120results about How to "Good light transmission" patented technology

This invention provides a photocatalytic composite nanoenzyme self-cleaning coating, its preparation method, and its application. Specifically, it includes: preparing solution A with Ca(NO3)2·4H2O and nano-cerium oxide; preparing solution B with (NH4)2HPO4 and hexadecyltrimethylammonium bromide; mixing solutions A and B, and reacting at high temperature to obtain cerium oxide nanoenzyme / hydroxyapatite microspheres; and using (NH4)6Mo7O... 24 Solution M is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solution N is prepared by dissolving Fe(NO3)3·9H2O in deionized water; solutions M and N are mixed to obtain a precursor; the precursor is reacted with cobalt oxide at high temperature to obtain Co / Fe2(MoO4)3; tetraethyl orthosilicate, anhydrous ethanol, deionized water, and ammonia are mixed and sealed for aging; after adding a modifier, it is mixed with cerium oxide nanoenzyme / hydroxyapatite microspheres and Co / Fe2(MoO4)3, sprayed onto the obtained composite coating, and cured at high temperature to obtain a self-cleaning coating. This invention, by loading a photocatalyst and nanoenzyme / hydroxyapatite microspheres onto the surface of a modified SiO2 gel, effectively improves the photocatalytic activity and self-cleaning performance of the coating while maintaining good optical transmittance.

This invention belongs to the field of rock mass engineering technology and provides a three-dimensional fractured rock mass model for visualized grouting observation, including a transparent assembly and a support plate; the support plate and the assembly are detachably connected; the support plate has a semi-closed frame structure, with its bottom edge protruding upwards to form an outer border, and the inner part of the outer border is divided into multiple assembly slots by a grid; the assembly includes multiple assembly groups adapted to each assembly slot; each assembly group has the same number of assembly units, and the assembly units within the same assembly group are coaxially spliced ​​and embedded into the corresponding assembly slots, forming a connected longitudinal fracture group between different assembly groups; a grouting channel penetrating the assembly is set at the intersection of any two longitudinal fractures; the support plate has a docking hole corresponding to the grouting channel. The three-dimensional fractured rock mass model of this invention can freely set the fracture dip direction, dip angle and spatial distribution shape according to actual engineering needs, effectively solving the problem that traditional test models are difficult to reproduce complex fracture boundary conditions.

This utility model relates to the field of drone protective cover technology, and more particularly to a quick-release protective cover for an intelligent obstacle avoidance drone probe. This utility model provides a quick-release protective cover for an intelligent obstacle avoidance drone probe, including a bracket, a drone body, a camera, a protective shell, and pins. The drone body is fixedly connected between the tops of two brackets. A camera is rotatably connected to the front of the drone body. Protective shells are slidably placed on both sides of the camera. Two pins are fixedly connected to the rear of each protective shell. The rear of each pin is inserted into the drone body. By inserting and removing the pins, the protective shell can be installed or removed. This utility model, by setting pins and a slide rail at the rear of the protective shell, and cooperating with the insertion holes and sliding grooves on the drone body, allows the protective shell to slide along the rail and be precisely positioned, avoiding the cumbersome disassembly and assembly problems caused by traditional screw fixing methods. At the same time, the limiting rod and the limiting plate are automatically locked under the action of a torsion spring.

This application relates to the field of nanomaterial assembly technology, and discloses a copper-gold complex nanowire film, its preparation method, and its applications. The preparation method of the copper-gold complex nanowire film includes: dissolving a soluble copper salt, a reducing agent, and sodium dodecylbenzenesulfonate in water to obtain a first precursor solution; dissolving potassium gold cyanide in water to obtain a second precursor solution; slowly adding the second precursor solution to the first precursor solution to carry out a self-assembly reaction; collecting the solid phase; washing, centrifuging, and drying to obtain the copper-gold complex nanowire film. The preparation process of this application is simple, the reaction conditions are mild, the reproducibility is good, the yield is high, and the cost is low, significantly reducing the difficulty of nanowire film formation and realizing the large-scale, low-cost preparation of copper-gold complex nanowire films. The copper-gold complex nanowire film of this application uses copper-gold complex nanowires with uniform size distribution, diameters of 20–40 nanometers, and lengths in the micrometer range as assembly units, exhibiting a high specific surface area and good structural stability.

The invention discloses a dynamic self-repairing PI-based nano protective coating for a crease-free folding screen. The dynamic self-repairing PI-based nano protective coating is prepared from a polyimide matrix, a dynamic cross-linking agent, self-repairing microcapsules, a surface-modified nano inorganic filler and a surface energy regulator, the polyimide matrix is obtained by polymerizing aromatic dianhydride and a diamine monomer containing a flexible chain segment, and the flexible chain segment comprises an ether bond or a methylene chain segment; the shell material of the self-repairing microcapsule is polyurea or polyurethane, and the core material of the self-repairing microcapsule is a polyimide repairing agent; the surface modified nano inorganic filler is SiO2 or Al2O3 nano particles subjected to surface grafting modification by a silane coupling agent. The preparation method has the beneficial effects that the coating prepared by the preparation method simultaneously realizes the basic performances of high hardness, high toughness, high light transmittance and strong adhesion, has the efficient grading self-repairing capability aiming at damages of different scales, and finally passes more than one hundred thousand times of extreme bending fatigue tests; the problems of balance of multi-performance requirements, single repair mechanism and low efficiency in the prior art are solved.

The invention provides a transparent composite material with a sandwich structure and a preparation method thereof, and relates to the technical field of materials. Specifically, the transparent composite material comprises a first panel, a core layer and a second panel which are connected in sequence, the core layer comprises at least one of PC (polycarbonate), PMMA (polymethyl methacrylate), PVC (polyvinyl chloride), PET (polyethylene terephthalate) or PP (polypropylene); the first panel and the second panel comprise a fiber reinforced transparent material, and the fiber reinforced phase comprises at least one of E-alkali-free glass fibers, S-2 glass fibers, R-glass fibers, T-glass fibers, or HS-glass fibers. The transparent composite material has good mechanical strength on the premise of high light transmittance, the core layer provides overall rigidity and shear bearing capacity, the panel material bears bending and pressure loads, the strength of the composite material is improved, and the transparent composite material has good machinability and design freedom degree.

The utility model relates to the technical field of warp knitting machines, and discloses a defective cloth detection device of a warp knitting machine, which comprises a laser broken yarn monitoring device controlled by a warp knitting machine control cabinet and a light auxiliary device for assisting artificial eye detection, the light auxiliary device comprises a strip-shaped lamp and a lampshade, the strip-shaped lamp is fixedly connected with the lampshade, and the light auxiliary device is connected with the warp knitting machine control cabinet. The lampshade is fixed with the warp knitting machine box body; the lampshade comprises an inclined upper plate, a long-strip-shaped lamp fixing side plate and a horizontal lower plate. The lampshade is of an integrated bent structure. And the inclination angle of the inclined upper plate is 40-60 degrees. The laser broken yarn monitoring device is arranged below the horizontal lower plate and fixed to the warp knitting machine rack. According to the utility model, through combination of automatic laser broken yarn monitoring and artificial eye detection secrecy, the photo-assisted device for assisting artificial eye detection is simple in structure, low in cost and very good in use effect, and the combination of the two can effectively improve the weaving quality, so that the production cost is reduced.

The utility model provides a hotel customized lamp with a multifunctional atmosphere adjusting function, which relates to the technical field of lighting equipment and comprises a lamp holder, a plurality of lampshades connected with the lamp holder, LED lamp beads arranged in the lampshades and a rotating mechanism arranged at the bottom end of the lamp holder. The bottom ends of the LED lamp beads are connected with the adjusting mechanism, and the adjusting mechanism comprises a light modulator module and a color adjusting module; the light modulator module is used for controlling the brightness of the LED lamp beads; the color adjusting module is used for controlling the light color of the LED lamp beads; the rotating mechanism is movably connected with the effect lamp, and the effect lamp is used for creating a preset atmosphere; according to the utility model, through the arrangement of the light modulator module and the color adjusting module, the brightness of the LED lamp beads and the light color can be controlled respectively, the diversified atmosphere creation requirements of hotels can be met, and the experience feeling of customers is improved.

The utility model discloses a fire-fighting smoke exhaust window capable of being opened by 70 degrees, and relates to the technical field of fire-fighting smoke exhaust windows. The aluminum alloy window comprises a latticed structure formed by aluminum alloy cross beams and aluminum alloy stand columns, and a plurality of opening windows are fixedly connected into grids formed by the aluminum alloy cross beams and the aluminum alloy stand columns. A plurality of steel pipes are fixedly connected to the intersection points of the aluminum alloy cross beams and the aluminum alloy stand columns in an inserted mode, a plurality of fixed windows are connected between the steel pipes through hardware, and a flat curtain wall is formed. The use of the aluminum alloy decorative pressing plate not only enhances the aesthetic degree of the curtain wall, but also provides a good protection effect, the arrangement of the opening window and the fixed window meets the requirements of ventilation, lighting and visual field of the curtain wall, the opening window can be produced in a pre-assembly mode and can be quickly mounted after arriving at the site, and the production cost is reduced. And a user can conveniently ventilate in the use process.

A keyboard includes a bottom plate, a plurality of keys, and a backlight module. The bottom plate has a short axis direction and a long axis direction. The keys are disposed on the bottom plate. The backlight module is disposed on one side of the bottom plate. The backlight module includes a light shielding sheet, a light guide plate, and a reflective sheet. The light shielding sheet includes an upper surface and a lower surface, and the upper surface faces the bottom plate. The light guide plate is disposed on the lower surface of the light shielding sheet. The light guide plate includes a plurality of light guide structures, and the light guide structures correspond to the keys, respectively. Each of the light guide structures includes a ring-shaped portion and at least one continuous fold line portion. The continuous fold line portion is connected to the ring-shaped portion, and the ring-shaped portion is formed by a plurality of bending portions. The reflective sheet is disposed below the light guide plate.

This invention relates to the field of microscopy and discloses an inverted microscope, including a base with an eyepiece for human observation, an objective lens for magnifying objects rotatably connected to the base, an illumination lamp for increasing brightness, and a transparent stage for placing samples, positioned directly above the objective lens and below the illumination lamp, all fixedly connected to the base via a bracket. The base also includes a cleaning assembly, a dust removal assembly, and a sweeping assembly. This invention effectively avoids the problem of difficulty in removing dust and impurities remaining on the stage, which can affect the stage's light transmittance. Furthermore, the cleaning process on the stage surface also removes dust from the objective lens, improving the device's practicality.

This application relates to the field of billboard technology and discloses an easily replaceable elevator billboard, including a mounting frame. Fixed shafts are rotatably connected to both sides of the inner cavity of the mounting frame. A cover plate is fixedly connected to one end of each fixed shaft. Strip blocks are fixedly connected to both ends of the bottom of the cover plate. Multiple springs are fixedly connected inside each strip block. A locking block is fixedly connected to one end of each spring. A clamping plate is fixedly connected to the bottom of each locking block. A positioning block is provided at the bottom of the clamping plate. The positioning block is fixedly connected to the mounting frame. The advertisement is quickly clamped by the cooperation of the springs and the clamping plate. When installing the advertisement, pressing down on the cover plate compresses the springs, and the clamping plate clamps the advertisement. When replacing the advertisement, lifting the cover plate restores the springs' deformation, and the clamping plate releases, making the operation simple. Simultaneously, the combination of hook and loop fasteners enhances the stability of the cover plate after it is closed, preventing the advertisement from falling off. The overall structure improves the efficiency of advertisement replacement and ensures a secure fixation.

A semiconductor processing device and its base support assembly include a central support pillar and at least three edge support pillars. The central support pillar coincides with the central axis of the base, limiting base eccentricity after heating and solving the eccentricity problem caused by the different linear expansion of the support pillar and the base. By reducing the cross-sectional area of ​​the central support pillar, the influence of light refraction and reflection on the thermal radiation optical path of the base is reduced. By reducing the contact area between the support pillar and the base, temperature conduction is reduced, thereby improving temperature uniformity. Each support pillar includes an upper pillar and a lower pillar made of different materials. The light absorption rate of the upper pillar is the same as or similar to that of the base, making the temperature difference between the upper pillar and the base approach zero, ensuring good temperature uniformity of the base. The upper pillar has extremely low thermal conductivity, which can block heat conduction from the upper pillar to the lower pillar, reducing heat loss, ensuring heat balance of the base, and improving the temperature distribution uniformity of the substrate.

This invention provides a transparent conductive film with excellent light transmittance in the near-infrared region. The transparent conductive film of this invention sequentially comprises a conductive layer, a substrate, and a transmittance adjustment layer. The transmittance adjustment layer includes an ultraviolet-curable resin, solid particles, and hollow particles, wherein the average particle size of the solid particles is less than 100% of the average particle size of the hollow particles.

The invention discloses an optical monomer and a preparation method thereof, a resin mixture and application, the molecular structure of the optical monomer takes an aromatic skeleton or an aliphatic skeleton as a center and extends outwards to form a branched chain with a hexa-mercapto functional group, the aromatic skeleton has certain rigidity, the aliphatic skeleton has flexibility, and the molecular structure is uniform. Therefore, the optical monomer has ultrahigh refractive index, high light transmittance and good heat resistance.

This invention discloses a fluorinated polyimide containing phenyl anthracene and its preparation method, belonging to the field of polymer materials technology. The fluorinated polyimide containing phenyl anthracene has the following molecular structure: by introducing asymmetric phenyl anthracene structural units with trifluoromethyl side groups, flexible ether bonds, and twisted non-coplanar structures into the polymer backbone, this polyimide possesses excellent comprehensive properties, such as superior solubility, heat resistance, optical properties, mechanical properties, crystallinity, dielectric properties, and hydrophobicity.

The invention discloses a circulating tumor cell physicochemical screen and application thereof. The circulating tumor cell physicochemical screen comprises a body, a reaction tank is arranged in the body, at least two liquid inlets are formed in one end of the reaction tank, a liquid outlet is formed in the other end of the reaction tank, a plurality of reaction areas are arranged between the liquid inlets and the liquid outlet, and a plurality of micro-columns are arranged in each reaction area; along the direction from the liquid inlet to the liquid outlet, the distance between the micro-columns in each reaction area is gradually reduced. The circulating tumor cells are sorted in a mode of combining physical blocking and chemical adsorption, the distance between the microcolumns in each reaction area is gradually reduced, screening of the CTC cells is facilitated, further observation and judgment are also facilitated, compatibility to various coloring agents is good, and the application range is wide.

This utility model provides an LED display module mask, including a mask body, which comprises two sets of first mask plates and a second mask plate. The second mask plate is located between the two sets of first mask plates, and multiple sets of connecting ribs are provided between the second mask plate and the two sets of first mask plates. The second mask plate is integrally formed with the two sets of first mask plates through the multiple sets of connecting ribs. Multiple sets of lamp holes are provided on the first mask plate, the second mask plate, and the connecting ribs. Multiple sets of buckles are provided on the top surface of the connecting ribs. This LED display module mask has a reasonable structural design, which can effectively protect the LED module. Its integrated mask body can resist the intrusion of external impurities, the lamp holes ensure the orderly arrangement of LED beads to optimize the display effect, and the buckles on the connecting ribs facilitate a secure connection with other components. In addition, the mask's good heat dissipation design can dissipate heat in time, ensuring the stable operation of the LED module and greatly improving the practicality and reliability of the product.

The utility model discloses a modularized chair, which relates to the field of furniture structures and comprises a chair back main body, armrest main bodies, chair leg main bodies and a seat cushion plate, the chair back main body, the armrest main body and the chair leg main body are respectively formed by splicing a first chair back module and a second chair back module, splicing a first armrest module and a second armrest module as well as splicing a first chair leg module and a second chair leg module. According to the scheme, the modular structure below the chair can be clearly displayed, the ornamental value of the chair is increased, the first splicing blocks and the second splicing blocks are combined in a mutual lap joint, fitting and meshing mode to form the structure of the chair, the chair comprises a backrest, armrests, chair legs and other components, the module connection mode is achieved through customized hole site design, and the modular structure is more attractive. And the connecting sticks with different sizes are used for stable connection, so that the modules can be easily disassembled and recombined.

The application provides a mask plate, a preparation method of a convex lens, a convex lens and a display panel, relates to the technical field of display, and is used for solving the problem that the preparation process of the microlens is not mature. The mask plate comprises at least one pattern unit, the pattern unit comprises a plurality of light shielding parts, at least part of the light shielding parts are located at the center of the pattern unit, and the plurality of light shielding parts are arranged in a radial manner away from the center of the pattern unit; adjacent light shielding parts have a light transmission port, and the opening size of the light transmission port gradually increases in the direction away from the center of the pattern unit. The application facilitates the preparation of the convex lens in the display panel, and enriches the preparation process of the convex lens.

The invention discloses a high-light-transmittance hydrophilic modified polypropylene composite material for vehicles and a preparation method of the high-light-transmittance hydrophilic modified polypropylene composite material. The high-light-transmittance hydrophilic modified polypropylene composite material comprises the following components in parts by weight: 70-95 parts of hydrophilic polypropylene, 5-25 parts of a toughening agent, 0.5-2 parts of an antistatic agent, 0.1-1 part of an epoxy resin aid, 0.1-1 part of an antioxidant and 0-2 parts of other aids. Homo-polypropylene is grafted with the ethylene-vinyl acetate copolymer through melting, so that polar groups are obtained, and the hydrophilic performance of the prepared composite material is improved. The high-rigidity polypropylene resin is adopted as a matrix and is compounded with the toughening body SEBS, so that the prepared composite material has low density, high rigidity and impact resistance.

This invention belongs to the field of photoresist technology, specifically relating to a compound containing a multifunctional polysiloxane structure and its applications. The structural formula is selected from general formula I or general formula II. Based on an organosiloxane polymer, this invention introduces multifunctional reactive functional groups into the polymer structure through transesterification and free radical addition reactions. The hydrophilic / hydrophobic properties, temperature resistance, and chemical resistance can be improved by adjusting the types of monomers introduced. This compound is used to prepare a photoresist composition with a solvent, a monomer with ethylene unsaturated bonds, a photosensitizer, and other additives. This photoresist exhibits advantages such as low dielectric constant, good adhesion, high residual film rate, good UV transmittance, good patterning, and good chemical resistance.

The invention discloses a TSS-SBFO coating agent for storage and preservation of perishable fruits and a preparation method of the TSS-SBFO coating agent. The coating agent prepared from the sphaeros gum, the artemisia desertorum gum, the silk fibroin peptide, the sea buckthorn fruit oil and the glycerol can be used for storage and preservation of perishable fruits, and has good oxidation resistance. The coating agent prepared by the invention can be directly coated on the surfaces of perishable fruits in a soaking manner, the use method is simple, good light transmittance can be maintained while the ultraviolet transmittance is reduced, and the effects of keeping fresh, resisting oxidation and maintaining a good state of the fruits can be achieved.

This invention provides a self-cleaning coating composition, a self-cleaning coating, and a method for preparing the same. The self-cleaning coating composition comprises a carbon nanotube dispersion, a first nano-silica dispersion, a second nano-silica dispersion, and hexamethyldisilazane; wherein the first nano-silica dispersion comprises first nano-silica, the second nano-silica dispersion comprises second nano-silica, and the average particle size difference between the first and second nano-silica is 40–60 nm. This invention utilizes two different hydrophobic nano-silica particles with an average particle size difference within this range to construct a suitable nano-roughness, while simultaneously increasing the porosity of the coating by adding a small amount of nanotubes. The roughness construction enhances the self-cleaning performance of the coating, while the micropore construction reduces light reflection, improves the light transmittance of the self-cleaning coating, and provides excellent self-cleaning function.

This utility model discloses a heating element-embedded defogging glass sight glass, relating to the field of glass defogging technology. The utility model includes a mounting base; the front of the mounting base has a mounting opening, inside which a composite sight glass body is placed; a clamping frame is fixedly connected to the front of the mounting base, and a pop-out component is provided on the back of the mounting base; the pop-out component includes an outer frame, inside which multiple evenly distributed mounting holes are formed along the circumference, and each mounting hole has a movably fitted push rod; a sealing plate is fixedly connected to the side of the outer frame facing away from the mounting base, and a push-out spring is movably fitted inside the mounting holes; the composite sight glass body includes two transparent sight glass panes, with a heating element sandwiched between the two transparent sight glass panes. This utility model, by combining a composite sight glass body with an embedded heating element and an anti-fogging composite film, can quickly remove fog; furthermore, the pop-out component allows for quick assembly and disassembly of the composite sight glass body, thereby improving maintenance efficiency.

This invention discloses a dark-colored velvet-textured ceramic slab, a base glaze, and its preparation method. The dark-colored velvet-textured base glaze is prepared by ball milling according to the following mass ratio of material: water: carboxymethyl cellulose: sodium tripolyphosphate: 100:36:(0.1-0.2):(0.3-0.5). The material of the velvet-textured base glaze is prepared from the following components in parts by weight: 3-8 parts wollastonite, 5-10 parts dolomite, 10-15 parts strontium carbonate, 2-5 parts calcined talc, 30-40 parts potassium feldspar, 5-10 parts nepheline, 5-10 parts calcined kaolin, 5-15 parts quartz, 1-5 parts white corundum, 3-8 parts calcined zinc oxide, and 10-15 parts matte transparent frit. The matte transparent frit includes the following components in the following mass percentage: SiO2. The composition is 55-60%, Al₂O₃ 12-15%, K₂O 2-3%, Na₂O 3-4%, CaO 20-25%, and the calcination vector of the matte transparent frit is 1%-5%. This solution improves the light transmittance of the glaze layer, enhances the transparency, and maintains a uniform and dispersed surface gloss without crystallization, resulting in a glaze surface with a velvety soft feel.

This utility model belongs to the technical field of decorative countertops, specifically relating to a light-emitting decorative countertop and furniture containing it. A light-emitting decorative countertop includes a stone-look tabletop, an acrylic frame, modular light sources, and a base plate. The stone-look tabletop includes a main tabletop and side tabletops connected around the main tabletop, forming a recessed tabletop. The acrylic frame is installed on the inner wall of the recessed tabletop and is tightly fitted to the main tabletop and side tabletops. The base plate is located inside the acrylic frame, and an installation space for accommodating the modular light source is formed between the base plate and the stone-look tabletop. The modular light source is installed on the base plate. The modular light source can emit light outwards from the main tabletop and the surrounding side tabletops. This solves the problem that light-emitting tabletops are generally too thick and cannot transmit light from the sides.

The present application provides a keyboard, which includes a bottom plate, a plurality of keys and a backlight module. The bottom plate has a short axis direction and a long axis direction. The keys are arranged along the long axis direction on the bottom plate and are arranged into a plurality of columns. The backlight module is arranged on one side of the bottom plate. The backlight module includes a light shielding sheet, a light guide plate and a reflecting sheet. The light shielding sheet includes an upper surface and a lower surface, and the upper surface faces the bottom plate. The light guide plate is arranged on the lower surface of the light shielding sheet. The light guide plate includes a plurality of long slots, and each of the long slots has at least one long side. The long side is parallel to the long axis direction, and each of the long slots has a central axis, which is located between the keys of two adjacent columns. The reflecting sheet is arranged below the light guide plate.

This invention relates to a multifunctional bioactive dental bulk filling composite resin and its preparation method. The composite resin comprises an organic resin matrix and an inorganic filler; the organic resin matrix comprises polymerizable resin monomers and a photoinitiator system, the polymerizable resin monomers comprising dimethacrylate monomers and E-POSS; the inorganic filler comprises nMgO and sSiO2 with a silanized surface. The preparation method includes the following steps: preparing nMgO powder using a sol-gel method combined with a gradient calcination process; preparing submicron-sized sSiO2 using the Stöber method and subjecting it to surface silanization treatment to obtain silanized sSiO2; mixing the polymerizable resin monomers, E-POSS, and the photoinitiator system, stirring in the dark until a homogeneous resin matrix is ​​formed; adding the obtained nMgO and silanized sSiO2 to the resin matrix in a specific ratio and mixing and dispersing evenly to obtain an uncured paste-like composite resin.

The invention relates to the technical field of photovoltaic devices, in particular to a composite electrode, a flexible perovskite photovoltaic device thereof and a packaging method. According to the technical scheme, the composite electrode is of a multi-layer structure and sequentially comprises a stress buffering and interface bonding layer, a conductive grid layer and a self-repairing functional layer from bottom to top. A buffer interface with modulus gradient transition is constructed, a three-dimensional composite conductive network is formed by reducing graphene through a silver nanowire / carbon nanotube / chemical vapor deposition method, a self-repairing functional layer integrating a dynamic disulfide bond and microcapsule dual mechanism is combined with an atomic layer deposition inorganic layer and an organic buffer layer for composite packaging, and the three-dimensional composite conductive network and the self-repairing functional layer are formed. The key problems of mechanical mismatch between an electrode and a substrate in a flexible perovskite photovoltaic device, easy damage of a conductive network under bending and stability reduction caused by water and oxygen invasion are systematically solved, so that high photoelectric efficiency is ensured, and repeated bending resistance, damage self-repairing capability and long-term environmental stability of the device are remarkably improved.