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1485 results about "Light cure" patented technology

A dental curing light is a piece of dental equipment that is used for polymerization of light cure resin based composites. It can be used on several different dental materials that are curable by light.

Antistatic aerogel for 3D printing and preparation method and application thereof

The invention belongs to the technical field of aerogel materials, and particularly relates to antistatic aerogel for 3D printing as well as a preparation method and application of the antistatic aerogel. The preparation method comprises the following steps: (1) dispersing inorganic nanoparticles modified by a silane coupling agent containing epoxy groups and an aniline monomer in an acidic solvent to obtain a monomer mixed solution; (2) stirring and dissolving polyamide in the monomer mixed solution; (3) initiating a reaction to obtain a polyaniline modified polyamide solution; and (4) freeze-drying to obtain the antistatic aerogel for 3D printing. By controlling synthesis conditions, a core-shell structure of acid-doped polyaniline coated inorganic nanoparticles is formed, and a good conductive path is formed in polyamide with a small addition amount of polyaniline. The antistatic aerogel for 3D printing can be applied to technologies such as photocuring molding and fused deposition of polyurethane resin in a 3D printing technology, and the antistatic property and the mechanical property of a 3D printed product are improved.
Owner:SUZHOU GANGRUITONG NANO MATERIALS TECH CO LTD

Layered drug-loading microneedle patch as well as preparation method and application thereof

The invention relates to a layered drug-loading microneedle patch as well as a preparation method and application thereof. The preparation method of the layered drug-loading microneedle patch comprises the following steps: S1, dissolving a drug and a soluble high-molecular polymer in a solvent according to a mass ratio of (2: 1)-(1: 12) to form a needle tip solution, then filling a needle tip cavity of a microneedle mold with the needle tip solution, drying, and removing redundant drug residues on the surface to form a drug-loading needle tip layer; and S2, filling a mold containing the drug-loading needle tip layer with a photocurable polymer, performing ultraviolet curing for 10-30 seconds under the wavelength of 365-405 nm, and then performing demolding to form a substrate layer, thereby obtaining the layered drug-loading microneedle patch. According to the method, one-time filling of the needle tip part is successfully achieved by combining needle tip auxiliary material proportion optimization, meanwhile, the curing process is rapid, the medicine utilization rate and the process stability are remarkably improved, the medicine stability is good, and the method is suitable for industrial production.
Owner:BEIJING CAS MICRONEEDLE TECH LTD

Decorative material with 3D texture structure and preparation method and application thereof

The invention relates to the technical field of decorative materials, in particular to a decorative material with a 3D texture structure and a preparation method and application of the decorative material. The method comprises the following steps: carrying out digital printing on a pretreated substrate to obtain a 2D pattern layer on the surface of the substrate; coating the surface of the 2D pattern layer with a photocuring coating, carrying out preliminary curing, and then carrying out ink-jet printing of a texture developing solution on the surface subjected to preliminary curing to carry out secondary curing, so as to obtain a cured coating; the cured coating comprises a hardened part and an unhardened part; and after an unhardened part in the cured coating is removed through polishing and wire drawing, a surface coating is coated, and the decorative material with the 3D texture structure is obtained. The textures with different widths and depths can be obtained in a manner of combining primary curing of the coating with ultraviolet absorption of the developing solution, and then a microcosmic coarse and visual smooth form is obtained through polishing and wire drawing treatment, so that the obtained 3D texture structure is closer to natural textures.
Owner:HUNAN BANFERT NEW MATERIALS TECH

Dual-curing polyurethane acrylate resin and preparation method thereof

The invention relates to the technical field of polyurethane acrylate, and particularly discloses dual-curing polyurethane acrylate resin and a preparation method thereof. Wherein the dual-curing polyurethane acrylate resin is prepared from the following raw materials: polyester polyol, polyether polyol, diisocyanate, hydroxyl acrylate, a chain extender, a photoinitiator, cardanol glycidyl ether, a polymerization inhibitor and modified nanoparticles. Wherein the citric acid and the polyethyleneimine are adopted to carry out synergistic modification on the nano particles, the dispersion stability of the nano particles is improved, so that the mechanical property of the resin is improved, the cardanol glycidyl ether and the photoinitiator generate a synergistic effect, and the resin can be quickly shaped through photocuring promoted by the photoinitiator; the cardanol glycidyl ether participates in the subsequent thermocuring reaction, so that the curing effect is improved, and the adhesive force between the film layer and the base material is enhanced.
Owner:ZHAOQING BAOJUN CHEM CO LTD

Bio-based light-cured polyurethane acrylate resin as well as preparation method and application thereof

The invention belongs to the technical field of high polymer materials, and particularly relates to bio-based light-cured polyurethane acrylate resin as well as a preparation method and application thereof. The preparation method of the bio-based light-cured polyurethane acrylate resin comprises the following steps: (1) mixing a catalyst, a first polymerization inhibitor, first hydroxyl acrylate and itaconic acid, stirring and reacting at 90-120 DEG C for 6-9 hours to obtain a reaction product, then adding epoxidized soybean oil, and stirring at 90-120 DEG C for 3-5 hours to obtain a prepolymer; and (2) cooling the prepolymer obtained in the step (1) to room temperature, dropwise adding second acrylic hydroxyl ester and diisocyanate, and then stirring and reacting at 30-60 DEG C for 1.5-4 hours until an NCO infrared peak value disappears, thereby obtaining the polyurethane acrylate. The resin is high in bio-based content, moderate in viscosity, good in flexibility, high in hardness, strong in adhesive force, high in glossiness, small in smell and good in storage stability, and is suitable for being applied to preparation of UV curing coatings, UV curing printing ink, UV curing adhesives, 3D printing materials and nail polish glue.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY +1

Sulfydryl silicon resin, UV (ultraviolet) photocuring organic silicon optical adhesive as well as preparation method and application of sulfydryl silicon resin

The invention discloses a sulfydryl silicon resin, a UV light-cured organic silicon optical adhesive as well as a preparation method and application thereof. The optical adhesive comprises sulfydryl silicon resin, vinyl polysiloxane and a photoinitiator, the molar ratio of sulfydryl in the sulfydryl silicon resin to vinyl in the vinyl polysiloxane is (1.2-1.5): 1; the molar ratio of vinyl in the vinyl polysiloxane to the photoinitiator is 1: (0.3-1.8). The optical adhesive disclosed by the invention can be subjected to rapid photocuring based on a click reaction of sulfydryl-vinyl, the preparation method of the optical adhesive does not need a solvent, and compared with conventional OCA, the optical adhesive has a certain filling advantage in the aspect of a full-lamination process, also has relatively high binding power, relatively low stress relaxation rate and excellent creep recovery rate, and can be used for preparing the optical adhesive. Therefore, the optical adhesive is especially suitable for flexible display application scenes represented by folding screens.
Owner:GUANGDONG UNIV OF TECH

Plastic coating process for high-performance metal wire for aerospace engineering

The invention relates to the technical field of metal wire processing, and discloses a high-performance metal wire plastic coating process for aerospace engineering, which comprises the following steps: carrying out base material type selection on a metal wire, and carrying out surface treatment of precise cleaning, etching and depth gradient activation; a Ti-Cr alloy and graphene-copper composite transition layer is deposited through a magnetron sputtering technology, and a multi-layer coating structure is formed through electrostatic spraying of a base coating, a fluidized bed dipping function layer and high velocity oxy-fuel spraying of a nano composite coating in sequence; the molybdenum-gold composite sealing layer is prepared by adopting an electric arc spraying technology, and is subjected to vacuum ultraviolet curing enhancement, high-temperature gradient annealing, gradient sintering and vacuum curing treatment; and heat radiation on the surface of the coating is enhanced through laser-induced micro-nano structure regulation and silicon nitride film sputtering. Through collaborative optimization of base material treatment, coating construction, function strengthening and quality control, the interface bonding strength, the comprehensive performance and the environmental adaptability of the spaceflight metal wire coating are remarkably improved, and the service life of the spaceflight metal wire coating is remarkably prolonged.
Owner:SUZHOU XINYI METAL PROD CO LTD

Preparation method of sodium alginate modified deep eutectic gel with wave absorption and strain sensing functions

The invention belongs to the technical field of deep eutectic gel wave-absorbing materials, and particularly relates to a preparation method of sodium alginate modified deep eutectic gel with wave-absorbing and strain-sensing functions, which comprises the following steps: mixing sodium alginate with deionized water, mechanically stirring for the first time to form gel A, adding a certain amount of acrylamide, mechanically stirring for the second time to form gel B, and stirring for the second time to form gel B; adding a certain amount of deep eutectic solution, mechanically stirring for the third time, performing ultrasonic vibration, vacuumizing to form gel C, and finally performing ultraviolet curing treatment on the gel C to obtain sodium alginate modified deep eutectic gel; according to the preparation method, complex equipment is not needed, the preparation period is short, the sodium alginate modified deep eutectic gel is added into deep eutectic solutions with different contents, the real part and imaginary part of the dielectric constant of the material are accurately controlled, the characteristic impedance is close to the free space impedance, meanwhile, the ion conduction efficiency is guaranteed, and optimization of wave absorption and sensing is achieved.
Owner:RES & DEV INST OF NORTHWESTERN POLYTECHNICAL UNIV IN SHENZHEN

Ultra-flexible stretchable dimming film and preparation method thereof

The invention discloses an ultra-flexible stretchable dimming film and a preparation method thereof, and relates to the technical field of dimming films, and the ultra-flexible stretchable dimming film comprises an upper transparent electrode layer, a dimming function layer and a lower transparent electrode layer which are sequentially stacked from top to bottom; the preparation method comprises the following steps: 1) preparing a main matrix material / ultraviolet curing resin mixture; 2) assembling the dimming film; and 3) ultraviolet light curing. According to the invention, through surface phosphonic acid functionalization treatment, covalent bond anchoring of cerium oxide nanoparticles is realized on a thermoplastic polyurethane fiber network; by constructing a full-thermoplastic polyurethane material system, the breakthrough of interfacial compatibility between a fiber reinforced phase and a polymer matrix is realized, so that the film has high tensile strain capacity and excellent fatigue resistance on the premise of keeping high transparency.
Owner:SHANGHAI ASTRACE NEW MATERIAL TECH CO LTD

Visual curing following printing system

The utility model provides a visual curing following printing system, which comprises a printing mechanism, a following curing device and a driving mechanism, and is characterized in that the printing mechanism is used for printing light curing glue on the surface of a substrate; the follow-up curing device comprises a light generator, and the light generator is used for emitting curing light to cure the light curing glue liquid flowing out of the printing mechanism to the surface of the substrate; the printing mechanism comprises a printing needle head, the printing needle head is sleeved with the light generator, the light generator forms a light coverage area and a light shielding area relative to the substrate, and a plurality of observation windows are arranged in the light shielding area; the driving mechanism is used for driving the light generator to move relative to the printing needle. The printing state of the printing needle head can be observed in real time through the observation window; and when the printing needle head is blocked or hangs materials, printing is stopped, the driving mechanism is adopted to drive the light generator to move relative to the printing needle head, and the printing needle head is overhauled or cleaned.
Owner:ENOVATE3D (HANGZHOU) TECH DEV CO LTD

Polymer electrolyte membrane with high ionic conductivity and preparation method thereof

The invention belongs to the technical field of polymer electrolyte membrane materials, and particularly relates to a high-ionic-conductivity polymer electrolyte membrane and a preparation method thereof.The preparation method comprises the steps that 1, PEO and lithium salt are added into a polar aprotic solvent, and the mixture is rapidly and violently stirred to be completely dissolved; (2) adding a cross-linking agent and a photoinitiator into the mixed solution, and violently stirring to obtain a mixed solution; and (3) coating the mixed solution in a polytetrafluoroethylene template, heating to remove the solvent, and performing ultraviolet radiation. According to the invention, a three-dimensional cross-linked network is formed by photocuring of an acrylate group of the cross-linking agent, PEO chain segment crystallization is inhibited, and lithium salt anions (such as TFSI-) are physically embedded. A benzene ring structure in a cross-linked network endows the electrolyte membrane with flexibility, mechanical property deterioration caused by a plasticizer or a diluent is avoided, the compact structure of the electrolyte membrane can inhibit lithium dendrite growth, the ionic conductivity reaches 1.7 * 10 <-4 > S / cm, and the electrochemical window reaches 4.9 V. The method is simple in process and suitable for large-scale preparation of the high-energy-density solid-state lithium battery.
Owner:HUANGGANG NORMAL UNIV

Tackified adhesive film

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.
Owner:BYE POLYMER MATERIAL CO LTD

Bending-resistant flexible cable and preparation method thereof

The invention belongs to the technical field of power cables, and particularly relates to an anti-bending flexible cable and a preparation method thereof.The cable sequentially comprises a conductor, an insulating layer, a buffer layer, a shielding layer and a protective layer from inside to outside, the insulating layer is divided into an inner layer, a middle layer and an outer layer in the radial direction, and the inner layer of the insulating layer comprises the following components in parts by weight; 100 parts of crosslinked polyethylene, 6-10 parts of amino-modified photoresponse graphene quantum dots, and 2-4 parts of a plasticizer DOS; 2-3 parts of amino modified photoresponse graphene quantum dots, 100 parts of crosslinked polyethylene and 2-4 parts of a plasticizer DOS; the protective layer comprises the following components in parts by weight; the insulation layer comprises 100 parts of shape memory polyurethane, 15-22 parts of composite microspheres and 0.5-1.0 part of a light stabilizer, and the insulation layer adopts a cross-linked polyethylene, amino modified light response graphene quantum dot gradient distribution and plasticizer system; and three-channel co-extrusion and three-section type ultraviolet curing are matched, so that inner layer under-crosslinking / outer layer over-crosslinking is avoided.
Owner:CHONGQING BOJIA CABLE CO LTD

Imidazole derivative curing agent and preparation method of space stiffening material with low volatility and high stability

The invention discloses an imidazole derivative curing agent and a preparation method of a space stiffening material with low volatility and high stability, and belongs to the field of preparation of space developing materials. The method comprises the following steps: mixing a light curing agent, an imidazole derivative curing agent, acrylate resin and epoxy resin, vacuumizing, removing bubbles, pouring into a standard dumbbell spline mold, carrying out ultraviolet irradiation for 10-20 minutes to prepare a flexible material of a first network, then pre-curing at 130-150 DEG C for 3-4 hours, and curing at 170-180 DEG C for 3-5 hours to obtain a rigid material. Through molecular synthesis scheme design, the high-molecular-weight imidazole derivative is prepared, the reaction activity is reduced, the storage life is prolonged, and the problems of small molecule migration and vacuum gas outlet are solved. Due to the molecular scheme design, more imidazole groups are introduced to a molecular chain and can be coordinated with metal ions to form ionic bonds, so that the reaction activity can be further reduced, the storage period can be prolonged, the molecular weight can be correspondingly increased, and the migration condition can be inhibited.
Owner:HARBIN INST OF TECH

Low-temperature-resistant polyurethane transfer film and preparation method thereof

The invention relates to the technical field of layered materials, and discloses a low-temperature-resistant polyurethane transfer film and a preparation method thereof. The multi-layer structure heat transfer film with a glue layer and a polyurethane-based transfer layer is prepared, and a photo-curing transfer layer material containing polyurethane acrylate containing polyether, polybutadiene blocks and organic silicon branched chains with good low-temperature resistance and sulfhydrylation graphene oxide with excellent far infrared performance is prepared; the low temperature resistance and the water resistance of the heat transfer film are effectively improved.
Owner:SUZHOU WONDERFUL NEW MATERIAL CO LTD

Ingredient mixing device for producing CIPP-ultraviolet curing repair material

The invention discloses an ingredient mixing device for CIPP-ultraviolet light curing repair material production, and particularly relates to the technical field of CIPP-ultraviolet light curing repair material.The ingredient mixing device comprises a shell, supporting frames are fixedly connected to the four corners of the lower end of the shell, and a stirring mechanism is arranged on the lower portion of the inner surface of the shell; the inner surfaces of the two circular cavities are jointly provided with a pretreatment assembly, and a premixing assembly is arranged above the stirring mechanism. According to the ingredient mixing device for production of the CIPP-ultraviolet curing repair material, the pretreatment assembly is arranged, a liquid resin material is subjected to layered swinging, scraping, runner conveying and converging mixing, and the problem that local aggregation or layered precipitation is prone to occurring due to viscosity and density differences caused by different types of liquid resin is solved; different types of liquid resins can firstly form independent thin layers, and then are gradually contacted and fused along a flowing path, so that full shearing and permeation among the liquid resins are realized, and the mixing uniformity of the liquid resins is improved.
Owner:HONGSHENGXIN NEW MATERIALS (HUBEI) CO LTD

Silicon-based aerogel composite material as well as preparation method and application thereof

The invention relates to the technical field of building, chemical engineering and energy heat preservation, and discloses a silicon-based aerogel composite material and a preparation method and application thereof. The invention relates to a light-emitting diode (LED) photo-curing agent, which is prepared from tetraethyl orthosilicate, methyltrimethoxysilane, allyltriethoxysilane, pentaerythritol tetra (3-mercaptopropionate), N-(3-(triethoxysilyl) propyl) furfuryl amine, N-(3-(triethoxysilyl) propyl) maleimide, a photoacid generator and a photoinitiator. The composite material has a three-dimensional porous silicon dioxide network skeleton and a polymer interpenetrating network, the three-dimensional porous silicon dioxide network skeleton is formed by copolymerization of tetraethyl orthosilicate and methyltrimethoxysilane, and the polymer interpenetrating network is formed by reaction of pentaerythritol tetra (3-mercaptopropionate) and allyltriethoxysilane. The preparation method comprises the steps of sol preparation, light curing, solvent replacement, surface hydrophobic modification and normal-pressure drying. The material shows excellent thermal insulation and mechanical properties in the fields of building heat insulation, pipeline heat preservation and cryogenic heat insulation.
Owner:江西宏柏新材料股份有限公司

LED-UV (Light Emitting Diode-Ultraviolet) curing ink as well as preparation method and application thereof

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.
Owner:NANXIONG YALTON CHEM CO LTD

Ultrasonic response anisotropic electrostatic spinning patch and preparation method thereof

The invention discloses an anisotropic electrostatic spinning patch with ultrasonic response and a preparation method thereof, a fiber membrane with a controllable anisotropic structure is constructed by a biodegradable polymer, antibacterial nanoparticles and a photoinitiator system through a step-by-step directional electrostatic spinning process, so that the mechanical matching property of the fiber membrane is improved; cell growth can be directionally guided and tissue regeneration can be accelerated by combining the piezoelectric material characteristics of the introduced biodegradable polymer with piezoelectric characteristics and electric field stimulation induced by the fiber topological structure; meanwhile, a zwitterionic coating is generated on the surface of the fiber membrane in situ by utilizing a single-sided photocuring technology, and an anti-adhesion function is realized on the single side of the fiber membrane. Furthermore, the soft tissue repair patch which has multiple functions of adjustable mechanical property, infection resistance, adhesion resistance and the like and has better structural mechanical suitability, function integration and tissue regeneration guiding capability is prepared by adopting the anisotropic electrostatic spinning patch with ultrasonic response.
Owner:EIGHTH AFFILIATED HOSPITAL SUN YAT SEN UNIV (SHENZHEN FUTIAN) +1

Solid-state battery and preparation method thereof, battery device, power utilization device and energy storage device

The invention provides a solid-state battery and a preparation method thereof, a battery device, a power utilization device and an energy storage device, the solid-state battery comprises a positive electrode, a negative electrode, an electrolyte and an interface layer, and the interface layer comprises the following components in percentage by mass: 50wt%-70wt% of light-cured resin, 10wt%-20wt% of an inorganic nano filler, 15wt%-25wt% of an ionic conductor material, 0.1 wt%-6wt% of an additive and 1wt%-2wt% of a photoinitiator; the additive comprises scandium salt and tin salt, and the molar ratio of the scandium salt to the tin salt is 1: (1.2-1.8); in the interface layer, the inorganic nanofiller is of a core-shell structure, the inorganic nanofiller comprises a plurality of ionic conductive ceramics parallel to one another and an iron-containing magnetic substance located on at least part of the surface of the ionic conductive ceramics, the ionic conductive ceramics are of a rod-shaped structure, and the included angle between the inorganic nanofiller and the surface where the negative electrode is located is 60-120 degrees.
Owner:ZHEJIANG JINKO ENERGY STORAGE CO LTD

Fabric capable of improving thermal protection performance as well as preparation method and application of fabric

The invention relates to the technical field of textile materials, and particularly discloses a fabric capable of improving thermal protection performance and a preparation method and application of the fabric. Nano-scale aluminum oxide; polyethylene glycol diacrylate; a closed type waterborne polyurethane emulsion; a silane coupling agent containing a vinyl group; a photochromic dye; a thermochromic dye; the preparation method comprises the following steps: S1, preparing composite slurry; s2, applying the composite slurry to the surface of a fabric base material in a dot matrix form by adopting a screen printing process to form a coating; s3, the coating is irradiated with ultraviolet light; and S4, carrying out baking treatment on the fabric subjected to the ultraviolet light curing treatment at the temperature of 140-160 DEG C. According to the invention, the polyethylene glycol diacrylate, the closed waterborne polyurethane and the vinyl-containing silane coupling agent are adopted to form an interpenetrating polymer network structure in situ, so that when the obtained fabric is rubbed or washed and the like, the coating is not easy to crack and peel off.
Owner:CHANGSHU BAOFENG SPECIAL FIBER

Photo-thermal dual-curing resin composition, preparation method and application thereof, and damping elastomer

The invention provides a photo-thermal dual-curing resin composition, a preparation method and application thereof and a damping elastomer, and relates to the technical field of elastic materials. The photo-thermal dual-curing resin composition is prepared from the following components in parts by weight: 45 to 65 parts of polyurethane acrylate oligomer, 4 to 8 parts of epoxy resin, 18.7 to 27.56 parts of diluting monomer, 1 to 1.4 parts of photoinitiator, 6 to 8.5 parts of curing agent and 2 to 2.4 parts of functional filler, wherein the polyurethane acrylate oligomer is prepared from the following components in parts by weight: 10 to 21 parts of soft oligomer, 20 to 30 parts of medium hard segment oligomer and 15 to 20 parts of hard oligomer. According to the resin composition, the damping performance of the material is remarkably improved, the photocuring forming efficiency and the thermocuring crosslinking depth are both considered, the whole system is smaller than or equal to 7500 mPa.s at the temperature of 20 DEG C, and the resin composition is suitable for the 3D printing process.
Owner:SUZHOU FLASHFORGE 3D TECHNOLOGY CO LTD +1

Protective layer coating method of stepped golden finger three-dimensional structure

The invention relates to a protective layer coating method of a stepped golden finger three-dimensional structure. The protective layer coating method comprises the following steps: step 1, surface activating treatment: performing plasma cleaning on the surface of a printed circuit board; step 2, coating a three-dimensional curved surface: adopting non-contact spraying equipment, coating a protective material in sections along the height change direction of the step structure of the golden finger, independently controlling the coating amount of each section, and forming an inclined angle between a dispensing head and the plate surface during coating; and step 3, step curing treatment: carrying out ultraviolet light curing on the coating area. The invention provides a method for coating a protective layer of a stepped golden finger three-dimensional structure. The core of the method is to solve the covering problem of a stepped region through segmented control and non-contact coating.
Owner:VICTORY GIANT TECH HUIZHOU CO LTD

Photocuring dental resin adhesive containing silane coupling agent modified monomer as well as preparation and application of photocuring dental resin adhesive

The invention relates to a light-cured dental resin adhesive containing a silane coupling agent modified monomer as well as preparation and application of the light-cured dental resin adhesive. The dental resin adhesive comprises a resin matrix, an organic polymer and a photoinitiator, wherein the resin matrix consists of methacrylate resin grafted and modified by a silane coupling agent and unmodified methacrylate resin. According to the method, the isocyano group of the silane coupling agent is selected to react with the hydroxyl group on the resin monomer to generate the silane modified grafted resin monomer, and the method is simple, low in equipment requirement and suitable for large-scale production; the obtained dental resin adhesive can be internally covalently cross-linked to enhance the self mechanical property, can also be chemically bonded with a bonding substrate by utilizing a grafted silane coupling agent to improve the interface bonding strength, is especially suitable for being used as an enamel bonding material, and can remarkably improve the service life and the curative effect of a bonded restoration.
Owner:BEIJING UNIV OF CHEM TECH +1

UV-tackifiable adhesive tape and preparation method therefor

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.
Owner:BYE POLYMER MATERIAL CO LTD

An integrated electrode plate, its preparation method and application

The application relates to the technical field of all-vanadium redox flow batteries, and discloses an integrated electrode plate and a preparation method and application thereof, which comprises the following steps: mixing and calcining a metal organic framework material and polyvinylpyrrolidone to obtain a porous carbon material; uniformly melting and mixing the porous carbon material, resin and conductive carbon material, and performing die forming to obtain a modified bipolar plate; using silver-coated copper powder as a conductive filler, and using epoxy modified acrylic resin as an organic carrier to prepare ultraviolet light curing silver-coated copper conductive adhesive; and bonding the electrode and the modified bipolar plate through ultraviolet light curing to prepare the integrated electrode plate. The porous carbon is obtained by using a polyvinylpyrrolidone-assisted limited carbonization method, the conductivity of the bipolar plate is improved, epoxy modified acrylic resin is used as the organic carrier, the silver-coated copper powder is uniformly distributed in the organic carrier, the conductivity of the conductive adhesive is improved, and the integrated electrode plate improves the performance of the flow battery.
Owner:HANGZHOU DEHAI AIKE ENERGY TECH CO LTD

Three-dimensional pattern card and method for manufacturing the same

Provided is a three-dimensional pattern card and a method of manufacturing the same. The method includes: (a) preparing a master mold in which a pattern of a three-dimensional shape is engraved on one surface; (b) fabricating a three-dimensional pattern module by forming a three-dimensional pattern on a surface of a transparent sheet made of a synthetic resin material using the master mold; (c) fabricating a rear card body module by sequentially laminating and bonding a first core sheet, an antenna inlay sheet, a second core sheet, and a rear protective sheet; (d) applying a UV adhesive to a surface of the first core sheet of the rear card body module; and (e) laminating the three-dimensional pattern module on the UV adhesive applied surface of the rear card body module and irradiating UV to cure the adhesive so as to bond the rear card body module and the three-dimensional pattern module.
Owner:BIOSMART CORPORATION

Organic-inorganic hybrid material for antifouling, preparation method, light-cured antifouling material and product

PendingCN121405948ACoatingsEpoxyPolymer science
The invention relates to the technical field of organic-inorganic hybrid materials, in particular to an antifouling organic-inorganic hybrid material, a preparation method, a photocuring antifouling material and a product. The organic-inorganic hybrid material is prepared by carrying out a ring-opening addition reaction on an epoxy group of epoxy polyhedral oligomeric silsesquioxane and polydimethylsiloxane with an amino group or perfluoropolyether with a carboxyl group. According to the scheme provided by the invention, the coating has high thermal stability and structural rigidity endowed by epoxy polyhedral oligomeric silsesquioxane and excellent low surface energy antifouling property endowed by amino-containing polydimethylsiloxane or carboxyl-containing perfluoropolyether, and the defect that a pure epoxy polyhedral oligomeric silsesquioxane coating does not have antifouling property is effectively overcome.
Owner:SHUNDE POLYTECHNIC

Methods for curing dental appliances

The present invention relates to methods for curing polymeric dental appliances comprised of partially cured photopolymerizable components, especially for additively manufactured denture base and artificial tooth components utilized in the production of full and partial dental prostheses. In particular, the invention relates to methods of utilizing a curing apparatus having one or more controllable heating sources and one or more controllable LED light sources to achieve specific preheating and light curing conditions for more effectively converting partially cured photopolymerizable components from a partially cured state to a final cured state.
Owner:DENTSPLY SIRONA INC

Transparent phosphorescence-containing cured flame-retardant coating as well as preparation method and application thereof

The invention relates to a transparent phosphorescence-containing cured flame-retardant coating as well as a preparation method and application thereof. The transparent phosphorescence-containing cured flame-retardant coating comprises the following components: phosphorus-containing polyurethane acrylate, polyurethane acrylate, a double-bond-containing polyurethane organosilicon prepolymer, a nitrogen-containing acrylic monomer, a phosphorus-based flame retardant A, a phosphorus-based flame retardant B, silica sol, a reactive diluent B, a silane coupling agent and other auxiliaries. The coating disclosed by the invention has adhesive force, flame retardance and weather resistance, and can be directly cured on a light flexible photovoltaic module panel and a back plate through UV to achieve transparent, fireproof, flame-retardant and weather-resistant effects.
Owner:SHANGHAI PINCHENG HLDG GRP CO LTD +1