49results about How to "Avoid Agglomeration and Precipitation" patented technology

The invention provides a preparation method of a superfine crystal inoculating agent for aluminum alloy grain refinement and relates to aluminum-based alloy and is a method for preparing nano-crystalline Al-Ti-B-Re thin-strip intermediate alloy by a rapid solidification technology of metal, wherein the method comprises steps as follows: proportioning 5-5.4% of Ti, 1-1.04% of B, 1-1.2% of Ce, 0.05-0.2% of La and the balance of Al according to determined ingredients; weighing raw materials Al-5Ti-1B intermediate alloy and lanthanum cerium alloy to proportion the materials; melting in vacuum to obtain blocky Al-5Ti-1B-1Re intermediate alloy; carrying out rapid solidification to obtain the superfine crystal inoculating agent for the aluminum alloy grain refinement, wherein the superfine crystal inoculating agent is the nano-crystalline Al-5Ti-1B-1Re intermediate alloy. With the adoption of the method provided by the invention, adverse impact of needlelike TiAl3 on the matrix structure is eliminated, nucleating particles TiAl3 with thinner size and more dispersed distribution are obtained, and superfine nucleating particles are realized.

The invention discloses lead-free glass powder, lead-free glass powder slurry, a large-area dye-sensitized solar cell as well as a preparation method and application thereof. The lead-free glass powder comprises the following components: 10-20% of SiO2, 5-15% of B2O3, 40-70% of Bi2O3, 1-10% of ZnO, 1-10% of Al2O3, 0.5-5% of Na2O, 1-5% of BaO and 2-7% of CaO. The lead-free glass powder slurry comprises the following components: 70-80% of the lead-free glass powder, 15-25% of an organic carrier and 1-5% of additives. According to the formed dense glass corrosion-resistant protective layer, the corrosion resistance of a conductive silver grid can be improved; and moreover, due to the glass powder around the FTO conductive glass, a photo-anode and a counter electrode are sealed, and by virtue of a whole face printing manner, the quantity of holes is reduced, the packaging technology is simplified, leakage of electrolyte can be slowed down, and the service life of the cell is prolonged.

The invention relates to a jellyfish and water chestnut drink and a preparation method thereof, wherein the preparation method comprises the following steps: selecting fresh or alum jellyfishes whichare soaked with clean water as raw materials, freezing and then smashing to prepare slurry; adding the jellyfishes slurry into soft water, adjusting the protein concentration to 2-5 percent and the pHvalue to 7.5-8.5, controlling the temperature, adding trypsinase with the consumption of 1, 000-4, 000l/g of substrate protein, preserving heat for 3-5 hours, and carrying out zymohydrolysis, enzymekilling and centrifugalization to obtain a jellyfish polypeptide liquid; selecting high quality water chestnuts to prepare water chestnut original juice; and weighing the following components in percentage by weight: 50-60 percent of jellyfish polypeptide liquid, 30-40 percent of water chestnut original juice, 6-7 percent of sweetening agent, 0.1-0.4 percent of complex stabilizer, 0.05-0.1 percentof emulsifier and the balance of water, uniformly mixing, homogenizing, filling and sterilizing to obtain a finished product. The jellyfish and water chestnut drink has unique flavor, rich nutrition,good taste, rapid nutritive absorption and health efficacy of eliminating phlegm, lowering blood pressure and the like. The preparation method has reasonable process and strong operability, and is suitable for industrial production.

The invention discloses waterborne drawing paint and a preparation method thereof. The waterborne drawing paint is prepared from, by weight, 40-45% of tinting pigment paste, 15-20% of acrylic resin, 15-20% of talcum powder, 1-2% of waterborne butyl ether amino resin, 1-2% of epoxy phosphate resin, 2-3% of butyl ether, 2-3% of waterborne zinc stearate, 0.1-0.2% of defoamer, 0.2-0.4% of dispersant,0.5-1% of wetting agent, 0.2-0.3% of flatting agent, 3-5% of neutralizing agent, 0.5-0.7% of thickener and the balance deionized water. With the help of cooperative use of various assistants, pigmentsare wet and dispersed, pigment particles have good stability and compatibility, and the overall performance of the paint is greatly improved; the obtained product has the characteristic of being morestable, the surface tension and the wettability of the paint are better than those of waterborne paint, the characteristics of being good in weather fastness, aging resistance and adhesive force areachieved, and harm and pollution caused by organic solvent volatilization in the production and application processes are further greatly reduced.

The invention discloses a method for separating copper proteome by using copper-chelated magnetic beads, and relates to the technical field of protein chemistry. The method comprises the following steps: taking a biological tissue or cell, after fully grinding with liquid nitrogen, adding protein extracting liquid, and after uniformly mixing, carrying out low-temperature centrifugation, so as to obtain a denatured protein solution; mixing the copper-chelated magnetic beads with the denatured protein solution, and incubating to obtain a magnetic bead protein mixed solution; adding a buffer solution 1 with the volume 1 time of that of the magnetic bead protein mixed solution into the magnetic bead protein mixed solution for suspension, pouring half of the supernate under the external magnetic field, and repeating for 4-5 times to obtain a mixed solution A; adding a buffer solution 2 with the volume 1 time of that of the mixed solution A into the mixed solution A, separating all the specific copper-binding proteins, namely, the copper proteome, and collecting the copper proteome under the external magnetic field. According to the method, the metalloproteome is separated under a denaturing condition by using magnetic bead-IDA, so that the procedures are greatly simplified, and the obtaining efficiency of metalloproteins is improved; a method suitable for separating the metalloproteome from the tissue or cell under the excess heavy metal treatment condition is established.

The invention relates to nanometer magnetic lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oils. According to the present invention, superparamagnetic Fe3O4 nanoparticles are prepared by using ferric chloride hexahydrate is used as a raw material and using ethylene glycol as a reducing agent, and the surface of the superparamagnetic Fe3O4 nanoparticles is coated with an amorphous carbon layer by using glucose as a carbon source, such that the aggregation precipitation of magnetic particles is prevented, magnetic particles can have extremelygood dispersion property and extremely good stability in base oil, and the effectively dispersion and recycling in lubricating oil and ethanol can be achieved; the prepared lubricating oil has magnetic property and fluidity under the non-uniform magnetic field effect, can accurately fill the lubricating surface to achieve continuous lubricating, and can counteract the effects of gravity and centripetal force, is not easily leaked, and can prevent external pollution during the lubricating; and the nanometer magnetic lubricating oil cannot precipitate after long-term placing, can prolong the service life of lubricating oil, can be widely used for mechanical lubrication, and further has advantages of energy saving, consumption reducing and wide application prospect.

The invention relates to an organic coating, in particular to a two-dimensional nano-hybrid composite anticorrosive coating filler as well as a preparation method and application thereof. The two-dimensional flaky nano anticorrosive filler is a two-dimensional nano material which is subjected to hybridization and functionalization treatment on a graphene-based nano sheet/g-C3N4 nano sheet; wherein the weight ratio of the graphene-based nanosheet to the g-C3N4 nano sheet is (1: 0.1)-(1: 10). In order to improve the distribution performance of the two-dimensional nano-hybrid material and prevent agglomeration of the two-dimensional nano-hybrid material, the two-dimensional nano-hybrid material is subjected to functionalization treatment by using alkoxy silane or a conductive polymer before a polymer matrix is added, and the functionalized two-dimensional nano-hybrid material with low mass percent is added into a polymer coating through a solution mixing method. Two-dimensional nano-hybridization enables different flaky nano-materials to exert respective advantages in the same coating system, abandons the defects of the flaky nano-materials and prevents the flaky nano-materials from being agglomerated in the coating.

The invention belongs to the technical field of ceramic powder preparation and high-temperature ceramic coating surface modification process and discloses a preparation method of manganese-cobalt oxide powder.The method includes: taking a mixture of polyvinyl alcohol, ethylene glycol and adipic acid as a chelating agent and taking cobalt chloride and manganese chloride crystals as raw materials to promote chemical reaction and colloid reaction of cobalt chloride and manganese chloride under certain process conditions to form a MnxCo3-xO4 phase, stabilizing to form a MnxCo3-xO4 precursor, and sintering to form MnxCo3-xO4 powder with a stable structure.The preparation method of the manganese-cobalt oxide powder has the advantages that technical simplicity is achieved, the prepared MnxCo3-xO4 is stable, and MnxCo3-xO4 powder different in manganese-cobalt proportion can be obtained by control of the proportion of the cobalt chloride and the manganese chloride.

The invention relates to the technical field of leather making chemistry and engineering, and provides a coating and decoration method for solving crust leather cross color. Oxidized polyethlene wax emulsion is introduced into a coating and decoration agent, and the coating and decoration agent is used for coating the surface of crust leather to show a natural fog luster state; during high-temperature ironing, the wax agent migrates to the surface layer of a coating film along with the moisture volatilization; a waxed surface layer is formed with other ingredients in the coating and decoration agent; a good shielding effect is achieved; the crust leather with the uniform and consistent surface color is obtained; meanwhile, the dispersion degree of the pigment paste in the coating and decoration agent can be increased through the oxidized polyethlene wax emulsion; the coloring intensity is improved. By using the coating and decoration method for solving crust leather cross color, a crust leather product with the advantages of uniform particle surface color, comfortable hand feeling, exquisite surface and aniline coating and decoration effects can be obtained; in addition, the operability is very high; the production efficiency is high; the crust leather accumulation is avoided; the economic loss is reduced; the practicability is high.

The invention relates to a preparation method of a natural fiber graphene composite material. The preparation method comprises the following steps that S1, natural fiber yarns enter a pretreatment tank containing a pretreatment solution for padding, and the pretreatment solution comprises the following components of, in percentage by mass, 2%-20% of biological enzyme, 0.5%-5% of sodium carbonate,1%-10% of sodium hydroxide, 0.5%-2% of leveling agent peregal, 1%-5% of penetrant JFC and the balance of deionized water; S2, the padded and baked natural fiber yarns are enabled to enter an ultrasonic tank containing the graphene solution for pad dyeing, and the graphene solution comprises the following components of, in percentage by mass, 3%-6% of a graphene material, 20%-40% of waterborne polyurethane, 1%-5% of a leveling agent peregal, 0.5%-1% of a penetrating agent JFC and the balance of deionized water; and S3, after the pad-dyed natural fiber yarns are pre-dried, steaming and color fixing are carried out. The preparation method of the natural fiber graphene composite material has the advantages of high production efficiency, high binding strength of graphene and natural fibers, anduniform distribution of graphene.

The invention discloses a polishing solution polishing particle circularly extracting device which comprises a box body as well as a polishing solution storage device, a polishing solution ultrasonicatomization device, a polishing solution drying device, a polishing particle and airflow mixing device, and a polishing particle separating device all arranged in the box body, wherein a polishing solution stirring device is arranged in the polishing solution storage device; and polishing waste solution is collected and stirred in the polishing solution storage device, is atomized in the polishingsolution ultrasonic atomization device, enters the polishing solution drying device to be dried, then enters the polishing particle and airflow mixing device, and finally enters the polishing particle separating device, so that separation of particles with different masses is realized according to different gravity ranges of different particles. The polishing solution polishing particle circularly extracting device can recycle the polishing solution after polishing treatment to greatly lower the economic cost of the polishing process and increase the green manufacturing degree of the polishing process.

The invention relates to the technical field of landfill leachate treatment, and in particular, relates to a descaling agent for a leachate anaerobic system and a preparation method of the descaling agent, wherein the descaling agent comprises the following raw materials in parts by weight: 5-15 parts of hydrochloric acid, 1-5 parts of citric acid, 1-6 parts of EDTA, 0.4-3.5 parts of amino trimethylene phosphonic acid, 0.5-3.5 parts of a corrosion inhibitor, 0.3-0.6 part of sodium dodecyl sulfate, 0.9-1.8 parts of sodium hexametaphosphate and 45-180 parts of water. The hydrochloric acid, the citric acid, the EDTA and the amino trimethylene phosphonic acid are used in cooperation, cleaning of a pipe network and the interior of a UASB pool can be accelerated, removal of water scales is facilitated, the descaling time is shortened, and the descaling rate is effectively increased; by using the corrosion inhibitor formed by combining hydroxyethylidene-1,1-diphosphonic acid and polymaleic acid, the corrosion of the acidic descaling agent to the surface of equipment in the descaling process is effectively prevented; and by using a dispersing agent formed by combining sodium dodecyl sulfate and sodium hexametaphosphate, the water scales after stripping can be effectively prevented from being agglomerated and precipitated, so that the water scales after stripping is prevented from blocking the pipe network, and potential safety hazards are avoided.

The invention relates to an effervescent milk-containing beverage and a preparation method thereof. Wherein every 1000 parts by weight of the effervescent milk-containing beverage comprises 3.0-37.5 parts by weight of skim milk powder and 2.0-4.0 parts by weight of soluble soybean polysaccharide, and the aeration amount of carbon dioxide is 1.5-5.0 volume times; and the content of milk protein in the effervescent milk-containing beverage is 0.5-1.2 wt%. The effervescent milk-containing beverage disclosed by the invention has high milk protein content, is filled with high-volume-multiple carbon dioxide, and has the advantages of being rich in nutrition and having the unique flavor and taste of a carbonated beverage.

The invention belongs to the field of microalgae culture, and discloses multimode microalgae culture equipment. The multimode microalgae culture equipment comprises an outer box assembly and a plurality of culture units, wherein the outer box assembly comprises an outer box, an air pump, fluorescent tubes and a plurality of sample bottles, and the culture units are in one-to-one correspondence tothe sample bottles; each culture unit comprises culture tanks and pressure densimeters; the air pump is used for pumping air into the outer box from outside; the fluorescent tubes are arranged in theouter box; the sample bottles are arranged outside the outer box; each culture tank is provided with a microalgae injection port and a culture medium injection port; and each pressure densimeter is provided with two pressure detection pieces located at different heights, and is used for detecting the real-time density of a microalgae solution through the real-time pressure difference detected by the two pressure detection pieces. Therefore, culture of the microalgae in three manners by the equipment can be completed, and data acquisition is performed, and subsequent sample contrast and analysis are performed.