19results about How to "Diffusion is fast" patented technology

The invention belongs to the technical field of lithium battery positive electrode materials, and provides a method for improving the performance of lithium iron phosphate through secondary calcination of iron phosphate, and the method comprises the following steps: S1, mixing iron phosphate with a dispersant to obtain a mixture; s2, the mixture is sequentially subjected to pulping, filter pressing, drying and calcination, and a first precursor is obtained; s3, sequentially mixing, filtering and drying the first precursor and a perfluorosulfonic polymer solution to obtain a second precursor; and S4, sequentially mixing, grinding and sintering the second precursor and a lithium source to obtain the lithium iron phosphate. The compaction density of the lithium iron phosphate is larger than 2.6 g / cm < 3 >, the sphericity degree is larger than or equal to 0.8, the average particle size range is 300-500 nm, the first charge gram capacity is 160-165 mAh / g, the energy density is 110-115 mWh / g, and the rate performance 1C discharge ratio is larger than 93%.

The utility model discloses a sample storage assembly and a digestive system department sample collection device, and relates to the technical field of medical instruments, the technical key points are that the sample storage assembly comprises a storage cabinet and two supporting legs fixedly arranged on the bottom surface of the storage cabinet, and a disinfection mechanism is arranged in the storage cabinet; the storage cabinet has the technical effects that the interior of the storage cabinet can be disinfected through the disinfection mechanism, and during disinfection, air can be heated and discharged into the storage cabinet by arranging an exhaust fan, a heater, a connecting pipe, a connecting box and an air outlet pipe, so that the interior of the storage cabinet can be disinfected at a high temperature; according to the storage cabinet, the interior of the storage cabinet can be thoroughly sterilized through the ultraviolet lamp, air entering the storage cabinet can be filtered through the filter screen cover, large dust and impurities in the air are prevented from entering the storage cabinet, and hot air exhausted by the air outlet pipe can be guided through the air guide plate.

The invention relates to the technical field of semen freezing, in particular to animal semen freezing equipment which comprises a cambered surface supporting mounting frame, an annular loading mounting cylinder and a liquid nitrogen storage tank and further comprises a movable buffering loading mechanism, an animal semen combined loading freezing mechanism and a passive temperature control mechanism. The movable buffer loading mechanism comprises movable mounting plates which are symmetrically arranged at the bottom of the cambered surface supporting mounting frame; the device can be stably moved to an animal semen collection area, so that the semen collection space distance is reduced, the damage of ice crystal oscillation to sperms in the transportation process is avoided, and the device can be used for freezing multiple groups of animal semen in batches; the heat exchange area of the animal semen can be increased through the conical surface structure, the freezing speed is remarkably increased, and the freezing quality of the animal semen is further improved; the animal semen cryopreservation device can automatically freeze and preserve animal semen at low temperature, greatly reduces the internal temperature in the early freezing stage, and is high in liquid nitrogen diffusion speed, low in nitrogen consumption, simple to operate, low in maintenance cost and suitable for large-scale popularization and application.

The invention belongs to the technical field of secondary batteries, and particularly relates to a detection adhesive tape as well as a preparation method and application thereof. The detection adhesive tape provided by the invention comprises a substrate and a color developing part, and the color developing part is arranged on at least part of the surface of one side of the substrate; wherein the color developing part is prepared from the following components in percentage by mass based on the total mass of the color developing part: 0 to 65 percent of a first matrix, 20 to 92 percent of a second matrix, 0.02 to 0.8 percent of a color developing agent and 1 to 30 percent of water. According to the invention, the detection adhesive tape can be tightly attached to a to-be-detected position, and is suitable for liquid leakage detection of various types of batteries; by limiting the water content of the color developing part, a small amount of water in the color developing part can react with lithium salt (such as lithium hexafluorophosphate) in the electrolyte to generate hydrogen fluoride and phosphoric acid, both the two acids can provide a large amount of H < + >, the reaction with the structure of a color developing agent molecule is accelerated, and the color developing sensitivity of the color developing part is improved.

The present application relates to a kind of flame-retardant anti-shrinkage PBAT / bamboo powder supercritical foaming material and its preparation method, belong to degradable foaming material technical field.To solve the problem that PBAT system introduces bamboo powder and flame retardant causes foaming material cell structure uneven, density uneven, mechanical property drops, the present application provides a kind of flame-retardant anti-shrinkage PBAT / bamboo powder supercritical foaming material, component includes PBAT, bamboo powder and flame retardant, melt extrusion granulation after being placed in airtight container, fills in supercritical gas and is foamed to be prepared.The present application improves the anti-shrinkage and flame-retardant performance of PBAT foaming material by the addition of bamboo powder and flame retardant;By optimizing the injection amount of supercritical gas, foaming temperature and pressure, reduce foaming instability, effectively offset the adverse effects of bamboo powder and flame retardant on cell growth, obtain uniform cell structure and density, further improve the mechanical property of material.

The application discloses a kind of fibrous felt that can be all-weather fast recovery high viscosity crude oil, preparation method and its application.The fibrous felt includes the fibrous substrate formed by profiled cross-section fiber, and the binder layer, functional layer and hydrophobic coating sequentially loaded on its surface;Functional layer is used to generate Joule heat when energized and generate photo-thermal effect under light;The water contact angle of fibrous felt is greater than 140°.The application also provides its preparation method and application.The application integrates photo-thermal and Joule heat effect in the same felt, realizes all-weather operation ability;Use C-shaped or Y-shaped profiled cross-section fiber, accelerate the penetration and absorption of high viscosity crude oil;Through the synergistic effect of polypyrrole layer and MXene layer, the resistance is significantly reduced and the oil absorption time is shortened.The fibrous felt of the application has simple preparation process, and is suitable for all-weather oil spill recovery in complex environment such as ocean oil spill.

The utility model belongs to the field of cleaning equipment, and particularly relates to a hydrogen-containing membrane cleaning device which comprises a cleaning water tank, a hydrogen generator, a gas-water mixing pump, a pressure tank and a reverse osmosis membrane group, the cleaning water tank and the hydrogen generator are connected with the gas-water mixing pump through pipelines, and a water outlet of the gas-water mixing pump is connected with the pressure tank through a pipeline. The pressure tank is connected with the reverse osmosis membrane group through a pipeline, the other end of the reverse osmosis membrane group is connected with the cleaning water tank through a pipeline, the top of the cleaning water tank is provided with a cover plate through a shell dismounting structure, the bottom of the cover plate is fixedly provided with a plurality of connecting rods, and the bottoms of the connecting rods are fixedly provided with positioning plates; and the bottom of the positioning plate is provided with a filtering assembly through a detachable structure. The device is reasonable in design, hydrogen and water are mixed and can enter the cleaned reverse osmosis membrane for circulation, the reverse osmosis membrane group is convenient to clean, and the filter component is convenient to disassemble, assemble, clean or replace.

The invention provides a preparation method of high wet strength and high water absorbency wet curtain paper. The wet papermaking process is adopted to uniformly disperse mixed fibers such as plant fibers, water-soluble synthetic PVA bonding fibers and two-component composite fibers in an oil-water medium, and the mixed fibers are piled into a fiber web in a certain proportion. Then, a thermal bonding process is combined to make the wet curtain paper have higher dry and wet strength and wet stiffness performance, and the wet curtain paper does not deform when immersed in water and has a long service life. A suitable antibacterial and mildew-proof agent is appropriately added to the fiber web to make the wet curtain paper have excellent antibacterial and mildew-proof functions.

The invention discloses a coking crude benzene catalytic hydrofining method, which belongs to the technical field of crude benzene hydrofining, and comprises the following steps: preparing a catalyst carrier; preparing a catalyst impregnation liquid; preparing a catalytic hydrogenation catalyst; performing catalytic hydrofining; and separating the components. The rectorite and the pollen are combined by adopting a high-temperature co-carbonization technology to form the modified carbonized pollen with a hierarchical porous structure, so that the adsorbability, the thermal stability and the catalytic performance are remarkably enhanced. According to the hollow-structure catalyst nanoparticles prepared through the Kirkendall effect, active sites are increased, internal diffusion of reactants and products is promoted, and the catalytic efficiency is effectively improved. Meanwhile, the chelation of the ionic liquid and the synergistic effect of the oxygen-containing functional group realize the effective load of the catalyst carrier and the catalyst body, enhance the stability and service life of the catalyst, enhance the catalysis and desulfurization performance of the catalyst, and provide a new way for realizing efficient and environment-friendly chemical production.

The embodiments of the present disclosure disclose a nozzle and a micro-mixing tube manufacturing method suitable for a pure hydrogen gas turbine. A specific implementation of the nozzle includes: a first panel, a second panel, a side panel, at least one fuel pipe and at least one micro-mixing tube, wherein the micro-mixing tube includes a micro-mixing tube body and at least one fuel hole, the diameter of the micro-mixing tube body is 3 to 5 mm, and each fuel hole is arranged on the side of the corresponding micro-mixing tube body. The first panel, the second panel and the side panel form a fuel cavity, and each fuel pipe is arranged on the first panel, and the outlet end of each fuel pipe is connected to the fuel cavity; the inlet end of each micro-mixing tube is arranged on the first panel, which is in the fuel cavity, and at least one air inlet hole is arranged on the first panel; at least one mixed fuel outlet hole is arranged on the second panel, and each micro-mixing tube outlet end corresponds to a mixed fuel outlet hole. This implementation can reduce the risk of flashback and the emission of nitrogen oxides.

The invention discloses a sodium-rich polyanion positive electrode material and a preparation method thereof. The structural general formula of the positive electrode material is NazMnTi (1-x-y) MxAy (PO4) 3, z is greater than 3 and less than or equal to 4, x is greater than 0 and less than 1, and y is greater than 0 and less than or equal to 0.33; m is one or more than two of metal elements Al, V, Cr, Mn, Fe, Ni, Cu and Zn, and A is one or more than two of alkali metal or alkaline earth metal elements Li, Na, K, Mg and Ca. The sodium-rich polyanion positive electrode material and the preparation method thereof have the characteristics of excellent rate capability, cycling stability and high gram volume.

According to the composite corrosion inhibitor etching liquid and the preparation method and application thereof, a composite corrosion inhibition system composed of the first corrosion inhibitor and the second corrosion inhibitor is introduced into an acid etching system, and selective removal of a copper seed layer under different etching conditions is achieved; according to the composite corrosion inhibition system, the corrosion defect of the surface of a copper electrode can be remarkably reduced, the surface appearance can be improved, the lateral corrosion depth can be reduced, and meanwhile complete etching of a residual copper seed layer in a non-electrode area is not affected. The two types of nitrogen-containing heterocyclic corrosion inhibitors generate a synergistic adsorption effect on the copper surface by utilizing the molecular structure and adsorption behavior difference to form a compact and stable composite protection layer, so that the synergistic regulation and control on the overall corrosion rate and the local lateral corrosion behavior are realized. The composite corrosion inhibitor etching liquid has the advantages of being good in etching uniformity, remarkable in lateral erosion inhibition effect, wide in process window and suitable for industrial application.

The present invention relates to the field of magnet preparation technology, in particular to a method for preparing a neodymium iron boron magnet, which solves the problem of slow movement of the grain boundary diffusion source during grain boundary diffusion. 14 The problem of abnormal growth of B main phase grains and low coercive force of NdFeB magnets is solved by mixing NdFeB magnetic powder with metal carbide, pressing the mixed magnetic powder to form a green embryo, and forming the green embryo through heat treatment to obtain a sintered NdFeB permanent magnet; coating the sintered NdFeB permanent magnet to form a double-layer diffusion layer, and then performing heat treatment, and then performing a first annealing at a temperature of 675-845°C for 2-3h; and then performing a second annealing at a temperature of 400-500°C for 4-5h to obtain the NdFeB magnet. The present invention can greatly improve the coercive force of the NdFeB magnet and comprehensively improve the performance of the NdFeB magnet.

Provided are a recombinant human hyaluronidase formulation and an application thereof, the recombinant human hyaluronidase formulation comprising: recombinant human hyaluronidase, a buffer, a stabilizer, and a non-ionic surfactant, the stabilizer being selected from one or more of trehalose, sucrose, mannitol, sodium chloride, and methionine, and having the ability to maintain the stability of recombinant human hyaluronidase under 2-8 °C conditions; the hyaluronidase formulation can be applied in the preparation of a drug assisting subcutaneous infusion; same can enable a large volume infusion drug originally only able to be administered intravenously to be administered by means of subcutaneous infusion, and is more convenient, safe, and comfortable in clinical use.

The invention discloses a high-activity nanocellulose water clarifier and a preparation method thereof. The preparation method comprises the following steps: firstly, screening out nano-cellulose which is easy to disperse in an oil-water interface, carrying out etherification modification on the nano-cellulose through an alkyl methyl ester etherifying agent, and researching etherification modification conditions of the alkyl methyl ester etherifying agent, so that the prepared modified nano-cellulose has a relatively strong breaking effect on oil-in-water emulsion; meanwhile, cationic quaternary ammonium salt type side groups are introduced through etherification reaction, so that the modified nanocellulose further obtains strong charge adsorption effect on oil-containing colloid in water, and fine floc is formed to float. The nano cellulose is modified by alkyl methyl ester and quaternization, so that a high-activity nano cellulose water clarifier product can be prepared, and the nano cellulose water clarifier has a wide application prospect in the field of oil-water separation of offshore oilfields.

The application discloses a chemical strengthening process of an ultrathin microcrystalline glass touch screen, which comprises the following steps: S1, cleaning and purifying an ultrathin microcrystalline glass substrate with a thickness of 0.3mm-0.5mm; S2, immersing the purified substrate into a first salt bath for ion exchange pre-strengthening, wherein the first salt bath comprises potassium nitrate, sodium nitrate and lithium nitrate; S3, immersing the pre-strengthened substrate into a second salt bath for ion exchange deep strengthening, wherein the second salt bath is a high-purity potassium nitrate salt bath; S4, placing the deep-strengthened substrate into an environment with a temperature of 300 DEG C-320 DEG C and keeping the temperature constant for 5min-15min, then naturally and slowly cooling to room temperature and cleaning; and S5, heat treating the cleaned substrate to obtain a finished ultrathin microcrystalline glass touch screen. The finished product has a surface layer compressive stress of greater than or equal to 850MPa, an ion exchange layer depth of greater than or equal to 120mu m and a flatness of less than or equal to 0.05mm, and the anti-scratching, anti-impact, anti-bending performance and environmental reliability of the ultrathin touch screen are improved.

The utility model relates to the technical field of carriages, and discloses a wide-body dumper carriage which comprises a carriage body, a bottom plate is fixedly connected to the lower surface of the carriage body, a first air guide opening is formed in the bottom plate, a longitudinal beam is fixedly connected to the lower surface of the bottom plate, and a second air guide opening is formed in the longitudinal beam in a penetrating mode. A supporting beam is fixedly connected to the outer wall of the longitudinal beam, a cross beam is fixedly connected to one side of the outer wall of the longitudinal beam, two third air guiding openings are formed in the cross beam, a side bent beam is fixedly connected to one side of the cross beam, and an air outlet beam is fixedly connected to one end of the cross beam. According to the utility model, through the design of the plurality of longitudinal beams and the connecting cavities, the heating coverage rate of the bottom plate and the transition area is obviously improved, and meanwhile, the connectivity of the cavities is improved through the gas guide ports I, so that tail gas diffusion is more uniform; tail gas does not enter a cavity of the supporting beam, the shock absorber is prevented from being grilled, and the service life is prolonged; the first filter plate and the second filter plate effectively prevent blocking, stable operation of the system is guaranteed, and practicability of the whole carriage is improved.

The present invention relates to the field of micromanipulation technology, and discloses a composite microtube preparation method and a local extracellular environment regulation method, wherein the automatic regulation of the local microenvironment outside the held cell is achieved through the following steps: a micro plastic catheter is drawn out by heating the front end of a universal syringe, and the catheter is sealed through the side opening of a needle holder and penetrated into the front end of a glass microtube to construct an independent dual-gas-path composite glass microtube; a fluorescent substance is added to the environment adjustment solution, and the fluorescence intensity of the glass microtube mouth is fed back in combination with a fluorescence microscope imaging system to adjust the piston injection speed, thereby achieving automatic regulation of the external local environment of the held cell surface. The present invention manufactures a dual-gas-path composite glass microtube, and finally completes the automatic adjustment of the local external environment of the cell by combining the system simulation modeling results and microscopic visual feedback. Experimental results show that the average time for the adjustment process of the local external environment of the cell by this method is only 105s, and the adjustment success rate is 95%.

The invention discloses a multifunctional nanocellulose-based polymer water clarifier and a preparation method thereof. The preparation method comprises the following steps: firstly, screening out nano cellulose which is easily dispersed on an oil-water interface, carrying out etherification modification on the nano cellulose through an alkyl methyl ester etherifying agent and a quaternary ammonium salt type etherifying agent, and introducing alkyl methyl ester and cationic quaternary ammonium salt groups; the prepared modified nanocellulose has a relatively strong breaking effect and a clear water oil removal effect on an oil-in-water emulsion; meanwhile, an oleophylic long-chain cationic polymer side group is introduced through a graft copolymerization reaction, so that the modified nanocellulose further obtains strong charge adsorption and flocculation effects on oil-containing colloid in water, and fine floc floating is formed. Nano cellulose is subjected to etherification modification and graft copolymerization modification, a multifunctional nano cellulose-based polymer water clarifier product with reverse demulsification, water clarification and flocculation effects is prepared, and the multifunctional nano cellulose-based polymer water clarifier has a wide application prospect in the field of oil-water separation of offshore oilfields.