1926 results about "Light cure" patented technology

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.

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.

The invention provides a gradient crosslinking process of photosensitive resin for photocuring 3D printing, and relates to the technical field of photocuring 3D printing materials. The gradient crosslinking process of the photosensitive resin for photocuring 3D printing comprises the following steps: S1, based on double-initiator system design, adopting molecular dynamics simulation screening, respectively adding a 405nm sensitive type TPO-L initiator and a 365nm sensitive type I TX initiator into an epoxy acrylate prepolymer, and verifying initiation energy barrier matching through quantum chemistry calculation, and generating a pre-initiation gradient resin formula. Through molecular dynamics simulation, initiator combinations are screened, energy barrier matching is verified, the ratio of dual-wavelength sensitive initiators is optimized, and accurate triggering of surface layer and deep layer cross-linking reaction is ensured. And a three-roller grinding and dispersing process is combined with ultrasonic oscillation to eliminate nanoparticle aggregation, so that the mechanical uniformity and light scattering effect of a resin system are improved.

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.

The invention relates to the technical field of optical protective materials, in particular to an anti-dazzle full-ultraviolet-proof optical protective material and a preparation method thereof.The anti-dazzle full-ultraviolet-proof optical protective material is formed by sequentially compounding a scratch-resistant hardened layer, a PET film layer a, a composite adhesive layer, a PET film layer b, an installation adhesive layer and a PET release film layer from top to bottom; the preparation method comprises the following steps: mixing organic silicon modified polyurethane acrylate, a pigment, a reactive diluent, a flatting agent, a photoinitiator, a solvent and modified nano silicon dioxide to prepare a photocurable scratch-resistant hardening coating liquid; in order to endow the optical material with excellent infrared barrier property and heat insulation property, cesium tungsten bronze is introduced into a composite adhesive layer as a filler, and in order to improve the adhesive power and water resistance of a composite adhesive solution, epoxy resin is taken as a base material, organic silicon modified polyurethane acrylate is introduced as a water-resistant component, acrylic acid is taken as tackifying resin, and a curing agent is taken as a curing agent. And bisphenol A ethoxylate dimethacrylate is used as a diluent.

The embodiment of the invention provides a UV (ultraviolet) thermal dual-curing adhesive and a preparation method thereof. The UV thermal dual-curing adhesive comprises the following components in percentage by mass: 30-55% of a photocuring prepolymer; 5%-25% of an active diluent monomer; 1%-10% of a photoinitiator; 1%-20% of a thermal initiator; 10%-40% of a filler; 0.5%-5% of a coupling agent; 1%-10% of a thixotropic agent; 1%-10% of pigment; 2%-8% of an auxiliary agent; wherein the photocuring prepolymer comprises epoxy resin. According to the UV thermal dual-curing adhesive and the preparation method thereof provided by the embodiment of the invention, the dual-curing adhesive with low shrinkage and low thermal expansion coefficient is obtained by optimizing the structure of the photocuring prepolymer and matching the components, and the prepared adhesive can be rapidly cured under the irradiation of LED 365nm ultraviolet light, or can be thermally cured under the low-temperature condition of 80 DEG C, so that the UV thermal dual-curing adhesive can be widely applied to the field of ultraviolet curing. The product can resist high and low temperature cycle impact of-50 DEG C to 140 DEG C, and has a good application prospect.

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.

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.

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.

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.

The invention relates to the technical field of protective films, and particularly discloses a composite glass protective paste for a flexible folding screen and a preparation method of the composite glass protective paste. The composite glass protection paste for the flexible folding screen sequentially comprises a functional base film, a first thermosetting polymer film, a UTG ultrathin glass layer, a second thermosetting polymer film and an OCA adhesive layer from top to bottom, the preparation method of the OCA adhesive layer comprises the following steps: carrying out activating treatment on nano silicon dioxide particles to obtain modified particles with cations on the surfaces; carrying out reaction on the modified particles and molten hydroxy acrylic resin under the ultrasonic action, and carrying out extrusion granulation to obtain elastic acrylic master batches; uniformly mixing the elastic acrylic master batch with a cross-linking agent and a photoinitiator to obtain the acrylic OCA; and coating OCA on one surface of the release film, and performing ultraviolet curing to obtain an OCA layer. According to the composite glass protection paste for the flexible folding screen, the bending resistance of the protection paste is improved.

The invention provides a bio-based light-cured heat-conducting and insulating composite material, a preparation method and application, and relates to the technical field of radiation curing, and the bio-based light-cured heat-conducting and insulating composite material comprises a bio-based oligomer, a reactive diluent, a modified heat-conducting filler, a free radical photoinitiator and an organic silicon defoaming agent. The bio-based oligomer is selected as a main component of the photocuring coating, and compared with a coating prepared from petroleum-based acrylic resin in the prior art, the coating has the green and environment-friendly functions, and meanwhile, the harm to the environment caused by exploitation and processing of petrochemical products can be reduced.

The invention relates to alkali-soluble light-cured resin and a preparation method thereof, a light-cured resin composition, a photosensitive dry film and a semiconductor device. The structural formula of the alkali-soluble light-cured resin is shown as a formula (I) or a formula (II), wherein in the formula (I), R1 is selected from one of a single bond, an oxygen atom, a sulfonyl group and an organic group with 1-30 carbon atoms; in the formula (I) and the formula (II), n is a natural number greater than or equal to 0; r2 is selected from organic groups with 1-50 carbon atoms; r3 is selected from an aromatic organic group or an aliphatic organic group; r4 is selected from organic groups containing unsaturated carbon-carbon double bonds; and R5 is selected from carboxyl-containing organic groups. A molecular chain of the alkali-soluble light-cured resin contains a photosensitive group, an imide structure and an alkali-soluble group, on one hand, the thermal mechanical property of the alkali-soluble light-cured resin can be enhanced, and on the other hand, the alkali-soluble light-cured resin can form a uniform and stable resin glue solution in a solvent, so that the comprehensive performance of the alkali-soluble light-cured resin is improved.

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.

The invention discloses an energetic slurry toughening and photocuring 3D printing method, relates to a preparation method of energetic slurry, and aims to solve the problems that an existing energetic material is poor in mechanical property, poor in toughness and easy to crack; the particles are fast to settle in the light-cured resin, the stability is poor, and the printing precision is poor. The invention develops a photocuring high-energy resin for photopolymerization additive manufacturing. The composition contains a high-energy filler, an acrylate adhesive, whiskers and an inert plasticizer. The material has the characteristics of compatibility, printability and mechanical property, and the possibility of printing increasingly complicated high-energy articles is proved through experiments. The preparation method of the light-cured resin comprises the following steps: adding the low polymer bisphenol A epoxy acrylate and the six-functionality polyurethane acrylate; diluting monomers including 1, 6-hexanediol diacrylate and trimethylolpropane triacrylate; uniformly mixing an auxiliary agent, a thickening agent and a dispersing agent, and magnetically stirring for 30 minutes to obtain the light-cured resin. A preparation method of the energetic slurry comprises the following steps: mixing light-cured resin, whiskers, an inert plasticizer, energetic particles, a photoinitiator and a light absorber, and uniformly stirring to obtain the energetic slurry; after the energetic slurry is used for 3D printing, a sample piece is obtained, the yield reaches 95%-100%, the cost is low, preparation is easy, and the method can be applied to the field of energetic slurry 3D printing.

The invention relates to the technical field of surface coating, in particular to a self-adaptive semi-cured interface superposition spraying control method which comprises the following steps: S1, generating spraying path parameters according to the surface curvature of a workpiece and the distance between adjacent stations; s2, workpiece offset data are obtained in real time through a visual positioning system, three-dimensional coordinate compensation data are generated based on an image matching algorithm, and when the offset exceeds a preset threshold value, real-time re-planning of a spraying path is triggered; s3, multiple groups of nozzles are controlled to execute in an alternate spraying mode: after a first layer of material is sprayed at the first station, irradiation is performed for 0.5-2 s by adopting 50-100 mW / cm < 2 > UV intensity, and a semi-cured layer with the light curing rate of 70%-85% and the thickness of 5-20 microns is formed; s4, after the conveying belt moves to a second station, a first layer of material is sprayed on the second station and partially cured, a second layer of material is sprayed on the first station, and the light curing rate is larger than or equal to 95%; s5, the steps S3-S4 are cycled to complete multi-layer spraying; and S6, dynamically adjusting the doping proportion of the nano conductive particles in the spraying material according to the environment humidity.

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.

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.

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.

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

The invention 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.

The invention relates to a method for preparing a grid line of a battery piece, which is characterized in that a layer of polymer solution capable of flowing and extending is coated on a mold, and the surface of the mold is provided with a convex structure completely corresponding to a pattern of the grid line of the battery piece. After the polymer solution is cured, a coating with a groove structure is formed, and the grooves are filled with conductive paste. And then, transferring the polymer coating coated with the conductive slurry to the upper surface and the lower surface of the battery piece by adopting a transfer printing technology, and realizing accurate transfer printing of the grid line by accurately regulating and controlling transfer printing parameters. A photocuring technology can be introduced in the transfer printing process, and the conductive slurry is rapidly cured through ultraviolet irradiation. A high-precision mold is adopted to ensure the precision of the size and the shape of the grid line, the functional requirements of different grid line areas are met through formula adjustment and a step-by-step coating technology, the traditional preparation process is simplified, the production efficiency is improved, the production cost is reduced, the electrode structure is optimized, and the production cost is reduced. And the current collection efficiency and the overall performance of the photovoltaic cell are improved.

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.

Disclosed in the present application are a 3D printing photo-curable resin and a preparation therefor. The preparation method comprises: under the constant-temperature and constant-humidity conditions of a preset temperature and a preset humidity, weighing 50-80 parts of an acrylate oligomer, 10-40 parts of a reactive diluent, 0.05-0.1 parts of an ultraviolet light absorber, and 0.01-0.05 parts of p-hydroxyanisole, adding the weighed substances into a container, and stirring the materials in the container at a first preset rotation speed; and after stirring for a first preset time, adding the weighed 5-10 parts of a cross-linking agent and 1-3 parts of a photoinitiator into the container while stirring, and stirring same for a second preset time at a second preset rotation speed under dark conditions, so as to obtain the 3D printing photo-curable resin. In this way, the resin has an extremely high strength and toughness, without a filler being added, and can avoid the problems of unstable material performance and poor printing precision.

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.

The invention discloses a SiC power module sintering packaging method, and relates to the technical field of power module packaging, and the method comprises the steps: sequentially carrying out the ultrasonic cleaning, plasma activation and drying of a SiC chip and a ceramic substrate, and obtaining an activated ceramic substrate and a SiC chip; the surfaces of the activated ceramic substrate and the SiC chip are spin-coated with nano-silver paste, and a nano-porous silver layer is formed through pre-curing and low-temperature sintering; aligning the graphene / nano-porous silver composite layer chip with the ceramic substrate, performing segmented pressure sintering in a vacuum sintering furnace, and outputting a SiC power module; the SiC power module is subjected to epoxy resin packaging glue coating, ultraviolet light curing and annealing treatment, internal stress is eliminated, and the corrosion resistance is enhanced; and screening a SiC power module, performing XRD and SEM detection, coating a high-temperature-resistant silica gel sealing layer, performing curing, and outputting a finished product. Through the epoxy resin packaging adhesive coating and thermal-acoustic combined annealing technology, the residual stress of the packaging interface is released, the service life of the SiC power module is prolonged, and the adaptability of the SiC power module is improved.

The invention relates to the field of optical devices, in particular to a manufacturing method of a multi-dimensional close packing optical fiber array, an optical fiber array device and an optical transmission assembly. According to the scheme, a preset number of same-specification optical fibers are selected; then, arranging the optical fibers layer by layer, and temporarily fixing the optical fibers in each layer at the middle position, far away from the end part by a specified length, of the optical fibers by adopting an adhesive tape; completely immersing the free end of each optical fiber into a solvent with strong volatilization and high surface tension, gradually pulling out and horizontally placing; thirdly, after the solvent is completely evaporated and all layers of optical fibers are gathered together, a specified amount of UV light curing adhesive is dropwise added to the outer portions of the optical fibers in the optical fiber arrangement area according to the preset width and cured; and finally, tearing off the adhesive tape and carrying out optical grinding and polishing on the end part of the cured and formed optical fiber to obtain the required multi-dimensional optical fiber array. According to the invention, the problems of high process difficulty and high cost of manufacturing the optical fiber array by a traditional V-shaped groove method are solved.

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.

The invention belongs to the technical field of energy storage system device materials, and particularly relates to a modified silk amino acid-based gel electrolyte as well as a preparation method and application thereof. The method comprises the following steps: S1, uniformly mixing and stirring 15 to 30g of acrylamide, 50 to 60g of zinc sulfate heptahydrate, 0.1 to 1g of silk amino acid and 100g of water; adding 5mL to 10mL of ethanol, and uniformly shaking; then sequentially adding a proper amount of N-N methylene bisacrylamide and a photoinitiator, and continuously stirring until the solution is clear to obtain an electrolyte; s2, dropwise adding the prepared electrolyte into a polytetrafluoroethylene (PTFE) plate, and covering the polyurethane fiber membranes obtained by electrostatic spinning on the two sides; and carrying out light curing under ultraviolet irradiation to obtain the modified silk amino acid (M-SAA) gel electrolyte. According to the invention, silk amino acid (SAA) is introduced to construct a compact protective film with a beta folding structure, so that zinc dendrite growth and side reaction are inhibited, and the stability of the zinc negative electrode of the battery and the cycle performance of the battery are improved.