosphere of a second solvent to perform vapor treatment, wherein the functional layer ink comprises a functional layer material and a first solvent; putting the device after vapor treatment into a room temperature condition, and naturally drying in air or nitrogen environment; and next, performing heat treatment to form a functional layer; and S4, depositing an electron transfer layer and a second electrode layer on the functional layer, and performing packaging to obtain the printed display device. By virtue of the preparation method of the printed display device, the wettability of ink and pixel Bank can be improved, so that the ink can be subjected to uniform film forming in the whole pixel region, and generation of electric leakage can be suppressed effectively.

The invention discloses a humidity sensor and improvement and preparation of the humidity sensor based on graphene oxide. The humidity sensor is provided with a humidity sensitivity component based ona reduced graphene oxide material, a graphene oxide material is treated by hydrobromic acid solution to obtain the reduced graphene oxide material in the humidity sensitivity component, the humiditysensitivity component can respond to environment humidity, and the environment humidity is sensed. According to the humidity sensor, a treatment process of the key graphene material humidity sensitivity component in the humidity sensor and a micro-composition, a structure and the like of the correspondingly acquired reduced graphene oxide material are improved, the graphene oxide material is treated by the hydrobromic acid solution to obtain the reduced graphene oxide material or the graphene oxide material and a polycationic polymer alternately deposit to form a graphene oxide composite filmby an electrostatic inducement layer by layer self-assembly method, and the acquired humidity sensor can keep good stability, humidity sensitivity and humidity stickiness in high-humidity environments.

The invention discloses a method for preparing a large-area perovskite layer and a perovskite solar cell. The method comprises the following steps of coating a perovskite precursor solution on a substrate to form a perovskite precursor layer; adding a mixed anti-solvent, and carrying out annealing treatment to obtain the perovskite layer, wherein the mixed anti-solvent is a mixed solvent formed bymixing a solvent A and a solvent B; the solvent A is selected from any one of methylbenzene, chlorobenzene, dichloromethane, ethyl acetate, anisole and diethyl ether, the solvent B is selected from any one of methylbenzene, chlorobenzene, dichloromethane, ethyl acetate, anisole and monohydric alcohol with 3-6 carbon atoms, the solvent A and the solvent B are different, and a volume ratio of the solvent A to the mixed anti-solvent is 10%-90%. In the invention, a supersaturation degree of the perovskite precursor solution in a crystallization process is reduced by using the mixed anti-solvent so that crystallization nucleation sites are uniformly generated, the perovskite thin film with uniform film formation and a large grain size is finally obtained, and a good application prospect is possessed in the field of preparation of large-area perovskite devices.

The present application discloses a perovskite quantum dot ink. The perovskite quantum dot ink comprises 0.1-20 wt% of perovskite quantum dots, 70-90 wt% of a solvent and 0-5-10 wt% of a cationic dispersant. The addition of the cationic dispersant increases the dispersion concentration and dispersion stability of the perovskite quantum dots in the ink. The perovskite quantum dot ink achieves a smooth process when applied to inkjet printing, and makes an obtained luminescent film have excellent properties.

A microwave plasma reactor for manufacturing synthetic diamond material via chemical vapour deposition, the microwave plasma reactor comprising: a plasma chamber; a substrate holder disposed in the plasma chamber for supporting a substrate on which the synthetic diamond material is to be deposited in use; a microwave coupling configuration for feeding microwaves from a microwave generator into the plasma chamber; and a gas flow system for feeding process gases into the plasma chamber and removing them therefrom; wherein the gas flow system comprises a gas inlet nozzle array comprising a plurality of gas inlet nozzles disposed opposite the substrate holder for directing process gases towards the substrate holder, the gas inlet nozzle array comprising: at least six gas inlet nozzles disposed in a substantially parallel or divergent orientation relative to a central axis of the plasma chamber; a gas inlet nozzle number density equal to or greater than 0.1 nozzles/cm², wherein the gas inlet nozzle number density is measured by projecting the nozzles onto a plane whose normal lies parallel to the central axis of the plasma chamber and measuring the gas inlet number density on said plane; and a nozzle area ratio of equal to or greater than 10, wherein the nozzle area ratio is measured by projecting the nozzles onto a plane whose normal lies parallel to the central axis of the plasma chamber, measuring the total area of the gas inlet nozzle area on said plane, dividing by the total number of nozzles to give an area associated with each nozzle, and dividing the area associated with each nozzle by an actual area of each nozzle.