36 results about "Afterglow" patented technology

The application discloses a passive dual-mode tactile sensor and a preparation method thereof, and belongs to the technical field of optical sensing and flexible tactile sensing. The sensor comprises a flexible support substrate, an elastic composite film containing long-afterglow light-emitting particles, micro-nano optical fibers embedded or attached to the surface of the elastic composite film, a flexible packaging layer, and an optical signal detection unit. When an external target approaches, the target surface reflects the scattered light, changes the output light intensity of the micro-nano optical fiber, and realizes non-contact sensing. When the external target contacts or presses, the composite film produces stress-induced luminescence enhancement and interface coupling change under the action of stress, and realizes contact force tactile sensing. The preparation method comprises light-emitting composite layer forming, micro-nano optical fiber taper preparation, interface coupling integration and packaging curing. The application has the advantages of no need for continuous light supply, compact structure, anti-electromagnetic interference, easy flexible integration, and suitability for human-computer interaction application.

Miniature lighting device characterized in that it consists of one or more elements made entirely or partially of phosphorescent material, wherein these elements absorb energy during exposure to natural or artificial light and release it again in the dark in the form of visible afterglow.

The present invention provides: a scintillator which is reduced in the intensity of the afterglow, while having increased luminous intensity; and a charged particle radiation apparatus. A scintillator according to the present invention is characterized in that: a base material, a buffer layer, a light emitting part and a first conductive layer are sequentially stacked in this order; the light emitting part contains one or more elements that are selected from the group consisting of Ga, Zn, In, Al, Cd, Mg, Ca and Sr; and a second conductive layer is provided between the base material and the light emitting part.

The application relates to long-afterglow light-emitting concrete and a preparation method thereof, and belongs to the technical field of building engineering materials. The long-afterglow light-emitting concrete is prepared from the following components: cementitious material 420-485 parts by weight, water reducing agent 8-10 parts by weight, long-afterglow light-emitting material 5-10 parts by weight, admixture 5-7.5 parts by weight, and water 50-80 parts by weight. The long-afterglow light-emitting material is combined with high-performance concrete, the light penetration and excellent light-emitting performance of the long-afterglow light-emitting material are utilized, and high-performance long-afterglow light-emitting concrete with high strength and long afterglow time is obtained, which can be used in the fields of emergency passage indication, weak light illumination, building decoration and art crafts.

The invention provides a reflective and noctilucent integrated composite PVC (polyvinyl chloride) material and a preparation method thereof. The composite PVC material is composed of a PVC base material layer and a composite functional layer, the preparation raw materials of the PVC base material layer comprise the following components in parts by weight: 80-120 parts of polyvinyl chloride resin, 40-60 parts of a plasticizer and 2-10 parts of a stabilizer; the composite functional layer is prepared from the following components in parts by weight: 20-40 parts of composite reflective powder, 10-30 parts of long afterglow noctilucent powder, 2-10 parts of a dispersing agent, 40-60 parts of polyvinyl chloride resin, 20-40 parts of a plasticizer and 15-35 parts of a solvent. The prepared composite PVC material has high visible light reflectivity, is good in light reflection effectiveness, high in ageing resistance and weather resistance and long in afterglow time, is high in light energy storage capacity and high in continuous luminous efficiency at night, and can further enhance the reliability and safety of the material in practical application.

The invention discloses a biomass-based multi-light-source excited X-ray response type long-afterglow phosphorescent material as well as a preparation method and application thereof, and belongs to the technical field of functional materials. According to the invention, a novel long-afterglow luminescent material is synthesized by using natural ellagic acid, boric acid, urea and the like as raw materials by using a microwave-assisted strategy. The long-afterglow luminescent material disclosed by the invention shows excellent multi-mode excitation responsiveness, can generate long-afterglow luminescence through irradiation of ultraviolet rays, natural sunlight and X rays, can emit afterglow as long as several hours under the ultraviolet rays and the sunlight, and can still generate luminescence under the irradiation of the X rays under the detection limit as low as 192.2 mu Gy s <-1 >; the method has the potential of anti-counterfeiting and X-ray imaging application.

The invention relates to the technical field of landscape building materials, in particular to a landscape concrete building block with energy storage and light emitting functions, which comprises a base structure layer and a light emitting functional layer, the light emitting functional layer is a surface layer with the thickness of 3-5mm and contains a pretreated long-afterglow light emitting material; the base layer and the light-emitting functional layer are formed in a layered pouring composite mode. The long-afterglow luminescent material is aluminate fluorescent powder of which the surface is subjected to organic-inorganic hybrid coating treatment, and the coating treatment of the long-afterglow luminescent material comprises the following steps: forming a nano SiO inorganic coating layer on the surface of the luminescent powder by adopting a sol-gel method, and the thickness of the coating layer is 10-20nm; the preparation method comprises the following steps: carrying out organic modification on nano SiO coated luminescent powder by adopting a silane coupling agent to form an organic-inorganic hybrid coating layer; the landscape building material provided by the invention has the energy storage and light emitting capabilities and does not need electricity, and the problems that a traditional landscape product is poor in visibility at night, the cost of installing lighting facilities is high, and an existing light emitting material is insufficient in durability are solved.

The invention discloses an afterglow scintillator material for X-ray delayed imaging, which is prepared by a high-temperature solid phase method: NaCa3Y1-x (PO4) 3F: xTb < 3 +, 0lt; x is less than or equal to 9%. The afterglow scintillator material can realize high-resolution X-ray afterglow imaging and stable low-dose detection limit, and can perform flat-plate-free X-ray imaging on an electronic object.

The invention belongs to the technical field of marine fishery equipment and fishery engineering, and discloses a liftable wave-avoiding artificial fish collecting device and a self-luminous fish luring method of the liftable wave-avoiding artificial fish collecting device. The upper self-luminous bionic lotus leaf can actively sink to the preset safe water depth from the surface layer when wind waves are enhanced, and the stable wave avoiding state is kept when needed; a strong stormy wave acting area on the surface layer is effectively avoided, and the environment adaptability and survival ability under the complex sea condition are remarkably improved; the self-luminous bionic lotus leaf is prepared from an organic long-afterglow luminescent material, after being excited by natural light or artificial light, the self-luminous bionic lotus leaf can continuously emit blue light, blue-green light or green light signals under the condition of no external power supply, and continuous trapping of phototactic fishes is achieved at night or in a weak light environment; a complex power supply system and a watertight electrical structure are omitted, and the use convenience and reliability under the condition of long-term layout on the sea are remarkably improved.

The present application relates to the field of plant functional materials, and specifically provides a kind of plant night long-lasting luminescent nanohydrogel composite material and preparation method.The composite material is first coated by phosphate on SrAl2O4:Eu 2+ ,Dy 3+ Long afterglow powder;Second, polyurea nanonet reinforced gelatin-glycerol-borax ultrathin hydrogel carrier is prepared;Finally, the coated powder is uniformly dispersed in hydrogel to form a composite functional material.The present application realizes the uniform diffusion and long-term fixation of long afterglow powder in plant body, and after short excitation by natural light or indoor light, the plant can emit light stably for 2-4h at night, the light intensity retention rate is more than 80% for 15 consecutive days, and has no adverse effect on normal growth of plant, the fluctuation of key physiological indicators such as chlorophyll is less than 5%, which breaks through the bottleneck of short light-emitting time, poor uniformity and high plant toxicity of traditional technology.

The application discloses a multi-waveband light-emitting perovskite afterglow material and a preparation method thereof. The material is a matrix material, and an expression formula is ABa-xBaxI3-yCIy, wherein a value range of x is 0.5-0.7, and a value range of y is 0.05-0.4. The material has not only good cyan fluorescence and cyan afterglow, but also near-infrared fluorescence characteristics. The application can be applied to manufacturing a new type of light-emitting diode, which emits cyan fluorescence after being excited by specific light in a visible light wave band, exhibits cyan afterglow under specific conditions, and emits near-infrared light after being excited by specific light in a near-infrared light wave band. In the emergency lighting field, the application can be used to design an emergency sign with high visibility, soft light emission and long duration. In the security anti-counterfeiting field, the application can be used to design an anti-counterfeiting sign with high security and difficult to counterfeit.

This application discloses a long-afterglow visual perception-based road anti-icing material and its preparation method, belonging to the field of road maintenance. It consists of talc powder, a silane coupling agent, modified phosphor, and a conventional de-icing agent. Solid talc powder is placed in an ethanol solvent and stirred until a suspension is formed. An aminosilane coupling agent is added to the suspension and stirred to obtain amino-modified talc powder. Silica-modified phosphor is prepared using a sol-gel method. The phosphor-loaded talc material and de-icing agent are then used to prepare the road anti-icing material. The silane coupling agent effectively combines the phosphor with the de-icing agent matrix, constructing a stable luminescent composite system. This de-icing agent absorbs visible light during the day and continuously releases it at night. The luminescence distribution serves as a visual indicator to determine the coverage of the de-icing agent on the road surface and the need for re-spreading. This solves the problem of de-icing agent dosage during nighttime snow removal, achieving sufficient snow removal while minimizing damage to roads and the surrounding environment.

The application belongs to the technical field of organic afterglow crystal materials, and particularly relates to a host-guest type organic long afterglow crystal material and a preparation method and application thereof. The host-guest type organic long afterglow crystal material provided by the application ingeniously selects electron-rich diphenylamine material which is easy to crystallize and cheap and easy to obtain as a host material, and simultaneously introduces an electron-rich aniline derivative of the same type which is similar in structure and cheap and easy to obtain as a guest, thereby constructing a series of crystal materials with regular structures, and obtaining a series of new long afterglow light-emitting materials with adjustable colors (from yellow to green). The afterglow time of the material is more than 2s, the material has good afterglow light-emitting performance, and has good environmental stability to water and oxygen, thereby showing the application potential of the material in the fields of information encryption and anti-counterfeiting, and being capable of providing a theoretical basis and a material basis for practical applications such as data encryption and anti-counterfeiting.

The invention provides a weather-resistant stress-excited long-afterglow traffic marking coating and a preparation method thereof. According to the coating, SrAl2O4 (at) SiO2 (at) TiO2 / rGO of a core-shell satellite structure is used as a luminous functional material, and attapulgite, polymer resin and auxiliaries are combined to form a composite system. Through SiO2 coating and TiO2 / rGO satellite point modification, the water resistance and photocatalytic self-cleaning capability of the luminescent material are improved. Solvent-free polyurethane resin is adopted as a base material, and a light reflection microcavity structure is constructed in a coating through a process of spreading glass beads with different particle sizes step by step, so that long-acting afterglow luminescence under mechanical stress or light excitation is realized. The coating has excellent mechanical property, weather resistance and self-cleaning function, and solves the problem of poor environmental tolerance of traditional materials.

The application discloses a food contact safety type long-afterglow night light ink composition and a preparation method thereof, and belongs to the technical field of functional materials and fine chemical industry. The application takes a self-designed double-coated modified long-afterglow light-emitting material as a core functional phase, and combines a food-grade water-based connecting resin and a composite rheological additive to construct a full-compliance ink system. The modified material takes SrAl2O4:Eu 2+ ,Dy 3+ as a base body, and is sequentially coated with a 50-100nm dense nanosilica layer and a food-grade carboxylated polyvinyl alcohol layer with a carboxyl content of 5-8mol%. The application breaks through the technical prejudice in the field that "improving barrier property must be accompanied by loss of light-emitting efficiency", and the ink heavy metal migration and other indicators meet the requirements of GB 4806.14-2023, the light-emitting efficiency retention rate is more than 85%, and the application has excellent storage stability and printing adaptability, and is suitable for anti-counterfeiting and decorative printing of food contact packaging.

This invention discloses a highly efficient solar-excited long-wavelength long-afterglow material, its preparation method, and its applications. The material is characterized by its general chemical formula being Sr. 1‑x‑y Ga 2‑z Si2O8:xEu 2+ yLn 3+ zMn 2+ Where 0 < x ≤ 0.1, 0 < y ≤ 0.2, 0 < z ≤ 0.1; the preparation of the highly efficient solar-excited long-wavelength long-afterglow material is carried out according to the chemical formula Sr 1‑x‑y Ga 2‑z Si2O8:xEu 2+ yLn 3+ zMn 2+ The raw materials were weighed according to the stoichiometric ratio, ground and mixed, and then heated and cooled in a corundum crucible to obtain the product. The high-efficiency sunlight-excited long-wavelength long-afterglow material described in this invention has good crystallinity and stability to light, heat, and humidity. It has multiple emission peaks in the 400-800nm ​​range, and the solid-phase method is used, which does not involve strong acid solvents that pollute the environment, produces no harmful waste, and the synthesized sample does not require further purification. It can be matched with commercial blue light chips and has broad application prospects in the fields of lighting, display lamps, and optical electronics.

The preparation method of a phosphorescent group 7H-indole [2,3-c] quinoline series derivative with light response belongs to the field of organic intelligent materials. Several organic phosphorescent materials with NBCz as the core provided in the application can realize a color change from green or yellow-green afterglow to orange-yellow afterglow under the influence of different light activation times of a 365nm ultraviolet lamp, so as to achieve light-induced phosphorescent color change-stimulative response, and therefore can be widely applied to anti-counterfeiting, data encryption and sensing applications. The organic phosphorescent material with NBCz as the core has the following advantages: (1) simple and easy-to-follow synthesis route; (2) simple light activation condition; (3) large stokes shift, and remarkable effect.

Active standby (33) refers to the method for implementing an obstruction lighting system (2) consisting of n light sources (3), where n is a natural number and n > 1, with identical or similar specifications, placed inside i luminaires (4), where i = 1,...,n, at the top and / or along the height or width of the aviation obstacle (1) that requires marking. The method aims at safer operation, increased reliability, and an extended application field for the system (2), and is achieved through the simultaneous start of the periodic operating cycle of all n fight sources (3), main and auxiliary, in contrast to their serial operation with continuous (9) or periodic (10) light emission under prior art (9, 10, 31). The system (2) can produce either a continuous active light front with afterglow (26, 29) or without afterglow (25), or a periodic active light front, called regular flashing, with afterglow (28) or without afterglow (27), or a periodic active light front, called emergency flashing (36), with or without afterglow. It may also emit a coded message indicating position, emergency status, or communication in general, depending on the conditions and requirements defined by ICAO / FAA regulations and standards for each specific application.

The invention provides novel nanoparticles with tunable and multi-color afterglow emission for extended time after excitation, and compositions thereof as well as methods for their preparation and use in various applications.

The application belongs to the technical field of luminescent materials, and discloses a photochemical long-afterglow system, a preparation method and application thereof.The photochemical long-afterglow system mainly comprises a photosensitizer, a light energy storage unit and an emitter which are tightly combined through coordination.The working principle is that the photosensitizer generates singlet oxygen under the irradiation of excitation light, the singlet oxygen reacts with the light energy storage unit to generate an epoxy structure intermediate, the excited state photooxidation product is generated after chemical excitation, and the energy is transferred to the emitter, the emitter releases photons, and then the afterglow light is realized.The construction idea of the system greatly widens the selection range of the intermediate and the emitter in the photochemical long-afterglow system, and provides a new idea for improving the luminescent quantum yield and luminous brightness of the photochemical long-afterglow.

The application discloses a kind of full black environment long afterglow photoelectric combination identification devices of ultra-long endurance time, including long afterglow light board, shell, time control lighting module, long afterglow light board is set on the upper portion of shell, time control lighting module is set in the region surrounded by long afterglow light board and shell;Time control lighting module includes power supply, switch shell, ultraviolet lamp by wire series connection, two electrodes are provided in switch shell, photo-induced deformation sheet, two electrodes are not connected, photo-induced deformation sheet one end is fixed on switch shell, the other end surface is wrapped with conductive material, when photo-induced deformation sheet is not deformed, the one end of photo-induced deformation sheet wrapped with conductive material is connected on two electrodes, circuit is closed;When photo-induced deformation sheet occurs bending deformation, the one end of photo-induced deformation sheet wrapped with conductive material is separated from electrode, circuit is disconnected.The application does not need additional energy standby power consumption is 0, all power consumption is the power consumption of light source lighting, endurance time is effectively improved.

The application belongs to the field of plastic modification and particularly relates to a long-afterglow luminous pavement material and a preparation method thereof. 15-30 parts of modified luminous master batch A, 45-150 parts of rigid resin particles B, 3-6 parts of unsaturated monomer, 0.2-0.5 parts of initiator and 0.2-0.4 parts of antioxidant are blended and extruded through a double-screw extruder, wherein the modified luminous master batch A is prepared by stirring and infiltrating 20-40 parts of luminous powder and 0.01-0.03 parts of surface modifier, and adding 4-12 parts of compatilizer and 0.5-2 parts of dispersant. The luminous particles have good afterglow effect, are easy to be coated, have good adhesion, high strength and wear resistance, and have controllable shape and size.

This invention provides a tunable dual-mode luminescent phosphor, its preparation method, and its anti-counterfeiting application. The chemical formula of the tunable dual-mode luminescent phosphor is LiIn. 1‑x‑y+xy Sc x‑xy GeO 4 :yBi 3+ Where 0≤x≤0.5, 0.002≤y≤0.02. The tunable dual-mode luminescent phosphor provided by this invention has high stability and will not deliquesce even after being placed in air for a long time. Under ultraviolet light excitation, by adjusting the atomic ratio of Sc to In in the phosphor components, the emission color from orange-yellow light to blue light can be continuously adjusted. At the same time, the afterglow emission time is adjustable, and a visible afterglow time of 0-10s can be maintained after excitation stops.

This invention discloses a white-light communication μLED device with physical-layer temporal encryption, along with its encryption method and system. The device is based on an InGaN / GaN blue μLED array, with orange-red μLED encryption units based on organic long-afterglow materials integrated on adjacent mesa via a masking process. These encryption units generate controllably decaying afterglow emission after the pulsed current stops. By adjusting the pulse parameters, the duration and brightness of the afterglow can be changed, thereby writing encrypted information in the temporal dimension. The blue unit outputs a high-speed communication signal, while the orange-red unit emits afterglow carrying the ciphertext. The two lights mix in space to form a stable white light output. This structure simultaneously achieves illumination, high-speed communication, and physical-layer encryption in a single device. This invention offers a highly concealed encryption mechanism, a large modulation bandwidth, a simple device structure, and compatibility with existing systems, providing crucial hardware support for high-security visible light communication.

The application provides a device and method for measuring infrared product afterglow, comprising: a target plate, wherein at least one target hole is arranged on the target plate; a driving mechanism, which is used for driving the target plate to rotate; and a temperature control mechanism, which is arranged on the back side of the target plate, is used for generating infrared radiation, and the generated infrared radiation can pass through the target hole. The device drives the target plate to rotate through the driving mechanism, controls the temperature of the target point of the target plate through the temperature control mechanism, makes the target have a stable infrared wave band, and adjusts the temperature of the target point, so that clear and stable imaging effect is ensured, and the test accuracy of the infrared product afterglow is improved.

This invention discloses an outdoor signage energy-storage self-luminous material and its preparation method in the field of energy-storage self-luminous material technology. The energy-storage self-luminous material is a three-layer board, including a top layer, a middle layer, and a bottom layer. The raw materials, by mass percentage, include: 5%-45% dual-mechanism heat-sensitive luminescent powder; 50%-90% thermoplastic matrix; 0.1%-0.5% intelligent photothermal response additive; 4.0%-4.5% reinforcing filler; and 1.2%-2.5% weather-resistant protective component. The dual-mechanism heat-sensitive luminescent powder is composed of SrAl2O4:Eu... 2+ ,Dy 3+ Long afterglow powder and NaYF4:Yb 3+ Er 3+ After mixing with SiO2 upconversion powder, the mixture undergoes sequential chelation with 3-hydroxy-2-naphthoic acid-boronate, inorganic silicon-oxygen copolymerization, and fluorosilane crosslinking, followed by drying and curing. This invention, through the synergistic effect of multiple structures and components, comprehensively optimizes the luminescent properties, weather resistance, mechanical stability, and intelligent adaptability of outdoor signage materials, providing reliable technical support for the upgrading of outdoor signs such as road safety signs, highway signs, and tunnel emergency signs.

The application discloses a luminescent powder coating and a preparation method thereof, and belongs to the field of powder coating preparation. The carboxyl-terminated polyester resin is added to provide superior mechanical properties for the powder coating, the fluorine-containing acrylic resin is easy to coat the luminescent material, and the luminescent material can maintain stable performance in long-term outdoor exposure and is not prone to fading, pulverization and aging problems, so the luminescent material coated by the fluorine-containing acrylic resin is added to the powder coating system, and the weather resistance of the luminescent material can be obviously improved. The bonding process treatment enables the luminescent material to be arranged firmly and uniformly and orderly on the surface of the coating film, so that the luminescence is more uniform. Overall, through the use of the compounding of components, the components are synergistically combined, so that more excellent performance is exhibited. Compared with traditional powder coatings added with fluorescent agents, the powder coating has better weather resistance, high afterglow brightness, can be effectively used in outdoor places, can play a decorative and warning effect, has excellent overall stability, and still maintains excellent luminescent performance after long-time storage and use.

The invention discloses a phenyl-naphthyl double-group modified g-CN phosphorescent material as well as a preparation method and application thereof, and belongs to the technical field of functional materials. The preparation method comprises the following steps: taking 2-naphthylacetonitrile, dicyandiamide and potassium hydroxide as raw materials to prepare naphthyl melamine; the preparation method comprises the following steps: mixing and grinding benzene melamine and naphthyl melamine to obtain precursor powder; calcining the precursor powder, and cooling to obtain the phenyl-naphthyl co-modified g-CN phosphorescent material. The phenyl-naphthyl double-group modified g-CN phosphorescent material prepared by the invention accelerates a charge transfer process from a singlet state to a triplet state, so that triplet excitons realize efficient radiative recombination, and bright yellow afterglow which can last for 4 seconds is generated under a normal temperature condition; and when the material is placed under the extreme conditions of high temperature, polar solvent, oxidation reduction and the like, the phosphorescence of the g-CN can still be normally emitted, and good application performance is shown.

The long-afterglow luminescent anti-slip marking tile comprises, from bottom to top, a base layer, a white reflective glaze layer, a long-afterglow luminescent layer, and a transparent glaze layer. A portion of the upper surface of the transparent glaze layer features a glaze marking layer of a different color from the long-afterglow luminescent layer, forming a light-shielding, color-revealing graphic area. The remaining areas of the transparent glaze layer without the glaze marking layer form a light-transmitting luminescent area. An anti-slip structural layer is located on the upper surface of the glaze marking layer. This anti-slip structural layer is either a transparent or semi-transparent anti-slip light-transmitting structural layer one, or / and an anti-slip light-shielding structural layer two of the same color as the glaze marking layer, forming a light-transmitting anti-slip structural layer with a rough, uneven surface. All layers are sintered at medium temperature to create a highly recognizable multi-layered inorganic anti-slip marking tile with a high degree of visual identification. Visual identification in the bright field is achieved through the color difference between the light-shielding, color-revealing graphic area and the light-transmitting luminescent area, while in the dark field, visual identification is achieved through the contrast of brightness between the light-shielding, color-revealing graphic area and the light-transmitting luminescent area.

This invention discloses a lamp with a self-cleaning photoresponsive functional coating and its preparation method in the field of functional coatings and lighting equipment. The core of this invention lies in the preparation of two novel functional materials: europium-dysprosium co-doped double perovskite-type bismuth oxytellurate barium nanocrystals, and tungstic acid-functionalized titanium dioxide and molybdenum disulfide heterojunction. Subsequently, these two materials are mixed with fillers such as blue long afterglow powder, nano-graphite phase carbon nitride, and nano-titanium dioxide, as well as additives such as fluorosilicone modified resin, to obtain a self-cleaning photoresponsive coating. Finally, the coating is applied to the surface of the lamp through processes such as cleaning, spraying, leveling, and segmented baking. The lamp coating obtained by this invention integrates long afterglow luminescence characteristics and efficient photocatalytic ability, which can continuously decompose surface pollutants in both light and dark environments, and has superhydrophobic properties. It realizes multiple functions such as all-weather self-cleaning, air purification, and decorative lighting, significantly improving the practicality and durability of the lamp.