108 results about "Pet substrate" patented technology

The present invention relates to the technical field of tackified adhesive films and specifically to a tackified adhesive film. The tackified adhesive film comprises a substrate layer and a UV-tackified adhesive layer applied onto the substrate layer. The UV-tackified adhesive layer is prepared by using a modified polyester resin, which is obtained by the graft polymerization of a hydroxyl-terminated polyester resin, butyl methacrylate, and isocyanatoethyl methacrylate, as a main resin and mixing the main resin with a tackifying resin, a photo-curing agent and the like. The UV-tackified adhesive layer has relatively high cohesive strength and relatively good adhesion to a PET substrate. Before a UV-induced tackification reaction, an initial peel force is not significantly increased with the extension of standing time, so that an adhesive tape can be easily removed without causing damage and contamination such as residual adhesive to an adherend . After the UV-induced tackification reaction, the modified polyester resin can improve the bonding strength between the adhesive tape and the adherend.

The invention relates to the field of enzyme engineering, and provides a BhrPETase variant capable of improving stability through site-specific replacement under the background of Bhr6M (SEQ ID NO: 1) and application of the BhrPETase variant, and the replacement is M57I and / or S184H, preferably double mutation M57I / S184H. The variant shows remarkable thermal stability and storage stability under a unified measurement caliber: the condition t1 / 2 at 90 DEG C is greater than or equal to 400 minutes, the condition t1 / 2 at 70 DEG C is greater than or equal to 7 days, and the residual activity after 30 days of storage at 30 DEG C is greater than or equal to 90%. The invention also discloses a nucleic acid encoding the variant, a vector, a recombinant host, an enzyme preparation, and a method for depolymerizing PET and a copolymer thereof in a process temperature range of 70-90 DEG C. Compared with a control Bhr6M, the variant maintains more lasting activity in high-temperature and long-period operation, is suitable for PET substrates with different forms and crystallinity, reduces the enzyme supplementing frequency and improves the stability of a device.

This invention belongs to the field of optical film technology, specifically high-definition optical composite coating films and their preparation methods. This invention aims to solve the problem that existing optical composite films cannot simultaneously achieve both optical enhancement and viewing angle. This invention involves mixing a nano-conductive polymer, a silicone additive, and a diffusion liquid to obtain a diffusion layer coating liquid; dispersing PMMA-PS microspheres in the diffusion layer coating liquid to obtain a composite coating liquid; mixing a prism layer resin and nano-silica to obtain a prism layer coating liquid; coating the back of a PET substrate with the composite coating liquid and passing it through a microlens array to obtain a diffusion layer; coating the front of the substrate with the prism layer coating liquid to obtain a prism layer; and finally, after curing, attaching a PE protective film to one side of the prism layer to obtain the composite coating film product. The composite coating film prepared by this invention has excellent optical enhancement, a good viewing angle, and effectively suppresses moiré patterns.

The invention belongs to the technical field of variable optical films, discloses a multifunctional composite variable optical film and a preparation method thereof, and aims at solving the problems that an existing variable optical film is single in function, unstable in optical performance, poor in flexibility and bending resistance and low in process precision. The preparation method comprises the following steps: pre-treating the base material: sequentially carrying out plasma cleaning on the PET base material and sputtering the ITO conductive layer, sequentially carrying out ultrasonic cleaning on the glass substrate and preparing the YAG powder enhancement layer; the coating of the functional layer is that the surface of the ITO layer of the PET-ITO composite base material is coated with a PDLC layer and an electrochromic layer, and the surface of the YAG layer of the YAG-glass composite base material is coated with a temperature-sensitive layer; the compounding and curing are as follows: firstly laminating after aligning and compounding, and then carrying out UV segmented curing. The light transmittance of the product can be adjusted by 5-95% in an electric field, and the infrared reflectivity is gt; and after the ITO layer is bent for 1000 times and the bending radius is 5mm, the resistance change rate is less than or equal to 10%, so that the ITO film is suitable for a sunshade film for a vehicle and an intelligent window of a building.

This invention discloses a fully automated screen printing method for labels based on CCD visual alignment, specifically including the following steps: material feeding control, substrate pretreatment, CCD visual alignment, dual CCD compensation printing, continuous alignment and overprinting, low-temperature curing, cooling, shaping and leveling, CCD visual final inspection, slitting and rewinding, and packaging output. This fully automated screen printing method for labels based on CCD visual alignment achieves precise alignment and real-time offset compensation between the screen and the substrate through dual CCD visual monitoring, improving overprinting accuracy. It employs ambient pressure low-temperature plasma pretreatment to enhance substrate adhesion, and three-stage low-temperature curing to prevent PET substrate deformation. Combined with full-width CCD final inspection to automatically remove defective products, this method achieves fully automated, high-precision, and high-stability label printing production, offering advantages such as precise alignment, uniform curing, strict quality control, and high production efficiency.

This invention relates to the field of thin film preparation, and discloses a method and system for preparing dimming films based on PET and liquid crystal. The method includes: first, acquiring the transmittance parameters of the PET substrate and the phase transition temperature data of the liquid crystal material; constructing an interlayer framework; forming an activated interface layer on the surface of the PET-liquid crystal composite through plasma treatment; coating a liquid crystal dispersion to obtain a pre-cured film; gradient curing based on its thickness distribution data using an ultraviolet light source to form a dimming functional layer; collecting the transmission spectrum curves of the dimming functional layer under different electric field intensities; calculating the duty cycle value of the liquid crystal molecules; configuring a transparent conductive electrode pattern accordingly; and topologically designing it as a uniquely controlled electrode array. Defect clusters are identified and repaired by calculating the electronic control adjustment value; the dimming attenuation parameters of the repaired film are analyzed; and finally, a PET-liquid crystal composite thin film preparation scheme is formulated. This invention can improve the preparation efficiency of dimming films.

The invention belongs to the technical field of electrochromic materials and polymer composite films, and particularly relates to PET (Polyethylene Terephthalate) for an electrochromic dimming film and a preparation method of the PET. The problem that stripping easily occurs in recycling due to insufficient adhesive force between a PET base material and a conductive layer is solved. The preparation method comprises the following steps: performing chemical activation and nanoscale physical roughening on a PET base material through ultraviolet-ozone synergistic treatment, and then coating a triblock copolymer interface layer; after the interface layer is annealed in a toluene steam atmosphere, a gradient interface layer with a vertical phase separation structure can be formed, and PGMA blocks are enriched on the surface; and a firm covalent bond connection and interpenetrating network structure is formed at an interface by reacting with a material coated with an amino-containing functional group and carrying out thermocuring.

The application provides a high-flexibility electrolyte-resistant termination adhesive tape and a preparation method thereof. The termination adhesive tape comprises, from bottom to top, a non-silicon release agent coating layer, a PET substrate layer and an acrylic pressure-sensitive adhesive. The preparation raw material of the acrylic pressure-sensitive adhesive comprises the following components in parts by weight: modified polyacrylic acid resin 50-100 parts, curing agent 1-10 parts, functional additive 1-10 parts, pigment 1-5 parts and solvent 50-100 parts. The termination adhesive tape prepared by the application has the advantages of high viscosity, good flexibility, electrolyte corrosion resistance, high temperature resistance and the like, and can be better insulated and fixed at the termination position of a battery cell, thereby preventing contact short circuit, improving the service life and safety of the battery.

The invention discloses a preparation method of an RFID (Radio Frequency Identification Device) antenna, which comprises the following steps of: coating a low-viscosity water-based adhesive on a release surface of release paper to form an adhesive layer, and compounding an aluminum foil on the adhesive layer to obtain a composite foil material; according to the design pattern of the RFID antenna, the aluminum foil layer on the composite foil is subjected to precise die cutting, and a needed antenna pattern and a waste area are formed; the aluminum foil in the waste area is removed, and the antenna pattern is left to be attached to the release paper; the surface of the PET base material is coated with a high-viscosity permanent adhesive, and the release paper bearing the antenna pattern is attached to the PET base material in an aligned mode, so that the antenna pattern is firmly combined with the permanent adhesive; and finally, the antenna pattern is transferred to the PET base material by stripping the release paper. And slitting the PET base material on which the antenna pattern is transferred to obtain the RFID antenna. Precise die cutting is achieved by temporarily fixing the aluminum foil through the low-viscosity adhesive layer, then pattern transfer is completed through the high-viscosity adhesive layer, and the problem of transfer defects caused by adhesive layer viscosity contradiction in a traditional process is solved.

The utility model discloses a PET base material potentiometer circuit which comprises an upper circuit and a lower circuit, interlayer glue is arranged between the upper circuit and the lower circuit, back glue is arranged below the lower circuit, the upper circuit is composed of an upper circuit base material, a first silver paste layer and an upper circuit insulating oil layer, and the lower circuit is composed of a lower circuit base material, a second silver paste layer and a lower circuit insulating oil layer. The upper circuit substrate, the first silver paste layer and the upper circuit insulating oil layer are sequentially arranged from top to bottom. According to the utility model, silver paste, carbon paste, insulating oil and the like are printed on the upper PET and the lower PET to form an upper circuit and a lower circuit, and then the upper circuit and the lower circuit are adhered through the double faced adhesive tape to form a resistor loop, so that the function of the potentiometer is realized; a plurality of potentiometers can be unified in the same circuit, the thickness of the product is not more than 1mm, the cost is low, the potentiometer can be freely designed and combined, even a special-shaped potentiometer can be designed, and the degree of freedom of design is improved.

The present disclosure relates to a technical field of new energy power battery pack and energy storage, and provides an acquisition and integration assembly of a battery module with flame-retardant property and a preparation method. The acquisition and integration assembly includes a PET substrate film coated with a flame-retardant adhesive layer and an acquisition circuit assembly hot-press encapsulated on one side of the flame-retardant adhesive layer of the PET substrate film; the flame-retardant adhesive layer includes following components in parts by weight: 20 to 80 parts of a thermally curable resin, 5 to 20 parts of a curing agent, and 20 to 80 parts of a flame retardant. The acquisition circuit assembly is connected with each conductive connection busbar by FPC, FFC, FDC, or FCC, and is formed by integral hot-press encapsulating and curing after being adhered and fixed with a PET base film coated with a flame-retardant adhesive layer.

The invention discloses a graphene heating film and a graphene heating sheet based on the graphene heating film, the heating film sequentially comprises a base material PET film, a transfer layer, a packaging layer, a heating layer, an insulating layer, an aluminum plating layer and an adhesive layer from bottom to top, and the graphene heating sheet can be obtained by compounding the graphene heating film and a substrate through a hot-pressing compounding-stripping transfer process. The graphene-carbon nanotube-conductive carbon black composite conductive network and semi-cured adhesive layer system is designed, so that the compactness, the protection property and the flexibility of the heating film are improved, the heating uniformity and the heat efficiency are enhanced, the energy consumption and the cost are reduced, the reutilization of the PET base material and the green recovery of the material are realized, and the graphene-carbon nanotube-conductive carbon black composite heating film is suitable for various substrate materials and has a wide application prospect. And the large-scale mass production requirement is met.

This invention belongs to the field of polymer material modification technology and provides a graphene composite aerogel modified PET material and its synthesis process. The synthesis process includes: (1) preparation of graphene composite aerogel: adding double-terminated epoxy-modified polyethylene glycol and nano-hydroxyapatite to a dispersion of graphene oxide, stirring and mixing, then adding triethanolamine, continuing to stir to obtain a premixed system, then adding ascorbic acid and polyethylene glycol 400, followed by hydrothermal reaction, aging and freezing drying; (2) preparation of modified PET material: after activating the PET material to obtain a PET substrate, a graphene composite aerogel slurry is prepared, the slurry is coated on the surface of the PET substrate, then hot air setting, low temperature hot pressing and bonding, and winding and cutting are performed to obtain the final product. This synthesis process can achieve uniform dispersion of aerogel in the PET matrix and tight interfacial bonding, simultaneously improving the mechanical strength, thermal stability and thermal insulation performance of the PET material, and can meet the needs of industrial production.

The invention relates to the technical field of anti-dazzle films, in particular to a flexible anti-dazzle film with a super-hydrophobic surface and a preparation method and application of the flexible anti-dazzle film. Comprising a PET substrate, PU nano-fibers forming a network are embedded in the PET substrate, a fluorinated titanium dioxide nano-particle coating is arranged on the surface of the PET substrate, the light transmittance of the prepared flexible anti-glare composite film can reach 92.1%, the haze can reach 93.3% and is far better than that of a commercial anti-glare film in the prior art, and meanwhile the flexible anti-glare composite film has the advantages that the super-hydrophobicity is achieved, the water contact angle is 165 degrees, the sliding angle is 1.2 degrees, and the anti-glare effect is good. The self-cleaning and anti-fog functions are realized.

The invention provides an acrylic acid protective film for a polaroid, the acrylic acid protective film comprises a PET release film, an acrylic acid adhesive layer and a PET base material, the thickness of the PET release film is 50-75 [mu] m, the thickness of the PET base material is 50-75 [mu] m, and the preparation raw material of the acrylic acid adhesive layer comprises the following components by weight: 60-100 parts of an acrylic acid polymer curable precursor; 40-80 parts of an organic solvent; 2-8 parts of a curing agent; 1-3.5 parts of an antistatic agent; 0.05 to 2 parts of a composite anti-aging agent; and 0.05 to 1 part of a surfactant. The low-precipitation effect under the high-temperature and high-humidity conditions is achieved through the electrostatic spinning membrane adsorbed in a gradient mode.

The invention discloses a special high-heat-resistance PET composite decorative film for household appliances and a preparation process of the special high-heat-resistance PET composite decorative film. The special high-heat-resistance PET composite decorative film sequentially comprises a wear-resistant and stain-resistant surface layer, a high-heat-resistance decorative printing layer, a high-temperature-resistant bonding layer, an enhanced PET base material layer, a heat-resistant buffer layer, a high-viscosity and high-temperature-resistant gum layer and a release film layer from top to bottom, the high-temperature-resistant material is adopted, the reinforced PET base material is subjected to blending modification through PET and PBT, and the glass fiber reinforcing agent and the like are added, so that the heat-resistant stability is improved; the high-heat-resistant decorative printing layer is made of polyurethane resin and heat-resistant pigment, so that high-temperature fading is prevented; the high-temperature-resistant bonding layer and the like adopt high-temperature-resistant resin and a cross-linking system, so that the composite film can stably bear the high temperature of 150 DEG C or above.

The invention discloses a high-temperature glue-blocking film and a manufacturing method thereof, and belongs to the technical field of layered products for printed circuit boards. The glue-blocking film sequentially comprises a modified release coating, a bio-based composite PET base material layer, a novel high-temperature-resistant glue-blocking layer, a bio-based composite PET base material layer and a modified release coating from top to bottom. The bio-based composite PET base material layer is formed by quaternary compounding of bio-based PET resin, PET resin, nano silicon nitride and nano zirconium dioxide, and is matched with a specific PET compatibilizer; the novel high-temperature-resistant glue-blocking layer takes an organic silicon copolymer as a substrate, and organic modified nano-montmorillonite and a flame-retardant and yellowing-resistant composite additive are added into the novel high-temperature-resistant glue-blocking layer; and the modified release coating is a fluorine-containing modified organic silicone oil and polytetrafluoroethylene micro powder composite system. The invention solves the problems of poor high-temperature resistance, single function of the adhesive-resistant layer and unstable high-temperature release layer of the existing adhesive-resistant film base material, improves the high-temperature resistance, flame retardance, yellowing resistance and release stability of the product, and is suitable for the high-temperature pressing process for embedding the metal copper block in the printed circuit board.

This utility model discloses a high-sensitivity, ultra-long-range RFID chip, comprising a PET substrate, an antenna, and a chip. The antenna, made of aluminum foil, is etched onto the PET substrate. The antenna includes a rectangular body with a hollowed-out radiating area in the middle. Below the radiating area is a feed port that isolates the antenna. A conductive adhesive layer is coated at the feed port. The chip, conductive adhesive layer, and feed port are fixedly connected by hot pressing. Symmetrical rectangular signal enhancement areas are located at both ends of the body. The signal enhancement areas are integrally formed with the body and located below the body. A long strip-shaped binding and positioning detection groove is located at the bottom of the body corresponding to the feed port. By adopting this solution, the original thick-wire bent antenna is adjusted to a planar antenna, which enhances the signal. At the same time, with the help of signal enhancement from the radiating area and the signal enhancement area, the sensitivity and reading distance of the RFID chip are improved, with a maximum reading distance of 8 to 10 meters.

The invention provides a release film with a directional exhaust function, the release film comprises a PET base film and a release agent, the surface of the PET base film is provided with a micro-nano groove and bulge composite structure, and the micro-nano groove and bulge composite structure is formed by degrading PVA after PLA microspheres and PVA fibers are blended and compounded with PET. According to the invention, a micro groove-nano bulge composite exhaust structure is constructed on the surface of the PET base material in situ, an additional composite grain layer is not needed, the maturity of a traditional coating process is reserved, and the problem that an exhaust channel is easy to block in a traditional scheme is solved by combining the efficient exhaust advantage of an in-situ micro-nano structure.

The invention discloses a high-compactness functional current collector and a preparation method and application thereof, and relates to the technical field of current collectors. The high-compactness functional current collector is prepared by magnetron sputtering copper plating on the surface of the PET base film in cooperation with a pulse electroplating process; according to the conductive seed layer obtained through magnetron sputtering and the thickened copper layer obtained through pulse electroplating, the compactness of the functional copper foil is optimized by controlling the single orientation of crystal grains in the growth process on the surface of the base material, the conductivity is improved, and the product performance is optimized; under the condition that the performance of the high-compactness functional current collector is not influenced, the surface active agent is added into the electroplating solution to reduce the surface tension of the electroplating solution, so that the surface of a cathode is more easily wetted by the solution, and the interface defects of a plating layer are reduced; by adding the composite additive into the electroplating solution, the compactness, copper plating rate and uniformity of a copper layer are improved.

A method for manufacturing a safety belt lock (100) and a light-emitting assembly (20). The safety belt lock (100) comprises: a housing (10), having an opening end (122) for insertion of a lock tongue; and a light-emitting assembly (20), comprising: a PET substrate (21), arranged circumferentially at the opening end (122) of the housing (10); a conductive circuit (22), disposed on a first side (211) of the PET substrate (21); and a plurality of LED chips (23), fixed to the PET substrate (21) and electrically connected to the conductive circuit (22). The PET substrate (21) is flexible and can be designed and made into various shapes and sizes, so as to adapt to sizes and shapes of opening ends (122) of different housings (10). The flexible PET substrate (21) can also be more easily mounted on the housing (10), thereby simplifying the assembling difficulty. The plurality of LED chips (23) are closely arranged, so that consistency of light output can be ensured, thereby facilitating uniform output and uniform illumination of light of the safety belt lock (100). The LED chip (23) is directly integrated on the PET substrate (21), simplifying the assembly process and reducing the size of the wiring harness compared to the existing technology, and therefore the volume and space occupancy can be reduced.

The present application relates to the technical field of functional film, in particular to a low-radiation energy-saving base film for building and a preparation method thereof.The present application overcomes the problem that the mechanical property and optical property of the energy-saving base film in the prior art cannot be considered simultaneously.The present application is prepared from a PET substrate with a skin-core structure, a functional coating and a seven-layer magnetron sputtering film;the skin layer of the PET substrate is PET modified by melt grafting with UVA and HALS additives;the functional coating comprises a water-based PUA emulsion, nano-silicon dioxide and KH550;the seven-layer magnetron sputtering film comprises, from bottom to top, a TiON bottom layer, a Nb2O5 lower layer, an Ag-Pd-Ti lower layer, an AZO layer, an Ag-Pd-Ti upper layer, a Nb2O5 upper layer and a TiON top layer.Through the synergistic effect of grafting modification, functional coating and multi-layer sputtering, the present application maintains the mechanical property while realizing the balance of visible light transmittance and infrared thermal radiation reflectance, and can be applied to the energy-saving field such as building glass.

The invention discloses a vehicle-mounted peep-proof brightness enhancement film and a preparation method thereof. The vehicle-mounted peep-proof brightness enhancement film comprises a peep-proof functional layer and an optical functional composite layer, the peep-proof functional layer comprises a light emitting layer and a micro shutter structure layer which are arranged in sequence; the optical function composite layer comprises a core polarization layer and PET base material layers which are arranged in sequence, and a prism brightening structure layer is arranged between the PET base material layers. The light emitting layer serves as the outermost layer and can provide surface protection and optical adjustment functions, and durability and display definition of the vehicle-mounted display in a severe environment are ensured; the micro-shutter structure layer effectively prevents side screen peeping, driving privacy safety is guaranteed, and meanwhile the view angle in the vertical direction meets the reasonable viewing requirement.

The utility model discloses a kind of composite optical film for high-brightness small-size backlight module, it is characterized in that, from front to back, it includes: diffusion layer, first adhesive layer, first prism layer, second adhesive layer, second prism layer and back coating layer;The second prism layer is arranged on the front of optical grade PET substrate, and the back coating layer is arranged on the back of the optical grade PET substrate.The utility model integrates the function of traditional three film pieces (lower diffusion film+lower brightness enhancement film+upper brightness enhancement film) on a composite film piece, significantly reduces the overall thickness of backlight module, and simplifies assembly process.

The utility model discloses a PU (Polyurethane) protective film, which comprises a PET (Polyethylene Terephthalate) base material layer (1) and a PU adhesive layer (2), the surface of the PU adhesive layer (2) is coated with an adhesion enhancement layer (3), the surface of the adhesion enhancement layer (3) is coated with a surface hydrophobic layer (4), and the thickness of the adhesion enhancement layer (3) is 1-3 microns; and the thickness of the surface hydrophobic layer (4) is 0.5-1 [mu] m. According to the PU protective film disclosed by the utility model, through a composite structure of the adhesion enhancement layer, the surface hydrophobic layer and the chemical modification layer, the adhesion of dust and oil stain is effectively prevented, the cleanliness is improved, meanwhile, the excellent adhesion force of the PU adhesive layer is kept, and compared with the prior art, the PU protective film shows stronger antifouling property and operability.

The application discloses a PET copper film with high bonding force and high appearance quality for a large-size touch screen, a PET substrate, a transition layer, a composite copper seed layer and an electroplated copper circuit layer, and the bonding force between the copper seed layer and the PET substrate is improved by the transition layer to enhance adhesion; the blackening passivation treatment layer can reduce reflectivity, prevent oxidation discoloration, and reduce moire, thereby improving visual consistency and long-term stability. The preparation method of the application improves the surface energy of the PET substrate by online plasma activation and the design of the chromium or chromium nitride transition layer, forms strong chemical bonds between the transition layer and the PET substrate, and provides an excellent adhesion substrate for the copper seed layer; the composite seed layer process eliminates the pinhole defects of traditional sputtering, and ensures the integrity of the circuit; the blackening treatment greatly improves the visual performance. The process of the application has high stability, can effectively reduce the yield loss caused by insufficient bonding force and appearance defects, and has high industrial application value.

The invention belongs to the field of composite materials, and particularly relates to a flexible multilayer structure composite transparent conductive film based on a substrate with high surface roughness, which comprises a PET (polyethylene terephthalate) substrate with high surface roughness and without preparing a smooth bottom layer, and a ZnS film layer, a Cu film layer, an Ag film layer and a TiO2 film layer which are sequentially prepared from the bottom layer to the top layer through magnetron sputtering deposition, the average roughness Ra of the surface to be deposited of the PET substrate is 6.6-7.0 nm; the thickness of the ZnS film layer ranges from 35 nm to 50 nm. The thickness of the Cu film layer ranges from 0.2 nm to 0.8 nm. The thickness of the Ag film layer is 7 to 12 nm; the thickness of the TiO2 film layer is 30 to 45 nm; the invention also provides a preparation method of the multilayer structure composite transparent conductive film. The multi-layer composite transparent conductive thin film has high light transmittance and high conductivity, and is uniform in microscopic structure.

The invention relates to the field of conducting films, in particular to a high-performance flexible conducting film based on silver nanowires and a preparation method thereof.The method comprises the steps that a dispersing agent and an inhibitor are added into a silver source solution, a reaction is conducted for 2-3 hours at the temperature of 80-95 DEG C and the humidity of 40%-50%, the silver nanowires with the length-diameter ratio larger than or equal to 1000 are prepared, and centrifugal purification is conducted; putting the purified silver nanowires into the titanium dioxide sol, ultrasonically stirring under the protection of inert gas, and dispersing to form stable dispersion liquid; mixing the dispersion liquid with protective glue, adding an inorganic diluent to adjust the viscosity to 50-80 mPa.s, and filtering to remove impurities; a flexible PET substrate is pretreated, then the PET substrate is coated with the mixed glue solution, and the tension of the substrate is maintained to be 5-10 N in the coating process; performing gradient drying to form a conductive layer; and performing laser etching on the conductive layer, and laminating an electrode to obtain the conductive film. Silver migration and silver corrosion are fundamentally eliminated through a silver nanowire coating liquid inorganic system, and a complete technical process is realized by matching with a matched unique coating and drying system.

The utility model discloses a post-drying device for a PET substrate printed circuit. The post-drying device comprises an electric conveyor belt and a lifting mechanism, a drying box is fixedly connected to the middle of the upper end of the electric conveying belt, and infrared heating pipes which are evenly distributed are fixedly connected to the interior of the drying box; the lifting mechanism comprises lifting cabinets, sliding tables, lifting tables and guide rails, the lifting cabinets are placed on the left side and the right side of the electric conveying belt, the guide rails which are symmetrically distributed left and right are fixedly connected to the inner walls of the front side and the rear side of each lifting cabinet, the sliding tables are slidably connected to the exteriors of the guide rails, and the lifting tables are fixedly connected between the upper ends of the sliding tables located on the same lifting cabinet; positioning frames symmetrically distributed front and back are arranged on the upper surfaces of the lifting tables correspondingly, and transfer boxes are placed on the upper surfaces of the lifting tables correspondingly. According to the drying equipment for the PET substrate printed circuit, through automatic feeding and discharging, the workload is reduced, meanwhile, through an infrared drying mode, energy is saved, and thermal deformation of the substrate is avoided.

This invention discloses a two-dimensional perovskite thin film based on the control of scintillator particle size and distribution, its in-situ growth method, and its application, relating to the field of X-ray imaging technology. The method includes preparing BA2PbBr4 precursor powder by a cooling method, then dissolving it in dimethylformamide solvent to obtain a precursor solution; subsequently, uniformly dispersing PMMA powder in the precursor solution to obtain a mixed solution; placing the mixed solution on a PET substrate, and placing the PET substrate on a heating stage to obtain a scintillator thin film. This invention enhances the luminescence intensity of the BA2PbBr4@PMMA scintillator thin film under X-ray irradiation by controlling the size and distribution of BA2PbBr4 particles, thereby improving its spatial resolution in X-ray imaging. Combined with the rapid decay time characteristic of BA2PbBr4, high spatial and temporal resolution can be achieved simultaneously.