621results about "Luminescent paints" patented technology

The invention discloses an MXene-based coating with a near-infrared light induction interaction effect and a preparation method of the MXene-based coating, and relates to the technical field of coatings. The preparation method comprises the following steps: a nano microcapsule and MXene powder are subjected to in-situ growth to form a composite dispersion liquid, the nano microcapsule is of a core-shell structure, a shell layer material is selected from at least one of polyaniline, polyurea, polyurethane, polyacrylate and silicon dioxide, a core contains a functional substance, and the surface of the core contains a porous material. The functional substances are selected from at least two of a corrosion inhibitor, a fluorescent indicator and a lubricant; adding a thermal reversible coating containing dynamic covalent bonds and a curing agent into the composite dispersion liquid, and uniformly mixing to form a homogeneous coating; and spraying the homogeneous coating on the surface of a base material, and curing to obtain the coating. The coating is high in mechanical strength, has a near-infrared light triggered self-repairing function, is high in self-repairing rate, and can realize multiple functions such as fluorescence labeling, corrosion early warning and lubrication coordinated regulation and control.

Provided by the present invention is a polycyclic aromatic compound represented by formula (1), or a polymer thereof. The compound according to the present invention can be used in an organic device such as an organic EL element. (In formula (1), rings A, B and C are optionally substituted aryl rings or heteroaryl rings, at least one ring selected from the group consisting of ring A, ring B, and ring C is a condensed ring formed from two or more rings selected from the group consisting of an aryl ring, a heteroaryl ring, and a cyclopentadiene ring, Y1 is B or the like, X1 and X2 are >N-R (R being an aryl or the like), rings A, B, C, etc. can be condensed by a cycloalkane or the like, and the hydrogen in formula (1) can be substituted by deuterium, cyano or halogen.)

The invention discloses a high-reliability PbS quantum dot film, a preparation method thereof and a photoelectric device. The preparation method comprises the following steps: 1) obtaining a first quantum dot solution; 2) adding medium-chain and long-chain amine; 3) adding an anti-solvent; 4) obtaining medium-chain and long-chain amine modified PbS quantum dot solids; 5) obtaining a second quantum dot solution; (6) forming a PbS quantum dot coating; 7) forming a mercaptan solution; 8) coating the PbS quantum dot coating with a mercaptan solution; (9) annealing treatment; 10) forming a new PbS quantum dot coating, and coating the new PbS quantum dot coating with a mercaptan solution; according to the PbS quantum dot thin film and the preparation method thereof, through the induction and synergistic effect of halogen atoms, the binding capacity of halogenated mercaptan ligands and the surface of the PbS quantum dot thin film is enhanced, the surface defect state of the PbS quantum dots is effectively inhibited, and the reliability of the PbS quantum dot thin film and a photoelectric device under the conditions of high temperature, high humidity and long-time illumination is remarkably improved.

The invention discloses a coated reflecting film based on an organic fluorescent coating and a preparation method of the coated reflecting film, tetra (4-aminophenyl) methane and tetra-(4-formyl-(1, 1-biphenyl)) ethylene are used as reaction monomers to prepare a novel topological structure [4 + 4] COF (3D-TPE-COF) with a tetraphenylethylene (TPE) unit, and the novel topological structure [4 + 4] COF (3D-TPE-COF) is used for preparing the reflective film based on the organic fluorescent coating. The covalent organic framework material 3D-TPE-COF is added into coating liquid as a fluorescent material to prepare a coating reflecting film based on an organic fluorescent coating, and the obtained reflecting film can convert high-energy blue light, so that the brightness of light emitted by a backlight module is higher and closer to white; meanwhile, the 3D-TPE-COF fluorescent material and the polymer particles can form hydrogen bonds in the coating liquid to avoid aggregation of the polymer particles, so that the wear resistance and scratch resistance of the coating reflecting film are improved.

A dual-modal information storage and anti-counterfeiting material, and its preparation method are provided. The dual-modal information storage and anti-counterfeiting material uses cadmium sulfide quantum dots (CdS QDs) as information storage material, and uses the controllable photocorrosion of CdS QDs to achieve dual-modal optical information storage and anti-counterfeiting applications. Firstly, the type of ligands and modification degree of CdS QDs are precisely controlled during the aqueous phase synthesise process, so as to effectively control the photocorrosion phenomenon under UV light irradiation. Subsequently, the CdS QDs are loaded in the hydrogel network, and they are also loaded on the substrates such as cloth and paper by spray coating, dip coating or 3D printing, and the information is stored by digital light patterning. Different from the photochromic function of traditional anti-counterfeiting material, the CdS QDs shows dual-modal patterning characteristics in a wide wavelength range.

According to the preparation method of the radiation refrigeration colored coating with the double-layer structure, absorption of ultraviolet-visible light and near-infrared wave bands is weakened and heat input is reduced by adding a fluorescent coloring agent and designing a bottom strong reflection layer, meanwhile, high-emissivity varnish is selected as a base material, and the radiation refrigeration colored coating with the double-layer structure is prepared. The capability of emitting heat outwards in a middle and far infrared radiation form of the colored paint is improved, so that efficient cooling is realized. The prepared colored paint has rich and adjustable colors and a good cooling effect, is low in cost and simple in process, and is expected to be applied to the fields of high-power electronic equipment, building heat management and the like.

The invention discloses an anti-crack wear-resistant reflective enhanced hot-melt marking coating and a preparation method thereof. The marking coating comprises the following components: a film-forming substance, EVA (Ethylene Vinyl Acetate), titanium dioxide, glass beads, a filler, polyethylene wax, an anti-ultraviolet aging agent, anti-crack reinforced fibers, a wear-resistant reinforced material and white oil. The preparation method of the marking paint comprises the step of uniformly mixing the components to obtain the product. According to the anti-crack wear-resistant reflective enhanced hot-melt marking coating and the preparation method thereof, the problems that a hot-melt marking is cracked, is not wear-resistant, is not lasting in light reflection and the like are solved.

The invention discloses a corrosion-resistant stainless steel pipe and a preparation method thereof, and application of the pipe in marine engineering, and belongs to the technical field of stainless steel materials, and is used to solve the technical problem that the corrosion resistance and antifouling performance of stainless steel in the prior art need to be improved; wherein the preparation method of the corrosion-resistant stainless steel pipe comprises: adding epoxy-modified titanium dioxide and 2-aminoethyl methacrylate to anhydrous ethanol, stirring, adding hydrochloric acid aqueous solution, heating, reacting, and obtaining modified titanium dioxide; adding epoxy-modified carbon quantum dots and modified titanium dioxide to the hydrochloric acid aqueous solution, heating, reacting, and ending the reaction, filtering, washing, and drying to obtain epoxy-modified carbon quantum dot grafted modified titanium dioxide; the corrosion-resistant stainless steel pipe prepared by the invention not only has good corrosion resistance and antifouling performance, meets the application of the pipe in marine engineering, but also has good weather resistance and durability, is conducive to prolonging the service life, and reduces the cost of later maintenance.

The invention discloses an ink-uniformizing jet printing process for a battery UV insulating coating, which comprises the following steps: adding a first fluorescent marker and a second fluorescent marker in a UV coating material, the two fluorescent markers being capable of performing fluorescence resonance energy transfer to obtain a marked UV coating material; carrying out multi-position spectral characteristic acquisition on the micro-droplets formed by the UV coating material; dynamically tracking the spreading process of the micro-droplets; exciting the coating in the curing process by adopting multi-wavelength exciting light to obtain cross-linking degree distribution data; and carrying out thermoacoustic scanning on the coating. According to the technical scheme, real-time monitoring of cross-linking degree distribution in the curing process of the UV insulating coating can be achieved, the problem of non-uniform cross-linking of the coating can be found in time by monitoring the whole process of micro-droplet formation, spreading and curing in combination with fluorescence spectrum analysis and thermoacoustic detection technologies, and the quality of the coating is improved. And an effective quality control means is provided for ensuring the long-term reliability of the battery insulating coating.

The invention discloses a preparation method of an ultra-infiltration nano coating, and relates to the field of ultra-infiltration nano coatings, and the preparation method comprises the following steps: S1, base material pretreatment, S2, nano material dispersion liquid preparation, S3, coating: adopting an impregnation method, a spraying method or a spin-coating method to attach the nano material dispersion liquid prepared in the step S2 to the surface of the base material pretreated in the step S1, and S4, low-temperature curing to obtain the ultra-infiltration nano coating. And S5, surface modification: carrying out hydrophobic modification or hydrophilic modification on the base material subjected to low-temperature curing in the step S4 according to the type of the base material. The effect of enhancing the adhesive force of the base material and the coating is achieved through the means of pretreating the base material, it is ensured that nano particles of the dispersion liquid are always uniformly dispersed through preparation of the nano material dispersion liquid and the coating, coating is conducted through proper methods such as dipping, spraying and spin coating, and then low-temperature curing is conducted; the effect of constructing a stable porous nano-structure coating with excellent performance is achieved, and meanwhile, different requirements are met through multiple coating modes.

The invention discloses an optical stealth color radiation refrigeration coating as well as a preparation method and application thereof, and relates to the technical field of optical stealth materials. The coating is prepared from the following raw materials in percentage by mass: 30 to 50 percent of nano-particles wrapped by fluorescent silicon dioxide shells, 30 to 35 percent of polydimethylsiloxane, 5 to 10 percent of auxiliaries and 30 to 40 percent of ethyl acetate, wherein the sum of the mass percent of all the components is 100 percent; according to the invention, the organic fluorescent dye is doped in the mesoporous silica and is coated with the silica shell, so that not only is the fluorescence aggregation quenching effect of the organic dye avoided and the maximum fluorescence intensity of the dye improved, but also the silica shell layer at the outer layer also plays a role of a protective layer; oxidation of ultraviolet rays, solvents and oxygen to the dye is shielded, and the light stability of the dye is improved.

The invention discloses a dental plaque display type anti-caries invisible appliance based on synergism of iron-based nano-enzyme catalysis and traditional Chinese medicine caries inhibition, and belongs to the field of oral medical instruments. The preparation method of the appliance diaphragm comprises the following steps: preparing a composite material with the functions of catalytically degrading a bacterial biofilm matrix barrier and killing internal bacteria from polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol (PETG) and a Fe3O4 nano-enzyme filler in a solution blending manner; and after the composite material is subjected to thermoplastic molding, a layer of molecularly imprinted polymer (MIP)-spiropyrane and chitosan-magnolol are coated with the fluorescent display agent which is prepared by mixing the molecularly imprinted polymer (MIP)-spiropyrane and the chitosan-magnolol. The iron-based nano-enzyme can catalytically degrade a bacterial biofilm matrix barrier and kill internal bacteria, and the MIP-spiropyrane fluorescent display agent can specifically display the accumulation condition of cariogenic bacterial plaque in the oral cavity under ultraviolet irradiation. The invisible orthodontic appliance can reduce or prevent caries while having the same orthodontic effect as other orthodontic appliances in the market.

The invention discloses an OMTD photoelectric mapping transparent display film with adjustable light transmittance and a preparation method, and belongs to the technical field of transparent display films. The transparent display film comprises an electric control dimming film layer, a fluorescent layer, an adhesive layer and a release material layer, wherein the fluorescent layer comprises the following raw materials in parts by weight: 80-100 parts of polyurethane resin, 2-5 parts of a fluorescent agent, 3-6 parts of a dispersing agent, 4-8 parts of a modified anti-aging agent, 1-10 parts of a curing agent and 200 parts of a solvent; according to the invention, p-phenylenediamine and 4-(diethylamino) salicylaldehyde react to prepare a fluorescent small molecule substance, and then the fluorescent small molecule substance is introduced into a polyurethane chain to finally prepare the fluorescent agent. The prepared transparent display film has excellent fluorescence performance, transparency and anti-aging performance.

The invention discloses preparation of a nitrogen-containing seven-membered fluorine-boron compound and application of the nitrogen-containing seven-membered fluorine-boron compound to a fluorescent anti-counterfeiting film, the structure of the compound is as follows: # imgabs0, the dye takes 2, 3, 3-trimethylindole and dibromo-2-pyrrolecarboxaldehyde as raw materials, under the action of acetic acid, piperidine and methylbenzene, a Knoevenagel condensation reaction is carried out, and the dibromo seven-membered fluorine-boron fluorescent dye is generated. The dibromo seven-membered fluorine boron fluorescent dye respectively reacts with phenylboronic acid, 4-cyanophenylboronic acid, p-methoxyphenylboronic acid and triphenylamine phenylboronic acid to obtain a final compound. The compound can act with acrylic resin to form a film on a thin film, and can be colored under natural light, and clear fluorescence can be seen under an ultraviolet lamp (365nm). The fluorescent dye is simple, easy to obtain, low in manufacturing cost, high in film forming speed with acrylic resin or a polyvinyl alcohol solution on a thin film, high in anti-counterfeiting coefficient, large in counterfeiting difficulty and huge in potential in the aspects of fluorescent anti-counterfeiting packaging films, OLDE and the like.

A quantum dot includes: a nanoparticle; and a ligand represented by Formula 1 on a surface of the nanoparticle:A1 is an anchoring group linked to the surface of the nanoparticle, and A1 may be selected from groups represented by Formulae A-1 to A-4:wherein * in Formulae A-1 to A-4 indicates a binding site to a neighboring atom.

The invention discloses a two-component photoinduced energy storage diffuse reflection nano coating as well as a preparation method and application thereof, and belongs to the technical field of building materials. Comprising prime paint and surface paint, the prime paint comprises 45-55 parts of paint emulsion, 30-40 parts of titanium dioxide, 5-10 parts of precipitated barium sulphate powder, 5-10 parts of pearl powder, fumed silica, an anti-settling agent, a light stabilizer, a dispersing agent and a coalescing agent; the surface layer coating is prepared from 55 to 65 parts of coating emulsion, 20 to 30 parts of alkaline earth aluminate, 10 to 15 parts of hollow glass beads, 5 to 10 parts of pearl powder, an anti-settling agent, a light stabilizer, a dispersing agent and a coalescing agent; the coating emulsion comprises acrylic resin and epoxy acrylate; the coating disclosed by the invention has excellent photoinduced energy storage performance and a good diffuse reflection effect, and can meet illumination requirements in environments such as underground parking lots, underground commercial plazas, traffic tunnels, civil air defense projects or military underground facilities.

The invention belongs to the technical field of 3D printing and flexible high-hydrophobicity self-luminous life jackets, and particularly relates to a flexible high-hydrophobicity self-luminous life jacket and a preparation method thereof. A self-luminous waterborne polyurethane emulsion of a hydrophobic modified energy-storage long-afterglow luminescent material is synthesized, the prepared self-luminous waterborne polyurethane emulsion is used for coating and post-processing a thermoplastic polyurethane elastomer (TPU) flexible life jacket part formed by SLS, and a luminous coating permeates into micro-gaps in the surface of the TPU part and is attached to the surface. And a firmly attached self-luminous coating is formed after curing, so that the hydrophobic property of the TPU life jacket product is obviously improved, and the self-luminous function in a dim and dark environment is also realized. The problems that a traditional fluorescent material is low in luminous intensity, incapable of continuously emitting light, poor in water resistance and the like are solved, and excellent high-hydrophobicity self-luminous performance is obtained on the premise that the original SLS forming process characteristics of the TPU life jacket are not changed and the mechanical property of the TPU life jacket is reserved.

The invention provides an anticorrosive paint, a preparation method thereof, an anticorrosive coating and application. The provided anticorrosive paint comprises a polymer matrix containing reversible chemical bonds and microcapsules dispersed in the polymer matrix. The microcapsule comprises a core material and a capsule wall coating the core material, and the core material comprises a fluorescent dye; the reversible chemical bond in the polymer matrix is one or more of Diels-Alder bond, disulfide bond and hydrogen bond. The anti-corrosion coating prepared from the anti-corrosion paint can realize damage early warning and repair tracking.

The present invention relates to the technical field of inorganic multi-color coatings, and specifically relates to a preparation method and apparatus for an inorganic multi-color coating, and a use. The preparation method comprises the following raw materials: base paint: water, cellulose, a defoaming agent, a dispersing agent, a wetting agent, a luminescent material, an inorganic hybrid emulsion, an odorless pH regulator, and a bactericide; granulation liquid: water, a bactericide, xanthan gum, protective colloid powder, an odorless pH regulator, nanocellulose, and a defoaming agent; and a continuous phase emulsion: an inorganic hybrid emulsion, a bactericide, inorganic gel, deionized water, an odorless pH regulator, a thickening agent, and a defoaming agent. In the present invention, a mixture of CaAl2O4 calcium aluminate and BaAlO4 barium aluminate is added to serve as a luminescent material, the luminescent material can absorb and store solar energy by means of a specific mode when exposed to sunlight during the daytime, and at night, the internally stored energy is converted into optical radiation to be released, thereby realizing a light-emitting effect and realizing the luminous function of the coating.

The invention provides a fluorescent antibacterial acrylic emulsion as well as a preparation method and application thereof. The fluorescent antibacterial acrylic emulsion comprises an acrylic monomer, AIE fluorescent micromolecules, an antibacterial quaternary ammonium salt monomer, a nonionic emulsifier, a cationic emulsifier, an initiator, a stabilizer and deionized water. The cosolvent of the water-based acrylic coating is water, no VOC (volatile organic compound) is discharged when the water-based acrylic coating is used, and harm to the environment and human bodies is reduced to the minimum; meanwhile, the antibacterial coating is prepared in a positive ion and ROS joint antibacterial mode, and the antibacterial effect is more excellent; and a convenient detection method for reflecting the change of the antibacterial property of the coating through the fluorescence change of the coating avoids the trouble of professional biological detection.

The invention relates to the technical field of functional coatings, in particular to a graphene reinforced heavy-duty epoxy coating for a marine environment. The invention discloses a graphene-based epoxy resin coating which is prepared from the following raw materials in parts by weight: 60-80 parts of bisphenol A epoxy resin, 5-10 parts of aminated graphene-carbon nanotube composite powder, 3-6 parts of zinc-aluminum-cerium ternary composite phosphate, 3-6 parts of nano boron nitride / silicon dioxide core-shell particles, 15-25 parts of a polyamide-epoxy curing agent, 1-3 parts of a silane coupling agent KH-560 and 5-8 parts of cashew nut shell oil modified phenolic aldehyde amine. The anti-rust paint is prepared from the following components in parts by weight: 0.5-2 parts of carboxylated graphene quantum dots, 2-4 parts of organic montmorillonite, 0.1-0.5 part of a fluorocarbon surfactant, 8-15 parts of a composite anti-rust pigment and 10-20 parts of an organic solvent. The coating is excellent in corrosion resistance, capable of resisting marine corrosion for a long time, resistant to high temperature and resistant to cathodic disbonding, has the functions of aging tracing and biological adhesion resistance, is convenient to construct and stable in performance, and provides reliable protection for ocean engineering.

The invention belongs to the technical field of tunnel lighting, and provides a tunnel intelligent lighting system based on self-luminous paint, which comprises an LED lamp fixed in a tunnel, the self-luminous paint, an environment monitoring module and a control terminal, the self-luminous paint is coated on the inner wall of the entrance of the tunnel, the environment monitoring module is fixed at the entrance of the tunnel, and the control terminal is connected with the LED lamp. And the control terminal is used for detecting the illumination intensity outside the tunnel, the meteorological data, the speed of the vehicle and the brightness of the self-luminous coating, is in communication connection with the environment detection module and the LED lamp, and adjusts the brightness of the LED lamp according to the meteorological data, the speed of the vehicle and the brightness of the self-luminous coating. The self-luminous coating and active LED lighting can be cooperatively controlled, the problems that a traditional system is poor in visual adaptation, high in energy consumption and low in reliability are solved, the LED light supplementing amount is dynamically adjusted according to environment illumination, meteorological conditions, the vehicle speed and the actual brightness of the coating, active and passive light source complementation and accurate dimming are achieved, and the black and white hole effect is effectively relieved.

The invention relates to the technical field of preparation of anti-counterfeiting films, and particularly discloses an ultraviolet fluorescent anti-counterfeiting film based on multi-layer optical variability and a preparation method of the ultraviolet fluorescent anti-counterfeiting film. The ultraviolet fluorescent anti-counterfeiting film based on multilayer optical variability comprises a film substrate layer, a first optical variability layer and a second optical variability layer, wherein the first optical variable layer and the second optical variable layer are located on the two sides of the thin film base material layer respectively; the first optical variable layer and the second optical variable layer respectively comprise rhodamine B, fluorescein sodium and europium oxide. According to the ultraviolet fluorescent anti-counterfeiting film, the first light-variable layer and the second light-variable layer which contain light-variable materials such as rhodamine B, fluorescein sodium and europium oxide are arranged on the two sides of the film base material layer, so that the prepared multi-layer light-variable ultraviolet fluorescent anti-counterfeiting film has relatively short ultraviolet radiation color change reaction time; wide application prospects are realized.

The invention discloses a preparation method of a bionic patterned biomass-based photoluminescence polyurethane coating for leather. The preparation method specifically comprises the following steps: step 1, preparing a zirconium hydrogen phosphate crosslinking body dispersion liquid; step 2, preparing a bionic patterned biomass-based photoluminescence polyurethane emulsion for leather according to a product obtained in the step 1; and step 3, preparing the bionic patterned biomass-based photoluminescence polyurethane coating for leather according to the product obtained in the step 2. The invention further discloses a bionic patterned biomass-based photoluminescence polyurethane coating for leather, and the prepared polyurethane coating has a better pattern display function and can be applied to leather finishing and anti-counterfeiting.

The invention discloses a fluorescent small molecule, a fluorescent polyurethane primer as well as a preparation method and application of the fluorescent small molecule. The structural formula of the fluorescent small molecule is as follows: # imgabs0 #. Fluorescent small molecules containing reactive hydrogen react with isocyanate, and a fluorescent chromophoric group is bonded into a polyurethane molecular chain, so that the fluorescent polyurethane primer is obtained. The primer has excellent bonding performance on glass and a polyurethane base material, has stable photoluminescence performance, and has a good application prospect in the aspect of automatic production of automobile glass edge covering products.

A doped pigment for application to an object can be used for measurement of thermal history of the object. In addition, a paint comprising a doped pigment and a doped binder, wherein the pigment and the binder have luminescent profiles which provide for resolution over first and second, different temperature ranges can be used for measurement of thermal history of the object. The pigment can be fabricated by a method which comprises the steps of gelling host precursors in a solvent to form a pigment gel; drying the pigment gel; and calcining the dried pigment gel; and the paint can be fabricated by fabricating a pigment by the above-described method; blending the pigment into water; and blending the blended pigment into a binder.

The invention discloses a preparation method of a recyclable electric sensing coating for defect detection. The preparation method is characterized by comprising the following steps: S1, preparing an electroluminescent unit EL; s2, preparing field coupling microspheres FCM based on an electroluminescent unit EL; and S3, preparing the recoverable electric sensing coating based on the field coupling microsphere FCM. The method has the advantages that electric field sensing and an environmental protection concept are successfully combined, and a low-cost, high-sensitivity and lossless polymer interface defect detection method is created. By visualizing the distribution of the electric field around the defect, the REC not only solves the bottleneck of the traditional technology in the aspects of detection precision, economy and environmental protection (recycling), but also provides a new way for realizing the fine management and maintenance of the material state, and has far-reaching significance for promoting the stable operation in the fields of electrical equipment and electronic equipment.

The invention provides a composite insulator electric field distortion detection method based on an electroluminescent effect, and the method comprises the steps: firstly, employing silicone rubber as a matrix material, optimizing a formula and a preparation technology, and preparing an electroluminescent composite coating material which is highly sensitive to electric field intensity and has excellent adhesiveness and environmental stability; secondly, the unmanned aerial vehicle is used for carrying a high-resolution camera, and comprehensive and clear insulator surface images are obtained in combination with the optimized route design; then, multivariable regression prediction is performed on image data through an algorithm, local and global characteristics of electric field distribution are accurately captured, and modeling errors are reduced. And finally, comparing an actually measured electric field distribution curve with a theoretical curve, analyzing electric field distortion, and diagnosing potential defects by using a feature matching technology. According to the invention, high detection accuracy can be maintained in different environments, the efficiency and precision of electric field distribution detection are greatly improved, and reliable technical support is provided for maintenance and safe operation of power equipment.

The invention discloses a divalent manganese ion-doped cadmium-based metal halide nanocrystalline scintillator material and a preparation method and application thereof, divalent manganese ions are doped in Cs3Cd2Cl7 to form full-inorganic cadmium-based halide scintillator nanocrystalline, conversion from cyan light to yellow light is realized, efficient yellow light emission with the quantum efficiency of 20.6% is further realized, and the fluorescence lifetime is 0.652 microseconds. The invention further discloses a preparation method of the nanocrystalline scintillator material. The preparation method has the advantages of being simple in process, low in cost, green, free of pollution and capable of achieving large-scale industrial production. The invention further discloses a scintillator film and preparation and application thereof, the scintillation intensity of the scintillator film is 1.3067 times that of a commercial scintillator CsI: T1 wafer, the lowest detection limit is 4.0138 [mu] Gyair / s, the imaging resolution is about 16 lp / mm, and the scintillator film can be effectively applied to the fields of X-ray medical imaging, nondestructive testing, industrial flaw detection and the like.

The invention discloses a self-activated long-afterglow material with multi-mode luminescence, a preparation method and application, which can realize effective regulation and control of the multi-mode luminescence performance of fluorescent powder and can be applied to the fields of information encryption, anti-counterfeiting and the like. Based on the defect-rich matrix CaGa4O7, the defect state concentration and depth in the matrix are regulated and controlled by simply doping and replacing Ca < 2 + > with Pb < 2 + >, so that the multi-mode optical characteristics such as the afterglow intensity and decay time of the Ca1-xGa4O7: xPb < 2 + > fluorescent powder, the photochromic degree and the excitation time dependent on fluorescence are effectively regulated and controlled; through combination of multi-mode optical characteristics, the problem that a traditional encryption and anti-counterfeiting technology is single in mode is solved, and the method has great application value in the fields of information encryption, anti-counterfeiting and the like.