1850 results about "Film material" patented technology

The invention provides rolling equipment, a current collector, a preparation method of the current collector, a pole piece, a battery and a device. A rolling device comprises a roller mechanism, a flow control mechanism and a power mechanism. The roller mechanism comprises at least two opposite rollers arranged at intervals and a flow control mechanism. The flow control mechanism is used for independently controlling the flow of the cooling medium in each cooling channel; the power mechanism is used for driving at least one roller to rotate. According to the rolling equipment, the roller diameter of the roller can be simply, effectively and flexibly adjusted by controlling the flow, so that the thickness of a rolled membrane material is adjusted, for example, a current collector with a large thickness in a tab area is prepared, the current collector is used for preparing an electrode pole piece, the problem of belt breakage in mass production of the electrode pole piece can be solved, and the production efficiency of the electrode pole piece is improved. And the yield of electrode plate production is improved.

The invention relates to the technical field of marking machine devices, in particular to a marking machine for advertisement-level reflective film production, which comprises an operation bracket, a laser marking machine main body is mounted at the upper end of the operation bracket, and a marking platform is arranged on the inner side of the operation bracket. A pre-printing film material pretreatment mechanism used for treating the surface of a reflective film before printing is arranged at the position, close to the front portion, of the upper end of the marking platform, and a post-printing precision treatment mechanism used for treating the surface of the printed reflective film is arranged at the position, close to the rear portion, of the upper end of the marking platform. Various kinds of dirt are adhered and removed through the adjustable flexible rubber sleeve, self-cleaning of the assembly is achieved in cooperation with the scraper, interference factors on a laser beam propagation path are thoroughly removed, and a clean and flat machining basis is provided for subsequent laser marking.

The invention provides a long-acting dripping antifogging master batch as well as a preparation method and application thereof, and the long-acting dripping antifogging master batch comprises the following components in parts by weight: 40-90 parts of matrix resin, 10-40 parts of a dripping agent, 1-20 parts of metal salt and 1-20 parts of a high-molecular-weight slow release agent. According to the long-acting dripping antifogging master batch disclosed by the invention, the dripping agent, the metal salt and the high-molecular-weight slow-release agent are compounded, and the long-acting dripping antifogging master batch is used for preparing a thin film material, so that the dripping lasting period of the thin film material can be effectively prolonged, and meanwhile, the thin film has relatively high light transmittance.

The invention discloses an organic light-emitting device and a light-emitting device, one side of the organic light-emitting device close to an anode is provided with two hole transport layers which are arranged according to a high-low refractive index relationship, the material of the first hole transport layer is as shown in a formula 1, and the material of the second hole transport layer is as shown in a formula 2. According to the organic light-emitting device and the light-emitting device, through matching optimization of device film layer materials and structural combination of film layers with different refractive indexes, the stability of the materials and transmission of current carriers are guaranteed, meanwhile, light field distribution is improved through optimization of an optical microcavity structure, the photon extraction efficiency of the device is improved, and the light-emitting efficiency of the device is improved. The ineffective loss of photon energy in the organic layer is reduced, so that the performance of the organic light-emitting device and the light-emitting device comprising the organic light-emitting device is improved in the aspects of light-emitting efficiency, starting voltage, light-emitting service life and the like. Formula 1 and Formula 2.

The invention relates to a flexible film dynamic following wrinkle removing device based on machine vision, and relates to the field of flexible film processing and intelligent manufacturing, and the flexible film dynamic following wrinkle removing device comprises a visual identification module which is used for carrying out real-time image acquisition on a flexible film in operation and identifying a wrinkle position; the flexible flattening roller is made of a flexible material and is used for being in contact with the flexible film; the thrust executing mechanism is arranged on the back face of the flexible flattening roller and comprises a thrust component capable of moving in the axial direction of the flexible flattening roller. The moving device is used for driving the thrust part to move to the wrinkle position in the axial direction; and the control unit is used for controlling the thrust executing mechanism according to the wrinkle position identified by the visual identification module, so that the thrust part is aligned with the wrinkle position and pushes the flexible flattening roller to generate local deformation, and the film wrinkle is forcibly flattened. According to the method, the wrinkle position is detected in real time through machine vision, the wrinkle removing parameters are dynamically adjusted, the wrinkle removing precision and efficiency can be improved, and meanwhile the damage risk of a thin film material is reduced.

The invention discloses a full-automatic vehicle film laminating machine and a hot-pressing compounding process thereof, and aims to improve the production efficiency of a vehicle film and the adhesive force of a film layer. The laminating machine comprises an electrostatic spraying chamber and a hot pressing chamber, and efficient compounding of membrane materials is achieved through the synergistic effect of the electrostatic spraying chamber and the hot pressing chamber; a film material is automatically fed into a laminating machine through an upper-layer film leading-in roller and a base material film leading-in roller, after the film material enters an electrostatic spraying chamber, the surface of the film material is subjected to corona treatment, and a nano coating solution is uniformly sprayed on the surface of an upper-layer film through an atomizer; meanwhile, redundant charged particles on the surface of the substrate film are collected through an electrostatic collection plate; the sprayed membrane material enters a hot-pressing chamber, and is heated and pressurized under the action of a hot-pressing roller, so that the two layers of membranes are tightly combined, and the high bonding strength between the membrane layers is ensured; and finally, the finished product film material is wound through a finished product storage roller, and a high-quality vehicle film product is formed.

The invention belongs to the technical field of waterproof and moisture permeable membrane materials, and particularly relates to a bio-based microporous membrane based on a template and a preparation method and application thereof, and the preparation method comprises the following steps: dispersing one of polybenzimidazole, aminated PI and carboxylated PBO and modified CNF into a DMF / water system; performing electrostatic spinning on the high-viscosity spinning solution; carrying out low-temperature vacuum drying treatment on the modified nanofiber self-supporting framework; coating and filling the bio-based polyurethane resin into the bio-based microporous membrane template, and carrying out negative pressure adsorption until the filling is uniform; and carrying out gradient drying on the bio-based wet membrane to obtain the bio-based microporous membrane. Compared with the prior art, the problems that in the prior art, the mechanical property or stability of bio-based polyurethane is insufficient, and a nanofiber reinforcing technology is difficult to combine with the bio-based polyurethane are solved. A nanofiber self-supporting framework with a stable structure is prepared through an electrostatic spinning technology, and then the nanofiber self-supporting framework is compounded with bio-based polyurethane to form a microporous membrane layer with waterproof and moisture permeable functions.

The invention provides a silica hydrogel, a method for removing the same, and a silica hydrogel film. A silica-based composite material modified by an alkyl amine group NH2L and an organic alkyl group R is prepared by adopting a reversed-phase microemulsion method, and a silica colloid material highly modified by an organic group is obtained by controlling the molar weight of alkyl amine silane and alkyl silane and controlling no use and no contact of any alcohol solvent in the whole preparation process. Adding acetone for demulsification, centrifugally collecting, washing solids, drying to obtain a solid silicon dioxide colloid material, and dissolving the solid silicon dioxide colloid material in deionized water to obtain the silicon dioxide hydrogel. The silica hydrogel has solubility in an alcohol solvent and can be removed by the alcohol solvent. The silicon dioxide hydrogel can be combined on the surface of a membrane material to obtain a silicon dioxide hydrogel membrane.

The application relates to the technical field of packaging films, and discloses an antistatic plastic packaging film and a preparation process.The antistatic plastic packaging film comprises 100 parts by weight of polyethylene, 1-6 parts by weight of phenolic resin polyaniline antistatic agent and 0.2-0.3 parts by weight of an antioxidant.The dodecyl succinic anhydride esterified phenolic resin contains carboxyl groups, can be used as a protonic acid, is doped into polyaniline through an in-situ polymerization reaction, makes imine nitrogen atoms of the polyaniline protonate, forms a charged excited state polaron, and thus the conductivity of the polyaniline is improved, the resistance of the polyethylene is reduced, and the antistatic performance of the packaging film is improved.The dodecyl succinic anhydride esterified phenolic resin and the doped polyaniline have good compatibility with the polyethylene, have a certain reinforcing effect on the polyethylene, and make the film material have higher tensile strength and elongation at break.

The invention discloses an alkali-resistant seal primer for a building outer wall. The alkali-resistant seal primer is prepared from the following components in parts by weight: 30-45 parts of modified styrene-acrylic emulsion, 10-20 parts of waterborne epoxy resin emulsion, 8-15 parts of modified nanoscale alkali-resistant filler, 8-12 parts of a composite sealing agent, 1-3 parts of a dispersing agent, 0.5-1.5 parts of a defoaming agent, 2-5 parts of a coalescing agent, 0.1-0.5 part of a pH regulator and 15-25 parts of deionized water. A basic membrane material is constructed through a compound system of the modified styrene-acrylic emulsion and the epoxy resin emulsion, so that the adhesive force and the weather resistance of the membrane material are improved; by combining the synergistic effect of the modified nano-scale alkali-resistant filler, the dispersity and the alkali-resistant long-term effect are enhanced; due to the deep sealing effect of the composite sealing agent, the alkali-resistant durability and the sealing performance of the primer are remarkably improved. The building exterior wall alkali-resistant seal primer has excellent alkali-resistant durability, sealing performance, weather resistance and adhesive force, and meets the sealing treatment requirements of various building exterior wall base layers.

The invention discloses a test method for exploring the inhibition effect of a coating on GIL metal particles, and relates to the technical field of high-voltage transmission lines and insulation, the test is carried out in a GIL test platform, and the test method comprises the following steps: S1, selecting a coating material; s2, determining a film covering position; s3, selecting proper particles; s4, determining a particle placement position; s5, carrying out a pressurization test; and S6, observing the motion state of the particles under high voltage, recording the take-off voltage, the stop voltage and the distribution range of the particles, and analyzing the effect of the film on inhibiting the take-off of the particles. According to the test method for exploring the inhibition effect of the covering film on the GIL metal particles, the inhibition effect of the covering film on the metal particles in different shapes is observed and compared through tests, and a basis is provided for practical application of the covering film.

The application discloses a LVT double-machine composite production line, which comprises a first extruder, a first calendering and laminating device, a heating device and a film material laminating device which are sequentially connected from right to left; the first calendering and laminating device comprises a first constant-thickness roller group, a second constant-thickness roller group and a composite roller group, the first constant-thickness roller group is located above the composite roller group, and the second constant-thickness roller group is located right of the composite roller group; the production line further comprises a second extruder and a glass fiber placing mechanism, the discharge end of the second extruder is communicated with the first constant-thickness roller group, and the glass fiber placing mechanism is installed on the top of the first calendering and laminating device; the base material and the middle material are directly extruded and laminated with glass fibers, and it is not necessary to roll, cool and then warm up in advance, so that a large amount of energy is saved and a large amount of complicated operation is reduced; the first extruder, the first calendering and laminating device, the heating device and the film material laminating device are sequentially arranged, so that only the length direction of the occupied space is occupied, and the space of the equipment is saved.

The utility model relates to the technical field of composite protective film processing, in particular to a composite protective film cutting device which comprises a cutting table, and a discharging mechanism is arranged on the right side of the upper end of the cutting table. A cutting mechanism is arranged on the left side of the upper end of the cutting table, a pressing mechanism is arranged in the middle of the upper end of the cutting table, and a traction mechanism is arranged at the upper end of the cutting table and located between the cutting mechanism and the pressing mechanism. According to the utility model, the vacuum chuck is used for adsorbing the end of the film, the suction pump is used for enabling the vacuum chuck to generate negative pressure to realize adsorption, excessive external force does not need to be applied to the film, and the damage to the film material can be effectively avoided.

The invention belongs to the technical field of optical beam splitting elements, and particularly relates to a beam splitter prism depolarization film, a preparation method thereof, a beam splitter prism and a preparation method thereof. The beam splitter prism depolarization film provided by the invention comprises a first SiO2 film layer, a first Ta2O5 film layer, a first Al2O3 film layer, a metal silver layer, a second Al2O3 film layer, a second Ta2O5 film layer and a second SiO2 film layer which are sequentially laminated, wherein the first SiO2 film layer is in contact with the surface of a substrate. According to the beam splitter prism depolarization film provided by the invention, the number of film layers is obviously reduced, the total film thickness is obviously reduced, the film layer thickness is greatly optimized, the film material consumption cost and the equipment energy consumption are reduced, and the processing efficiency is greatly improved; meanwhile, the risks of film layer breakage and electroplated layer falling are reduced; the film layer contains less thin layers, the equipment monitoring is more accurate, the actual effect is closer to the design, the achievable specification is more strict, and the practical value is excellent.

The invention discloses a waterproof bag film material and a preparation method thereof, relates to the technical field of polybutylene terephthalate polymer materials, and belongs to the patent classification number C08L67 / 02. The method comprises the following steps: sequentially carrying out silane coupling agent modification and solid-phase free radical polymerization on activated gas-phase nano silicon dioxide to construct a core-shell structure nano reinforced filler with rich epoxy groups on the surface; carrying out melt blending extrusion on the mixture, PBT (Polybutylene Terephthalate) resin, a chain extender, an end-capping reagent and the like to obtain hydrolysis-resistant modified granules; a PBT base film is prepared through casting, two-way stretching and heat setting; the preparation method comprises the following steps: performing ultraviolet ozone activation on a base film, coating a super-hydrophobic coating solution prepared from aminated nano silicon dioxide, epoxy-terminated polydimethylsiloxane, a cross-linking agent and an accelerant, and heating and curing to finally obtain the high-strength high-waterproof PBT waterproof bag film. The prepared film has excellent mechanical strength, body hydrolysis resistance and super-hydrophobic surface, the water contact angle is high, the coating adhesive force is high, and the waterproof performance is lasting and stable under high-frequency bending.

The utility model discloses test tube film sealing equipment, and relates to the technical field of test tube detection, the test tube film sealing equipment comprises a machine body, a film feeding device, a film cutting device and a film sealing device, the machine body is provided with a film feeding station, a film cutting station and a film sealing station which are arranged at intervals, and the film sealing station is used for placing test tubes; the film feeding device is arranged at the film feeding station and is used for conveying a film material to the film cutting station; the film cutting device is arranged at the film cutting station and is used for receiving the film material conveyed by the film conveying device and cutting the film material into a film sheet with a preset length; the film sealing device comprises a driving mechanism and a film sealing mechanism, the driving mechanism is arranged on the machine body, the film sealing mechanism is movably arranged under the driving of the driving mechanism so as to have a movement stroke between the film cutting station and the film sealing station, and the film sealing mechanism is used for transferring the film from the film cutting device to the film sealing station and enabling the film to be heat-sealed at the opening of the test tube. According to the technical scheme, automatic film sealing of the test tubes is achieved, and the cost for sealing and storing the test tubes is reduced.

The application relates to an automatic film splicing device for coating production and belongs to the technical field of film splicing devices. The device comprises a rack, an operation platform arranged on the rack, a cutter mechanism arranged above the operation platform, upper and lower adsorption tape mechanisms arranged above and below the operation platform table respectively, and a station conversion mechanism for driving the upper adsorption tape mechanism to move between a film splicing preparation station and a tape sticking station. After the old and new film materials are cut by the cutter mechanism, the upper adsorption tape mechanism is driven by the station conversion mechanism to move from the film splicing preparation station to the tape sticking station, and the upper and lower adsorption tape mechanisms respectively stick the upper and lower tapes to complete the automatic butt joint of the old and new film rolls. The application realizes automatic positioning, pressing, cutting and double-side tape sticking of the old and new film materials, improves the film splicing efficiency and quality, eliminates the safety hazards of manual knife holding operation and improves the operation safety.

The invention relates to the technical field of polymer functional film materials, in particular to a double-layer structure polyester film with high barrier property and a preparation method thereof. The invention discloses a double-layer structure polyester film with high barrier property and a preparation method thereof, and the preparation method comprises the following steps: forming a single-layer gradient melt sheet in situ in a die head through temperature difference-pressure difference cooperative driving; the upper nano barrier layer is oriented and the lower crystal network is enhanced through synchronous two-way stretching; triggering secondary cross-linking through heat setting to permanently lock the gradient structure; and finally, carrying out online surface activation. According to the invention, an integrated single-layer structure is used for replacing the traditional physical lamination, so that the interlayer stripping risk is fundamentally avoided, and the prepared film has ultrahigh barrier property, high strength, excellent interface adhesion and damage self-repairing function, and is suitable for high-end aluminum laminated films, capacitor films and carbon-nitrogen substrate films.

The invention relates to the technical field of desiccant packaging equipment, and discloses a desiccant packaging supply film forming device which comprises a packaging forming device and a regulation and control conveying mechanism installed on the packaging forming device. Comprising a first rotating shaft fixedly connected with the packaging forming device and a first friction roller fixed to the first rotating shaft. Each of the two second friction assemblies comprises a second friction roller mounted on the first rotating shaft; the moving assembly is used for controlling the two second friction rollers to move; the heat dissipation assembly works in cooperation with the moving assembly and is used for enabling two second friction rollers to move in opposite directions through the moving assembly according to the friction coefficient needed by the packaging film and the material of the packaging film, and the contact area between the two second friction rollers and the packaging film is changed; for a smooth PE film, the contact area is reduced, and the friction force is reduced; for rough composite aluminum films, the contact area is increased, the friction force is improved, film material slipping or tensile deformation is avoided, and the film supply stability is ensured.

The invention discloses a double-perovskite thin film material, a preparation method thereof and a double-perovskite solar cell, and relates to the technical field of perovskite materials. The double perovskite thin film material comprises A2BCX6 type double perovskite, A is an alkali metal cation, B is a monovalent metal cation, C is a trivalent metal cation, and X is a halogen anion; the additive is a compound comprising a benzene ring and at least two sulfydryl substituted at different positions of the benzene ring. According to the embodiment, the composite center of the interior and interface of the double-perovskite thin film material can be reduced, the nucleation density in the preparation process of the double-perovskite thin film is reduced, the double-perovskite film layer has high crystallinity and larger grain size, the grain boundary in the film layer is reduced, the grain boundary defect is passivated, and the performance of the double-perovskite thin film is improved. And the photoelectric conversion efficiency of the solar cell containing the double perovskite thin film material can be improved.

The utility model discloses an electrostatic vacuum plate structure and a filling type electrostatic vacuum plate, and relates to the field of vacuum plates, the electrostatic vacuum plate structure comprises an upper vacuum plate and a lower vacuum plate, the space between the two vacuum plates is in a vacuumized state to form a vacuum cavity, and the two ends of the vacuum cavity are subjected to heat edge sealing treatment; the upper vacuum plate, the lower vacuum plate and the sealing edges at the two ends are attached through flexible insulating aluminum plastic films containing PTFE layers; inner-layer aluminum foils are pasted on the upper vacuum plate and the lower vacuum plate in the vacuum cavity respectively, the two inner-layer aluminum foils sense same-polarity negative static electricity, external air pressure is resisted through electrostatic repulsive force, and the thickness of the vacuum cavity is maintained to be in the preset size. Compared with a traditional glass fiber vacuum plate, heat transfer of an inner core material is avoided, the heat conductivity is reduced, the thickness of the vacuum plate can be reduced to be within 0.5 mm, high-performance heat-insulation ultrathin performance is achieved, a hard plate is changed into a flexible film material, and the fitting adaptability of a product on different surfaces is greatly improved.

The invention discloses a full-automatic metal coiled material packaging machine, and belongs to the field of metal coiled materials. Comprising a machining platform and a winding machine body, a first hydraulic rod used for supporting the winding machine body is fixedly connected to the upper surface of the machining platform, and a film covering mechanism used for conducting multi-layer composite wrapping on a coiled material is arranged in the middle of the upper surface of the machining platform; adjusting assemblies used for adjusting the position of the film covering mechanism are fixedly connected to the two sides of the upper surface of the machining platform. Through the arrangement of the film covering mechanism and the wrapping mechanism, when the coiled material is packaged, the to-be-packaged copper foil coiled material is arranged on the bearing cylinder wrapped with the buffer material in a sleeving mode, the first covering assembly is precisely controlled through the adjusting assembly so that the damp-proof film can be attached to the side end face of the coiled material, and two adsorption plates work cooperatively; the film material is tightly attached to the two end faces of the coiled material to form the lap joint area, then the abutting assembly pushes away the redundant film material towards the outer edge, accurate edge alignment and heat sealing reinforcement are achieved, and the problem of surface damage caused by a traditional packaging mode is solved.

The utility model discloses an automatic winding mechanism of a film blowing machine, which comprises a winding friction roller, a first swing frame and a second swing frame, the first swing frame and the second swing frame are connected with corresponding swing driving components, and a cut-off tool is arranged corresponding to the winding friction roller. A first placing part is arranged on the first swing frame and used for placing a shaft body to be wound, a moving seat is movably arranged on the first swing frame, a second placing part is arranged on the moving seat and used for receiving the wound shaft body, a moving adjusting assembly is arranged corresponding to the moving seat, and a third placing part is arranged on the second swing frame and used for placing the shaft body to be wound. The third placing part is used for placing the shaft body during winding, and the clamping and conveying assembly can clamp and convey the shaft body on the first placing part to a position to be wound. The automatic film winding device can achieve automatic winding of film materials and is suitable for different winding diameters at the same time.

The invention relates to the technical field of radiation refrigeration films, and discloses a porous polyvinylidene fluoride based composite radiation refrigeration film and a preparation method thereof. The method comprises the following steps: firstly, carrying out melt blending on PVDF, NaCl and ZnO nanoparticles and forming a film, then dissolving out NaCl through water washing, and constructing a continuous three-dimensional porous structure in a PVDF matrix; and immersing the obtained porous PVDF / ZnO membrane material into a methanol aqueous solution containing 2-methylimidazole, so that ZnO is subjected to a coordination reaction at the pore wall and is converted into the ZIF-8 nanocrystal in situ. In the thin film prepared by the steps, the micron-sized salt-induced pore structure, the nano-sized ZIF-8 particles and the interface of the ZIF-8 particles jointly form a multi-stage scattering network, so that the scattering ability of the thin film in the solar spectrum range of 0.25-2.5 microns can be remarkably enhanced, the high infrared emission performance of the PVDF matrix in an atmospheric window of 8-13 microns is maintained, and the thin film has high solar reflectivity and high infrared emissivity, and can be used for preparing the solar film. An excellent radiation refrigeration effect can be achieved, and the heat-dissipating material is suitable for being applied to building outer surfaces, equipment heat dissipation, individual heat management and the like.

The present invention is directed to an analytical method, using surface waves excited in a liquid system forming part of a sensor, to determine a property of a test substance. An aspect of the disclosure provides a method for controlling a sensor for determining a property of a test substance, the sensor having a sensitivity and dynamic range, the sensor comprising: a liquid system comprising: a bulk liquid phase carrying a thin film on the surface of the bulk liquid phase: wherein the thin film comprises a film material and wherein the thin film exhibits an electrical response to mechanical stress and vice versa wherein said response depends on the thermodynamic state of the liquid system, the sensor configured to: contact the surface of the liquid system with the test substance thereby to generate a surface wave on the liquid system: and, determine the property of the test substance based on parameters of the surface wave: wherein the method for controlling the sensor comprises: controlling the sensitivity by changing a thermodynamic parameter of the liquid system.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

The utility model provides a laminating device for membrane electrode packaging and a fuel cell production system, and belongs to the technical field of fuel cell manufacturing. The laminating device for membrane electrode packaging comprises a laminating assembly, a frame unwinding assembly and a driving assembly, the laminating assembly comprises a steel roller and a rubber roller which are oppositely distributed, and a gap for a membrane material to pass through is formed between the steel roller and the rubber roller; the frame unwinding assembly is located on the upstream of the steel roller and used for conveying the frame to the gap through the steel roller to be attached to the base material. The driving assembly is in driving connection with the laminating assembly, so that the steel roller and the rubber roller can be close to each other or far away from each other, and the laminating device for membrane electrode packaging can effectively solve the problems that the flatness is poor and bubbles exist after the frame and the membrane electrode are laminated.

The invention relates to the technical field of automatic control, in particular to a rewinding machine membrane material deviation correction system which comprises a signal fusion module, a deviation prediction module, a double-loop coupling module, a collaborative correction module and a self-diagnosis rollback module. According to the method, through a synchronous structure formed by multi-source edge readings, the edge detection process has the capability of resisting illumination fluctuation and has a more stable input basis, the deviation trend is constructed by utilizing the synchronism between dynamic edge parameters and tension changes during deviation prediction, real deviation and tension disturbance are not confused any more, and the accuracy of deviation prediction is improved. In the control process, the dominant relation between a position factor and a tension factor is judged according to an offset difference structure, the adjusting quantity is distributed according to an offset source, and in the action execution stage, the linkage relation between a sliding table carrier roller and a frame is converted into a proportional structure, so that the control process does not depend on single-mechanism compensation any more; and an abnormal accumulation mechanism is established for signal continuous temperature rise and communication fluctuation during operation, so that the whole control link has stable backspacing capability.

The invention relates to the technical field of polyamide nanofiltration membranes, in particular to an acid and alkali resistant high-strength nanofiltration membrane and a preparation method thereof. The problem that the strength and the acid and alkali resistance of a polyamide nanofiltration membrane in the prior art cannot be considered at the same time is solved. The base membrane material of the polyamide nanofiltration membrane is modified polyethersulfone and is obtained by chemically bonding a carbon nanotube subjected to double surface modification by titanium dioxide sol-gel and a KH550 coupling agent in a polyester non-woven fabric, and the modulus of the material is improved by utilizing an inorganic-organic hybrid network; the functional layer of the polyamide nanofiltration membrane is made of modified polyamide, and the modified polyamide functional layer is formed by forming a polyamide matrix through polymerization reaction of 2, 2 '-disulfonic acid-4, 4'-diaminobiphenyl, piperazine and trimesoyl chloride and introducing 4-amino-2, 2, 6, 7-tetramethyl-1, 3-pentanediol at the same time. And the chemical resistance is improved by a free radical capturing group generated by 2, 2, 6, 6-tetramethylpiperidine and octa-isobutyl cage type silsesquioxane.

The invention discloses an equipment self-adaptive control method for growth of a silicon carbide epitaxial thin film, relates to the technical field of growth of thin film materials, and solves the problems that thermal deformation of a graphite base is possibly caused due to the fact that over-limit protection is not set in power regulation; in order to solve the technical problems of C / Si ratio imbalance caused by temperature deviation due to the fact that the temperature deviation cannot be counteracted due to asynchronous power and gas flow regulation, space-parameter-time recognition logic is innovatively adopted, an abnormity-defect association knowledge base is matched, a center defect and an edge defect can be accurately distinguished, PID parameters are optimized by adopting a critical proportion method, and the accuracy and the reliability of the system are improved. The temperature regulation response speed is increased, a power upper and lower limit judgment mechanism is increased, equipment damage caused by sudden power change is avoided, synchronous linkage of power regulation and H2 / C / Si ratio is achieved, accurate mapping of defect type-cause-regulation strategy is established, differential schemes are designed for edge warping, polycrystal / particles, impurity aggregation and uneven thickness, and the defect type-cause-regulation strategy is optimized. And the edge thickness uniformity deviation and the edge defect rate are reduced.