992 results about "Film base" patented technology

The invention relates to an antistatic PET (Polyethylene Terephthalate) base film for preparing a polaroid release film and a preparation method thereof, the release film base film is prepared by taking an optical-grade PET slice as a main body, adding modified PET with a specific structure and a modified SiO2 filler, and carrying out co-extrusion casting, a unique three-section stretching process and coating with a coating liquid. According to the invention, material modification and process improvement are carried out, specifically, an optical-grade PET slice is taken as a main body material, modified PET and a modified SiO2 filler with a specific structure are added, a film is prepared through co-extrusion casting and a unique three-section stretching process, and then the surface of the film is coated with a layer of antistatic coating liquid, so that the antistatic film is obtained. The finally prepared base film has low alignment angle, low transverse hot shrinkage rate and high surface adhesion, keeps the characteristics of high light transmittance and low haze of an optical-grade polyester film, endows the film with certain antistatic property, and is particularly suitable for being used as a release film of a high-end polaroid.

The invention relates to an antistatic MLCC release film base film and a preparation method thereof. The antistatic MLCC release film base film is prepared by melt blending and biaxial stretching of PET master batch, an antistatic composition and a nano filler, wherein the antistatic composition is prepared by compounding modified PET-PEG and thiophene modified aromatic polyamide; the nano filler is prepared by carrying out melt extrusion on KH550 modified talcum powder and MAH-g-PET (maleic anhydride-grafted polyethylene terephthalate). The antistatic composition disclosed by the invention has the beneficial effects that the antistatic composition is formed by interweaving two polymers, and a stable three-dimensional conductive network is constructed in the PET film, so that the antistatic performance is more efficient, lasting and stable. In addition, through chemically bonded modified talcum powder, the smoothness and low roughness are provided, and meanwhile reinforcing and toughening are achieved; and the single-layer extrusion process can realize ultrathin thin film, the production process is simplified, and the production cost is greatly reduced.

The invention relates to the technical field of light guide film light intensity distribution regulation and control methods based on microstructure optimization, discloses a light guide film light intensity distribution regulation and control method and system based on microstructure optimization, and aims at solving the problems that an existing light guide film is fixed in light intensity distribution, insufficient in optimization precision and difficult to customize. The method comprises the following steps: constructing a light guide film model and a target light intensity distribution diagram, initializing microstructure parameters and simulating to obtain simulated light intensity distribution; deviation is calculated and serves as optimization algorithm input, and microstructure parameters are iteratively adjusted through a particle swarm optimization algorithm based on gradient guidance until convergence is met; and converting the optimized microstructure parameters into a manufacturing instruction. Through the scheme, reverse high-precision customization of light intensity distribution of the light guide film can be realized, the design efficiency, the light energy utilization rate and uniformity are remarkably improved, and the research and development period is shortened.

The invention discloses a preparation method of an acid-resistant polyquaternary ammonium membrane based on a Porxitch interfacial polymerization reaction. The preparation method comprises the following steps: dissolving an amine monomer in a water-phase solvent to form a water-phase solution; dissolving a bromomethyl monomer in an organic phase solvent to form an organic phase solution; after the base membrane is soaked in the water phase solution for a period of time, the water phase solution is removed, and the water phase solution remaining on the surface of the base membrane is removed; coating the organic phase solution on the surface of a base membrane, and carrying out interfacial polymerization reaction for 1-15 minutes at the high temperature of 50-90 DEG C, so as to prepare a polyquaternary ammonium membrane on the base membrane; and washing the surface of the polyquaternary ammonium membrane with an organic solvent to remove residual reactants, and then carrying out heat treatment in a drying oven to obtain the acid-resistant polyquaternary ammonium membrane.

The invention relates to the technical field of transmission membranes, in particular to a transmission membrane based on dithienylethene and a preparation method of the transmission membrane. The transmission film comprises a base film and light-operated molecules, the base film is coated with the light-operated molecules, and the light-operated molecules have light response groups. A detection result shows that after ultraviolet irradiation, the transmission film can quickly realize complete conversion from an open loop to a closed loop; after visible light irradiation is recovered, the transmission film can efficiently and reversibly recover to an open-loop state. In addition, the transport membrane has a high on-off ratio to five ions of sodium, potassium, lithium, magnesium and calcium. The transmission membrane based on dithienylethene, which is prepared by taking terminal amino-modified dithienylethene as a basic unit, not only has abundant nano-channels, but also is endowed with the characteristic of regulating and controlling the opening and closing of the nano-pore by a photoresponse functional group, and the closing and opening of an ion channel can be accurately regulated and controlled through the alternate irradiation of ultraviolet light and visible light, so that the transmission membrane has a good application prospect. And the controllability of light-operated ion transmission is finally realized.

The invention provides a packaging adhesive film for a perovskite assembly and a photovoltaic assembly and application thereof. The adhesive film comprises organic ammonium salt and a packaging adhesive film base material, wherein the organic ammonium salt is selected from one or more of diammonium halogen ammonium salt, phenyl halogen ammonium salt and thiophene halogen ammonium salt. According to the invention, the organic ammonium salt is used as the passivation material and is combined with the adhesive film matrix material to prepare the packaging adhesive film, so that the process step of post-passivation of the perovskite assembly and corresponding expensive vacuum equipment can be omitted, and the packaging cost is greatly reduced while the service life of the perovskite assembly is prolonged.

The invention discloses a bionic anti-drag protective film based on a surface micro-nano structure and a preparation method of the bionic anti-drag protective film, and relates to the technical field of anti-drag film preparation. According to the preparation method, the high-strength nitrogen-containing thermoplastic polyurethane film layer with the flame retardant property is prepared, one layer is coated with the hyperbranched polyurethane coating, the drag reduction functional layer with the microstructure is formed through embossing and photo-thermal dual curing, and the hyperbranched polyurethane coating can form a high-density cross-linked network during curing, so that the drag reduction performance is improved; according to the present invention, the hyperbranched polyurethane coating material has characteristics of good mechanical property and good weatherability, the hyperbranched structure can assist in dispersion of shrinkage stress and maintenance of coating surface flatness during heating, and the hyperbranched polyurethane coating material further contains nitrogen rings so as to provide the coating material with certain fire resistance.

The invention discloses a light conversion film based on a benzotriazole compound as well as a preparation method and application of the light conversion film. The benzotriazole compound is a compound as shown in a formula I, and the definition of each group in the formula I is described in the specification. According to the invention, cyano modification is carried out on the benzotriazole compound used as the light conversion agent, so that the transmission of ultraviolet light is further reduced, the external quantum efficiency response of the heterojunction cell is improved, and the power of the assembly is improved.

The invention provides an anti-counterfeit label film coating tension control method and system, and relates to the technical field of film coating tension control. The method comprises the following steps: acquiring surface image data of a substrate film; identifying and acquiring real-time coordinates of the feature points; calculating the local strain of the substrate film according to the real-time coordinates of the feature points; calculating to obtain a strain deviation; calculating the time required by the film section corresponding to the strain deviation to reach the film coating station as the adjustment time; calculating a tension compensation amount according to the strain deviation; and within the adjusting time, the tension control unit adjusts the tension applied to the substrate film according to the tension compensation amount. According to the method, through accurate local strain measurement and prospective tension adjustment, it is ensured that each section of film is kept in an ideal strain state at the moment of film coating, so that the integrity and functional effectiveness of optical microstructures such as diffraction gratings are thoroughly protected, and the technical problems in anti-counterfeit label film coating production are effectively solved.

The invention provides a pixelated flexible composite scintillation thin film based on a template-assisted nanoimprint technology and a preparation method and application of the pixelated flexible composite scintillation thin film. The preparation method of the pixelated flexible composite scintillation film comprises the following steps: preparing the flexible composite scintillation film; and constructing a periodic nanometer photon structure pattern on the flexible composite scintillation film by using a template-assisted nanoimprint technology to obtain the pixelated flexible composite scintillation film. According to the preparation method of the pixelated flexible composite scintillation film based on the template-assisted nanoimprint technology, the process is controllable, the preparation process flow is simplified, the production cost is reduced, the spatial resolution of the flexible composite scintillation film can be effectively improved, the imaging performance of the flexible scintillation film is greatly improved, and the application prospect is wide. Wide application prospects are realized in the fields of high-resolution X-ray imaging, radiation detection and wearable medical devices.

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 present disclosure relates to methods and apparatus for characterising an interaction between a stimulus and a liquid thin film. An aspect of the disclosure provides a spectroscopic ellipsometry apparatus for characterising an interaction between a stimulus and a liquid thin film, the apparatus comprising: a stimulator, configured to provide a stimulus to a liquid thin film disposed on a volume of liquid to generate a wave in the liquid thin film, the liquid thin film and the volume of liquid having an interface therebetween, light beam optics for illuminating an area of the liquid thin film with a light beam, the light beam having a first polarisation, and a light collector coupled to a detector for receiving the light beam after reflection by the liquid thin film, the light beam having a second polarisation after reflection by the liquid thin film; a wave measurement module coupled to the light collector and configured to provide surface wave data to characterise a Lucassen wave in the liquid thin film based on the second polarisation.

The invention belongs to the technical field of food packaging and fresh-keeping materials, and discloses an ethylene adsorption and pH / pectinase double-response intelligent antibacterial composite film as well as a preparation method and application thereof. The composite film comprises a base film and a functional carrier distributed in the base film, the functional carrier is a material ZIF-8-cinnamyl aldehyde-pectin capable of adsorbing ethylene and responding to pH and pectin, and the base film comprises a film-forming polymer and a natural antibacterial agent. According to the composite film, efficient adsorption of ethylene released in the storage period of fruits and vegetables is achieved through a porous structure of ZIF-8, meanwhile, a synergistic effect is formed by an acid environment naturally generated in the fruit and vegetable ripening and rotting process and pectinase, and intelligent slow release of cinnamyl aldehyde loaded on ZIF-8 is accurately triggered; cinnamyl aldehyde can form a double-channel intelligent antibacterial system with the natural antibacterial property of chitosan in a film base material and the metal ion antibacterial property of ZIF-8, maturation and aging of typical respiratory climacteric fruits and vegetables can be remarkably delayed, and the antibacterial film has extremely high industrial application potential.

The invention discloses a high-barrier degradable vegetable and fruit preservative film based on multi-layer compounding and a preparation method thereof, belongs to the technical field of food packaging materials, and aims to solve the technical problem that the barrier property, the mechanical property and the antibacterial property of the degradable vegetable and fruit preservative film in the prior art need to be further improved. The degradable vegetable and fruit preservative film comprises a first layer, a second layer and a third layer which are sequentially laminated, and the first layer is prepared from, by weight, 65-75 parts of polylactic acid, 4-8 parts of maleic anhydride grafted polylactic acid, 2-4 parts of modified carbon nitride, 1-3 parts of alizarin microcapsules, 3-6 parts of modified lignin and 1-2 parts of auxiliary additives; through the synergistic effect of the modified carbon nitride, the alizarin microcapsules and the modified lignin, the barrier property, the mechanical property and the antibacterial property of the degradable vegetable and fruit preservative film are further improved.

This case involves a base film for a composite current collector based on SiO2 nanocomposite modification and its preparation method. The present invention forms modified auxiliary particles by synergistically modifying nano-SiO2 with aluminum hypophosphite, montmorillonite, etc., and extrudes them together with PET masterbatch. At the same time, a modified coating containing nano-SiO2 is coated on the surface of the base film, which significantly improves the mechanical properties, thermal stability and flame retardancy of the base film.

The invention discloses a method for testing the light aging resistance of a color changing film, and relates to the technical field of color changing films. The method comprises the following steps: matching a plurality of performance influence factor tolerance spaces based on a key parameter set; performing test risk analysis on the plurality of performance influence factor tolerance intervals, and determining a plurality of test risk factors; calling a historical test data set of the target color change film, and determining a historical test database; on the basis of the historical test database, the application distortion probability of the performance influence factors is calculated in combination with the multiple test risk factors, and multiple application distortion probabilities are obtained; performing performance test scheme balanced identification on the plurality of performance influence factor tolerance spaces, and determining a target performance test scheme; and carrying out light aging resistance test on the target color changing film based on the target performance test scheme. The technical problem that in the prior art, the reliability of the light aging resistance test of the color changing film is poor is solved, and the technical effect of improving the reliability of the light aging resistance test of the color changing film is achieved by optimizing the performance test scheme.

The application discloses a preparation method of a high-density and high-stability conductive polymer film based on electrochemical polymerization, and comprises the following steps: using an oxidant solution and a BFDO monomer solution to pretreat a formed foil to obtain a working electrode, then immersing the working electrode and a reference electrode into an electrolyte to perform electrochemical oxidation polymerization, and obtaining the high-density and high-stability conductive polymer film based on electrochemical polymerization. The pretreated formed foil containing N-type conductive polymer PBFDO is prepared by using a chemical in-situ polymerization method on the formed foil, and when the pretreated formed foil is applied in the field of capacitors, the conductivity and electron transport capacity of the capacitor can be improved, and the stability problem caused by the coupling of positive and negative charges in the traditional capacitor is greatly improved.

The invention discloses a reconstituted tobacco preparation method based on a compound enzyme technology, which comprises the following steps: carrying out surface impurity removal pretreatment on a reconstituted tobacco sheet base to obtain a standby sheet base; dissolving cellulase and pectinase in water according to a certain mass ratio to prepare an enzyme solution; the preparation method comprises the following steps: spraying a citric acid-disodium hydrogen phosphate buffer solution to the surface of a standby film base, then spraying an enzyme solution to the surface of the standby film base, carrying out an enzymatic hydrolysis reaction for 3-5 h under the conditions that the temperature is 40-50 DEG C and the humidity is 50-70%, and then drying the enzymatic hydrolysis film base for 30-50 min at the temperature of 70-80 DEG C. According to the method, a collaborative regulation system of cellulase and pectinase is constructed, the enzymolysis process is optimized, oriented improvement of the sour and sweet taste of the reconstituted tobacco is achieved, the aroma richness is remarkably enhanced, the overall acceptability is greatly improved, the technical problems that in a traditional process, the flavor is single, and enzymolysis regulation is extensive are solved, and the quality of the reconstituted tobacco is improved. And a green and efficient standardized solution is provided for quality upgrading of the reconstituted tobacco.

The invention relates to the technical field of peep-proof film manufacturing, and discloses a high-light-transmittance peep-proof film based on surface modification and a preparation method of the high-light-transmittance peep-proof film. The preparation method comprises the following steps: sequentially carrying out plasma activation, ALD atomic layer deposition and HEMA carboxyl-based layer polymerization on a PET film to obtain a modified PET film; coating the modified PET film with a dispersion liquid prepared from a polystyrene-polymethylacrylic acid solution and graphene quantum dots to form a peep-proof layer; depositing a TiO2 layer and a SiO2 layer on the modified PET film to form a high refractive index layer; diamond particles, MoS2 nanosheets and resin are mixed and coated on the high-refractive-index layer to form the wear-resistant layer. The PET film is modified through plasma activation, atomic layer deposition and free radical polymerization, the physical adsorption limitation of a traditional coating is broken through, chemical covalent binding with a subsequent functional layer is achieved, meanwhile, a light scattering path is optimized by preparing a TiO2 / SiO2 alternating layer, and the peep-proof effect and the optical stability are improved.

The invention discloses a preparation method of a composite current collector base film based on flame-retardant and aging-resistant modified PP and a composite current collector, the method comprises the following steps: 1) preparation of a modified PP master batch: mixing 100 parts by weight of PP resin, 0.5-1.8 parts by weight of a lubricant and 10-25 parts by weight of a flame-retardant and aging-resistant composite filler, and stirring at 100-135 DEG C for 0.5-2 h to obtain the modified PP master batch; (2) carrying out melt extrusion, tape casting and sheet casting to obtain an intermediate sheet; 3) biaxial stretching; and 4) carrying out heat setting, rolling and slitting to obtain the composite current collector base film. The invention provides the PP base film with excellent flame-retardant and aging-resistant performance and good mechanical strength; furthermore, based on the PP base film, the composite current collector is obtained after copper layers are formed on the two surfaces of the PP base film by adopting a conventional water electroplating process, and the copper layers and the PP base film in the composite current collector have high bonding strength, so that the service life of the composite current collector can be effectively prolonged.

Specifically, firstly, montmorillonite (MMT) powder is stripped into a nanosheet layer by using an ultrasonic dispersion technology, a two-dimensional layered structure of the nanosheet layer forms rich nanoscale ion channels, and an efficient path is provided for ion directional migration in salinity gradient power generation; meanwhile, after the cellulose is stripped and dispersed by a DMSO solution, a uniform polymer network is formed, the uniform polymer network is used as a substrate material to improve the mechanical strength of the film, and the interfacial ion adsorption and conduction capability is optimized through hydrophilic groups. When the MMT nanosheet and the cellulose suspension are mixed, the MMT nanosheet and the cellulose suspension form an interpenetrating network structure through physical winding and electrostatic interaction, ordered stacking is achieved through vacuum filtration, and finally the composite film with both ion selectivity and structural stability is formed on the substrate. The preparation process is high in material adaptability, green and controllable in preparation process, high in competitiveness in large-scale production and practical application and beneficial to popularization.

The invention relates to the technical field of food fresh-keeping materials, and discloses a preparation method of an intelligent response degradable fruit and vegetable fresh-keeping film based on a Janus structure, the intelligent response degradable fruit and vegetable fresh-keeping film comprises a hydrophobic layer and a hydrophilic layer, the hydrophobic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid, and the hydrophilic layer is an electrostatic spinning film formed by compounding eugenol-loaded ZIF-8 nano-particles and polylactic acid. The hydrophilic layer is an electrostatic spinning membrane formed by compounding chitosan and gelatin, the surface of the hydrophobic layer is covered with the hydrophilic layer through an electrostatic spinning technology, the ZIF-8 nanoparticles are synthesized through a room-temperature stirring method, and synthesis raw materials are a 2-methylimidazole methanol solution and a zinc nitrate methanol solution. By means of the pH response characteristic of the ZIF-8 nano-particles, pH value change signals generated in the early stage of fruit and vegetable putrefaction can be sensitively captured, loaded antibacterial components are accurately released through ZIF-8 framework dissociation, targeted inhibition on putrefying bacteria is achieved, passive protection is converted into active intervention, the fruit and vegetable putrefaction process is effectively delayed, the fresh-keeping effect is improved, and the fresh-keeping time is prolonged.

The invention discloses an on-line detection method for surface defects of an EVA (Ethylene Vinyl Acetate) adhesive film based on machine vision, which belongs to the technical field of industrial automatic quality detection and comprises the following steps: acquiring multiband image data of the surface of the EVA adhesive film acquired by a preset multi-angle self-adaptive imaging system; performing background difference processing on the multiband image data to generate a difference image; performing adaptive contrast enhancement processing on the difference image to obtain an enhanced image; extracting texture feature data and morphological feature data from the enhanced image to generate a multi-feature data set; performing dynamic weighted fusion processing on the multi-feature data set to generate a defect probability graph; the defect probability graph is input into the layered detection network for processing, a defect detection result is generated, the technical scheme that multi-angle self-adaptive imaging, multi-feature dynamic fusion and the layered detection network are combined is adopted, the defect imaging quality and feature significance can be improved in a self-adaptive mode, and high-speed accurate detection and dynamic optimization of the surface defects of the EVA adhesive film are achieved.

The invention discloses a thin film thickness measurement system, method and device and a computer readable storage medium, and relates to the technical field of thin film thickness measurement, and the system comprises a light source unit which is used for transmitting an initial light source signal; the light splitting unit is arranged on a transmitting path of the initial light source signal and is used for splitting the initial light source signal into a first light source signal and a second light source signal; the imaging objective lens is arranged on an emission path of the first light source signal, a to-be-measured film is placed at a measurement position, and the imaging objective lens is used for irradiating the first light source signal onto the to-be-measured film, forming a measurement signal and returning the measurement signal; the reference signal unit is arranged on a transmitting path of the second light source signal and is used for returning a reference signal under the action of the second light source signal; and the imaging spectrometer is arranged on the reflection path of the light splitting unit and is used for determining the thickness of the to-be-measured film based on the reference signal and the measurement signal returned by the light splitting unit, so that the measurement accuracy of the film thickness is improved.

The invention discloses a preparation method of a water-oxygen barrier film based on a polymer nano composite material. The preparation method comprises the following steps: step 1, organically modifying Laponite; 2, a CTAC modified Laponite-PMMA precursor solution is prepared, and the CTAC modified Laponite-PMMA precursor solution is prepared; step 3, cleaning the flexible substrate and activating the surface of the flexible substrate; 4, depositing a first layer of inorganic thin film on the flexible substrate subjected to cleaning and surface activation in the step 3, and performing surface activation on the first layer of inorganic thin film; step 5, preparing a modified CTAC-Laponite-PMMA composite film layer on the inorganic thin film layer activated in the step 4 by adopting the CTAC modified Laponite-PMMA precursor solution prepared in the step 2; and step 6, depositing a second layer of inorganic film on the modified CTAC-Laponite-PMMA composite film layer to obtain the inorganic / organic / inorganic overlapped structure water oxygen barrier film. The invention also discloses the water-oxygen barrier film prepared by the method, the bending mechanical stability of the water-oxygen barrier film is obviously improved, and research finds that the film still has good water vapor barrier performance after being repeatedly bent for 6000 times.

The invention relates to the technical field of PVB heat-insulating films, in particular to a PVB heat-insulating film based on indium tin oxide and bronze cesium tungsten compounding and a preparation method thereof.The PVB heat-insulating film is prepared from, by weight, 80-120 parts of PVB resin, 20-50 parts of oily plasticizer, 0.1-2.0 parts of silane coupling agent, 0.1-1.0 part of antioxidant, 0.1-1.0 part of ultraviolet light absorber, 1-5 parts of polyethylene glycol derivative and 1-5 parts of compound dispersion slurry, the weight ratio of the indium tin oxide powder to the bronze cesium tungsten powder in the compound dispersed slurry is (5: 5)-(7: 3). According to the PVB heat-insulating film based on indium tin oxide and cesium tungsten bronze compounding and the preparation method, the prepared PVB heat-insulating film has high visible light transmittance and excellent near-infrared light rejection rate, meanwhile, the Faraday cage effect can be effectively avoided, and the signal shielding problem is avoided.

The invention relates to the technical field of film processing, in particular to a temperature-control strong-adhesion assembly line for car cover film production and a compounding technology of the temperature-control strong-adhesion assembly line. The technical problem to be solved by the invention is to provide the temperature-control strong-adhesion assembly line for producing the car cover film and the compounding process thereof, which integrate electrostatic auxiliary lamination, gradient hot pressing and gradient cooling, effectively eliminate bubbles, reduce internal stress and realize high-quality compounding between film layers. A temperature control strong adhesion assembly line for car cover film production comprises a discharging device used for synchronously releasing at least two layers of film base materials to be compounded; the pre-laminating device is arranged at the downstream of the discharging device and is used for primarily laminating at least two layers of film base materials; and the pre-laminating device comprises an electrostatic auxiliary laminating unit and a mechanical extrusion laminating unit. According to the invention, the effects of integrating electrostatic auxiliary lamination, gradient hot pressing and gradient cooling, effectively eliminating bubbles, reducing internal stress and realizing high-quality lamination between thin film layers are achieved.

The invention relates to a method for evaluating the humidity and heat resistance of a packaging adhesive film, and the method comprises the following steps: providing a battery piece, and testing the electrical properties and EL images of the battery piece; the method comprises the following steps: dissolving a to-be-detected packaging adhesive film and sodium salt in a solvent to obtain a mixed solution; coating the battery piece with the mixed solution, and drying to form a salt-containing adhesive film; carrying out damp-heat aging treatment on the battery piece on which the salt-containing adhesive film is formed; after the damp-heat aging treatment, removing the salt-containing adhesive film on the battery piece, and testing the electrical property and EL image of the battery piece; and evaluating the heat and humidity resistance of the packaging adhesive film according to the electrical properties of the battery piece before and after the heat and humidity aging treatment and the change of the EL image. According to the evaluation method, the damp-heat aging resistance of the packaging adhesive film can be rapidly and quantitatively evaluated, the test cost is low, the test period is short, and the efficiency is improved.

The application discloses a kind of covalent organic framework films based on multifunctional catalyst regulation, the film includes functional layer and base film, the functional layer is composed of covalent organic framework nanosheet and cellulose nanomaterial.Its preparation process includes that two kinds of monomers are synthesized covalent organic framework nanosheet dispersion under the regulation of multifunctional catalyst by water-oil phase transfer polymerization method, nanosheet dispersion and cellulose nanomaterial dispersion are blended and dispersed with the volume ratio of 10-20:1, and are filtered on the surface of base film by vacuum assisted layer-by-layer self-assembly process.The multiple regulation of multifunctional catalyst makes the synthesized nanosheet have high aspect ratio and crystallinity, which helps to be assembled into dense and defect-free covalent organic framework film.The application is simple and easy to operate, and has good universality and repeatability.The covalent organic framework film is used for pervaporation seawater desalination, and shows excellent performance and long-period running stability.

The invention belongs to the technical field of computer vision and digital media, and discloses a dome-screen film production method and system based on a high-altitude aerial image. Projecting the multi-view aerial video sequence to a unified spherical coordinate system, and constructing a panoramic space with an overlapping region; performing non-rigid geometric deformation processing on the overlapping region of the panoramic space to generate an intermediate image with aligned pixels; calculating the fusion cost of each pixel point in the overlapping region in the intermediate image, and performing path search based on the fusion cost of each pixel point to generate a dynamic suture line; generating an image mask based on the dynamic suture line, performing multi-scale frequency domain adaptive fusion on the intermediate image by using the image mask to generate a fused panoramic image, and remapping the fused panoramic image into a projection format adaptive to dome screen playing to output; and the real reducibility and the manufacturing quality of the dome film are greatly improved.