8results about How to "Change adsorption" patented technology

The invention discloses high-temperature large-temperature-difference early-strength low-density well cementation cement slurry and a preparation method thereof, and relates to the technical field of oil and gas well cementation. The well cementation cement slurry comprises the following components in parts by mass: 100 parts of oil well cement; 15-35 parts of a high-temperature strength stabilizer; 10-30 parts of a lightening agent; 0.2 to 0.6 part of an early strength agent; 0.3 to 0.7 part of a high-temperature suspension stabilizer; 1-5 parts of a high-temperature fluid loss agent; 0.3 to 0.7 part of a high-temperature retarder; and 50-70 parts of water. The problems that in the prior art, large-temperature-difference low-density cement paste is poor in rheological property, too large in water loss, poor in high-temperature stability, slow in strength development and the like are solved, safe well cementation construction of a long-sealing-section easy-leakage stratum is achieved, and therefore efficient and safe exploitation of deep stratum oil and gas resources is guaranteed.

This invention relates to the field of medical blood purification equipment technology, and discloses a lipid adsorption material regeneration device, including a main body, a rotary switching module, an adsorption column module, a dynamic pressure balancing system, a fluid pipeline system, and a main controller. The rotary switching module drives the adsorption column module to switch between three stations: treatment, regeneration, and balancing preparation. The adsorption column module is filled with pH-responsive hydrogel material to achieve adsorption and regeneration functions. The dynamic pressure balancing system forms a magnetic circuit through a magnetic piston and electromagnetic drive components in a bypass pipe, which senses and adjusts the pressure inside the column in real time. The fluid pipeline system controls the connection of input and output connectors via an electric push rod to achieve fluid switching. The main controller integrates data from multiple sensors, including pressure, pH, and optical sensors, to intelligently terminate the regeneration process. This invention achieves in-situ online regeneration of the adsorption material, continuous uninterrupted treatment, and precise closed-loop control, improving treatment efficiency and safety, and significantly reducing consumable costs.

The invention provides a high-color-yield paste printing color paste mixing process, and belongs to the technical field of color pastes.The paste mixing process comprises the following steps that S1, 70-75 parts by weight of organic interpenetrating modified sodium alginate hydrogel, 10-15 parts by weight of sodium chloride, 0.5-1 part by weight of preservative and 0.5-1 part by weight of penetrant are dissolved in 100-120 parts by weight of water, and a paste aqueous solution is obtained; s2, dissolving 3 parts of a cationic dye in 10-15 parts of water, then adding 0.5-1 part of a modified adsorbent, and uniformly stirring to obtain a dye aqueous solution; and S3, pulping and homogenizing the paste aqueous solution obtained in S1 and the dye aqueous solution obtained in S2 to obtain the paste printing paste with high color yield. According to the invention, the size mixing process is simple, and the color yield is high.

The invention discloses a preparation method of carbon nanofiber loaded platinum-based nanoparticles, which comprises the following steps: 1, heating N, N-dimethylformamide, adding polyacrylonitrile, and stirring to form a solution; 2, adding chloroplatinic acid hexahydrate, nickel nitrate hexahydrate and triphenylphosphine into the solution, and stirring to obtain a precursor solution; 3, performing electrostatic spinning on the precursor solution to obtain a fibrous precursor; 4, freeze-drying the fibrous precursor; and 5, carrying out pyrolysis reduction on the freeze-dried fibrous precursor. The carbon nanofiber loaded platinum-based nano-particles are prepared by adopting a method of combining electrostatic spinning with high-temperature pyrolysis, the carrier with high specific surface area and rich pore structures is obtained, the interaction between the carrier and the platinum-based alloy nano-particles is enhanced, rich catalytic active sites are generated, and the catalytic activity of the platinum-based alloy nano-particles is improved. The oxygen reduction reaction electrocatalytic activity and stability of the PtNi-coated PNCF are improved, and the PtNi-coated PNCF is suitable for being used as an oxygen reduction reaction electrocatalyst of a fuel cell.

The invention relates to a pill dropping machine with a controllable pill dropping forming effect and a pill dropping preparation method. The pill dropping machine comprises a storage tank, a drip irrigation system, a cooling tank and a control system, the drip irrigation system comprises a water dropper, a plurality of nozzles are arranged below the water dropper, a surface tension adjusting system is arranged on the outer wall of each nozzle in a surrounding mode, when the adjusting amount of each surface tension adjusting system is zero, the bottom end of each surface tension adjusting system is flush with the bottom end of the corresponding nozzle, and each surface tension adjusting system is used for adjusting the maximum outer diameter, making contact with a pill dropping agent, of the corresponding nozzle. The cooling tank is provided with a visual system, the visual system is used for capturing an image of the dripping pill and analyzing the diameter of the dripping pill, and the control system is used for controlling the adjusting amount of the surface tension adjusting system according to the diameter.

The invention provides a wave-absorbing film material with an electrostatic adsorption function and a preparation method thereof, and belongs to the field of functional film materials. The wave-absorbing film material with the electrostatic adsorption function comprises a PVC (Polyvinyl Chloride) film and PP (Polypropylene) films compounded on two sides of the PVC film, wherein the PVC film is prepared from the following raw materials: an electromagnetic wave absorbent, PVC resin granules and an auxiliary agent; the electromagnetic wave absorbent comprises a carbon material type electromagnetic wave absorbent; the auxiliaries comprise a stabilizer and a plasticizer; the preparation raw materials of the PP film comprise PP resin pellets, a filler and an auxiliary agent. The auxiliaries comprise a toughening agent and a lubricating agent. The PVC film and the PP film with the wave-absorbing function are compounded and molded through a co-extrusion technology, and then the composite film is subjected to corona treatment to prepare the wave-absorbing film material with the electrostatic adsorption function, and the wave-absorbing film material has good insulativity, excellent electrostatic adsorption capacity, relatively high surface energy and excellent wave-absorbing performance; and the requirements of different use environments can be met.

The application relates to the technical field of explosion suppression agents, in particular to a novel inorganic porous explosion suppression material and a preparation method thereof. The steps comprise the following: placing dried molecular sieves in a metal salt solution with the same volume as the water absorption amount of the molecular sieves, placing the molecular sieves in a constant-temperature oscillator for impregnation, then drying the molecular sieves in a blast drying oven for 12 hours, and then placing the molecular sieves in a muffle furnace for calcination for 5 hours, so that the molecular sieve powder modified by different metal ions is prepared. The prepared inorganic porous explosion suppression material has the advantages of being economic and efficient, low in cost, non-toxic and harmless, and applicable to industrial production, and can be applied to the field of methane explosion suppression.

This invention provides a NiO x A method for preparing a Ni(OH)₂ / NF supported palladium nanoparticle catalyst includes the following steps: Nickel foam (NF) is sequentially placed in hydrochloric acid solution, acetone solution, and deionized water, ultrasonicated, and dried to obtain pretreated NF; Nickel nitrate hexahydrate and hexamethylenetetramine are dissolved in deionized water, ultrasonicated until a homogeneous solution is formed, poured into a high-pressure reactor, and the pretreated NF is vertically immersed into the homogeneous solution, sealed, and subjected to a hydrothermal reaction. After removal, it is washed and dried to obtain a Ni(OH)₂ / NF intermediate with an ultrathin array of nickel hydroxide nanosheets; The obtained Ni(OH)₂ / NF intermediate is placed in a tube furnace and sintered under nitrogen conditions to obtain NiO with a porous array of nickel oxide nanosheets. x / NF precursor. The obtained NiO x The / NF precursor was placed in a palladium salt solution and reacted at a constant temperature. After removal, it was washed and dried to finally obtain NiO. x / NF supported palladium nanoparticle catalyst. This application also discloses a NiO x / NF supported palladium nanoparticle catalyst and its electrocatalytic method for PET plastics.