364 results about "Vacuum evaporation" patented technology

The utility model belongs to the technical field of vacuum evaporators, and discloses a crystal oscillator probe structure which comprises a crystal oscillator water pipe, a probe assembly is arranged at the bottom of the crystal oscillator water pipe, an installation structure is arranged on the inner wall of the probe assembly, and a driving assembly located outside the probe assembly is arranged at the top of the installation structure. A clamping structure is arranged in the probe assembly, the probe assembly comprises a mounting frame, and a detection head is movably sleeved with the mounting frame. According to the utility model, the detection head and the connecting plate are arranged, the reverse rotating block is rotated, and the whole detection head is limited through the clamping block, so that the screw rod is screwed out of the detection head, and the connecting plate, the protection plate, the limiting frame and the supporting frame are driven to move upwards and a wafer in the limiting frame is driven to move out of the mounting frame through the elastic force of the spring I; therefore, the wafer can be conveniently replaced by an operator, and the replacement efficiency of the wafer is improved.

The invention provides a preparation method of a multilayer film plane window reflector film system, which adopts a vacuum evaporation method, the structure of the film system is G (Hf-SiO2) n (A), a reflecting film takes HfO2 as a high-refractive-index material and takes SiO2 as a low-refractive-index material, and the HfO2 layer is completed by evaporating Hf deposition in an oxygen-containing vacuum environment. According to the method disclosed by the invention, the TOLLING value parameters are captured for multiple times in stages in the coating process, so that the performance of the prepared plane window reflecting mirror can be remarkably improved, the plane window reflecting mirror is closer to a design value, and the method has important application in preparation of a high-performance beam splitting film.

The invention relates to the technical field of organic light-emitting device production process data processing, and provides an organic light-emitting device production process optimization method, which comprises the following steps of: monitoring key parameters in an evaporation cavity in real time, analyzing data in a cleaning treatment process by utilizing a preset statistical algorithm, and optimizing the production process of an organic light-emitting device. And extracting feature data influencing the surface cleanliness and flatness of the substrate. And then, establishing a mathematical model in the vacuum evaporation process, and solving by applying an optimization algorithm to obtain a parameter combination which enables the performance of the device to be optimal. Furthermore, electrical and optical performance and life stability data of the device are collected, and optimization parameters are simulated, calculated and optimized through a data processing model. In the production process, equipment operation data are collected in real time, optimization parameters and real-time data are compared, and the parameters are optimized in real time through a stochastic gradient descent method and stored in a knowledge base. The device performance and the production efficiency are effectively improved, and the production cost is reduced.

The invention provides a novel vacuum evaporator which comprises a vacuumizing system, a carrier rotating system, a light-operated integrated system, a crystal oscillation system, a heating system, a water cooling system and an evaporation system, and the light-operated integrated system and the crystal oscillation system are arranged in a hollow cavity of a first rotating mechanism, so that cooperative work of rotary coating and real-time detection is realized; a detection light path is shortened, and the signal-to-noise ratio is improved; rotation axis detection ensures data representativeness; the top radiation heating and the side wall conduction heating have a synergistic effect, so that the surface temperature difference of the substrate is smaller than + / -1.5 DEG C, the cooling efficiency of the evaporation system is improved by 40% through the water cooling system, the equipment is highly integrated through the modular architecture design, and the space is saved by 30% through the coaxial design of the carrier rotating system and the detection system; a rotating system, a heating system and a detecting system are cooperatively controlled, a dynamic compensation algorithm automatically adjusts the evaporation rate and the carrier rotating speed by comparing light control data with crystal oscillator data in real time, the film thickness control precision is + / -2 nm, and the refractive index deviation is smaller than 0.5%.

The technical scheme of the utility model discloses a heat source tower solution concentration maintaining and adding device which comprises a refrigeration compressor, a coil pipe type evaporation heat exchanger, an air cooler, a condenser and a gas-liquid separator which are sequentially connected, and a hot gas bypass electromagnetic valve is arranged between an inlet of the refrigeration compressor and an inlet of the condenser. The coil pipe type evaporation heat exchanger is arranged in the vacuum evaporation tank, and an outlet of the solution tank is sequentially connected with the liquid supplementing electromagnetic valve, the heat recovery plate type heat exchanger and a liquid inlet of the vacuum evaporation tank; a steam outlet of the vacuum evaporation tank is sequentially connected with a condenser and a purified water tank; an air outlet of the vacuum evaporation tank is connected with the purification water tank, the purification water tank is connected with a gas inlet of the vacuum ejector, and a liquid inlet and a mixed liquid outlet of the vacuum ejector are connected with the circulating water tank; an evaporation coil I is arranged in the circulating water tank, and an evaporation coil II is arranged in the purification water tank, so that the integration of low-temperature evaporation of the solution, system liquid supplement and solution recovery is realized, the solution purification efficiency is high, and the energy consumption is low.

The vacuum evaporation equipment comprises a vacuum process chamber, the vacuum process chamber comprises a top cover, a crystal oscillator probe and a rotating mechanism are arranged on the top cover, the rotating mechanism is connected with a film coating umbrella, a plurality of substrates to be coated are arranged on the film coating umbrella, a through opening is formed in the side face of the vacuum process chamber, and a mounting channel is fixed in the through opening; an adjusting structure is arranged in the mounting channel in a penetrating manner, the end part of the adjusting structure is connected with a correction plate structure, the adjusting structure comprises a cylinder body, the cylinder body is connected with a transmission body, the end part of the transmission body is provided with a revolute pair, the rotating mechanism comprises a fixed cylinder, a motor and a sleeve, a rotating cylinder is rotationally arranged in the fixed cylinder, and the top end of the rotating cylinder is sleeved with a gear ring; and the bottom end of the rotating shaft is connected with a gear, the gear is meshed with the gear ring, and the top end of the rotating shaft penetrates through the transmission assembly and is connected with the transmission assembly, and the top end of the rotating shaft is connected with an encoder. The device has the advantages of being good in film coating effect, high in film coating efficiency and controllable in film coating process.

The invention belongs to the field of photoelectric device display, and particularly relates to an intrinsic stretchable electroluminescent device and a preparation method and application thereof. The intrinsic stretchable electroluminescent device is composed of an intrinsic stretchable transparent substrate, an intrinsic stretchable transparent anode, an intrinsic stretchable hole injection / transmission layer, an intrinsic stretchable luminescent layer, an intrinsic stretchable electron injection / transmission layer, a metal cathode and liquid metal. Each layer is prepared independently, the liquid metal is deposited on the metal cathode through blade coating, spraying, dispensing printing and the like, and the other layers are deposited into a film through a solution method or a vacuum evaporation method; in the preparation process, the intrinsic tensile property of the device can be realized without special structures (such as wrinkles, island bridges, snakelike, paper-cut and the like), and the method has the advantages of simple process, low cost, wide application range and universality.

The invention relates to the technical field of electroluminescent devices, in particular to a large-current quantum dot electroluminescent device and a preparation method thereof. The device comprises a substrate, a cathode, an electron transport layer, a quantum dot light-emitting layer, a current focusing layer, a hole transport layer, a hole generation layer and an anode which are tightly stacked in sequence, the current focusing layer is provided with a slit which is used for regulating and controlling the injection path of hole current to the quantum dot light-emitting layer and improving the bearable current density threshold value of the device. The material of the current focusing layer is one or more of lithium fluoride, magnesium fluoride and aluminum oxide; and the hole generation layer is used for efficiently enhancing hole injection. The invention further provides a preparation method for preparing each layered structure through spin coating and vacuum evaporation deposition. The electroluminescent device has the advantages that the hole generation layer and the current aggregation layer are utilized to construct the electroluminescent device capable of realizing large-current driving, the problem that carrier injection in the device under large-current driving is limited is solved, and the current tolerance and the luminous intensity of the device are effectively improved.

The utility model discloses a switching mechanism and a device for hanging a substrate in an evaporation cavity, and relates to the field of vacuum evaporation equipment, the switching mechanism comprises an evaporation machine shell and a sealing cover which is hinged and assembled on the side surface of the evaporation machine shell and plays a role in sealing, a hanging disc is concentrically assembled in the evaporation machine shell, and the hanging disc is positioned at the upper part in the evaporation machine shell. According to the utility model, through the cooperation of the first adsorption suspension part, the second adsorption suspension part and the switching unit, the substrate can be fixed below the first adsorption suspension part for single-side evaporation treatment, and then the substrate is transferred below the second adsorption suspension part under the control of the switching unit; and in the transferring process, the base plate can be turned over, that is, double-sided evaporation treatment can be carried out under the condition that the evaporation machine is not stopped.

The invention discloses a perovskite photovoltaic device and a preparation method and application thereof, and the preparation method of the perovskite photovoltaic device comprises the following steps: dissolving heterocyclic molecules in a solvent, stirring and dissolving to prepare an interface dipole material, spin-coating the interface dipole material on a hole transport layer, and annealing to form an interface dipole layer, a perovskite material is spin-coated through an anti-solvent method and annealed to form a perovskite film, and then an electron transport layer and a metal electrode are subjected to vacuum evaporation to obtain the perovskite photovoltaic device. Wherein the heterocyclic molecules are one or two of pyridine hydriodate, morpholine hydriodate or pyrrole hydriodate. The perovskite photovoltaic device prepared by the invention has high energy conversion efficiency.

The utility model discloses a low-temperature vacuum evaporation concentration system, which relates to the technical field of chemical equipment and comprises a treatment tank, a cleaning component is arranged in the treatment tank, and a lifting component is arranged at the top end of the cleaning component; the cleaning assembly comprises a top cover, a rotating pipe sleeve is rotationally installed at the top end of the top cover, the bottom end of the rotating pipe sleeve penetrates through the top end of the top cover, the outer surface wall of the rotating pipe sleeve is fixedly sleeved with a first gear, and two telescopic rods are fixedly installed at the bottom end of the first gear; the telescopic ends of the two telescopic rods are fixedly provided with a connecting ring, and the inner wall of the connecting ring is fixedly provided with a cleaning pipe. The cleaning assembly can make the cleaning pipe rotate, impact cleaning can be conducted on the inner wall of the treatment tank from different angles, the lifting assembly can make the cleaning pipe ascend and descend within a certain range, the inner walls, at different heights, of the treatment tank are cleaned, and the cleaning effect on the treatment tank is improved through mutual cooperation of the cleaning assembly and the lifting assembly.

The invention discloses a movable regulation and control type rotating mechanism for a vacuum evaporator, and belongs to the technical field of vacuum evaporators, the movable regulation and control type rotating mechanism comprises a supporting column and a transmission gear mounted in the supporting column, the side edge of the transmission gear is in meshed connection with a linkage gear, the linkage gear is in key connection with a power rod, a positioning sleeve is fixed on the power rod, and the positioning sleeve is in key connection with the linkage gear. And the circumferential direction of the positioning sleeve is connected with a limiting ring through a rotating arm, a clamping ring is embedded in the limiting ring, and the clamping ring is fixed in the vacuum evaporator. According to the movable regulation and control type rotating mechanism for the vacuum evaporator, by arranging the hanging piece capable of being movably adjusted at the bottom, the position of the hanging piece can be conveniently adjusted according to plating pots with different diameters, so that the hanging piece is suitable for installation of the plating pots with different sizes, and meanwhile, the water cooling assembly is arranged in the rotating arm and used for cooling the rotating arm; and the probability of uneven deformation of the rotating frame due to heating is reduced.

The invention discloses a functional current collector capable of improving rate capability and a preparation method thereof, and relates to the technical field of functional current collectors. Nano cellulose is modified, and the modified nano cellulose is added in the process of preparing the high-rate-performance functional current collector, so that the mechanical property of the high-rate-performance functional current collector is enhanced, and the electrical conductivity is improved; aluminum oxide, metal aluminum and aluminum oxide are sequentially deposited in cooperation with vacuum evaporation to serve as insulating materials, an electronic insulating barrier can be provided, short circuit is prevented, chemical stability is kept in the high-temperature and high-pressure environment, and the hardness and abrasion resistance of the film are enhanced; the surface of a high polymer material is generally non-polar and inert and has great difference with the chemical property of metal aluminum, and an aluminum oxide bottoming mode is used for performing interface optimization on a subsequent evaporation aluminum layer, so that the layering risk is reduced; the metal aluminum is an excellent conductor, the resistance of the current collector is remarkably reduced, the requirement of high-rate charging and discharging is met, the aluminum density is low, the weight of the battery can be reduced, and the energy density is improved.

The invention relates to a novel Piston manufacturing process, which belongs to the field of filter devices, and specifically comprises the following steps of: S1, providing a substrate and cleaning to prepare for subsequent photoetching; s2, IDT photoresist coating, exposure and development are carried out, and PR glue presents a corresponding interdigital morphology; s3, depositing an IDT metal layer; s4, continuously coating, exposing and developing a second layer of photoresist on the IDT metal layer, and forming a strip-shaped morphology containing a Piston structure at the tail end of an IDT interdigital; step S5, depositing a Piston metal layer; and step S6, a Lift-off process is adopted, and an IDT-Piston projection structure is formed. According to the invention, the Piston metal is evaporated in vacuum, the integration of the IDT-Piston bulge structure is directly realized in the vertical direction, the process flow is simplified, the cost is saved, and the performance of the filter is improved.

The invention discloses a preparation method of an easy-to-demold concrete test mold with super-hydrophobic and super-smooth inner wall, and belongs to the field of concrete test molds. The method comprises the following steps of: a, spin-coating negative photoresist, and obtaining a substrate with an inverted trapezoidal micron structure on the inner wall in an ultraviolet lithography manner; b, depositing a metal layer through vacuum evaporation; c, removing the metal layer on the upper surface of the inverted trapezoidal micron structure on the inner wall of the substrate; d, obtaining a micro-nano hierarchical structure on the metal layer; e, spin-coating molten wax, and after cooling, filling the micron-sized pores with solid wax; f, depositing aluminum through vacuum evaporation, and performing anodic oxidation to obtain a porous metal aluminum surface; g, solid wax is discharged, lubricating oil is injected, the whole pores are filled with the lubricating oil, and the super-hydrophobic and super-smooth surface is obtained; and h, splicing the base to obtain the easy-to-demould concrete test mould with super-hydrophobic and super-smooth performance. The cohesiveness of the concrete and the inner wall of the test mold is reduced, so that the concrete is easily separated from the inner wall of the concrete test mold.

A waste triethylene glycol purification and recycling device relates to the technical field of triethylene glycol purification devices and comprises a triethylene glycol vacuum evaporation tank, a primary condenser, a secondary condenser, a condensation storage tank, a gas-liquid separation tank and a vacuum pump, a steam outlet pipeline A is arranged at the upper end of the triethylene glycol vacuum evaporation tank and communicated with an inlet of the primary condenser, and a steam outlet pipeline B is arranged at the lower end of the steam outlet pipeline A; triethylene glycol steam is condensed into liquid through the first-stage condenser, an outlet of the first-stage condenser is communicated with the condensation storage tank, a steam outlet pipeline B is arranged on the upper portion of the condensation storage tank and communicated with an inlet of the second-stage condenser, and gaseous triethylene glycol steam is condensed into liquid through the second-stage condenser. An outlet of the secondary condenser is communicated with a gas-liquid separation tank; the upper part of the gas-liquid separation tank is communicated with a vacuum pump; the vacuum degree of the triethylene glycol vacuum evaporation tank is 4KPa, and under the vacuum degree, the boiling point of triethylene glycol is lower than 200 DEG C and lower than the theoretical decomposition temperature of 208 DEG C, so that purer triethylene glycol can be obtained and reaches the recycling standard.

This invention proposes an integrated vacuum pumping system for the exterior of a vacuum evaporation machine, comprising a coarse pumping pipe and a fine pumping pipe. A first three-way pipe and the fine pumping pipe are connected by a telescopic motor that drives the valve cover to rise and fall, enabling rapid switching between the coarse and fine pumping lines and avoiding vacuum fluctuations. Under the precise pressure control of the telescopic motor, the valve cover maintains uniform contact pressure on the sealing surface. The transition pipe directly connects the coarse and fine pumping pipes, eliminating flow channel redundancy in traditional multi-valve systems and reducing gas flow resistance. The telescopic motor is linked with a vacuum sensor to automatically switch the pumping mode based on the cavity pressure threshold, avoiding errors caused by manual intervention. The integrated three-way pipe reduces external connecting components, shrinks the equipment size, and lowers manufacturing costs and maintenance complexity.

The crucible for vacuum evaporation comprises a crucible main body and a crucible cover body, the crucible cover body covers the crucible main body, the crucible cover body comprises a left side cover and a right side cover, the left side cover is fixedly connected with the right side cover, and the left side cover and the right side cover are oppositely arranged left and right. A spacing area is arranged between the left side cover and the right side cover and is positioned in the middle of the crucible cover body. The crucible main body is used for placing the to-be-plated material, and the left side cover and the right side cover cover the part of the crucible, so that during heating, the pressure in the crucible is increased, the pressure borne by the to-be-plated material in the crucible is increased, and the evaporation material evaporated in the crucible rushes out of the spacer region and collides with an evaporation target object at a higher acceleration; and the binding force between the evaporation target object and the to-be-plated material is larger.

The present application relates to the technical field of organic optoelectronic materials and devices, in particular to a preparation method of white organic light-emitting diodes based on a kind of blue, yellow and other color cMa copper (I) TADF complex with nitrogen heterocyclic carbene-copper-arylamines structure, including three steps: first, synthesis of cMa type copper (I) TADF complex containing blue light emitter and yellow light emitter as representative, obtained by ligand selection, intermediate preparation and purification;Second, construct layered WOLEDs device, from bottom to top in turn for substrate, ITO anode, hole injection layer, hole transport layer, buffer layer, yellow light emitting layer, blue light emitting layer, electron transport layer, electron injection layer and Al cathode;Third, through substrate pretreatment, mbar high vacuum evaporation and nitrogen glove box packaging complete device preparation.The WOLEDs device W1, W2 prepared by the present application has excellent photoelectric performance, the CRI is up to 83, the maximum external quantum efficiency is greater than or equal to 13.3%, has good stability and low cost, and is suitable for lighting and display fields.

Techniques are described herein for using a high-pressure reactor to separate clean water from dirty water without filtration and to extract and concentrate contaminants from dirty water for use as a fuel. In particular, techniques and systems are described for separating water from hydrocarbon contaminates, other BTU-laden compounds, and dissolved minerals, while also boiling water and condensing the resulting steam into distilled water. In addition, system in which the described techniques are performed can be used as a high-pressure pump for moving the separated hydrocarbon contaminates forward into other processes, such as a high-pressure reactor or incinerator.

The application provides a carbon nanotube composite charge generation layer, a preparation method thereof and application of the carbon nanotube composite charge generation layer in a laminated OLED device. The preparation method comprises the following steps: placing a ferrous oxide loaded carbon nanotube composite material in a solvent to obtain a solution, spraying the solution on a substrate surface, drying to obtain a modified base film; placing the modified base film in a magnetic field with a fixed direction and a fixed frequency to obtain a modified base film with oriented arrangement of carbon nanotubes; and preparing the carbon nanotube composite charge generation layer by using a high-vacuum evaporation method. Compared with the prior art, the carbon nanotube material with regular arrangement is obtained, the axial conductivity of the carbon nanotube material is far higher than the radial conductivity, the traditional evaporation process is used, the CGL is prepared on the carbon nanotube layer with regular arrangement by the thermal evaporation method, and therefore the electrical crosstalk (lateral conductivity) of the CGL is reduced, and the performance of the laminated OLED device is improved.

This invention proposes a double-layer sealing door device for an ultra-high vacuum evaporation coating machine, including a processing chamber. A sealing door is provided on the outer side of the processing chamber, and the two are connected by a hinge assembly. A sealing area is provided on the outer end face of the processing chamber, and at least one evacuation hole is opened in this area. An inner sealing ring and an outer sealing ring are arranged sequentially on the inner side of the sealing door. When closed, the inner and outer sealing rings simultaneously press against the sealing area to form an annular vacuum chamber. The evacuation hole is located inside the vacuum chamber and is used to independently evacuate the chamber to form a secondary seal. Through the coordinated design of the inner and outer double sealing rings and the vacuum chamber, a transition vacuum zone is constructed between the sealing door and the processing chamber, making the pressure difference between the inside and outside of the door approach zero, significantly reducing the stress deformation of the sealing rings and extending their service life. At the same time, the double vacuum barrier greatly reduces the leakage rate of the main chamber and improves the sealing reliability.

The utility model relates to vacuum evaporation equipment for semiconductor film production, which is applied to the field of semiconductor film production and comprises a vacuum box, the front end of the vacuum box is rotatably connected with a sealing door, the upper end of the vacuum box is fixedly connected with a motor, and the output end of the motor movably penetrates into the vacuum box and is fixedly connected with a mounting block. A mounting rod is arranged in the mounting block, the lower end of the mounting rod is fixedly connected with an umbrella-shaped jig, a screw rod is arranged on the right side of the mounting block, and the left end of the screw rod sequentially penetrates through the mounting block and the mounting rod in a threaded mode. The evaporation materials can be effectively prevented from being condensed into solids at the outlet, gas flow monitoring is conducted through the gas flow detector nozzle, the pressure sensor can monitor the capacity of the evaporation materials in the crucible, and the capacity of the evaporation materials in the crucible and the blockage condition of the nozzle can be conveniently monitored through matched use of the gas flow detector nozzle and the pressure sensor.

The application belongs to the technical field of photoelectric detectors, and discloses a high-performance two-dimensional perovskite photoelectric detector and a preparation method thereof. First, a SiO2 glass substrate is cleaned, and a precursor solution is dropped on the surface of the glass substrate. Chloroform antisolvent solution doped with ZnO quantum dots is dropped on the precursor solution. Then, ZnO quantum dots / (PEA)2PbI4 nanosheet thin film is formed by spin coating, and the thin film is annealed. The above steps are repeated multiple times to obtain a uniform thin film. The glass substrate with the uniform thin film is plated with gold by a vacuum evaporation method to obtain an electrode. The application improves the carrier migration rate by doping the concentration of ZnO quantum dots, improves the photocurrent size, obtains higher responsivity and detection rate, and shorter response time. The manufacturing process is simple and has strong repeatability. The application has high photocurrent size, high responsivity and high detection sensitivity. The application selects a suitable concentration of ZnO quantum dots. The application can be prepared in an air environment and has strong stability.

The invention relates to the technical field of central air conditioners, in particular to a solar photovoltaic photo-thermal cold storage system and a central air conditioner cold storage method. The cold storage system comprises a photovoltaic photo-thermal assembly; the hot water circulation pipeline is connected with a cooling water channel of the photovoltaic photo-thermal assembly, a cooling water inlet is used for being connected with a building sewage input end, and water in the hot water circulation pipeline can be cooled under the action of building sewage; a water inlet of the vacuum evaporator is connected with a cooling water outlet of the photo-thermal evaporator, an air inlet of the vacuum evaporator is connected with a photo-thermal steam outlet of the photo-thermal evaporator, and the vacuum evaporator can absorb heat of building sewage through vacuum low-temperature evaporation and convey condensate water and residual water; the fire water tank is connected with the condensate water outlet and the residual water outlet of the vacuum evaporator; the air conditioner cold water heat exchanger is installed in the fire water tank, PVT low-grade heat energy can be directly utilized, and a low-energy-consumption system integrating building cold storage and sewage reuse is achieved. The cold storage method is based on the cold storage system.

The utility model relates to the technical field of magnetron sputtering coating, in particular to vacuum evaporation equipment. The vacuum evaporation equipment comprises a feeding cavity, a vacuum transition cavity, a process cavity, a first vacuum pump set and a second vacuum pump set. Wherein the feeding cavity is selectively communicated with the atmospheric environment; the vacuum transition cavity is selectively communicated with the feeding cavity; the process cavity comprises a first evaporation transition cavity, an evaporation process cavity and a second evaporation transition cavity, one end of the evaporation process cavity communicates with the first evaporation transition cavity, the other end of the evaporation process cavity communicates with the second evaporation transition cavity, and the end, away from the evaporation process cavity, of the first evaporation transition cavity selectively communicates with the vacuum transition cavity; the first vacuum pump set is arranged on the first evaporation transition cavity and communicates with the first evaporation transition cavity, and the second vacuum pump set is arranged on the second evaporation transition cavity and communicates with the second evaporation transition cavity. The vacuum evaporation equipment can improve the production efficiency, prolong the service life of the first vacuum pump set and the second vacuum pump set and save the cost.

The invention relates to the technical field of wastewater treatment, and discloses a method for recovering wastewater of a hydrogen peroxide concentration rectifying tower. According to the method, a vacuum evaporation, pervaporation and rectification recovery synergistic process is adopted, gradient utilization of energy is achieved through a heat pump system driven by steam waste heat, and hydrogen peroxide molecules are efficiently and selectively separated through a special composite membrane; the composite membrane is prepared by blending fluoroalkylated polyimide and surface modified titanium dioxide, the synergistic effect is enhanced through molecular structure modification and micro-nano composite, and the pollution resistance and the separation stability of the membrane are remarkably improved; a pervaporation trapped fluid is preheated and then mixed with a raw material liquid for rectification, and deep enrichment and purification of hydrogen peroxide are realized by combining a vacuum low-temperature evaporation technology. According to the method, the hydrogen peroxide component in the wastewater can be efficiently recovered, pollutant emission is greatly reduced, the resource recovery efficiency and the system operation stability are remarkably improved, and the method has outstanding industrial application value.

The invention belongs to the field of polymeric membranes. The invention relates to a low-carbon high-barrier biodegradable composite film and a preparation method thereof, the composite film comprises five layers of films, and the five layers of films sequentially comprise a surface substrate layer, a high-barrier layer, a bonding layer, a transition layer and an inner substrate layer; the high-barrier layer surface is subjected to aluminum oxide vacuum evaporation treatment; the surface base material layer and the high-barrier layer are prepared through double-layer co-extrusion and two-way stretching, and the surface of the high-barrier layer is subjected to vacuum plating; the bonding layer, the transition layer and the inner base material layer are prepared through three-layer co-extrusion and film blowing, and the high-barrier layer surface and the bonding layer surface are subjected to dry compounding and curing to obtain the composite film; the degradable packaging film can effectively overcome the defects that in the prior art, a degradable packaging film is poor in water vapor and oxygen barrier property, transparency is reduced after multiple layers are compounded and the like, and meanwhile compared with a traditional composite film, carbon emission can be reduced by 50% or above.

The utility model discloses a continuous vacuum evaporation device for an anti-fingerprint film. The continuous vacuum evaporation device comprises a vacuum film coating machine body and a film coating main roller of a roll-to-roll vacuum film coating machine, wherein the film coating main roller is arranged in the middle of the vacuum film coating machine body; an evaporation boat is arranged at the bottom position of a coating main roller of the opposite-roll vacuum coating machine, a steel wool rope winding device is arranged on the side face position of a guide wheel, a steel wool rope unwinding device is arranged on the steel wool rope winding device on the right side, and a steel wool rope body is arranged in the middle positions of the steel wool rope winding device, the guide wheel and the evaporation boat. The bottom of the evaporation boat is connected with a power supply connecting power supply, the steel wool rope body also travels in a winding mode according to process requirements, and the fingerprint-proof liquid medicine on the steel wool rope body can be continuously evaporated to the bottom of a coating main roller of the opposite-winding vacuum coating machine under the condition that the evaporation boat is heated. After the device is improved, the roll-to-roll vacuum coating machine can continuously evaporate the anti-fingerprint film for a long time.

This application relates to a layer-by-layer vacuum evaporation device for a crystal tuning fork and its preparation process. The device comprises a frame and a vacuum evaporation chamber mounted on the frame. A evaporation turntable is rotatably mounted in the vacuum evaporation chamber. A plurality of evaporation mounting racks are equidistantly spaced along the circumference of the evaporation turntable. The evaporation mounting racks are rotatably mounted on the evaporation turntable. At least one mask plate is mounted on the evaporation mounting rack, and the mask plate is used to accommodate the tuning fork. The vacuum evaporation chamber has multiple molybdenum evaporation boats located at the center of the evaporation turntable. The molybdenum evaporation boats are used to place and evaporate metal evaporation materials. The vacuum evaporation chamber is provided with a flip assembly. When the evaporation mounting racks pass through the flip assembly, they rotate so that the mask plates pass obliquely over the molybdenum evaporation boats. This application improves production efficiency.