35results about How to "High afterglow brightness" patented technology

The present invention relates to a white light LED which has a high lighting efficiency, a good color displaying capability and has a plurality of afterglow colors or light storing capability. The present invention adopts at least two white light LED which have different peak value wave lengths and launching spectral and adjusts the two weights of the two fluorescences through the white LED to get the white LED lighting device which has a good color displaying capability, a high lighting efficiency, a plurality of afterglow colors and times.

The invention provides super fine grain size high light efficiency long lad fluorescent powder. The chemical structural formula of the fluorescent powder is Srm-pMepAl2O(3+m+q):Eux, Dyy, Rz, wherein Me is at least one of Ba and Mg; R is at least one of La and Gd; m is more than 1 and less than or equal to 0.3; p is more than or equal to 0.006 and less than 0.3; q is equal to x plus y plus z; x is more than or equal to 0.005 and less than or equal to 0.05; and z is more than or equal to 0.0001 and less than or equal to 0.01. The preparation method comprises the following steps: 1) by taking the chemical structural formula of target products as a measuring base, oxides of Sr, Ba, Mg, Eu, Dy, La and Gd and nitrate or carbonate are picked up as raw materials; 2) the raw materials are added with reaction auxiliary agent; 3) the mixed materials are placed in a high-temperature reducing atmosphere furnace, and subjected to high-temperature synthesis under the protection of N2H2 mixed gas; 4) the sintered fluorescent powder blocks are crushed to obtain super fine grain size long lad fluorescent powder; and 5) the crushed fluorescent powder is subjected to aftertreatment to obtain the finished product. The fluorescent powder has the advantages of super fine grain size and centralized distribution and higher brightness and longer afterglow time, and can be better applied to fields such as luminescent fiber, printing, coating material.

The invention discloses a inverse spinel structure magnesium stannate green long persistence phosphor to prepare Mg2SnO4 as substrate and Mn2+ as activating ion activate by bivalent manganese ion, which comprises the following steps: adopting MgO and SnO2 as substrate; blending Mn2+ ion; adding Mn(CH3COO)2 .4H2O; setting the quantity of doping agent at 0.005-1 percent mole; weighing MgO and SnO2 according to 2:1 molar proportion; putting 0.005-1 percent mole activator in the pot; setting igniting temperature at 950-1250 deg.c for 1-3 h; setting active carbon as reducer; fetching the reactor out of furnace; cooling in the air to produce almost white product; luminating the product through 254 nm ultraviolet lamp to see green long persistence phosphor; displaying the best effect when the doping quantity of Mn2+ is at 0.2-0.3 percent and color coordination of x is 0.0875 and y is 0.6083.

A fired product having a luminous function is manufactured by: adhering material-adapting glass frit to a surface of a ceramic material; adhering coating glass frit to the surface of the material-adapting glass frit after drying of the material-adapting glass frit; adhering luminous material particles having a particle size of 50 to 250 μm in one uniform layer to the coating glass frit layer before drying of the coating glass frit so that the upper portions of the luminous material particles are partly exposed from the coating glass frit; alternately stacking coating glass frit and luminous material particles several times; covering the topmost luminous material particles partly exposing from the coating glass frit by adhering coating glass frit; printing an image portion on the surface of the coating glass frit after drying of the coating glass frit; adhering adapting glass frit at a predetermined thickness to the coating glass frit having the printed image portion; uniformly adhering protecting glass frit particles having a large particle size to the surface of the adapting glass frit; and firing the adhered stack at high temperature, wherein the material-adapting glass frit has a coefficient of thermal expansion of an intermediate value between those of the ceramic material and the luminous material particles, the coating glass frit has a coefficient of thermal expansion substantially the same as that of the luminous material particles, and the adapting glass frit has a coefficient of thermal expansion of an intermediate value between those of the luminous material particles and the protecting glass frit particles having a large particle size. This fired product is used in an image forming part of an evacuation route guiding sign device as a fired product layer.

This invention relates to the preparation of a nanometer silicate long persistence illuminate material, and this invention applies collosol-gelatum technology. Silicate is used as base material, and Eu2+ is used as activating agent, and Dy3+ is assistant activating agent, and boracic compounds is added to improve the performance of afterglow, so the invention is composed by silicate, Eu2+, Dy3+ and boracic compounds. Its molecular formula is Sr2-x-yMgSi2O7: Eux, Dyy, with 0.001 C09K 11 / 59 1 5 1 2006 / 11 / 8 1948426 2007 / 4 / 18 000000000 Tianjin Univ. Tianjin 300072 Ji Huiming Lv Ying Xu Mingxia wangli 12201 The Patent Agency of Tianjin University Qilitai, the City of Tianjin 300072

A waterproof and thermal resistant high luminosity long persistence fluorescent powder is produced by: using europium (Eu2+) and dysprosium (Dy3+) as activators and magnesium and strontium aluminate as matrix. It contains two steps i.e. first, preparing fluorescent powders, second, covering jargonia and triethanolamine on it. The products are of high luminosity, long persistence, liquidity, good resistance to effect of heat and water and dispersed easily. The process is facility and operated-friendly.

The invention discloses a inverse spinel structure magnesium stannate green long persistence phosphor to prepare Mg2SnO4 as substrate and Mn2+ as activating ion activate by bivalent manganese ion, which comprises the following steps: adopting MgO and SnO2 as substrate; blending Mn2+ ion; adding Mn(CH3COO)2 .4H2O; setting the quantity of doping agent at 0.005-1 percent mole; weighing MgO and SnO2 according to 2:1 molar proportion; putting 0.005-1 percent mole activator in the pot; setting igniting temperature at 950-1250 deg.c for 1-3 h; setting active carbon as reducer; fetching the reactor out of furnace; cooling in the air to produce almost white product; luminating the product through 254 nm ultraviolet lamp to see green long persistence phosphor; displaying the best effect when the doping quantity of Mn2+ is at 0.2-0.3 percent and color coordination of x is 0.0875 and y is 0.6083.

A wind-energy long afterglow luminescence device comprises a casing (1), a wind power mechanical structure (2), a power generation device (3), LED luminous bodies (4) and a long afterglow luminous body (5); the power generation device (3) is connected with the wind power mechanical structure (2) and the LED luminous bodies (4) via lines respectively; and the wind power mechanical structure (2), driven by wind power, enables that the power generation device (3) drives the LED luminous bodies (4) to emit light and excites the long afterglow luminous body (5) to emit light. Power is used once being generated, the power transmission loss and using cost are reduced, the problem that a common wind energy luminescence device is hard to emit light continuously with minimal brightness without routine power supply or under a power off condition is solved, uninterrupted light emission is realized, and the minimal brightens of afterglow luminescence is improved greatly compared with a traditionallong afterglow luminescence; and a speed change mechanism can be used to improve the wind power generation efficiency further, a photovoltaic device can be combined, and wind and photovoltaic hybrid power supply is used to improve the safety of light emission.

The invention discloses a polrvinyl chloride / strontium europium aluminate photoluminescence sheet, belongs to luminous materials, and in particular relates to a rare-earth macromolecule photoluminescence materials. The polrvinyl chloride / strontium europium aluminate photoluminescence sheet comprises the following components in percentage by weight: 84 to 86 of polrvinyl chloride resin, 4 to 8 of strontium europium aluminate luminous powder and 7 to 10 of auxiliary material. The invention provides the polrvinyl chloride / strontium europium aluminate photoluminescence sheet which has the advantages of easy processing, lower cost and stable performance and a processing method thereof, which solve the problem of difficult processing shaping, high price and the like of inorganic materials and low stability of rare-earth organic micromolecule coordination compounds. The sheet has high afterglow luminance, the initial luminance is more than 2,000mcd / m<2>, and the initial luminance is more than 200mcd / m<2> for 10 minutes, more than 50mcd / m<2> for 60 minutes and 20mcd / m<2> for 120 minutes, and the afterglow time is long, which is over 12 hours. The polrvinyl chloride / strontium europium aluminate photoluminescence sheet is applied to concealed lighting and emergency lighting, and meter panels of passenger vehicles and freight vehicles for aviation, voyage and land, building decoration and plates of roads, docks, common facilities, paths and dangerous label marks.

The invention discloses a self-luminous coating for a tunnel. The self-luminous coating is prepared from the following components in parts by weight: 10 to 20 parts of resin emulsion, 15 to 30 parts of glass beads, 20 to 30 parts of cement, 3 to 8 parts of nano-scale rare earth luminescent material, 1 to 3 parts of mixture of graphene and expanded graphite, 0.5 to 2 parts of K resin and 0.1 to 1 part of polyethylene resin, wherein the nano-scale rare earth luminescent material is a nanosheet, a nanowire or a nanorod. The self-luminous coating disclosed by the invention has the advantages of high after-glow brightness, long duration time under the dark condition and lower attenuation speed; a marking produced by using the self-luminous coating is high in inductivity.

The invention belongs to the technical field of coatings, and discloses a coating. The coating is prepared from conventional coating ingredients and yellow long-afterglow fluorescent powder. The yellow long-afterglow fluorescent powder is evenly distributed in the conventional coating ingredients, and the adding amount of the yellow long-afterglow fluorescent powder is 1% to 30%; the chemical-composition general formula of the yellow long-afterglow fluorescent powder is Sr5-x-ySiB2O10:xEu2+,yRe3+, wherein Re is a combination of one or more of Dy, Gd and La, x is larger than or equal to 0.01 and smaller than or equal to 0.05, and y is larger than or equal to 0.01 and smaller than or equal to 0.10. The long-afterglow coating is used for coating various marks, and the effect of safe displaying or night indicating can be achieved.

The invention provides an epoxy long-afterglow fluorescent anti-skid adhesive and a preparation method of the epoxy long-afterglow fluorescent anti-skid adhesive. The fluorescent antiskid adhesive comprises a component A and a component B, the component A comprises epoxy resin, a long afterglow material and a filler, the component B comprises an epoxy resin curing agent, and the long afterglow material is obtained by mixing a rare earth silicate-based long afterglow material and a rare earth aluminate-based long afterglow material according to the weight ratio of 1: 3-3: 1. The fluorescent anti-skid adhesive provided by the invention overcomes the problem of poor water resistance of a rare earth aluminate-based long afterglow material, and has the advantages of very good stability, very good fluorescent effect, high afterglow brightness and long lasting time.

The invention provides an energy-saving high-supportability LED long-afterglow device luminescent system, comprising a direct power supply (1), an energy storage power supply (2), a switching power supply controller (3), a driving control circuit (4), a control module (5), an LED long-afterglow luminescent device (6) and a charge-discharge control circuit (7) which are connected together through circuits according to needs. The system not only has a luminescent function of a conventional LED but also has a luminescent function of a long-afterglow material. An aim of saving energy is achieved by virtue of intermittent power supply for the LED long-afterglow luminescent device (6); and by performing grading detection on the capacity of the energy storage power supply (2) and adopting a corresponding period and duty ratio or power to supply power to the LED long-afterglow luminescent device (6), the luminescent time delay of the luminescent system and the afterglow brightness of the long-afterglow material are improved to the utmost extent, so that the luminescent supportability can be improved, and specifically, the luminescent system has unique advantages especially in military application.

The invention discloses a luminous pavement and a construction method thereof. The luminous pavement comprises a foundation layer, wherein the foundation layer is a concrete layer, an asphalt layer, astone layer or a floor tile layer; irregular fluorescence resin particles cover the foundation layer through bonding agents; the fluorescence resin particles are green particles giving out green fluorescence, and are concretely prepared from the following ingredients in parts by weight: 0.015 to 6g of green pigments, 5.04 to 126g of opening agents, 3.75 to 1,500g of 168 antioxidants, 2.25 to 900gof UV531 anti-ultraviolet agents, 0.275 to 16.5g of special yellow and green self luminous fluorescent materials and 8,558 to 72,365g of TPU / PP / PVC / AS / ABS / PC / PMMA resin. The soft light given out by the luminous pavement provided by the invention is not glaring; the gradually serious pollution of strong lamp light is effectively reduced; the adverse influence generated in the urban life of peoplecan be avoided; the fluorescent resin particle material is used on the surface of the luminous pavement; construction depth can be generated between the particles; the slippage phenomenon can be reduced, so that the occurrence of accidents can be reduced; certain help is realized on the safe traveling of people.

The invention provides transparent long-afterglow glass ceramics and a preparation method thereof. The structural of the glass ceramics has the characteristic that SrAl2O4:Eu,Dy long-afterglow crystallite is embedded in an oxide glass matrix, wherein the glass in the glass ceramics comprises the components: 40-80 mol% of P2O5+SiO2, 3-15 mol% of BaO+SrO+CaO, 5-20 mol% of ZnO+Al2O3+La2O3, 5-15 mol%of Na2O+Li2O and 5-20 mol% of B2O3+Bi2O3+Sb2O3, the sum of the content of the components is 100 mol%, and the content of the SrAl2O4: Eu,Dy crystallite is 1-15% of the oxide glass matrix by weight. The long-afterglow glass ceramics has the characteristics of high transparency, stable physical and chemical properties, high afterglow brightness and a long service life, and can be used as a long afterglow material in solar cells, building escape signs, road traffic indications, handicrafts and other fields.

The invention discloses a preparation process of a luminescent ceramic tile and the luminescent ceramic tile. The preparation process comprises the following specific steps: S1) preparing luminescent powder; S2) preparing sodium silicate sol; S3) adding the luminescent powder into the sol while stirring, further performing stirring uniformly, and performing drying to obtain luminescent powder sol particles; S4) preparing a glaze material: uniformly mixing the glaze and the luminescent powder sol particles in proportion, and then applying the mixture on the surface of a ceramic tile green body to obtain a luminescent green body layer; S5) applying glaze powder on the surface of the luminous green body layer, and putting the luminous green body layer into a press for compression molding to obtain a green body; S6) putting the polished green body into a kiln for firing, preserving heat, and then cooling along with the furnace to obtain the luminous ceramic tile. And the particle size D50 of the luminescent powder sol particles is 5-8.5 microns. The invention further provides the luminous ceramic tile prepared by the preparation process of the luminous ceramic tile, and the prepared luminous ceramic tile is good in luminous intensity and long in afterglow time.

The invention discloses silicate-based multi-color long-afterglow luminescent materials and a preparation method thereof. The silicate-based multi-color long-afterglow luminescent materials have the chemical structural expression of Ca3-x-ySiO7:xCe<3+>,yM, wherein x is the doping amount of Ce<3+>, y is the doping amount of M, M is Tb<3+> or Mn<2+>, 0<x<=0.1, and 0<=y<=0.3; H3BO3 with the mass fraction of 5-10% is used as a fluxing agent. The preparation method comprises the steps: synthesizing by adopting a high temperature solid state method in a reducing atmosphere; accurately weighing the raw materials according to the stoichiometric ratio, then mixing and grinding evenly, pre-sintering in air, then grinding again, calcining under a high-temperature reducing atmosphere, and when naturally cooling to the room temperature, grinding to obtain the multi-color long-afterglow luminescent materials. Different samples are excited by ultraviolet light, and the samples emit bright afterglow with different colors. The silicate-based multi-color long-afterglow luminescent materials have the advantages that the silicate-based multi-color long-afterglow luminescent materials have the advantages of no radioactivity, high brightness, good stability, and longer afterglow time; multi-color long afterglow is achieved in a single matrix, the raw materials are cheap and easy to get, and the preparation method is simple and practicable and is suitable for large-scale production.

The invention provides a long-afterglow luminescent material. The long-afterglow luminescent material is shown as a chemical formula (I): K1-x-y-z-a-bLiaNabGa1-cAlcGe1-dSidO4:xBi<3+>, yM<2+>, zR<3+>, wherein M refers to one or more of Mg, Ca, Sr, Ba and Zn, R refers to one or more of Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, x is not less than 0.0001 and not more than 0.20, y is not less than 0 and not more than 0.20, z is not less than 0 and not more than 0.20, a is not less than 0 and not more than 0.20, b is not less than 0 and not more than 0.20, c is not less than 0 and not more than 0.20, and d is not less than 0 and not more than 0.20. The long-afterglow luminescent material has the advantages that Bi<3+> ions are taken as activation ions and can be activated effectively by ultraviolet light to produce cyan-blue adjustable long afterglow, so that after-glow brightness is high and after-glow lasting time is long.

The invention belongs to the field of printing ink. Printing ink is characterized by containing conventional printing ink components and red long afterglow fluorescent powder, wherein the red long afterglow fluorescent powder is uniformly distributed in the conventional printing ink components, and the addition amount of the red long afterglow fluorescent powder is 1%-30%; and the chemical constitution general formula of the red long afterglow fluorescent powder is Sr<3-x-y>SiAlO5Cl3:xEu<2+>,yRe<3+>, wherein Re represents one or combination of Dy, Gd and Nd, and the value ranges of x and y areas follows: x is more than or equal to 0.01 and less than or equal to 0.05, and y is more than or equal to 0.01 and less than or equal to 0.10. An Eu<2+> ion is located in the luminescent center of the fluorescent powder, and a long afterglow effect can be enhanced effectively by introducing rare earth impurity ions such as Dy<3+>, Gd<3+> and Nd<3+>. The printing ink provided by the invention ishigh in afterglow brightness and long in afterglow time and can be applied to the fields of advertising, safety indication and the like.

The invention provides a color-adjustable long-afterglow material. The long-afterglow material has the chemical formula shown in formula I: CaxSr(1-x)GayAl(4-y)O7:zMn<2+>, wherein x is larger than orequal to 0 and smaller than or equal to 1, y is larger than or equal to 0 and smaller than or equal to 4, and z is larger than 0 and smaller than or equal to 0.04. The long-afterglow material can realize color adjustment finally by changing part of components of single doping ions in single matrix. The long-afterglow material has higher afterglow brightness and long afterglow time. Afterglow in various colors can be obtained through blending of the matrix while doping elements are not changed in the experiment. Meanwhile, a preparation method of the long-afterglow material is simple, raw materials are cheap and easy to obtain, and the stability of the material is good. The invention also provides the preparation method of the color-adjustable long-afterglow material.

A phosphorescent phosphor having a high afterglow luminance is provided. The phosphorescent phosphor comprises, as a matrix, a compound represented by MAl2O4, the metal element represented by M comprising Sr, Mg and Ba, and the phosphorescent phosphor containing, Eu as an activator, and Dy as a co-activator, wherein the content of Eu, in terms of molar ratio, is 0.001≤Eu / (M+Eu+Dy)≤0.05; the content of Dy, in terms of molar ratio, is 0.004≤Dy / (M+Eu+Dy)≤0.06; the content of Mg, in terms of molar ratio, is 0.02≤Mg / (M+Eu+Dy)≤0.1; the content of Ba, in terms of molar ratio, is 0.03≤Ba / (M+Eu+Dy)≤0.15; and the phosphorescent phosphor contains at least one alkali metal element of the group consisting of Li, Na, K and rubidium (Rb). Mg and Ba as well as the alkali metal element(s) contained in the phosphorescent phosphor provide an excellent phosphorescent phosphor having a high afterglow luminance.

A lighting system for LED long afterglow devices, including a direct power supply (1), an energy storage power supply (2), a switching power supply controller (3), a drive control circuit (4), a control module (5), and an LED long afterglow light emitting device (6) The charge and discharge control circuit (7) is connected through lines as required; it has both the light-emitting function of a conventional LED and the light-emitting function of a long afterglow material. The purpose of energy saving is achieved by intermittently supplying power to the LED long afterglow light emitting device (6); by classifying and detecting the capacity of the energy storage power supply (2) and adopting the corresponding cycle and duty ratio or power to the LED long afterglow light emitting device (6) ) power supply, which maximizes the luminous delay of the luminous system and the afterglow brightness of the long afterglow material, thereby improving the luminous security, especially in military applications.

The invention provides an epoxy-based long-lasting fluorescent anti-slip adhesive and a preparation method thereof. The fluorescent anti-slip adhesive includes components A and B, and the component A includes epoxy resin, long-lasting materials and fillers. The B component includes an epoxy resin curing agent, wherein the long afterglow material is obtained by mixing a rare earth silicate based long afterglow material and a rare earth aluminate based long afterglow material in a weight ratio of 1:3 to 3:1. The fluorescent anti-slip adhesive of the invention overcomes the problem of poor water resistance of rare earth aluminate-based long-lasting materials, has good stability, has good fluorescent effect, and has high afterglow brightness and long duration.

The invention discloses a luminous pavement and a construction method thereof. The luminous pavement comprises a foundation layer, wherein the foundation layer is a concrete layer, an asphalt layer, astone layer or a floor tile layer; irregular fluorescence resin particles cover the foundation layer through bonding agents; the fluorescence resin particles are green particles giving out green fluorescence, and are concretely prepared from the following ingredients in parts by weight: 0.015 to 6g of green pigments, 5.04 to 126g of opening agents, 3.75 to 1,500g of 168 antioxidants, 2.25 to 900gof UV531 anti-ultraviolet agents, 0.275 to 16.5g of special yellow and green self luminous fluorescent materials and 8,558 to 72,365g of TPU / PP / PVC / AS / ABS / PC / PMMA resin. The soft light given out by the luminous pavement provided by the invention is not glaring; the gradually serious pollution of strong lamp light is effectively reduced; the adverse influence generated in the urban life of peoplecan be avoided; the fluorescent resin particle material is used on the surface of the luminous pavement; construction depth can be generated between the particles; the slippage phenomenon can be reduced, so that the occurrence of accidents can be reduced; certain help is realized on the safe traveling of people.

The invention discloses green long-persistence fluorescent powder and a preparation method thereof, provides a fluorescent powder material having green long-persistence fluorescent performance, whichbelong to the technical field of the fluorescent powder. A chemical composition general formula of the fluorescent powder is Ba3-x-ySiAl2O8:xEu<2+>,yRe<3+>, wherein Re is one or combination of Tm, Gdand Nd, value ranges of x and y are characterized in that x is greater than or equal to 0.01 and less than or equal to 0.05, and y is greater than or equal to 0.01 or less than or equal to 0.10. A luminescence center of the fluorescent powder is Eu<2+> ion, and the long-persistence effect can be effectively enhanced by introducing the rare earth impurities ions such as Tm<3+>, Gd<3+> and Nd<3+>. The green long-persistence fluorescent powder has the characteristics of good chemical stability, high afterglow brightness, and long afterglow time, and can be used in the fields of safety fire control and emergency lighting indication.

The invention provides a transparent long-lasting glass-ceramic and a preparation method thereof. The structural feature of the glass-ceramic is that SrAl is inlaid in an oxide glass matrix. 2 o 4 : Eu, Dy long afterglow crystallite, the glass component content in the glass ceramics is: P 2 o 5 +SiO2 2 :40‑80mol%; BaO+SrO+CaO: 3‑15mol%; ZnO+Al 2 o 3 +La 2 o 3 :5-20mol%; Na 2 O+Li 2 O: 5‑15mol%; B 2 o 3 +Bi 2 o 3 +Sb 2 o 3 : 5‑20mol%; the sum of the contents of the above-mentioned components is 100mol%; SrAl 2 o 4 : The content of Eu and Dy crystallites is 1-15wt% of the oxide glass matrix. The long-afterglow glass-ceramic of the present invention has the characteristics of high transparency, stable physical and chemical properties, high afterglow brightness and long life, and can be used as a long-afterglow material in the fields of solar cells, building escape signs, road traffic instructions, handicrafts and the like.

The invention discloses a method for manufacturing polrvinyl chloride / europium-doped strontium aluminate photoluminescent sheets, belongs to a luminous material, and in particular relates to rare earth polymer photoluminiscent material. The method comprises the following steps of: 1, preparing the following raw materials in percentage by weight: 84 to 86 percent of polrvinyl chloride resin, 4 to 8 percent of europium-doped strontium aluminate luminescent powder, and 7 to 10 percent of auxiliary material; 2, mixing; 3, extruding; and 4, rolling and stripping. The invention provides a method for manufacturing polrvinyl chloride / europium-doped strontium aluminate photoluminescent sheets which have the advantages of easy processing, lower cost and stable performance, and solves the problems of difficult processing and forming, high price and the like of inorganic materials and problems of low stability of rare-earth organic micromolecular ligands. The sheets have high after-glow brightness, the initial brightness of more than 2,000mcd / m<2>, the brightness after 10 minutes of more than 200mcd / m<2>, the brightness after 60 minutes of more than 50mcd / m<2>, and the brightness after 120 minutes of more than 20mcd / m<2>, and have long after-glow time of more than 12 hours.

The present invention provides a long afterglow luminescent material, the chemical formula of which is shown in formula (I): K1-x-y-z-a-bLiaNabGa1-cAlcGe1-dSidO4: xBi3+, yM2+, zR3+, formula (I); formula ( In I), M is one or more of Mg, Ca, Sr, Ba and Zn; R is Sc, Y, La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm One or more of , Yb and Lu; 0.0001≤x≤0.20, 0≤y≤0.20, 0≤z≤0.20, 0≤a≤0.20, 0≤b≤0.20, 0≤c≤0.20, 0≤ d≤0.20. The long afterglow luminescent material provided by the present invention uses Bi3+ ions as active ions, which can be effectively excited by ultraviolet light to produce cyan-blue color with adjustable long afterglow, high afterglow brightness and long time.

The invention discloses a polrvinyl chloride / strontium europium aluminate photoluminescence sheet, belongs to luminous materials, and in particular relates to a rare-earth macromolecule photoluminescence materials. The polrvinyl chloride / strontium europium aluminate photoluminescence sheet comprises the following components in percentage by weight: 84 to 86 of polrvinyl chloride resin, 4 to 8 of strontium europium aluminate luminous powder and 7 to 10 of auxiliary material. The invention provides the polrvinyl chloride / strontium europium aluminate photoluminescence sheet which has the advantages of easy processing, lower cost and stable performance and a processing method thereof, which solve the problem of difficult processing shaping, high price and the like of inorganic materials and low stability of rare-earth organic micromolecule coordination compounds. The sheet has high afterglow luminance, the initial luminance is more than 2,000mcd / m<2>, and the initial luminance is more than 200mcd / m<2> for 10 minutes, more than 50mcd / m<2> for 60 minutes and 20mcd / m<2> for 120 minutes, and the afterglow time is long, which is over 12 hours. The polrvinyl chloride / strontium europium aluminate photoluminescence sheet is applied to concealed lighting and emergency lighting, and meter panels of passenger vehicles and freight vehicles for aviation, voyage and land, building decoration and plates of roads, docks, common facilities, paths and dangerous label marks.

The present invention provides super fine grain size high light efficiency long lad fluorescent powder. The chemical structural formula of the fluorescent powder is Srm-pMepAl2O(3+m+q):Eux, Dyy, Rz, wherein Me is at least one of Ba and Mg; R is at least one of La and Gd; m is more than 1 and less than or equal to 0.3; p is more than or equal to 0.006 and less than 0.3; q is equal to x plus y plus z; x is more than or equal to 0.005 and less than or equal to 0.05; and z is more than or equal to 0.0001 and less than or equal to 0.01. The preparation method comprises the following steps: 1) by taking the chemical structural formula of target products as a measuring base, oxides of Sr, Ba, Mg, Eu, Dy, La and Gd and nitrate or carbonate are picked up as raw materials; 2) the raw materials are added with reaction auxiliary agent; 3) the mixed materials are placed in a high-temperature reducing atmosphere furnace, and subjected to high-temperature synthesis under the protection of N2H2 mixed gas; 4)the sintered fluorescent powder blocks are crushed to obtain super fine grain size long lad fluorescent powder; and 5) the crushed fluorescent powder is subjected to after treatment to obtain the finished product. The fluorescent powder has the advantages of super fine grain size and centralized distribution and higher brightness and longer afterglow time, and can be better applied to fields such as luminescent fiber, printing, coating material.