52 results about "Afterglow" patented technology

The invention discloses an early warning method and system for intelligently detecting fire scene waste heat reburning based on AR glasses, and relates to the technical field of fire safety intelligent monitoring. The early warning method comprises the following steps: scanning a conical area in front of a visual field in real time based on AR glasses, capturing temperature matrix data and collecting environmental parameter data, and identifying afterheat hot spots in the visual field and associated article types based on a YOLOv8s model; based on edge AI comprehensive temperature matrix data and environmental parameter data, risk indexes of residual heat hot spots are calculated in real time and visualized into low, medium and high risks; locking and analyzing the temperature change of the medium-high risk article, dynamically correcting the safety coefficient in combination with an article material database, and visualizing the detailed information, the real-time temperature and the risk index of the article; and spraying and cooling the high-risk target based on the guidance of AR glasses, and judging whether the risk is relieved or not according to the temperature attenuation rate and the risk index. By implementing the technical scheme provided by the invention, the fire scene afterheat after-combustion hidden danger can be quickly, comprehensively and intuitively detected.

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 invention relates to a method for plasma-assisted sintering of calcium stannate short-wave infrared long afterglow powder, the chemical composition of the long afterglow powder is Ca2SnO4: xEr < 3 + > / Pr < 3 + > / Nd < 3 + >, and x is more than or equal to 0.1 and less than or equal to 1; the long afterglow powder takes calcium stannate as a matrix and is formed by doping and sintering rare earth capable of emitting red light. The sintering adopts a stir-frying plasma assisted low-temperature sintering method, compounds containing an erbium element, a praseodymium element and a neodymium element are doped, namely erbium trioxide, praseodymium trioxide and neodymium oxide, and H3BO3 is added as a fluxing agent to prepare a sample. The method is low in energy consumption, and the yield of the calcium stannate fluorescent powder is effectively improved; according to the invention, short-wave infrared long-afterglow luminescence of doped ions is realized, and the emission wavelength is adjustable from 800nm to 1600nm.

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 present invention discloses a method for preparing a photothermal energy storage super-hydrophobic all-weather anti-icing coating, comprising: step 1, preparing long-afterglow nanoparticles, step 2, in-situ modifying a double-shell microcapsule phase change material with the long-afterglow nanoparticles, step 3, performing low-surface-energy modification treatment on the composite particles, and step 4, preparing a photothermal energy storage super-hydrophobic anti-icing coating; the anti-icing coating prepared by the present invention delays freezing by means of a super-hydrophobic surface formed by super-hydrophobic micro-nanostructured particles; photothermal materials are used to efficiently convert solar energy into thermal energy, thereby achieving instant anti-icing and storing the remaining heat in the phase change material; long-afterglow materials are used to store sunlight for nighttime photothermal conversion, and combined with the stored heat released by the phase change material, long-lasting nighttime anti-icing and de-icing are achieved; the present invention achieves effective all-weather anti-icing through a multi-level anti-icing mechanism, thereby solving the problem of poor all-weather anti-icing / de-icing effects of existing coatings under low-temperature and high-humidity conditions, and has important application prospects in anti-icing fields such as power transmission lines and aircraft wings.

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 belongs to the technical field of luminescent materials, and particularly relates to a white long-afterglow luminescent material as well as a preparation method and application thereof. The molecular formula of the white long-afterglow luminescent material is NaSr2GaGe5O14: Pr < 3 + >, Pr < 3 + > is an activator, and NaSr2GaGe5O14 is a matrix. The luminescent material provided by the invention has more advantages in the aspect of chemical stability, is not easily influenced by environmental factors such as water, oxygen and the like to cause reduction of luminescent property, and can be used under wider environmental conditions. In addition, the fluorescent powder also has the advantages of good white light-emitting characteristic, excellent long afterglow performance, high light-emitting stability, strong spectrum adjustability and the like.

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 provides an organic long-afterglow material capable of stably emitting light in a severe environment and a preparation method of the organic long-afterglow material, and belongs to the field of organic long-afterglow materials. The preparation method of the organic long-afterglow material comprises the following steps: fully dissolving a tetraphenyl ethylene derivative and polyarylene ether nitrile in an organic solvent, casting on a horizontal glass plate to naturally cast into a film, heating to remove the solvent to obtain a doped film, and irradiating the doped film under an ultraviolet lamp to generate a light cyclization reaction to obtain the organic long-afterglow material. The phosphorescence service life of the doped film is further prolonged, and the organic long-afterglow material capable of stably emitting light in a severe environment is obtained. The organic long afterglow material prepared by the invention has excellent heat resistance, aging resistance and acid and alkali resistance, and can be suitable for severe environments. Meanwhile, the organic long-afterglow material promotes a light cyclization reaction through ultraviolet radiation, so that the photochromism of the material can be realized, the phosphorescence service life is prolonged, longer afterglow is realized, and the organic long-afterglow material has a very good application prospect in the fields of ink-free printing, anti-counterfeiting watermarking, information encryption and the like.

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.

The invention provides a red afterglow material capable of being excited by natural light and a preparation method of the red afterglow material. The general formula of the red afterglow material is Gd < 3-x > Cax-0.02 GaO6: 0.02 Eu < 2 + >, wherein x is more than or equal to 0.3 and less than or equal to 0.7. When x is more than or equal to 0.3 and less than or equal to 0.6, the afterglow emission attenuation rate of the red afterglow material is gradually slowed down along with the increase of the x value. And when x is equal to 0.6, the red afterglow attenuation rate of the red afterglow material is slowest. And when x is greater than 0.6, the red afterglow attenuation rate of the red afterglow material is increased. The prepared red afterglow material can be excited by visible light and ultraviolet light in any form, the afterglow emission intensity is high, and the afterglow duration can reach one hour. The adopted high-temperature solid-phase preparation method is simple in preparation process, easy to operate and control, high in safety, short in preparation time, high in production efficiency and suitable for industrial large-scale production, popularization and application, and the production cost is greatly reduced compared with the prior art.

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 invention discloses a fire hose with self-luminous and intelligent monitoring functions and a control and monitoring method, and relates to the technical field of fire fighting equipment, the fire hose comprises a hose body, a self-luminous component and an intelligent monitoring system; the self-luminous assembly comprises a SrAl2O4-based long afterglow luminescent material coating and a built-in waterproof and explosion-proof LED flexible lamp strip, wherein the outer layer of the water hose body is coated with the SrAl2O4-based long afterglow luminescent The intelligent monitoring system is integrated at a water hose connecting buckle, comprises a dual pressure sensor array, an attitude sensor, a LoRa wireless transmission module and an annular LED warning lamp strip, and can realize pressure abnormity grading alarm and water hose arrangement state monitoring. According to the invention, the visibility of a dark environment is improved through dual-mode self-illumination, the problems of insufficient pressure monitoring and water leakage of a connecting buckle are solved through accurate monitoring and visual alarm, and the safety and efficiency of fire rescue are remarkably improved.

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 present invention is a white light long afterglow phosphor and its preparation method. The structural formula of the phosphor is Cs2(Na 0.9 Ag 0.1 In) 1‑ x Zr x Cl6; wherein 0.1≤x≤0.9; its emission wavelength covers the 350-850nm range, and after 5 minutes of ultraviolet light excitation, the white light afterglow decay time exceeds 0.5-5 hours. The present invention can be synthesized at room temperature, does not require a redox atmosphere, and provides a phosphor with good stability and excellent afterglow decay performance.

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.

The application relates to the technical field of materials, and discloses an organic long-afterglow material and a preparation method and application thereof. The organic long-afterglow material comprises a host component and guest molecules doped in the host component; the host component comprises melamine formaldehyde resin; the guest molecules comprise aromatic organic compounds containing heteroatoms; the heteroatoms comprise N and S. The melamine formaldehyde resin organic long-afterglow material provided by the application is doped with aromatic organic compounds containing heteroatoms N and S, has long afterglow light-emitting life, good long-afterglow performance stability, and a maximum emission peak life in a time spectrum of more than 100 ms, and can meet the performance requirements of long-afterglow materials in the fields of anti-counterfeiting, data encryption, functional ink, road marking and the like.

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 present invention discloses an intrinsic type dynamically color-adjustable cyclic olefin copolymer long afterglow material and its application, wherein the material comprises a cyclic olefin copolymer of any one of the following structural formulas: wherein: R 1、 R2, R3, and R4 are substituents, R5 is a chromophore, and a, b, c, d, and e represent the degree of polymerization. This material exhibits excellent processing properties, enabling the fabrication of complex-shaped light-emitting devices. Its long-lasting emission color is adjustable across the entire visible light range, exhibiting stable long-lasting emission in aqueous, acidic, alkaline, and high-temperature environments. It has applications in anti-counterfeiting, encryption, imaging, lighting, and detection.

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 invention discloses a composite marking coating which is composed of 15-20 parts of m-pentadiene resin, 25-40 parts of modified special nylon, 20-35 parts of composite long afterglow fluorescent powder-photo-thermal phase change microcapsules, 20-35 parts of mixed solvent and 3-10 parts of auxiliaries. Wherein the modified special nylon is reinforced by adopting fibers, natural minerals and synthetic fillers; the microcapsule takes Sr2MgSi2O7: Eu < 2 + >, Dy < 3 + > and Nd < 3 + > as cores, sequentially coats an Al2O3 layer and a hydrophobic SiO2 layer, is encapsulated by modifying PMMA (Polymethyl Methacrylate) with carbon quantum dots after being subjected to vacuum impregnation with phase-change paraffin, and cooperates with a nano protective layer to block environmental erosion through phase-change latent heat buffering daytime heat accumulation / night energy release light supplement, so that the persistence of afterglow at night, thermal stress cracking resistance and weather resistance of marking lines are remarkably improved, and long-acting service of roads is realized.