47results about How to "Photosensitivity" patented technology

The invention discloses a method for continuously preparing fiber gratings on line. According to the method, coating and curing of a prefabricated bar high-temperature drawn bare fiber and a bare fiber protective layer are separated. By the method, adverse interaction between a wire drawing process and an on-line grating write-in and coating process is eliminated; the method is easy to control; and the operation of a system is stable. In addition, mutual constraint factors between the processes are eliminated, the two processes are respectively performed under optimal process conditions, and many technical problems of conventional dynamic on-line grating formation are well solved.

The invention relates to a preparation method for a nanometer composite supermolecular hydrogel with photosensitivity. The preparation method comprises the following steps: reducing chloroauric acid under the action of a reducing agent in a tetrahydrofuran solvent with mercaptopolyethylene glycol monomethyl ether or polyethylene glycol monomethyl ether thioctate as a stabilizing agent so as to form a polyethylene glycol monomethyl ether self-assembled single-layer protective gold nanocomposite particle in situ; then mixing a polyethylene glycol monomethyl ether self-assembled single-layer protective gold nanocomposite particle aqueous solution with a mass concentration of 3 to 20% and an (i)alpha( / i)-cyclodextrin aqueous solution with a mass concentration of 5 to 12%; and allowing (i)alpha( / i)-cyclodextrin and polyethylene glycol monomethyl ether on the surface of nano-gold to undergo assembling so as to obtain the nanometer composite supermolecular hydrogel with photosensitivity. The method is simple and easily practicable; the prepared gold nanocomposite particle has good water dispersibility and stability, and nano-gold is uniformly distributed in the composite supermolecular hydrogel. The nanometer composite supermolecular hydrogel prepared in the invention has shear thinning performance and photosensitivity and is expected to be used as a novel injection implant functional material in the field of biomedical engineering materials.

The invention provides a controllable-acid-value photosensitive alkali-soluble polyurethane acrylate resin and a photoresist composition thereof, belonging to the technical field of ultraviolet curing. Carboxylic dibasic alcohol reacts with an isocyanate compound to obtain a NCO-terminated prepolymer, and finally, termination is performed by a hydroxy acrylate monomer to obtain the polyurethane acrylate resin. By introducing the carboxylic group, the resin has alkali solubility; and by introducing the acrylate monomer, the resin has photosensitiveness. The method has the advantages of simple process and mild reaction conditions, and can control the molecular weight, acid value, double-bond equivalent weight and the like of the resin by changing the material proportion, thereby obtaining the resin applicable to the field of photoresists.

The invention discloses preparation and application of a material for tumor photothermic treatment, and belongs to the field of biological medicine. The material comprises GNR, a mesoporous SiO2 layer wrapping the outer layer of the GNR, DOX loaded into pores of mesoporous SiO2, alkylation hydroxymethyl coumarin blocking mesoporous SiO2, and target hyaluronic acid on the outermost layer. After functional groups of the outer layer of SiO2 are modified into carboxyl groups, medicine loading is conducted through electrostatic interaction; after medicine loading, coumarin with alkyl chains are introduced through chemical grafting, an oily molecular layer is formed, and medicine leakage is prevented; in the material, ester bonds formed by coumarin molecules and the carboxyl groups on the surface of a silicon shell have light sensitivity, and the light response type intelligent release of medicine can be achieved; finally, molecules with long circulation and target molecules capable of being specifically combined with cancer cells are assembled on the material, and long circulation and dosage targeted performance are provided for the material.

A photothermographic recording material comprising a photo-addressable thermally developable element coatable from aqueous media comprising a substantially light-insensitive organic silver salt, photosensitive silver halide in catalytic association with the substantially light-insensitive organic silver salt and a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder, characterized in that the binder comprises a water-soluble polymer, a water-dispersible polymer or a mixture of a water-soluble polymer and a water-dispersible polymer and particles of the photosensitive silver halide are non-aggregating in the photo-addressable thermally developable element and are uniformly distributed over and between particles of the substantially light-insensitive organic silver salt, at least 80% by number of the particles having a diameter, determined by transmission electron microscopy, of <=40 nm; and a recording process therefor.

The invention relates to a transparent photosensitive polyimide resin, a polyimide film and a preparation method of the polyimide resin. The polyimide resin has a structure as shown in a formula (I) or formula (II) shown in the specification. The polyimide resin and the film have photosensitivity, can change color under the irradiation of ultraviolet rays, have the characteristics of intuitive visual observation of light-induced modification area, are soluble, can be recycled, are colorless and transparent, have good flexibility, and can be used to prepare circuit boards for flexible electronic devices. The surface pattern of the film can be metalized, and metal in a plating layer on the film can be recovered.

The invention discloses a photosensitive polyimide resin, a polyimide photocuring coating and a preparation method thereof. The structure of the photosensitive polyimide resin is as follows: a main chain structure contains a large number of alicyclic and benzene ring structures, and photosensitive groups are introduced at the tail end of the polyimide resin through benzene ring and carboxyl structures, so that the photosensitive polyimide resin is enabled to have good heat resistance and light sensitivity; and the main chain structure contains fluorine functional groups, so that the solubility of polyimide is improved, and the transparency and hydrophobicity of a polyimide photocuring coating are improved. The polyimide photocuring coating prepared by adopting an ultraviolet curing technology has photosensitivity, high transparency and good heat resistance, the light transmittance of the polyimide photocuring coating can reach 90%, and the polyimide photocuring coating can be widely applied to the fields of space flight and aviation, automobile industry and microelectronics.

The invention provides a heat-resistant insulating paint with fast curing speed. The heat-resistant insulating paint comprises the following ingredients in parts by weight: 30-40 parts of epoxy acrylate, 30-50 parts of activated diluent, 1-10 parts of photoinitiator, 5-15 parts of talcum powder, 1-10 parts of mica powder, 0.1-0.3 parts of defoaming agent, 0.1-0.5 parts of levelling agent, 0.01-2 parts of wetting dispersing agent, and the balance of pigment, wherein the mass ratio of epoxy resin to acrylic acid in the epoxy acrylate is 2:1, and the activated diluent is triuret propylene glycol diacrylate. The heat-resistant insulating paint with fast curing speed has the advantages of being fast to cure, and good in impact resistance and flexibility and other mechanical properties, the paint is good in insulation and heat resistance, as well as green and environmentally-friendly, thus being a heat-resistant insulating paint which is wide in application range and suitable for use in large-scale production.

The invention discloses a photosensitive amphiphilic copolymer containing thymine. The photosensitive amphiphilic copolymer P(St / VBT-co-MA) is prepared from 1-(4-vinylbenzyl)thymine (VBT), styrene, maleic anhydride, azodiisobutyronitrile (AIBN) and tetrahydrofuran through a reaction in an oil bath with a temperature of 60 to 70 DEG C for 20 to 24 h and repeated purification with toluene after completion of the reaction, wherein 1-(4-vinylbenzyl)thymine (VBT), styrene and maleic anhydride are used as copolymerization monomer, azodiisobutyronitrile (AIBN) is used as an initiator and tetrahydrofuran is used as a solvent. A micelle can be prepared from the copolymer through self-assembly. The copolymer simultaneously contains a hydrophilic chain segment and a hydrophobic chain segment and can form the micelle in deionized water throughy; a thymine group on the hydrophobic chain segment can undergo photocrosslinking, which enables the copolymer to have photosensitivity; and the self-assembled micelle has good dispersibility, a controllable particle size and photosensitivity and can be used for a sensing coating.

The invention discloses a fog prevention method for a silver chlorobromide film, comprising the following steps: a silver chlorobromide emulsion prepared by a computer-controllable double-jet method, the emulsification temperature is 54 DEG C, and the emulsification process lasts for 30min to prepare the emulsion; a 1-phenyl-5-tetrazole-thione solution prepared with alcohol at two thousandth is added into the above glue solution, and standing is performed for 5min; spectral sensitization of sulfur and gold is carried out, a surfactant and a stabilizer coating addition are added, a 1-phenyl-5-tetrazole-thione solution prepared with alcohol at two thousandth is continuously added into the above coating addition, and constant temperature lasts for 0-22h. During maturation process of the emulsion, a certain amount of PMT is added so as to obviously reduce fog of the emulsion.

The invention discloses a display panel. The display panel comprises a substrate; a driving switch is formed on the substrate; a color resistance layer is formed on the driving switch; the color resistance layer is covered with a transparent light resistance layer, and the transparent light resistance layer comprises a protective layer and a spacing unit. Because the transparent light resistance layer has an effective insulating property, the manufacturing procedure that the protective layer needs to be arranged on the color resistance layer in the process of color film array substrate products can be effectively replaced, the manufacturing procedures of the display panel can be effectively optimized and reduced, and the production cost of the display panel can be reduced.

The invention discloses a display module, an application method thereof and a display device. The display module comprises a first display area, a second display area, a display panel and a backlightmodule, wherein the backlight module comprises a first through hole and a first supporting part at least partially located in the first through hole. The display module also comprises a photosensitiveelement which comprises a driving mechanism; a light supplementing module which comprises a light supplementing source and a flexible circuit board; and a connecting part which is connected with thephotosensitive element and the light supplementing module. The first display area comprises a display stage and a photosensitive stage, in the display stage, orthographic projections of the light supplementing module and the photosensitive element on the display panel are at least partially overlapped, and at the moment, light emitted by the light supplementing source supplements light to the first display area, so that the first display area can realize a display function, and the design of a full screen is realized; in the light sensing stage, the orthographic projections of the light supplementing module and the light sensing element on the display panel are not overlapped, so that the light supplementing module does not influence the light sensing performance of the light sensing element, and the light sensing performance of the light sensing element is improved.

The invention discloses a sulfonic acid tetraphenyl porphyrin nano-fluorescent material and a preparation method thereof, which relate to a fluorescent porphyrin material and a preparation method thereof. The sectional shape of the material is of a rectangular sheet or strip or sheet and strip. The method comprises the following steps: preparing a TPRS alcohol solution first, preparing a TPPS nano-fluorescent material dispersion system, and obtaining a product through separation and drying. The material has smaller size and better photosensitivity, has good characteristics of a porphyrin monomer such as rigidity and flexibility, electronic buffer capacity, photosensitivity, high chemical stability, wide spectral response, and also has special properties after the nanometer treatment such as small-size effect, surface effect, quantum effect, interfacial effect. The method is simple, has low production cost, and is convenient for promotion and application. The material prepared by adopting the method can be widely used as markers, photosensitive materials as well as sensitive recognition elements and materials for constructing photoelectric devices, molecular devices and sensors.

The invention provides bio-based photo-curable polyurethane and a photoresist composition from the same and belongs to the field of photoresists. The photoresist composition is prepared by: reacting bio-based monomer isosorbide with a diisocyanate to obtain NCO-terminated monomer, reacting this monomer with dihydroxy acid to synthesize polyurethane prepolymer, terminating with acrylate monohydric alcohol to obtain bio-based photo-curable polyurethane, mixing the prepared polyurethane proportionally with a photoinitiator, a solvent, an active diluent and a pigment in the shade, and stirring well to enable full dissolution. By introducing the isosorbide, it is possible to improve corrosion resistance of the photoresist and improve its thermal performance and it is possible to produce an image with good comprehensive performance and high resolution.

The invention relates to the technical field of electric transmission lines, and discloses an electric transmission line grounding down lead suitable for rapid on-site anticorrosion treatment. According to the present invention, a protection material and an outer sheath are sequentially arranged on the surface of the electric transmission line grounding down lead, wherein the protection material comprises, by mass, 70-80 parts of ceramic micro-powder, 20-30 parts of zinc powder, 10-20 parts of shell micro-powder, 20-30 parts of 3,4-epoxycyclohexylformic acid-3',4'-epoxycyclohexanecarboxylate,6-10 parts of bis[2-(methacryloxy)ethoxy]dimethylsilane, 3-5 parts of triarylsulfonium hexafluoroantimonate salt, 6-10 parts of hyper-branched polyether polyol, 4-6 parts of polyethylene glycol, 1-3 parts of p-phenylenediamine, 1-3 parts of a defoamer, 1-3 parts of a dispersant, and 30-50 parts of ethanol; and the electric transmission line grounding down lead can effectively reduce the corrosionrate of the grounding down lead and greatly prolong the service life, can perform on-site anticorrosion treatment, and is fast and efficient.

The invention relates to lithium-aluminum silicon-series glass material allowing photolithography, and a preparation method and an application thereof. The lithium-aluminum silicon-series glass material includes, by weight, 72-76% of SiO2, 10-15% of Li2O, 3-4% of K2O, 6-8% of Al2O3, 2-3% of Na2O, 1-1.2% of ZnO, 0.8-1.5% of Sb2O3, 0.04-0.08% of Ce2O3, and 0.04-0.08% of Ag2O. The silicon-series glass material has simple and definite material composition and simple production process, and has the equal photosensitiveness as the similar glass products.

The invention discloses a fluorocarbon coating for an aluminum curtain wall plate and a spraying process of the fluorocarbon coating. The fluorocarbon coating is prepared from the following raw materials in parts by weight: 10-30 parts of modified fluorocarbon resin, 0.3-1 part of a wetting dispersant, 0.1-0.5 part of a defoaming agent, 0.5-1 part of a thickening agent, 8-12 parts of titanium dioxide, 10-20 parts of an active diluent, 0.1-0.5 part of nano composite particles and 0.01-0.1 part of a photocuring agent. According to the invention, chlorotrifluoroethylene is modified by polyurethane, such that modified fluorocarbon resin is obtained. The photosensitivity of the fluorocarbon resin is improved; the wear resistance, the adhesion and the water resistance are improved; the added photosensitivity enables the fluorocarbon coating to be subjected to free radical polymerization through the photocuring agent, so that the curing time of the coating is shorter, and the nano composite particles formed by compounding nano TiO2 and ZnO nanorods are added into the formula of the coating, so that the absorption frequency band of the coating to ultraviolet rays is widened, and the ultraviolet resistance of the coating is improved.

The invention discloses a potted landscape light which comprises a base. A drawer for holding tools is arranged on the base. A flexible plate, which can surround a potted landscape, is arranged at the top end of the base. Buckles, which can be connected with each other, are arranged at the two ends of the flexible plate. A lighting circuit is arranged on the base, and comprises bulbs, a bidirectional thyristor, a time base integrated circuit, photo resistors, a relay and a power line connected with an AC source provided by a mains supply. The bulbs and the bidirectional thyristor are connected in series between the positive electrode and the negative electrode of a power source. The control electrode of the bidirectional thyristor is connected with the output end of the time base integrated circuit. The input ends of the time base integrated circuit are connected with the photo resistors. The relay is connected between the bidirectional thyristor and the bulbs. An electromagnet connected with a normally closed contact of the relay is arranged on the base. Iron blocks attracted by the electromagnet are arranged at the corresponding positions of the drawer. The bulbs are arranged on the flexible plate. The potted landscape light has the functions of lighting automatically and providing self-protection tools.

The invention belongs to the technical field of marine organism natural products and particularly relates to a method for preparing sargassum horneri powder and extracting fucoxanthin from sargassum horneri. The method includes steps: preparing sargassum horneri powder by cleaning, drying in the shade, drying, powdering, sterilizing and the like; adding extract liquid and steel balls into the sargassum horneri powder, performing oscillatory extraction for 3-10 minutes under weak-light, low-temperature and oxygen-free conditions, centrifuging to obtain supernatant, and subjecting the supernatant to high performance liquid chromatography and vacuum freeze drying to obtain a pure fucoxanthin product. The method has advantages of high efficiency, simplicity, low cost and the like, provides basis for biological resource comprehensive utilization of sargassum horneri and has a potential significant economic value.

The invention discloses an additive and a photoresist composition containing the additive, the additive is a pyrazoline compound and a five-membered heterocyclic compound composed of two connected nitrogen atoms and three carbon atoms, the additive has a double bond, the structure contains lone pair electrons, the lone pair electrons and metal atoms can form covalent bonds, and the metal atoms can form metal atoms. The pyrazoline compound is a very important organic heterocyclic compound; the photoresist composition disclosed by the invention comprises the linear phenolic resin, the photosensitizer, the solvent, the sensitizer, the flatting agent and the additive, and the additive can be adsorbed on the surface of metal to form a compact protective film, so that the corrosion of the metal is inhibited, the occurrence of side surface corrosion in the developing process is reduced, and the corrosion resistance of the photoresist is effectively improved.

The invention discloses an LED (Light-emitting Diode) street lamp cover, which comprises an inner cover shell and an outer cover shell. The outer cover shell is nested on an outer wall of the inner cover shell; a plurality of heat radiation holes are formed in the top part of the outer cover shell; a plurality of support bars are arranged on a side wall of the outer cover shell; the side wall of the outer cover shell comprises a connecting part and a main body part; a step is arranged at a connected part of the connecting part and the main body part; a connecting structure and a plurality of buckling mechanisms are arranged on the connecting part; a light transmitting port is formed in the main body part; and a light transmitting plate is arranged on the inner cover shell. According to theLED street lamp cover provided by the invention, the outer cover shell is additionally arranged outside the inner cover shell, and the outer cover shell is locked and matched with the inner cover shell, so that the service life of the lamp cover is prolonged; a heat radiation effect of the heat radiation holes in the top part of the outer cover shell is good, and the support bars on the side wallof the outer cover shell are matched with the outer wall of the inner cover shell, so that a heat radiation gap between the outer cover shell and the inner cover shell is increased; and through the interaction of the light transmitting plate and the light transmitting port, an internal light controller is more sensitive to sense light and better controls a street lamp to switch on and switch off,so that the resources are saved.

The invention discloses ultraviolet light cured water-based gravure ink that is prepared from the following raw materials in percentage by mass: 5%-8% of a binder, 3%-6% of a photosensitizer, 8%-11% of pigment, 2%-4% of industrial ethanol, 4%-10% of an additive, 1%-2% of sodium nitrate and the balance of deionized water, and the sum of the mass percentages of the raw materials is 100%. The invention further discloses a preparation method of the ultraviolet light cured water-based gravure ink, and the problems that in the prior art, the water-based gravure ink is large in viscosity, low in mobility, low in adhesion fastness, poor in stability, low in drying rate and high in cost are solved.

The invention relates to a traditional Chinese medicine composition for treating insomnia. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 1-5 parts of coptis chinensis, 7-11 parts of fructus psoraleae, 7-11 parts of folium artemisiae argyi, 1-5 parts of safflower, 14-21 parts of fleshfingered citron flower, 7-11 parts of folium mori, 1-5 parts of cinnamon, 7-11 parts of cardamom, 7-11 parts of rose, 7-11 parts of radix angelicae and 7-11 parts of mint. The invention further provides application of the traditional Chinese medicine composition. The compress bag has the curative effect of hot compress, the traditional Chinese medicine composition serves as a pillow to be cushioned under the neck of a patient, medicine fragrance emitted by the traditional Chinese medicine composition helps the patient to relax and fall asleep, and the compress bag is suitable for symptoms such as insomnia and dreaminess, restless mood, dizziness, weakness and tiredness, cold hands and feet, cold shape and cold limbs and the like.

The invention provides chalcone-terminated photosensitive waterborne polyurethane, a preparation method thereof and a waterborne polyurethane / epoxy acrylate cured film prepared from the chalcone-terminated photosensitive waterborne polyurethane, the photosensitive waterborne polyurethane is prepared from raw materials including polyisocyanate, oligomer polyol and chalcone, the polyurethane is subjected to end capping treatment through the chalcone, and the curing effect of the chalcone is improved. A photosensitive group is added into polyurethane through a covalent bond, so that the polyurethane is endowed with excellent photocuring performance, has photosensitivity under the irradiation of ultraviolet light and visible light, can be cured under the condition that a photoinitiator does not need to be added, and meanwhile, has good photocuring performance. A waterborne polyurethane / epoxy acrylate cured film prepared by taking the photosensitive waterborne polyurethane as a raw material is good in thermal stability, high in adhesive force and impact strength and good in application prospect.

The invention relates to a random copolymer polystyrene-co-poly-methacryloyl ethyl cinnamate (PS-co-PCEMA) with photosensitivity and a preparation method of a honeycomb ordered porous film. The honeycomb ordered porous film disclosed by the invention has the characteristics that the method is simple in preparation technology, and good in porous film ordering property, and the prepared honeycomb ordered porous film has photosensitivity.