602 results about "UV curing" patented technology

The invention discloses a high-heat-conductivity leakproof liquid metal phase change heat-conducting gasket and a preparation method thereof, and relates to the technical field of heat-conducting gaskets. The preparation method comprises the following steps: alloying high-heat-conductivity low-melting-point liquid metal gallium with high-heat-conductivity metal silver and copper, mixing with a polymer containing a specific functional group, adding a modified heat-conducting filler, and carrying out UV curing to form the heat-conducting gasket. Liquid metal is easily alloyed to form eutectic alloy, the melting point can be increased, a chemical cross-linked network formed by the modified heat conduction filler and UV curing can make up heat conduction loss, a heat conduction path is established, the interface thermal resistance is reduced, and the heat conduction efficiency is remarkably improved. The surface oxide layer interacts with the polar group of the polymer, and the steric hindrance effect of the cross-linked network is combined to synergistically realize the leak-proof effect. The high-heat-conductivity leakproof liquid metal phase change heat-conducting gasket prepared by the invention has the effects of high heat conductivity and leakproof.

The invention discloses a UV curing adhesive for coating a low-refractive-index optical fiber and a processing method thereof, belongs to the technical field of adhesive preparation, and is used for solving the technical problem that the refractive index and the damp-heat resistance of the UV curing adhesive for coating the optical fiber in the prior art need to be further improved. The preparation method comprises the following steps: introducing a low-refractive-index hybrid siloxane prepolymer, a multi-component interface bonding prepolymer and a modified branched polyester prepolymer into a system together, and constructing a compact and uniform organic-inorganic three-dimensional network in a curing process by utilizing silica condensation, interface chemical bonding and a flexible chain segment cross-linking reaction, the low-refractive-index hybrid siloxane prepolymer endows a film layer with a stable refractive index, the multi-component interface bonding prepolymer enhances the binding force of a base material, the modified branched polyester prepolymer improves stress buffering and toughness, and the obtained cured film is low in refractive index, firm in interface bonding and small in mass change in a humid and hot environment and shows excellent optical stability and long-term reliability.

The invention relates to the technical field of shoes, and discloses a foot bed and leather integrally-formed structure and a preparation method thereof, and the foot bed and leather integrally-formed structure comprises a leather surface layer, a supporting core layer and a bottom layer; a preset circumferential and middle array type printing area on the lower surface of the leather surface layer is subjected to plasma treatment, sprayed with resin and subjected to UV curing to form an anchoring layer, the supporting core layer is connected to the anchoring layer on the lower surface of the leather surface layer through a bottom layer to be integrally formed in a composite mode, and the supporting core layer is of a latticed bionic lattice structure. The flexible supporting core layer of the latticed bionic lattice structure is processed through the technologies such as 3D printing, the flexible supporting core layer and the leather are integrally formed, the shoe pad detachably matched with a shoe for use is manufactured, the shoe pad has the ventilation and drainage functions through the supporting core layer in the shoe pad, the shoe pad can be conveniently matched with ventilation holes in a shoe body for use, and the moisture problem is solved; in the process of matching with ventilation of the supporting core layer, the flexible buffering pad supports the foot sole surface, the comfort degree is high, cleaning and maintenance are convenient, and the insole can flexibly adapt to different shoes and is high in applicability.

The invention provides LED-UV (Light Emitting Diode-Ultraviolet) curing ink as well as a preparation method and application thereof, and the LED-UV curing ink is prepared from the following components in parts by weight: 30 to 50 parts of modified polyurethane acrylate resin, 15 to 30 parts of modified epoxy acrylate resin, 10 to 15 parts of amino resin, 15 to 30 parts of acrylate monomer, 6 to 10 parts of photoinitiator, 1 to 3 parts of adhesion promoter, 2 to 4 parts of coupling agent, 0.5 to 1 part of defoaming agent and 1 to 2 parts of flatting agent. The modified polyurethane acrylate resin is hydroxyl and / or carboxyl modified polyurethane acrylate resin; the modified epoxy acrylate resin is polyurethane modified epoxy acrylate resin. After the ink is photo-cured, a paint film has good flexibility, adhesive force and chemical resistance; the hardness, the curing speed and the chemical resistance of a paint film can be improved; the adhesive force to a base material can be promoted; and the water resistance and the wine soaking resistance of a paint film are enhanced.

The invention discloses a UV-cured high-weather-resistance optical thin film and a preparation method thereof, and relates to the technical field of optical thin films. The optical film is prepared by taking polyethylene glycol terephthalate as a base material and coating the base material with a UV curing coating, and the UV curing coating comprises the following raw materials in parts by weight: 15-20 parts of aliphatic polyurethane acrylate, 5-8 parts of perfluorobutyl ethyl acrylate, 8-12 parts of hydroxyethyl acrylate, 6-10 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, 1-3 parts of 1, 2, 4-trimethyl-1, the invention relates to a UV (ultraviolet)-resistant coating which is prepared from the following raw materials in parts by weight: 1-2 parts of 2, 6-hexanediol diacrylate, 5-8 parts of trimethylolpropane triacrylate, 30-40 parts of modified epoxy acrylate, 1-2 parts of a silane coupling agent KH-570, 2-3 parts of a photoinitiator 1173, 0.5-1.2 parts of a modified ultraviolet absorbent UV-327, 0.8-1.5 parts of a hindered amine light stabilizer 540, 0.3-0.8 part of an antioxidant 1010, 0.09-0.12 part of an ultraviolet absorbent Tinuvin400 and 0.2-0.5 part of polyether modified polydimethylsiloxane. According to the UV-cured high-weather-resistance optical thin film, polyethylene glycol terephthalate is used as a base material, key raw materials such as a UV-cured coating with a scientific formula, modified epoxy acrylate and the like are finely prepared, a two-stage curing process is adopted, and the weather resistance is excellent.

The invention discloses an intelligent cooperative control system and method for the UV curing process of a rotary press, and relates to the technical field of industrial process control, the system comprises a data acquisition module, a central cooperative control module, a UV light source control module, a temperature regulation module, a speed synchronization module and a man-machine interaction module, the central cooperative control module receives curing temperature data, printing speed data and UV illumination intensity data acquired by the data acquisition module, generates a control instruction through a preset cooperative control algorithm, and sends the control instruction to the UV light source control module, the temperature adjustment module and the speed synchronization module, so that multi-parameter cooperative control of the UV curing process is realized, and the UV curing process is controlled. Through an intelligent cooperative control algorithm, real-time dynamic adjustment of the UV light source power, the curing temperature and the printing speed is achieved, the consistency and stability of the UV curing quality are improved, energy consumption is reduced, and the production efficiency of the rotary press is improved.

The invention relates to the technical field of ink preparation, in particular to a quantum dot-containing LED-UV anti-forgery ink formula and an in-situ modification preparation process thereof, and the quantum dot-containing LED-UV anti-forgery ink formula comprises the following components in parts by mass: 2-8 parts of core-shell structure quantum dots, 20-40 parts of LED-UV curing resin, 15-30 parts of a reactive diluent, 3-8 parts of a photoinitiator, 1-5 parts of a composite anti-forgery functional aid and 5-15 parts of a high-purity solvent. The quantum dots are uniformly dispersed in an ink system after being subjected to in-situ modification treatment, in-situ modification is realized through chemical bonding of a surface modifier and hydroxyl and amino groups on the surfaces of the quantum dots, and LED-UV cured resin, an active diluent and a photoinitiator cooperate with an LED-UV light source of 365-405 nm to perform in-situ surface modification on the quantum dots, so that the quantum dots are uniformly dispersed in the ink system. The fluorescent powder is tightly combined with a resin system through chemical bonding, so that agglomeration and migration are fundamentally prevented, and the uniformity and stability of the fluorescent property are ensured.

A UV-tackifiable adhesive tape and a preparation method therefor. The UV-tackifiable adhesive tape comprises a substrate layer, a UV-tackifiable adhesive layer and a release film layer, wherein the substrate layer, the UV-tackifiable adhesive layer and the release film layer are sequentially laminated from bottom to top; and the UV-tackifiable adhesive layer comprises a modified polyester resin, a monofunctional UV photocuring monomer, a polyfunctional photocuring compound, a curing agent, a photoinitiator and a stabilizer. The UV-tackifiable adhesive layer comprises the modified polyester resin as a basic polymer, and the polyester resin can effectively improve the adhesion between the adhesive layer and a substrate before UV curing of the UV-tackifiable adhesive layer, improve the bonding strength between the UV-tackifiable adhesive layer having been UV-cured and an adhered object, and also enhance the high-temperature release force and weather resistance of the UV-tackifiable adhesive layer having been UV-cured.

The invention discloses a protective base film for a polaroid and a preparation method of the protective base film, and belongs to the technical field of optical display equipment protective films. The protective base film comprises an antistatic PET base material layer and a self-adhesive layer, the antistatic PET base material layer is prepared by blending optical-grade PET slices and antistatic master batches, the master batches are prepared by taking ionic liquid dihydric alcohol as a comonomer, and the base film is endowed with lasting and stable intrinsic antistatic performance; the self-adhesive layer is formed by melting and blending a polyurethane acrylate prepolymer, a modified montmorillonite filler, other matrix materials and auxiliaries according to a specific ratio and carrying out an online UV curing process. Through innovative material design and an integrated forming process, the prepared protective base film has excellent optical transparency, lasting antistatic property, appropriate bonding strength, clean stripping property and outstanding damp-heat aging resistance, the comprehensive performance is remarkably superior to that of a traditional gluing protective film, and the production process is more environment-friendly and efficient.

The invention discloses water-based UV (ultraviolet) curing ink-jet ink and a preparation method thereof, and relates to the field of UV curing ink, and the water-based UV curing ink-jet ink comprises the following components: 25-35% of water-based light-cured resin emulsion; 5%-12% of a rosin-based tackifying monomer; 4%-7% of a photoinitiator; 1%-2% of an amine synergistic agent; 3%-8% of a coloring agent; 8%-12% of an organic cosolvent; 0.2%-0.8% of a surfactant; 0.1%-0.3% of a defoaming agent; and the balance of deionized water. The adhesive force of the ink on a non-absorbent substrate is remarkably improved by introducing the rosin-based tackifying monomer, meanwhile, the compatibility and curing efficiency of the ink are effectively improved by optimizing the ratio of the water-based light-cured resin emulsion to the tackifying monomer and compounding the photoinitiator, and the problem of falling off or abrasion of a cured film is avoided.

The invention provides bio-based hyperbranched unsaturated polyester, a UV curing coating and application of the bio-based hyperbranched unsaturated polyester and the UV curing coating. The bio-based hyperbranched unsaturated polyester is obtained through polycondensation of preparation raw materials including bio-based hydroxyl-terminated hyperbranched polyester, unsaturated binary acid and / or anhydride thereof and maleic acid modified polyolefin. The preparation raw materials of the UV curing coating comprise the following components in parts by weight: 20-60 parts of bio-based hyperbranched unsaturated polyester, 20-80 parts of an active diluent monomer and 2-7 parts of a photoinitiator. The hyperbranched unsaturated polyester disclosed by the invention is high in reaction activity, low in viscosity and low in shrinkage rate; the UV coating prepared from the resin is low in viscosity and can be coated in a roller coating mode, a cured coating is compact, MEK wiping resistance reaches more than 1000 times, glossiness attenuation is lower than 10% after UVB illumination is adopted for 1600 h, haze is lower than 1%, hardness and abrasion resistance are excellent, adhesive force to multiple base materials is good, and the UV coating is very suitable for being applied to optical films.

The polyester film according to the embodiment prepared while the crystallinity of a copolymerized polyester film is controlled can be improved in thermal properties and chemical properties. Specifically, the polyester film has not only an excellent shrinkage rate with respect to temperature, but also excellent adhesive strength by a solvent even when applied to gravure printing, UV curing printing, and VSOP printing, making it suitable for a heat shrinkage process and a seaming process. In addition, the polyester film can be applied to a recycling process since it has an appropriate change in crystals during washing with an aqueous solution of NaOH, and the generation of fusion is suppressed even upon prolonged high-temperature drying.

The application discloses a UV energy detection mechanism and a UV curing device, and belongs to the technical field of spraying and curing equipment. The UV energy detection mechanism comprises a supporting structure, a conveying structure, a driving structure and a detection structure. The conveying structure is installed on the supporting structure, and the conveying structure has a moving part capable of moving in a first direction. The driving structure is in transmission connection with the moving part to drive the moving part to move in the first direction. The detection structure is arranged on the moving part and can move under the driving of the moving part. The detection structure is used for detecting UV energy at different positions. The detection structure, the conveying structure and the supporting structure are arranged in sequence in a second direction. The application alleviates the linear irradiation problem of the UV lamp tube through reasonable structure arrangement, and prolongs the service life of the UV energy detection mechanism.

The invention provides a particle surface printing process and a printed matter, and the printing process comprises the following steps: selecting basic color ink, and adding an acrylate modified polysiloxane-polyethylene wax composite additive into the basic color ink to obtain modified color ink; the modified color ink is applied to the surface of the printed matter through first printing equipment; uV gloss oil is applied to the surface of the modified color ink which is not dried after printing through second printing equipment; and enabling the assistant color ink layer and the UV gloss oil to be subjected to surface energy difference driven directional aggregation reaction by utilizing a UV curing lamp, so as to form a particle surface layer with a micron-sized granular structure. Compared with an existing reverse glazing process, the reverse glazing process has the advantages that the process steps are obviously reduced, the matte visual effect and the gravel touch effect are obtained simultaneously in one-time online offset printing, the consumption of special UV gloss oil can be reduced by about 20-30%, and the overall production efficiency is improved by about 15-25%.

The invention relates to the technical field of coatings, and discloses an acid and alkali resistant UV curing coating and a preparation method thereof. The prepared UV curing coating is prepared from the following raw materials in parts by weight: 40 to 60 parts of acrylic resin, 3 to 8 parts of pentaerythritol tetraacrylate, 3 to 7 parts of silicon dioxide, 3 to 5 parts of a photoinitiator, 6 to 12 parts of a composite reinforcing agent, 0.2 to 0.6 part of a flatting agent, 1 to 2 parts of a dispersing agent, 0.5 to 1.5 parts of a de-foaming agent and 15 to 25 parts of water. A coating film obtained after the coating is subjected to ultraviolet curing has excellent acid and alkali resistance, salt spray resistance and adhesive force and can be widely applied to the surface of a metal base material, and the metal base material is protected against corrosion of corrosive media such as acid, alkali and salt.

The invention discloses a preparation method of C3H5NO-ZnCl2, a preparation method of Mg4Al2Zn2PO4 hydrotalcite, a preparation method of an intumescent flame-retardant epoxy acrylate coating and a coating thereof, phosphate radical series hydrotalcite is prepared by adopting a coprecipitation method, the phosphate radical series hydrotalcite is matched with ZnCl2 and EA, and the coating is formed by UV curing, so that the flame-retardant property of the epoxy acrylate coating (EA) is improved, and the flame-retardant property of the coating is improved. The result shows that ZnCl2 can be well inserted into the hydrotalcite layer; the flame retardant effect of the Mg4Al2Zn2PO4-C3H5NO-ZnCl2 (1: 1) / EA coating is optimal, and the carbon residue rate, the limit oxygen index and the vertical combustion level of the coating are optimal and are respectively 56.84%, 56 and V-0. Meanwhile, the flame-retardant coating has good transparency and mechanical properties, the light transmittance of the flame-retardant coating can reach 92% at most, and the hardness of the flame-retardant coating reaches 6H; the thermal decomposition temperature is high, the high-temperature calcined carbon layer structure is a regular hexagonal honeycomb-shaped stable structure, and the flame retardant property is high.

The invention provides an anti-dazzle liquid and a preparation method thereof, and an anti-dazzle film and a preparation method thereof, and belongs to the technical field of optical films. The anti-dazzle liquid comprises micron inorganic particles of which the surfaces are modified with polar groups, UV curing resin with hydroxyl, a high-surface-tension active monomer and a polar solvent; wherein the surface tension of the high-surface-tension active monomer is greater than or equal to 35 dyne / cm. The anti-dazzle liquid is matched for use, the micron inorganic particles can be exposed and protrude out of the outer surface of the anti-dazzle layer after the anti-dazzle liquid is cured, and the high-surface-tension active monomer with the dyne value within the range can be matched with the polar groups for modifying the surfaces of the micron inorganic particles to improve the dyne value of the anti-dazzle layer formed by the anti-dazzle liquid; besides, the UV curing resin with hydroxyl groups can form bonding with polar groups modified on the surfaces of the micron inorganic particles through the hydroxyl groups, and the wear resistance of an anti-dazzle layer formed by the anti-dazzle liquid is improved, so that the anti-dazzle layer formed by the anti-dazzle liquid has high dyne value and friction resistance while having anti-dazzle performance.

Methods and apparatus for fabricating solid three-dimensional objects from liquid polymerizable material at high resolution. Material (202) is non-digitally coated on a film (204), excess material is digitally removed by a laser, leaving a negative of the layer to be printed, and then the image is joined with existing portions of the object (220) being fabricated and exposed to a non-digital UV curing light source. Since the only portion that is digitized is the material removal, and this portion is done by a laser, the printing speed and robustness of the fabrication process are significantly improved compared to conventional additive or 3D fabrication techniques.

The application discloses a VR lens surface antistatic coating and a preparation method thereof, and belongs to the technical field of functional coating. The coating is composed of UV curing resin, active diluent, photoinitiator, doped conductive particles and leveling agent; the preparation method comprises the following steps: preparation of doped conductive particles, preparation of antistatic coating, coating and curing of the antistatic coating. In order to solve the problems of easy agglomeration of conductive particles in the existing coating, poor compatibility, insufficient antistatic durability and the like, the application proposes a scheme combining covalent grafting modification and step-by-step dispersion, realizes stable anchoring and uniform dispersion of the conductive particles, has high efficient antistatic property, high light transmittance and strong adhesion under low addition amount, is long-term stable, and is suitable for VR lens surface modification.

The invention relates to the field of UV adhesive materials, in particular to a free radical cation hybrid red UV adhesive for flat cable bonding and a preparation method thereof. The free radical cationic hybrid red UV adhesive is prepared from the following raw materials: a cationic UV curing resin monomer, free radical resin, a free radical monomer, a cationic photoinitiator, a free radical photoinitiator, a coupling agent, a thixotropic agent, a reinforcing combination agent, a red pigment and the like. The finally prepared red UV adhesive not only can combine the advantages of two UV curing systems to realize low energy and complete curing and rapid curing of an illumination shadow area and a thick layer, but also can maintain excellent storage stability, environmental aging resistance and other properties, greatly improves the comprehensive properties of the UV adhesive, and has wide application prospects. The application quality and the service life are improved.

The invention belongs to the field of automobile interior manufacturing, and discloses an automobile interior real wood surface digital printing process which comprises the following steps: S1, preparing a base material: selecting a wood veneer of 0.3-0.6 mm, cutting the wood veneer, polishing, spraying water for humidifying and mechanically leveling; the surface of the wood veneer is colored and sprayed with a transparent resin protection layer, then the surface of the protection layer is treated through a plasma surface treatment technology, and the surface energy and the chemical activity of the protection layer are improved; s3, digital printing: coating the surface of the treated protective layer with a bottom coating liquid, printing a pattern by using digital jet printing equipment, and then carrying out UV curing; s4, interior trim part forming, wherein the printed and cured wood veneer is attached to the automobile interior trim plastic base material at the temperature of 55-60 DEG C; and S5, surface layer protection: applying transparent protective finish paint on the surface of the laminated product. The process can solve the problems that the printing definition of an ink layer on the real wood surface of the existing automotive trim is low, and the ink layer is easy to peel, wrinkle and bloom in the processing or using process.

The invention provides an automatic coupling device for a fast-axis beam of a micro-channel laser stack array, and relates to the technical field of semiconductor lasers. The device comprises an optical platform, and the optical platform is provided with a stack array adjusting subassembly, a power-up subassembly, a UV curing subassembly, a lens adjusting subassembly, a dispensing subassembly, a near-field detection subassembly and a far-field detection subassembly. The stack array adjusting part is used for installing the stack array, and the power-up part is used for powering up the stack array. And the UV curing subassembly is used for curing the ultraviolet glue. And the lens adjusting subassembly and the dispensing subassembly are respectively used for adjusting the position of the fast axis collimating lens and dispensing. The SAC lens is arranged on a sliding plate of the dispensing subassembly through a fixing rod, during coupling, laser emitted by the micro-channel laser sequentially passes through the fast axis collimating lens and the SAC lens and then is divided into a far-field light beam and a near-field light beam by the beam splitter prism, the near-field light beam enters the near-field detection subassembly, and the far-field light beam enters the far-field detection subassembly. The device effectively solves the problems of low production efficiency, poor coupling precision and the like in the existing coupling mode.

The utility model discloses a coating curing and baking device, and particularly relates to the technical field of material processing equipment. The device comprises a curing machine box, a guide assembly is arranged at the bottom of the inner side of the curing machine box, a material bracket is arranged at the top of the guide assembly, a storage assembly is arranged above the top of the material bracket, flow guide assemblies are arranged on the two sides of the inner wall of the curing machine box, and an electric control box is fixedly installed on the end face of the top of each flow guide assembly. A curing and baking assembly is arranged in the electric control box, and flow guide plates are mounted on the end faces of the two sides of the electric control box; according to the coating curing and baking device, the ventilation effect in the curing machine box can be conveniently adjusted; a stable supporting and guiding effect can be achieved on the material bracket, and the situation that the material bracket slides is avoided; in addition, the workpieces can be conveniently supported and unloaded, and the use convenience is improved; and meanwhile, the uniform hot drying and UV curing functions can be achieved, and the coating curing quality is effectively improved.

The present application relates to the technical field of heat plate, and specifically discloses a heat plate and a processing method thereof, which comprises a plate body with an internal cavity, a first water injection port communicated with the internal cavity is arranged at one end of the plate body, and the heat plate further comprises a removable structure arranged at one end of the plate body; a water injection channel and a gas storage chamber communicated with the water injection channel are arranged in the removable structure, one end of the water injection channel is communicated with the outside, the other end of the water injection channel is communicated with the first water injection port, and the gas storage capacity of the gas storage chamber is equal to or greater than the exhaust capacity of the internal cavity after being injected with water. The present application cancels the water injection pipe and the air extraction structure, reduces the overall length, increases the removable structure, simultaneously injects water and exhausts air through the removable structure, simplifies the production process, improves the liquid injection stability, and cancels the cannula and the UV curing process.

The invention discloses an integrated optical chip processing method for improving the full-temperature stability of a lithium niobate electro-optical modulation coefficient. The method comprises the steps that S1, the surface of an integrated optical chip is coated with a layer of photoresist with the thickness ranging from 20 micrometers to 30 micrometers, and thermocuring treatment is conducted after bonding; s2, two to-be-ground and polished end face areas of the integrated optical chip are each bonded with an accompanying piece through removable pyrolysis glue, and UV curing is carried out after bonding; s3, the integrated optical chips bonded with the accompanying chips are bonded with pyrolysis glue, and UV curing treatment is carried out; and S4, after the end face is processed, the assembly is soaked in warm water at the temperature of 85 DEG C to remove the pyrolysis glue, separation of the integrated optical chip and the chip and separation of the accompanying chip and the chip are completed, after the chip is completely separated, the chip is soaked in acetone at the normal temperature to remove the photoresist on the surface, and processing of the end face of the integrated optical chip is completed.

This invention relates to the field of special optical fiber processing and sensing optical cable fabrication technology, specifically to an adjustable pitch multi-satellite disk sensing optical fiber cabling system and method. The system includes a central fiber release assembly, satellite release assemblies, a revolution winding assembly, a coating assembly, a pressure adhesive supply assembly, a UV curing assembly, a length counting assembly, a winding assembly, and a controller. The central fiber and several outer fibers converge in the coating assembly and are coated with UV-curable adhesive. The outer fibers are spirally wound around the central fiber by the satellite release assembly along with the revolution winding assembly, forming a special sensing optical cable after curing. The controller determines the revolution speed n=60v / p based on the set pitch p and the central fiber linear velocity v, achieving controllable linkage between pitch and speed. This system is suitable for the fabrication of shape sensing optical cables, temperature-strain synchronous measurement optical cables, heterogeneous fiber integration, and distributed / composite sensing optical cables, and has advantages such as compact structure, adjustable pitch, and high cable consistency.

The application provides a packaging adhesive film and a photovoltaic module. The packaging adhesive film comprises a UV curing buffer layer and a thermal curing adhesive layer which are stacked in sequence, wherein the material of the UV curing buffer layer comprises a modified POE resin and a UV assistant crosslinking agent, the modified POE resin is grafted with a photoinitiator molecular fragment containing and / or a functional group, wherein "*" represents the connection position thereof in the photoinitiator molecular fragment. The pre-crosslinking degree gradually decreases in the UV curing buffer layer along the direction close to the thermal curing adhesive layer, thereby preventing the problem that the packaging adhesive film penetrates into the gap between the solder strip and the cell piece to form a false weld due to excessive flowability, avoiding the problem that the overall pre-crosslinking degree of the UV curing buffer layer is too large to cause hidden cracks on the cell piece during the laminating process, and preventing the problems of yellowing caused by the migration of the initiator and the precipitation of the assistant, and solving the problems of easy formation of false weld and occurrence of hidden cracks on the cell piece during the packaging of the HJT cell.

This invention relates to a precision coating equipment for processing anti-glare, high-strength lightbox fabric, specifically in the field of lightbox fabric surface coating technology. The equipment is based on a mounting platform and equipped with a dust-free coating chamber. Symmetrical unwinding and rewinding units are arranged on both sides of the chamber, integrating tension adjustment and deviation correction guiding structures to ensure stable fabric transport. Inside the dust-free coating chamber, substrate pretreatment, preheating and flattening, precision coating, and curing and cooling units are sequentially arranged. Plasma activation and dust and static electricity removal improve substrate performance, while preheating and flattening eliminate fabric wrinkles. Slit coating combined with a flexible scraper controls coating thickness, and a synergistic structure of UV curing and air / water cooling enables rapid coating settling. This equipment enables continuous dust-free coating operations with high coating precision and good substrate adhesion, effectively improving problems such as coating peeling and uneven thickness. It is suitable for processing various specifications of lightbox fabric, has a high degree of automation, and significantly improves production efficiency and product quality.

This utility model relates to a lifting UV curing device, comprising: a curing chamber, a glass plate, a lifting device, a UV lamp, and a support plate. The curing chamber is located above the support plate. The lifting device drives the curing chamber to move up and down relative to the support plate. The top surface of the curing chamber has a through opening. The glass plate seals the opening and is fixedly connected to the curing chamber. The UV lamp is located above the glass plate. The curing chamber has an air inlet and an air outlet. This utility model allows the curing chamber or fixed plate to be sealed, with air extracted and nitrogen introduced, thereby reducing the oxygen content around the UV adhesive on the semiconductor, ensuring the quality of UV adhesive curing, and preventing the oxygen-sensitive material from yellowing and failing to polymerize. The curing chamber and UV lamp are fixedly connected and move up and down together. The simple structure also prevents ultraviolet light leakage from the curing chamber, reducing harm to workers and surrounding equipment.

The invention provides an acrylate polymer for an OCA optical adhesive, a single-layer OCA optical adhesive with a gradient cross-linked structure and a preparation method and application, and relates to the technical field of optical adhesives, the oxygen inhibition effect in the UV curing process is ingeniously utilized, the gradient cross-linked structure with the upper portion being soft and the lower portion being hard is actively constructed in a single adhesive layer, and the single-layer OCA optical adhesive with the gradient cross-linked structure is obtained. Therefore, contradictory properties (such as softness / hardness, initial adhesion / high strength and filling / glue overflow resistance) are integrated, and the technical problem that the existing homogeneous OCA cannot give consideration to various properties is solved.