180 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 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.

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

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.

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.

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.

The present invention addresses the problem of providing a method for continuously producing eutectic alloy fine particles, the method enabling the production of eutectic alloy particles, the particle diameters of which are easily controlled. The present invention provides a method for producing eutectic alloy fine particles that have a particle diameter of 0.1 μm to 50 μm, wherein: a fluid to be processed containing at least a melt of a eutectic alloy, the melt that serves as a dispersoid, and a solvent that serves as a dispersion medium is used; the fluid to be processed is continuously introduced an atomizer which atomizes the fluid to be processed between at least two processing surfaces that are arranged to face each other; the fluid to be processed goes through a dispersion state in which the melt of a eutectic alloy and the solvent are both in a liquid state within the atomizer; and solid eutectic alloy fine particles are obtained by cooling the fluid discharged from the atomizer. With respect to this method for producing eutectic alloy fine particles, the melt of a eutectic alloy is dispersed in the solvent in the form of droplets between the at least two processing surfaces; and the particle diameters of the melt of a eutectic alloy in the form of droplets are controlled by changing the viscosity of the solvent to be introduced between the at least two processing surfaces.

The invention relates to the technical field of liquid drop dispersion, in particular to a continuous liquid drop dispersion device, which comprises a dispersion main body and a cofferdam, the dispersing main body is provided with a conical slope surface; a conical top liquid outlet is formed in the top of the dispersing main body; the lower part of the dispersion main body is divided into a plurality of diversion trenches; a downcomer is formed in the lower end of the bottom of the diversion trench; the cofferdams are distributed along the edge of the dispersion main body; the plurality of shunting and collecting tanks are arranged in one-to-one correspondence with the diversion trenches; a filter screen is arranged in the shunting and collecting tank; an overflow outlet is formed in the side part of the split-flow collecting tank, one end of the split-flow coil is connected with the downcomer, and the other end extends to the bottom of the split-flow collecting tank; the height of the shunting coil pipe is gradually reduced along the flowing direction; the dispersion medium storage tank is communicated with the overflow outlet; the input end of the constant flow pump is communicated with the dispersion medium storage tank, and the output end is communicated with the cone top liquid outlet. According to the invention, a continuous and stable dispersion environment can be provided for liquid drop curing molding, and the problems of coalescence and adhesion caused by liquid drop accumulation are reduced.

A method for manufacturing a solid electrolytic capacitor that can ensure sufficient long-term reliability and also can provide a sufficiently high initial capacitance. [Solution] A method for manufacturing a solid electrolytic capacitor (20) includes a first step of preparing a porous body (4) containing a valve action metal and having a dielectric layer (5) formed to cover at least a portion of the surface; a second step of irradiating plasma onto at least a portion of the surface of the porous body to introduce hydroxyl groups; and a third step of forming a first conductive polymer layer by applying a first dispersion liquid containing a first dispersion medium and particles of a second conductive polymer dispersed in the first dispersion medium to the surface of the porous body into which hydroxyl groups have been introduced.

The invention discloses a particle shape and particle size detection method in the melting suspension granulation process of an energetic material, which comprises the following steps: collecting a liquid drop image in the process of heating and dispersing the energetic material into a dispersion medium; determining droplet size distribution data according to the droplet image; determining whether the droplet size distribution meets a cooling crystallization condition, if so, performing crystallization treatment, and if not, adjusting the stirring rate until the droplet size distribution meets the cooling crystallization condition; crystallization of the energetic material is completed, and an energetic material crystal particle image is collected in the crystallization process; according to the energetic material crystal particle image, determining whether the crystal particle diameter distribution meets the crystallization and granulation ending condition or not, if yes, ending granulation detection, and if not, reheating to the melting temperature of the energetic material, then returning to perform liquid drop image acquisition, and if yes, ending detection until the crystallization and granulation ending condition is sufficient. According to the method, real-time dynamic monitoring of the melt crystallization spheroidization process of the energetic material is achieved, and the hysteresis problem of traditional off-line detection is solved.

The present disclosure provides a composite material and a preparation method thereof, and a photoconversion device, wherein the composite material comprises an oleophilic continuous phase, a first discontinuous phase and a second discontinuous phase dispersed in the continuous phase, and an emulsifier located at the interface between the first discontinuous phase and the continuous phase, wherein the emulsifier is an oil-in-water type surfactant, the first discontinuous phase comprises a plurality of microstructures, the second discontinuous phase comprises an oil-soluble wavelength conversion material, and the microstructure comprises a water-soluble protective agent and a dispersion medium for dispersing the protective agent. Since unfavorable substances such as water and oxygen will be preferentially captured by the microstructure after continuing to enter the composite material containing the wavelength conversion material, the wavelength conversion material is protected from being corroded by these unfavorable substances and becoming ineffective, thereby improving the stability and life of the composite material.

To easily obtain the dispersibility of a dispersion liquid without performing an experiment requiring much labor.SOLUTION: The dispersibility prediction device 10 includes a flocculation diameter acquisition part 13 for acquiring a measured flocculation diameter as an experimental flocculation diameter in a particle dispersion liquid in which a prediction target particle that is a particle to be predicted of dispersibility in a particle dispersion liquid in which particles are mixed with a dispersion medium is mixed with a designated dispersion medium that is a designated dispersion medium, a first micro physical property calculation part 14 for calculating a micro physical property that is a predetermined physical property of the prediction target particle based on target particle information representing a predetermined physical property of the prediction target particle and designated dispersion medium information representing a predetermined physical property of the designated dispersion medium, and a dispersibility prediction model construction part 15 for constructing a dispersibility prediction model by setting the micro physical property as an explanatory variable and the flocculation diameter in the particle dispersion liquid as an objective variable.SELECTED DRAWING: Figure 1

A liquid composition includes an active material and a dispersion medium. ηA is a viscosity of the liquid composition at a shear rate of 10−1 s−1 and the ηA is equal to or greater than 1000 mPa·s. ηB is a viscosity of the liquid composition at a shear rate of 105 s−1and the ηB is equal to or smaller than 100 mPa·s.

[Problem] To provide a method for producing a multilayer object using an inkjet process, in which intra-dot nanopatterns that are expressed in nanodots can be stably adjusted into desired shapes in accordance with the application. [Solution] The method for producing a multilayer object at least includes: a printing step in which nanofluid droplets are ejected by an inkjet process onto a substrate on which a coating film may have been formed; and a drying step in which the ejected nanofluid droplets are dried to form a plurality of nanodots. The nanofluid droplets each comprise a dispersion medium and nanoparticles dispersed therein. In the printing step and the drying step, intra-dot nanopatterns expressed in the plurality of nanodots are adjusted by adjusting the Marangoni number Ma, the ratio kev of contact angle relaxation time to evaporation time, and the Péclet number Pe.

To provide metal oxide fine particles capable of forming a metal oxide film having excellent heat shielding properties and visible light transmittance, and a metal oxide fine particle dispersion.SOLUTION: In a transmission spectrum measured when a dispersion liquid dispersed at a concentration of 0.7 mass% in a dispersion medium is placed in a 1 mm cell, a slope k1 obtained by linear approximation using the least squares method in a wavelength range from 290 nm to 330 nm is within a range of 0.90 or more and 1.60 or less. In a transmission spectrum measured when a dispersion liquid dispersed at a concentration of 0.7 mass% in a dispersion medium is placed in a 1 mm cell, a slope k2 obtained by linear approximation using the least squares method in a wavelength range from 310 nm to 330 nm is within a range of 0.95 or more and 2.30 or less.SELECTED DRAWING: None