14results about How to "Small fineness" patented technology

The invention provides a multi-nutrient balanced lick brick for grazing down producing goats as well as a preparation method and application thereof, and belongs to the technical field of animal feed development. The multi-nutrient balanced lick brick is prepared from the following raw materials in parts by weight: 20 to 100 parts of copper sulfate pentahydrate, 35 to 165 parts of zinc sulfate monohydrate, 0.1 to 1 part of sodium selenite, 54.5 to 270 parts of anhydrous ferrous sulfate, 10 to 40 parts of manganese sulfate monohydrate, 15 to 65 parts of 1 percent cobalt chloride, 0.2 to 2 parts of potassium iodide, 40 to 200 parts of DL-alpha-tocopheryl acetate, 0.2 to 2 parts of vitamin A acetate, 40 to 200 parts of calcium carbonate and 20 to 100 parts of adhesive. And 8855-9765 parts of sodium chloride. The proportion of various nutritional ingredients is reasonably adjusted, the requirements of the grazing cashmere goats for microelements and vitamins can be comprehensively met, then the cashmere density is increased, and the cashmere yield is increased. Meanwhile, the fineness of cashmere can be reduced, and the quality of cashmere is improved.

The invention discloses a conductive paste low-temperature laser sintering method and application thereof, and the method specifically comprises the steps: applying a low-temperature laser sintering technology to the sintering process of low-silver or silver-free conductive paste, and achieving the efficient and uniform molding of a conductive layer at a lower temperature through the control of the frequency, power density and wavelength of laser. The damage of high-temperature sintering to the material structure is avoided, the conductivity of the conductive paste is effectively improved, the use of silver is reduced, and the cost is reduced; besides, the conductive paste is modified by adding a modifier, and in practical application, the photovoltaic conductive paste with the silver content of 8.5% shows excellent conductivity after being subjected to laser-assisted sintering.

The invention provides a composite mineral admixture based on iron ore tailing mud and a preparation method thereof, and the composite mineral admixture comprises the following raw materials by weight: 30-40 parts of activated iron ore tailing mud, 5-10 parts of layered ultrafine powder, 5-10 parts of a methacrylic acid-cellulose copolymer, 5-7 parts of limestone powder, 1-3 parts of a composite grinding aid, and 1-3 parts of a composite activator. According to the composite mineral admixture disclosed by the invention, the mixing amount of the composite mineral admixture in cement can be increased to the maximum extent, the use amount of cement clinker is reduced, the production cost of the cement is reduced, the composite cement has more excellent mechanical properties, volume stability and durability, and the composite mineral admixture plays a role similar to a crystal nucleus effect in a cement hydration process; and meanwhile, the hydration products tend to be uniformly distributed in the whole interface transition area, the hydration products with better stability are generated, and the anti-permeability performance is improved.

The invention relates to the technical field of special camouflage coatings, in particular to a special camouflage coating and a preparation method thereof. 30-40 parts of a base material; 5-15 parts of a pigment; 0.8-2 parts of a coalescing agent; 0.5-1 part of a dispersant; according to the special camouflage paint and the preparation method thereof, the pigment adopts the pigment base material anatase type white powder to be matched with pigments in other colors for use, anatase type titanium dioxide is low in hardness, easy to grind and small in fineness, and after the anatase type titanium dioxide is used for the paint, the glossiness is high, the brightness is good, and the attractiveness of the camouflage paint is effectively improved; and the mixture is not easy to damage and fall off.

The present invention belongs to the technical field of solar cells, and in particular to the field of H01Q1 / 22, and more specifically to a conductive paste with added inorganic materials and a preparation method thereof. The raw materials for its preparation include, by mass percentage, 70-90% silver powder, 0.01-3% modified molybdenum oxide, 1-5% low-melting glass powder, and 5-15% organic carrier, and the preparation method includes the preparation of the organic carrier, the preparation of the low-melting glass powder, and the preparation of the modified molybdenum oxide, and the mixing and rolling of the slurry. The conductive paste prepared by the present invention has low contact resistance and good printing performance, and can improve the photoelectric conversion efficiency of solar cells.

This application discloses an additive for lithium-ion batteries and its application. The additive has the following raw material composition by weight: 40-70 parts first solvent; 1-10 parts first polymer; 5-15 parts second polymer; 10-20 parts small molecule organic amine; and 10-20 parts stabilizer. The first polymer contains at least one nitrogen-free polar functional group; the second polymer contains at least one nitrogen-containing polar functional group; and the stabilizer is a hydrazine compound. The additive provided in this application, when used in lithium-ion batteries, can solve the problems of thick electrodes easily cracking and the difficulty in dispersing positive electrode particles.

According to the present invention, a carbon fiber composite material, which has excellent energy absorption and is composed of a carbon fiber having high strength and high elongation, is provided by a production method yielding an excellent production amount. This carbon fiber bundle having a plurality of single fibers has a strand elastic modulus of 260-350 GPa, a strength of 6.5-8.5 GPa, an elongation of at least 1.8%, a filament number of 1,000-9,000, and a total fineness of 0.15-0.35 g / m, wherein the average value of major axis / minor axis ratios in single fiber cross sections is 1.01-1.08, the coefficient of variation is 1-4%, and the skewness is 0.3-1.2.

The utility model is suitable for sliding agent processing technical field provides a kind of solid lubricant smashing device of smashing fully, including mounting bracket, pre-smashing component and smashing component being installed on mounting bracket and scraping component and material blocking component being installed on smashing component, the smashing component includes the smashing cylinder being inclinedly arranged along horizontal plane, the third smashing shaft being rotatably arranged in smashing cylinder and the smashing cutter being arranged around third smashing shaft, the scraping component includes multiple installation rods being equidistantly arranged along the axial direction of third smashing shaft, every installation rod is connected with scraping plate, and the scraping plate is attached to the inner wall of smashing cylinder.This device solves the problem that solid lubricant accumulates at the bottom of the smashing barrel, the cutter has difficulty in fully contacting the solid lubricant, leading to insufficient crushing and uneven particle size. It achieves the effect of using a multi-stage crushing method, pre-smashing the solid lubricant first, then further crushing and sieving, to ensure uniform particle size of the finished product.

The invention discloses an efficient lithium battery negative electrode dry slurry mixing process, and relates to the technical field of lithium ion batteries. The preparation method at least comprises the following steps: adding a Fe3O4 / C-Si graphene composite material, a thickening agent and a conductive agent into a slurry mixing tank, and stirring and dispersing for the first time to obtain mixed dry powder; adding deionized water into the mixed dry powder at least twice, and stirring and dispersing for the second time to obtain pre-mixed slurry; adding a binder and an anti-cracking agent into the pre-mixed slurry, and stirring and dispersing for the third time to obtain uniformly mixed negative electrode slurry; and sieving and discharging the negative electrode slurry. According to the invention, the Fe3O4 / C-Si graphene composite material is selected as a negative electrode active material, so that the electrical property of the lithium battery is improved, and the production efficiency is effectively improved in cooperation with a dry slurry mixing process provided by the invention.

The invention relates to the technical field of protein polypeptide extraction, and discloses a method for improving the extraction rate of protein polypeptide from sheep embryo muscle, which comprises the following steps: step 1, preparing raw materials; step 2, crushing; step 3, superfine grinding; step 4, filtering and extracting; step 5, preparing a hydrolysate; step 6, mixing and adjusting; and 7, drying and collecting. According to the method capable of improving the extraction rate of the protein polypeptide from the sheep embryo muscle, a sheep embryo raw material is cleaned for multiple times, coarse sheep embryo frozen powder is extracted and then subjected to superfine grinding, and hydrolysate prepared from the fine sheep embryo frozen powder is mixed with a cleaning solution; meanwhile, centrifugal filtration is performed before the sheep embryo stock solution is obtained, and suspension liquid is removed, so that more protein polypeptides are extracted under the condition of reducing protein loss to the maximum extent, the efficiency and purity of the protein polypeptides extracted from the sheep embryo muscle raw material are ensured, the benefits of the preparation method are increased, and the loss of the raw material is reduced.

The utility model discloses a ball mill lining structure which comprises a first lining plate and a second lining plate, the first lining plate and the second lining plate are alternately mounted on the inner wall of a ball mill, a mounting plate is fixed to the first lining plate, an activation lining plate is detachably mounted on the mounting plate, a through groove is formed in the activation lining plate, and a sieve plate is mounted in the through groove; a baffle is fixed to the second inner lining plate, the multiple activation lining plates and the multiple baffles on the same plane jointly form a material blocking ring, a fixing plate is fixed to one side of the mounting plate, a mounting groove is formed in the fixing plate, and one side of each activation lining plate is located in the mounting groove. According to the utility model, the mounting plate is fixed on the lining plate, so that a complete lining is formed in the ball mill, meanwhile, the activation lining plate can be independently detached, a detaching space is reserved through the baffle, maintenance and replacement are facilitated, and the sieve plate is mounted on the activation lining plate, so that the screening efficiency is further improved, and the ball mill is more uniform in discharging and finer in fineness.

The application relates to a degradable polyester fiber layered sound-absorbing board and a preparation method thereof, and belongs to the technical field of sound-absorbing boards; a photosensitive chain extender is prepared, the photosensitive chain extender can participate in ester exchange reaction of polyester fiber synthesis to modify the polyester fiber, and the melt strength of the polyester fiber after melting is improved. The probability of dripping or even breaking of the polyester fiber melt in the spinning process is reduced, and the stretching resonance problem of the polyester fiber melt due to external tension fluctuation in the stretching process is avoided. The modified polyester fiber can be spun into fiber with lower fineness and more uniform thickness, and the sound-absorbing board prepared by using the modified polyester fiber can increase the specific surface area and flow resistance of the board, so that the sound-absorbing efficiency of the sound-absorbing board is improved.

The present invention belongs to the technical field of sodium ion batteries, and specifically relates to a sodium ion battery hard carbon negative electrode slurry and its use in vehicles; the sodium ion battery hard carbon negative electrode slurry includes: an active material, a conductive agent, a thickener, an adhesive, a binder, a dispersant and a solvent; the specific preparation method includes: first preparing a thickener solution and a dispersed powder, then stirring and dispersing the thickener solution and the dispersed powder to obtain a high-viscosity stirred slurry, and adjusting the slurry viscosity to obtain an adjusted slurry, adding an adhesive to the adjusted slurry and stirring and dispersing to obtain a low-viscosity slurry, and finally vacuum treating to obtain a sodium ion battery hard carbon negative electrode slurry. The sodium ion battery hard carbon negative electrode slurry prepared by the present invention has a lower fineness, and the conductivity of the prepared pole piece has a higher conductivity.

The application discloses a novel early-strength water agent for sprayed concrete and a preparation method thereof, and belongs to the technical field of concrete synergist of building materials, and comprises the following raw materials in mass fractions: 6-9 parts of attapulgite, 0.6-1.8 parts of mineral powder, 0.3-0.9 parts of silicon powder, 0.1-0.3 parts of fly ash, 0.5-0.9 parts of sodium silicate, 0.1-0.3 parts of acrylic acid substance, 1-2 parts of water-based ethylene bis-stearamide emulsion, 3-5 parts of heavy calcium stone powder and 4-6 parts of water. The novel early-strength water agent for sprayed concrete and the preparation method thereof can effectively reduce the rebound rate of sprayed concrete in tunnel construction and have better strength than conventional products, and have a good engineering application foundation; meanwhile, the early-strength water agent has a low mixing amount, can save engineering cost, can reduce environmental pollution and has remarkable social and economic benefits.