148results about How to "Shorten dispersion time" patented technology

The invention provides a fire extinguishing agent. The fire extinguishing agent is prepared by evenly mixing 1-25 parts of hydrophilic solid powder and 100 parts of water or water solution, and then adding 0.001-2 parts of surfactant for evenly mixing; and then adding 2-100 parts of hydrophobic solid particles. The invention provides a preparation method of the fire extinguishing agent. Compared with the existing fire extinguishing agent, the fire extinguishing agent can simultaneously play stifling, cooling and chemical inhibition roles, and the fire extinguishing efficiency is high; according to the fire extinguishing agent, due to addition of the surfactant in the water phase, the dispersion of rotating speed in preparation process can be lowered, the dispersion time can be shortened, and the preparation efficiency can be improved; and with the fire extinguishing agent, the adhesion property of solid gas interface and liquid gas interface can be greatly improved, the usage amount for extinguishing fire can be greatly reduced, and the fire extinguishing property can be obviously improved.

The invention provides viscose containing natural antimicrobials. The viscose containing the natural antimicrobials comprises the viscose and the antimicrobials contained in the viscose. The viscose containing the natural antimicrobials is characterized in that the antimicrobials is natural indigowoad leaf extract powder, a natural indigowoad leaf extract powder solution added with dispersing agent is added into a viscose filature stock solution, the additive amount of the natural indigowoad leaf extract powder is 1%-7% of the quality of the viscose filature stock solution, the additive amount of the dispersing agent in the natural indigowoad leaf extract powder solution is 0.1%-1.0% of the quality of water in the natural indigowoad leaf extract powder solution. The preparation method of the viscose comprises the steps of dissolving the indigowoad leaf extract powder into water and adding the dispersing agent to obtain the indigowoad leaf extract powder solution, adding the indigowoad leaf extract powder solution to the viscose filature stock solution according to a ratio of 10%-14% of the quality of the viscose filature stock solution, and then shaping a obtained solution according to conventional wet spinning jet process to obtain the viscose. The viscose has a durable antibacterial function and has no side effect on human bodies. The preparation method has reasonable and simple technology, and is suitable for industrialized production.

The invention discloses negative pole slurry of a lithium ion battery, a rapid preparation method thereof and a negative pole piece of the lithium ion battery. The preparation method comprises the following steps: stirring an active substance, a conducting agent and a thickening agent in a stirring machine at a low speed to form mixed powder, then in the state that low-speed stirring of the mixed powder is maintained, adopting a spraying manner to add a first solvent, carrying out high-speed stirring to form spherical particles, then adopting the spraying manner again to inject a second solvent into the spherical particles, carrying out high-speed stirring and low-speed dispersion to prepare slurry, then directly adding remaining solvent, carrying out low-speed stirring and high-speed dispersion to prepare a mixed solution, finally adding an adhesive, and carrying out low-speed stirring and low-speed dispersion to prepare the negative slurry of the lithium ion battery. The addition of the solvents adopts stirring and spraying manners, and the power is rapidly moistened to form the uniform spherical particles, so that the total mixing time is reduced, the production efficiency is improved, and the equipment energy consumption is reduced. The negative pole slurry of the lithium ion battery prepared by the method has high stability, and the negative pole piece dried and prepared by the negative pole slurry coated on a current collector is relatively attractive in appearance.

The invention discloses a membrane electrode for a fuel cell, and a preparation method and a packaging method thereof. A catalysis layer of the membrane electrode provided by the invention is composed of a catalyst slurry on a proton exchange membrane. The catalyst slurry comprises a catalyst, a binder, a disperse solvent, a thickening agent and an additive, and the catalyst is one selected from a Pt catalyst or a Pt alloy catalyst. The preparation method of the membrane electrode provided by the invention comprises the steps of preparation of the catalyst slurry for the membrane electrode, coating of the catalyst slurry and assembly of the membrane electrode. The preparation method of the catalyst slurry provided by the invention can shorten disperse time of the slurry and increase disperse efficiency, and the obtained catalyst slurry can realize transfer rate of 100% in a membrane electrode subassembly preparation process by a transfer printing method, so as to substantially increase utilization rate of the catalyst and electrochemical performance of the membrane electrode and effectively reduce the production cost of the fuel cell.

The invention provides an environment-friendly bacteriostatic water-based ink for tipping paper, which is characterized by consisting of the following raw materials in mass percentage: 45 to 55 percent of water, 3 to 10 percent of ethanol, 1 to 3 percent of antibacterial agent, 2 to 4 percent of anti-settling agent, 9 to 15 percent of titanium dioxide, 4 to 6 percent of calcium bicarbonate, 1 to 3 percent of GR organic dye, 5 to 10 percent of GR organic dye yellow, 1 to 3 percent of GR organic dye black, and 18 to 25 percent of binder. The environment-friendly bacteriostatic water-based ink can greatly reduce usage amount of ink and contents of arsenic, mercury and lead, prevents heavy metals such as the arsenic, the mercury, the lead, cadmium, nickel and chromium in a print from causing harm to human body, improves working environment, delays dispersing time of the antibacterial agent, increases antibacterial effect, has better viscosity stability and low inflammability, can simplify workload for printing and washing, and improves production efficiency.

The invention discloses gravure printing ink for a poly(ethylene terephthalate) (PET) base material and a preparation method for the gravure printing ink, and aims to provide ink having the advantages of good fluidity, high adhesion, high gloss, simple and feasible preparation method, safe use and environment friendliness, and a preparation method thereof. The ink comprises the following components: an organic pigment or an inorganic pigment, resin, an adhesion promoter, a dispersing agent and the balance of organic mixed solvent. The ink is prepared by the following steps of: mixing dimethyl carbonate, ethyl acetate and n-propyl alcohol to obtain a mixed solvent, and dissolving the resin; and mixing with the organic pigment or the inorganic pigment, stirring and dispersing to obtain a semi-finished product of color paste, fully grinding on a sand mill, adding the adhesion promoter and the dispersing agent, fully stirring, and filtering off components of which the fineness is more than 15mu m by using a filtering machine to obtain the gravure printing ink for the PET base material.

The invention provides a dispersible tablet of cefuroxime axetil, wherein the preparation formula includes cefuroxime axetil, loading agents, flow aid, disintegrating agents, surface-active agents, flavoring agents, lubricant, essence, and coating powder. According to the invention, specific disintegrating agents are adopted, meanwhile, the use amount of the disintegrating agents is not increased, the dispersion time of the dispersible tablet is shortened, and the dissolution rate of the dispersible tablet is improved; and meanwhile, flavoring agents and essence are added in the formula to mask bitter of the dispersible tablet of cefuroxime axetil, so that the mouth feel of a patient taking the dispersible tablet of cefuroxime axetil can be improved.

The invention provides a lithium ion battery and a positive electrode slurry stirring method therefor, and belongs to the technical field of lithium ion batteries. The positive plate of the lithium battery comprises a positive current collector and positive slurry coated on the positive current collector, wherein the positive electrode slurry contains a positive electrode active substance, a conductive agent and a binder; the positive electrode active substance is a mixture of lithium nickel cobalt manganate, lithium iron phosphate and lithium manganite; a mixer circulating water temperature control regulating system comprises a temperature frequency conversion regulating switch and a circulating water heating system in the stirring process of the positive electrode slurry of the lithium ion battery, and the circulating water temperature of the circulating water heating system is set to be 45-75 DEG C. The dispersity of the lithium battery positive electrode slurry is improved, the stirring time is shortened, the production qualification rate and the consistency of the lithium batteries are improved, and the lithium battery positive electrode slurry has higher convenience and operability and economic and practical values.

The invention discloses a preparation method of forest frog oil polypeptide microencapsulation. The preparation method comprises the main steps of carrying out controllable enzymatic hydrolysis on forest frog oil to obtain a polypeptide core material solution, slowly adding a wall material under the mixing condition (wherein the wall material is prepared from the following components in percentage by weight: 1-10 percent of concentrated whey powder, 1-10 percent of maltodextrin and 0.5-5 percent of beta-cyclodextrine), adding 0.1-1 percent of monoglyceride, carrying out high-speed shearing and homogenizing treatment to obtain an emulsified feed liquid, and carrying out low-temperature spray drying treatment to obtain forest frog oil polypeptide microcapsule powder. With the adoption of the forest frog oil polypeptide microencapsulation, the content of a forest frog oil polypeptide core material is above 10 percent, the embedding rate is above 60 percent, the powder collection rate is above 53 percent, and the sensory property of the forest frog oil polypeptide microencapsulation powder is good without fishy smell; compared with core material spray drying powder without microencapsulation, the forest frog oil polypeptide microencapsulation powder has the advantages that the moisture content is lowered by above 30 percent, the solubility is increased by 3.5 percent, the hygroscopicity is lowered by 22 percent, and the dispersion time is shortened by above 30 percent. The preparation method has the characteristics that by virtue of the microencapsulation method, the fishy smell of a forest frog oil polypeptide product is removed effectively, the raw material waste is avoided, the operation is simplified and industrial production can be promoted.

The invention relates to a high shearing production method for a film coating agent. The innovation of the invention is that the production method comprises the following steps of: refining of a colorant, coating of the colorant, compounding of the coated colorant, and plasticization of a mixture. The invention provides the innovative high shearing production method for the film coating agent, adopts a high-speed shearing mode to perform dry dispersion on an insoluble colorant, coats a surfactant to prevent the colorant from agglomerating at the same time, finishescomplete mixing of a film former and even distribution of a plasticizer under low-speed shearing conditions, and has the advantages of high production efficiency, low energy consumption, good application performance of obtained finished products of the coating agents and the like.

The invention discloses a method for improving an oil absorption value of a white carbon black product. In order to overcome the defects that after performing pressure filtration, white carbon black prepared by the existing gel method is pulped for 2-3 hours, and the oil absorption value of white carbon black is reduced because of destruction of a mechanical force to a secondary structure of white carbon black, and the like, the method disclosed by the invention shortens the dispersing time of white carbon black slurry by shortening the pulping time of white carbon black, and refines the pulped white carbon black by using a refining pump. The method is used for improving the oil absorption value of the white carbon black product; and by using the method, the oil absorption value of white carbon black is improved by 0.3-0.4, and simultaneously, power consumption can be saved by about 55 kilowatt-hours when each ton of white carbon black is produced. Thus, the method has obvious economic benefits.

The invention discloses a water-based color paste and a preparation method thereof. The water-based color paste comprises a dispersant, water, an organic pigment and a preservative. The preparation method of the water-based color paste comprises the following steps: firstly, preparing a high-efficiency dispersant; adding 20-22% of high-efficiency dispersant, 41-45% of water, 35-45% of organic pigment and 0.15-0.25% of preservative into a dispersion machine; dispersing at low speed for 10 minutes; after all components are fully wetted, dispersing at high speed for 30 minutes; mixing all components into slurry; after dispersing, injecting the slurry into a horizontal sand mill for milling for 8-16 hours at the temperature lower than 20 DEG C to obtain the water-based color paste; then, filtering the color paste, and discharging the filtered color paste; and finally, detecting the discharged color paste. The invention has the advantages of simple preparation method, safety and environmental protection, shortens the reaction time, improves the production efficiency, and ensures the dispersibility of products.

The invention discloses a preparation method for an aluminum borate whisker preform which is characterized by comprising the following steps: according to the proportion, aluminum borate whisker, aluminum phosphate, water and sodium polyacrylate are placed in an agitator, the rotating speed of which is adjusted to be 180 to 220 revolutions per second; the mixture is stirred and dispersed for a plurality of times in a time-shared way, and then mixed slurry is obtained; 80 percent of water in the mixed slurry is filtered and the rest is placed in a concave mould for pressure maintaining for five to eight minutes; the mould is taken off to gain a bisque of the preform; the dried bisque of the preform is sintered at the temperature of 800 to 900 DEG C in a muffle furnace for two to three hours; the bisque is cooled with the furnace and the whisker preform is obtained. In the method, the sodium polyacrylate with concentration of 0.3 to 0.5 percent is taken as dispersant, the aluminum borate whisker is stirred and dispersed for a plurality of times in the time-shared way, and meanwhile the aluminum phosphate is added as adhesives, so that the whisker is guaranteed to be fully soaked and then dispersed, and meantime, the adhesives is totally fused into the slurry. Compared with the present ultrasonic dispersion technique, the method shortens the original dispersion time of one to two hours to 3.5 to 5.5 minutes, thus reducing the cost.

The invention relates to a black dulling polyimide film, belongs to the field of high polymer materials, and particularly relates to a black polyimide film and a preparation method thereof. The black polyimide film comprises black mixed solution and polyamic acid resin, wherein the black mixed solution is composed of carbon powder and a dimethylacetamide solution. The black polyimide film comprises 5-15 parts of black mixed solution and 70-215 parts of polyamic acid resin. The black mixed solution comprises, by weight parts, 1-3 parts of carbon powder and 4-12 parts of dimethylacetamide solution. Packing adopted for the black polyimide film has good dyeing capability, is excellent in color stabilizing performance and can be well dispersed in the polyamic acid resin to form uniform and stable suspension. Compared with the prior art, according to the black polyimide film and the preparation method, the dispersion time of the carbon powder is shortened, the dispersion effect is guaranteed; and the produced film is stable in thermal properties, high in coefficient of thermal expansion and thermal decomposition temperature, and wide in use range.

The invention discloses a low-compressive creep and high temperature-resistant ethylene propylene rubber material and a preparation method thereof, and belongs to the technical field of rubber. The rubber material comprises the following components in parts by weight: 100 parts of raw ethylene propylene rubber, 5 parts of zinc oxide, 1.2 parts of stearic acid, 2 parts of an antiager 445, 4-8 partsof Ative CHO, 45-55 parts of fast extruding carbon black N550, 5-10 parts of a softening and plasticizing agent S2550, 1.5-2.0 parts of a crosslinking auxiliary agent N308E and 6.0-8.0 parts of a vulcanizing agent GF-45. The rubber material has excellent high temperature resistance, has good physical properties after aging at 175 DEG C, has a significant advantage of low compression set, and meets performance requirements of German Volkswagen PV3330 and PV3307 standards on the compression set.

The invention relates to a polymer drag reducer swelling treatment method for shortening the onset time of a drag reducer. According to the technical scheme, the method comprises the following steps of firstly, cutting a polymer solid body into pieces, and placing the pieces into a reaction still; secondly, filling the reaction still with carbon dioxide to enable the reaction still to be in the supercritical state; thirdly, after polymers swell, deloading the carbon dioxide in the reaction still and taking out samples; fourthly, weighing the samples, and placing the samples into a freezing barrel for low-temperature treatment; fifthly, transferring the samples into a crusher to be roughly broken and ground; and sixthly, adding parting agents, and after ball milling and mixing, obtaining apulpous oil product drag reducer product which takes effect quickly. The polymer drag reducer swelling treatment method for shortening the onset time of the drag reducer has the beneficial effects that treatment is carried out through supercritical fluid before low-temperature crushing to enable the polymers to have the swelling effect and then be subjected to low-temperature crushing and grinding, the technological requirements for sufficient isolation and suspension are met, and therefore, with the treatment method, the time for swelling, dissolution and dispersion of the drag reducer in theoil product can be shortened, and the drag reducer can show the drag reduction and delivery quantity increase effects more quickly.

The invention relates to a method for dispersing phosphor, which adopts the process that: first, the phosphor, water and dispersant are mixed and then dispersed by a dispersion machine; after being dispersed, a dispersing ball is fished out and then the phosphor serum is separated by decompressing dispatch; at last, the separated phosphor serum is dehydrated in order obtain dispersed green emitting phosphor. The invention has the advantages of simple technology, short cycle for manufacturing phosphor, low manufacturing cost of phosphor, small decreasing extent of phosphor brightness and high phosphor brightness. The invention adopts a columniform nylon ball with smaller specific gravity than the phosphor and small impact to the phosphor; therefore, the ball can open the phosphor for agglomerating without damaging the surface of single phosphor crystal, thus, the decreasing extent of dispersed phosphor brightness is very small and the brightness of the product coated with phosphor is high.