67results about "Sub-atmospheric pressure processes" patented technology

The invention relates to the technical field of manufacturing of fusible polytetrafluoroethylene resin, in particular to a method for treating an unstable terminal group of fusible polytetrafluoroethylene, which is used for solving the problem that the unstable terminal group cannot be thoroughly treated in the prior art. The method comprises the following steps: heating fusible polytetrafluoroethylene resin to a molten state, after self-reaction, introducing high-purity fluorine-nitrogen mixed gas to carry out fluoridation reaction, and extracting impurities generated by the reaction to obtain unstable soluble polytetrafluoroethylene resin with a treated terminal group; according to the method, soluble polytetrafluoroethylene resin is heated to a molten state, and unstable terminal groups are thoroughly treated through self-reaction and fluorination reaction.

The invention relates to the technical field of cable adhesive production, and particularly discloses a reaction kettle for cable adhesive production, which comprises a kettle body and a stirring mechanism, the stirring mechanism comprises a stirring rod and a stirring blade, the stirring rod is rotatably arranged in the kettle body, the stirring blade is connected to the stirring rod, the stirring rod can rotate, and the reaction kettle also comprises an apportionment mechanism, the apportioning mechanism comprises a lifting part and an apportioning part, the lifting part comprises a mounting cylinder, a rotating cylinder and a spiral blade, the mounting cylinder is connected to the kettle body, the rotating cylinder is connected to the stirring rod, the spiral blade is connected to the stirring rod, the apportioning part is mounted on the mounting cylinder, the spiral blade is located in the mounting cylinder, and the mounting cylinder can extend into the upper-layer cable glue; the stirring rod rotates to drive the spiral blade to rotate, so that the spiral blade lifts the cable adhesive upwards and conveys the cable adhesive to the allocation part for allocation; according to the reaction kettle for cable adhesive production, cable adhesive can be conveyed to the allocation part and is allocated, and the speed of eliminating bubbles in the cable adhesive is increased.

The invention relates to a salification-polymerization integrated production device and a production method of bio-based nylon 56. The device comprises a salification tank, an additive storage tank, a reaction kettle, a vacuum system, a granulator, a drying device and a control system. The control system of the method adopts a PLC (Programmable Logic Controller), the control systems of all main devices are mutually independent and have certain relation, all the devices are divided into different process stages according to different functions in the implementation process, and when the conditions meet the pre-designed process conditions, the system can automatically enter the next process stage without manual intervention. According to the present invention, the bio-based nylon 56 salt solutions with different pH values and different concentrations can be blended, and the blended raw materials are subjected to concentration, polymerization, granulation and drying so as to obtain the integrated polymerization method, such that the time is saved for the subsequent production, the production efficiency is improved, the environmental protection is provided, and the good market prospect and the good development space are provided for the prior art.

A production apparatus for cyclic esters, the production apparatus comprising: a barrel (10), which comprises a material chamber (101), and a feed inlet, a melt outlet (112) and at least one vacuum vent that are in communication with the material chamber (101); a hollow shaft (20) passing through the barrel (10) along a material feeding direction, wherein the hollow shaft (20) is provided with a medium chamber (201) therein; and several hollow disks (30) disposed in the barrel (10) along the feeding direction, wherein the hollow disks (30) are disposed on the outer periphery of the hollow shaft (20); and a medium flow channel (301) in communication with the medium chamber (201) is provided in each hollow disk (30), at least part of the medium flow channel (301) being a spiral from the outside to the inside, and / or the medium flow channel (301) comprising a plurality of parallel medium sub-channels (305). After entering the medium chamber (201), a heat medium flows into the medium flow channels (301) and is uniformly distributed within the hollow disks (30) via the medium flow channels (301). The hollow shaft (20) and the hollow disks (30) cooperate with each other to uniformly heat oligomers in the material chamber (101), thereby avoiding carbonization and coking caused by the non-uniform heating of the oligomers.

A system and method of preventing reverse migration of contaminant molecules includes an enclosure and a quantity of metal materials included within the enclosure. The quantity of metal materials includes multiple metal material surfaces. The metal material surfaces are conditioned to be attractive to at least a first portion of contaminant molecules. The first portion of contaminant molecules are adsorbed on the multiple metal material surfaces. The enclosure can be a canister with UHP gas flowing from an inlet to an outlet and the first portion of contaminant molecules randomly pass through the canister outlet into the canister.

The invention relates to a reaction device for preparing a magnesium hydroxide flame retardant based on a gas phase method and a preparation method thereof, and belongs to the technical field of chemical engineering equipment and inorganic non-metallic material preparation. The reaction device comprises a precursor precise conveying system, a multi-temperature-zone laminar flow reaction system, an efficient particle collecting system and a central process control system. According to the method, a magnesium source precursor gas-phase flow, a hydrolytic agent gas-phase flow and a surface modifier gas-phase flow are respectively provided by the precursor precision conveying system, are introduced into the multi-temperature-zone laminar flow reaction system through the three coaxial laminar flow nozzles, and are sequentially subjected to controlled mixing in the preheating mixing zone. The whole process is carried out in a gas-phase low-pressure laminar flow environment, hard agglomeration of particles is effectively avoided, the prepared magnesium hydroxide flame retardant has the advantages of being uniform in primary particle size, good in dispersity and high in surface organification degree, and the compatibility and flame retardant efficiency of the magnesium hydroxide flame retardant in a polymer matrix are remarkably improved.

The invention discloses an energy-saving and consumption-reducing system and method based on an alkoxylation device.The system comprises a pretreatment kettle, the discharging end of the bottom of the pretreatment kettle is communicated with the top of the pretreatment kettle sequentially through a pretreatment kettle outer circulating pump and a pretreatment kettle outer circulating heater, and the discharging end of the pretreatment kettle outer circulating pump is further communicated with a reaction kettle; the bottom discharge end of the reaction kettle is sequentially communicated with a reaction kettle circulating pump and a reaction kettle circulating heat exchanger, the discharge end of the reaction kettle circulating heat exchanger is respectively communicated with the reaction kettle and a gas-liquid mixer, and the discharge end of the reaction kettle circulating heat exchanger is also communicated with a reaction heat recovery system; the discharging end of the reaction kettle circulating pump is also communicated with the feeding end of a post-treatment kettle, and the bottom of the post-treatment kettle is provided with a discharging end; the method comprises the steps of pretreatment, alkylation reaction, aftertreatment and tail gas washing. According to the scheme, the energy-saving and consumption-reducing effects are remarkable.

The application discloses a single-component organic silicon sealant for solar photovoltaic modules and a preparation method thereof, and relates to the technical field of high polymer materials. The single-component organic silicon sealant for solar photovoltaic modules is prepared by mixing 107 silicon oil, reinforcing fillers, a silane coupling agent, a catalyst and a cross-linking agent. The preparation method of the single-component organic silicon sealant for solar photovoltaic modules is realized by a preparation device of the single-component organic silicon sealant for solar photovoltaic modules. The preparation device of the single-component organic silicon sealant for solar photovoltaic modules comprises a reaction kettle. The application can form a continuously shrinking closed space in the reaction kettle, thereby shortening the time required for vacuumizing treatment. Nitrogen can be input into the material from the lower part of the material, thereby effectively improving the heat exchange area of nitrogen and the material, improving the material cooling speed, and thereby obviously improving the preparation efficiency of 107 silicon oil.

The invention discloses an ammonia reaction control method and system for a vacuum pushed slab kiln, and belongs to the technical field of special furnaces for chemical engineering, and the method is characterized by comprising the following steps: acquiring sensor data at the current moment; the push plate offset and the material offset are obtained according to the sensor data; according to the push plate offset and the material offset, the residual reaction amount of the current functional area is obtained; the concentration of at least one ventilation pipe in the current functional area is adjusted according to the residual reaction amount, the vacuum pushed slab kiln comprises a plurality of functional areas, each functional area comprises a plurality of ventilation pipes, and all the ventilation pipes are connected with gas storage tanks with different concentrations. The offset of the material is obtained, and the ammonia concentration is adjusted according to the offset of the material, so that the reaction quality of the material is ensured, the loss of the material in the preparation process is reduced, and the production resources and the production time are saved.

The present application belongs to the technical field of industrial control, and discloses a material dissolving reaction monitoring method, a monitoring device and a material dissolving reaction system. The material dissolving reaction monitoring method comprises the following steps: based on a reaction equation, calculating a first gas mass of a gas generated in a dissolving reaction according to the mass of all materials; making the environment in a dissolving tank reach a target environment; in the dissolving reaction, when a preset condition is met, making the vacuum degree in the dissolving tank and the vacuum degree in the dissolving tank before the dissolving reaction be the same, calculating the difference between a first mass before the dissolving reaction and a second mass in the dissolving reaction to obtain a second gas mass, the first mass and the second mass being the sum of the mass of the dissolving tank, a first reaction material and a second reaction material, when the difference between the first gas mass and the second gas mass is less than or equal to a preset threshold, determining that the dissolving reaction is completed, otherwise, determining that the dissolving reaction is not completed. The present application can effectively determine whether the dissolving reaction is completed.

The invention relates to the technical field of solid waste resource utilization and adsorption material preparation, in particular to a process system for subcritical hydrothermal preparation of an activated carbon-zeolite composite molecular sieve from fly ash. The process system comprises a raw material pretreatment unit, a homogenizing and blending unit, a pressurization and heat compensation device, a subcritical hydrothermal reaction device, a heat recovery and pressure regulation device, a pressure self-driven separation device, a purification and drying device, an inorganic salt separation device and a wastewater neutralization unit. The fly ash is used as a raw material, the subcritical hydrothermal reaction device is combined with the characteristics of subcritical water and the synergistic effect of an oxidizing agent, conversion of silicon-aluminum components in the fly ash into zeolite and in-situ activation of carbon residues into activated carbon are synchronously achieved, and the problems that in the technology for preparing the zeolite molecular sieve from the fly ash, carbon residue resources are wasted, the waste liquid generation amount is large, and the cost is low are solved. The treatment cost is high; and the reaction energy consumption is high.

Disclosed in the present application are a single-walled carbon nanotube continuous production apparatus and production method. The production apparatus comprises a vacuum-tight box and a high-temperature growth furnace; a conveying device is provided in the vacuum-tight box, a growth substrate being placed on the conveying device; a sample feeding cylinder corresponding to the conveying device is provided in the vacuum-tight box; the vacuum-tight box is connected to a first vacuum pump; a growth quartz tube is provided in the high-temperature growth furnace, the growth quartz tube being connected to an outlet of the vacuum-tight box; the growth quartz tube is further connected to a carbon source supply system and a second vacuum pump; the production apparatus further comprises a sample acquiring cylinder and a cooling quartz tube, the cooling quartz tube being connected to the growth quartz tube; the sample acquiring cylinder is used for discharging out of the high-temperature growth furnace the growth substrate loaded with a single-walled carbon nanotube, and then feeding into the cooling quartz tube said growth substrate to be cooled. The production apparatus and the production method not only can produce and obtain relatively pure and uniform single-walled carbon nanotubes, but also exhibit a high degree of automation and high production efficiency, and can achieve the continuous production of the single-walled carbon nanotubes.

The application discloses an ozone method for preparing glyoxylic acid monohydrate distillation reaction control method, including the following steps: step S1, the glyoxylic acid-formic acid mixed solution obtained by oxidation reaction is introduced into the distillation kettle; step S2, the heat exchange jacket and heat exchange coil in the distillation kettle are passed through 80 DEG C hot water; step S3, the vacuum is opened, and the inside of the distillation kettle is subjected to vacuum distillation; step S4, the vacuum degree, temperature and material density in the reaction kettle are monitored; step S5, the distillation reaction endpoint is judged by the change trend of the material temperature, vacuum degree and density in the kettle; step S6, the finished product after distillation is discharged into the glyoxylic acid storage tank, and the formic acid solution evaporated and condensed is discharged into the receiving tank. The application controls the parameters of the distillation process accurately, stops the distillation of the material immediately when the reaction reaches the endpoint, guarantees that the glyoxylic acid monohydrate product reaches the accurate water content ratio, and prevents water from being over-steamed, so that the product cost is prevented from being increased.

The invention relates to a low-vacuum online graphitization system for 14C helium protection atmosphere determination by accelerator mass spectrometry, which belongs to the field of preparation of 14C graphite determination by AMS, and comprises a He source and purification assembly, a sample injection and combustion assembly, a gas flow rate adjusting and monitoring assembly, a CO2 chemical purification assembly, a CO2 physical purification trapping and graphitization assembly and a vacuum degree control assembly. The He source and purification assembly provides ultra-pure He gas as pipeline purge gas, carrier gas and graphitization shielding gas. The sample injection and combustion assembly efficiently and thoroughly converts solid organic carbon into CO2 gas. The gas flow rate adjusting and monitoring assembly adjusts and monitors the pipeline gas flow rate. And the CO2 chemical purification assembly is used for removing water vapor in the mixed gas. CO2 is further purified and graphitized by the CO2 physical purification and capture and graphitization assembly. The vacuum degree control assembly adjusts the flow rate of the purge gas and controls the internal pressure of the reduction unit. According to the invention, the carbon element in the solid sample can be efficiently converted into graphite with high quality.

The present inventive concept relates to a device for treating an exhaust gas, and more particularly, to a plasma device capable of, even when connected to a vacuum pump, extending a lifetime of an electrode of a plasma torch. In the plasma device according to the present inventive concept, since an orifice is installed in a connection unit for connection with a vacuum pump to prevent a decrease in pressure of the vacuum pump, a pressure of a plasma reaction unit including the plasma torch of the plasma device can be maintained similar to normal pressure, thereby reducing the wear of a tungsten electrode in the plasma torch to extend a lifetime of the electrode.

The application provides a production process of a vitamin B6 intermediate N-ethoxyoxalyl-L-alanine ethyl ester and belongs to the technical field of compound synthesis. Alanine 1 and oxalic acid diethyl ester 2 are stirred under heating at 110 DEG C for 15-20 hours, and the reaction solution is completely dissolved. 80% of product 4 is generated, and 20% of intermediate product 3 is generated. The intermediate product 3 is subjected to hydroxyl esterification by adding a catalyst (concentrated phosphoric acid) and anhydrous ethanol to generate the product 4. The route generates most of the product through acylation reaction, and a small amount of intermediate is subjected to esterification reaction to generate the product. The application has the advantages of short reaction time, high production efficiency and the like, and does not need harmful benzene as a solvent.

The invention discloses a pre-crystallization synergetic solid-phase tackifying energy-saving method, and relates to the technical field of solid-phase tackifying, and the method comprises the following steps: raw material pretreatment and pre-crystallization preparation; the pretreated base material is fed into a pre-crystallization device, pre-crystallization treatment is completed according to preset parameters, and the crystallinity and the water content are monitored synchronously; transferring the pre-crystallized base material into a solid-phase tackifying reactor, gradually heating to a target tackifying temperature by adopting a gradient heating mode, and simultaneously controlling the vacuum degree and inert gas atmosphere in the reactor to create conditions for molecular chain segment diffusion and polycondensation reaction; collecting viscosity data in real time through an online viscosity monitoring system, and dynamically adjusting the heating rate and the vacuum degree in combination with pre-crystallization effect feedback; and carrying out gradient cooling shaping on the tackified base material. By constructing an integrated process system and quantitatively controlling the crystallinity uniformity and the condensation polymerization process, the performance uniformity of a finished product and the process controllability are improved while the solid-phase tackifying activation energy is reduced, the energy-saving effect is improved, and the period is shortened.

The invention discloses a method and device for preparing diammonium alginate. The method and device are used for improving the nutrient content and quality of diammonium alginate. The method comprises the following steps: conveying an alginic acid solution to a mixing tank, and stirring the alginic acid solution at a stirring speed of 200-300 revolutions per minute; the stirred alginic acid solution is conveyed to an acid preparation tank, the stirred alginic acid solution and acid preparation materials are mixed, acid preparation slurry is obtained, and the acid preparation materials comprise, by weight, 550-650 parts of raffinate acid, 80-120 parts of clear acid and 5-10 parts of sulfuric acid; the acid preparation slurry is conveyed to a tubular reactor and mixed with ammonia through the tubular reactor according to preset tubular reactor parameters, a mixed material is obtained, and the preset tubular reactor parameters comprise the reaction temperature of 120-150 DEG C and the reaction pressure of 0.5-0.7 megapascal; and conveying the mixed material to an ammoniation granulator for granulation to obtain diammonium alginate particles with the mass fraction of not less than 57%.

The invention discloses a method and a device for synthesizing lithium sulfide with a controllable particle size. The method comprises the following steps: S1, dissolving lithium sulfide; performing evaporation concentration and low-temperature drying to obtain a lithium hydrosulfide powder raw material; s2, introducing high-purity hydrogen sulfide gas into a crushing and mixing chamber, and further crushing and fully mixing under strong impact of high-speed jet flow; s3, performing vulcanization reaction through the fluidized bed reaction chamber to obtain high-purity lithium sulfide particles; and S4, after synthesis is completed, transferring into a glove box. Compared with the prior art, the method disclosed by the invention has the advantages that the ethanol is adopted as a solvent, the uniformity of a lithium sulfide initial blank shell can be ensured to the greatest extent through a recrystallization method, and the high-quality lithium sulfide with controllable particle size can be obtained more quickly by accurately controlling the pressure of high-speed jet flow and regulating and controlling the particle size of a precursor material through the crushing and mixing chamber; the purity is higher, the particle size distribution is more uniform, the operation process is simple, convenient and feasible, and the method is suitable for large-scale industrial production.

The invention discloses 2-methyl-4-chlorophenoxyacetic acid esterification dehydration equipment and a synthesis method, belongs to the technical field of chemical engineering, and solves the problems that when 2-methyl-4-chlorophenoxyacetic acid isooctyl ester is synthesized in the prior art, a catalyst seriously corrodes production equipment, the service life of the equipment is shortened, and the product quality is affected due to the fact that the catalyst is left in a product. The method comprises the following steps: respectively adding 2-methyl-4-chloro-phenoxyacetic acid and isooctyl alcohol into a negative pressure reaction kettle, starting the negative pressure reaction kettle, discharging distilled water through a fraction discharging assembly, and obtaining 2-methyl-4-chloro-phenoxyacetic acid isooctyl ester when no fraction flows out of gas-phase isooctyl alcohol in the negative pressure reaction kettle; in the invention, during synthesis of 2-methyl-4-chloro-isooctyl, a catalyst is not needed to catalyze a raw material reaction, a catalyst-free esterification dehydration method is adopted, a negative pressure forced distillation technology is combined, water generated in the reaction is efficiently removed, and the reaction conversion rate and the product yield are remarkably improved; the problems that the catalyst corrodes reaction equipment and the residual catalyst in the product affects the purity and performance of the product are avoided.

The invention relates to the technical field of food processing, and discloses a production system and method of syrup special for chewing gum and a product. The production system comprises a size mixing tank, a jet acidolysis device, a flash evaporation cooling device, a neutralization decoloring tank, an ion exchange refining system and an evaporation concentration device which are connected in sequence. The method comprises the following steps: adjusting the pH value of corn starch powder slurry to 1.5-1.8; continuously reacting for 7-10 minutes at the temperature of 130 DEG C and the pressure of 0.3 MPa through an ejector, and controlling the DE value to be 43-46; neutralizing and decolorizing after flash evaporation and cooling; refining with an ion exchange system containing deodorizing resin until the pH value is 5.0-6.0 and the conductivity is less than or equal to 15 [mu] S / cm; and finally concentrating to obtain a product. The hydrolysis and refining processes are accurately controlled, so that the obtained syrup has specific sugar composition, the sweetness durability and toughness of the chewing gum can be remarkably improved, and the chewing gum is particularly suitable for specific market requirements. The system is continuous, the controllability is high, and the product quality is stable.

An aromatic branched polycarbonate, wherein the aromatic branched polycarbonate has prescribed repeating units in a main chain and a branch chain, contains one or more prescribed branching structures in the main chain and the branch chain, a ratio of a total amount of substance of the branching structures with respect to an amount of substance of the prescribed repeating units is within a prescribed numerical range, the aromatic branched polycarbonate contains one or more prescribed oligomers, a total mass of the oligomers is within a prescribed numerical range, and a ratio of an amount of substance of an oligomer of a specific structure with respect to a total amount of substance of the oligomers is within a prescribed numerical range.

The invention relates to the technical field of polyamide production, in particular to a rotary drum reaction device and a production method of nylon 46. The rotary drum reaction device comprises a rotary drum reaction kettle and a nitrogen purging pipe, the rotary drum reaction kettle is provided with a reaction cavity, the nitrogen purging pipe comprises a purging pipe section which is arranged in the reaction cavity and is close to the inner wall of the reaction cavity, the rotary drum reaction kettle and the purging pipe section can rotate relatively, and when the rotary drum reaction kettle rotates, the nitrogen purging pipe section is communicated with the purging pipe section. The inner wall of the reaction cavity can rotate relative to the purging pipe section, so that the purging pipe section can scrape materials on the inner wall of the reaction cavity; a purging hole is formed in the purging pipe section, and nitrogen in the purging pipe section can enter the reaction cavity from the purging hole. The drum reaction device is used in the production method of the nylon 46. The invention provides a rotary drum reaction device and a production method of nylon 46, and aims to solve the technical problem that materials are easily adhered to the inner wall of a rotary drum reaction kettle in the reaction process in the prior art.

The invention discloses a fusion reactor tungsten-based dust tritium removal device, and relates to the technical field of nuclear fusion, tungsten-based dust is preheated and degassed by a preheating degassing vacuum chamber, the tungsten-based dust is smelted into tungsten-based liquid by a smelting vacuum chamber, and the tungsten-based liquid is cooled into solid by a cooling vacuum chamber; the common manifold is communicated with the vacuum extraction mechanism, the preheating and degassing vacuum chamber, the smelting vacuum chamber and the cooling vacuum chamber, so that the vacuum extraction mechanism extracts gas in the preheating and degassing vacuum chamber, extracts gas in the smelting vacuum chamber and extracts gas in the cooling vacuum chamber; the vacuum extraction mechanism is used for communicating with the recovery mechanism to enable extracted gas to flow into the recovery mechanism, the detection mechanism is used for detecting tritium parameters of gas flowing to the vacuum extraction mechanism in the public manifold, and the controller is configured to control the preheating degassing vacuum chamber and the smelting vacuum chamber to work according to the tritium parameters. Therefore, leakage risks and potential safety hazards of tritium and radioactive activation products can be reduced.

This invention relates to the field of chemical production technology and discloses an apparatus and method for the large-scale production of boron nitride nanomaterials. The apparatus includes a vacuum chamber, a cooling water circulation system, a vacuum pumping system, an exhaust system, a gas path, an automatic stirring device, a material reaction container, and a heating device. The automatic stirring device controls the mixing and stirring of the materials. The material reaction container is connected to multiple evenly distributed air inlets. The heating device surrounds the material reaction container and controls the reaction temperature. This invention improves the thermal treatment effect and chemical reaction efficiency of the raw materials in the gas by equipping the material reaction container with an automatic stirring device and multiple densely distributed air inlets, effectively increasing the quality and quantity of materials processed per batch and improving the production efficiency of boron nitride nanomaterials. The apparatus is simple, has low manufacturing cost, and is easy to scale up; the production method is simple, energy-efficient, and pollution-free, meeting the needs of large-scale preparation of boron nitride nanomaterials.

The invention discloses high-purity silicon powder production equipment and a using method thereof.The high-purity silicon powder production equipment comprises a vacuum furnace chamber, a transmission system, a material loading system, a laser heating system, a cooling system and a powder collecting system.The right upper portion of the vacuum furnace chamber is provided with a laser connecting port, and the laser connecting port is fixedly connected with the laser heating system; a transmission system is fixedly installed on the lower end face of the vacuum furnace chamber, the output end of the transmission system extends into the vacuum furnace chamber, the transmission system is fixedly connected with a material loading system, a discharging port is fixedly formed in the side wall of the vacuum furnace chamber and fixedly connected with a cooling system, and the other end of the cooling system is fixedly connected with a powder collecting system. Silicon liquid evaporation is carried out in a direct laser heating mode, the positions of laser and the liquid level are maintained through the transmission system, meanwhile, the transmission system drives the silicon liquid to rotate so that the temperature in the silicon liquid can be uniform, gaseous silicon is condensed through the cooling system, follow-up recovery is facilitated, and the preparation efficiency of high-purity silicon powder is improved.

The invention belongs to the technical field of supramolecular structure chemistry, and provides a synthesis method of a one-dimensional polyamide material for capturing alkali metal ions. According to the method, in an ultra-vacuum environment, 4, 5 '-diaminobenzo-18-crown-6 (trans) (4, 5'-diaminobenzo-18-crown-6) molecules and 4, 4 '-biphenyldicarboxaldehyde (4, 4'-Biphenyldicarboxalde) molecules are deposited on the surface of a metal single crystal in a thermal evaporation mode, the two molecules are assembled on the metal surface, and after annealing is conducted at the temperature of 140 DEG C, an aldehyde-amine condensation reaction is conducted, so that the metal single crystal is obtained. And finally, the one-dimensional polyamide material with a specific molecular structure is formed. Subsequently, an alkali metal salt is deposited into the material, and the alkali metal salt can be deposited into a crown ether cavity so as to be captured by 4, 5 '-diaminobenzo-18-crown-6 (trans) molecules, so that effective fixation and storage of the polyamide material on alkali metal ions are realized.

The invention discloses a multistage circulating rubber devolatilization device and method based on microwave-infrared coupling heating, and belongs to the technical field of high polymer material processing. The device comprises a quartz glass tank body, a metal microwave shielding cavity, a microwave generator, an infrared lamp tube, a multi-stage falling strip distributor and a bottom direct connection screw pump. According to the method, the rubber melt is directly heated by microwave volume heating, and surface temperature drop is compensated by infrared radiation, so that rubber thermal crosslinking coking caused by traditional wall surface heating is avoided. According to the device, an intermittent circulation process is adopted, and a rubber solution forms falling strips matched with rheological properties of the rubber solution in different devolatilization stages through on-line switching of thick-hole, middle-hole and micro-hole distributors and matching of gradient regulation and control of vacuum degree and temperature. And the wide-mouth screw pump at the bottom realizes zero liquid holding direct discharge and eliminates flowing dead angles. According to the method, efficient and mild devolatilization of the high-viscosity heat-sensitive synthetic rubber is effectively achieved, the final volatile component content can be stably controlled to be 500 ppm or below, and obvious thermal crosslinking does not occur to the product.

The application provides a preparation device and a preparation method of a silicon monoxide negative electrode material. The preparation device comprises, in sequence along a material flow direction, a vacuum heating assembly, a heating deposition assembly, a crushing and screening assembly, a carbon-coated heating assembly and a pre-lithium assembly. The heating temperature of the vacuum heating assembly is higher than the heating temperature of the heating deposition assembly. The preparation device of the silicon monoxide negative electrode material provided by the application is based on high-temperature vacuum evaporation in the vacuum heating assembly and the heating deposition assembly, crushing and screening in the crushing and screening assembly, chemical vapor deposition in the carbon-coated heating assembly and gas-phase pre-lithium in the pre-lithium assembly. The silicon monoxide negative electrode material with excellent performance is prepared, and a process system solution for preparing the silicon monoxide negative electrode material can be formed by the preparation device.

This invention relates to a reaction apparatus and method for preparing magnesium hydroxide flame retardant using a gas-phase method, belonging to the field of chemical engineering equipment and inorganic non-metallic material preparation technology. The reaction apparatus includes a precursor precision delivery system, a multi-temperature zone laminar flow reaction system, a high-efficiency particle collection system, and a central process control system. The method utilizes the precursor precision delivery system to provide gas-phase flows of magnesium source precursor, hydrolysate, and surface modifier, which are introduced into the multi-temperature zone laminar flow reaction system via three coaxial laminar flow nozzles, where controlled mixing is sequentially completed in the preheating mixing zone. This invention is carried out entirely in a low-pressure laminar flow environment in the gas phase, effectively avoiding particle agglomeration. The prepared magnesium hydroxide flame retardant exhibits uniform primary particle size, good dispersibility, and a high degree of surface organication, significantly improving its compatibility and flame retardant efficiency in a polymer matrix.