254 results about "Light cure" patented technology

The application belongs to the technical field of oral orthodontic medical instruments, and discloses a system of invisible appliance convertible position rigid anchorage accessory and an assembling method thereof. The embedded rigid anchorage accessory comprises an oral commonly used light-cured resin accessory body and a metal framework integrally embedded in the interior of the accessory body. The metal framework has an anchoring section completely embedded in the accessory body and an anchor-shaped connecting section extending out of the surface of the accessory body. The anchor-shaped connecting section is configured as a barb-shaped or T-shaped structure suitable for accommodating a ligation wire and forming a mechanical lock, and has a bidirectional force control function. The application constructs an absolute anchorage system without relative displacement between teeth and implant anchorage, avoids side effects caused by insufficient anchorage or poor patient cooperation in traditional elastic traction, and only needs to grind off the anchor-shaped connecting section on the surface of the accessory body after the anchorage structure completes the function, so as to become a standard vertical rectangular accessory to play a role.

The application discloses a UV light-cured coating composition, a preparation method thereof and application thereof on an aluminum base. The UV light-cured coating composition comprises a UV light-cured primer and a UV light-cured topcoat. The UV light-cured primer is composed of polyurethane acrylate resin, first acrylate monomer, photoinitiator, adhesion promoter and wetting and leveling agent in a specific ratio, and can be directly cured on the surface of an aluminum base without pre-treatment to form a coating layer with excellent adhesion. The formula of the UV light-cured topcoat is optimized, so that when the topcoat is used in combination with the primer, the combination of the topcoat and the primer is effectively promoted, and the coating layer has excellent insulation performance. The UV light-cured coating composition provided by the application can form a composite coating layer with strong adhesion, excellent insulation performance and high stability on the surface of the aluminum base without pre-treatment such as laser texturing or chemical passivation.

The application discloses a kind of bio-based LED light-cured top-dipping pencil paint and its preparation method and application, including the following mass fraction of composition: epoxy acrylate: 27%~40%, epoxy soybean oil acrylate: 12%~15%, di-functional polyurethane acrylate: 8%~30%, dipropylene glycol diacrylate: 10%~20%, fumed silica: 0.2%~0.5%, inorganic filler: 10%~20%, photoinitiator: 5%~10%, auxiliary agent: 0.5%~1%. The pencil paint of the application meets the requirements of relevant laws and regulations for pencil paint export, the bio-based carbon content is greater than or equal to 15%, uses LED lamp to cure, is energy-saving and environment-friendly, the paint film has high flexibility, can be used for eyebrow pencil, and there is no risk of subsidence.

The utility model discloses a kind of ultraviolet light solidification oxygen inhibition inhibiting device, comprising: horizontal transport processing platform, suit sealing support, a pair of hydraulic sealing door, ultraviolet light solidification structure and oxygen inhibition inhibiting structure, the utility model relates to ultraviolet light solidification technical field, full-sealing inert environment control system, adopt double hydraulic sealing door and gas replacement device linkage, realize the oxygen content≤50ppm oxygen-free environment by flow valve accurate control, cooperate with gas detector real-time monitoring, effectively inhibit oxygen inhibition effect, significantly improve the solidification quality of light-cured material surface layer;Multi-dimensional motion adjusting mechanism, longitudinal and transverse two-way positioning system constructed by three-stage screw module, cooperate with the vertical lifting assembly of electromagnetic drive, realize the repeat positioning accuracy of ±0.05mm of spray head group, can be compatible with 50-300mm width range of workpiece adaptive processing.

The method for forming the gap material bumps includes: providing a substrate, and the substrate has an alignment film thereon; placing a metal mold on the alignment film, and the metal mold has a plurality of through holes penetrating the metal mold; filling a light-cured material into the through holes of the metal mold, and pre-curing the light-cured material by ultraviolet rays; removing the metal mold; and after removing the metal mold, secondarily curing the light-cured material by ultraviolet rays to form a plurality of gap material bumps, wherein the alignment film and the material of the gap material bumps are different.

The application discloses a kind of based on photosensitive bioceramics deciduous tooth additive manufacturing forming process, it is related to ceramic deciduous tooth manufacturing technical field, comprising the following steps: using oral scanner to collect children's dental three-dimensional data, generate deciduous tooth restoration three-dimensional data model and export STL format deciduous tooth repair model;Using photosensitive liquid bioceramic composite material, through DLP photocuring 3D printing into initial blank, again through blue light three-stage resolidification and get blank body.In the process, the morphological characteristics of adjacent healthy deciduous teeth can be accurately extracted, and the crown height correction coefficient is automatically matched according to the age of the child, effectively compensating for the size deviation of the unerupted deciduous teeth, ensuring that the size error of the restoration is small, adjusting the occlusal surface morphology of the restoration according to the actual data of the teeth at the same time, making the occlusal contact area ratio higher, and reserving occlusal buffer space to avoid excessive local stress, significantly improving the mastication comfort and durability of the restoration.

A decorative sheet according to one embodiment of the present invention comprises: a base layer; a transparent layer provided on the base layer; and an ultraviolet cured coating layer provided on the transparent layer, wherein the ultraviolet cured coating layer comprises acrylic resin and an ultraviolet absorbent, and the rate of change of ultraviolet absorbent content in the ultraviolet cured coating layer is 10% or less under accelerated assessment using method 1.

The invention belongs to the technical field of micro-nano machining, and particularly relates to a hollow metal nano array and a preparation method and application thereof. According to the invention, a regular polymer nano array is prepared based on an ultraviolet light curing nano imprinting technology and a plasma etching technology; then metal evaporation is carried out in combination with an electron beam evaporation dip angle evaporation process, so that the surface of the polymer nano array is partially coated with metal, and a polymer / metal composite nano array with a notch is obtained; and dissolving by using a solvent to remove the water-soluble polymer nano-columns in the polymer / metal nano-array with the notches, so as to prepare the large-area hollow metal nano-array of which the morphology, the size and the period can be flexibly designed. Sulfydryl benzaldehyde molecules are fixed on the surface of the hollow metal nano array to form an SERS (Surface Enhanced Raman Scattering) substrate which is used for detecting hydrazine hydrate. The SERS substrate prepared on the basis of the hollow metal nano array shows high sensitivity, specificity, repeatability and stability.

Provided is a light-curable composition that includes one or more monofunctional (meth)acrylate monomers with at least one monomer having a homopolymer glass transition temperature of from 0°C to 200°C; a crosslinker selected from multifunctional oligomeric (meth)acrylates, aliphatic urethane (meth)acrylates, aromatic urethane (meth)acrylates, polyester (meth)acrylates, and epoxy (meth)acrylates; one or more adhesion promoters selected from glycidyl (meth)acrylate, 2-hydroxyethyl(meth)acrylate acid phosphate, phosphonate ester-containing (meth)acrylic monomer, phosphate ester-containing (meth)acrylic monomer, silane, and (meth)acrylic acid; a photoinitiator; a flame retardant; and one or more fillers comprising hollow fillers, refractory fillers comprising kaolin, intumescent fillers, or mixtures thereof. The cured composition can function as an electrical insulator in battery assemblies, while protecting components from hot particles and gases in case of thermal runaway events.

To propose a construction method for earthquake-resistant flexible joints and a method for repairing concrete members that can save materials and reduce working time. [Solution] The construction method S100 for seismic-resistant flexible joints includes: a deterioration confirmation step S3 in which deteriorated parts are confirmed by tapping the concrete areas along both sides of the joint between concrete members; a filler filling step S5 in which a photocurable filler 26 is filled into the recess where the concrete of the deteriorated part has been removed and made flat; a light irradiation step S6 in which the photocurable filler is cured by irradiating it with light of a wavelength that hardens the flattened photocurable filler; and an expansion member fixing step SA in which an expansion member 21 that covers the joint is fixed via anchor bolts 23, wherein the expansion member is fixed in a state in which part or all of it is in contact with the surface of the photocurable filler.

The application provides a method for post-processing of a photosensitive resin component, and belongs to the technical field of photosensitive resin, and comprises the following steps: immersing the photosensitive resin component into a solution to obtain an intermediate; and sequentially performing atomization treatment and solidification on the intermediate to complete the post-processing. The photosensitive resin component is placed in an atomized environment for photocuring, the surface properties of the component are improved, the adhesion of the model surface is reduced to a certain extent, the surface color of the original component is changed, the surface smoothness is increased, the surface quality of the component after solidification is improved, the surface protection effect of the component is achieved, and the service life of the photosensitive resin component is prolonged.

This invention discloses a low-functionality photocurable resin and its preparation method, comprising: dissolving polybenzimidazole in a polar aprotic solvent in an inert gas atmosphere to obtain a polybenzimidazole solution; adding sodium hydride in a molar amount equal to 0.8–1.2 times the molar amount of the polybenzimidazole resin to the polybenzimidazole solution, reacting the mixture, then adding allyl bromide in a molar amount equal to 0.8–1.2 times the molar amount of the polybenzimidazole resin, reacting again to obtain a polybenzimidazole prepolymer; dissolving the polybenzimidazole prepolymer in a polar aprotic solvent, adding a crosslinking agent and a photoinitiator, and mixing to obtain a photocurable resin solution; irradiating the photocurable resin solution with ultraviolet light, and drying to obtain a photocurable resin with a functionality of 20%–44%. This invention features a low allyl content, allowing for the curing of aromatic resins with less crosslinking agent, and the cured resin exhibits excellent heat resistance and ultra-high mechanical strength.

This utility model discloses an extrusion-type UV-curable adhesive applicator, comprising: an adhesive cartridge; a limiting sleeve fixedly connected to the left side of the cartridge; a micro motor fitted and fixedly located at the center of the left side of the limiting sleeve; a rotating drum fixedly connected to the right output end of the micro motor; a threaded extrusion rod threadedly connected to the inner side of the rotating drum; a piston fixedly connected to the right end of the threaded extrusion rod extending into the inner side of the cartridge; the piston slidingly engaging with the cartridge; an extrusion head fitted and fixedly located on the inner right end of the cartridge; an insertion rod engaged and fixedly located on the inner right end of the extrusion head; and several combined applicators fitted and fixedly located on the outer right end of the insertion rod. This allows the adhesive to be extruded at the same rate, accurately controlling the extrusion volume. Compared to manual extrusion from the bottle, this method is more stable and efficient. Furthermore, different shapes and sizes of applicators can be replaced according to different coating tasks to adapt to various complex coating patterns and surfaces.

This utility model relates to the field of 3D printer technology, specifically a recessed photopolymerization 3D printer, including a printing platform, which includes an operating platform with a groove. A feeding cylinder and a forming cylinder are fixedly connected to the bottom of the operating platform, and the inner cavities of the feeding cylinder and the forming cylinder communicate with the groove. An LED light source assembly is positioned above the operating platform for printing materials. A dual scraper assembly is positioned on the top surface of the operating platform to spread the raw material evenly. A conveying assembly is positioned on the top surface of the operating platform and is connected to the dual scraper assembly for horizontally moving the dual scraper assembly back and forth. A second motor on the front side drives a front threaded rod to rotate, which in turn drives a front movable frame to slide up and down. The movable frame drives the front material-carrying platform to slide up and down within the feeding cylinder, using a piston-like extrusion feeding method to precisely control the amount of raw material extruded. This design is convenient to operate and clean, avoiding material waste caused by cleaning the peristaltic pipes.

The utility model relates to UV curing coating machine technical field, and disclose a kind of light-cured release film UV curing coating machine, the top left end of base is fixedly connected with mount no.

The present invention relates to a novel dental prosthetic material and a patient-customized dental prosthesis comprising same, the material improving water resistance, reproducing a color similar to an actual tooth, and thus improving the aesthetic appearance even after prosthetic treatment. In addition, patient-customized prosthetic treatment can be performed using a 3D printer on a tooth requiring prosthetic treatment. The material exhibits enhanced physical properties compared to existing photocurable resin compositions and has excellent adhesive strength, thereby preventing a dental prosthesis from detaching after treatment.

The application provides a preparation process of photocuring pressure sensitive adhesive, and relates to the technical field of pressure sensitive adhesive preparation, and comprises the following steps: S1, performing targeted pretreatment on core raw materials of photocuring pressure sensitive adhesive to obtain pretreated raw materials; S2, obtaining target performance parameters and target performance priority input by a user, calling performance parameter ranges corresponding to target scenes from a classified historical database to obtain a final customized formula data matrix and a process parameter data matrix; S3, preparing uniform photocuring pressure sensitive adhesive materials; S4, preparing a composite blank; S5, preparing a pressure sensitive adhesive semi-finished product; S6, performing aging treatment on the pressure sensitive adhesive semi-finished product, and obtaining a customized photocuring pressure sensitive adhesive finished product after slitting, film coating and finished product checking. The application can flexibly respond to individualized demands of different users and different scenes, and can realize performance adaptation through accurate design of the customized matrix, whether it is the requirement of high peel strength in the electronic field or the requirement of mild adhesive force in the medical field.

The application is suitable for the technical field of photovoltaic modules, and provides an optical polymer, an application method, a cell, a photovoltaic module and a photovoltaic system.The optical polymer comprises, by weight, 20-50 parts of a photocuring oligomer, 30-60 parts of a photocuring monomer, 20-70 parts of high-refractive nanoparticles, 0.5-10 parts of a nanodispersion agent, 1-10 parts of a photoinitiator system and 0.1-5 parts of an auxiliary agent.The viscosity of the optical polymer is 8-25 mPa·s at a temperature of 40-60 degrees Celsius, and the refractive index of a cured film formed after curing of the optical polymer is 1.60-1.75 at a wavelength of 600 nm.Due to the synergistic effect of the specific sulfur-containing or high-refractive monomer and the surface-modified nanoparticles used in the optical polymer, the refractive index of the cured film formed after curing is 1.60-1.75 under irradiation at a wavelength of 600 nm, thus effectively matching the refractive index difference between the encapsulation adhesive film and the cell antireflection film, reducing the interface reflection loss, optimizing the light transmission, reducing the reflection loss at the interface between the encapsulation adhesive film and the cell antireflection film, and thus improving the efficiency of the photovoltaic module.

A method for preparing a variable stiffness flexible composite material tube and its application belong to the field of engineering composite material preparation. The method involves mixing a UV curing agent, an imidazole derivative curing agent, acrylate resin, and epoxy resin, followed by vacuuming to remove air bubbles, then compounding with carbon fiber cloth. Using a polytetrafluoroethylene rod mold, the mixture is irradiated with ultraviolet light for 8-12 minutes, followed by pre-curing at 110-130℃ for 2.5-3.5 hours, and then curing at 140-160℃ for 2.5-3.5 hours to obtain a rigid material. This invention, through molecular synthesis design, prepares imidazole derivatives with higher molecular weights, improving the shelf life of the flexible material and thus significantly increasing the workability. The prepared imidazole derivatives are in a liquid state, greatly improving compatibility with the resin system. Through molecular synthesis design, the prepared imidazole derivatives can undergo a Michael reverse reaction at 120℃, releasing 2-ethyl-4-methylimidazolium, thereby achieving reaction polymerization at a lower temperature and improving application efficiency.

Provided is a photocurable resin composition used for producing a three-dimensional formed article by a liquid tank photopolymerization method, the photocurable resin composition containing (A) a radically polymerizable monomer, (B) an inorganic filler, (C) a photopolymerization initiator, (D) an activated light absorbent, (E) a polymerization inhibitor, and (F) a chain transfer agent, wherein: at least 90 mass % of the component (A) has two or more (meth)acryloyl groups in the molecule, and is composed of a polyfunctional (meth)acrylate-based radically polymerizable monomer (a) having 5 to 25 atoms constituting a main chain of a divalent group interposed between the two or more (meth)acryloyl groups; and the component (a) is composed of a polyfunctional monomer a1 having a specific group such as a urethane group and a polyfunctional monomer a2 other than the polyfunctional monomer a1. Also provided is a method for producing a three-dimensional photoformed article by using the photocurable resin composition.

The utility model discloses a kind of optical fiber sensing formula light-curing lamp of deformability, it is related to medical instrument technical field, including handle, the outer surface of handle is fixedly installed with lamp pole, the outer surface of handle is fixedly installed with display screen, the side of handle away from lamp pole is fixedly installed with charging end;The inside of lamp pole is provided with the adjusting mechanism of angle convenient to adjust, the adjusting mechanism includes the optical fiber light guide stick of deformability, the optical fiber light guide stick is movably installed in the outer surface of lamp pole.The optical fiber sensing formula light-curing lamp of deformability, angle adjustment is carried out by control switch groove silk drive optical fiber light guide stick, and optical fiber light guide stick is installed with sensor, the distance between real-time sensing and oral cavity interior photosensitive resin is facilitated, to provide position reference for medical staff, and angle adjustment is carried out by the optical fiber light guide stick of deformability, more accurate irradiation to oral cavity interior is realized, reduce the operation time of doctor, guarantee the solidification effect to photosensitive resin.

In a method for cleaning process, a substrate on which a layer is formed may be loaded on a substrate stage. A photocurable resin may be spin coated on the layer to form a photocurable resin layer. Light may be irradiated onto the photocurable resin layer for curing the photocurable resin layer to form a polymer layer containing particles adsorbed from a surface of the layer. The polymer layer containing the particles may be removed.

This invention provides a visual curing follow-up printing system and method. The printing system includes a printing mechanism, a follow-up curing device, and a driving mechanism. The printing mechanism is used to print photocurable adhesive onto a substrate surface. The follow-up curing device includes a light generator, which emits curing light to cure the photocurable adhesive flowing from the printing mechanism onto the substrate surface. The printing mechanism includes a printing needle, and the light generator is sleeved around the printing needle. The light generator forms a light-covered area and a light-blocked area relative to the substrate, and the light-blocked area has several observation windows. The driving mechanism is used to drive the light generator to move relative to the printing needle. This application allows real-time observation of the printing status of the printing needle through the observation windows. When the printing needle becomes clogged or has material buildup, printing stops, and the driving mechanism drives the light generator to move relative to the printing needle for inspection or cleaning.

The application discloses a black matte epoxy adhesive film for a display module and a preparation method thereof. The adhesive film comprises, in sequence, a light release film layer, a transparent adhesive film layer, a black adhesive film layer and a heavy release film layer. The transparent adhesive film layer and the black adhesive film layer both contain raw materials such as epoxy resin, epoxy curing agent and modified UV resin in a specific ratio. The modified UV resin is prepared from polyol, isocyanate and hydroxy acrylate through a specific process. The black and transparent film layers are prepared by step-by-step preparation of glue, and the four-layer composite structure is formed through roll coating, compounding and weak light curing. The adhesive film has excellent matte effect and ink color consistency, low internal stress, firm adhesion, strong environmental stability, simple and efficient preparation process, small equipment investment, and is suitable for display module packaging requirements and mass production.

A resin based material whose composition includes a light-curable mixture of monomers of no more than 35 wt. % of an ethoxylated difunctional bisphenol A dimethacrylate; of no more than 10 wt. % of a methacrylate monomer; of no more than 10 wt. % of a difunctional urethane acrylate; of no more than 0.1 wt. % of an optical brightener; of no more than 5 wt. % of silica particles having methacrylate functionalization layers and having an average particle size of less than about 200 nm; of having more than 40 wt. % of an inert glass; of no more than 15 wt. % of a heavy metal oxide; of no more than 2.5 wt. % of an ultraviolet / visible (UV / Vis) light-photo-polymerization initiator; a colorant; and a stabilizer.

A manufacturing method of a window includes placing a substrate in a guide film accommodating the substrate and provided with an opening, which is defined through a guide film to overlap a portion of the substrate in a plan view, providing a first solution, which contains a light blocking particle and a polymer resin, to an edge portion of an inner space of the guide film, where the inner space is divided into a center portion overlapping the opening in the plan view and the edge portion, which is outside the center portion, providing a second solution containing the polymer resin to the center portion, placing a magnet to overlap the edge portion in the plan view to allow the light blocking particle to move by the magnet, and curing the light blocking particle and the polymer resin using ultraviolet light to form the black matrix and the coating layer.

The present invention provides a photocurable acrylic resin for imprinting that has low viscosity in the uncured resin composition and excellent heat resistance in the cured resin composition. [Solution] The photocurable acrylic resin for imprinting is a photocurable acrylic resin for imprinting that contains a photopolymerization component, wherein the photopolymerization component comprises resin (A) and resin (B), where resin (A) is a monofunctional acrylate monomer having one or both of a phenyl group and a benzyl group, and resin (B) is a bifunctional compound, the content of resin (A) relative to the total photopolymerization component is 20% by mass or more and 42% by mass or less, and the content of resin (B) relative to the total photopolymerization component is 43% by mass or more and 66% by mass or less.