139results about How to "Fully dispersed" patented technology

The invention discloses a desulfurization stirrer, and belongs to the field of chemical equipment. A top cover is arranged at the top of a stirring tank, a discharging pipe is arranged at the bottom, three rotating shafts with stirring rods are inserted into the top cover, and a driving assembly composed of a motor, a driving shaft, a chain wheel and a chain drives the rotating shafts to rotate synchronously. The feeding hopper is inserted into one end of the top cover in a sliding mode, and an ejector rod of the feeding hopper is matched with a protrusion of the rotary disc on the driving shaft, so that the feeding hopper can swing to achieve uniform feeding. An adjusting structure is arranged, and the swing amplitude of the feeding hopper can be controlled through a hand wheel and other components. A stop valve, an organ shield, a controller and other components are further arranged. The stirrer can fully stir materials, is uniform in feeding, is flexible to adjust, is convenient and reliable to operate, and can effectively improve the desulfurization efficiency and quality.

The invention relates to the technical field of raw coal impurity removal, and particularly provides a raw coal impurity removal anti-blocking device. By arranging the feeding primary screening mechanism, coal powder is filtered out through a flow guide plate, and by arranging a first-stage material uniformizing device and a second-stage material uniformizing device, coal can be evenly dispersed, and the phenomenon that the device is blocked due to accumulation of the coal is prevented; the belt type iron removal mechanism is additionally arranged, metal impurities in raw coal are adsorbed through the magnetism of an electromagnet, and the discharging quality of coal is guaranteed; the grate type screening unit is additionally arranged, so that coal briquettes with small sizes can smoothly fall into a stock bin below through gaps between swing rods, and impurities such as stones with large sizes are temporarily intercepted on the swing rods and wait for follow-up rotary throwing treatment of the rotary roller claw type screening unit; and a rotating roller claw type screening unit is arranged, a first gear motor and a cam divider are used for providing power, a claw is intermittently driven to rotate, and large sundries can be thrown into a sundry recycling box.

The invention relates to a polycarboxylate superplasticizer as well as a preparation method and application thereof. Comprising the following steps: mixing and dissolving IPEG and water, heating to a certain temperature, and adding an oxidizing agent to prepare a solution A; mixing a reducing agent and a chain transfer agent, and adding water to prepare a solution B; mixing an unsaturated acid monomer and a phosphate group-containing monomer, and adding water to prepare a solution C; and adding the solution B and the solution C into the solution A, stirring at a constant temperature until the reaction is completed, and cooling to room temperature to obtain the polycarboxylate superplasticizer, thereby completing the reaction. Compared with the prior art, the method has the advantages that the adsorption of the polycarboxylic acid water reducer to the micro powder is reduced, and the dispersion effect of the polycarboxylic acid water reducer is improved, so that the working performance of the high-micro-powder regenerated masonry mortar is improved, and the like.

The invention discloses polyvinyl alcohol / polyethyleneimine conductive hydrogel based on crystal and chain entanglement as well as a preparation method and application of the polyvinyl alcohol / polyethyleneimine conductive hydrogel. Water molecules between polyvinyl alcohol and polyethyleneimine polymer chains are discharged through a circulating freezing-unfreezing method, a high-concentration accumulation area, namely a microcrystal area, in which the polymer chains are in close contact is formed, and rich physical entanglement and hydrogen bond interaction exist between the polyvinyl alcohol and the polyethyleneimine polymer chains. As a main physical crosslinking point, effective energy dissipation is provided, and the hydrogel is endowed with ultrahigh toughness. Besides, by utilizing the HofMichael effect, the inorganic salt solution generates a strong salting-out effect between polymer chains, reconstructs a local disordered structure and forms a stable physical cross-linked network, and compared with the traditional hydrogel, the preparation method is simple, convenient and easy to implement, low in cost and convenient for large-scale mass production. The prepared conductive hydrogel has controllable good mechanical properties and conductivity, and has wide application prospects in the fields of health monitoring, array sensors, wearable devices and the like.

The utility model discloses a stirring type liquid pesticide mixer. Belongs to the technical field of pesticide mixing, and comprises a mixing drum and a mixing assembly arranged in the mixing drum and used for mixing pesticides, the mixing assembly comprises a mounting frame connected to the mixing drum, and a rotating shaft is rotatably connected to the interior of the mounting frame. A second bevel gear can drive a first bevel gear to rotate in the rotating process, at the moment, a rotating shaft connected to the first bevel gear can drive stirring blades to rotate in the forward direction, and meanwhile, the second bevel gear can drive a third bevel gear to rotate in the rotating process, so that a sleeve connected to the third bevel gear drives a first stirring frame to rotate; according to the pesticide liquid mixing device disclosed by the utility model, through the stirring blades which rotate forwards and backwards and the first stirring frame, components in pesticide liquid can be more sufficiently dispersed, and the mixing uniformity is improved.

The invention provides a preparation method of a chopped carbon fiber reinforced ceramic-based crucible material, and relates to the technical field of chopped carbon fiber reinforced ceramic-based crucible materials.The preparation method comprises the following steps that S1, chopped carbon fibers and ceramic matrix powder are subjected to dry mixing according to a preset proportion, and the chopped carbon fibers are preliminarily and evenly distributed in the ceramic matrix powder; s2, the carbon fibers obtained after dry mixing and ceramic matrix powder are mixed through a wet method, ball milling or homogenizing treatment is carried out in a liquid medium, the carbon fibers and the ceramic matrix powder are fully dispersed, and mixed slurry is obtained.According to the preparation method, oxidation treatment or acid pickling treatment or a metal coating technology is carried out on the surfaces of the short carbon fibers; according to the invention, the carbon fibers are added into the ceramic matrix, so that the interface bonding force between the carbon fibers and the ceramic matrix is obviously improved, the carbon fibers are uniformly dispersed in the ceramic matrix, the agglomeration problem of the carbon fibers is avoided, and the mechanical properties, including compressive strength, bending strength and thermal shock resistance, of the material are enhanced.

The invention discloses a multi-angle automatic pesticide spraying device for pest control, relates to the technical field of pesticide spraying devices in agriculture and forestry production, can be widely applied to field crop production, orchard management and forest cultivation processes, and is characterized in that the bottom of a connecting valve is connected with connecting female heads, and the bottoms of the two connecting female heads are connected with connecting male heads through threads; the bottom of the connecting male head is rotatably connected with a rotating pipe, the bottom of the rotating pipe is sequentially connected with a plurality of mounting pipes through a plurality of connecting gooseneck pipes, and one side of each mounting pipe is connected with a pesticide spraying gun. The pesticide liquid in the pesticide storage barrel can be continuously fed into the pesticide storage box to supplement the pesticide liquid, so that the device can continuously operate, manual pesticide spraying is not needed, the labor intensity of workers is reduced, manual inhalation of atomized pesticide is prevented, and the body health of farmers is guaranteed.

The invention relates to a preparation method of a magnesium alloy mu-DIC speckle and a characterization method and application thereof. The preparation method comprises the following steps: 1) carrying out electrolytic polishing on a to-be-detected surface of a magnesium alloy sample until the to-be-detected surface is bright and free of scratches; 2) mixing the SiO2 suspension with alcohol according to a certain volume ratio, and performing ultrasonic dispersion to obtain a diluent; 3) placing the polished sample in a diluent for ultrasonic treatment, and then cleaning the sample with alcohol to obtain uniformly dispersed and distributed speckles; the whole preparation of the speckles is a physical process, the sample is not damaged or the properties of the sample are not changed, and the speckles prepared by the method do not interfere with the collection of other signals on the surface of the sample, so that the practicability of EBSD and DIC results is improved; the preparation method has the advantages of being simple, easy to operate, efficient, ultralow in cost and the like, the magnesium alloy material can be applied under the room temperature, high resolution and large view field, and the bottleneck problems that the magnesium alloy sample speckle preparation difficulty is large, and compatibility of the DIC technology and the EBSD technology cannot be achieved at the same time are solved.

A Karl Fischer reagent production reaction kettle comprises a reaction kettle body, a reaction kettle cover, an isolation cylinder, an isolation cover, a position control supporting rod, a lifting seat, a rotating seat and a limiting sliding rod, the inner side of the reaction kettle body is connected with the isolation cylinder, the isolation cylinder is provided with a lower positioning plate, the lower positioning plate is connected with the reaction kettle body, and the reaction kettle body is provided with a plurality of lower positioning slots. The lower positioning plate is provided with a plurality of lower positioning insertion rods, the lower positioning insertion rods are matched with the lower positioning insertion grooves and connected with the lower positioning insertion grooves, a lower fixing pipe is arranged at the bottom of the reaction kettle body, a discharging pipe is arranged at the bottom of the isolation cylinder and connected with the interior of the lower fixing pipe, and the exterior of the lower fixing pipe is connected with a lower fixing cover through threads. The lower part of the reaction kettle body is connected with fixed support legs, the upper part of the reaction kettle body is connected with a reaction kettle cover, the reaction kettle cover is provided with an upper fixed plate, the reaction kettle body is provided with a lower fixed plate, and the upper fixed plate is connected with the lower fixed plate.

The utility model discloses a combined stirring paddle arranged in a reaction kettle, which comprises a main stirring shaft and an auxiliary stirring shaft which are coaxially arranged, the main stirring shaft and the auxiliary stirring shaft are respectively connected with a main stirring power machine and an auxiliary stirring power machine, a stirring paddle group is arranged on the main stirring shaft, a wall-expanding paddle group is arranged on the auxiliary stirring shaft, and the main stirring shaft and the auxiliary stirring shaft are respectively connected with the main stirring power machine and the auxiliary stirring power machine. The stirring device has the advantages of simple structure, high stirring efficiency and wide application range.

The utility model relates to the technical field of bicycle frames, and discloses a magnesium alloy frame with a damping cavity, which is characterized in that the magnesium alloy frame with the damping cavity comprises a saddle main shaft, two sides of the outer wall of the saddle main shaft are rotatably connected with rotating rods, the other ends of the rotating rods are rotatably connected with rear wheel inclined rods, and the rear wheel inclined rods are connected with the damping cavity. A second connecting block is fixedly connected to the outer wall of the saddle main shaft, a lower sleeve is rotatably connected to the outer wall of the second connecting block, a telescopic sleeve is fixedly connected to the top end of the lower sleeve, a moving rod is slidably connected to the inner wall of the telescopic sleeve, and a first buffering assembly is arranged on the outer wall of the moving rod. According to the shock absorber, the first spring is compressed through the movable rod, the movable rod drives the extrusion plate to extrude the pressed plate, the pressed plate compresses the second spring, and therefore the two-time buffering effect is achieved, and the honeycomb-shaped shock absorption cavity can absorb and disperse shock energy through deformation of the honeycomb-shaped shock absorption cavity, and the shock absorption effect is achieved.

The application provides a preparation process of high-strength concrete, and belongs to the technical field of concrete, and comprises the following steps: step S1, Mg-Al-LDH-NO2 powder is prepared; step S2, microcapsules are prepared; step S3, machine-made sand, granite crushed stone, Portland cement, slag powder, limestone powder, metakaolin, microcapsules, water, a water reducing agent and Mg-Al-LDH-NO2 powder are mixed and stirred to obtain high-strength concrete. The application can achieve the purpose of improving the strength and durability of concrete.

This invention discloses a solid-phase thickening reactor for PETG chips, belonging to the field of polyester chip processing technology. It includes an outer cylinder with an inlet pipe and an outlet pipe installed at its top and bottom, respectively. Support legs are installed on the side of the outer cylinder. Inside the outer cylinder are a supporting cylinder and four movable inner cylinders. Connecting rings connect the supporting cylinder to the movable inner cylinders and between adjacent movable inner cylinders. This invention ensures that each chip can undergo sufficient and uniform heat exchange with the heat medium, eliminating heating "dead zones" and temperature differences in traditional equipment. Based on the synergistic effect of uniform dispersion, controllable feeding, and a three-dimensional thermal field, the raw material can undergo a thickening reaction in the reactor in an optimal state. This ensures the uniformity and thoroughness of the reaction, effectively avoiding quality problems such as chip viscosity differences and yellowing caused by uneven heating or inconsistent reaction times. Therefore, it significantly improves the final product quality, production efficiency, and batch stability of the PETG chips.

The invention discloses a clindamycin phosphate vaginal gel detection method and device, and relates to the technical field of vaginal gel detection. The detection method comprises the following steps: step 1, respectively putting a monopotassium phosphate solution and acetonitrile into two raw material supply tanks, putting clindamycin phosphate vaginal gel to be detected into a preparation tank, and leading the two raw material supply tanks to the preparation tank for adding raw materials; step 2, placing a plurality of preparation tanks on a bottle-changing rotating disc, rotating the bottle-changing rotating disc when the adding amount of the preparation tanks in which the clindamycin phosphate vaginal gel to be detected is added meets the requirement, adjusting the positions of the preparation tanks, and transferring the clindamycin phosphate vaginal gel to the bottle-changing rotating disc; rotating a bottle-changing rotating disc and pushing a tank-making device containing clindamycin phosphate vaginal gel to be detected onto a telescopic assembly; raw materials can be automatically configured, configuration can be completed in the process of moving the preparation tank, the configuration efficiency is improved, the preparation tank is limited through the supporting frame and the synchronous pushing assembly together after carrying, and the preparation tank is fixed, so that the subsequent liquid taking process is facilitated.

The present application relates to a kind of high stability water-in-oil PDRN emulsion and its preparation method, belong to the field of biotechnology;The preparation method includes the following steps: (1) PDRN enzymolysis: PDRN is added in DNaseI, supplement metal ion activates enzyme, when fragment enrichment shows <800bp, terminate enzymolysis reaction, obtain crude enzymolysis solution;(2) moderate molecular weight screening: pressurized ultrafiltration crude enzymolysis solution with ultrafiltration membrane, and screen out the target fragment of the permeate of molecular weight in 120-500bp;(3) water phase system optimization: 1,3-propanediol and ubiquinol are added in the permeate;(4) semi-continuous feeding gradient emulsification.The present application is by precise control PDRN molecular weight to take into account stability and solubility, optimize water phase component to realize system viscosity and transparency double standard, cooperate gradient emulsification to guarantee water-in-oil system stability, significantly improve product comprehensive quality and application value, with outstanding technical advantages.

This utility model provides a rotary kiln flue gas desulfurization device with a sodium-based powder uniformly spraying structure, including: a dust removal component, a powder spraying component, and a pipeline component. The powder spraying component is connected to the pipeline component through a conveying pipe, and the pipeline component is connected to the dust removal component through a connecting pipe. The dust removal component includes: a dust collector body. The pipeline component includes: pipeline one, pipeline two, and pipeline three. Pipeline one and pipeline two are respectively installed at the left and right ends of pipeline two. A vibrator is installed on the upper surface of pipeline two. Compared with the prior art, this utility model has the following beneficial effects: by setting the powder spraying component, the uniform spraying of sodium-based powder during use can ensure that the desulfurizing agent is fully dispersed in the flue gas of the pipeline component. During the flue gas desulfurization process, uniform spraying can give the sodium-based powder more contact opportunities with acidic gases such as sulfur dioxide, thereby forming a better desulfurization effect.

This utility model discloses a flour loosening device for flour processing, including a base plate, a bottom frame fixedly connected to the top of the base plate, a circular frame fixedly connected to the top of the bottom frame, a motor fixedly connected inside the bottom frame, a flour loosening plate rotatably connected inside the circular frame, the top of the motor output shaft fixedly connected to the bottom of the flour loosening plate, multiple flour loosening blocks fixedly connected to the top of the flour loosening plate, and multiple L-shaped dispersing plates fixedly connected to the top of the flour loosening plate. This utility model, through the rotational cleaning of the T-shaped plate and brush, combined with the airflow assistance of a fan, can efficiently remove flour electrostatically adsorbed on the inner wall of the circular frame, reducing residue, avoiding contamination of subsequent batches, and improving the stability of equipment operation. The flour loosening plate drives multiple flour loosening blocks and L-shaped dispersing plates to rotate at high speed, fully dispersing and impacting the flour. Simultaneously, the spiral conveyor blades ensure even flour feeding, preventing accumulation and resulting in a more uniform and delicate flour loosening effect.

The invention discloses a diaphragm for a lithium battery solid electrolyte and a preparation method thereof, belonging to the technical field of lithium ion batteries. Lithium salt, polymer electrolyte, metal oxide, surfactant and binder are added into a solvent to obtain slurry 1; lithium salt, polymer electrolyte, metal oxide, surfactant, binder, surface grafted polymer brush magnesium borate nanowire and organic tin stabilizer are added into the solvent to obtain slurry 2; slurry 1 and slurry 2 are respectively coated on the surfaces of both sides of a base film, and then dried; the invention performs polymer brush grafting treatment on magnesium borate nanowire and adds organic tin stabilizer, so that the solid electrolyte containing magnesium borate nanowire can run stably; magnesium borate nanowire is added into the coating of the diaphragm close to the negative electrode of the lithium battery, so that the ion conductivity of the electrolyte diaphragm is enhanced, and the problem of lithium dendrites growing at the negative electrode and causing battery short circuit due to uneven deposition of lithium ions at the negative electrode is avoided.

The utility model provides a battery recovery device which comprises crushing equipment, a battery recovery device and a battery recovery device, an inlet of the heating volatilization equipment is connected with an outlet of the crushing equipment, and the heating volatilization equipment is used for carrying out heating volatilization treatment on the crushed battery to obtain a gaseous mixed material and a solid mixed material; an inlet of the separation equipment is connected with an outlet of the heating volatilization equipment, and the separation equipment is used for separating the solid mixed material; and the scattering equipment is used for scattering the solid-state mixed material and / or an intermediate mixture obtained after the solid-state mixed material is separated. According to the technical scheme provided by the utility model, the technical problem that the material separation effect of the battery recovery device in the prior art is poor can be solved.

The present invention discloses a sulfur foam combined treatment device and a treatment method thereof, and relates to the technical field of sulfur foam treatment. It comprises a bottom plate, a pair of side plates are fixedly arranged on both sides of the top surface of the bottom plate, a hollow drum is rotatably engaged between the pair of side plates, a central axis is arranged in the middle of the hollow drum, a coarse particle filter disk, a medium particle filter disk, and a fine particle filter disk are slidably sleeved on the right side of the central axis in sequence, a fixed sliding shaft is arranged below the central axis, a plurality of groups of first stirring paddles are fixedly arranged on the left side of the fixed sliding shaft, and the right side of the fixed sliding shaft rotates through the coarse particle filter disk, the medium particle filter disk, and the fine particle filter disk in sequence. The stirring process of the present invention makes the components in the sulfur foam uniform, allows the sulfur particles to be fully dispersed, and prevents agglomeration; during filtering, the sulfur particles can be more effectively separated from impurities; after stirring and filtering, the purity of the sulfur product is significantly improved, and the uniform stirring and fine filtering ensure the stability of the quality of the sulfur product.

Provided is a silica sol in which silica particles are dispersed in a nitrogen-containing solvent for mixing with polyimide-based and polyamide-based polar resins in a state of good compatibility, said silica sol being capable of being subjected to additional silane treatment according to the use or the like, having excellent storage stability at a high concentration, and having both customizability and reliability. The silica sol contains silica particles having an average particle diameter of 5-100 nm obtained by a dynamic light scattering method and having an organic group containing an unsaturated bond between carbon atoms bonded to the surface, and a nitrogen-containing solvent, the amount of organic groups that are bound to the surfaces of the silica particles and that contain unsaturated bonds between carbon atoms is 0.1-2.0 per unit area of the surfaces of the silica particles, the concentration of the silica particles is 25-70 mass%, and free silanol groups are present on the surfaces of the silica particles. The amount of free silanol groups present per unit area on the surface of the silica particles is 0.4-1.2 per nm2.

The invention belongs to the technical field of new-generation printing ink, and relates to printing ink suitable for printing a luminescent layer of an electroluminescent device and a preparation method. The printing ink suitable for printing the luminescent layer of the electroluminescent device is mainly prepared from the following raw materials in parts by mass: 0.5-5 parts of an electroluminescent material, 20-45 parts of a solvent for the electroluminescent material, 15-32 parts of water, 5-20 parts of synthetic resin, 15-30 parts of a solvent for dissolving the synthetic resin, 0.5-3 parts of a surfactant and 0.5-3 parts of a pH regulator, the electroluminescent material is formed by compounding DNA, polyaniline and a rare earth europium complex. The printing ink disclosed by the invention has wide adaptability to printing materials, is simple in preparation process, can be widely applied to printing on the surfaces of various PET films, silicon wafers, glass and paper materials, is firm in adhesion and not easy to fall off, and can realize a high-resolution and high-precision printing effect.

The utility model discloses an integrated device for quickly emulsifying and dispersing a defoaming agent, belongs to the technical field of defoaming agent production, and aims to solve the problems that raw materials in a stirring drum cannot be fully and completely stirred and mixed, the feeding rate of the raw materials cannot be controlled and the raw materials cannot be effectively dispersed. Comprising a stirring barrel, supporting legs, a liquid injection pipe and a feeding hopper, a partition plate is fixedly connected to the top in the stirring barrel, a discharging mechanism is connected to the feeding hopper, the feeding hopper is communicated with the interior of the stirring barrel through the partition plate, and a mixing mechanism is arranged on the stirring barrel; through the arrangement of the mixing mechanism, liquid raw materials in the stirring barrel can be fully mixed and stirred, so that the liquid raw materials can be fully mixed in the stirring barrel, the emulsifying efficiency of the liquid raw materials is improved, and the production efficiency of the liquid raw materials is further improved; the feeding speed of the solid particle raw materials in the stirring barrel can be controllably adjusted.

The utility model discloses a grading type airflow dispersing device which comprises a feeding device, an airflow classifier, a dust remover, an induced draft fan and a rack which are sequentially arranged, a coarse powder outlet of the airflow classifier is connected with a dispersing device, and a bottom outlet of the dispersing device is connected with a screening device; the dispersing device comprises a dispersing barrel and a gas conveying pipe, the upper end of the dispersing barrel is communicated with a coarse powder outlet of the airflow classifier, the gas conveying pipe is arranged around the outer side wall of the dispersing barrel, a plurality of gas conveying branch pipes are connected to the gas conveying pipe at equal intervals, and the other ends of the gas conveying branch pipes are connected with the outer wall of the dispersing barrel and communicated with the inner wall of the dispersing barrel; high-pressure gas is input into the gas inlet end of the gas conveying pipe from the outside; according to the utility model, the structure is compact, the design is novel, the entering material flow is uniform and stable, the purpose of improving the practicability is achieved, the powder entering the dispersing barrel is fully dispersed through high-pressure air flow, and the subsequent circular screening machine performs secondary screening on dispersed split bodies, so that the grading precision of the grading machine is improved.

The utility model discloses a kind of vegetable processing screening equipment, the utility model relates to vegetable processing technical field;Including: feed hopper, support structure, the top of the support structure is fixedly connected with screening structure, the screening structure includes support plate, the bottom of the support plate is fixedly connected with the top of support structure, the top of the support plate is fixedly connected with driving motor, the output shaft both sides of the driving motor are fixedly connected with cam, the outer wall of the cam is rotatably connected with screening rod, the end of the screening rod away from cam is fixedly connected with filter structure, the bottom of the filter structure is fixedly connected with eight elastic sheets symmetrically, rotate by driving motor cam, make filter structure produce stable and efficient vibration.This vibration design can effectively avoid vegetables to accumulate on screen plate, let vegetables be fully dispersed, ensure that smaller impurities and unqualified vegetable pieces can smoothly pass through sieve hole.

The invention discloses a device for carbonation reaction of desulfurization gypsum, and belongs to the technical field of chemical production equipment, the device comprises a reactor shell, an isolator is arranged in the reactor shell, the inner space of the reactor shell is divided into a calcium sulfate leaching area and a carbonation reaction area by the isolator, the isolator comprises a leaching layer, and the leaching layer is arranged in the reactor shell. The internal space of the reaction device is divided by the isolator, so that the dissolution process and the carbonation reaction process of calcium sulfate are carried out in different spaces, the space for generating calcium carbonate is separated from the space where calcium sulfate particles are located, and the produced calcium carbonate cannot be polymerized on the surfaces of the calcium sulfate particles to influence the conversion of calcium sulfate; therefore, the conversion rate of calcium sulfate is higher, and the problem that calcium carbonate generated by carbonation reaction is easy to polymerize on the surfaces of calcium sulfate particles and the conversion rate of calcium sulfate is influenced due to the fact that the dissolution and reaction processes of desulfurized gypsum are carried out in the same space in the prior art is solved.

This invention discloses a method for preparing high-entropy ceramic matrix composites using a reactive infiltration process, belonging to the technical field of ceramic matrix composites. The steps are as follows: at least four single-component carbides are ball-milled and mixed with a carbon source, then dispersed in a dispersion liquid to obtain a slurry; continuous fibers are woven into a preform, and an interface layer and a matrix layer are deposited to obtain a semi-dense composite material; the slurry is introduced through vacuum or pressure impregnation; and a high-entropy carbide matrix is ​​generated in situ and densified by reactive infiltration after embedding with a transition metal and its alloy. This invention solves the problems of long process cycles, high porosity, high cost, and insufficient introduction of high-entropy ceramics in existing processes, achieving rapid densification and improving the material's high-temperature stability, oxidation resistance, and ablation resistance. It is suitable for the large-scale production of thermal protection materials for hypersonic vehicles.

The invention belongs to the technical field of fuel cells, and particularly relates to a proton exchange membrane fuel cell membrane electrode catalyst slurry and a dispersion process thereof. The proton exchange membrane fuel cell membrane electrode catalyst slurry comprises a catalyst, a perfluorosulfonic acid resin solution, ultrapure water, isopropanol and ethanol, the catalyst adopts one or more of a platinum-carbon catalyst, a platinum-cobalt alloy catalyst and a ternary alloy catalyst, and the platinum loading capacity is 40-70%. According to the present invention, by adjusting the ratio of various alcohols to water in the catalyst slurry and ingeniously increasing the temperature of the catalyst slurry during the dispersion process, the accurate regulation of the slurry viscosity is achieved so as to ensure that the slurry can achieve the ideal rheological property during the dispersion process. The control strategy of adjusting the ratio of the alcohol to the water and optimizing the dispersion temperature not only promotes the uniform dispersion of the slurry, but also remarkably improves the dispersion efficiency, and no non-volatile substance is introduced, so that a solid foundation is provided for preparing a high-performance catalyst layer.

This invention discloses a heating-not-burning cigarette cooling unit containing a phase change cooling material and a heating-not-burning cigarette. The unit comprises at least a carrier paper and a phase change cooling material coated on the carrier paper. The phase change cooling material is distributed in a non-fully-covering, regular pattern on the carrier paper. The carrier paper coated with the phase change cooling material forms multiple longitudinally extending channels through winding, folding, gathering, bending, and wrinkling, and has a porosity of 40%-90% along the longitudinal direction. The phase change cooling material comprises 55-96 parts by weight of polyethylene glycol, 1-5 parts by weight of in-situ reinforcing material, and 3-40 parts by weight of thermally conductive filler. The heating-not-burning cigarette cooling unit of this invention has the advantages of high latent heat of phase change, low thermal hysteresis effect, high heat absorption efficiency, apparent stability without collapse, and no leakage.