133results about How to "Avoid reaction" patented technology

The application discloses a double-hearth two-stage heating vacuum distillation furnace, which comprises an evaporation furnace and a condensation furnace which are communicated through a gas passage, wherein the evaporation furnace comprises an evaporation furnace body and at least one top heating mechanism which is detachably arranged on the top of the evaporation furnace body; and the condensation furnace comprises a condensation furnace body, a side heating structure and a furnace cover, wherein the condensation furnace body is divided into a temperature control condensation chamber and a plurality of layers of multistage condensation chambers, and the gas passage can be combined or replaced according to the required reaction conditions of different materials. The vacuum distillation furnace can collect different metals through the gradient change of the temperature of the two hearths, reduces the process of secondary distillation of volatile matters after the furnace is stopped, can complete the processing of diversified raw materials, improves the work efficiency and reduces the processing cost; the modular top heating mode directly radiates heat to the materials, improves the heat utilization rate, can realize the working mode of stopping the furnace without stopping the work, helps to improve the work efficiency, and is convenient for completing the furnace cleaning, maintenance and solid material taking and placing.

The application discloses a controllable breathing machine atomization processing circuit, which comprises a main control module, a display module, a carbon dioxide concentration detection module, a pressure detection module, a judgment module, an atomization output control module and an oscillation driving module; wherein the main control module is connected with the display module, the judgment module, the carbon dioxide concentration detection module and the pressure detection module respectively; the display module, the carbon dioxide concentration detection module and the pressure detection module are connected with the judgment module respectively; the judgment module is connected with the atomization output control module; and the atomization output control module is connected with the oscillation driving module. Through the cooperation of the main control module, the carbon dioxide detection module and the pressure detection module, the breathing frequency data of a patient can be accurately collected and fed back in real time; and through the atomization output control module and the input oscillation driving module, the vibration frequency of the atomization screen is regulated and controlled, so that the atomization screen can better adapt to the breathing frequency of the patient.

The application discloses a method for preparing cell-derived exosomes and products and applications thereof, and the method comprises the following steps: co-culturing immune-activated programmable cells with a stimulating agent with immune-activation effect, and collecting the cell-derived exosomes with immune activity by a natural secretion collection method or an artificial extrusion collection method. The application has safe and controllable local immune activation, and the immune activation strategy based on the exosomes fully overcomes the safety bottleneck of traditional live bacterial preparations in tumor treatment. By replacing live bacteria with engineered exosomes, not only potential risks such as systemic inflammatory response and infection are effectively avoided, but also the local controllability of immune stimulation signals is ensured, the precise activation and directional regulation of tumor region immune cells are realized, the tumor microenvironment is reshaped, the anti-tumor effect is strengthened, and the broad-spectrum cross-tumor potential is verified across models.

The utility model discloses an ammonium nitrate solution concentration blending reation kettle with anti -explosion function belongs to reation kettle equipment technical field, the utility model discloses a reation kettle body is communicated with the discharge valve at reation kettle body bottom, can carry out even heating to solution through the electric heating plate in the reation kettle body inner wall bottom groove, avoid local temperature too high and cause ammonium nitrate to decompose gas and cause explosion, the cooperation design of stirring rod and top motor can carry out sufficient stirring to ammonium nitrate solution in reation kettle, make solution concentration distribution even. The annular ring and the explosion -proof pipe fixedly connected with the annular ring that reation kettle body surface sets up up and down, effectively enhanced the overall structural strength of reation kettle, the gas outlet pipe of top annular ring and the gas inlet pipe of bottom annular ring mutually cooperate, and the outside cold gas enters the space between the explosion -proof pipe and reation kettle body, and then even cooling is carried out to reation kettle body, and then gas is discharged to the outside from the gas outlet pipe, and the device has the advantages that the explosion -proof effect is good.

This invention belongs to the field of glass technology and relates to a high-temperature resistant structural glass material, its preparation method, and its applications. The glass is composed of the following components by mass percentage: 60%-70% silicon dioxide, 5.5%-11% boric acid, 0.1%-5% aluminum hydroxide, 0%-3% potassium nitrate, 5.5%-13% potassium carbonate, 0%-12% sodium carbonate, 0.1%-4% calcium carbonate, 0%-2% calcium fluoride, 0%-1% lithium carbonate, 0%-2% basic magnesium carbonate, 0.1%-1% titanium dioxide, 0%-2% zirconium dioxide, and 0%-1% cerium dioxide; the total mass percentage of potassium nitrate, potassium carbonate, sodium carbonate, and lithium carbonate does not exceed 22%. This structural glass possesses a high softening temperature, a suitable coefficient of thermal expansion, high-temperature resistance, thermal shock resistance, and processing performance, making it suitable as a structural material for optoelectronic devices.

This invention provides a method for recovering and utilizing distillation residue after solvent removal from homohydric anhydride, relating to the field of fine chemical technology. The method includes anhydride treatment, vaporization and sublimation, dissolution and recrystallization, distillation, and water washing. In this invention, the distillation residue is anhydride-treated under high temperature and negative pressure, followed by vaporization and sublimation under vacuum to separate mechanical impurities and high-boiling substances. Then, through dissolution and recrystallization, the difference in solubility between homohydric anhydride and metahydric anhydride in polar solvents is utilized to preferentially crystallize out the homohydric anhydride. The mother liquor is distilled to remove the solvent, and then colored impurities are removed by hot water washing and activated carbon adsorption. Finally, it is cooled and crystallized to obtain trimellitic acid. The homohydric anhydride obtained by this invention has a purity ≥95% and a yield of 84-89%, and the trimellitic acid has a purity ≥97% and a yield of 81-86%. This method achieves effective recovery of high-value-added components from distillation residue, demonstrating significant economic and environmental benefits and promising application prospects.

The application discloses a PCB oxidation-preventing treatment device, and relates to the oxidation-preventing treatment field of pretreatment plates, which comprises a main frame body, a spraying box body is arranged on the upper surface of the main frame body, and a micro-etching mechanism is arranged on the upper surface of the main frame body. The micro-etching mechanism comprises a cleaning assembly and a soaking assembly. The cleaning assembly comprises a sliding table body, the sliding table body is arranged on the upper surface of the main frame body, one side surface of the sliding table body is further provided with a sliding groove, one side of the inside of the sliding groove is provided with a bottom protruding block, and the inside of the sliding groove is provided with a limiting sleeve block. The soaking assembly comprises a vertical sliding rail, the bottom surface of the vertical sliding rail is connected with one side surface of a liquid pool bottom plate, and the inside of the vertical sliding rail is provided with an internal hydraulic rod. In the scheme, the micro-etching mechanism can efficiently remove the oxidation layer and pollutants of the pretreatment plate, provide a clean surface, and can also realize operations such as vibration liquid removal, liquid filtration and purification, and concentrated liquid recycling, so that the treatment effect and resource utilization rate are improved.

The utility model discloses safe storage equipment for refined glycerol, which relates to the technical field of refined glycerol storage, solves the technical problem of lack of heat preservation and flow slowing structures in the prior art, and comprises a main tank body and a tank body cover, a material injection structure is mounted on the tank body cover, and a material discharge structure is mounted at the lower end of the main tank body. An isolation flow slowing structure is fixedly installed in the main tank body, a low-temperature maintaining structure is fixedly installed outside the main tank body, through the isolation flow slowing structure, fluid inertia impact caused by vehicle braking or starting in the transportation process can be effectively reduced, and the risk of the tank body is reduced; in the filling and discharging processes, accidental combustion of the refined glycerol is prevented through a slow flow design; the low-temperature maintaining structure adopts a refrigerating machine compression refrigerating technology, and a low-temperature environment is maintained through spiral winding of a cooling pipe, an outer shell and a multi-layer heat preservation design, so that spontaneous combustion or chemical reaction caused by temperature rise in the transportation or storage process is prevented, and the quality and storage safety of glycerol are guaranteed.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

This invention relates to the field of battery technology, and more particularly to a positive electrode lithium replenisher, its preparation method, a positive electrode sheet, and a lithium battery. The aforementioned positive electrode lithium replenisher includes a core and a shell, with the shell covering the surface of the core to isolate the core from the side reaction environment. The core is a lithium-rich material, specifically at least one of Li5FeO4, Li5ReO6, and Li6CoO4. The shell is cobalt boride. This core-shell structured positive electrode lithium replenisher with cobalt boride as the shell effectively coats the core material, improves the air stability of the positive electrode lithium replenisher, reduces residual alkali, and thus enhances the battery's energy density and cycle performance.

The invention relates to the technical field of submerged arc furnaces, and discloses a large energy-saving direct-current submerged arc furnace which comprises a bottom plate and a fixing frame arranged on the bottom plate. According to the large energy-saving direct-current submerged arc furnace, the particle size of ore is controlled through extrusion and crushing, materials are automatically stricken by a strickling plate, a conical rod rotates and guides, the particle size is screened according to intervals, and ferromagnetic impurities are removed through a magnetic attraction belt; the electrode and furnace lining loss is reduced; inert gas is introduced into an airflow plate of a heating furnace to strengthen stirring of a molten pool and promote full contact of effective components and a fluxing agent, a full-direct-current framework is adopted to eliminate alternating loss, a double-inverse-star-shaped non-in-phase inverse parallel topology is matched, and mutual counteraction of current and a magnetic field is utilized, so that the material with the particle size exceeding the standard is obtained. Copper pipe hysteresis and eddy current loss are reduced, the operating temperature is controlled, the topological multi-pulse rectification optimizes the current waveform, the reactive power is reduced, and a high-capacity reactive power compensation device is omitted; and meanwhile, the length of the short net is shortened, the conductor section is optimized, an additional heat dissipation pipeline is not needed, and energy consumption and investment are reduced.

The application belongs to the technical field of semiconductor lasers, and particularly relates to a non-damage semiconductor laser cavity surface preparation method. The method comprises the following steps: positioning a crystal direction of a semiconductor wafer to obtain a most easily dissociated surface of the semiconductor wafer; etching a dissociation guide groove parallel to the most easily dissociated surface, and performing a circular arc transition treatment on the corners of a ridge-shaped protection area of the dissociation guide groove during the etching process; and using the dissociation guide groove to make the semiconductor wafer naturally dissociate through a scribing process and a breaking process to obtain a smooth semiconductor laser cavity surface. The application provides two technical solutions of circular arc transitions at turning points of the dissociation guide groove, can obtain a smooth, flat, non-damage and high-quality semiconductor laser cavity surface, can avoid a reaction between gallium nitride and other semiconductor materials and water vapor, oxygen and other gases in the air after the cavity surface film is plated, improves the service life of the gallium nitride and other semiconductor lasers, and can obtain a reliable and stable semiconductor laser.

This utility model discloses a mixing agitator for a hydrogenation reactor, comprising a reactor body, multiple legs fixedly connected to the outer wall of the bottom of the reactor body, a top cover rotatably connected to the top of the reactor body, a feed pipe fixedly connected to the top of the top cover, a feed cover plate rotatably connected to the top of the feed pipe, a discharge pipe fixedly connected to the bottom of the reactor body, a discharge valve fixedly connected to the outer wall of the discharge pipe, a stirring mechanism installed on the inner wall of the reactor body, an aeration treatment mechanism installed on the top of the reactor body, and a foam elimination mechanism installed inside the reactor body. The air pump of this utility model's aeration treatment mechanism introduces hydrogen gas into the rotating shaft through the air inlet pipe, and sprays it out from the aeration pipe through the air guide hose. This, combined with the motor driving the rotating shaft and stirring rod of the stirring mechanism, causes the hydrogen gas to disperse into tiny bubbles. Simultaneously, a scraper removes material from the reactor wall, avoiding dead zones and improving the uniformity of the gas-liquid-solid three-phase mixing. The mass transfer coefficient is improved compared to traditional agitators.

The utility model discloses a kind of even feeding devices for phosphorus pentachloride production, it is related to phosphorus pentachloride production technical field, including base, the top of base both ends is fixedly connected with U-shaped support seat, the top of base one end is fixedly connected with L-shaped support plate, both ends The top of U-shaped support seat is fixedly connected with heat-insulating jacket device, the inner side wall top of heat-insulating jacket device is fixedly connected with storage bin between, the bottom output end of storage bin is fixedly connected with electric valve, the other end of electric valve is fixedly connected with buffer tank, the base provided in the utility model, on the basis of realizing heat preservation protection to avoid affecting even feeding, increase inert gas protection to avoid causing metamorphosis simultaneously, to solve the temperature of the existing phosphorus pentachloride production feeding device is difficult to control due to lack of effective heat preservation structure, and lack of inert gas protection causes security and metamorphosis problem.

This utility model relates to a slit-type film-forming mechanism, including a rotatably arranged coating roller. The mechanism is characterized by: an extrusion die with an inclined arrangement on one side of the coating roller; an extrusion head at the lower end of the extrusion die; a discharge slit at the extrusion head; a material cavity communicating with the basic slit within the extrusion die; an injection hole at the higher end of the extrusion die communicating with the material cavity; a coating gap formed between the discharge slit and the coating roller; and an adjustment mechanism for driving the extrusion die to move toward or away from the coating roller, facilitating adjustment of the gap between the doctor blade roller and the coating roller.

The invention relates to the technical field of probiotics, in particular to intestinal tract source pediococcus acidilactici of Yanqu county in Tibet and fat reducing application thereof. The pediococcus acidilactici disclosed by the invention is preserved in the China General Microbiological Culture Collection Center on April 29, 2025, and the preservation number is CGMCC NO.34406; the strain has the characteristics of acid resistance, cholate resistance and stress resistance, and has high survival rate and planting efficiency; the strain is free of hemolysis, free of toxic factors and high in safety; the strain can secrete short-chain fatty acid and antibacterial peptide, inhibit pathogenic bacteria and promote intestinal barrier repair; short-chain fatty acid generated by metabolism of most of carbon water by the strain can be directly absorbed by intestinal epithelial cells, and can be used as an energy substance to replace partial glucose demand, so that the metabolism energy consumption is reduced, the energy conversion rate of feed is improved, the feed conversion is promoted, and the effects of reducing fat and weight and improving the non-alcoholic fatty liver disease are achieved.

The utility model discloses a raw material melting reaction device for sodium silicate preparation, and relates to the technical field of sodium silicate preparation. The device comprises a base table, a stirring mechanism and a heating mechanism are arranged on the base table, the stirring mechanism comprises a roller assembly and a plurality of mixing assemblies, the roller assembly comprises two first supports fixedly connected to the top of the base table, a roller is arranged above the base table, and the two first supports are fixedly connected to the top of the base table. And the right side of the left bracket I is rotationally connected with a rotating shaft I. According to the raw material melting reaction device for preparing the sodium silicate, through the arrangement of the stirring mechanism, the problems that in the use process of an existing raw material melting reaction device for preparing the sodium silicate, sodium silicate raw materials which are subjected to a raw material melting reaction in the device are inconvenient to stir, so that the raw materials in the device are heated unevenly, and the reaction time is shortened are solved. The problems of unnecessary waste, increase of production cost and reduction of product quality caused by unnecessary reaction or incomplete reaction in the prior art are solved in the prior art.

This invention discloses a warm isostatic pressing (WIP) densification process for solid-state batteries. This invention relates to the field of solid-state battery manufacturing technology and aims to solve the problem of uneven stress and cracking of thin electrolyte membranes caused by existing isostatic pressing processes. The method involves aligning and bonding the negative electrode sheet with a solid electrolyte membrane containing a substrate, followed by cold isostatic pressing pre-pressing. The substrate is then removed, and the positive electrode sheet is bonded to complete cell assembly. The cell is placed in a perforated fixture and a flexible sheath, vacuum-sealed, and then sent into the warm isostatic pressing chamber. A pressure-transmitting medium is injected, and the temperature is programmed to reach the target process temperature, followed by pressurization to the target process pressure. Based on the material system of the solid electrolyte membrane, pressure and temperature are maintained at the corresponding temperature and pressure. Controllable pressure release is performed at a rate slower than the pressurization rate, while simultaneously cooling to below the set temperature. This method improves the manufacturing yield, interface densification, and consistency of the cell through step-by-step pre-pressing and programmed temperature and pressure control.

The present application relates to a kind of biological gamma-butyrolactone and its production method, the production method of biological gamma-butyrolactone of the present application includes the following steps: preparation biological succinic acid solution;The obtained biological succinic acid solution and hydrogen continuously enter the fixed bed containing nickel copper catalyst and carry out hydrogenation reaction, obtain crude product;The obtained crude product enters separation column and is separated and purified, obtain biological gamma-butyrolactone;Nickel loading in the nickel copper catalyst is 30wt%~60wt%, copper loading is 1wt%~5wt%, the content of hydrophobic compound is 0.01wt%~0.2wt%.The present application is prepared by 5wt%~30wt% biological 1,4-butanedioic acid dilute solution continuously into fixed bed hydrogenation reactor, and biological gamma-butyrolactone liquid is prepared, continuously enters rectification separation column and is separated, and biological gamma-butyrolactone product with purity ≥99.99% can be prepared, and the rest is impurity;The impurity includes tetrahydrofuran and 1,4-butanediol;The content of tetrahydrofuran is ≤0.004%;The content of 1,4-butanediol is ≤0.005%.

The present application relates to a kind of phosphonic acid-benzenesulfonic acid double modified carbon microspheres and its preparation method and application, belong to oil field chemical field.The method includes: S1 with biomass as raw material preparation original carbon microspheres;S2 original carbon microspheres are pre-oxidized and activated, obtain activated carbon microspheres;S3 activated carbon microspheres are phosphonated grafting reaction;S4 last perform sulfonic group grafting reaction.The present application also provides the phosphonic acid-benzenesulfonic acid double modified carbon microspheres prepared by this method, and the application of the phosphonic acid-benzenesulfonic acid double modified carbon microspheres in the preparation of water-based drilling fluid.In this phosphonic acid-benzenesulfonic acid double modified carbon microspheres, phosphonic acid group and benzenesulfonic acid group are introduced into the surface of carbon microspheres by stable covalent interaction, not easy to fall off in high temperature and high salt environment, can improve the stability of material in high temperature condition, to ensure that modified carbon microspheres in downhole complex working condition Long-term effect, make drilling fluid system can simultaneously withstand high temperature and high calcium ion double test.

The utility model discloses a deposition device, including the reaction chamber, the reaction chamber has the reaction cavity in, the reaction chamber upper portion is provided with the feed port for the single atom from top to bottom to enter the reaction cavity, the reaction chamber upper still is provided with the gas inlet and the gas outlet for the gas to go in and out, be provided with the deposition chamber for the single atom and powder mix in the reaction cavity, the deposition chamber is provided with the stirring mechanism for making the single atom with powder can mix even, the utility model discloses setting stirring mechanism continuously turns over the powder in the deposition chamber, the contact surface of dynamic adjustment powder and single atom / cluster particle, effectively solved the powder easy to conglomeration in the prior art, the low problem of coating efficiency, quality stability difference caused by uneven contact, ensure that powder surface evenly coats single atom / cluster, promote material performance consistency, the structure detachable design has strengthened the operation convenience and environmental adaptability.

The utility model provides a novel waterproof breathable adhesive tape, which relates to the technical field of breathable adhesive tapes and comprises a super-hydrophobic non-woven fabric layer, a permanent adhesive layer arranged below the super-hydrophobic non-woven fabric layer, a PU (polyurethane) film layer arranged below the permanent adhesive layer, an isolation ring arranged below the PU film layer and a medical pressure-sensitive adhesive layer arranged in the isolation ring. The skin-friendly non-woven fabric layer is arranged below the medical pressure-sensitive adhesive layer, a plurality of evenly distributed small holes are formed in the skin-friendly non-woven fabric layer and penetrate through the skin-friendly non-woven fabric layer, viscose on the medical pressure-sensitive adhesive layer is not prone to adhering to the skin, skin irritation and anaphylaxis caused by residual viscose on the skin are avoided, no glue is left on the skin, and the skin-friendly non-woven fabric layer has the advantages that the skin-friendly non-woven fabric layer is not prone to damage. The use comfort is improved, and meanwhile, the skin health is also protected.

This invention belongs to the field of metal rust prevention technology, specifically relating to an environmentally friendly water-based rust-preventive composition, its preparation method, and its application. The composition comprises, by weight, 3-8 parts of a first triazine compound, 1-5 parts of a second triazine compound, 10-20 parts of 2-amino-2-methyl-1,3-propanediol, 2-5 parts of dipropylene glycol monomethyl ether, and 65-85 parts of water. The first triazine compound is a triazine compound having substituents containing hydrophobic segments and at least two aminocarboxylic acid substituents, and the second triazine compound is a triazine compound having thiol substituents. This invention forms a dual-anchored protective film on the metal surface through the two triazine compounds, exhibiting excellent salt spray resistance, damp heat resistance, and film density. It achieves a salt spray test duration of 72 hours, a damp heat test duration of 960 hours, and an adhesion rating of 0. Furthermore, it is free of nitrites, phosphates, and heavy metals. The preparation method is simple, suitable for industrial production, and can be widely applied to metal rust prevention in machinery manufacturing, automotive parts, and other fields.

The utility model relates to the technical field of lithium battery positive electrode materials, and discloses a pretreatment sagger and sintering equipment. The lithium layer is arranged at the bottom of the sagger body and is suitable for preventing lithium from being absorbed by the sagger body in the sintering process; the lithium layer is composed of one of lithium carbonate, lithium hydroxide or lithium oxide and is fixed to the bottom of the sagger body. The sintering equipment comprises a sintering furnace; the saggar bearing frame is arranged in the sintering furnace and used for fixing and arranging the multiple pretreatment saggars. The gas circulation system is used for introducing inert gas or reducing gas into the furnace in the sintering process so as to prevent lithium from being oxidized. The lithium layer can reduce direct contact between the sagger body and lithium, so that corrosion and abrasion of the sagger are reduced, and the service life of the sagger is prolonged.

This invention discloses a coal gangue grouting and filling material with high rheological resistance and resistant to bleeding, its preparation method, and its application, relating to the field of mine filling material technology. The grouting and filling material, by mass percentage, comprises: 70%~75% coal gangue, 0.55%~2.3% composite rheology modifier, and the balance being water; wherein the composite rheology modifier includes an air-entraining agent and a dispersant, with a mass ratio of (90~99):(1~10); the air-entraining agent is a surface-active foaming material, and the dispersant is a phosphate additive. In its preparation, coal gangue is first mixed with water and stirred to obtain an initial slurry; then the air-entraining agent and dispersant are mixed to prepare the composite rheology modifier; finally, the composite rheology modifier is added to the initial slurry and stirred until homogeneous to obtain the grouting and filling material. This grouting and filling material uses coal gangue as the main raw material, has a simple preparation process, and possesses excellent fluidity, stability, and pumpability.

This invention discloses a casting process for high-strength ductile iron, relating to the technical field of cast iron materials and casting processes. The process includes the following steps: S1, preparing a sand mold, and sequentially forming a sulfur-blocking layer, a diffusion-regulating layer, and a slow-release post-inoculation layer on the surface of the mold cavity to obtain a mold with a gradient reaction coating; S2, melting the base iron, and subjecting the base iron to spheroidization treatment and a primary inoculation treatment to obtain spheroidized iron to be poured; S3, pouring the spheroidized iron to be poured into the mold with the gradient reaction coating, allowing the slow-release post-inoculation layer to contact the spheroidized iron to be poured and release interfacial inoculation active particles; the surface coating of the mold is designed as a gradient structure of a sulfur-blocking layer, a diffusion-regulating layer, and a slow-release post-inoculation layer, so that sulfur blocking, diffusion blocking, and interfacial post-inoculation are spatially partitioned and temporally coordinated, avoiding premature reaction and inoculation failure caused by simple mixing of sulfur-blocking powder and inoculator.

The invention discloses Ti-based alloy powder, which is prepared from the nominal components in percentage by atom: (5 to 10) of Ti, (2 to 5) of Al, (1 to 3) of V, (0.5 to 2.0) of Y2O3 and the balance of Ti and inevitable impurities, the preparation method comprises the following steps: 1, weighing raw material powder; 2, charging and sealing; 3, ball milling; and 4, discharging to obtain Ti-based alloy powder. According to the Ti-based alloy powder disclosed by the invention, high-volume nano Y2O3 is introduced and uniformly dispersed in a Ti matrix to form a dispersion strengthening phase, so that the room-temperature and high-temperature strength, creep resistance and thermal stability of the alloy are improved; according to the mechanical alloying process, the ball-to-material ratio, the rotating speed and the time of ball milling are strictly controlled, intermittent ball milling and external cooling are adopted to control temperature rise and pollution, it is guaranteed that Y2O3 forms nanocrystalline and a dispersion strengthening phase in a Ti matrix, the strength, hardness and thermal stability of the alloy are improved, the process is controllable, and repeatability is good.

The utility model is suitable for the technical field of spheroidizing agent smelting, and provides spheroidizing agent smelting equipment which comprises a shell, a barrel assembly is arranged at the top of the shell, a liquid injection assembly is arranged at the top of the barrel assembly, and a stirring assembly is installed at the bottom of the barrel assembly. The liquid injection assembly comprises an iron liquid injection port for injecting iron liquid and a nodulizing agent injection port for injecting a nodulizing agent; the cylinder assembly comprises a cylinder, a spheroidizing agent diffusion module is arranged at the top of the cylinder and comprises an annular pipeline, a square hole is formed in the annular pipeline, the spheroidizing agent injection port is formed in the square hole, a plurality of sets of longitudinal pipelines are arranged at the bottom of the annular pipeline in a surrounding mode, the longitudinal pipelines are attached to the cylinder, and the longitudinal pipelines are connected with the cylinder. And a plurality of groups of discharge holes are formed in each group of longitudinal pipelines. The device solves the problem of non-uniform smelting reaction of the spheroidizing agent, and achieves the effects of uniform distribution and uniform reaction of the spheroidizing agent through the spheroidizing agent diffusion module and the stirring assembly.

The invention provides a phosphate-modified epoxy polyaniline heavy anti-corrosion coating and a preparation method thereof. The coating is prepared from the following components in percentage by mass: 10-40% of phosphate-modified epoxy resin, 10-40% of phosphate-modified epoxy resin, 10-40% of phosphate-modified epoxy resin, 10-40% of phosphate-modified epoxy resin, 5%-30% of polyaniline pre-dispersed slurry; 5%-15% of filler; 10%-30% of a pigment; 0.2%-1.5% of a silane coupling agent; 0.1%-3.0% of an auxiliary agent; 8%-20% of a curing agent; the balance is a solvent; wherein the phosphate modified epoxy resin is obtained by carrying out graft modification on epoxy resin through phosphate; the polyaniline pre-dispersed slurry takes epoxy resin as a carrier, and is sanded to obtain a stable dispersion. The coating is suitable for severe environments such as high temperature and high humidity, the preparation process is simple and convenient, the film-forming property is good, the adhesive force is high, and the coating has compact double passivation layers and is excellent in damp-heat resistance, salt mist resistance and medium resistance.

This invention belongs to the field of chemical synthesis and polymer material additives technology, specifically relating to a synthesis process of 2,2,4-trimethyl-1,3-pentanediol dibenzoate. It includes the following steps: Step (1) Step-by-step esterification reaction: 2,2,4-trimethyl-1,3-pentanediol is mixed with benzoic acid, a composite catalyst is added, and a step-by-step esterification dehydration reaction is carried out under heating conditions to obtain a crude ester reaction solution; Step (2) Neutralization and washing; Step (3) Light removal and viscosity reduction / flow-promoting molecular distillation purification: An anti-yellowing agent is added to the organic phase after washing in step (2), and light removal is carried out under reduced pressure at 100–130℃ and 1000–5000 Pa absolute pressure to remove the water-carrying agent and water; subsequently, the crude product is continuously pumped into a scraped-film molecular distillation apparatus for high-vacuum purification, controlling the evaporator heating surface temperature at 150–200℃ and the system absolute vacuum at 10–200 Pa. This invention provides a synthesis and purification process for TMPD dibenzoate with high diester content and low hue.