58 results about "Persistent luminescence" patented technology

The invention discloses a method for manufacturing a long-afterglow device. The method comprises the following steps of: preparing rear earth fluorescent powder; and arranging the rear earth fluorescent powder on a light emitting surface of a luminescent device. The invention also provides the long-afterglow device. According to the invention, the rear earth fluorescent powder is arranged on the light emitting surface of the luminescent device so that the luminescent device can still emit light continuously after power off, therefore, the luminescent device possesses a function of emitting light without power supply, an obvious energy-saving effect is achieved; and the rear earth fluorescent powder is not harmful to human bodies, and can prolong the time of the luminescent afterglow, the luminescent brightness is intensified, the device is maintaining-free, has the advantages of environmentally-friendliness, radioactive safety and the like, and the application fields and using range of the device are widened greatly.

The invention discloses a manufacturing method of a solvent-free thermochromic luminescent synthetic leather. The method includes the steps that firstly, a long-afterglow luminescent material is subjected to surface group activation modification; then, the modified long-afterglow luminescent material and a thermochromic capsule are introduced into a polyurethane surface layer at the same time through a bi-component in-situ coating technology, and the solvent-free thermochromic luminescent synthetic leather is obtained. The problems are solved that an existing blended compound luminescent material has poor compatibility with polyurethane, migration separation-out occurs easily and distribution is not uniform. The synthetic leather can absorb and store sunlight in the daytime and continuously emit light at night, the color can change reversibly with temperature in the daytime, the color of light can also change with temperature at night, the color of polyurethane can be controlled by changing temperature, the synthetic leather can have new styles and designs, the functionality of the synthetic leather is improved, and the application range of the synthetic leather is broadened. No organic solvent is used in the preparation process, which meets the development tendency of the synthetic leather industry and the green consumption and environmental health requirements of consumers.

The invention discloses an organic super-long room-temperature phosphorescent material which is an organic phosphonium salt prepared by taking triphenylphosphine as a raw material, the compound can still continuously emit light for a period of time after an excitation light source is turned off after 300nm ultraviolet irradiation, and multiple digital encryption is realized by utilizing phosphonium salt crystals with the same light emitting color and different light emitting lives; secondly, an ethanol solution of the organic phosphorescent material is used as safe ink, so that multiple safe anti-counterfeiting effects are achieved.

The invention discloses preparation and application of an organoboron phosphorescent material with the ultra-long lasting luminescent performance. By molecular design, electron-absorbing group difluoro boron and various donor groups are introduced in molecular, and the organoboron phosphorescent material with the ultra-long lasting luminescent performance is synthesized. The organic long lasting material has the advantages that the costs of raw materials are low, synthesis is easy and convenient, lasting luminescence for several seconds is achieved after an excitation source is closed, and thefluorescence quantum efficiency is high. Wide potential application value of the material is achieved in the fields such as anti-fake, bioimaging and photoelectric materials, and the organoboron phosphorescent material is expected to be applied to the fields such as anti-fake and organic light-emitting devices.

The present invention provides a photoluminescent coating material, which comprises 12-35% of a photoluminescent material, 1-8% of natural muscovite powder, 2-6% of a dispersing agent, 1-3% of a film forming aid, 1-2% of a thickener, 0.5-2% of an antifoaming agent, 12-20% of a polymer emulsion, and the balance of deionized water. The present invention further provides a preparation method of the photoluminescent coating material. The photoluminescent coating material of the present invention has characteristics of stable performance and storage resistance of the coated product, good decoration effect, good luminescence luminosity, and high luminescence brightness, wherein the luminescence can last for more than 10 h after the photoluminescent coating material absorbs light for 1 h.

The invention relates to a yellow long-afterglow luminescent material utilizing calcium stannate as a luminescent material substrate, trivalence dysprosium irons Dy<3+> as a luminescent activating agent and boric acid as a material synthesis fluxing agent. The invention also provides a preparation method of the yellow long-afterglow luminescent material. The preparation method comprises the steps of measuring raw materials such as CaCO3, SnO2, H3BO3 and Dy2O3 according to a chemical measuring ratio, sufficiently grinding the raw materials, uniformly mixing the ground raw materials to obtain a mixture I, filtering the mixture I by means of a sieve with the granularity of 180-220 meshes to obtain mixed powder, tabletting the obtained mixed powder, then calcining the mixed powder, naturally cooling the mixed powder to room temperature, grinding the mixed powder, filtering the mixed powder by means of the sieve with the granularity of 180-220 meshes, thereby obtaining the yellow long-afterglow luminescent material. After being radiated by ultraviolet rays, the material emits out light in yellow rays; after a light source is moved away, the material can continuously emit out light in a luminescent brightness capable of being distinguished by eyes. The preparation method of the yellow long-afterglow luminescent material is simple, pollution-free, radiation-free and low in cost.

The invention relates to an animal ear tag capable of performing photoluminescence. The animal ear tag can still emit light continuously after exciting light stops irradiation, does not consume electric energy, can store the absorbed natural light, takes on bright and differentiable visible light, has a lighting function and can mark animals at night conveniently. The animal ear tag has the characteristics of storing light by using sunlight or lamplight and emitting light at night or in dark places. Marks such as characters or patterns and the like on the ear tag can be discriminated without other light sources. The ear tag has advanced, novel and convenient design and high functionality.

The invention provides a method for preparing hollow microsphere doped glass. The method comprises the following steps: S1, mixing first glass powder, a dispersing agent and a foaming agent into uniform slurry, centrifuging and atomizing the slurry, and drying in a drying oven to obtain a microsphere blank; S2, sintering the microsphere blank to obtain hollow glass microspheres; S3, uniformly mixing second glass powder with the hollow glass microspheres, melting, quenching and annealing to obtain glass doped with the hollow glass microspheres, wherein the melting temperature is lower than themelting temperature of the hollow glass microspheres. Under the condition that the long-afterglow material is added in the S1, the glass doped with the long-afterglow hollow microspheres is obtained.The glass can absorb ultraviolet light to play a role of a light-emitting center and can continuously emit light at night, and when the glass is applied to a photovoltaic module, the photovoltaic module can also be in a working state at night.

The invention discloses a bi-component organic room-temperature phosphorescent material and a preparation method thereof, the bi-component organic room-temperature phosphorescent material is doped in a host-guest form, the synthesis steps are simple, the cost is low, the stability is good, under a dry condition, the bi-component organic room-temperature phosphorescent material has an ultra-long luminescence life, after being excited by a 254nm ultraviolet light source and under a dark condition, the bi-component organic room-temperature phosphorescent material can still continuously emit light, and after water is added, the luminescence quantum efficiency is improved.

The invention discloses an organic-inorganic two-dimensional perovskite room-temperature phosphorescent material as well as a preparation method and application thereof, and the organic-inorganic two-dimensional perovskite room-temperature phosphorescent material with long afterglow luminescence performance is synthesized by selecting an organic layer with a strong electron-donating group and an inorganic layer with a relatively strong rigid structure through molecular design. The two-dimensional perovskite room-temperature phosphorescent material disclosed by the invention has the advantages of low raw material price, simple synthesis method, capability of continuously emitting light for several seconds after an excitation light source is turned off, and the like. The material has wide potential application value in the fields of anti-counterfeiting encryption, photoelectric materials and the like, and is expected to be applied to the fields of anti-counterfeiting encryption, electroluminescent devices and the like.

The invention discloses a 3D printing ABS composite material capable of continuously emitting light and a preparation method thereof. The preparation method comprises the following steps: respectively weighing long afterglow fluorescent powder, KH550, ABS particles and ABS powder; adding the KH550 into deionized water, carrying out hydrolyzing and stirring, adding fluorescent powder, performing refluxing, cooling and washing, carrying out vacuum drying to constant weight, and conducting grinding to obtain KH550 modified fluorescent powder; after the ABS powder is acidified by hydrochloric acid, grafting the acidified ABS powder with the KH550 modified fluorescent powder through HATU to obtain a composite material; and subjecting the composite material to melting and manufacturing through a 3D printing extruder, and carrying out extrusion and drawing to obtain the 3D printing ABS composite material capable of continuously emitting light. According to the preparation method, the combination of a long-afterglow luminescent material and a 3D printing technology is realized, and the prepared 3D printing composite material not only can continuously emit light, but also has good mechanical properties, can be applied to the aspects of medicine, the manufacturing industry, the food industry, the industry, the jewelry industry and the like, and greatly expands the application field of 3D printing.

The invention relates to a composite light-storing ceramic for fire-fighting indication and a preparation method thereof. The preparation method comprises the following steps: respectively weighing light storage powder and glass powder according to a ratio, putting the light storage powder and the glass powder into a granulator, and directly stirring and granulating to obtain a mixture; directly screening the mixture through a screen in a distributing machine and flatly laying into a mold, then covering the surface of the mixture with a frosted glass sheet printed with patterns, and feeding the frosted glass sheet and the frosted glass sheet into a roller kiln together to be fired; dividing a roller kiln into a preheating zone, three sintering zones, a quenching zone and a slow cooling zone, and dividing the roller kiln sintering step into a pre-sintering stage, three sintering stages and two cooling stages; and further processing the sintered ceramic product according to requirements.According to the composite light-storing ceramic prepared by the invention, after 20 minutes of light storage, 18 hours (more than 0.32 mcd/m <2>) of continuous luminescence can be realized at most,and the initial 1 min intensity is more than 4800 mcd/m<2 >; wherein the intensity is greater than 44 mcd/m<2> (outdoor sunlight is directly irradiated for 20 min, a fluorescent lamp is used for 30 min, ultraviolet rays are used for 5 min, and the room temperature is tested at 25 DEG C).

The invention provides a luminescent fibre. Luminescent master material as an additive is added into fibre to prepare the luminescent fibre through the process of light absorption, light accumulation and irradiation. The luminescent fibre has no toxicity, no innocuity, no radioactivity, lustrous surface, flexible texture and good antiaging performance; after the luminescent fibre absorbs various visible lights for 10 minutes, the luminescent fibre can keep irradiating for over 6 hours in darkness.

The invention discloses a polyester high-strength netting twine with a self-luminous function and a preparation method thereof. The preparation method comprises the following steps of compounding an alkaline earth aluminate luminous material and an alkaline earth silicate luminous material to obtain mixed luminous powder; dynamically and statically mixing a self-luminous polyester master batch melt containing high-concentration luminous powder with an ordinary polyester melt to obtain a mixed melt containing low-concentration luminous powder; spinning self-luminous polyester FDY filaments which have large amorphous regions and low crystallinity and are more suitable for multi-stage drawing by adjusting and controlling spinning parameters; and then, performing low-speed multi-stage drawingtreatment on the self-luminous polyester FDY filaments . The polyester high-strength netting twine with the self-luminous function prepared by the preparation method provided by the invention has theadvantages that the fracture intensity is greater than 6.5 cN/dtex, the boiling water shrinkage rate is lower than 4 percent, and after sufficient light illumination, the polyester high-strength netting twine can continuously emit light in the dark for 12 h or longer.

The invention provides a single-ended DC (direct current) input LED (light-emitting diode) straight-tube fluorescent lamp which comprises an LED illuminator and a lamp tube, wherein the inner wall of the lamp tube is coated with a fluorescent powder coating, one end of the lamp tube is open and the other end of the lamp tube is closed, and the LED illuminator is installed at the open end of the lamp tube; and the peak wavelength of the spectrum of light emitted by the LED illuminator is between 320nm and 480nm. Since the LED illuminator capable of emitting blue and violet light is mounted at the open end of the lamp tube, the peak wavelength of the spectrum of light emitted by the LED illuminator is between 320nm and 480nm, and the fluorescent powder coating is coated on the inner wall of the lamp tube, and when blue and violet light emitted by the LED illuminator irradiates the fluorescent powder coating on the inner wall of the lamp tube, the fluorescent powder coating is activated to emit light continuously. In the invention, mercury grains causing environment pollution are not used, and the lamp tube does not need to be vacuumized, therefore the single-ended DC input LED straight-tube fluorescent lamp has the advantages of an LED lamp, such as energy saving, environmental friendliness and long service life, and also has the characteristics of a fluorescent lamp, such as high luminous flux and high unit power lumen, is energy-saving and environmentally-friendly.

The invention relates to the technical field of medical aids, and specifically to a method for producing a fluorescent fabric for a medical first-aid kit. Blended fibers are placed into a fluorescent agent for soaking and then dried, in which the fluorescent agent is made from such raw materials as dioctyl phthalate and an organic phosphonic coupling agent; the blended fibers are processed into a blended fabric; the blended fabric is coated with a layer of waterproof adhesive; afterwards, the blended fabric is plasticized. The method for producing a fluorescent fabric for a medical first-aid kit provided by the present invention allows the fluorescent agent to be absorbed by the blended fibers to an utmost extent such that the produced fluorescent fabric is able to keep the fluorescent properties persistently. Particularly, the fluorescent agent is added with the component organic phosphonic coupling agent component that is capable of remarkably improving the persistent luminescence of a photo-induced energy-storage luminous powder in the fluorescent agent as compared to a traditional silicone coupling agent. The waterproofness and friction durability of the fabric can be remarkably improved by means of application of the waterproof adhesive and plasticization to the blended fabric.