37 results about "Thixotropy" patented technology

This invention provides a silicon quantum dot modified composition, modified silicon quantum dots, a thickener, a thickener system, drilling fluid, and completion fluid. The silicon quantum dot modified composition comprises an organic solvent and two modifying agents. When the silicon quantum dots obtained by further modification of this silicon quantum dot modified composition are used as thickeners in high-salinity drilling and completion fluids, the thickener exhibits excellent high-temperature resistance and continues to provide good rheological and thixotropic properties even after aging.

The application relates to the technical field of electronic packaging and discloses a glue sealing method for embedding FPC into a wearable device mold. The method comprises the following steps: cleaning and activating the surface of the FPC; coating a reactive thixotropic interface anchoring agent at a preset position, the anchoring agent is made of thermoplastic polyurethane, hydrophobic modified fumed silica and latent curing micro powder containing isophorone diisocyanate dimer and a temperature-sensitive catalyst, and a solid-state pre-gel layer with thixotropy is formed after drying; the FPC is loaded into the mold, and the pre-gel layer is used to realize suspension fixing by utilizing the friction force between the pre-gel layer and the mold wall; low-pressure injection molding is carried out, and the heat of the melt is used to initiate ring-opening crosslinking of the micro powder. The physical limiting effect of the pre-gel layer solves the problem of FPC injection positioning deviation, and the in-situ chemical reaction is excited by using the heat of pressure maintaining, urea-formaldehyde ester bonding and semi-interpenetrating networks are generated at the interface, and the bonding strength and the moisture and heat resistance reliability of the packaging interface are improved.

The application discloses a positive electrode edge coating glue, a preparation method, a positive electrode sheet and a bonding method, aims to provide a positive electrode edge coating glue with high bonding property, high thixotropy, no material overflow during coating, good electrolyte resistance, and the technical scheme is prepared by copolymerization of hard monomers, soft monomers, first functional monomers, second functional monomers, crosslinking monomers, tackifying resins, initiators and solvents; the sum of the components is 100%; the application further discloses a positive electrode sheet applying the positive electrode edge coating glue, and a bonding method of the positive electrode sheet coated with the positive electrode edge coating glue and a PP diaphragm after the positive electrode edge coating glue is coated, the quality of the positive electrode sheet after the coating is excellent, the positive electrode sheet or the coating does not appear the phenomena of falling off and brittle fracture after being folded on the positive and negative sides; and the positive electrode sheet and the PP diaphragm are firmly bonded, and do not appear the phenomena of cracking or falling off after being soaked in electrolyte for a long time; and belong to the technical field of polymers.

This application relates to the field of liquid cooling technology, and discloses a highly stable, anti-sagging liquid-cooled composite nanofluid and its preparation method. The composite nanofluid comprises: deionized water and 1,2-propanediol as the continuous phase, graphene and single-walled carbon nanotube composite particles as the dispersed phase, and introduces a ternary rheological control system composed of a rheology modifier, polyvinylpyrrolidone, and a polymeric dispersant in a specific ratio, endowing the fluid with thixotropic and anti-sagging properties. This application improves the overall service stability and thermal management reliability of the liquid-cooled composite nanofluid under alternating high-speed pumping and static shutdown conditions.

The proposed development is a rheometer device that simultaneously measures viscosity (μ) and yield strength (to) online, with measurements taken at intervals of a few minutes for mining slurries. Therefore, the design must withstand the typical conditions of a mining operation (extreme temperatures, high altitude, communication problems, distance, extreme humidity, theft, mishandling, etc.). The rheometer in this development is based on the laminar flow transport of the slurry through capillaries. This rheometer measures simultaneously in more than one capillary. The online measurement and data analysis system accounts for the effects of sedimentation, capillary or pipe wall effects, temporal effects (e.g., thixotropy and viscoelasticity), and capillary inlet effects.On the other hand, it considers losses due to changes in diameter, the oscillatory effects of the point generated by the peristaltic pump, and the overreactions generated when the speed changes. A method for operating the rheometer device is also presented.

The application discloses a novel conductive chest strap preparation method, a permeable conductive reinforcing composition and a surface micro-erosion pretreatment gel. The method first weaves a segmented belt containing stretchable areas and non-stretchable electrode collection areas; then a thixotropic pretreatment gel is coated on the surface of the electrode area, a micro-erosion layer is formed on the surface of the fiber by using a solvent; then the permeable conductive reinforcing composition is forcedly absorbed into the fiber bundle under the condition of vacuum negative pressure; finally, the resin and the fiber form an interpenetrating network and chemical bonding through gradient temperature curing. Through the synergistic effect of physical structure restriction and micro-chemical anchoring, the application solves the problems of easy delamination and cracking of the conductive layer and unstable contact impedance in the traditional process, meanwhile, the gel characteristics are used to block the solvent wicking and diffusion, the elasticity of the substrate is effectively protected, and the durability and signal collection accuracy of the product are significantly improved.

The present invention aims to provide a dispersion liquid comprising fine fibrous cellulose dispersed in an organic solvent, which has high thixotropy. [Solution] The present invention relates to a dispersion containing fibrous cellulose with a fiber width of 1000 nm or less and an organic solvent, wherein the fibrous cellulose has anionic groups, the content of anionic groups is 0.50 mmol / g or more, the fibrous cellulose has an organo-onium ion as a counterion to the anionic groups, and the B-type viscosity measured by measurement method (A) is 50 Pa·s or more.

This invention discloses a high-elasticity three-dimensional adhesive composition for multiple overprinting and its preparation method, belonging to the field of three-dimensional coating materials technology. The composition comprises a polyurethane-polyurea interpenetrating network polymer emulsion, an organosilicon-modified waterborne polyurethane-acrylate hybrid emulsion, a crosslinking agent, functional composite fillers, a thickener, a dispersant, an antifoaming agent, additives, a pH adjuster, and deionized water. This invention constructs a dual crosslinking system of polyurethane-polyurea interpenetrating network and organosilicon hybrid emulsion, and combines it with rutile titanium dioxide, surface-modified nano-calcium carbonate, and nano-silica functional fillers. Combined with a nonionic polyurethane associative thickener to regulate rheological properties, the adhesive possesses high elastic recovery, anti-blocking properties, and strong thixotropic properties. During multiple overprinting, the adhesive can quickly set, without flowing or collapsing, with strong interlayer bonding, clear three-dimensional edges, and a smooth coating surface with excellent water and solvent resistance.

The application discloses a kind of UHPC with pottery clay-like plasticity and preparation method thereof, the formulation includes the following weight percentage components: gel material 140 parts-160 parts;Aggregate 140 parts-160 parts;Modified bentonite 20 parts-35 parts;Reinforcing fiber 3 parts-6 parts;Admixture 1 part-2.5 parts;The modified bentonite is sodium polyacrylate modified calcium-based bentonite.The application builds three-dimensional network structure by modified bentonite and gel material, significantly improves paste yield stress and thixotropy, keeps shape when standing, flows rapidly when shearing, can be bent, modified, shaped into standard workpieces using preset models;PVA / PP fiber and modified bentonite together enhance the density of interface transition zone, reduce the probability of microcrack initiation;Admixture system and modified bentonite produce ion-polymer-clay multiple adsorption, further delay hydration exothermic peak, widen shaping time window to more than 90 minutes, meet the needs of complex curved surface hand sculpture and thin-walled component integrated forming.

The present application belongs to the technical field of fermentation products and its preparation, and particularly relates to a bubble fermented milk with thixotropy and a preparation method thereof. The bubble fermented milk is prepared by fermenting raw milk and a gas production regulator by kefir bacteria, wherein the protein content of the raw milk is 2.3% to 3.8%, and the gas production regulator is used to adjust the carbon dioxide production in the fermentation process of the kefir bacteria, so that the fermented milk contains micro-bubbles, and the amount of the micro-bubbles makes the pressure of the bubble fermented milk in a closed container greater than or equal to 0.028 MPa. The bubble fermented milk changes from a solid state to a liquid state after shaking. The present application constructs a bubble-protein network composite structure and accurately controls the gas production, so that the product presents a smooth and particle-free liquid taste after shaking, and the synergy of the bubble feeling and the thixotropy is balanced.

The present application relates to the technical field of anti-sedimentation agent, and discloses a polyamide anti-sedimentation agent for water-based system, a preparation method and application thereof. The polyamide anti-sedimentation agent is obtained by subjecting 2,6-diamino (N,N-dimethyl ethylamine) hexanoic acid amide and diacid monomers to melt polycondensation reaction, and then subjecting the resultant to quaternary ammonium reaction with hydrochloric acid and alkyl glycidyl ether. The side chain of the anti-sedimentation agent is introduced with hydrophilic amide bond, hydroxyl group and quaternary ammonium salt, so that the anti-sedimentation agent has excellent water solubility and is more suitable for water-based emulsion system. The polyamide anti-sedimentation agent contains alkyl long chain, can form hydrophobic association, plays a thickening role, improves the viscosity and thixotropy of the emulsion, firmly fixes the aluminum powder in the network structure formed by the polyamide anti-sedimentation agent, effectively inhibits the aggregation and sedimentation of aluminum powder particles, and exhibits excellent anti-sedimentation effect.

The application provides a nano-silica sol two-component concrete repair material and a preparation method and application thereof, the repair material comprises a liquid material component A and a powder material component B, and the mass ratio of the two is 1: (2.5-3.5), the two components are stored separately, and are mixed in real time when used. Through nano-silica sol thickening, thixotropy control and powder material grading optimization, the slurry after mixing has excellent thixotropy and stable extrudability, and the initial flowability is adjustable in the range of 160-180 mm. Through real-time scanning of working condition details by an intelligent sensing and control system, and intelligent matching of material ratio and process parameters, the repair material can better adapt to different defect morphologies, structural curvatures and bearing requirements, significantly improves the accuracy, adaptability and overall performance reliability of repair, and provides a complete and self-adaptive material and process solution for automatic and intelligent efficient repair of tunnels, culverts and other narrow and high-risk spaces.

A liquid ejection head according to one embodiment of the present disclosure comprises: an ejection unit including a plurality of nozzles for ejecting a liquid, a plurality of pressure chambers individually communicating with the plurality of nozzles and each filled with the liquid, a liquid supply flow path for supplying the liquid into the pressure chambers, and a liquid recovery flow path for recovering the liquid from within the pressure chambers; and a drive unit that drives the ejection unit on the basis of a drive signal having one or a plurality of pulses within a predetermined printing cycle, to eject the liquid filled in the pressure chambers from the nozzles. When a predetermined liquid which is a thixotropic or pseudoplastic liquid is used, the drive unit performs micro-vibration drive on the predetermined liquid such that a micro-vibration pulse is included in the drive signal, the micro-vibration pulse having a pulse width within such a range that the predetermined liquid is not discharged from the nozzle and which causes micro-vibration of the predetermined liquid.

This application discloses a ceramic trademark glaze and its preparation method. The trademark glaze comprises 50-60% low-temperature frit; 5-10% zinc oxide; 20-25% zirconium silicate; 8-12% calcined kaolin; 1-2% sodium carboxymethyl cellulose; 0.5-1.0% sodium tripolyphosphate; and 1-5% pigment. The trademark glaze exhibits excellent printing performance, good thixotropic properties, smooth screen printing, and clear line printing without breaks or ink bleeding; it can print clear lines as narrow as 0.3mm. The firing effect is ideal, with pure and vibrant colors and high contrast with the white base glaze; the glaze surface is smooth and even, with no edge curling. It has strong environmental resistance, high hardness after firing, and is resistant to acids and alkalis, maintaining clarity even in harsh outdoor environments for extended periods. The process is widely adaptable, suitable for application to green or unglazed ceramic bodies, and has good compatibility with conventional electrical porcelain firing processes.

The invention relates to a method for producing a component by casting a material (6) composed of a light metal alloy, for example a magnesium alloy, in particular a thixotropic material, into a component mold, wherein the material (6) is provided in a heated barrel (2), in particular in a thixotropic state, and wherein the material (6) is injected into the component mold by moving a plunger unit (3), for example a piston, forward in the barrel (2) in order to obtain at least one component after the material (6) injected into the component mold has cooled. According to the invention, a layer (8) of the material (6), in particular a solid layer, is formed on the plunger unit (3) as it moves, wherein the formed layer (8) is at least temporarily protected from oxidation, in particular during the backward movement of the plunger unit (3). The invention also relates to an apparatus (1) for carrying out such a method.

The application relates to the technical field of ceramic industry, and provides a debonding agent capable of improving the thixotropy of mud and a preparation method thereof. The debonding agent comprises the following raw materials in parts by weight: 5-12 parts of enzymatic hydrolysis lignin, 3-10 parts of amino acid, 3-10 parts of glyoxal, 6-15 parts of methylene phosphonate, 6-15 parts of polyoxyethylene ether, 5-10 parts of polyethylene glycol diacrylate, 5-10 parts of acrylic monomer, 1.5-5 parts of cyclotriphosphazene crosslinking agent, 1-5 parts of silicate and 0.5-3 parts of tannic acid; the amino acid modified lignin is obtained through crosslinking reaction of enzymatic hydrolysis lignin, amino acid and glyoxal; the enzymatic hydrolysis lignin, amino acid, glyoxal, polyethylene glycol diacrylate, acrylic monomer and cyclotriphosphazene crosslinking agent are polymerized to form a crosslinking network, and the tannic acid is doped in the crosslinking network structure. The debonding agent provided by the application is compounded by using a polymer crosslinking structure and various functional raw materials, has good fluidity and thixotropy, and has very excellent debonding effect.

This invention discloses an aqueous ceramic glaze ink, its preparation method, and its application, relating to the field of ceramic printing technology. The invention uses lithium magnesium silicate as an inorganic rheology modifier; its three-dimensional network structure effectively blocks and supports solid particles and regulates the ink's shear-thinning properties. Compared to natural layered silicates, lithium magnesium silicate has higher purity, more stable performance, stronger resistance to high-valence ions, and controllable thixotropy. Sodium tripolyphosphate is added to the base glaze to chelate calcium ions, reducing damage to the lithium magnesium silicate structure. Sodium hexametaphosphate is added to enhance dispersion and chelation, water glass provides an alkaline environment to stabilize the structure, and sodium carboxymethyl cellulose is used for thickening and stabilization. By first preparing a lithium magnesium silicate solution and then compounding it with the base glaze, electrolyte shock is reduced, and system stability is improved.

In some embodiments, apparatuses and methods are provided herein useful for dispensing a fluid, such as a thixotropic fluid. In some embodiments, a bottle having a closure cap includes a flip top, a base, and a detachable disk or movable insert, where the base and disk define a mixing chamber configured to facilitate mixing of any serum or liquid separated from the fluid back therein.

This invention discloses a method and apparatus for dry in-situ magnetically controlled repair of cavitation erosion on turbine blades. The method includes: after the turbine is shut down and the accumulated water is drained to create a dry environment, a repair actuator is inserted into the flow channel through a manhole in the volute and moved to the cavitation erosion area on the blade surface; geometric feature data of the cavitation erosion area is collected, and a thixotropic composite repair material containing magnetic particles is prepared; the composite repair material is injected into the cavitation erosion area according to the geometric feature data, and a controllable magnetic field is applied, using the magnetic force to drive the magnetic particles to migrate, thereby making the material dense and compacted and conforming to the blade profile; the compacted composite repair material is cured, and the repair actuator is withdrawn after reaching a preset strength. This invention enables unmanned in-situ repair of cavitation erosion areas on turbine blades, significantly shortening the maintenance cycle and reducing safety risks. The magnetic field compaction technology improves the density of the repair material and the bonding strength with the matrix, effectively ensuring the repair quality.

The application relates to the technical field of biomedical engineering, and discloses a method for constructing an ex vivo normal-temperature perfusion repair model based on a discarded liver. The method constructs a double-path closed-loop perfusion system, applies a shear stress flow field with low-frequency fluctuation characteristics to a portal vein loop to maintain endothelial function, loads a composite flow field obtained by superimposing low-frequency pulsation and high-frequency micro-shaking on a hepatic artery loop, and significantly reduces microcirculation flow resistance by using the thixotropy and shear thinning characteristics of oxygen-containing perfusion liquid. The system further realizes physical layering of red blood cells and lipids by using acoustic radiation force of a standing wave acoustic flow control layered cavity, and automatically guides a high-viscosity fat-rich flow layer into an adsorption module for specific purification by cooperating with a thixotropic passive shunt valve based on fluid viscosity feedback. Temperature-gas coupling adjustment based on a metabolic temperature coefficient is performed in a rewarming stage. The application solves the problems of microcirculation non-recurrent flow and hyperlipidemia clearance by coupling of multi-dimensional physical fields, and realizes effective repair of the discarded liver.

Cement compositions and methods of using the composition wherein the cement compositions comprise water, a hydraulic cement, diutan gum, amorphous silica, sepiolite, and a plurality of needle-shaped fibers, and the method includes providing the cement composition, introducing the cement composition downhole into a well; and allowing the cement composition to set therein.

The application discloses a weather-resistant railway turnout coating and a preparation method thereof, and relates to the technical field of railway turnout coatings. Fluorosilane modified graphene oxide nanosheets rich in fluorinated alkyl groups and active silicon hydroxyl groups are obtained; a weather-resistant polyurethane prepolymer with a main chain block containing fluorine and isocyanate end groups is synthesized; a nanocomposite prepolymer homogeneous phase is obtained; a high-activity weather-resistant coating stock solution with a self-leveling property is prepared; a interpenetrating network structure of fluorosilicon modified nanophase and high molecular organic phase is formed in the coating system, and the weather-resistant railway turnout coating is formed in situ on the surface of a metal base. The application significantly improves the rheological stability and extremely high thixotropy of the nanocomposite system.

This invention relates to the field of ink resistivity measurement technology, and discloses a method and control system for measuring the resistivity gradient of integrated black ink. The method includes: dispersing conductive carbon black and a fast-drying solvent in a high-speed disperser to obtain a percolated carbon black slurry; coating the percolated carbon black slurry onto a substrate, applying a pulsed magnetic field and calculating the resistivity gradient between the film surface and the substrate; when the resistivity gradient exceeds a preset threshold, calculating the dispersant injection flow rate and controlling a micro-pump to inject dispersant to achieve a shear rate within a set range, thus obtaining a coating slurry; calculating the thixotropic index of the coating slurry and calculating the set temperature values ​​for the first, second, and third temperature zones of the drying section; and obtaining a cured film through a curing process. This method achieves control from thixotropic protection and resistivity gradient reduction to rapid curing, realizing the rapid and uniform construction of the conductive network of integrated black ink and improving the uniformity of the film resistivity distribution.

An underwater anti-dispersion ultra-high performance concrete based on reversible network design, its preparation method, and its application. The ultra-high performance concrete comprises cementitious materials, water, polycarboxylate superplasticizer, and a synergistic anti-dispersion composite admixture; wherein the composite admixture consists of a main agent and auxiliary agents. The main agent and auxiliary agents are used to construct a three-dimensional reversible network structure with significant thixotropic properties in situ within the slurry, endowing the slurry with intelligent rheological properties of "shear thinning—static thickening": the yield stress reaches 50–320 Pa at rest to resist underwater erosion, and the plastic viscosity is maintained at 2–8 mPa·s during shearing to ensure pumpability. This invention effectively solves the problem of balancing rheological properties and anti-dispersion properties in ultra-high performance concrete systems, and is particularly suitable for the repair and reinforcement of underwater piers, pile foundations, and tunnel linings.

This application relates to the field of road engineering materials technology, and discloses a composite slurry seal with a biomimetic scale-structured waterproof layer and its preparation method. The seal includes a two-layer composite structure comprising a waterproof functional layer, an interlayer bonding layer, and an abrasion functional layer. The waterproof layer raw materials include surface-activated modified PET aggregate, thixotropic modified emulsified asphalt containing a rheology modifier, and active fillers. The preparation method covers PET surface modification, thixotropic system construction, interlayer bonding during a specific window period, and layered paving processes. This invention solves the problem of upward buoyancy and layering by introducing a rheology modifier to construct a thixotropic network, utilizing yield stress to balance buoyancy, restricting the vertical migration of lightweight PET aggregate, and promoting its orderly layered arrangement. Surface chemical modification transforms the physical interface into chemical bonding, significantly improving interfacial bonding strength. Combined with a flexible-at-the-bottom, rigid-at-the-top structural design, it significantly improves the seal's waterproof sealing, crack resistance, durability, and shear stability.

This invention discloses a method and system for characterizing the thixotropy of semi-solid foods. The method first selects the thixotropic process of semi-solid foods as the research object, obtains experimental data on the changes in viscosity or shear stress over time, then establishes a structural parameter evolution model for the semi-solid foods, derives analytical solutions, and substitutes these solutions into a thixotropic constitutive model to obtain expressions for the viscosity or shear stress of the semi-solid foods. Combined with experimental data, the parameters of the thixotropic constitutive model are determined, the thixotropic curve of the semi-solid foods is quantified, and the changing law of the thixotropic process is simulated to guide practical applications. This invention's method for characterizing the thixotropy of semi-solid foods employs a time-dependent fractional derivative method, which provides clear analytical solutions, is computationally simple, and has high simulation accuracy. It has a wide range of applications and can provide an effective theoretical tool for characterizing the thixotropic process of semi-solid foods.

The application relates to the technical field of pipeline repair, and discloses a pipeline trenchless repair material and a preparation method thereof. The repair material is a two-component solvent-free thixotropic fluid, which is composed of component A and component B. The component A takes bisphenol A type and bisphenol F type liquid epoxy resin as a matrix, and is matched with hydrophilic fumed silica and quartz powder to build a thixotropic network. The component B contains a reaction product of tall oil fatty acid and triethylenetetramine, benzyl alcohol, an alicyclic amine curing agent, an aromatic amine curing agent and a tertiary amine accelerator. The amine curing system and the thixotropic adjustment are compounded, so that the problems of easy flow hanging in vertical surface construction and low bonding strength on a wet base surface of the existing material are effectively solved. The material has excellent thixotropy, wet surface bonding strength and chemical corrosion resistance, is dense after curing, has low shrinkage, and has no solvent residue, and is particularly suitable for trenchless in-situ repair construction of underground drainage pipelines.

This invention relates to the field of oil quality testing technology and discloses an online detection system for optical features of liquid oils based on computer vision. The system acquires polarization image data through multi-angle polarization imaging, calculates Stokes parameters to generate polarization feature images, applies anisotropic Gaussian filter banks combined with consistency judgment to detect fibrous foreign matter and generate a spatial distribution mask, applies shear perturbation pulses to trigger oil structure destruction, obtains time-series flow velocity field data of the recovery process through structured light phase demodulation, generates a spatially resolved viscosity recovery time map sequence, divides regions based on the fiber spatial distribution mask and extracts recovery parameters, and finally generates a quantitative evaluation result of fiber-rheological coupling, realizing a quantitative correlation between the spatial distribution of fibrous foreign matter and local thixotropic recovery.

A gravitational cascade flow battery achieves practical energy density of 200 Wh / L through micro-encapsulated phase change materials and eliminates mechanical components using acoustically-controlled thixotropic flow. The system comprises a vertical tower where gel-state electrolyte slurries flow through cascaded reaction stages only when acoustic chokes locally liquefy the fluid through ultrasonic stimulation. Smooth micro-encapsulated spheres contain crystallizing active materials, preventing membrane and electrode abrasion while maintaining high energy density. Thixotropic behavior created by fumed silica prevents settling at rest but enables rapid flow under acoustic activation. A passive fail-safe system releases hot solvent upon power loss, gravity-flushing the cascade to prevent catastrophic solidification. The acoustic control provides precise digital flow modulation with <100 ms response time while achieving 80-82% round-trip efficiency. Applications include grid-scale energy storage, renewable energy integration, and underground installations utilizing natural or artificial vertical structures.

The present application provides a gel composition with thixotropic property. Compared with the prior art, the present application combines gelatin with different gel strength and controls the total amount of addition, thereby obtaining a gel composition with thixotropic property, which, when applied in dairy product processing, can impart good texture, sensory performance and stability to the dairy product, and has a firm texture at low temperature and good flowability after being subjected to external force when close to human body temperature.