260 results about "Strontium aluminate" patented technology

A pneumatic tire having a non-black rubber composition provided at the at least one portion thereof, at least a portion of said non-black rubber composition comprising 100 part by weight of at least one synthetic rubber and 5 to 100 parts by weight of strontium aluminate or calcium aluminate a long afterglow phosphorescent substance having an average particle size of 1 to 100 Am and having no substantial amounts of carbon black and staining antioxidant, and crosslinked with a crosslinking agent other than sulfur or a pneumatic tire having two or more layer structure of a surface layer of the above phosphorescent rubber composition layer and a lower layer of a blight-colored reflecting layer or the transparent or translucent cover layer and the under phosphorescent rubber composition layer.

A light-collecting luminescent pigment and luminescent fiber thereof are disclosed. The pigment consists of light-collecting powder with strontium aluminate as substrate 30-45wt%, refractive reflecting powder 10-15wt% and carrier 40-60wt%. It has excellent wetting ability and adhesion. It can be used for luminescent fiber and other luminescent products.

The invention relates to a light-emitting/transmitting plastic lampshade. The plastic lampshade takes one or more transparent or semitransparent thermoplastic resin as base resin and comprises a strontium aluminate salt luminous pigment, which is 10-30% in weight percentage and 30-120 mu m in particle size and is excited by rare earth europium ions and dysprosium ions. The chemical formula of the luminous pigment can be represented as SrAl2O4:Eu<2+>,Dy<3+> or Sr4Al14O25:Eu<2+>,Dy<3+>. Before being compounded with the base resin, the luminous pigment is subjected to cladding treatment by using polymethyl methacrylate with the thickness being 0.1-1 mu m at first. The molding method of the lampshade comprises the steps of extruding, injection molding and blow molding, and the lampshade has the thickness ranging from 1mm to 3mm. The lampshade has good light transmittance and luminance, is more than 65% in light transmittance, exceeds 80mcd/m<2> in luminance within 10min, and exceeds 10mcd/m<2> in luminance within 60min. The light-emitting/transmitting plastic lampshade can not only guarantee the daily illumination function but also fulfill functions of emergency illumination and evacuation indication in a dark environment, and is simple in structure, convenient to machine and obvious in cost advantage.

The present invention aims to provide a mechanoluminescent material which is excellent in mechanoluminescent properties and can achieve a mechanoluminescence intensity sufficiently suited to practical use, a raw material composition for producing the mechanoluminescent material, and a method for producing a mechanoluminescent material. The mechanoluminescent material of the present invention includes strontium aluminate as a base material, a Eu ion, and at least one ion selected from the group consisting of Nd, Dy, and Ho. An amount of the Eu ion contained in the mechanoluminescent material is 0.0001 to 0.1 mol per mole of the strontium aluminate. An amount of the at least one ion selected from the group consisting of Nd, Dy, and Ho contained in the mechanoluminescent material is, as the sum of amounts of the three ions Nd, Dy, and Ho, 0.0001 to 0.01 mol per mole of the strontium aluminate. The present invention also provides a raw material composition for a mechanoluminescent material used for synthesizing the mechanoluminescent material, a mechanoluminescent coating composition and a resin composition each containing the mechanoluminescent material, and applied articles such as mechanoluminescent articles formed from the resin composition.

A luminescent plastic product and its production are disclosed. The plastic product consists of polyvinyl chloride resin 100 proportion, plasticizer 1-80 proportion, stabilizer 0.1-6 proportion, rare-earth long-acting fluorescent powder 0.5-6 proportion, and coupler 1-4 proportion. The plasticizer is made from dibutyl phthalate, dioctyl ester, non-toxic plasticizer or flame-retardant plasticizer or its combination; stabilizer is made from lead salt, metal soap, organic tin, composite stabilizer and ultraviolet absorbent or its combination; rare-earth long-acting fluorescent powder is strontium aluminate. The process is carried out by furnishing, forming, adding mixture into mono-screw extruder or bi-extruder, heating, extruding into products with various shapes by mould ram head, vacuum sizing, cooling by water, inspecting and packing. It can be used for household furniture, indoor and outdoor ornaments, door and window seal and road sign. It's economical and practical, has long life and better luminescent effect and saves resources.

A phosphorescent phosphor having excellent afterglow luminance characteristics, even under low illumination intensity of radiation conditions, compared to conventional strontium aluminate phosphorescent phosphors of the same type, and particularly a phosphorescent phosphor having excellent initial afterglow luminance characteristics and excellent afterglow luminance characteristics at 60 and 90 minutes after cessation of the excitation, with following requirements: 0.015<Eu/(Sr+Ba+Eu+Dy)≦0.05, 0.3≦Dy/Eu≦2, 0.03≦Ba/(Sr+Ba)≦0.2 and 2.1≦Al/(Sr+Ba+Eu+Dy)≦2.9.

The present invention discloses process of preparing RE excited long afterglow strontium aluminate fluorescent powder. The process includes the following steps: 1. preparing mixed solution of strontium nitrate, aluminum nitrate and lanthanide RE nitrate in the molar ratio of 29.6-39.5 to 59.2-69.2 to 0.65-1.8, regulating the pH value of solution to 2-8, and adding sol forming agent through stirring at 80-120 deg.c for 1-24 to form sol; 2. heating the sol at 300-900 deg.c for 1.5-30 hr to obtain solid pre-baked matter; and 3. grinding the solid pre-baked matter, adding inorganic salt, igniting at 800-1400 deg.c in reducing atmosphere, and washing to obtain the RE excited long afterglow strontium aluminate fluorescent powder. The present invention has simple technological process, high product performance and important industrial application value.

The invention discloses a strontium aluminate luminous material and a controllable synthesis method thereof. According to the method, Al(NO3)3.9H2O, Sr(NO3)2, CO(NH2)2, C6H5Na3O7.2H2O, Eu2O3, Dy2O3 and HNO3 are used as raw materials. The method is a hydrothermal synthesis-calcining two-step method, and comprises the following steps of: (1) dissolving the Sr(NO3)2 and the Al(NO3)3.9H2O into distilled water respectively to form nitrate solution, taking the nitrate solution with metering, fully mixing the nitrate solution, then adding europium nitrate and dysprosium nitrate into the mixed nitrate solution, mixing the solution and CO(NH2)2 or surfactant in a certain ratio, placing the mixture into a closed reaction kettle, dissolving the mixture with stirring, and preserving the heat at certain temperature to obtain a precursor; and (2) filtering and drying the precursor, and annealing the precursor for several hours in an air atmosphere and a reducing atmosphere at different temperatures respectively to obtain the nano aluminate luminous material. The hydrothermal synthesis-calcining two-step method for preparing the strontium aluminate luminous material can effectively control the form and luminous color of the product; and the strontium aluminate luminous material has good dispersion property and expands the application field of luminous materials.

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 multifunctional ceramic material, the composition and mass fraction of which are: 9-15 parts of silicon carbide, 5-10 parts of lutetium oxide, 3-8 parts of aluminum oxide, 5-7 parts of acetate, 4-4 parts of kaolin 9 parts, 3-10 parts of strontium aluminate, 2-6 parts of water glass, 5-7 parts of graphene, 4-8 parts of kaolin, 6-9 parts of ceramic fiber, 4-8 parts of borax, 6-9 parts of molybdenum dioxide 3-10 parts of feldspar, 7-9 parts of ferrous sulfate, 3-8 parts of strontium aluminate, 2-6 parts of gypsum, 6-10 parts of boron nitride, 1-5 parts of active catalyst, 1 part of epoxy resin ‑3 parts, aluminum silicate fiber 8‑13 parts, cordierite 11‑13 parts, zirconia 9‑14 parts, alumina 7‑15 parts, clay 5‑8 parts, flint 1‑3 parts. The ceramic material provided by the present invention does not need to add glass glue when used, just add water directly, has good mechanical strength, and has good water absorption and shock resistance at the same time, can reduce the damage of porcelain, and its failure strength and rupture modulus High and durable, making ceramic materials a more versatile and more powerful inorganic non-metallic material.

The invention provides a solar light storage device which is capable of absorbing and storing light energy under the illumination of sun or light and other visible lights and used for night illumination or emergency illumination. The solar light storage device comprises a light concentrating device and a lamp cover. The solar light storage device is characterized by also comprising a cooling device consisting of a conduit, a pump, superconductive liquid in the pump and a heat dissipation box; the light concentrating device consists of a solar reflecting mirror, an optical screen, an optical fiber and a reflector; the lamp cover consists of inner and outer glass layers and light storage paint; and the light storage paint is prepared by the following steps: evenly mixing luminescent rare-earth material, strontium carbonate and aluminium oxide at high temperature, generating strontium aluminate luminescent rare-earth powder through solid reaction and then evenly mixing the strontium aluminate luminescent rare-earth powder, resin and addictives. By using the solar light storage device in the invention, the defects of the existing illuminator are solved, so that the solar light storage device has the characteristics of long persistence, high luminescent luminance, good light resistance, weather resistance and chemical stability, no precipitation, low construction, no radioactivity, no toxicity and harmless, safety and environmental protection and the like, the construction is simple, and the energy is saved.

The invention relates to a preparation method of a luminescent low-stretch yarn for inner decorating materials for an automobile. The prepared luminescent low-stretch yarn has a leather core structure shown in a figure 1. The yarn is prepared from the following components in percentage by mass: 65-40wt% of core layer, 25-35wt% of an intermediate layer and 10-35wt% of a leather layer, wherein the core layer is polyethylene terephthalate resin; the middle layer is polyester resin containing a strontium aluminate rear earth luminescent material, the content of the rear earth luminescent material is 20-45wt%, and the structural formula is Sr(0.99-0.95)Eu(0.01-0.05)Al2O4(Al(1-a-b)BbDya)2O3[a is 0.01-0.35 and b is 0.001-0.004]; the leather surface is polyolefin resin or polyester resin; the leather core structure is the luminescent low-stretch yarn, the afterglow intensity of the yarn which is stopped in activation in one minute is over 600mcd/m<2>, and the diameter of a single fiber is less than 60 microns. The rare earth luminescent fiber of a leather core compound structure prepared by the method is high in intensity, good in toughness and good in wear-resisting and wash-resisting performances, and can satisfy the application requirements of the inner decorating materials for the automobile.

The preparation method of strontium aluminate series light-storing long-afterglow luminescent powder body material is characterized by that it uses industrial aluminium as raw material and makes it into alkoxy aluminium, then according to the sol-gel characteristics of alcohol salt makes the strontium carbonate, excitation agent and sensitizing agent produce reaction and implement latex covering treatment instead of traditional solid ball-grinding mixing process of make the luminescent precursor material obtain nano or molecular level combination, then makes the above-mentioned material undergo the processes of drying and calcination so as to obtain the invented product.

The invention discloses a skin core structure tombarthite strontium aluminate long afterglow luminescent fiber and preparation method thereof, by mass, the luminescent fiber is prepared from 70-85% of core layer, and 15-30% of skin layer; the core layer is prepared from 10-30% of tombarthite strontium aluminate luminescent powder, 0.02-0.05% of phosphite ester, 0.02-0.2% of antioxidant agent, 0.5-1% of silane coupling agent, the balance polyamide resin; the skin layer adopts the transparent polymethyl methacrylate, or polycarbonate or polystyrene resin with added toughening agent. The prepared luminescent fiber because of the tombarthite strontium aluminate luminescent material being all located on the core layer, effectively prevents the tombarthite strontium aluminate luminescent material from falling, ensures the luminescent brightness of fibers, and raises the water resistance and abrasion resistance of the luminescent fibers, meanwhile the skin layer adopts resins with excellent transparent degree, making the prepared luminescent fibers smooth on surface, and further enhancing the luminescent effect of the luminescent fibers.

The invention relates to an infrared ray excited strontium aluminate based up-conversion luminescent functional material and a preparation thereof. The up-conversion luminescent material is obtained by doping a rare earth element and/or alkali metal element in a strontium aluminate matrix with a monoclinal structure and is of a monoclinal strontium aluminate structure. The chemical components of the up-conversion luminescent material meet the following chemical general formula: Sr(1-x-y-z)AxMyRzAl2O4, wherein A is one or more of alkali metal elements such as Li<+>, Na<+> and K<+>, and x is larger than or equal to 0 and less than or equal to 0.40; M is selected from rare earth elements such as Ho<3+> and Tm<3+>, and y is larger than or equal to 0.0005 and less than or equal to 0.10; and R is selected from rare earth elements such as La<3+>, Yb<3+> and the like, and z is larger than or equal to 0.001 and less than or equal to 0.30. The strontium aluminate based up-conversion luminescentmaterial has good physical and chemical stabilities, no radioactive contamination, high luminous intensity and adjustable color, is easy to synthesize and can be widely used in the fields of biomolecule fluorescence labeling, lasers, three-dimensional display, infrared detection, forgery prevention, solar batteries and the like.

The invention relates to fluorescent glaze, which is prepared from the following raw materials in parts by weight: 10 to 15 parts of strontium aluminate, 12 to 15 parts of long-afterglow fluorescent powder, 5 to 10 parts of kaolin, 18 to 35 parts of quartz, 10 to 16 parts of calcium phosphate, 15 to 22 parts of soda feldspar, 15 to 24 parts of potash feldspar, 2 to 9 parts of soapstone, 8 to 16 parts of calcite, 0.5 to 1.5 parts of zinc oxide and 10 to 13 parts of sodium borate. The glaze has the advantages of high chemical stability, good hardness, high transmission rate and high glossiness. The fired glaze has bright and transparent color and luster; a fluorescent effect can be achieved; the ornamental value of the product is improved; a dry process mixed glazing preparation method is selected; the phenomenon of water meeting hydrolysis and sedimentation in glaze slurry can be avoided; in addition, the luminous performance and the glaze surface quality of the fluorescent glaze can be improved. A preparation method has the characteristics that the energy is saved; the environment is protected; the energy consumption is low.

The present invention is the preparation process of phosphotungstic anion intercalated strontium aluminate hydrotalcite as one kind of solid acid catalyst for C9 arene alkylation to separate and prepare trimethylbenzene. The preparation process includes the following steps: dissolving Al(NO3)3.9H2O in 15-21 weight portions and Sr(NO3)2 in 18-25 weight portions separately in deionized water of 100 weight portions and mixing via stirring; dropping 0.1 mol/L concentration NaOH or CsOH solution slowly while heating to reach pH 8.2-9.1; dispersing the precursor in deionized water to form suspension with solid content 7-10 %, dissolving phosphotungstic acid in 3-5 wt% in the suspension, and ion exchanging and filtering in a ultrasonic vibrator; adding NaOH or CsOH solution to regulate pH value to 6.0-6.5, suction filtering and stoving at 60-100 deg.c in an oven.

The invention discloses a pavement marking capable of performing retro-reflection on electromagnetic waves. A water-based marking material adopted by the pavement marking comprises components in parts by weight as follows: 15-25 parts of nano glass powder, 10-15 parts of nano metal powder, 4-10 parts of strontium aluminate phosphor, 4-13 parts of ethylene glycol, 1-5 parts of an antifoaming agent, 1-5 parts of a heat stabilizer, 1-5 parts of a flame retardant and 15-20 parts of water. The pavement marking has the characteristics of low energy consumption, environmental protection and wide application range, meanwhile, an electromagnetic transceiving device for transmitting and receiving electromagnetic waves is arranged in a vehicle body, the electromagnetic waves are transmitted on the dependence of the pavement marking and are reflected by the nano glass powder and the nano metal powder when the vehicle body approaches the pavement marking, and the electromagnetic transceiving device can determine the position of the vehicle according to the interval of the electromagnetic wave transmitting time and the electromagnetic wave receiving time. Safe driving of the vehicle is guaranteed.

The invention provides a high-brightness reflective hot melt coating material and a preparation method thereof. The high-brightness reflective hot melt coating material is prepared from the followingmain components in parts by weight: 10 to 15 parts of an EVA (Ethylene Vinyl Acetate) hot melt adhesive, 3 to 5 parts of SEBS (Styrene Ethylene Butadiene Styrene Copolymer), 5 to 10 parts of a reflective material, 10 to 20 parts of titanium dioxide, 10 to 30 parts of filler, 1 to 3 parts of nano strontium aluminate fluorescent powder and 0.5 to 1 part of a rare-earth luminescent material. The high-brightness reflective hot melt coating material provided by the invention is capable of remarkably increasing the wear resistance, the thermal stability and the cracking resistance on the premise that other properties of the high-brightness reflective hot melt coating material are not reduced; the nano strontium aluminate fluorescent powder and the rare-earth polymer luminescent material are cooperatively used in the high-brightness reflective hot melt coating material, the rare-earth polymer luminescent material is capable of absorbing and accumulating light rays exposed by headlights and converting the light rays into visible light under the environment of poor light rays at night or in rainy days, and the rare-earth polymer luminescent material is in combined action with the fluorescent powder and glass beads, so that the luminescent intensity is ensured, and the visibility is enhanced.

The present invention provides tetravalent manganese ion doped strontium magnesium aluminate red phosphor, and a preparation method thereof. The phosphor is an intermediate transition of crystal structures of magnetoplumbite and beta-alumina mineral, belongs to the hexagonal crystal phase, and has molecular formula of Sr2MgAl22O36. The preparation method for the phosphor comprises: weighing raw materials according to a certain element molar ratio, wherein the raw materials comprise a strontium compound, a magnesium compound, an aluminium compound and a manganese compound, the element molar ratio of the Sr to the Mg to the Al to the Mn is 0.92-2:0.66-1:10-25:0.0005-0.024; after grinding and mixing, carrying out preburning for 5-10 hours, wherein the temperature is controlled to 700-1000 DEG C; removing the preburned sample, grinding and mixing again, then carrying out high temperature firing for 6-12 hours, wherein the temperature is controlled to 1200-1600 DEG C. The prepared red phosphor provided by the present invention is applicable for the fields of fluorescent lamps, solid-state white LED, display and the like.

A phosphor composition for a low-pressure discharge lamp with a high light yield and a high color temperature contains phosphors which emit in the red wavelength region, including yttrium oxide doped with europium or gadolinium-zinc-magnesium pentaborate doped with cerium and manganese, phosphors which emit in the green wavelength region including lanthanum phosphate doped with cerium and terbium and/or cerium-magnesium aluminate doped with terbium and/or cerium-magnesium pentaborate doped with terbium, and optionally a phosphor which emits in the blue wavelength region of the barium-magnesium aluminate doped with europium type. The phosphor composition additionally contains at least one phosphor which emits in the blue or blue-green wavelength region selected from the group consisting of manganese-strontium-barium-magnesium aluminate doped with manganese and europium or barium-magnesium aluminate doped with europium and manganese and strontium aluminate doped with europium and strontium-barium-calcium chloroapatite doped with europium and strontium borophosphate doped with europium.

The invention discloses a preparation method of functional rare earth long-afterglow nanocomposite and latent fingerprint imaging application of the functional rare earth long-afterglow nanocomposite and belongs to the technical field of biological analysis and fingerprint detection. Avidin is modified on the surface of an amino-functionalized strontium aluminate rare earth doped long-afterglow nano material, an avidin-functionalized rare earth long-afterglow nanocomposite is prepared, and therefore the avidin-functionalized rare earth long-afterglow nanocomposite is connected to a latent fingerprint marked by a biotinylated antibody through the recognition effect between biotin and avidin. The strontium aluminate rare earth doped long-afterglow nano material has the long-afterglow characteristic and still keeps emitting light after light source irradiation and light source removal, and latent fingerprint imaging can be achieved. The method is fast, simple and free of background interference.

The strontium aluminate paint is prepared with strontium aluminate powder in 30-45 wt%, carrier in 40-60 wt% and glaze powder in 8-20 wt%, and through mixing through stirring for 2-6 hr. The strontium aluminate paint capable of absorbing the impact energy of bullet and other powerful impact matters is suitable for being coated onto the surface of proper base to raise the impact resistance. The present invention also relates to impact resisting fiber fabric with coating of the strontium aluminate paint for making ballistic protective clothing.