281 results about "Dispersed media" patented technology

The invention discloses a graphene heat dissipation film and a preparation method thereof, and relates to the technical field of heat dissipation materials.The method comprises the steps that graphene powder and doped particles are mixed according to the mass fraction of 5-20%, deionized water is added to serve as a dispersion medium, 0.5-5% of a stripping auxiliary agent is added, treatment is conducted through high-speed shear dispersion and ultrasonic dispersion, and the graphene heat dissipation film is obtained. Uniform and stable modified graphene slurry is formed; coating the modified graphene slurry on a base material layer by layer according to a sequence from low thermal conductivity to high thermal conductivity, controlling the coating thickness by adopting a scraper or a spin coating process, and performing pre-drying treatment after coating each layer; the coated film is dried at the temperature of 80-200 DEG C, and the interlayer bonding strength is enhanced through chemical curing or thermocuring. Through innovative design of a modified graphene material and optimization of a multi-layer gradient structure, comprehensive improvement of thermal conductivity, mechanical properties and stability of the graphene heat dissipation film is realized.

The invention discloses a large-lamellar MXene material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out etching treatment on an MAX phase material by using an etching agent to obtain a multi-layer MXene material; and dispersing the multi-layer MXene material in a dispersion medium, and carrying out mechanical stress shear stripping to obtain the large-lamellar MXene material. According to the preparation method provided by the invention, the large-lamellar MXene material with the average transverse size of 4.2 microns or above can be obtained through high-yield stripping, the product quality is high, the yield is high, and industrial batch production is facilitated; the MXene film obtained based on the large-lamellar MXene material has good electromagnetic shielding capability and can be widely applied to the field of electromagnetic absorption shielding.

The invention provides copper slurry and a preparation method thereof, a copper electrode, a solar cell and a photovoltaic module, and belongs to the technical field of conductive materials. The copper slurry comprises a dispersion medium and copper particles dispersed in the dispersion medium, the copper particles comprise first copper particles, second copper particles, third copper particles and fourth copper particles; the particle size range of the first copper particles is 1-10 [mu] m, the particle size range of the second copper particles is 500-999 nm, and the particle size range of the third copper particles is 101-499 nm; the first copper particles, the second copper particles and the third copper particles are elementary copper particles, and the fourth copper particles are cuprous hydride nanoparticles; at least part of the fourth copper particles are attached to the surfaces of the first copper particles and / or the second copper particles and / or the third copper particles. Therefore, the fourth copper particles are interconnected among the three copper particles, more transmission channels are provided, the wire resistance is reduced, and the conductivity is improved.

A method of determining at least one property associated to a dry particulate substance is disclosed. The method comprises providing a sample support capable of containing a liquid medium; providing a dispersed sample comprising a portion of the particulate substance dispersed in a portion of liquid dispersing medium in said sample support, performing at least one scanning procedure comprising acquiring a plurality of light transmission images of an image acquisition area translated along a scanning path through said dispersed sample in said sample support using an image acquisition device having an optical axis; processing a plurality of the acquired images and determining said at least one property.

The invention belongs to the technical field of advertisement putting management, and discloses an intelligent polling method for advertisement putting, which comprises the following steps of: automatically pulling advertisement putting data from a plurality of media platforms through a timed task; analyzing an advertisement plan name, and extracting key information such as a vehicle type, a delivery position, a material number, a document number and a page number according to a preset rule; vehicle type matching inspection is carried out on the advertisement materials and the copywriting, vehicle type information in the materials and the copywriting is compared with vehicle type information in the advertisement plan name, and early warning is triggered when the materials and the copywriting are inconsistent with the vehicle type information in the advertisement plan name; according to the invention, through integration of multiple platforms, originally dispersed media are integrated in one platform for unified management, employees are prevented from repeatedly skipping to the platform for checking and operation, the rule is flexible, the inspection rule can be customized and configured by the employees, different inspection requirements of different users are met, and a large number of advertisement plans are subjected to in-project and timed inspection. Manual inspection is replaced by a machine, so that the efficiency of staff is greatly improved.

The invention discloses a glass ceramic solid electrolyte and a preparation method thereof, and the method comprises the following steps: respectively weighing Li2S, P2S5 and LiSCN according to a molar mass ratio of 3: 1: y to obtain preparation raw materials; wherein the range of y is from 0.1 to 0.55; placing the preparation raw materials, a dispersion medium and ball-milling balls in a ball-milling tank for ball-milling treatment, and initiating an amorphization reaction to obtain an intermediate product; wherein the ball milling rotating speed corresponding to the ball milling treatment is 300 to 600 rpm, and the ball milling time is 10 to 60 hours; and carrying out heat treatment on the intermediate product to obtain the glass ceramic solid electrolyte 3Li2S. P2S5. YLiSCN. The glass ceramic solid electrolyte 3Li2S. P2S5. YLiSCN disclosed by the invention is low in density, can keep the soft property and also has high ionic conductivity, and is beneficial to improving the energy density of the all-solid-state battery.

The invention discloses a coated diaphragm, which is characterized in that the coated diaphragm comprises a base membrane and a coating layer coated on at least one side surface of the base membrane, the coating includes solid particles. In addition, the invention discloses a preparation method of the coated diaphragm, which is characterized by comprising the following steps: a coating slurry preparation step: adding solid particles and an adhesive into a dispersion medium to form the coating slurry; and a coating step: coating at least one side surface of the base membrane with the coating slurry to form the coated diaphragm. The coated diaphragm disclosed by the invention has the characteristic of relatively low water content, and also has good diaphragm heat resistance, wettability and mechanical properties.

Provided are: a carbon nanotube dispersion liquid in which carbon nanotubes are dispersed while suppressing shortening of the lengths of the carbon nanotubes; negative electrode slurry using the carbon nanotube dispersion liquid; a negative electrode; and a secondary battery.　Provided are: a carbon nanotube dispersion liquid comprising carbon nanotubes, a dispersant, and a dispersion medium, wherein 50% or more of bundles of the carbon nanotubes have a length of 10 μm or more; negative electrode slurry containing the carbon nanotube dispersion liquid; a negative electrode; and a secondary battery.

The present invention relates to a polishing composition containing abrasive grains and a dispersing medium, in which a pH is less than 5.0, the abrasive grains are surface-modified silica particles in which an organic acid is immobilized on a surface thereof, a surface coverage of silanol groups present on the surface of the surface-modified silica particles is more than 0% and 6.0% or less, and an average primary particle diameter of the abrasive grains is 20 nm or more and 100 nm or less. According to the present invention, there is provided a means capable of improving a polishing removal rate of a silicon oxide film and polishing a silicon oxide film and a silicon nitride film at the substantially same rate.

The invention relates to a preparation method of a silicon nitride ceramic substrate and the silicon nitride ceramic substrate. The preparation method of the silicon nitride ceramic substrate comprises the following steps: preparing slurry by using silicon-based powder, a sintering aid and a dispersion medium; wherein the sintering aid comprises magnesium oxide sol, and the sintering aid further comprises at least one of rare earth oxide sol; carrying out tape casting on the slurry to obtain a green sheet; and sintering the green blank sheet in a nitrogen atmosphere. According to the preparation method of the silicon nitride ceramic substrate, the slurry is prepared by using the sintering aid comprising the magnesium oxide sol and the rare earth oxide sol, the silicon-based powder and the dispersion medium, silicon nitride powder and sintering aid particles in the slurry are relatively uniformly dispersed and are not easy to agglomerate, and a relatively uniformly dispersed green sheet can be obtained through tape casting; therefore, the strength consistency of different areas of the prepared silicon nitride ceramic substrate is relatively good, and the discreteness is relatively small.

The invention provides a reverse printing ink system based on a positive photosensitive mechanism and application thereof. The printing ink system comprises three types of products, namely black matte printing ink, high-reflectivity white printing ink and green printing ink, the production process of the ink system comprises the following steps: 1) synthesizing the film-forming resin; (2) sharing the film-forming resin with a pigment system, a dispersion medium and a functional additive; and 3) applying the reverse ink system to PCB manufacturing. According to the method, the characteristic of'dissolution in an exposure area 'is realized through positive light sensing, and the problems of scanning splicing printing, color difference and insufficient reflectivity in a traditional solder mask process are solved by matching with a special developing solution and a DI exposure light spot shaping technology; compared with the prior art, the reverse printing ink system has the advantages that the yellowing index, the resolution ratio, the heat resistance and the like are remarkably improved, and the reverse printing ink system is suitable for manufacturing a high-end mini LED / micro LED PCB (Printed Circuit Board).

A composition and a method are provided for graphene reinforced polyethylene terephthalate (PET). Graphene nanoplatelets comprising a suitable surface area are added to a dispersion medium for producing graphene reinforced PET. The average surface area may range between substantially 15 m2 / g and 750 m2 / g. In some embodiments, the dispersion medium may be comprised of ethylene glycol. The dispersion medium and graphene nanoplatelets are sonicated to disperse the nanoplatelets within the dispersion medium. The dispersion medium and graphene nanoplatelets are centrifuged to remove larger nanoplatelets that are not suitably dispersed within the dispersion medium. A supernatant solution of dispersed graphene nanoplatelets and dispersion medium is decanted and then used for polymerization of the graphene reinforced PET. The resultant graphene reinforced PET is comprised of a continuous matrix of PET with a reinforcement material comprising dispersed phase graphene nanoplatelets.

Provided is an electrode slurry carbon nanotube liquid dispersion which improves charge / discharge cycle characteristics. An electrode slurry carbon nanotube liquid dispersion which is one aspect of the present disclosure and contains 0.1-1.5 mass % of carbon nanotubes, a dispersion medium, and carboxymethyl cellulose, the viscosity of which at 100s−1 in a 3% aqueous solution is 2-200 mPa·s, wherein: the carboxymethyl cellulose content constitutes 50-250 parts by mass relative to 100 parts by mass of carbon nanotubes; the viscosity at 100s−1 is 50-200 mPa·s in a state in which the carbon nanotubes are dispersed; and the particle distribution according to the laser diffraction method exhibits a D10 of 0.3-1.0 μm, a D50 of 3-10 μm and a D90 of 60 μm or less in a state in which the carbon nanotubes are dispersed.

Provided is a production method for a dispersion liquid capable of ensuring the film thickness of a low refractive index layer and achieving in-plane film thickness uniformity.　This production method is for a dispersion liquid in which particles are dispersed in a dispersion medium, the method being characterized in that: the particles are particles of a condensate of a material containing an alkoxy silane, that is, a condensate of a material containing a trifunctional organic silicon; a first pulverization step, a condensing step, and a second pulverization step are performed in the stated order; the first pulverization step is for pulverizing the particles in a liquid in which the particles are dispersed in the dispersion medium; the condensing step is for condensing the liquid; the second pulverization step is for further pulverizing the particles, in the liquid, pulverized in the first pulverization step; the viscosity of the liquid after the second pulverization step is greater than the viscosity of the liquid after the first pulverization step, or the concentration of the particles in the liquid after the second pulverization step is greater than the concentration of the particles in the liquid after the first pulverization step; and the density of the particles in the produced dispersion liquid is 3.5 wt% or more.

A ZrO2 dispersion liquid containing, a ZrO2 particle coated with a silane coupling agent, and a dispersion medium for the ZrO2 particle, wherein a BET specific surface area of the ZrO2 particle coated with the silane coupling agent obtained by removing the dispersion medium is 36% or more of a BET specific surface area of the ZrO2 particle before coating with the silane coupling agent.

To provide a method for producing an oxide sintered body, in which a content of impurities is significantly reduced.SOLUTION: A method of the present invention for producing an oxide sintered body uses, as a raw material, an oxide containing two or more elements selected from In element, Ga element, and Zn element and satisfies the following conditions (a) to (c). An oxide having a purity of 6 N or more is used as the raw material. A grinding and mixing medium is formed of an oxide containing no element other than the elements selected as the raw material. Ultrapure water is used as a dispersion medium to form a slurry.SELECTED DRAWING: None

To provide a dispersant for a power storage device electrode capable of scattering a carbon material system conductive material at a high level, and provide a manufacturing method.SOLUTION: The present invention provides a dispersant for a power storage device electrode, for scattering a carbon material system conductive material into a scattering medium in an aspect, in which a hydrocarbon group that the number of carbons is 1 or more and 10 or less is contained, and which is at least one type modified polymer of carboxymethyl cellulose and a salt of them. A replacement degree of a carboxymethyl group and their salt in the modified polymer is preferably 0.3 mol or more and 1.0 mol or less to one mol of absolute glucose unit of a cellulose.SELECTED DRAWING: None

This invention belongs to the technical field of carbon dioxide capture methods, specifically relating to a carbon dioxide capture material and method based on porous liquid physical absorption. The carbon dioxide capture material consists of a hydrophobic solid porous material and an aqueous dispersion medium containing polyvinylpyrrolidone (PVP). The aqueous dispersion medium accounts for 90-95 wt% of the total system mass, and the solid porous material accounts for 5-10 wt%. The preparation method includes the following steps: Step 1, placing the weighed PPVP-containing aqueous dispersion medium in an open container, forming a gentle vortex through stirring, and then slowly adding the solid porous material; Step 2, dispersing in an ultrasonic water bath; Step 3, oscillating in a constant-temperature shaker; Step 4, repeating the above ultrasonic and oscillation steps. Compared with a pure water system, the third type of porous liquid system based on hydrophobic porous particles obtained by this invention can achieve better continuous carbon dioxide capture through the synergistic effect of the solid porous material and the solid-liquid interface interaction region.

The present invention provides a method for preparing spherical micron metal particles, which belongs to the field of metal 3D printing. The present invention mixes the oxide mixture of alloy elements in the micron metal particles to be prepared with carbon powder and a dispersion medium, and then sequentially performs carbon thermal reduction, decarburization under the action of ZnO, and then performs spheroidization treatment to prepare micron metal particles that meet the requirements of 3D printing. The results of the examples show that the preparation method provided by the present invention can obtain micron metal particles with a composition that meets the requirements, a small size, and good fluidity, wherein the particle size (D 90 ) is 51-76 μm, and the fluidity is 18-21 s / 50 g, which can meet the stringent requirements of 3D printing for the characteristics of micron metal particles.

The invention relates to the technical field of liquid silica gel forming, and discloses a liquid color silica gel forming process and clothing application, and the liquid color silica gel forming process comprises the following steps: step 1, base material pretreatment: selecting a flexible base material, cutting according to the size of a formed part, removing corner burrs, and sequentially carrying out ultrasonic cleaning, hot air drying and plasma activation; 2, according to the forming color requirement corresponding to the qualified flexible substrate obtained in the step 1, color paste preparation and dispersion are carried out, a bi-component addition type liquid silica gel matrix and special color paste are taken according to the mass ratio of 100: 8, 0.8% of surface modified nano-silica dispersion media are added, a dynamic shearing-ultrasonic two-stage dispersion technology is adopted for treatment, and the flexible substrate is obtained. According to the liquid color silica gel forming process, a two-stage dispersion process is adopted, a special dispersion medium is matched, uniform dispersion of color paste is achieved, and the liquid color silica gel forming process has the core advantages of being stable in color, washable and free of fading, good in silica gel fluidity after dispersion and suitable for scenes with high color requirements such as garment decoration.

To provide a method for producing luminescent nanoparticle dispersion with high dispersibility, by suppressing re-agglomeration of nanoparticles, by using a dispersion medium where the square of the difference between the dispersion energy of the medium (δdSol) and the dispersion energy of the luminescent nanoparticles (δdLN), (δdSol-δdLN)2, is small, in the producing step of the luminescent nanoparticle dispersion.SOLUTION: A method for producing a luminescent nanoparticle dispersion, which includes a process 1 of performing liquid-phase synthesis of a coarse nanoparticle solution by mixing a luminescent nanoparticle precursor, an organic base compound, and an organic acid compound in an organic solvent, and then removing the organic solvent from the coarse nanoparticle solution through sedimentation separation to obtain the coarse nanoparticles, and a process 2 of re-dispersing the coarse nanoparticles by adding a dispersing medium where the squared difference (δdSol-δdLN)2 between the dispersing force energy of the dispersing medium (δdSol) and that of the luminescent nanoparticles (δdLN) is 3.0 MPa or lower, and then removing the coarse particles through classification.SELECTED DRAWING: None

To provide a water-based inkjet ink composition which has excellent storage stability and discharge stability, can suitably recover from clogging in an inkjet nozzle even when the clogging occurs and can effectively suppress curling of a recording medium when recording is performed by applying to the recording medium and further to provide a recording method capable of effectively suppressing curling of a recording medium to which the water-based inkjet ink composition is applied.SOLUTION: There is provided a water-based inkjet ink composition which comprises a coloring material, inorganic oxide particles, a dispersant and a dispersing medium containing water. The inorganic oxide particles are dispersed in the dispersing medium by the dispersant. The dispersant preferably is a polymer dispersant. The content of the dispersant preferably is 20 pts.mass or more and 100 pts.mass or less based on 100 pts.mass of the inorganic oxide particles.SELECTED DRAWING: None

A dispersion of particles of a fluoropolymer in a dispersion medium, wherein the particles have a size of 5 µm or less and the dispersion medium contains a Solvent B and optionally a Solvent C, wherein Solvent B does not dissolve the fluoropolymer at room temperature, wherein Solvent B is a Solvent A, which is an aromatic compound, and / or a Solvent B1, which is Solvent B differing from the aromatic compound being Solvent A, and Solvent C dissolves the fluoropolymer at room temperature; a method of preparing the dispersion; a method of depositing a fluoropolymer on a substrate; and a product comprising a substrate and a fluoropolymer deposited on the substrate.

The application discloses a graphene oily slurry, a preparation method and application thereof. The preparation method comprises the following steps: mixing expanded graphite and a switching microemulsion, performing dispersion and first grinding treatment, adding a first switching substance, and switching the switching microemulsion to a water phase system through a switching reaction to generate precipitated particles, continuing to perform grinding and homogenization treatment, performing solid-liquid separation, removing the precipitated particles in the solid phase system, and obtaining a graphene aqueous concentrated slurry; finally, mixing and stirring the graphene aqueous concentrated slurry with an oily dispersant and base oil, simultaneously performing vacuum water removal and second grinding treatment, and obtaining the graphene oily slurry. The preparation method uses the switching microemulsion as a dispersion medium, does not need an additional dispersant, can realize mechanical peeling preparation and good dispersion of the graphene, the switching operation of the switching microemulsion can realize rapid separation of the graphene and the liquid phase, and the product graphene oily slurry has good anti-wear and friction-reducing effects and dispersion stability when applied to lubricating oil.

The present invention relates to a powder for the preparation of three-dimensional objects comprising, or consisting of, supraparticles (8,9,10) comprising at least a first population of first primary particles, wherein the first primary particles are thermoplastic polymeric particles, wherein the first primary particles have a volume-averaged median particle diameter of from 10 to 2000 nm; wherein the primary particles are agglomerated and / or partially sintered together to form the supraparticles, and / or wherein the supraparticles have a volume-averaged median particle diameter of from 2.5 to 100 pm. The invention also relates to a method for preparing in a powder for the preparation of three-dimensional objects comprising a1) providing an at least first population of first primary particles in a first dispersion medium, thereby forming a first dispersion (1); and / or a2) providing an at least second population of second primary particles in a second dispersion medium, thereby forming a second dispersion (2); and / or a3) mixing the first dispersion and the second dispersion, thereby forming a mixture (3) of the first and second dispersion; and b) atomizing (5) the first, second or mixture of the first and second dispersion thereby forming droplets of the first, second or mixture of the first and second dispersion; and c) removing all dispersion media, preferably evaporating all dispersion media by spray drying (7), thereby obtaining supraparticles (8,9,10).

A conductive-material-dispersed solution, according to one implementation, comprises a conductive material, a dispersant and a dispersion medium, wherein the conductive material comprises single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs), and the solid content of the conductive-material-dispersed solution is 1.5 wt % or greater. According to the one implementation, the provided conductive-material-dispersed solution has the conductive material pre-dispersed therein to an excellent level such that, when added to an anode slurry composition, dispersibility and the like of the conductive material are effectively improved, and inhibits aggregation between constituent elements in the anode slurry such that high solid content characteristics and the like in a slurry can be ensured.

This method for producing glass containing a plurality of components includes: a compounding step in which a glass raw material and a liquid dispersion medium are compounded such that the concentration is 80 mass% or less; a mixing step in which the raw material and the dispersion medium compounded in the compounding step are mixed through a mixing member to obtain a raw material mixture; a raw material lump preparing step in which a plurality of raw material lumps are obtained from the raw material mixture; a heating step in which the raw material lump is heated to be brought into a molten state; a cooling step in which the raw material lump in a molten state, supported in a non-contact manner, is cooled.

A method for producing a silicon nitride substrate that has high heat dissipation and excellent mechanical properties by preventing a rapid nitridation reaction of silicon and achieving a uniform nitridation reaction includes the following steps: a first step of mixing metal silicon powder and silicon nitride powder and pulverizing the mixture to form a composite powder; a second step of mixing the composite powder with a sintering aid and a dispersing medium to form a sheet-forming slurry in which the sintering aid is dispersed in the composite powder; a third step of molding the sheet-forming slurry to form a sheet; a fourth step of heating the sheet at 250 to 600°C to degrease the resin component to form a degreased sheet; a fifth step of heating the degreased sheet at 1200 to 1500°C to nitride the silicon contained in the sheet to form a nitrided sheet; and a sixth step of sintering the nitrided sheet to form a silicon nitride substrate, wherein the composite powder is formed by adsorption of metal silicon particles and silicon nitride particles.