1855results about How to "Residue reduction" patented technology

The invention relates to bacillus velezensis SMB1 and application thereof in prevention and treatment of plant diseases, and belongs to the technical field of biological prevention and treatment of plant diseases. The strain is preserved in the China Center for Type Culture Collection on November 27, 2024, the preservation address is Luojia mountain, Luojia mountain, eight road, Wuchang District, Wuhan City, Hubei Province, and the preservation number is CCTCC NO: M20242647. The bacillus velezensis SMB1 provided by the invention has a remarkable bacteriostatic effect on plant pathogenic fungi, plant pathogenic oomycetes, plant pathogenic bacteria and animal pathogenic bacteria, has an extremely good broad-spectrum bacteriostatic function, has a great application potential in biological control of plant diseases, can reduce the use of chemical pesticides, and has a good application prospect. The pesticide residue in agricultural products is reduced, the environment is protected, and the urgent demand on pollution-free agricultural product production at present is met.

The present invention relates to the technical field of microfluidics, and discloses a microfluidic chip, which comprises a mixing detection module, a control valve and a power module, and the mixing detection module comprises a plurality of storage cavities, a first channel, a second channel, a third channel, a common channel, a mixing cavity and a detection cavity. According to the invention, the storage cavity for providing the reagent, the channel for fluid such as the reagent and the sample to flow, the mixing cavity for mixing and reacting the fluid such as the reagent and the sample, and the detection cavity for analyzing and detecting the sample are integrated on the mixing detection module; a control valve and a power module which are used for realizing directional flow and mixed reaction of fluid in each channel are arranged as parts which can be removed relative to the mixed detection module, so that the integration degree of the micro-fluidic chip can be improved, and the volume of the micro-fluidic chip can be reduced; in addition, the installation and replacement of the mixed detection module serving as a consumable are facilitated, and the flexibility and convenience of the micro-fluidic chip in use are effectively improved.

The invention relates to a crystallization method of ammonium metavanadate crystals. The crystallization method comprises the following steps: cooling an ammonium metavanadate concentrated solution to obtain an ammonium metavanadate supersaturated solution; the cooling treatment process comprises the step of adding a crystallization regulating agent into the ammonium metavanadate concentrated solution; sequentially carrying out aging treatment and solid-liquid separation on the ammonium metavanadate supersaturated solution to obtain an ammonium metavanadate solid phase; by adding a crystallization regulating agent in the cooling treatment process, regulating the growth rate and growth direction of ammonium metavanadate crystals, matching with the steps of aging treatment and the like, the crystallization rate of the crystallization method is improved, preferably, the crystallization rate is up to 89.5% or above, and the high-purity ammonium metavanadate product with large grain size and regular morphology is obtained. Wherein the median particle size preferably reaches up to 86.5 microns or above, the purity reaches up to 99.97% or above, and the requirement for high-quality vanadium products at present is met.

A rotary excavating drill bit facilitating soil unloading comprises a rotary excavating drill bit body, the rotary excavating drill bit body comprises a drilling barrel, a horizontally-arranged partition plate is fixed to the upper side of the interior of the drilling barrel, an inner cavity of the drilling barrel is divided into an upper equipment cavity and a lower working cavity through the partition plate, a rotating part is installed in the equipment cavity, and a soil scraping assembly is installed in the working cavity; the rotating part comprises a transmission column and a lower circular plate which are coaxially arranged with the drilling barrel, the transmission column is rotationally connected with the drilling barrel, the top of the transmission column extends out of the drilling barrel, a connecting base connected with a drilling rod of the rotary drilling rig is fixed to the top of the transmission column, the lower circular plate is fixed to the bottom of the transmission column, and a through hole matched with the lower circular plate in size is formed in the middle of the partition plate. The lower circular plate is mounted in the through hole, and the lower circular plate is in sliding connection with the inner wall of the through hole; according to the utility model, scraping cleaning and vibration cleaning can be carried out on a soil layer in the drill cylinder, the residual quantity and adhesion phenomena of soil in the drill cylinder are greatly reduced, and the soil unloading efficiency is obviously improved.

The invention relates to the technical field of aerobic composting, in particular to a material turning device for aerobic composting and a layered turning method. The material turning and throwing device for aerobic composting comprises a walking mechanism, a supporting frame and a turning and throwing assembly, the turning and throwing assembly comprises a first turning and throwing roller assembly and a second turning and throwing roller assembly, and the first turning and throwing roller assembly is higher than the second turning and throwing roller assembly and turns and throws materials entering a turning and throwing channel in a layered mode; the second turning and throwing roller assembly comprises a roller shaft, a cutter structure and an adjusting structure used for driving the cutter structure to stretch out and draw back in the radial direction of the roller shaft, a telescopic part of the adjusting structure and the roller shaft are coaxially arranged, the adjusting structure is used for driving an adjusting rod to move in the axial direction of the roller shaft, and a mounting base corresponding to the cutter structure is arranged on the adjusting rod; the cutter structure is connected with the mounting seat through a connecting rod. According to the material turning and throwing device for aerobic composting, the turning and throwing effect is improved, the uniformity of turning and throwing materials is improved, the energy consumption is reduced, and the fermentation period of aerobic composting is shortened.

The invention relates to the technical field of water treatment fluorine removal agent production, in particular to a water treatment fluorine removal agent and a preparation method and application thereof. Specific raw materials are added and reasonable treatment steps are adopted for the wastewater containing fluorine, copper and iron ions generated in the semiconductor chip manufacturing etching process, so that the fluorine ions can be effectively removed; the method can remove copper and iron ions or reduce the influence of the copper and iron ions on fluorine removal (especially wastewater simply treated by sodium sulfide which is specially used for removing copper and iron ions), and has strong pertinence and applicability to etching wastewater with specific water quality; the method is good in collaboration, has both operability and flexibility, and ensures the treatment effect.

Belonging to the technical field of soil sampling, the invention relates to an efficient soil sample sampling mechanism, which comprises a walking trolley body for soil sample sampling, a sampling barrel and an electric lifting column fixedly mounted on the upper surface of the walking trolley body and used for driving the sampling barrel to lift. An upper mounting table and a lower mounting table which are distributed up and down are arranged outside the electric lifting column; a mechanism for driving the sampling barrel to rotate is arranged on the lower mounting table; a vibrating mechanism and a water conveying mechanism are arranged on the lower mounting table, and a first transmission structure and a second transmission structure which are used in linkage with the vibrating mechanism and the water conveying mechanism are mounted on an output shaft at the bottom of the double-shaft motor. According to the efficient sampling mechanism for the soil sample, the pushing block and a knocking mode are linked and matched for use, and then a spraying function is matched, so that the discharging of the sample can be improved, the inner wall of the sampling barrel can be flushed, the sampling efficiency is remarkably improved, the sampling time is shortened, the labor cost is reduced, and the efficient sampling mechanism has the advantages of high efficiency, convenience and high applicability.

The invention discloses a cooling device for cable manufacturing, and relates to the technical field of cable processing. The device comprises a base, a water storage tank is fixed to the middle of the top face of the base, guide rollers are rotationally installed on the left side and the right side of the top of the base through supports, and an air cooling fan is arranged on the right side of the top of the inner wall of the water storage tank; the water cooling device comprises a water pump, a U-shaped water pipe, a spraying pipe, two sleeve plates, a cross rod, a plurality of slapping plates and a plurality of through hole blades, the water pump is fixed to the bottom of the inner wall of the water storage tank, one end of the U-shaped water pipe is fixed to the water outlet end of the water pump, and the spraying pipe is fixed to the other end of the U-shaped water pipe. Through the arrangement of the water cooling device, cooling liquid sprayed by the spraying pipe can be dispersed through the through holes of the through hole blades, so that the dispersed cooling liquid is in uniform and effective contact with the outer surface of the cable, and the cooling effect of the cooling liquid on the cable is improved.

The invention belongs to the technical field of marine product processing, and particularly relates to an automatic sea urchin shell and viscera removing device. An automatic sea urchin shell and viscera removing device is characterized by comprising a shell opening module (100), a shell removing module (200), a sea urchin viscera separating module (300), a storing and conveying module (400) and a control module (6); the shell opening module (100), the shell removing module (200), the sea urchin viscera separation module (300) and the storage and conveying module (400) are electrically connected with the control module (6), and under the control of the control module (6), removal and collection of shells and viscera of sea urchin are completed. According to the invention, the sea urchin shells are rapidly cut open, sea urchin meat is completely stripped from the shells, the sea urchin meat is rapidly separated from viscera, the automation degree is high, and the processing efficiency is greatly improved.

The invention provides an epitaxial growth process for improving doping uniformity of n-type doped silicon carbide, and relates to the technical field of semiconductors. The method is based on a chemical vapor deposition growth technology; 11 to 20 gt; the silicon carbide epitaxial growth is carried out by taking silicon carbide with a 4-degree silicon surface in the direction as a substrate, taking trichlorosilane (TCS) and ethylene (C2H4) as growth sources and taking ammonia gas (NH3) as a doping source. Ammonia gas is adopted as an n-type dopant, the decomposition efficiency of the n-type dopant is close to 100% at the temperature of 700 DEG C or above, and the energy of N-H bond breakage of ammonia gas molecules is 390 KJ / mo which is far lower than 946 KJ / mo needed by N-N bond breakage of nitrogen molecules. Therefore, compared with a traditional doping source such as nitrogen, the ammonia gas has higher doping efficiency, residues of excessive nitrogen-containing precursors in the reaction chamber can be reduced, the memory effect is reduced, and thus more excellent in-chip uniformity and stable inter-chip repeatability of the epitaxial wafer are obtained. The selection range of the doping source is widened, the accurate control of the doping concentration is realized, and the stability of the doping concentration in the continuous growth process is improved.

The invention belongs to the field of pesticides, and relates to a composition containing a biological source pesticide. The composition contains an active component A and an active component B, the component A is selected from a compound I-72, and the component B is selected from biological source insecticides and acaricides; the weight part ratio of the component A to the component B is (1: 99)-(99: 1); wherein the structural formula of the compound I-72 is shown in the specification, and the composition disclosed by the invention has an obvious synergistic effect and can be used for preventing and treating various pests and pest mites. # imgabs0 #

The invention relates to the technical field of gas purity detection, in particular to a gas source purity detection device and a gallium nitride production system. The gas source purity detection device comprises a main pipe body, a supporting piece, a control ring, a moving arm and a concentration sensor. The main pipe body is used for being connected with an air source pipeline. The control ring is rotationally matched with the supporting piece and driven by the driver, and the control ring and the outer wall face are rotationally sealed. A gas collecting groove is formed in the inner ring wall of the control ring. The supporting piece is provided with a mounting blind hole, and the moving arm is slidably matched with the mounting blind hole and is slidably sealed. A first elastic piece is connected between the moving arm and the hole bottom wall of the mounting blind hole in an abutting mode. The concentration sensor is arranged on the outer side wall of the moving arm. When the control ring rotates, the gas collecting groove can periodically communicate with the main pipe body and can also periodically move to the moving arm. The gas source purity can be continuously and accurately detected for a longer time, and automatic calibration is achieved while purity detection is conducted.

The invention discloses an electric heating type scraper conveyor and a control method thereof, and relates to the field of scraper conveyors, the electric heating type scraper conveyor comprises a conveyor body, an operation link is arranged in the conveyor body through a transmission roller sleeve, mounting racks are mounted on the operation link at equal intervals, and a scraper body is hinged to each mounting rack; and meanwhile, a torsional spring is installed at the joint of the scraper body and the installation frame, the bottom end of the scraper body is slidably connected with an extension plate, the bottom of the extension plate is slidably connected with a shovel plate, the shovel plate makes contact with the bottom of the inner side of the conveyor body, and a heating plate is arranged on the inner side of the bottom of the conveyor body. According to the electric heating type scraper conveyor and the control method thereof, when the electric heating type scraper conveyor is used, the angle of the scraper can be adaptively adjusted according to the actual condition of the viscosity of materials, the conveying resistance of the materials and the residual quantity of the materials in the conveyor are reduced in an advancing movement and front-back movement mode, and the conveying quality is improved.

The invention discloses garden plant waste smashing equipment which comprises a scattering mechanism, a shaking-off mechanism, a cleaning mechanism and a smashing mechanism, the smashing mechanism is composed of a shell, a motor, a first crushing roller, a second crushing roller, a first gear and a second gear, the motor is installed on the outer wall of the shell, and the first gear is installed on the outer wall of the shell. An output shaft of the motor is fixedly connected with the first crushing roller, the first crushing roller penetrates through the rotary connecting shell, the second crushing roller penetrates through the rotary connecting shell, the first gear is fixedly connected to the axial outer wall of the first crushing roller, and the second gear is fixedly connected to the axial outer wall of the second crushing roller. By means of the device, juice left after smashing can be cleaned, juice residues are avoided, meanwhile, garden waste is effectively scattered, waste of different shapes and sizes can evenly enter the smashing link, the overall smashing quality is improved, and large particle residues are reduced.

The invention discloses homogeneous stirring equipment for preparing cold water fish feed grease, and relates to the technical field of stirring, and the homogeneous stirring equipment comprises a bin body mechanism. According to the homogenizing and stirring equipment for preparing the cold water fish feed grease, through the design of the bin body mechanism, materials enter from the top of the processing mechanism, circulate and enter the bin body shell, then a motor is started, a central rotating shaft is controlled by the motor to rotate, and the interiors of the materials are rotated by paddle plates, so that the effect of mixing the materials is achieved; through the design of the multiple paddle plates, the stirring range is enlarged, the mixing efficiency is improved, the uniform mixing effect is achieved, the paddle plate grooves are formed, the rotating efficiency is improved through the grooves, the grooves can disturb boundary layers on the surfaces of the paddle plates, resistance is reduced, the flowing efficiency of fluid is improved, and therefore the stirring effect of the paddle plates in the fluid is enhanced; cavitation and cavitation phenomena are reduced, the possibility of generating cavitation and cavitation under high-speed movement is reduced, and the service life of the paddle board is prolonged.

According to the method, a one-pot copolymerization method is adopted, MBAA and borax serve as cross-linking agents, zwitterionic polyelectrolyte hydrogel containing SBMA, PVA, THMA and AMPS is prepared, and the zwitterionic polyelectrolyte hydrogel has excellent adhesion performance and biocompatibility and is suitable for the field of biological medicine. According to the method, the physical characteristics of the hydrogel are enhanced due to crosslinking sites and hydrogen bonds of polyvinyl alcohol. The cationic and anionic groups of SBMA improve the adhesion performance, and the reaction monomer THMA provides hydrogen-bond interaction to further promote adhesion, so that the prepared hydrogel adhesive shows excellent adhesion performance and biocompatibility, and is suitable for biological medicine application of wound dressing, drug release systems, tissue engineering and the like.

The utility model relates to a cosmetic spiral lifting container which comprises a bottle body, a bottle cap, a material taking rod, an inner plug and a spiral lifter, the spiral lifter comprises a stirring portion and a spiral lifting portion, the stirring portion is used for stirring cosmetic materials in a material cavity in a rotating mode, and the spiral lifting portion is used for lifting the cosmetic materials in the material cavity. And the spiral lifting part is used for spirally lifting the cosmetic material body at the bottom of the material cavity into the stirring part. Cosmetic materials in the material cavity are stirred and spirally lifted through the spiral lifter, on one hand, the cosmetic materials in the material cavity can be stirred and mixed through the stirring strips of the spiral lifter, and therefore deposition or layering of the cosmetic materials is avoided. And on the other hand, the cosmetic material body at the bottom of the material cavity is spirally lifted through the spiral lifting plate of the spiral lifter, so that the residue of the cosmetic material body in the material cavity can be reduced, the maximum use is achieved, resources are better saved, and the environment is better protected.

The utility model discloses a horizontal packaging machine, and relates to the technical field of packaging machinery. The utility model discloses a quick release type feeding tailstock, material conveyer, film walking device, roll film forming device, longitudinal sealing device, horizontal sealing device and electrical appliance box, adopts quick release type feeding tailstock, has quick release function, is convenient to clean feeding tailstock, ensures the hygiene of material on quick release type feeding tailstock, improves the production efficiency, reduces the production cost, and improves the production efficiency. The film feeding device is arranged below the material conveying device, namely, a lower film feeding mode is adopted, so that materials are directly conveyed to a rolled film after being output from the quick-disassembly type feeding tailstock, the materials are prevented from making contact with other devices outside the quick-disassembly type feeding tailstock, sanitation of the materials to be packaged is guaranteed, meanwhile, a protective cover is arranged, and the protective cover can be used for protecting the materials to be packaged. External pollution is avoided during longitudinal sealing and transverse sealing, the quick-frozen materials are protected to a certain extent, corrosion of the packaging machine caused by water vapor of the quick-frozen food is avoided, and the packaging machine can be waterproof and moistureproof.

The invention provides a batch straight pipe outer wall spraying device with a water-based paint recycling function. The batch straight pipe outer wall spraying device comprises a sealed cabin, a spraying mechanism, a drying mechanism, a liquid supply mechanism, a recycling mechanism and a numerical control module. The spraying mechanism and the recycling mechanism are both arranged in the sealed cabin, and the recycling mechanism communicates with the spraying mechanism; the spraying mechanism comprises a spraying rod and a centrifugal roller, a to-be-sprayed pipe fitting is installed in the spraying direction of the spraying rod through pipe fitting fixing assemblies, and the pipe fitting fixing assemblies are distributed on the inner wall of the centrifugal roller in an arc shape; the drying mechanism is used for drying a to-be-sprayed pipe fitting, and the liquid supply mechanism is connected with the spraying mechanism and the recycling mechanism; the numerical control module is in signal connection with each mechanism; by means of the spraying mechanism, the drying mechanism and the recycling mechanism, the spraying, recycling and drying integrated function is achieved, the pipe fittings are subjected to batch high-quality spraying, meanwhile, coating recycling is achieved, the situation that the surrounding environment is polluted due to the fact that the coating escapes is prevented, and the production efficiency is greatly improved.

The utility model discloses a cleaning device for dendrobe processing. The cleaning device comprises a screen frame, a mounting plate, a motor, a cleaning brush roller, a first electric push rod, a second electric push rod and a hanging bracket. According to the cleaning device for dendrobe processing, second electric push rods are symmetrically and fixedly connected to the top of a frame, the bottom ends of the second electric push rods are jointly and fixedly connected with a mounting plate, motors are evenly and fixedly mounted on the top face of the mounting plate, and cleaning brush rollers are rotatably mounted at the positions, corresponding to the motors, of the bottom face of the mounting plate; the output end of the motor rotationally penetrates through the mounting plate and then is fixedly connected with the cleaning brush roller, the cleaning brush roller corresponds to and is matched with the screen frame, the mounting plate is driven by the second motor push rod to descend and be inserted into the screen frame, the cleaning brush roller is driven by the motor to rotate, and therefore dendrobium in the screen frame is brushed. And meanwhile, the first electric push rod puts the net frame into the cleaning pool through the hanging bracket for soaking and washing, so that the dendrobe can be cleaned more thoroughly, and residues of stubborn impurities are effectively reduced.

The present invention relates to the field of plastic woven bag processing. The present invention discloses a plastic woven bag wire drawing device, and the problem to be solved by the present invention is that the existing wire drawing machine has low drying efficiency for the plastic film surface. The present invention is composed of a cooling box and an auxiliary drying mechanism. When the plastic woven bag wire drawing device moves back to back through two sliding frames, the upper sliding frame drives the compressed air cylinder to move upward, and the lower sliding frame drives the rectangular tube to move downward and drives the compressed air hollow plate to move downward in the compressed air cylinder, and the gas is pressed into the compressed air hollow plate through the second one-way valve on the lower side of the compressed air hollow plate and transported into the rectangular tube, so that the gas in the rectangular tube squeezes the T-shaped sealing plate to move downward and pushes the air guide tube to deflect with the cross bar of the U-shaped rod as the fulcrum, thereby driving the scraper to deflect and contact the side of the lower sponge roller, and then when the lower sponge roller rotates, the water adsorbed on it is squeezed to the upper side of the air guide tube, ensuring that the lower sponge roller continuously adsorbs the water adhering to the material.

The invention relates to the technical field of plate cutting, and discloses metal plate cutting equipment which comprises a workbench, two cutting tables are arranged at the top of the workbench, a metal plate is placed above the cutting tables, jacking assemblies are arranged on the two sides of a cutting knife board arranged over the metal plate, and vibration assemblies are arranged in the jacking assemblies. An externally-connected positioning assembly is arranged above the cutting tables, the transverse plate table supports the bottom plate to ascend when ascending, so that one ends of the two cutting tables ascend, the inclination effect is achieved, in the process that the cutting tables incline to enable plates to fall out, cutting disintegrating slag left above the cutting tables can slide out together, and therefore the cutting efficiency is improved. And material collection and disintegrating slag treatment can be carried out in the ascending and resetting process of the cutting knife board, so that the cutting process is smoother, and the efficiency is higher.

The invention discloses a high permeability resistant paenibacillus mucilaginosus HX-02 and an application thereof. The preservation number of the paenibacillus mucilaginosus HX-02 disclosed by the invention is CGMCC (China General Microbiological Culture Collection Center) The fertilizer has high permeability resistance in a high-concentration fertilizer environment. The paenibacillus mucilaginosus HX-02 bacterial powder can have a synergistic effect with the fertilizer. The paenibacillus mucilaginosus HX-02 comes from soil, is harmless to human, livestock and environment, and has the advantages of high efficiency, low toxicity, low residue and the like compared with other fertilizers. The compound fertilizer is used for developing the compound fertilizer and meets the requirements of green plant protection and agricultural sustainable development.

The invention relates to the technical field of welding, in particular to railway track laying welding equipment which comprises an adjusting and supporting mechanism, a polishing mechanism and a welding mechanism. The adjusting and supporting mechanism is fixed to the two rail bodies with the gap and can adjust the two rail bodies with the gap to the proper distance. The grinding mechanism can slide longitudinally and transversely relative to the adjusting and supporting mechanism. And the welding mechanism is used for welding a welding seam between the two rail bodies. The grinding mechanism comprises a grinding part and a collecting cover with a magnetic adsorption part on the inner side, the adsorption cover collects chippings generated by grinding, and a cleaning wheel is arranged at the edge position of the collecting cover and can clean the chippings attached to the welding seam and enable the chippings to be adsorbed to the magnetic adsorption part on the inner side of the collecting cover. The problem of residue of grinding scraps can be reduced, slag inclusion during welding is eliminated, the welding quality of the railway track is improved, and the service life of the railway track is prolonged.

The invention discloses a strain fermentation device which comprises a tank body, a sampling mechanism, a cleaning mechanism and a positioning mechanism, the sampling mechanism is arranged on the tank body, the cleaning mechanism is arranged on the sampling mechanism, the cleaning mechanism is used for cleaning the sampling mechanism, and the positioning mechanism is used for positioning in the sampling process of the sampling mechanism. The sampling mechanism comprises a liquid inlet nozzle, a liquid inlet pipe, a fixed cylinder, a liquid pumping cylinder, a piston and a liquid outlet nozzle, the liquid inlet nozzle is arranged in the tank body, the fixed cylinder is arranged on the tank body and penetrates through the tank body, the liquid pumping cylinder is rotationally arranged in the fixed cylinder, the outer circumferential surface of the liquid pumping cylinder is in contact with the inner circumferential surface of the fixed cylinder, and an outer liquid inlet is formed in the fixed cylinder. The invention relates to the technical field of strain fermentation, in particular to a strain fermentation device. The technical problem to be solved by the invention is to provide the strain fermentation device, so that fermentation liquor is not easy to remain in the liquid pumping cylinder, the probability of deterioration and pollution of the fermentation liquor is reduced, and the sampling accuracy is improved.

The invention discloses a semi-solid sodium ion battery and a preparation method thereof. An electrolyte of the semi-solid sodium ion battery is a gel polymer electrolyte formed by formation of an electrolyte solution at 50-80 DEG C, and the electrolyte solution comprises the following components in percentage by weight: 3-20wt% of a fluorine-containing acrylate monomer, 10-20wt% of a fluorine-containing acrylate monomer, 10-20wt% of a fluorine-containing acrylate monomer, 10-20wt% of a fluorine-containing acrylate monomer, 10-20wt% of a fluorine-containing acrylate monomer and the balance of a solvent, 0.01 to 0.1 wt% of an initiator; 10 to 20 weight percent of sodium salt; 2-10 wt% of an additive; and the balance of organic solvent. The organic solvent is ethylene carbonate and propylene carbonate. The fluorine-containing acrylate monomer is adopted in the gel polymer electrolyte, the polymerization degree is high, residues of unsaturated double-bond monomers in the polymer electrolyte are effectively reduced, meanwhile, fluorine free radicals are generated through decomposition under thermal runaway of a battery, the chain type combustion reaction of hydrogen and hydroxyl free radicals in a gas phase is eliminated, and the service life of the battery is prolonged. The flame retardance of the electrolyte is improved, so that the safety of the battery is improved, and the prepared semi-solid sodium-ion battery has relatively good safety and thermal stability.

The invention discloses a silicon wafer polishing composition and application thereof. The silicon wafer polishing composition comprises silicon dioxide hydrosol subjected to special treatment, organic alkali, a pH regulator, an anionic water-soluble polymer and water. According to the silicon wafer polishing composition, the conventional alkaline silica sol is subjected to special treatment, particle residues on the surface of the polished silicon wafer can be greatly reduced, and compared with the prior art, the silicon wafer polishing composition has remarkable advantages.

The utility model provides a superfine bubble synergistic device, which relates to the technical field of bubble generating devices and comprises a bubble generator, a moving component, a reaction box and a sealing component, the reaction box is arranged at the bottom of the bubble generator, the sealing component is arranged in the reaction box, and the moving component is arranged on one side, close to the sealing component, in the bubble generator. A water outlet is formed in the bottom of the bubble generator, and a communicating assembly is arranged between the water outlet and the moving assembly; the moving assembly comprises a motor, a reciprocating lead screw and a sliding block, the motor is fixedly connected to the bubble generator, the reciprocating lead screw is fixedly connected with the output end of the motor, the reciprocating lead screw is rotationally connected to the inner side of the bubble generator, the reciprocating lead screw can push the sliding block to do reciprocating motion along the bubble generator by arranging the moving assembly, and the sliding block pushes the communicating pipe and the shower head to move together; the movement reaction of the nozzle in the reaction box is increased, and the reaction range of the synergistic device to the reaction solution is further increased, so that the reaction efficiency of the synergistic device is improved.

The invention discloses a high-purity BHET low-temperature continuous production process which comprises the following steps: (1) uniformly mixing waste PET powder and a catalyst, adding a solvent, stirring and mixing to form a muddy mixture, pumping the muddy mixture and ethylene glycol into a depolymerization kettle, and carrying out a depolymerization reaction to generate a BHET crude product; (2) the BHET crude product is continuously introduced into a hydrolysis kettle, water is continuously introduced, the BHET crude product is fully dissolved, the temperature in the hydrolysis kettle is 60-100 DEG C, and the pressure in the hydrolysis kettle is normal pressure; (3) filtering the fully dissolved BHET crude product, conveying a BHET liquid-phase product obtained by filtering into a purification tower, and carrying out purification treatment, so as to obtain a purified BHET liquid-phase product; and (4) cooling and crystallizing the purified BHET liquid-phase product, filtering and drying to obtain the high-purity BHET. According to the method, the alcoholysis reaction of PET and ethylene glycol is catalyzed by using the high-activity catalyst, the alcoholysis reaction temperature is reduced, the continuous production mode is more met, the produced BHET is purified, metal residues are reduced, and the purity of the BHET is further improved.

The chitosan hydrogel disclosed by the invention is prepared from the following components in parts by weight: 6 to 15 parts of carboxymethyl chitosan, 0.4 to 1 part of a cross-linking agent and 300 to 900 parts of water. The invention belongs to the technical field of polymer hydrogel, and particularly relates to chitosan hydrogel and a preparation method thereof, the prepared chitosan hydrogel is low in toxicity and safer, a low-temperature and high-temperature step-by-step cross-linking product is adopted, compared with a one-step cross-linking product, the residual amount of a cross-linking agent is lower, a chitosan solution and the cross-linking agent react slowly under the low-temperature condition, and the cross-linking effect is good. The mixing is more sufficient under a liquid condition.