9results about How to "Process steps are clear" patented technology

The application discloses an environmentally-friendly soft type yoga mat special silk-screen printing ink and a preparation method thereof, and belongs to the technical field of silk-screen printing inks. The ink comprises the following components in parts by weight: 30-50 parts of main body resin, 5-15 parts of environmentally-friendly pigment, 25-45 parts of environmentally-friendly composite solvent, 1-5 parts of adhesion promoter, 0.5-2 parts of rheological additive, 0.5-2 parts of scratch-resistant additive, and 2-8 parts of environmentally-friendly non-ortho phenyl plasticizer. The ink is extremely environmentally-friendly, meets international export standards, and is free of phthalate plasticizers, benzophenone solvents and heavy metal pigments in the whole process. Instead, the ink uses citric acid ester non-ortho phenyl plasticizers, benzene-free and ketone-free composite solvents and heavy metal-free organic pigments. The VOC content is far lower than the national limit value, the irritating odor is eliminated, and phthalate controlled substances are not detected. The ink meets the EU REACH regulation appendix XVII 51 / 52 and the EN71-3 toy safety standard, and completely solves the problem of limited export of traditional inks.

The application discloses a kind of for sewage treatment ultra-efficient shallow air floaters and processing technology, its ultra-efficient shallow air floater includes pool body, cloth liquid unit, mounting bracket and drive unit, pool body inserts with sewage pipe and inlet pipe, sewage pipe is connected with sewage pipe, inlet pipe is connected with Venturi jet and is connected with its water inlet, the air pipe and the dissolved air water pipe are connected with the air inlet and the water outlet of Venturi jet respectively;Cloth liquid unit includes mixing pipe and cloth liquid pipe, mixing pipe is connected with sewage pipe, dissolved air water pipe, cloth liquid pipe is connected on mixing pipe, mounting bracket is arranged on sewage pipe, and mounting bracket is provided with scraper;Drive unit drives mounting bracket to rotate;Pool body is equipped with scum cylinder, scum cylinder is equipped with scum box, the height of front side box wall of scum box is greater than rear side box wall, mounting bracket is equipped with bending assembly for bending scraper, and the scraper after bending restores original shape after passing through low side box wall of scum box.The ultra-efficient shallow air floater provided by the application can improve the efficiency of the scraper to remove scum.

This invention provides a silver-based terminal coating with high migration resistance, relating to the field of terminal coating preparation technology. The coating, from the inside out, comprises a copper alloy substrate, a nickel underlayer, a composite silver layer, and a gold protective layer. The nickel underlayer is formed by electroplating with a nickel plating solution containing nickel sulfamate, nickel chloride, and boric acid. Through the synergistic effect of nanoparticle surface modification treatment, pulse co-deposition process, and interface optimization technology, the nanoparticles are uniformly dispersed in the composite silver layer and form a stable bond with the coating. Combined with the protective system formed by the dual-pulse gold plating process, the migration path of silver ions is blocked from the source, ensuring that the terminal has no short-circuit risk under long-term use and harsh environments, and significantly improving the product's service life and reliability.

The invention relates to the technical field of mineral extraction, particularly discloses a method for efficiently extracting barite single mineral in black mudstone rich in organic matters, and solves the technical problems that micron-sized barite in black mudstone cannot be efficiently extracted in the prior art, lattice destruction / isotope fractionation of barite is easily caused in the extraction process, the purity and the recovery rate are low and the like. The purity of the extracted barite single mineral is larger than or equal to 99%, the recovery rate of fine-fraction barite is larger than or equal to 90%, crystal lattices are complete and free of damage, isotope fractionation and component change are avoided, and the high-precision geochemical test requirement can be met; meanwhile, the method is suitable for various sedimentary rocks such as marine / continental black mudstone, shale and siliceous mudstone, and the applicability is wide.

This invention discloses a reconstituted tobacco leaf with the appearance of tobacco fibers and its preparation method. The reconstituted tobacco leaf comprises the following components by weight: 20-40 parts tobacco stems, 30-50 parts added fibers, 40-50 parts tobacco powder, and 0.4-2 parts colloid. The preparation method involves precise weighing of raw materials, separate pulping of tobacco stems, mixed pulping of tobacco powder and added fibers, compounding of multiple pulps, followed by pulping, dehydration, coating, drying, and rolling to obtain the finished product. The reconstituted tobacco leaf exhibits a clear appearance of natural tobacco fibers on its surface. The raw material ratio is highly adaptable, and the parameters of each step of the preparation process are highly controllable. It effectively preserves the original appearance and structure of tobacco fibers, giving the product both excellent physical properties and sensory quality. Furthermore, the process flow is adapted to the needs of industrial production, significantly improving the added value and market application value of paper-based reconstituted tobacco leaves.

This invention relates to the field of industrial wastewater treatment technology, and specifically discloses a method for the synergistic treatment of wastewater containing hexavalent chromium and alkaline slag wastewater. It includes: 1. Injecting the hexavalent chromium-containing wastewater into a reaction vessel and stirring; slowly adding the alkaline slag wastewater in small amounts multiple times through a pipeline extending to the bottom of the solution, controlling the addition time to 1 minute each time with 5-minute intervals, ensuring that the hexavalent chromium content in the mixed solution is below 0.5 mg / L; 2. Adding ferric chloride solution during the reaction to maintain the pH at 2-3; after the reaction is complete, adjusting the pH to 8-9 with the alkaline slag wastewater; 3. After cooling, adding PAC solution in proportion; after the reaction, pressing and filtering; incinerating or landfilling the filter cake; and desalinizing the filtrate; 4. Desalinizing through triple-effect evaporation; rigidly landfilling the waste salt; and biochemically treating the condensate. This invention achieves "waste-to-waste treatment," reduces treatment costs, inhibits hydrogen sulfide spillage to ensure safety, achieves treatment standards, has a simple process that is easy to industrialize and promote, and possesses good environmental and social benefits.

The application provides a solute cluster reinforced aluminum alloy material and a preparation method and application thereof, and belongs to the technical field of aluminum alloy materials. The solute cluster reinforced aluminum alloy material comprises an aluminum matrix and nanometer clusters uniformly and dispersedly distributed in the aluminum matrix. The average size of the nanometer clusters is less than or equal to 5nm, the number density of the nanometer clusters is greater than or equal to 3.27*10 25 m ‑3 ; and the solute cluster reinforced aluminum alloy material is an Al-Zn-Mg-Cu alloy.

This invention provides a method for preparing LaBi(00l) single-crystal thin films using molecular beam epitaxy (MBE), belonging to the field of thin film preparation technology. The method involves heating a lanthanum (La) and bismuth (Bi) evaporation source to a certain temperature, then co-depositing the La and Bi molecular beams onto a Si(001) substrate heated to a certain temperature, thereby forming a LaBi thin film. Subsequently, the film is annealed while keeping the Bi evaporation source on, and then cooled to room temperature. The LaBi(00l) single-crystal thin film prepared by this method exhibits a [00l] orientation. The method provided by this invention offers controllable processes and good repeatability, providing an effective approach for preparing high-quality LaBi thin films.

The application provides a kind of anti-freezing high-performance concrete for building 3D printing and a preparation method thereof, the concrete contains cement 80-100 parts by mass, fly ash 80-100 parts, slag powder 220-270 parts, silica fume 15-30 parts, fine aggregate 1200-1500 parts, and polycarboxylic acid high-performance water reducing agent, thickening agent, polypropylene fiber and / or modified cellulose ether, water-binder ratio 0.55~0.67, fine aggregate is natural sand, granite waste sand or mixture thereof, replacement rate 0%~100%. During preparation, accurate measurement, dry mixing, solution preparation, wet mixing fluidization, high-speed slurry, printing forming and moisture curing are carried out. The application adopts microstructure self-optimization active anti-freezing design, without coarse aggregate, which greatly reduces carbon emission, the anti-freezing grade of concrete reaches F125-F150, with excellent printability and mechanical properties, without printing head blockage problem, the preparation process is controllable, and is suitable for building 3D printing engineering in cold and seasonal freeze-thaw areas.