17results about How to "Guaranteed dispersion stability" patented technology

The invention discloses a composite material for repairing concrete cracks by regulating and enhancing polyurea through few-layer hydrotalcite, which comprises the following three steps: S1, adding hydrotalcite and a modifier into deionized water, heating to 70-85 DEG C, carrying out constant-temperature stirring reaction for 10-12 hours, after the reaction is finished, cooling, filtering and collecting solids, cleaning with deionized water, and then freeze-drying to obtain a composite material; further carrying out ball milling treatment to obtain modified few-layer hydrotalcite; s2, uniformly mixing the modified few-layer hydrotalcite with polyether polyol, and carrying out vacuum dehydration at the temperature of 100-160 DEG C for 1-3 hours; and S3, adding the dehydrated mixture into isocyanate, quickly and uniformly mixing, and then pouring the mixture into a mold for molding. By adding the modified few-layer hydrotalcite, the tensile strength of the polyurea composite material can be regulated and controlled between 20 MPa and 32 MPa, the tensile strength of the polyurea composite material is basically matched with the concrete while the interface bonding performance of the polyurea and the concrete is guaranteed, and the long-term use performance of the repaired concrete is improved.

The invention relates to the technical field of mineral flotation, and discloses a method for compounding a lithium oxide collecting agent in a low-temperature environment, and the lithium collecting agent comprises the following compounding raw materials in percentage by mass: 15-25% of palmitic acid soap; 10%-20% of sulfonated petroleum; 5% to 10% of iso-tridecanol polyoxyethylene ether; 8%-15% of fatty alcohol-polyoxyethylene ether; 3%-8% of polyoxyethylene ether sodium sulfonate; 5%-10% of dipropylene glycol monomethyl ether; 8%-15% of sodium carbonate; 2%-5% of sodium hydroxide; 0.5%-2.0% of sodium fluoride; 0.5%-2.0% of aluminum sulfate; 1%-4% of tannic acid; a synergistic surfactant system is formed by constructing palmitic soap and sulfonated petroleum as a main collecting frame and compounding isomeric alcohol ether, fatty alcohol-polyoxyethylene ether and polyoxyethylene ether sodium sulfonate, dipropylene glycol monomethyl ether is introduced as a low-temperature mutual solvent, and the low-temperature mutual solvent is used for collecting the high-temperature-resistant oil-displacing agent for the oil-displacing oil-displacing agent for the oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil-displacing oil. The freezing point and viscosity of a collecting agent system are greatly reduced, the liquidity, uniformity and dispersion stability of the collecting agent are still kept when the collecting agent is used in the low-temperature environment of 0-15 DEG C, and the failure problem caused by low-temperature solidification or layering is fundamentally avoided.

The present application relates to a kind of high stability water-in-oil PDRN emulsion and its preparation method, belong to the field of biotechnology;The preparation method includes the following steps: (1) PDRN enzymolysis: PDRN is added in DNaseI, supplement metal ion activates enzyme, when fragment enrichment shows <800bp, terminate enzymolysis reaction, obtain crude enzymolysis solution;(2) moderate molecular weight screening: pressurized ultrafiltration crude enzymolysis solution with ultrafiltration membrane, and screen out the target fragment of the permeate of molecular weight in 120-500bp;(3) water phase system optimization: 1,3-propanediol and ubiquinol are added in the permeate;(4) semi-continuous feeding gradient emulsification.The present application is by precise control PDRN molecular weight to take into account stability and solubility, optimize water phase component to realize system viscosity and transparency double standard, cooperate gradient emulsification to guarantee water-in-oil system stability, significantly improve product comprehensive quality and application value, with outstanding technical advantages.

This invention relates to the field of carbon nanotube technology, specifically disclosing a high-viscosity carbon nanotube conductive paste and its preparation method. The raw materials for this high-viscosity carbon nanotube conductive paste include ultra-long single-walled carbon nanotubes, short-cut multi-walled carbon nanotubes, conductive carbon black, carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, polyacrylic acid, fluorinated silane coupling agent, γ-butyrolactone, and N-methylpyrrolidone. The high-viscosity carbon nanotube conductive paste provided by this invention achieves uniform dispersion, low volume resistivity, excellent anti-settling properties, and good coating processability of the carbon nanotube conductive paste under high solids content through the synergistic effect of the carboxyl-terminated hyperbranched polyester-polyethylene glycol block copolymer, the fluorinated silane coupling agent, and polyacrylic acid, combined with multi-stage grinding and high-pressure homogenization processes.

The present invention relates to the technical field of agricultural pesticides, and more particularly to a water-dispersible granule comprising thiamethoxam and cyhalothrin and a preparation method thereof, wherein the water-dispersible granule is composed of an active pesticide component, a dispersant, a disintegrant, a foliar adhesive, a binder and a filler. The combined use of thiamethoxam, cyhalothrin and catechin in the active pesticide component can achieve a synergistic effect, effectively enhancing the control effect; the cardanol-modified hydroxyethyl cellulose component in the foliar adhesive has hard water resistance and wetting and adhesion performance, which is conducive to regulating the dispersion and suspension effect of the water-dispersible granule in hard water and the wetting and spreading effect of droplets after spraying, and the L-ascorbyl palmitate component in the foliar adhesive is conducive to improving the adhesion and retention rate of the water-dispersible granule after being sprayed on the leaf surface, so that the active pesticide component is better adhered to the plant surface, and the loss caused by rainwater scouring is reduced.

The invention relates to the technical field of lithium batteries, and discloses inorganic compound slurry and lithium battery positive electrode slurry containing the same. The inorganic compound slurry comprises inorganic compound solid particles, a dispersing agent A and a dispersing agent B, wherein the dispersing agent A is selected from one or more of amine compounds containing ether chains; the dispersing agent B is selected from one or more of phosphoric acid compounds containing ether chains. The inorganic compound slurry contains the dispersing agent A and the dispersing agent B at the same time, the dispersing agent A and the dispersing agent B are compounded, the synergistic modification effect on the surfaces of inorganic compound solid particles is achieved, and when the inorganic compound slurry is mixed into the lithium battery positive electrode slurry, the agglomeration effect between the solid particles can be reduced; and meanwhile, the problem that the viscosity is sharply increased after the inorganic compound slurry is mixed into the positive electrode slurry is also solved.

The utility model discloses a kind of imidacloprid suspending agent spraying devices, belong to imidacloprid suspending agent spraying device technical field, its technical scheme main points include electric hybrid car, the inner wall of the electric hybrid car is provided with stirring shaft, the left side of the electric hybrid car is fixedly connected with lifting frame, the left side of the lifting frame is provided with telescopic hose, the bottom of the telescopic hose is movably connected with spraying mechanism, the left side of the electric hybrid car is provided with pump body, solve the existing imidacloprid suspending agent spraying device when using, device moves with poor site adaptability, difficult to flexibly respond different operation scene, and height adjustment, component synergy is insufficient, easily lead to spraying height and target mismatch, uneven distribution of reagent, simultaneously, reagent mixing is mostly dependent on manual stirring of staff, when carrying out a period of spraying work, easy to appear precipitation condition, affect subsequent spraying effect, reduce the problem of pest control quality.

The application discloses a high water pressure resistant, low temperature flexible waterproof and moisture permeable composite fabric and a preparation method thereof. The modified nano silicon dioxide has a nano scale effect, can efficiently shield ultraviolet radiation, and has chemical stability, endowing the material with inherent ability to resist external salt corrosion, and builds a double barrier of resistance to ultraviolet and salt corrosion in the fiber. The micro-nano surface topology of the pine needle shell layer increases the effective exposed area of the modified nano silicon dioxide, optimizes the functional interface, and the axial hollow cavity forms a stress buffer channel in the fiber, reduces the damage of external mechanical stress to the modified nano silicon dioxide dispersion structure to maintain uniform distribution. The high efficiency shielding and chemical resistance of the modified nano silicon dioxide resist ultraviolet penetration and salt erosion, and the micro-nano structure and hollow cavity of the pine needle shell layer maintain low temperature flexibility, and realize the balance of high water pressure resistance, waterproof and moisture permeability and resistance to ultraviolet and salt corrosion.

The invention belongs to the technical field of electronic materials, and discloses a magnesium-strontium double-doped calcium fluoride crystal and a preparation method and application thereof.The method comprises the steps that firstly, disodium ethylene diamine tetraacetate is chelated with calcium and magnesium ions, and the calcium and magnesium ions and villiaumite are subjected to a coordination exchange reaction to prepare a magnesium-doped calcium fluoride microsphere precursor; regulating and controlling hydrolysis of 3-aminopropyltriethoxysilane through an absolute ethyl alcohol-deionized water mixed solvent, and realizing uniform anchoring and deposition of strontium ions by virtue of an interface connection effect of the 3-aminopropyltriethoxysilane, so as to construct a magnesium-strontium double-doped precursor with a core-shell structure; carrying out hot pressed sintering in a CF4 / Ar mixed atmosphere to obtain a high-density polycrystalline blank; and finally, finishing crystal oriented growth by adopting a Bridgman-Stockbarger method. Through the synergistic effect of the components in the whole process, gradient uniform doping of magnesium and strontium ions is achieved, lattice distortion is effectively eliminated, the optical uniformity, the anti-laser-damage threshold value and the mechanical stability of the crystal are improved, and the prepared crystal can be widely applied to manufacturing of special electronic materials such as semiconductor wafers and the like and has good industrialization prospects.

This application relates to the field of glass processing technology and discloses a method for controlling the heat treatment of tempered glass with low self-explosion and high stability. The method includes the following steps: float soda-lime silicate glass sheets are heated and softened, then rapidly quenched. When the core temperature drops to 395℃~405℃, the air pressure is reduced, and a water-based polymer atomized heat transfer modulator is sprayed in. The temperature drops to 320℃, with a cooling rate of 12.0~18.0℃ / min. The temperature is then further reduced to 310℃~320℃ and cooled to 40℃ with pure air. The float soda-lime silicate glass sheets are then placed in a forced convection hot-dip furnace and heated to 255℃~265℃ for alternating circulation. The frequency difference between the top and bottom circulating fans is controlled to generate an in-plane temperature difference and additional in-plane alternating stress in the float soda-lime silicate glass sheets. After the process, the glass is cooled down at the same frequency and removed from the furnace. This invention employs a technical solution of spraying a water-based polymer atomized heat transfer modulator while the glass core temperature is reduced to a specific range, thus effectively constraining the local cooling rate within a reasonable range.

The invention relates to the technical field of agricultural insecticides, in particular to a water dispersible granule containing thiamethoxam and cyhalothrin and a preparation method of the water dispersible granule, and the water dispersible granule is prepared from pesticide active ingredients, a dispersing agent, a disintegrating agent, a foliar adhesive, a binder and filler. The thiamethoxam, cyhalothrin and catechin in the pesticide active components are combined for use, so that a synergistic interaction effect can be achieved, and the prevention and treatment effect is effectively enhanced; the cardanol modified hydroxyethyl cellulose component in the foliar adhesive has hard water resistance and wetting adhesion performance, and is beneficial to adjusting the dispersion suspension effect of water dispersible granules in hard water and the wetting spreading effect of liquid drops after spraying; the L-ascorbyl palmitate component in the leaf surface adhesive is beneficial to improving the adhesive force and retention rate of the water dispersible granules after the water dispersible granules are sprayed to leaf surfaces, so that the pesticide active components can be better adhered to the surfaces of plants, and the loss caused by rain wash is reduced.

The present invention relates to a slurry composition which can maintain excellent dispersion stability of a powder even if a binder is added. The means for solving the technical problem is a dispersant for fine particles formed from a polyether ester compound or a salt thereof, the polyether ester compound being an ester reactant of component (a1) and component (a2) and having an acid value of 85 to 220 mgKOH / g, component (a1): a polyether compound of formula (1) HO-(AO) m -H ··· (1) AO is an oxyalkylene group having 2 to 4 carbon atoms, the oxyethylene group accounts for 20% or more by mass of AO, m is 2 to 30, component (a2): a polybasic acid having 2 or 3 carboxyl groups or an acid anhydride thereof having 2 to 9 carbon atoms.

The present invention provides a GFAP, NFL and UCH-L1 combined detection kit, comprising: an acridinium ester labeled antibody working solution and a magnetic bead coated antibody working solution; the acridinium ester labeled antibody working solution contains acridinium ester labeled GFAP, NFL and UCH-L1 antibodies, and the magnetic bead coated antibody working solution contains magnetic bead coated GFAP, NFL and UCH-L1 antibodies. By screening the components and the content of each component of the acridinium ester labeled working solution and the magnetic bead labeled working solution, a stable working environment can be provided for the acridinium ester labeled GFAP, NFL and UCH-L1 antibodies and the magnetic beads labeled with the GFAP, NFL and UCH-L1 antibodies, and specific recognition and detection of GFAP, NFL and UCH-L1 are achieved, thereby realizing the triple detection of GFAP, NFL and UCH-L1 for early diagnosis of patients with brain trauma.

The invention relates to a C-CNTF / HfC-SiC ceramic matrix composite material and a preparation method thereof. The preparation method comprises the following steps: carrying out shearing dispersion treatment on HfC powder and optional graphene in a solvent to prepare a slurry dispersion liquid; impregnating fiber cloth by using the slurry dispersion liquid, drying and curing; laminating the fiber cloth, and sewing the fiber cloth in the Z direction by using continuous carbon nanotube fibers; dipping with HfC slurry, drying and curing; and dipping by using a polycarbosilane precursor, and then curing and cracking to obtain the ceramic-based composite material. The invention also relates to the composite material prepared by the method. According to the method, solid slurry with stable dispersibility is obtained by graphene-assisted shearing dispersion; uniform impregnation of the slurry is realized by adopting a multi-stage vacuum-pressure impregnation mode; directional regulation and control of the heat conductivity are realized through Z-direction sewing of the carbon nanotube fibers; finally, the composite material with excellent mechanical property and thermal protection property is obtained.

The invention relates to the technical field of floor materials, in particular to a high-wear-resistance plastic floor material and a production process thereof. The high-wear-resistance plastic floor material is prepared from the following components in parts by weight: 100 parts of PVC (Polyvinyl Chloride) resin, 20 to 30 parts of trioctyl trimellitate, 10 to 15 parts of dioctyl adipate, 8 to 15 parts of polyester type thermoplastic polyurethane elastomer, 3.0 to 4.5 parts of calcium-zinc stabilizer, 0.5 to 1.5 parts of lubricant, 8 to 12 parts of modified wear-resistant component and 0.1 to 0.5 part of dicumyl peroxide, wherein the modified wear-resistant component is characterized in that a shell layer is constructed on the surfaces of silicon nitride nanoparticles through silane coupling and ring-opening grafting reaction. According to the high-wear-resistance plastic floor material provided by the invention, the wear resistance of the material is improved, and the compatibility between inorganic silicon nitride nanoparticles and an organic matrix and the dispersity of the silicon nitride nanoparticles in the matrix are improved.

The present invention belongs to the technical field of light-emitting diodes, and in particular, relates to a method for preparing a zinc oxide nanomaterial, comprising the steps of obtaining a lithium hydroxide solution and anhydrous zinc acetate; mixing and dissolving the anhydrous zinc acetate and the lithium hydroxide solution in an anhydrous and oxygen-free environment, and then performing a thermal reaction to separate and obtain the zinc oxide nanomaterial. The method for preparing the zinc oxide nanomaterial provided by the present invention uses lithium hydroxide and anhydrous zinc acetate as raw materials, obtains the zinc oxide nanomaterial by thermal reaction in an anhydrous and oxygen-free environment, and reasonably regulates the reaction raw materials and reaction condition parameters, so that the particle size of the obtained zinc oxide nanomaterial is 5 to 7 nanometers, the particle size is small, the dispersion stability is good, and the energy gap is wide, reaching 3.7 eV.

A plant-based dispersion composition, a plant-based beverage and a preparation method thereof. The plant-based dispersion composition includes natural dietary fiber, maltitol, oat β-glucan and hawthorn powder; the natural dietary fiber includes seaweed dietary fiber and at least one selected from oat dietary fiber, vegetable dietary fiber and fruit dietary fiber; the seaweed dietary fiber includes fucoidan; the particle size D50 of the plant-based dispersion composition is 5-100 μm. The plant-based beverage of the present invention includes a dispersant and the plant-based dispersion composition stably dispersed in the dispersant, the content of the plant-based dispersion composition is 5-30 wt%, the dispersant includes one or more of deionized water and mineral water. This plant-based beverage is stably dispersed and has a delicate taste. It can be used for gastrointestinal function conditioning, inhibiting Helicobacter pylori adhesion and assisting in protecting the gastric mucosa, improving defecation discomfort and reducing the level of inflammatory factors, while enhancing satiety and making blood glucose release more stable.