3139 results about "Solid content" patented technology

A method for monitoring solids content during drilling operations may include collecting real-time cuttings image data at a surface outlet of a natural resource well, determining cuttings characteristics data based on the real-time cuttings image data, collecting real-time surface mud data, and determining real-time, one-dimensional downhole cuttings information based on a multi-dimensional computational fluid dynamics model. The cuttings characteristics data may include cuttings size distribution, cuttings volume, cuttings velocity, cuttings orientation, cuttings area, or combinations thereof. The real-time surface mud data may include inlet mud parameters, drilling operational parameters, well planning parameters, or combinations thereof. Determining real-time, one-dimensional downhole cuttings information may include converting the multi-dimensional computational fluid dynamics model into a one-dimensional continuous cuttings transport model and computing an integrated one-dimensional continuous cuttings transport model. Inputs to the integrated one-dimensional continuous cuttings transport model may include the cuttings characteristics data and the real-time surface mud data.

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention relates to the technical field of equipment control, in particular to an adhesive tape forming equipment control method and system based on adhesive performance analysis, and the method comprises the steps: establishing a viscosity control model, a drying temperature and time adjustment algorithm and a tension adjustment algorithm; a data model and a control algorithm are incorporated into control logic of the PLC, and dynamic adjustment data of coating speed and pressure are output through a viscosity control model; outputting dynamic adjustment data of the drying temperature and time through a drying temperature and time adjustment algorithm; outputting dynamic adjustment data of the tension of the base material through a tension adjustment algorithm; adjusting each piece of dynamic adjustment data through different weights; and outputting a control value according to the adjustment result. By introducing the viscosity, solid content, rheological property and other characteristics of the adhesive into automatic control, the problem of production fluctuation caused by neglecting material characteristics in a traditional control method is solved, and the precision and consistency of the adhesive tape forming process are remarkably improved through sensor feedback, model control and PLC integration.

The invention discloses a PHA nano aqueous suspension as well as a preparation method and application thereof, and belongs to the field of high polymer materials and processing and application thereof. The suspension takes PHA resin as a dispersion phase and water as a continuous phase, the total solid content is 23-65wt%, the PHA resin accounts for 80-98.5 wt% of the total solid, and the assistant accounts for 1.5-20wt% of the total solid. The average particle size of PHA particles is 30-140 nm, D90 is smaller than or equal to 150 nm, the polydispersity index PDI is smaller than 0.3, and when the pH is 6.5-7.5, the absolute value of Zeta potential is larger than 30 mV. The preparation method comprises the following steps: pretreating the PHA raw material, preliminarily dispersing in a water phase under the action of the dispersion stabilizing aid, and carrying out high-energy homogenization treatment. The obtained suspension is stable in storage, has excellent barrier property and mechanical property after film formation, and is suitable for preparing biodegradable food packaging barrier coatings, water-based environment-friendly coatings and water-based adhesives.

The invention provides a diaphragm adhesive composition, a diaphragm and a lithium ion battery, the solid content of the diaphragm adhesive composition is 10-40wt%, and when the solid content of the diaphragm adhesive composition is diluted to 5wt%, the surface tension of a diluent is not less than 28mN / m; the diaphragm adhesive composition comprises polymer particles A and a polymer adhesive B, wherein the solid mass ratio of the polymer particles A to the polymer adhesive B is 100: (3-30); the particle size of the polymer particles A is 0.2-10 [mu] m, and the glass transition temperature of the polymer particles A is 30-90 DEG C; and the polymer adhesive B is a water-based emulsion type adhesive, the particle size of polymer particles contained in the polymer adhesive B is 0.1-1 mu m, and the glass transition temperature of the polymer adhesive B is-50-20 DEG C. The diaphragm adhesive composition disclosed by the invention is not easy to spread on a base material, can prevent an adhesive glue solution from being quickly diffused on the surface of a diaphragm, forms controllable, uniform-size and uniformly-distributed adhesive coating points on the surface of the base material, and has small influence on the air permeability of the diaphragm.

The invention provides a polymer, a preparation method thereof, a positive pole piece, a secondary battery and an electric device. The polymer comprises a structure as shown in a formula I, X comprises a phosphate group or a phosphite group, R1 and R3 respectively and independently comprise at least one of a polyether chain segment, a polyester chain segment, hydrogen and alkyl, and at least one of R1 and R3 comprises the polyether chain segment or the polyester chain segment; and R2 comprises an organic chain segment. According to the polymer provided by the invention, the flexibility of a pole piece can be improved while the maximum solid content of positive electrode slurry is effectively improved, the filtering time is shortened and the production efficiency and quality of the pole piece are improved.

The invention provides a bio-based carbon material modified ternary precursor and a preparation method and application thereof.The preparation method comprises the following steps that 1, a nickel-cobalt-manganese mixed salt solution, a complexing agent, a precipitator and a doped metal source solution are injected into a base solution in a parallel flow mode to be subjected to a co-precipitation reaction, and an inner core solution is obtained; (2) adjusting the solid content of the inner core solution and the concentration of a complexing agent, injecting a nickel-cobalt-manganese mixed salt solution, the complexing agent, a precipitator and a doped metal source solution in a parallel flow manner, and carrying out a second coprecipitation reaction to obtain a doped ternary precursor; and (3) carbonizing a bio-based carbon source, mixing the carbonized bio-based carbon source with the doped ternary precursor, and sintering to obtain the bio-based carbon material modified ternary precursor. Doping elements in the ternary precursor effectively permeate into a matrix for doping, and a coating layer prepared from the bio-based carbon material is high in stability and good in rate capability.

The invention belongs to the technical field of wood processing. The invention discloses a recombined material impregnation method and device. The method comprises the following steps: S1, preparing a glue solution; s2, adding the glue solution into a glue dipping tank; s3, immersing the recombination unit in the glue solution of the glue dipping tank for a preset time; and S4, the recombination unit is taken out of the glue solution, and glue dipping is completed. In the process, the temperature, the solid content and the liquid level of the glue solution are regulated and controlled, so that constant-temperature impregnation of the glue solution and constancy of the solid content and the liquid level are realized, and the consistency of the permeability, the molecular weight and the glue applying amount of the glue solution is ensured; and meanwhile, the glue solution is subjected to impurity removal treatment, so that the uniformity of glue dipping is realized. Compared with a traditional impregnation process, the impregnation quality is greatly improved through the implementation of the method.

The invention discloses a prismatic TRISO particle dispersion additive fuel element as well as a preparation method and application thereof, and relates to the technical field of nuclear fuel. The method comprises the following steps: preparing the SiC shell by adopting a binder injection molding process or a photocuring molding process; the SiC shell is subjected to degreasing treatment; carrying out chemical vapor infiltration pretreatment on the SiC shell subjected to degreasing treatment; the pretreated SiC shell is filled with simulated TRISO particles and SiC matrix powder, high-solid-content SiC slurry is adopted for packaging, then an enhanced chemical vapor infiltration method is adopted for densifying the dried additive SiC element, and the prismatic TRISO particle dispersion additive fuel element is obtained. The TRISO fuel particles with high inherent safety and the nuclear-grade SiC ceramic material with excellent high-temperature resistance and irradiation resistance are combined, the additive manufacturing process is matched, the design flexibility and expansibility are improved, and the TRISO fuel particles have large application potential in the high-temperature gas cooled reactor.

The invention discloses a preparation method of electrode slurry for an electrostatic chuck, and belongs to the technical field of electrostatic chucks, powder is dispersed in an organic solvent through a ball mill, the powder is aluminum oxide powder and two or more kinds of carbide powder with different particle sizes, the D50 particle size of the aluminum oxide powder is 3-6 [mu] m, and the D50 particle size of the carbide powder is 3-6 [mu] m; powder with different particle sizes can have higher stacking density, few organic solvents are needed in the dispersion process, shrinkage after sintering is small, and cracking and layering of electrode slurry are not prone to being caused; ball-milling and dispersing the powder, drying in a drying oven for 24 hours, grinding by using a mortar, and sieving for later use; and mixing the sieved powder with an organic carrier with the solid content of 60-80%, mixing for 30-60 minutes in a mixing and kneading machine, and then rolling in a three-roller machine to obtain the required electrode slurry. According to the invention, three kinds of particles with different particle sizes are mixed, so that the powder bulk density is greatly improved, the electrode thickness controllability is improved, and the shrinkage ratio after burning is reduced.

The invention provides a hyperbranched polysiloxane coating corrosion inhibitor and a preparation method thereof, a hyperbranched polysiloxane epoxy anticorrosive paint and a preparation method and application thereof. The hyperbranched polysiloxane coating corrosion inhibitor is prepared by catalytic reaction of p-dimethylaminobenzaldehyde and small molecular silane in an alcoholic solution. The coating comprises 30-50 parts of epoxy resin, 20-35 parts of a hyperbranched polysiloxane coating corrosion inhibitor, 5-10 parts of an active diluent, 2-2.5 parts of a silane coupling agent, 15-30 parts of filler, 1.5-2.5 parts of an auxiliary agent and 15-20 parts of a curing agent. Compared with the prior art, an imine group in hyperbranched polysiloxane and a metal substrate form a stable complex, the stable complex is adsorbed on the metal surface to form a protective film, the erosion rate of a corrosive medium to the metal substrate is effectively reduced, the corrosion resistance of a coating is improved, meanwhile, the coating prepared by adopting the reactive diluent is high in solid content and good in corrosion resistance, and the service life of the coating is prolonged. VOC emission in the paint film curing process is low.

The invention relates to a preparation method of a porous polyimide low-dielectric material. The method comprises the following specific steps: preparing a polyamide acid solution with a certain solid content under an ice-water bath condition; after the solution is recovered to normal temperature, adding a certain amount of sodium alginate, and after the solution is homogenized, adding a catalyst and a dehydrating agent for chemical imidization; the method comprises the following steps: coating a substrate medium with a solution after a certain time of reaction, standing in air for a certain time, sequentially and respectively placing the substrate medium in ethanol and a hot water bath for replacement for a certain time, airing at normal temperature, and transferring to a high-temperature oven for gradient cyclization to realize complete imidization. According to the method, conditions are mild and easy to control, and the low-dielectric film material which is flat in appearance and ordered in structure is prepared only through a normal-pressure drying method.

The invention relates to a bionic Al / SiC composite material with a three-dimensional network multilevel structure and a preparation method of the bionic Al / SiC composite material, and belongs to the technical field of new material preparation. According to the method, through the collaborative process of freeze casting and organic foam impregnation, the problem that in the prior art, the multilevel aperture and the complex network structure are difficult to cooperatively regulate and control is solved. The preparation method comprises the following specific steps: preparing tert-butyl alcohol-based ceramic slurry, impregnating the slurry with polyurethane foam, performing freeze casting molding, removing a solvent through freeze drying, performing high-temperature sintering to form SiC ceramic with a three-dimensional reticular hierarchical pore structure, and finally preparing the Al / SiC composite material through a vacuum pressure infiltration process. Wherein a sintering aid is added into the slurry, so that the sintering temperature is obviously reduced; the specification (40-60 ppi) of polyurethane foam, the solid phase content (20-30 vol.%) of slurry, the freezing speed (0-90 DEG C) and the content (5-20 wt.%) of a sintering aid are regulated and controlled. And the cross-scale collaborative design of micron-scale directional holes and millimeter-scale mesh holes is realized. The Al / SiC composite material prepared by the invention has the advantages that the compressive strength, fracture toughness and other properties are obviously higher than those of the traditional single-aperture porous ceramic, and the Al / SiC composite material is suitable for the fields of manufacturing and energy absorption of precise instruments, electronic packaging and optical devices.

The invention relates to the technical field of sewage treatment, in particular to an MABR hollow fiber composite membrane and a preparation method and application thereof.The preparation method comprises the following steps that raw materials, a reinforcing agent and a dispersing agent are put into a kneading machine to be kneaded for 1-2 hours, a modifying agent is put into the kneading machine, the mixture is heated to 80-120 DEG C and kneaded for 4 hours, and a modified material is obtained; the preparation method comprises the following steps: uniformly mixing a modified material, a catalyst, a cross-linking agent and a solution to prepare mixed slurry with the solid content of 5-40%, coating the slurry on the surface of a hollow fiber tube, and curing to obtain the MABR hollow fiber membrane, so that the mechanical strength of a basic raw material is improved through a reinforcing agent, the membrane is not easy to damage, and the service life of the membrane is prolonged. According to the present invention, the reinforcing agent and other auxiliary agents are uniformly dispersed in the basic raw material through the dispersant so as to reduce defects, the raw material end-capping group is modified through the modifier so as to provide the product with characteristics of aging resistance and good biocompatibility, and the reaction speed is changed during the molding process through the catalyst so as to form the stable membrane structure through the molding cross-linking of the cross-linking agent and the raw material;

The invention provides silicon carbide ceramic slurry for photocuring 3D printing, silicon carbide ceramic and a preparation method of the silicon carbide ceramic, and relates to the technical field of 3D printing ceramic. According to the preparation method of the silicon carbide ceramic slurry for photocuring 3D printing, the SiC powder is wrapped with Y2O3-Al2O3, and the relative dosage of the yttrium oxide precursor, the aluminum oxide precursor and the SiC powder is controlled, so that the solid content, the curing depth and the curing efficiency are improved. The invention further provides a preparation method of the silicon carbide ceramic, the silicon carbide ceramic slurry with high solid content, high curing depth and high curing efficiency is adopted in the method, the silicon carbide slurry can better guarantee the integrity of the silicon carbide ceramic in the printing process, and deformation and cracking phenomena caused by sintering are reduced. Meanwhile, Y2O3 and Al2O3 can also be used as sintering aids of SiC, so that the density of sintered silicon carbide is improved, and the mechanical property of the silicon carbide ceramic is further improved.

The invention relates to the technical field of nano materials, and particularly discloses a preparation method of surface modified nano calcium carbonate for a battery diaphragm coating. According to the method, the technical paths of microemulsion confinement crystal form regulation and control, gradient surface modification and boehmite compounding and porosity regulation and control are fused, and the functional nano calcium carbonate adaptive to the battery diaphragm coating is prepared. According to the technical scheme, limestone is used as a raw material, after calcination and digestion, the particle size of nano calcium carbonate is controlled through microemulsion carbonization (a cyclohexane-span 80-n-butyl alcohol system); a silane coupling agent KH560-KH570 is adopted for gradient modification to introduce an electrophilic functional group, boehmite is compounded to form a composite coating, and the porosity is regulated and controlled by adjusting the solid content in coating slurry and the coating speed. The method is stable in process and high in compatibility, and meets the requirements of diaphragm coatings of lithium ion batteries and solid-state batteries.

To provide an aqueous coating composition capable of giving a coating film which has an excellent appearance and suppresses yellowing while securing water resistance.SOLUTION: The aqueous coating composition contains a hydroxyl group-containing acrylic resin emulsion (A), a core-shell type acrylic resin dispersion (B), and a hydrophobic melamine resin (C). The core-shell type acrylic resin dispersion (B) has a C4-24 branched hydrocarbon group in a core part and has a hydrophilic resin in a shell part. The solid content mass ratio (A:B) of the hydroxyl group-containing acrylic resin emulsion (A) to the core-shell type acrylic resin dispersion (B) is 30:70-90:10.SELECTED DRAWING: None

The invention discloses a water-based zircon powder coating which comprises the following components in parts by weight: 100 parts of refractory aggregate, 4-10 parts of a binder, 2-5 parts of a dispersing agent, 2-8 parts of a suspending agent, 0.1-2 parts of a wetting agent, 1-4 parts of a defoaming agent, 1.5-3 parts of a coalescing agent and 10-30 parts of water, the refractory aggregate is zircon powder and comprises coarse powder and fine powder; the suspending agent comprises cellulose modified magnesium silicate and a component 2, and the component 2 comprises at least one of sodium bentonite, lithium bentonite and attapulgite. According to the water-based zircon powder coating disclosed by the invention, the density, the solid content and the like of the coating are maintained at a relatively high level while the water-based zircon powder coating has low viscosity, so that the coating establishment efficiency is effectively improved, and the one-time spraying thickness can reach 1.0-1.2 mm; the coating drying time is greatly shortened, and the working efficiency is improved; the coating is excellent in sand burning resistance and good in stripping performance, is used for casting production, especially large steel casting production, and greatly reduces casting defects and post-treatment workload.

The invention discloses a hot-melt double-sided adhesive tape and a preparation process thereof, and belongs to the technical field of double-sided adhesive tapes, the double-sided adhesive tape comprises a hot-melt adhesive layer and a release film, and the hot-melt adhesive layer is obtained by coating a hot-melt adhesive on the release film and then drying; the hot melt adhesive comprises the following raw materials in parts by weight: 80-95 parts of matrix resin, 10 parts of tackifying resin and 10-20 parts of modified magnetic boron nitride, the preparation method comprises the following steps: weighing a hot melt adhesive raw material, adding a solvent, preparing a hot melt adhesive solution with the solid content of 20-40wt%, coating one surface of the release film with the hot melt adhesive solution, and drying under the action of an external uniform magnetic field. The hot melt adhesive layer contains modified magnetic boron nitride, and is directionally arranged on the surface of the release film under the action of a magnetic field in the preparation process of the hot melt adhesive layer, so that the interface thermal resistance is reduced, the heat-conducting property of the coating is remarkably improved, and the heat dissipation performance of the lithium battery is improved.

The invention belongs to the field of high polymer materials, and particularly discloses a novel method for synthesizing a high-viscosity salt-tolerant sodium polyacrylate thickener and preparation of a three-in-one thickener, and the novel method comprises the following steps: weighing a certain amount of acrylic acid without a polymerization inhibitor, adding a certain amount of pure water, neutralizing with a NaOH solution with a certain concentration, slowly dropwise adding into the NaOH solution, and reacting at the temperature of 50-60 DEG C for 2-3 hours to obtain the high-viscosity salt-tolerant sodium polyacrylate thickener. The preparation method comprises the following steps: adding sodium acrylate into a sodium acrylate solution, keeping the temperature to be less than 40 DEG C, preparing a sodium acrylate neutralization solution with the neutralization degree of 80% and the solid content of 20-45%, and polymerizing under ultraviolet irradiation by using sodium sulfite (Na2SO3) and utilizing a UV photocuring technology, thereby obtaining the high-viscosity salt-tolerant sodium polyacrylate thickener. On the basis, the three-in-one thickening agent with high viscosity, salt resistance and moisturizing functions is further prepared, and wider application of the sodium polyacrylate thickening agent is developed.

The invention provides a preparation method of negative electrode slurry, a negative electrode plate and a battery, and the preparation method of the negative electrode slurry prepared by the invention comprises the following steps: S1, preparing a first glue solution by using a first binder and water; carrying out dry powder mixing on a negative electrode main material and a first conductive agent, adding the first glue solution, and continuously mixing to obtain a first mixed system; s2, adding part of a second binder into the first mixed system, and mixing to obtain a second mixed system; s3, continuing to add the remaining second binder into the second mixed system to obtain a third mixed system; s4, adding a second conductive agent into the third mixed system, and mixing to obtain a fourth mixed system; and S5, adding a third binder into the fourth mixed system, mixing, and adjusting the solid content and viscosity to obtain the negative electrode slurry. The negative electrode slurry has the advantages of high uniform dispersion stability, no obvious settlement under long-time storage, small viscosity change, high stripping force of the prepared pole piece, and good cycle performance of the battery.

The invention provides high-bending-resistance injectable magnesium phosphate bone cement. The high-bending-resistance injectable magnesium phosphate bone cement is prepared from solid-phase powder, reinforcing filler and water, the solid-phase powder comprises the following components in parts by weight: 50-70 parts of magnesium phosphate salt and 30-50 parts of hydrogen phosphate, and the magnesium phosphate salt comprises trimagnesium phosphate; the reinforcing filler comprises a polyurethane modified epoxy resin emulsion; based on the polyurethane modified epoxy resin emulsion with the solid content of 30%-50%, the mass fractions of the solid phase powder, the reinforcing filler and the water in the bone cement are 66-70 wt%, 1-7 wt% and 23-33 wt% respectively. The high-bending-resistance injectable magnesium phosphate bone cement is high in bending strength and suitable for bone defect areas bearing multidirectional loads.

The invention belongs to the field of nano material preparation, and particularly relates to a preparation method of water-soluble heme, which adopts an anti-solvent precipitation method, accurately controls an anti-solvent precipitation process through an ultrasonic microreactor or a micromixer, and realizes continuous preparation of water-soluble heme with small size, high solid content and excellent stability. The particle size of the water-soluble heme obtained through the preparation method is 200 nm or below, the solid content in water can reach 200-500 mg / mL, and the water-soluble heme can be used as a health care product or a food additive.

The invention relates to the technical field of manufacturing of gum dipping labor protection appliances, in particular to waterborne polyurethane for labor protection gloves and a preparation method of the waterborne polyurethane. According to the waterborne polyurethane for the labor protection gloves, the solid content ranges from 45% to 50%, the viscosity is basically maintained between 56 mPa.s and 58 mPa.s, the average particle size of polyurethane in emulsion ranges from 300 nm to 500 nm, the potential of the emulsion ranges from-35 mV to-50 mV, the waterborne polyurethane has good dispersion stability and high solid content, and after being cured into an adhesive film, the waterborne polyurethane has high strength and good flexibility at the same time; the waterborne polyurethane working gloves obtained by dipping the waterborne polyurethane have excellent friction resistance, tear resistance and penetration resistance.

The invention relates to the technical field of H01M4 / 62, in particular to a dispersing and softening agent for lithium battery positive electrode slurry and a preparation method and application thereof.The dispersing and softening agent at least comprises, by mass, 10-90% of block comb-type copolymer and the balance polyurethane copolymer, and the dispersing and softening agent can be used for dispersing and softening lithium battery positive electrode slurry on the premise that the addition amount does not exceed 0.5%. And meanwhile, the problems that the dispersity is poor after the solid content is increased and the flexibility of the pole piece is poor in the thick coating and fast coating processes are solved.

The invention belongs to the technical field of solid-state batteries, and relates to a preparation method of sulfide all-solid-state battery positive electrode slurry. The preparation method comprises the following steps: (1) dividing a conductive adhesive into three parts, mixing the first part of conductive adhesive with a positive active material, and granulating; (2) adding a second part of conductive adhesive into the granulated slurry, and kneading; (3) adding sulfide electrolyte slurry into the kneaded slurry, and dispersing; and (4) adding a third part of conductive adhesive into the dispersed slurry, and dispersing again to obtain the positive electrode slurry, wherein based on the total mass of the conductive adhesive, the mass percent of the first part of conductive adhesive is 20-30%, the mass percent of the second part of conductive adhesive is 30-40%, and the mass percent of the third part of conductive adhesive is 40-50%. The sulfide all-solid-state battery positive electrode slurry prepared by the preparation method provided by the invention has obviously higher solid content, obviously lower fineness and better stability.

The invention relates to the field of phenolic resin adhesives, and particularly discloses a preparation method of a phenolic resin adhesive for a bamboo oriented strand board, which comprises the following steps: (1) phenol activation: adding phenol and a basic catalyst aqueous solution into a reaction kettle, and activating to form an intermediate state of phenate negative ions; (2) addition stage: adding a high-concentration formaldehyde reactant into the reaction kettle, and carrying out heat preservation reaction to generate hydroxymethyl phenol; (3) heating and replenishing: heating to 80 + / -2 DEG C, keeping the temperature, replenishing the formaldehyde aqueous solution into the reaction kettle, and keeping the temperature for 20-25 minutes; (4) polycondensation stage: adding a basic catalyst aqueous solution, heating to 90 + / -2 DEG C, and carrying out heat preservation reaction; and (5) terminating the reaction: after the heat preservation reaction, detecting the viscosity, cooling, and discharging to obtain the adhesive. The phenolic resin with the solid content of 60% or above can be prepared, the adhesive has excellent bonding performance, and the prepared shaving board is excellent in mechanical strength.

To provide an aqueous filler composition that forms a ground coating film provided with cracking resistance, without causing adverse effect on finishing properties of subsequent top coat paint, excellent in coating work, and less in concealment unevenness, even when a wool roller is used.SOLUTION: An aqueous filler composition used to form a ground coating film using a wool roller prior to applying a top coat paint, comprises an aqueous resin (A) with a glass transition temperature of 30°C or lower, carbon black paste (B), pigment (C), urethane associative thickener (D), and water, where the pigment volume concentration is in the range of 30 to 65%. The content of the urethane associative thickener (D) is 0.1 to 2.5 pts.mass in an effective component amount based on 100 pts.mass of the resin solid content in the aqueous filler composition, and the brightness of the coating film formed by the aqueous filler composition is in the range of 70 to 92.SELECTED DRAWING: None

Provided in the present application are a polymer and a preparation method therefor, a positive electrode sheet, a secondary battery, and an electric device. The polymer comprises a structure as represented by formula I, wherein X comprises a phosphate group or a phosphite group, R1 and R3 each independently comprise at least one of a polyether chain segment, a polyester chain segment, hydrogen and a hydrocarbon group, and at least one of R1 and R3 comprises a polyether chain segment or a polyester chain segment; and R2 comprises an organic chain segment. The polymer provided in the present application can effectively improve the maximum solid content of a positive electrode slurry, shorten the filtering time, improve the production efficiency and quality of the electrode sheet, and also improve the flexibility of the electrode sheet.

The invention provides a control method and device of sizing material production equipment, electronic equipment, a medium and a product. The method comprises the steps that first index data of mixed powder in a powder mixing device and second index data of a liquid material in a liquid material mixing device are obtained; the first index data comprises particle size, water content, fluidity parameter, apparent density and first temperature; the second index data comprises the first density and / or the first viscosity; under the condition that the first index data and the second index data meet a first preset condition, the mixed powder and the liquid material are sequentially conveyed to a rubber mixing reaction device at a first conveying rate and a second conveying rate; detecting third index data of the sizing material in the sizing material mixing reaction device at a preset moment; the third index data comprises second density, second viscosity, mass and solid content; under the condition that the third index data meets the second preset condition, production of the target rubber material is achieved. According to the method, the production efficiency is improved, and the product quality is stabilized.