4868 results about "Film material" patented technology

The invention relates to the technical field of membrane material image processing, in particular to a membrane material surface treatment defect detection method and system based on image recognition, and the method comprises the following steps: collecting a membrane material surface image, carrying out the statistics of the frequency of gray levels in a gray level image, and obtaining the gray level distribution information of the membrane material surface image; and dividing the membrane material surface image into a plurality of local areas with the same size, calculating a gray level distribution entropy value in each local area, and generating a membrane material surface local area analysis result. According to the method, the membrane material surface image is converted into the gray level image, the gray level frequency is counted, fine gray level distribution information is obtained, preliminary region division of the surface image is achieved, and the positioning accuracy of potential defects is improved. The gray level distribution entropy value of the local area is used as a defect evaluation index, and a potential defect area is accurately marked by combining a preset distribution threshold value, so that the sensitivity of defect detection is effectively improved.

The invention discloses an actuator structure and a liquid spraying device comprising the same, the actuator structure comprises a vibrating membrane, a piezoelectric material, a lower electrode and an upper electrode, the top surface and the bottom surface of the piezoelectric material are respectively connected to the upper electrode and the lower electrode, the vibrating membrane is connected to the bottom surface of the lower electrode, and the upper electrode is connected to the bottom surface of the piezoelectric material. The piezoelectric material is a single crystal piezoelectric film material. The liquid spraying device comprises the actuator structure. According to the actuator structure and the liquid spraying device comprising the actuator structure, the piezoelectric material is processed and manufactured by using the single crystal piezoelectric film material, so that the single crystal piezoelectric film material can be processed by using a wet etching technology, the problems in a dry etching process are effectively avoided, the preparation precision of the actuator structure is ensured, and the manufacturing cost of the actuator structure is reduced. The stability of the actuator structure is improved, and the manufacturing cost of the actuator structure is reduced.

The invention discloses a film material surface defect detection method and system based on machine vision, and relates to the technical field of machine vision. Joint modeling is carried out by utilizing a local reflectivity difference value Ploc (x, y) of a pixel coordinate (x, y), a local stacking disturbance index S (x, y) of the pixel coordinate (x, y) and a local gray variance Wvar (x, y) of the pixel coordinate (x, y) in a film material image irradiated by a dual-angle light source, and the detection sensitivity of asymmetric optical disturbance caused by trace salt mist deposition is enhanced. Compared with the current situation that a traditional visual detection method is insufficient in response to early corrosion spots, the method has the advantages that a light reflection subsurface corrosion map can be effectively formed through quantitative combination of two factors of reflection anomaly and structural disturbance in the image, and rapid positioning and early warning of the membrane material salt spray corrosion initial stage are achieved.

The invention relates to the technical field of film material preparation, and discloses a polylactic acid antibacterial packaging film and a preparation method thereof, the polylactic acid antibacterial packaging film comprises the following raw material components by weight: 60-80 parts of polylactic acid, 10-20 parts of polyvinyl alcohol, 10-20 parts of nano zinc oxide, 0.5-1.5 parts of nano cellulose, 1-3 parts of an antibacterial agent, and 10-15 parts of corn starch; the antibacterial agent is prepared from the following components in parts by weight: 5-10 parts of carboxymethylated chitosan and 0.5-2 parts of a dynamic disulfide bond cross-linking agent, the substitution degree of the carboxymethylated chitosan is greater than or equal to 80%, the antibacterial agent is prepared from tea tree essential oil and eugenol, and the dynamic disulfide bond cross-linking agent is bis (3-aminopropyl) disulfide. By adopting a composite system of carboxymethylated chitosan and a dynamic disulfide bond cross-linking agent, the technical effects of humidity-triggered self-repairing and mechanical property synergistic improvement are achieved, and compared with a packaging film with a single polymer base material in the prior art, the problem of antibacterial failure caused by mechanical damage is solved.

The invention provides a carbon nanotube / polyvinyl alcohol hydrogel and a preparation method and application thereof, and belongs to the technical field of composite materials and flexible electron cross materials. Cellulose nanofibers and multi-walled carbon nanotubes are dispersed in deionized water to obtain dispersion liquid; uniformly mixing a polyvinyl alcohol solution and the dispersion liquid to obtain a mixed solution; carrying out oriented freezing forming on the mixed solution, and then freeze-drying the mixed solution to obtain an aerogel sample; performing hot pressing on the aerogel sample to obtain a thin film material; and swelling and balancing the film material in deionized water to obtain the carbon nanotube / polyvinyl alcohol hydrogel. According to the invention, collaborative optimization of conductive network continuity, interface bonding strength and energy dissipation capability is realized, so that high conductivity, high stress and obdurability are considered, and the material is endowed with multi-dimensional strain sensing capability and signal stability; and a new idea is provided for realizing effective balance between high conductivity and excellent mechanical properties of the hydrogel material.

The invention discloses an eyelash forming system and method based on a laser cutting film, relates to the technical field of eyelash forming processing, and aims to solve the technical problems of insufficient precision and hot melting deformation in a traditional eyelash process. Comprising a design input and modeling module, a process parameter intelligent optimization module, a cutting path intelligent planning module, a production process intelligent control module, a quality online monitoring and feedback module and a data management and analysis module. The process parameter intelligent optimization module is connected with the design input and modeling module and is used for receiving the initial design scheme and optimizing cutting process parameters of laser power, cutting speed, pulse frequency and light spot diameter by using a machine learning algorithm in combination with a laser cutting process knowledge base and thin film material characteristics; and the cutting path intelligent planning module is connected with the design input and modeling module and the process parameter intelligent optimization module. The eyelash processing device has the advantage of improving the eyelash processing qualification rate and the production efficiency.

The invention provides a gamma-cyclodextrin-based metal organic framework composite material as well as preparation and application thereof. The metal organic framework composite material based on gamma-cyclodextrin comprises chitosan, gamma-CD-MOFs (Metal Organic Frameworks) and an active substance. The preparation method comprises the following steps: by taking chitosan as a film material base material, synthesizing gamma-CD-MOFs by utilizing a hydrothermal method, and then loading cinnamyl aldehyde with antibacterial property, 2-methoxycinnamyl aldehyde with ultraviolet light resistance and curcumin with an antioxidant effect into the gamma-CD-MOFs. And finally, mixing with chitosan with better film-forming property, and spraying on glass or the surfaces of fresh fruits. The gamma-CD-MOFs has the characteristic of slowly releasing bioactive substances, is non-toxic and is a material capable of being applied to food packaging.

This case relates to a self-healing optical film and its preparation method. The optical film is made by adding a nanoparticle suspension to PET masterbatch as the main material during its melt extrusion process, resulting in a cast sheet. After biaxial stretching, a self-healing coating liquid is coated online, followed by shaping and cooling. The nanoparticle suspension includes nano-titanium oxide, MAH-PET polymer, ATO nanoparticles, and titanate coupling agent. The self-healing coating liquid is produced by core-shell emulsion polymerization, forming a nano-silica hard core and an acrylate functional monomer polymer soft shell. This invention adds the nanoparticle suspension by in-situ feeding in the middle of the extruder, reducing steps, improving dispersion uniformity, and making the film surface smoother. Then, the self-healing coating liquid is applied online after longitudinal stretching and before transverse stretching, forming a film on the film surface, improving the hardness and scratch resistance of the film material, enabling rapid self-healing at room temperature, strong stability, and avoiding the occurrence of rainbow patterns.

The invention discloses a far-infrared band optical thin film, a preparation method thereof and an optical element, and relates to a far-infrared band optical thin film technology, the far-infrared band optical thin film comprises a substrate, a front band-pass film system and a back cut-off film system; wherein the front band-pass film system is located on one side of the substrate, and the back cut-off film system is located on the other side of the substrate; the far infrared band optical thin film is prepared by alternately depositing lead telluride serving as a high-refractive-index thin film material and cadmium telluride serving as a low-refractive-index thin film material. The far infrared band optical thin film can cut off the band with the wavelength smaller than 4 microns, and the average transmittance is 0.23%; anti-reflection is carried out at the wave band of 5-50 microns; the moisture-resistant performance is excellent.

The invention belongs to the technical field of thin film capacitors, and particularly relates to a chemical grafting modified polypropylene capacitor film material and a preparation method and application thereof. According to the preparation method of the chemical grafting modified polypropylene capacitor film material, provided by the invention, diethylenetriamine ethyl acrylate with a plurality of specific groups such as amino groups and carboxyl groups and unsaturated double bonds is synthesized through esterification reaction, and the diethylenetriamine ethyl acrylate is introduced into a polypropylene material through chemical grafting to obtain chemical grafting modified polypropylene; the prepared polypropylene capacitor film material has the excellent properties of good compatibility, difficulty in film breakage, capability of adsorbing and removing residual moisture, difficulty in oxidation corrosion, excellent breakdown resistance and the like, and the preparation method is a preparation method of the high-performance polypropylene capacitor film material; therefore, the technical problem that a polypropylene capacitor film material prepared in the prior art is low in performance is solved.

The invention discloses a laser die cutting device for high-performance film material production, and relates to the technical field of laser die cutting, and the laser die cutting device comprises a die cutting box body, a laser cutting assembly, a position adjusting assembly, a thickness detection assembly, a dust removal assembly, a safety assembly, a monitoring assembly and a control system. The thickness and position information of the film material can be obtained in real time through the laser rangefinder and the high-definition camera for nanoscale precision measurement, the laser cutting precision is ensured, meanwhile, the position adjusting assembly adopts a self-adaptive adjusting algorithm, the position of the laser cutting assembly is automatically adjusted according to the preset cutting path and the current position, and the cutting precision is improved. Through the arrangement of a three-way valve and a gas output pump in the laser cutting assembly, non-oxidizing gas and oxygen can be switched, different cutting modes are achieved, different cutting requirements are met, and therefore it is guaranteed that the device can achieve high-precision, high-efficiency and high-adaptability laser cutting; and the safety and the flexibility of processing are also ensured.

The invention relates to the field of film materials, and discloses a degradable antibacterial film material and a preparation method thereof.The film material comprises degradable matrix resin, a modified additive, a plasticizer and a lubricant; the modified additive is prepared by loading a natural antibacterial agent on a modified flame-retardant composite filler; the modified flame-retardant composite filler is prepared by reacting cinnamyl aldehyde with a flame-retardant composite filler and forming a complex with zinc acetate dihydrate; the flame-retardant composite filler is prepared by reacting epoxidized composite filler with 1, 5-naphthalene diamine and then further reacting with phytic acid; according to the invention, the natural antibacterial agent is loaded in the modified flame-retardant composite filler through a vacuum impregnation method, and the mechanical property, antibacterial property and flame-retardant property of the material are enhanced by adding the modifying additive, so that the flame-retardant and antibacterial composite material has the advantages that the flame-retardant and antibacterial properties of the material are improved, and the service life of the material is prolonged. Meanwhile, diffusion / permeation of gas and water molecules in the film is adjusted.

The invention provides a preparation method of an environment-friendly high-performance gas barrier film, which is characterized in that a solution blending method is adopted to prepare a polyvinyl alcohol / nanocellulose / covalent organic framework nanosheet ternary composite system, and a coating method is adopted to prepare the high-performance gas barrier film under high-temperature evaporation. Multidimensional mixed nanocellulose and covalent organic framework nanosheets are introduced as functional fillers to form a stable intercalation structure with a polyvinyl alcohol matrix, so that the interfacial compatibility of the components is remarkably improved. The multi-component gas barrier film is endowed with high humidity resistance, chemical stability, high gas barrier property and the like by regulating and controlling the heat treatment temperature, the environment-friendly gas barrier film material shows good application prospects in the fields of chemical protective clothing and the like, and a new thought is provided for development of high-performance protective materials.

The invention relates to a self-repairing waterborne polyurethane composite elastomer based on dynamic interface reinforcing and toughening as well as a preparation method and application thereof, and belongs to the technical field of self-repairing high polymer materials. The method comprises the following steps: preparing a waterborne polyurethane emulsion; the preparation method comprises the following steps: uniformly dispersing polyvinylpyrrolidone in an ethanol solution, adding polyfunctional mercaptan and polyfunctional isocyanate, and adding an amino-containing imidazole monomer to obtain microsphere powder; and uniformly dispersing the microsphere powder in a waterborne polyurethane emulsion, adding a metal salt solution, and then volatilizing water to form a film material, thereby obtaining the self-repairing waterborne polyurethane composite elastomer based on dynamic interface reinforcement and toughening. The self-repairing waterborne polyurethane elastomer with excellent comprehensive performance is obtained by designing the structure of waterborne polyurethane, modifying the surface of the microsphere and introducing a dynamic interface for compounding, and the strength, the toughness and the self-repairing capability of the elastomer are simultaneously improved.

The invention discloses a diamond film and a preparation method and application thereof, and the preparation method comprises the steps: taking a substrate material matched with the lattice constant of a diamond film material as a substrate, and carrying out the surface treatment of the substrate; mixed reaction gas comprising 80%-95% of hydrogen, 3%-8% of methane and 2%-12% of auxiliary gas is introduced, wherein the auxiliary gas comprises at least one of argon, chlorine, hydrogen fluoride and hydrogen chloride; carrying out controlled chemical vapor deposition at 850-1000 DEG C under the pressure of not less than 21 kPa, and growing a diamond film on the surface of the substrate; and annealing the diamond film. According to the method, chemical vapor deposition is controlled through cooperation of auxiliary gas and temperature-pressure gradient, and non-corrosion high-speed growth of the high-purity monocrystal diamond film is achieved; in combination with a dynamic annealing process, lattice defects are effectively repaired, the comprehensive performance is optimized, and the reliability of the thin film serving as a heat dissipation component and other applications is remarkably improved.

The invention relates to a preparation method of a porous polyimide low-dielectric material. The method comprises the following specific steps: preparing a polyamide acid solution with a certain solid content under an ice-water bath condition; after the solution is recovered to normal temperature, adding a certain amount of sodium alginate, and after the solution is homogenized, adding a catalyst and a dehydrating agent for chemical imidization; the method comprises the following steps: coating a substrate medium with a solution after a certain time of reaction, standing in air for a certain time, sequentially and respectively placing the substrate medium in ethanol and a hot water bath for replacement for a certain time, airing at normal temperature, and transferring to a high-temperature oven for gradient cyclization to realize complete imidization. According to the method, conditions are mild and easy to control, and the low-dielectric film material which is flat in appearance and ordered in structure is prepared only through a normal-pressure drying method.

The invention belongs to the technical field of film materials, and particularly relates to a lower supporting film for a flexible folding display screen and a preparation method of the lower supporting film. The supporting film sequentially comprises a protective film layer, a stainless steel base material layer, an adhesive layer and a release film layer from top to bottom; wherein the adhesive layer is prepared by coating a release film with modified organic silica gel liquid, drying and curing. The ultra-thin stainless steel is used as the base material layer, can resist external force impact and scraping, is low and stable in thermal expansion coefficient, can reduce the influence of environment temperature and humidity on the size of the supporting film, and guarantees the structural consistency of the screen module in long-term use; and through multi-component composite modification of polyurethane-thiazole-organic silicon, the peeling strength of the adhesive layer and stainless steel and the bending frequency of the supporting film are improved, and the service life of the supporting film is prolonged.

The invention discloses a bio-based thermoplastic polyurethane coating material easy to degrade quickly and a controlled-release fertilizer. The coating material comprises 0.8-2.0 parts of a biological chain matrix and 0.5-1.5 parts of a chain reinforcing agent; the biological chain matrix is formed by mixing pre-oxidized vegetable oil diol and bio-based polyester diol; the chain reinforcing agent is formed by mixing a curing agent, a hardening agent and a toughening agent. The bio-based thermoplastic polyurethane coated controlled-release fertilizer comprises fertilizer particles and a bio-based thermoplastic polyurethane coating material sprayed on the surfaces of the fertilizer particles, the spraying amount of the bio-based thermoplastic polyurethane coating material is 0.8-10% of the mass of the fertilizer particles. By accurately regulating and controlling the formula of the film material, the physical properties such as tensile strength and toughness of the bio-based thermoplastic coating material can be jointly improved, so that a more excellent controlled release effect is achieved, and the contradiction between the degradability and the controlled release property of the existing bio-based polyurethane coating material is solved.

The invention discloses a foundation pit gas film foundation and a construction method thereof.The foundation pit gas film foundation comprises H-shaped steel which is sequentially connected end to end, the H-shaped steel is composed of an upper flange plate, a lower flange plate and a web, one end of the web is connected with the upper flange plate, the other end of the web is connected with the lower flange plate making contact with the ground, and the lower flange plate is provided with an open hole and a fixing mechanism; the foundation pit air film foundation further comprises spiral ground piles penetrating through the open holes and extending into the ground. The fixing mechanism is used for limiting the spiral ground pile; a connecting mechanism connected with a gas film material is arranged on the upper flange plate; the spiral ground pile is of a hollow structure, and a buffering mechanism and a reinforcing mechanism are arranged in the spiral ground pile. When the H-shaped steel is subjected to drawing force, the fixing mechanism is driven to trigger the buffering mechanism to counteract the drawing force, and meanwhile the reinforcing mechanism is triggered to increase the underground shearing force of the spiral ground pile. The problems that when an existing foundation pit air film foundation is used in coastal areas, the foundation is unstable and an air film is turned over due to low soil bearing capacity and strong wind cannot be handled are solved.

The invention discloses an infrared film absorptivity prediction method and system based on machine learning, and relates to the technical field of optical film design and performance prediction.The infrared film absorptivity prediction method comprises the following steps that feature data of a to-be-measured film material and incident light are obtained, electromagnetic field distribution and local absorption power density are output, and according to power integration and boundary conditions, an infrared film absorptivity prediction result is obtained; obtaining initial absorptivity distribution; performing modal analysis on the initial absorptivity distribution, constructing a low-dimensional absorptivity response model, and outputting absorptivity response data after dimension reduction; constructing a physical constraint neural network by taking energy conservation and Fresnel boundary conditions as constraints; on the basis of a physical constraint neural network, absorptivity prediction is carried out on the infrared thin film under different conditions, thin film structure data are optimized through a multi-objective optimization algorithm, and an optimal structure parameter combination of the infrared thin film is obtained; according to the invention, through multi-physics field modeling and the physical constraint neural network, the problems of low infrared film absorptivity prediction precision and poor optimization efficiency are solved.

The invention discloses a lithium battery pole piece dry method manufacturing process and a manufacturing equipment assembly, and the lithium battery pole piece dry method manufacturing process comprises the following steps: a powder material preparation part: mixing raw materials, kneading and fiberizing to form a powder material; the film material preparation part is used for extruding the powder material from a discharging channel to a material receiving surface, a metering gap is formed between the discharging channel and the material receiving surface, and the material receiving surface can move relative to the discharging channel, so that the powder material is spread to the material receiving surface, the powder material on the material receiving surface is rolled, and the powder material is changed into a film material. According to the lithium battery pole piece dry method manufacturing process and the manufacturing equipment assembly, the thickness of a film material can be controlled, the thickness deviation of the film material is reduced, and the influence on the product quality is avoided.

The utility model discloses a material receiving device after continuous film material waste cutting, which is characterized in that a front feeding table and a rear feeding table are arranged on two sides of a machine table in parallel and level, a gap is formed between the front feeding table and the rear feeding table, a detection mechanism is arranged above the front feeding table, a front auxiliary roller group is arranged on the rear side of the front feeding table, and a rear auxiliary roller group is arranged on the rear side of the machine table. A lifting air cylinder in the collecting mechanism is arranged on the machine table and is close to the front side of the rear feeding table, a cover plate is arranged at the output end of the lifting air cylinder and is flush with the rear feeding table, the cover plate is driven to move upwards to open a material collecting opening, and the material cutting mechanism is arranged between a front auxiliary roller set and the collecting mechanism and used for cutting waste into the material collecting opening. And the material receiving mechanism is arranged above the rear feeding table and is used for connecting the film material which is continuously fed after the waste material is cut off with the front-section film material through an adhesive tape. According to the utility model, the waste material on the continuous film material can be cut off, and the material after the waste material is cut off can be connected so as to be received and coiled in a continuous form, so that the automation level of material receiving is improved.

The utility model belongs to the technical field of electromagnet coils, particularly relates to a magnetic suspension electromagnet coil, and aims to solve the problems that a coil with a large number of turns can generate a strong magnetic field under the same current, so that the coil with a large number of turns can be adopted to generate a strong and stable magnetic field, but the large number of turns can cause some problems. In order to solve the problems that the energy loss is further increased and even the coil is possibly damaged due to the fact that the resistance of the coil is increased and heating is increased, the utility model provides the following scheme: the coil comprises a hollow framework, a plurality of turns of coils are wound on the hollow framework, and a protective sleeve is wound on the whole outer wall of the plurality of turns of coils; and the outer wall of a single copper wire of the multi-turn coil is covered and sprayed with an insulating layer. When the magnetic suspension electromagnet coil is used, through the design of the protective sleeve, the ceramic insulating coating, the heat dissipation fins, the heat extraction fan, the heat dissipation holes and the like which are made of polyimide film materials, the heat dissipation efficiency and durability of the coil are effectively improved, and stable operation of a magnetic suspension electromagnet is ensured.

The present invention provides an automobile interior trim film laminating device, which relates to the technical field of automobile interior trim film laminating, and includes: a film laminating operation table, a controller, a film laminating suction and pressing frame, a film laminating top covering frame, a film laminating driving frame, a film laminating driving cylinder, a film rack, a film laminating lead-out frame, a cutting frame, an extension table, a suction and pressure pump, a pressing end seat and a wetting box; the controller is fixedly installed at a position near a corner at the top of the film laminating operation table; in the middle of the top plane of the film laminating operation table, a "mouth"-shaped film laminating suction and pressing frame is vertically embedded, and the upper end of the film laminating suction and pressing frame is fixedly sleeved with a film laminating top covering frame. When the film laminating lead-out frame moves towards the pressing end seat along with the film rack, the extrusion block extrudes the pressing plate to move outwards, and the device can automatically complete the whole process from film material release, flattening, covering to cutting, reducing the cumbersome and error of manual operation and making the production process smoother and more efficient.

The invention relates to an antistatic film and a preparation method thereof, and belongs to the technical field of polymer film materials. The antistatic film is prepared from the following components in parts by weight: 100 parts of PP resin, 5 to 8 parts of hydrogenated petroleum resin, 4.5 to 5.5 parts of conductive filler, 1.2 to 1.6 parts of antistatic additive, 0.1 to 0.12 part of antioxidant, 0.08 to 0.1 part of light stabilizer and 2.5 to 3 parts of lubricant, the preparation method comprises the following steps: carrying out amine ester exchange on methyl acrylate and diethylenetriamine under the catalysis of sodium hydride to prepare a double-bond-terminated amide compound, namely an amidated matrix, carrying out addition on mercaptopropyltrimethoxysilane and the amidated matrix under the initiation of ultraviolet radiation, and introducing a methoxysilane structure to the end part of the amidated matrix for modification, so as to obtain the antistatic additive. Finally, bromopropane and residual amido of the silanization intermediate are subjected to quaternization treatment, and the antistatic auxiliary is obtained. The film material is endowed with good antistatic performance and packaging performance through the interaction of the antistatic auxiliaries.

The invention discloses a lead zirconate titanate film material with an ultrahigh voltage coefficient as well as a preparation method and application of the lead zirconate titanate film material, and belongs to the technical field of electronic material development and film materials. The preparation of the lead zirconate titanate film material is realized by adopting a sol-gel spin-coating method and controlling the annealing times. The piezoelectric film material provided by the invention can be directly deposited on a Si substrate coated with metal Pt, does not need to introduce an additional buffer layer or dope any element, is short in annealing time and simple in preparation process, all required raw materials are cheap and easy to obtain, and the piezoelectric film material particularly has high orientation degree, low coercive voltage and excellent ferroelectric and piezoelectric properties, is suitable for preparing large-size (2-4 inches) wafers, and has a wide application prospect. And huge application potential is shown in the field of piezoelectric micro-electro-mechanical system (MEMS) devices.

The present disclosure provides a unit dose detergent comprising a water-soluble film material comprising a first compartment that is adjacent to a second compartment and separated by at least one layer of the film. The first compartment encloses a liquid composition comprising a non-aqueous solvent, and the second compartment encloses a powder composition comprising a pigment and at least one additive selected from a salt, a flow aid, acid, enzyme, chelating agent, a polymer, and any combination thereof; such that at least one of the liquid composition and the powder composition comprises a surfactant. Also provided is a method of preparing the powder composition for use in the unit dose detergent. The method includes adding the pigment to a salt to provide a pigment-salt combination and adding a flow aid to the pigment-salt combination to form the powder composition.

The automatic card packaging equipment comprises a machine frame, a printer is arranged on one side of the machine frame, a card collecting box is arranged on the other side of the machine frame, and a welding station, a correcting station, a base card material box assembly, a film material temporary storage station, a film material selecting and turning-over mechanism and a film material conveying mechanism are sequentially arranged on the machine frame. The utility model has the positive effects that the printing of the front and back film materials can be completed, the turnover can be performed as required, the film materials can be picked up immediately after being printed, and welding and packaging can be realized by matching with a base card without additional manual assistance, so that the production and manufacturing steps are simplified, the labor intensity of workers is reduced, and the production efficiency is improved. And the manufacturing efficiency of the whole card is effectively improved.

The invention relates to solvent-based photosensitive dry film acrylic resin for a PCB (Printed Circuit Board) and a preparation method of the solvent-based photosensitive dry film acrylic resin, and belongs to the technical field of photosensitive dry films. The solvent-based photosensitive dry film acrylic resin for the PCB comprises the following components: modified acrylic resin, modified white carbon black, a reaction monomer, a photoinitiator, an antioxidant, a defoaming agent and deionized water, according to the solvent-based photosensitive dry film acrylic resin for the PCB, the white carbon black is modified, an organic group with higher thermal stability is introduced, and meanwhile, the dispersity and compatibility of the white carbon black in a system are improved by utilizing the compatibilizer, so that the mechanical strength and high-temperature resistance of a film material are remarkably enhanced.

The invention discloses a preparation method and application of a CuBi2O4 film electrode, and belongs to the field of film materials. The preparation method of the CuBi2O4 film electrode comprises the following steps: mixing an aqueous solution of 0.05 mol / L-0. 2 mol / L copper acetate and an aqueous solution of 0.05 mol / L-0. 2 mol / L sodium acetate to obtain an electrolyte I, and obtaining a Cu2O film on FTO (Fluorine-doped Tin Oxide) by adopting an electrodeposition method; adding a coordination agent, KOH and fused salt KNO3 into a 0.05 mol / L-0. 3 mol / L bismuth nitrate solution or adding water to dilute to obtain a solution II; and pulling and dipping the obtained Cu2O film in the solution II, carrying out annealing treatment, washing with deionized water, and drying to obtain the CuBi2O4 film electrode. According to the preparation method disclosed by the invention, Cu2O with uniform surface and good compactness is obtained by regulating and controlling the concentration ratio of cupric acetate to sodium acetate, and the high-quality CuBi2O4 film electrode is prepared by optimizing the concentrations of the coordination agent, the mineralizing agent and the fused salt on the basis.