62results about How to "Uneven solution" patented technology

The invention provides a method for determining a mixing ratio, a storage medium and an electronic device, and the method comprises the steps: determining particle attribute parameters of a target material, and obtaining the particle attribute parameters of the target material under the condition of obtaining simulation data corresponding to mixing equipment; determining a first contact parameter of the target material and the mixing equipment based on an equipment intrinsic parameter and a particle attribute parameter in the simulation data, and determining a target mechanical basic model of the target material matched with a motion attribute under the condition that the motion attribute of the mixing equipment input by the target object is received, inputting the particle attribute parameter, the first contact parameter and the target mechanical basic model into a preset engineering application, and setting a particle generation strategy corresponding to the mixing equipment based on the mixing demand of the target object in the preset engineering application to obtain a to-be-operated simulation engineering application file, and operating the to-be-operated simulation engineering application file. And generating the target ratio parameter of each sub-strategy in the particle generation strategy. The problem that the coating is not uniform due to inappropriate ratio in the related technology is solved.

The invention relates to a method and a system for detecting yeast adding uniformity on line. The method comprises the following steps: acquiring data; data processing: performing uniformity evaluation on the obtained data information related to the material; and a mixing scheme is optimized. During data processing, calculating a first uniformity evaluation index by using data which is extracted from the preprocessed image and is related to a first microscopic uniformity indicator; or when the false alarm rate evaluation index related to the first microcosmic uniformity indicator exceeds a preset threshold value, a second uniformity evaluation index is calculated by using data related to a second microcosmic uniformity indicator, so that uniformity evaluation is carried out based on the first uniformity evaluation index and / or the second uniformity evaluation index, the second microcosmic uniformity indicator is a texture feature extracted from an area delimited by taking the first microcosmic uniformity indicator as a center. The system comprises a mixing device, a monitoring module and a central control module, wherein the central control module can evaluate the uniformity of an image related to a material.

The invention discloses an antioxidant carbon aerogel material and a preparation method thereof. The method comprises the following steps: sequentially adding a solvent, a boron-containing modifier and a silicon-containing modifier into phenolic resin for esterification reaction; sequentially curing, drying and carbonizing to obtain boron-silicon modified carbon aerogel; depositing a SiC inner coating on the boron-silicon modified carbon aerogel under the assistance of supercritical CO2; a Zr-Si ceramic oxygen barrier layer and a SiO2 sealing and filling layer are sequentially prepared through a sol-gel method, and the carbon aerogel material with the SiC-Zr / Si-SiO2 composite coating is prepared. The invention also provides the aerogel material prepared by the method, the oxidation resistance of the aerogel material is obviously improved, and the aerogel material can be used for preparing a thermal insulation material applied to the field of high-temperature thermal protection.

The invention relates to a coating method of a ceramic coating for a relief etching pot, and belongs to the technical field of ceramic coatings. The adhesive force of the coating is remarkably improved through the fine sand blasting treatment, nitrogen purging and other pretreatment steps, uniform drying of primer and finish paint is ensured through application of the laser drying method, and the problem that the coating is not uniform possibly caused by a traditional drying method is solved; etching treatment and polishing not only improve the attractiveness of the coating, but also enhance the wear resistance and corrosion resistance of the coating, and baking curing treatment further improves the hardness and chemical resistance of the coating.

The invention provides a curved surface polishing device and a polishing method thereof.The curved surface polishing device is provided with a first platform and a second platform, the first platform and the second platform are oppositely arranged, and the first platform and the second platform are fixedly connected based on at least three hinge assemblies; a grinding wheel driving part and an external controller are arranged on the surface, close to the first platform, of the second platform, the external controller is arranged above the grinding wheel driving part, at least three laser induction sensors and a grinding wheel are arranged on the surface, away from the first platform, of the second platform, and the laser induction sensors are arranged around the grinding wheel. Further, the ground curved surface can be sensed in real time based on the dot matrix laser induction sensor, the controller controls stretching and retracting of the hinge assembly in an online closed-loop mode, self-adaptive adjustment of the curved surface contact angle is guaranteed, and the problems that machining is difficult and quality is poor for different positions and different curvatures of the curved surface in a traditional grinding mode are solved; and meanwhile, universality of multiple machining occasions is achieved, and the machining precision is improved.

The invention discloses an environment semantic enhanced remote sensing archaeological target detection data augmentation method and device. The method comprises the following steps: constructing a remote sensing archaeological original data set; constructing an environment instruction set based on the original data set, and generating a composite image with environment semantics by using a graph-to-graph diffusion model and the environment instruction set; performing random enhancement operation on the original image of the original data set to obtain an enhanced image, and constructing an augmented data set based on the composite image, the enhanced image, the fractal image and the original image; and performing performance evaluation on the augmented data set. According to the method, the quality of the remote sensing archaeological image data set is improved, the model overfitting condition is relieved, and the influence of abnormal data on the model performance is reduced.

The invention provides a high-strength particle reinforced aluminum-lithium-based alloy as well as a preparation process and application thereof. The alloy comprises the following components in percentage by mass: 3.3 to 4.5 percent of Cu, 0.2 to 0.7 percent of Mg, 0.8 to 1.6 percent of Li, 0.2 to 0.8 percent of Ag, 0.2 to 0.6 percent of Mn, 0.01 to 0.2 percent of Zr, 0.2 to 0.6 percent of Zn, 0.1 to 0.8 percent of TiB2 and the balance of Al and inevitable impurity elements. The mass content of Ti is smaller than or equal to 0.15%, the mass content of Si is smaller than or equal to 0.1%, and the mass content of Fe is smaller than or equal The preparation of the aluminum-lithium alloy is realized through a method of combining a mechanical stirring and ultrasonic stirring composite refining process, extrusion / rolling and heat treatment, and the problem of performance reduction caused by TiB2 particle aggregation of the particle-reinforced aluminum-lithium-based alloy is effectively solved, so that the strength of the particle-reinforced aluminum-lithium-based alloy is improved, and the application range of the particle-reinforced aluminum-lithium-based alloy is expanded.

This utility model relates to the field of LED manufacturing, specifically disclosing a dispensing device structure for LEDs, including a dispensing cylinder, a dispensing head, and a top rod. A valve structure is installed inside the dispensing head, comprising a flow-limiting ring, a flow-limiting plate, and a spring. The flow-limiting ring is installed inside the dispensing head, and the flow-limiting plate is located below the flow-limiting ring, with its size corresponding to the size of the inner ring of the flow-limiting ring. A spring slot is provided below the flow-limiting ring, and the spring is installed in the spring slot. A connecting rod is provided on the flow-limiting plate, and the connecting rod is connected to one end of the top rod. The valve structure prevents excess adhesive from flowing below the flow-limiting plate, while the adhesive below the flow-limiting plate is adsorbed onto the inner wall of the dispensing head due to negative pressure. This solves the problem of adhesive sticking or excessive adhesive being dispensed during LED dispensing.

A tool for mounting and dismounting a lower bushing of an epitaxial device, comprising: a main frame, a plurality of telescopic members and a plurality of linkage members; the main frame has a first support part and a second support part oppositely arranged along a first direction, and has a limiting space between the first support part and the second support part for limiting the lower bushing; the plurality of telescopic members are arranged at intervals around the second support part along the first direction, and each telescopic member can be telescoped along a different second direction, the first direction being perpendicular to the second direction; one end of each linkage member is connected with one telescopic member, and the other end is slidingly connected with the main frame; the first support part is provided with a connecting part for connecting with an external lifting device. The present application can avoid the lower bushing from shaking during the mounting process, ensure that the lower bushing in the limiting space always maintains a stable posture during the mounting process, reduce the risk of jam caused by horizontal deviation from the root, improve the mounting stability, and reduce the probability of the lower bushing being broken.

The utility model discloses a washing test machine for simulating washable ultraviolet-proof fabric, and particularly relates to the technical field of fabric detection, the washing test machine comprises a case, a partition plate is arranged in the case, a washing bin is arranged on one side of the partition plate, a machine bin is arranged on the other side of the partition plate, a containing assembly is mounted on the partition plate, and the containing assembly is arranged on the machine bin. A heating plate is arranged at the bottom end of the interior of the washing bin and connected with a heater arranged in the machine bin, a temperature sensor is installed in the middle of one side of the partition plate, a water level sensor is arranged above the temperature sensor, a water inlet is formed in the partition plate and connected with a water pump arranged in the machine bin, and a water outlet is formed in the water pump. A water drainage pipe is arranged at the bottom of the washing bin, supporting legs are installed at the bottom end of the machine box, an upper cover is hinged to the top end of the machine box, a lock catch is arranged between the upper cover and the machine box in a matched mode, and a sealing gasket is arranged at the connecting position of the upper cover and the top face of the washing bin. The water washing device has the advantages of being capable of improving the water washing effect, convenient to operate and observe, stable in water flow and capable of improving the detection efficiency.

The utility model relates to the technical field of plastic egg tray processing, in particular to a rotating mechanism for processing egg trays, which comprises a shell, a motor is mounted in an inner cavity of the shell, a speed reducer is mounted at one end of an output shaft of the motor, and a rotating disc is mounted at one end of an output shaft of the speed reducer; a first support is installed on one side of the shell, a supporting plate is installed in an inner cavity of the first support, a paint spraying pump is installed in an inner cavity of the supporting plate, a paint spraying gun is installed at the bottom end of the supporting plate at the output end of the paint spraying pump, and a material barrel is installed at the top end of the supporting plate at the input end of the paint spraying pump. According to the automatic paint spraying device for the egg trays, automatic speed reduction can be achieved when the egg trays approach the paint spraying gun, paint spraying uniformity is improved, compared with the prior art, the problem that paint is not uniform due to the fact that the paint spraying speed is too high is solved, the paint spraying quality of the egg trays is improved, and the labor intensity of workers is reduced. And secondly, when the egg tray is far away from the paint spraying gun, the rotating mechanism can accelerate operation, and the paint spraying efficiency is improved.

The utility model provides a controllable interval vacuum coating equipment, including vacuum coating machine body, support bottom pole, substrate and coating reactor, be equipped with vacuum sealed chamber in the vacuum coating machine body, the coating reactor fixedly be equipped on the vacuum sealed chamber upper wall. This scheme passes through the dynamic adjustment interval between coating reactor and substrate, effectively avoided the problem that the coating is not uniform caused by fixed interval, in the coating process, can real -time adjustment interval according to the actual situation of the surface of the substrate, ensure that the uniform diffusion of reaction gas on the substrate surface, improve the coating uniformity, this scheme supports the dynamic adjustment of a variety of coating materials and process condition, can satisfy the coating demand of different photovoltaic and semiconductor product, through the change interval and process parameter, can easily realize the coating operation of different film layer thickness, component and structure, improve the process flexibility and adaptability.

The utility model provides an elastic coating machine for waterproof wall coating, which belongs to the technical field of building waterproof construction and comprises a bearing mechanism, a fixing block and an adjusting component arranged on the outer side of the fixing block and used for adjusting a coating angle. The spraying mechanism comprises a pipe body fixedly installed on the outer side of the fixing block. The stirring assembly adopts a combined structure of the spiral stirring blades and the stirring blades, and the design of the tapered blades generates a strong shearing effect, so that cakes and impurities in a coating are thoroughly crushed; an M-shaped scraper of the cleaning assembly synchronously runs along with stirring and continuously scrapes coating deposition possibly formed on the inner wall of the pipe body; the splicing and spraying assembly adopts the design of a ball head pipe and a sealing ball sleeve which can be quickly detached, so that the sealing performance is ensured, and checking and cleaning are facilitated; and blockage is prevented from the source, a convenient checking and cleaning means is provided in the early stage of blockage, it is ensured that paint is conveyed evenly all the time, and the problem of uneven coating caused by blockage is effectively avoided.

The utility model belongs to the production technical field of conductive silver paste, specifically is a resistance detection device, including the detection stage, the detection stage bottom is equipped with the coating movement subassembly, the detection stage top is fixedly connected with the coating table, the detection stage is equipped with the adjustable coating subassembly through the coating movement subassembly, the detection stage top is installed with the fixed frame, the fixed frame top is installed with a plurality of probe detection module, the detection stage is equipped with the blanking component through the coating subassembly, through above -mentioned structure, adjustable coating subassembly will even coating of conductive silver paste on the top of coating table and carry out the setting of resistance detection, constitute conductive silver paste resistance detection structure, has realized the function that even coating of conductive silver paste was detected, solved the problem that manual coating conductive silver paste appeared uneven, improved the accuracy of conductive silver paste resistance detection, reduced the situation that uneven coating of conductive silver paste led to resistance detection data inaccuracy.

The present disclosure belongs to the field of lithium battery technology, and specifically relates to a ferromanganese phosphate precursor, a lithium iron manganese phosphate positive electrode material, and a preparation method and application. The present disclosure utilizes the similar Ksp characteristics of iron phosphate and aluminum phosphate precipitation, and first synthesizes aluminum iron phosphate by coprecipitation, so that the aluminum iron phosphate is evenly mixed, and then uses aluminum iron phosphate and manganese chloride to react to prepare a stable ferromanganese phosphate precursor, and the aluminum chloride generated during the reaction can be directly volatilized. The synthesis route provided by the present disclosure can effectively solve the problem of uneven ferromanganese phosphate precursor caused by directly using manganese phosphate and iron phosphate for coprecipitation. The iron-manganese ratio of the prepared ferromanganese phosphate precursor is closer to the target value, and the specific capacity and cycle performance of the lithium iron manganese phosphate further prepared using the precursor can be effectively improved. The entire process is simple and easy to operate, with low process cost, and has very good prospects for industrial application.

The invention relates to the technical field of liquid crystal screen processing, in particular to a gluing device for LCD liquid crystal screen production, which comprises a bottom frame, a horizontal double-shaft motion platform, a lifting motion platform, a glue feeder, a glue outlet, a placing plate and the like, a horizontal double-shaft motion platform is arranged on the bottom frame; the moving part of the horizontal double-shaft moving platform is fixedly connected with a lifting moving platform; a motion part of the lifting motion platform is fixedly connected with a glue feeder; a glue outlet is formed in the lower end of the glue feeder; the bottom frame is fixedly connected with a placing plate; and a placing groove is formed in the placing plate. Dust, fingerprints or other stains on the side of the liquid crystal screen are wiped through the cleaning roller, hot air exhausted by the first exhaust outlet is used for drying residual cleaning liquid on the liquid crystal screen, meanwhile, the glue outlet follows the rear portion of the cleaning roller to conduct gluing on the side of the liquid crystal screen, and therefore the procedure of cleaning the liquid crystal screen independently is omitted, and the production efficiency is improved. And the procedure of gluing the liquid crystal screen is optimized, and the gluing efficiency of the liquid crystal screen is improved.

The invention relates to the technical field of coal mixing, in particular to a coal mixing device and a using method thereof.The coal mixing device is characterized in that the output end of a coal mixing hopper groove is connected with the input end of a material distributing and mixing mechanism through a conveying belt; the material distributing and mixing mechanism comprises a material distributor, a chute and a reversible belt, the input end of the material distributor is connected with the conveying belt, the output end of the material distributor is connected with the chute, the chute is used for distributing and mixing the blended coal output by the material distributor, and the reversible belt is used for receiving and conveying the distributed blended coal; the crushing and distributing mechanism comprises a crusher and a rotary distributor, the crusher is used for crushing the distributed blended coal and the mixed blended coal, the rotary distributor is arranged below an outlet of the crusher, and the rotary distributor is used for mixing the crushed blended coal; and the conveyor is arranged below the rotary distributor and is used for receiving and conveying the blended coal. The coal blending uniformity is improved, and coal blending and uniform mixing of the same coal type on double stocklines are facilitated.

This utility model belongs to the field of motor manufacturing technology, and particularly relates to a motor rotor impregnation device, including a housing and a fixing frame. The fixing frame is located inside the housing and is immersed in a paint bucket, which is located on the lower inner side of the housing. A rotating frame is rotatably connected to the inner side of the fixing frame, and a drive assembly is driven to the top of the rotating frame. The drive assembly drives the rotating frame to rotate. The axis of the rotating frame is perpendicular to the horizontal plane. The motor rotor is detachably connected to the inner circumferential side of the rotating frame, and the axis of the motor rotor is parallel to the axis of the rotating frame. This utility model uses the drive assembly to automatically rotate the rotating frame, so that multiple motor rotors fixed on it can uniformly change direction during the impregnation process, thereby ensuring that the paint fully covers the surface of each rotor, effectively avoiding the problem of uneven paint film caused by inconsistent reversal times and time control in traditional manual operation.

The utility model relates to an injection molding device for processing a sealing end cap, which comprises an upper mold and a lower mold which can be opened and closed, the upper mold comprises an upper mold plate and an upper backing plate which are connected, a sprue bush is arranged on the upper mold plate, a communicated sprue is arranged in the sprue bush and the upper backing plate, and a first cooling runner positioned on the outer side of the sprue is arranged in the upper backing plate; the lower die comprises a lower base plate, a positioning plate and a lower die plate which are sequentially arranged from top to bottom, the lower base plate is provided with a profiled groove, a high-pressure air channel communicated with the lower portion of the profiled groove is arranged between the positioning plate and the lower base plate, a mold core penetrating through the high-pressure air channel and located in the profiled groove is arranged between the positioning plate and the lower die plate, and a second cooling runner is arranged in the mold core. The problem of bubbling caused by non-uniform or incomplete cooling can be solved by double-sided cooling, the problem of non-uniform air holes caused by foaming time difference on two sides is solved by air inlet and pressure application around the mold core, and the ejection rod ascends to demold, so that the forming precision and the processing efficiency of the sealing end cap are improved.

The utility model discloses a macrocrystalline fused magnesite furnace uniform adjusting and distributing device which comprises a macrocrystalline fused magnesite furnace body, a distributing box is arranged at the top of the macrocrystalline fused magnesite furnace body, the right side of the distributing box is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a driving gear, and the output end of the driving gear is fixedly connected with a rotating shaft. The surface of the driving gear is meshed with a driven gear, an inner cavity of the driven gear is fixedly connected with a driving ring, the bottom of the driving ring is fixedly connected with a vertical rod, and the bottom of the vertical rod is fixedly connected with a scraping plate. According to the large-crystal fused magnesite furnace, the large-crystal fused magnesite furnace body, the material distribution box, the driving motor, the driving gear, the driven gear, the driving ring, the vertical rod, the scraping plate, the material distribution plate, the falling pipe, the falling through groove and the supporting block are used in a matched mode, continuous and rapid feeding can be achieved in a rotary pushing mode during feeding, raw materials can be evenly distributed, and the production efficiency is improved. The problem of uneven material distribution is solved.

This invention discloses an induction hardening device for machining bevel gear shaft workpieces, belonging to the technical field of heat treatment processing equipment. The device includes a housing with a partition inside. A multi-station turntable is located above the partition, and a frame is connected to the top of the turntable. Along the circumferential direction of the multi-station turntable, there are bevel gear preheating stations and overall heating stations. Each station has a corresponding lower center assembly, and an upper center assembly is located above each station. The upper center assemblies are mounted on the frame via an elastic floating mechanism and are coaxially engaged with the lower center assemblies. This invention achieves uniform hardening of bevel gear workpieces through a differentiated station layout and adapts to the thermal deformation of the workpiece through the elastic floating mechanism, effectively improving the coaxial arrangement and mutual cooperation in the direction. This invention achieves differentiated heat treatment of bevel gear workpieces, ensuring the consistency of the hardened layer depth and adapting to the thermal expansion and contraction deformation of the workpiece, thus avoiding workpiece damage.

This application relates to the field of etching apparatus technology, and more particularly to a carrier plate etching method and apparatus. The technical solution includes a conveying device and a spray system mounted above it. The spray system comprises multiple sets of local spray modules arranged sequentially along the carrier plate's movement direction. Each module includes a mounting box, a sealing mechanism located on both sides of the mounting box and forming a seal on the carrier plate surface, multiple etching nozzles, a flow guiding nozzle, and a recovery mechanism. The sealing mechanism defines a sealed etching area between the mounting box and the carrier plate. The flow guiding nozzle blows airflow towards the other side of this area, causing the etching solution to flow in a directional direction. The recovery mechanism then recovers the etching solution flowing to that side. This apparatus decomposes large-area spraying into multiple independent and controllable local etching segments, preventing uneven etching caused by irregular lateral diffusion and concentration decay of the etching solution. It also improves the etching solution exchange rate and etching efficiency, and enables timely recovery of waste liquid, reducing pollution and consumption.

The utility model relates to the technical field of automobile lamp structures, and discloses a structure for optimizing an automobile lamp light source, which comprises a light-emitting part, a thick-wall part arranged in the light-emitting direction of the light-emitting part, a reflecting mirror arranged below the thick-wall part, and an optical film additionally arranged along a light-emitting opening in front of the reflecting mirror, a light path of the light-emitting part passes through the thick-wall part to form a light-emitting light path, and the light-emitting light path passes through the reflecting mirror to form a reflecting light path; the optical film is provided with a microstructure, through the arrangement of the optical film and the like, a light path emitted by the light source is processed by the thick-wall part to form a light emitting path, the light emitting path is reflected to the optical film by the reflecting mirror, and the microstructure on the optical film is used for diffusing a light angle and rotating the light angle to form a uniform diffusion light path. The problem that light rays are not uniform due to the fact that the light rays are adjusted only through a single reflecting face of the reflector originally is solved.

The invention discloses an anticorrosive and antibacterial coating, a preparation method and application thereof and a household appliance, and belongs to the technical field of coatings. The anticorrosive and antibacterial coating is two-dimensional nano material grafted 2-methacryloyloxyethyl phosphorylcholine enhanced epoxy resin; the structure of the two-dimensional nano material comprises amino, and the preparation process comprises the following steps: carrying out grafting reaction on the two-dimensional nano material and 2-methacryloyloxyethyl phosphorylcholine to obtain two-dimensional nano material grafted 2-methacryloyloxyethyl phosphorylcholine; the amino group in the two-dimensional nano material grafted 2-methacryloyloxyethyl phosphorylcholine and the epoxy group in the epoxy resin are subjected to a chemical reaction to form a covalent bond, and the two-dimensional nano material grafted 2-methacryloyloxyethyl phosphorylcholine reinforced epoxy resin is obtained. The coating is applied to the aspect of shell coatings of household appliances, solves the problems of poor corrosion resistance and antibacterial effect of metal shells of existing household appliances, and has the characteristics of excellent corrosion resistance and antibacterial property.

The invention discloses an aluminum roll continuous oxidation production line which comprises an unwinding machine, a continuous oxidation assembly, an air dryer, a film laminating machine and a winding machine which are sequentially arranged, and the continuous oxidation assembly comprises six reaction devices and six cleaning devices which are sequentially and alternately arranged. The six reaction devices are a degreasing device, an alkali washing device, a neutralizing device, an anodic oxidation device, a dyeing device and a sealing device in sequence along the working procedure sequence, each reaction device comprises a reaction tank, a guide roller, an upper spraying structure and a lower stirring structure, an adding structure is arranged in the alkali washing device, reaction liquid is automatically added according to the concentration of the solution in the reaction tank, and the stirring structure is arranged in the reaction tank. Through the design of an upper spraying structure and a lower stirring structure, the double surfaces of the aluminum coil can be ensured to be in uniform contact with reaction liquid in each reaction tank; an adding structure is arranged in the alkali washing device, reaction liquid can be automatically added, the concentration consistency of the reaction liquid is ensured, and therefore the aluminum roll oxidation process is continuous, the roll-to-roll operation of aluminum rolls is improved, and the production efficiency and the cost effectiveness are ensured.

The application relates to the field of inkjet printing technology, and particularly discloses a surface inkjet printing method, device and system for special-shaped products, which comprises the following steps: scanning a special-shaped product to be inkjet printed to determine the surface contour of the special-shaped product; determining the inkjet printing track of a nozzle and the surface to be inkjet printed according to the surface contour, the inkjet printing track and the surface of the special-shaped product always maintaining a preset distance; and controlling the nozzle to inkjet print the surface to be inkjet printed of the special-shaped product along the inkjet printing track. In this way, the inkjet printing track of the nozzle and the surface to be inkjet printed is determined according to the obtained surface contour, and the inkjet printing track and the surface of the special-shaped product always maintain a preset distance. The coating deposition amount difference caused by the distance change between the nozzle and the product surface is effectively solved, and the uniform distribution of the coating thickness in different areas is realized.

The invention belongs to the field of material processing equipment, and discloses a preparation system and method of a flat composite membrane. The system comprises a film scraping device, a positioning gel device and a cleaning, drying and winding device, the membrane scraping device is used for coating a porous base material with a membrane casting solution, and the positioning and gelling device is used for positioning and gelling a primary composite membrane formed after coating of the membrane casting solution and comprises positioning equipment and a gelling tank; and the positioning equipment and the gel tank are sequentially arranged below the film scraping device. The system provided by the invention solves the problems that the coating thickness and uniformity of the two surfaces of a base material are difficult to control, the gelation process is unstable and the like during double-surface continuous and synchronous coating of a membrane casting solution with certain flowability and viscosity in the prior art, and can be applied on a large scale.

The invention provides a material distributing device and an automatic concrete distributing machine for a prefabricated railway T-shaped beam, and relates to the technical field of railway prefabricated beam production. The material distributing device comprises a supporting frame, a movable pipe box and a baffle, the supporting frame is used for being erected above the T-beam concrete formwork, a left material distributing station, a middle material distributing station and a right material distributing station are arranged corresponding to the T-beam concrete formwork, the movable pipe box is movably installed on the supporting frame and moves on the three material distributing stations in a reciprocating mode, and the baffle is arranged on the middle material distributing station and the right material distributing station. The movable pipe box is provided with a material distribution cavity, the material distribution cavity penetrates through the movable pipe box in the vertical direction, the material distribution cavity is used for being communicated with the discharging end of the material distribution machine through a material spreading pipe, the baffle is arranged on the movable pipe box, and when the movable pipe box is located at the middle material distribution station, the baffle covers half of the cross sectional area of an outlet of the material distribution cavity in a sealing mode. And the middle material distribution station is an initial station for moving the tube box. In the three-section material distribution process, material distribution of the left material distribution station, the middle material distribution station and the right material distribution station is uniform.

The invention discloses a two-component polyurethane resin adhesive for circuit boards and a preparation process thereof, including an A-component adhesive and a B-component adhesive, wherein the A-component adhesive includes a fluoroacrylate monomer, a furan resin, N-(methoxymethyl)-2-acrylamide, hydroxypropyl acrylate, nano-alumina, a dispersant, and an organic solvent; and the B-component adhesive includes 1,3-diisocyanate, glycerol, 3-phenylbenzoic acid, an organic tin catalyst, polyethylene oxide, a defoamer, and an organic solvent. The invention can prepare a two-component polyurethane resin adhesive with high temperature resistance and good wetting and dispersion effect, solves the problems of poor high temperature resistance and unsatisfactory wetting and penetration effect of polyurethane resin, and realizes its application in circuit boards.