44results about How to "Short heating time" patented technology

The invention belongs to the technical field of thermal barrier coatings, and provides an artificial preparation method of multi-scale aero-engine environment sediment particles. The preparation method comprises the following steps: grinding CMAS original powder into mixture powder; calculating the mass of the required mixture powder according to the powder density of the CMAS original powder and the particle size of the target sediment particles; weighing the mixture powder, and pressing the mixture powder into sheets; in an air suspension furnace, tabletting and melting the mixture powder into balls by adopting a laser; and rapidly cooling to normal temperature to obtain the target sediment particles with the target particle size. The melting process of the CMAS powder is greatly improved, the gas suspension furnace and the laser are used for heating, single CMAS particles with the designed size can be obtained in a short time, the preparation time is shortened, and the preparation cost is effectively reduced.

The invention discloses opaque quartz glass and a preparation method thereof. The preparation method comprises the steps that an induction heating furnace is used, the atmosphere in the furnace is a protective atmosphere which does not participate in the reaction, and the pressure of the protective atmosphere is 10000-90000 Pa; the quartz sand is placed in an induction heating furnace, the temperature is increased to 1400-1570 DEG C, and the quartz sand is preheated; raising the temperature to 1650-1710 DEG C at the speed of not more than 0.2 DEG C / s, so that the quartz sand is uniformly heated; raising the temperature to 1740-1900 DEG C at the speed of not less than 0.2 DEG C / s, so that the quartz sand reaches the melting temperature and is sintered; and finally, cooling at the speed of not more than 2 DEG C / s to obtain the opaque quartz glass. The density of the opaque quartz glass is 0.9-2.19 g / cm < 3 >, the bubble size is 1-300 [mu] m, the transmittance of the opaque quartz glass at the wave band of 380-3000 nm is less than 20% when the thickness is 2 mm, the transmittance of the opaque quartz glass at the wave band of 380-3000 nm is less than 3% when the thickness is 5 mm, and the hardness is 1000-6900 MPa.

The invention belongs to the technical field of special meal liquid nutrition, and discloses an energy-controlled liquid nutrition composition and a preparation method thereof, the energy-controlled liquid nutrition composition comprises the following components by mass: 2-10 parts of milk-derived protein, 0-3 parts of peptide, 3-12 parts of a carbohydrate raw material, 0.5-5 parts of vegetable oil, and 0.1-6 parts of a dietary fiber raw material; 0.05 to 0.5 part of vitamin premix, 0 to 0.1 part of mineral premix and 0 to 0.8 part of L-carnitine; 0.05-2 parts of an emulsifying agent, 0.01-1 part of a thickening agent, 0.05-1 part of a pH regulator, 0-0.1 part of a sweetening agent, 0-1 part of a flavor substance and the balance of water, and the total amount of the components is 100 parts. Through an emulsification technology and a complex nutrition system stabilization technology, the prepared liquid milk energy-control meal replacement product does not need to be brewed and can be drunk after a bottle and a bag are opened. The pH value of the prepared nanoscale emulsion product is neutral or nearly neutral, so that the high-quality milk-derived protein is stably applied, and the phenomena of precipitation, layering, fat floating and the like are avoided.

The invention discloses an aluminum foil annealing device and relates to the technical field of aluminum foil machining, the aluminum foil annealing device comprises a bottom plate and a guide assembly, an annealing assembly is fixed to the top end of the bottom plate, four sets of vertical arms are fixed to the positions, located at the four corners of the annealing assembly, of the top end of the bottom plate, and a top plate is welded to the top ends of the four sets of vertical arms; a bearing assembly is installed above the annealing assembly, and an air cylinder used for lifting the bearing assembly is installed at the top of the top plate. The bearing assembly comprises a connecting plate fixed to the output end of the air cylinder, and a stress plate is assembled below the connecting plate. According to the invention, the two groups of E-shaped plates in the bearing assembly are used for alternately lifting the aluminum foil block, so that the bottom end position of the aluminum foil block is alternately in a suspended and exposed state, the heating time of the bottom of the aluminum foil block can be shortened, and the annealing efficiency and quality of the aluminum foil block are improved in a disguised manner; and meanwhile, garbage generated by annealing falls into the annealing bin along with lifting of the E-shaped plate, and the danger caused by falling of the garbage which is manually taken out is avoided.

The utility model discloses a peripheral heating high-abrasion-resistance corrugated roller, relates to the technical field of corrugated rollers, and aims to solve the problems that most of existing corrugated rollers enter roller bodies through high-heat steam to be heated, the high-heat steam needs to heat far parts for a long time, and near parts and far parts are heated unevenly. Corrugated strips are arranged outside the roller body. The first connecting shaft is arranged at one end of the roller body, and a second connecting shaft is arranged at the other end of the roller body; the first heating channel is arranged in the first connecting shaft, a second heating channel is arranged in the second connecting shaft, a roller cavity is formed in the roller body, the first heating channel and the second heating channel communicate with the roller cavity, a first heating rod is arranged in the roller cavity, and a second heating rod is arranged in the roller cavity. A second heating rod is arranged on one side of the first heating rod, and the first heating rod and the second heating rod correspond to the first heating channel and the second heating channel respectively.

The invention discloses an intelligent warm air system for engineering machinery and a bulldozer. The intelligent warm air system comprises an engine, a T-shaped three-way piece I, a T-shaped three-way piece II, a T-shaped three-way piece III, a reversing electromagnetic valve, a warm air blower, a hot air diverter valve and a fuel heater. The engine is communicated with the warm air blower, the T-shaped three-way piece I and the T-shaped three-way piece II are connected between the engine and the warm air blower in series, the one-way valve is connected between the T-shaped three-way piece I and the T-shaped three-way piece II in series, and the reversing electromagnetic valve is connected to a water return hose of the warm air blower in series. The T-shaped three-way piece III is connected in series between the T-shaped three-way piece I and the reversing electromagnetic valve; the fuel heater is connected in series between the T-shaped three-way piece I and the T-shaped three-way piece III; a hot air outlet of the fan heater is connected with the hot air diverter valve, and the hot air diverter valve is provided with three independent outlets which are communicated with the hot air outlets in the top, the middle and the bottom of the cab respectively. The system is high in temperature rising speed and diversified in operation control mode, has the function of a parking air conditioner, and is comprehensive in heating and more energy-saving.

The utility model provides a heating tank and hot melt material removal equipment, which belongs to the technical field of industrial manufacturing, and comprises a tank body, a blowing part and a first heating part, a carrier is arranged in the tank body and is used for placing a product with a hot melt material attached on the surface, the blowing part is provided with an air outlet and an air inlet, the air outlet is connected with an air outlet pipe, and the air inlet is connected with an air outlet pipe. The air outlet end of the air outlet pipe is communicated with the groove body, the air inlet is connected with an air inlet pipe, the air inlet end of the air inlet pipe is communicated with the groove body, and the first heating piece is installed in the groove body and arranged at the air outlet end of the air outlet pipe; air flows out of the air outlet pipe, hot melting materials on the surface of a product can be melted and separated from the product after the air is heated by the first heating piece, the heated air flows into the air outlet pipe again through the air inlet pipe and the blowing piece, and the circulation mode of the air in the tank body is internal circulation, so that the heat energy loss can be reduced, and the heat utilization rate can be improved; therefore, the energy consumption is reduced.

The utility model discloses a same-frequency same-direction electromagnetic induction heating system, which belongs to the field of induction heating and comprises a tank body, a support table arranged at the bottom in the tank body, a graphite crucible arranged on the support table, a heat insulation layer arranged on the outer side of the graphite crucible, and a plurality of coils sequentially arranged outside the heat insulation layer along the height direction of the graphite crucible. A plurality of coil fixing insulating plates are circumferentially arranged on the inner wall of the tank body, and the plurality of coils are fixed through the coil fixing insulating plates; a support frame is arranged on one side of the tank body, a plurality of support platforms are arranged on the support frame at different heights, power supply cabinets are supported on the plurality of support platforms, inverter power supplies are arranged in the power supply cabinets, each inverter power supply is correspondingly connected with one coil through a cable, and the plurality of inverter power supplies adopt a common-frequency series resonance mode. According to the structure, the multiple induction heating coils are powered by the independent inverter power supplies, the multiple inverter power supplies adopt a common-frequency series resonance mode, the same-frequency and same-phase requirement of the multiple induction heating coils is met, and the interference problem does not exist in the simultaneous operation process.

The invention relates to an Ag (I)-based silicon dioxide adsorbent as well as a preparation method, a regeneration method and application thereof, and relates to the field of adsorbents. The preparation method of the Ag (I)-based silicon dioxide adsorbent comprises the following steps: adding a silicon dioxide carrier into a silver nitrate solution, stirring, filtering, washing, and carrying out vacuum drying to obtain the Ag (I)-based silicon dioxide adsorbent, wherein the mass volume ratio of the silicon dioxide carrier to the silver nitrate solution is 1g: (15-40) mL; the concentration of the silver nitrate solution is 0.05-0.5 mol / L. Adsorption active sites of the Ag (I)-based silicon dioxide adsorbent prepared through the convenient and efficient method are greatly increased, and the Ag (I)-based silicon dioxide adsorbent has good adsorption performance. Besides, the Ag (I)-based silicon dioxide adsorbent saturated in adsorption is placed in a proper microwave environment for regeneration, energy consumption is low, effective regeneration of the adsorbent can be conveniently and efficiently achieved, resource waste of the adsorbent is avoided, and secondary pollution is reduced.

The present invention discloses a reverse progressive pneumatic inflation forming device and method for difficult-to-deform materials. According to the progressive forming processing technology, the present invention discretizes the target profile of the workpiece to be formed into several layers of to-be-formed areas in the vertical direction, and then discretizes each layer of to-be-formed areas into several sub-areas to be formed in the horizontal direction, plans a forming path according to the sub-areas to be formed, and uses a local pneumatic inflation forming process to process the sub-areas to be formed one by one, and then manufactures the target profile that meets the requirements layer by layer in the vertical direction of the workpiece to be formed. The present invention proposes the concept of local pneumatic inflation forming for the first time, thereby organically combining the two modes of pneumatic inflation forming and progressive forming. For difficult-to-deform materials or components with complex cross-sections, it can not only improve the forming limit of the formed parts, but also improve the surface quality of the formed parts, and at the same time has the advantages of low tool cost, short heating time, and no need for specific molds.

The invention belongs to the technical field of food processing, and provides a spray drying system for soybean milk powder production, comprising: a feeding module for conveying soybean milk to a spray drying tower; the spraying module is used for atomizing the soybean milk into fine liquid drops; the drying module comprises a drying tower, and a heat exchange system is arranged in the drying tower and used for conducting hot air drying on the atomized soybean milk liquid drops; the separation module is used for separating the dried soybean milk powder from the hot air; the collecting module is used for collecting the dried soybean milk powder; the control system is used for controlling key parameters of the whole spray drying process, and the key parameters comprise temperature, humidity and pressure; by means of the integrated spray drying system, accurate control over key parameters in the soybean milk powder production process is achieved, the nutritional ingredients and flavor of soybean milk powder can be guaranteed by accurately controlling the temperature, humidity and pressure, and the efficiency and quality of products are improved.

The invention relates to the technical field of valve production, in particular to equipment for producing large-diameter pipe fitting valve plastic products through a mold pressing method. The equipment for producing the large-diameter pipe fitting valve plastic product through the mold pressing method comprises a feeding table, a sliding rail and a hydraulic machine, an extrusion mechanism is installed at the upper end of the feeding table, and the extrusion mechanism comprises an extrusion box and a stock bin; the sliding rail is located on one side of the feeding table, and a sliding table is installed on the sliding rail in a sliding mode. A temperature control box and a forming mold are installed at the upper end of the sliding table. A hydraulic machine is further arranged on one side of the sliding rail. A hydraulic assembly is installed at the upper end of the hydraulic machine. According to the equipment for producing the large-diameter pipe fitting valve plastic product through the mold pressing method, production raw materials can be extruded or poured into a forming mold cavity after being continuously plasticized in the extrusion mechanism, the raw material heating time is shortened, and the staying heating time of the production raw materials in an injection molding machine barrel is shortened; and due to continuous plasticizing, the injection molding amount of the production raw materials can be continuously increased without being limited.

The electromagnetic air heater comprises an electromagnetic heating air duct, a flow collecting cover and an electromagnetic coil, the electromagnetic heating air duct comprises an outer duct body and an iron inner core arranged in the outer duct body, a plurality of fins are arranged between the outer duct body and the iron inner core, the flow collecting cover is communicated with one end of the electromagnetic heating air duct through a flange, and the electromagnetic coil is arranged in the outer duct body. The flow collecting cover is provided with an air inlet, the other end of the electromagnetic heating air cylinder is provided with an air outlet, and the electromagnetic coil is wound on the outer wall of the outer cylinder. In practical application, the electromagnetic air heater is used for replacing a resistance heater, the heat efficiency is high, more energy is saved, the heating time is short, the energy conversion efficiency is high, the electromagnetic air heater directly heats airflow, the intermediate heat transfer process is reduced, and the heat efficiency utilization is improved. And high-efficiency and energy-saving electricity utilization is really realized, the production cost is reduced, and environmental protection is facilitated.

The invention provides repairing alloy powder, a pasty material and an in-hole repairing method for a main drive sealing runway of a tunnel boring machine. The repair alloy powder comprises Ni-based alloy powder, WC particles and diamond particles. The repairing alloy powder comprises, by mass, 0.7%-1.2% of C, 3.0%-5.5% of Si, 3.0%-5.5% of B, 10%-20% of Cr, 7%-10% of Fe, 5%-20% of WC particles, 5%-20% of diamond particles and the balance Ni, wherein the mass of the C, the Si, the B, the Cr, the Fe, the WC particles and the diamond particles is 100%. According to the repairing method, in-hole repairing is conducted on the abraded position of the sealing runway through the repairing method of first cold coating and then heating, the repairing speed is high, and the quality of the repaired surface is high. Compared with traditional surfacing repair, the sealed runway repaired through the method is lower in abrasion weight loss. In addition, dust pollution in the repairing process is avoided, the utilization rate of repairing powder is increased, and the polishing workload after repairing is reduced.

This invention discloses a method for simultaneously separating multiple active ingredients from *Pterocarya stenoptera* essential oil, belonging to the field of natural product separation and purification technology. The invention includes the following steps: (1) sequentially subjecting *Pterocarya stenoptera* to steam distillation and molecular distillation to obtain *Pterocarya stenoptera* essential oil; (2) subjecting the *Pterocarya stenoptera* essential oil to dehydration and degassing to obtain pretreated essential oil; (3) subjecting the pretreated essential oil to two-stage molecular distillation to obtain fraction 1, fraction 2, and residual liquid; (4) subjecting fraction 1, fraction 2, and residual liquid to vacuum precision distillation to simultaneously separate multiple active ingredients from *Pterocarya stenoptera* essential oil. This invention features a green and environmentally friendly process, no organic solvent residue, low energy consumption, and strong controllability, enabling continuous industrial production. The purity of each monomer product is ≥98%, with the main component, methyl salicylate, having a purity ≥99%. This fully exploits the resource value of *Pterocarya stenoptera* essential oil and significantly increases the added value of the product.

The invention relates to the technical field of food processing, and particularly discloses a preparation method of an oolong tea extract. Pure water extraction is adopted, no organic solvent is introduced for extraction, the loss of flavor substances is reduced, and the method is green and environmentally friendly; high-temperature extraction is used in early-stage extraction, the extraction frequency can be reduced, the extraction efficiency can be improved, the energy consumption can be reduced, one of vitamin C, sodium erythorbate and astaxanthin is added to serve as an antioxidant, the pH is adjusted to be faintly acid, the antioxidant can keep the maximum activity and stability, and the antioxidant effect is achieved; according to the method, a molecular distillation technology, an enzymolysis technology and a membrane concentration technology are combined, so that the extraction efficiency of the oolong tea extract is improved, the flavor of the oolong tea extract is remarkably improved, and the method is simple in used equipment, low in energy consumption, easy to operate and suitable for industrial production.

The invention relates to the technical field of pharmaceutical preparations, in particular to a hydroxytyrosol berberine hydrochloride composite liposome emulsion, a preparation method and application thereof.After the hydrophilic and hydrophobic properties of hydroxytyrosol are adjusted through berberine hydrochloride, sucrose or sodium chloride solid-phase particles are adopted as a carrier to be combined with a wrapping material solution to form a no-load liposome; and then coating hydroxytyrosol double salt to prepare the hydroxytyrosol berberine hydrochloride composite liposome emulsion. By utilizing the excellent specific surface area of the solid-phase particles, the coating material is uniformly coated on the surfaces of the solid-phase particles to form a thin film with relatively thin thickness, and the drug loading capacity is greatly improved while the hydroxytyrosol double salt is rapidly encapsulated.

The utility model relates to a spot welding device for a metal sheet and a multi-strand wire, which is used for realizing spot welding of the metal sheet, the multi-strand wire and a transition sheet, and comprises a machine table and a spot welding mechanism arranged on the machine table, the spot welding tool is used for placing and moving the metal sheet, the multi-strand wire and the transition sheet and comprises a first positioning and conveying assembly and a second positioning and conveying assembly; and the spot welding machine is positioned at the spot welding station and comprises a welding head positioned above the spot welding station and an upper spot welding electrode connected with the welding head. Compared with the prior art, the welding fixture has the advantages that the process stability is improved, the welding firmness is improved, the product spot welding efficiency and the product percent of pass are improved, and the like.

The utility model relates to the technical field of wood pulp gridding paper production and manufacturing, in particular to a hot-pressing composite drying device for producing wood pulp gridding paper. Comprising a pair of composite compression rollers and a closed steam heating device, wherein the composite compression rollers are used for hot-pressing and compositing an upper layer of raw material paper, a lower layer of raw material paper and a middle layer of loose gridding cloth together; the closed steam heating device is arranged on one side of a wood pulp gridding paper discharging end of the composite compression rollers; the closed steam heating device comprises a closed steam box, a wood pulp gridding paper inlet slit and a wood pulp gridding paper outlet slit, wherein the wood pulp gridding paper inlet slit and the wood pulp gridding paper outlet slit are formed in the closed steam box along the moving path of the wood pulp gridding paper. The inner space of the closed steam box is divided into an upper steam chamber and a lower steam chamber by the wood pulp grid paper entering the closed steam box, and steam supply pipes correspondingly communicated with the upper steam chamber and the lower steam chamber of the closed steam box are respectively arranged on the closed steam box. According to the utility model, the manufacturing quality of the wood pulp gridding paper can be improved, and the production energy consumption is low.

The utility model discloses a heating fumigation mechanism, which belongs to the technical field of electronic cigarettes and comprises a base, an air inlet, a heating device, a heating device and a heating device, the upper end face of the base is provided with a containing cavity, and the base is further provided with an air inlet communicated with the containing cavity; the ceramic heating rod is positioned in the accommodating cavity; the heating pot is located above the containing cavity, the heating pot is filled with tobacco, and air outlet holes are formed in the bottom face of the heating pot. According to the heating and fumigating mechanism, heat can be more effectively utilized to heat tobaccos so as to improve heating efficiency, and the tobaccos are heated in two modes so that the tobaccos can be heated more sufficiently and evenly.

The utility model relates to a door body structure for dish washer and dish washer, door body structure includes the door body, be equipped with the water tank in the door body, be equipped with the heating part for heating the water in the water tank into steam on the water tank, the inner wall surface of door body is equipped with the spout that links up with the export of water tank. The water tank is independently integrated on the door body, so that the waterway of water tank is not connected with the waterway in the inner bag, the water in the inner bag is the cleaning water, and it can be heated to 75 DEG C, which is the water temperature of normal work of the dish washer, and it will not affect the service life of the key parts, the water of the water tank is specially used for generating steam and is heated to 100 DEG C. In this way, the water that needs to be heated to 100 DEG C is much less than the water in the inner bag, the required heating time is short, and the energy consumption is low.

The utility model discloses an integrated sink, including the groove body (1) and install the pulsator washing machine (2) of groove body (1) side part, its characterized in that: the pulsator washing machine (2) including the cleaning tank (21), be located in the cleaning tank (21) inside's rotary drum (23) and be used for driving the drive assembly (24) of rotary drum (23) rotation, this pulsator washing machine (2) have working condition, under working condition, the rotary drum (23) horizontal arrangement. Compared with prior art, the integrated sink of the utility model is water -saving and has good cleaning effect when cleaning food material.

The application relates to the technical field of material crushing, in particular to a preparation method of a high-wear-resistance and high-toughness crusher blade and the obtained blade, and the preparation method comprises the following steps: blanking a steel billet into a steel block and forging the steel block into a circular ring, rough machining, quenching and tempering heat treatment and fine machining are performed on the upper and lower surfaces of the circular ring, so that the upper and lower surfaces of the circular ring are flat and have a hardness of HRC 28-32; an induction coil is prepared, the upper and lower surfaces of the circular ring are subjected to induction quenching treatment, so that the surface hardness of the circular ring reaches HRC 58-62; a plurality of teeth are machined in the circumferential direction of the circular ring to obtain a preform; a profiled coil is prepared, and the teeth are subjected to induction quenching treatment, so that the hardness of the side surfaces of the teeth reaches HRC 58-62; the preform is subjected to grinding and a spline hole or a hexagonal hole is machined to obtain the high-wear-resistance and high-toughness crusher blade; the application can obtain the crusher blade which has high surface hardness, high wear resistance, toughness in the core and does not break and fail when crushing hard objects.

The invention relates to the technical field of oil sprayer bodies, and discloses an oil sprayer body blank local heating forming process and a mold. Step 2, local heating; step 3, closed die forging; step 4, post-treatment; through the local heating forming process of the oil sprayer body blank, shot blasting of the blank is not needed any more, preheating and graphite precoating are not needed either, and the production efficiency is high; only local heating is adopted, the heating time is short, energy is saved, carbon emission can be effectively reduced, and green manufacturing is achieved; local heating is adopted, the lower end of the blank does not deform, and burrs are avoided; through the design of the forming die, closed forming is adopted during forging, a forge piece is free of flash, the material utilization rate is high, automatic forging is easy to achieve, and the die is simple in structure; and meanwhile, through the arrangement of the split structure, the deformation area of the mold can be conveniently and independently replaced, and therefore the production cost of the mold is reduced.

According to the novel cleanable soup cooking device, a soup cooking pot is arranged on a supporting plate, a pot cover assembly is arranged at the upper end of the soup cooking pot, a rotary telescopic mechanism is arranged at the bottom of the soup cooking pot, and a rotary base on the rotary telescopic mechanism is located in a rotary telescopic mechanism mounting hole in the bottom of the soup cooking pot; a sliding rail on the rotary telescopic mechanism is located in the soup cooking pot and fixedly connected with the inner wall of the pot container, a transmission assembly on the rotary telescopic mechanism is located outside the soup cooking pot, a controller is arranged on a pot cover assembly, an anti-skid plate is arranged between the soup cooking pot and a supporting plate on the pot frame, and the tail end of a second telescopic air cylinder is hinged to a side supporting plate on the pot frame. The soup cooking pot is cleaned through the ultrasonic generator, the rotary telescopic mechanism is used for automatically discharging sewage, the ultrasonic generator is used for automatically cleaning the soup cooking pot, the ultrasonic generator is used for automatically cleaning the soup cooking pot, the ultrasonic generator is used for automatically cleaning the soup cooking pot, and the ultrasonic generator is used for automatically cleaning the soup cooking pot. And manpower and material resources are saved.

The invention discloses a plastic film raw material extrusion device, comprising a support seat, a stirring and conveying tank body, a feeding hopper, a stirring and conveying mechanism, and a rotating drive mechanism; the invention can adjust the heating time and the feeding speed according to the fluidity of the raw material, and the invention can also assist in adjusting the feeding speed, thus breaking through the single constraint of the motor.

The invention belongs to the technical field of chemical engineering, and discloses a molecular distillation decolorization method of long-chain fatty acid. According to the scheme, gas and solid impurities in long-chain fatty acid raw materials are removed through melting and filtering, and colorless or light-colored fatty acid products are separated from mixed materials through molecular distillation by means of free path differences among the fatty acid products, colored polymers and discolored metamorphic products. The method has the advantages that no adsorbent is used, so that the residue of the waste adsorbent and the post-treatment process are avoided; molecular distillation is adopted for direct separation, the heating time is short, the vacuum degree is high, and deterioration and coking of materials at high temperature for a long time are avoided; no solvent is needed; a pump can be used for continuous feeding and discharging, and continuous operation is facilitated; the method is safe, efficient and stable in decolorization effect.

The utility model provides a continuous production system of 1, 3-propane sultone, which comprises a synthesis unit, a nanofiltration separation unit, a cation exchange unit, a falling film concentration unit and a molecular distillation unit which are sequentially communicated through fluid, the synthesis unit accurately controls reaction conditions by adopting a pipeline reactor, continuous feeding and continuous reaction are realized, and the yield of 1, 3-propane sultone is improved. The nanofiltration separation unit adopts nanofiltration equipment to realize rapid separation of products with different molecular weights and small molecular substances, the system safety is improved, the cation exchange unit obtains a 3-hydroxypropanesulfonic acid aqueous solution through a resin tower, and then the 3-hydroxypropanesulfonic acid aqueous solution is evaporated and concentrated through a falling-film evaporator of the falling-film concentration unit; the concentrated solution is fed into a molecular distiller of the molecular distillation unit for esterification distillation, the product is uniformly heated, the heating time is short, the quality of the 1, 3-propane sultone product is improved, the byproduct production rate is reduced, and safe and continuous production is realized.

The present invention provides a tread rubber composition, a preparation method and an application thereof, and relates to the technical field of tire manufacturing. The tread rubber composition comprises the following components by weight: 80-120 parts of natural rubber, 20-70 parts of filler, 1-10 parts of activator, 1-10 parts of vulcanizer, and 0.05-1 parts of low eutectic solvent; wherein the low eutectic solvent comprises polyethylene glycol, choline chloride and thiourea. The tread rubber composition of the present invention can effectively achieve high-efficiency vulcanization at low temperature, that is, to achieve the effect of low temperature and long time at low temperature in a short time, and at the same time, the bio-based elastomer is heated for a short time, has a better molecular weight retention rate, can further reduce rolling resistance and improve wear resistance.

This invention discloses a method for preparing thermochromic PVC film. The method involves first in-situ coating an organic reversible thermochromic microcapsule with a rigid nano-silica shell, followed by oleophilic coupling modification. The modified microcapsules are then low-shear ground with plasticizers and dispersants to form a pre-dispersed color paste. PVC resin powder and additives are then pre-plasticized by high-speed dry mixing, and after cooling, they are cold-mixed and compounded with the color paste. Finally, the finished product is obtained through intensive extrusion, stepped temperature-controlled calendering, and annealing cooling. This invention improves the heat resistance and shear strength of the microcapsules through inorganic rigid coating, preventing the penetration and poisoning of plasticizers. Combined with surface modification and cooling compounding processes, it effectively avoids capsule rupture and aggregation, significantly improving the initial color development rate and reversible color-changing cycle life of the film.