46 results about "Strontium aluminate" patented technology

The invention relates to the technical field of wood manufacturing, in particular to a preparation method of a multifunctional phase-change transparent wood-based composite material, which comprises the following steps: delignification of wood through acidic sodium chlorite, modification with silica sol to obtain a porous template, dipping in a PEG / MMA / AIBN / acetone mixed solution, and hot press molding to obtain a phase-change transparent base material; and finally, coating a PDMS solution containing cesium tungsten bronze and strontium aluminate, and performing low-temperature drying twice to obtain the multifunctional composite material. Silica sol pretreatment is combined with a PEG / MMA impregnation and compression technology, the preparation process is simple and easy to implement, leakage of the phase change material can be effectively prevented, meanwhile, the stability and performance consistency of the composite material are improved, the material is suitable for large-scale production, meanwhile, cesium tungsten bronze and strontium aluminate are introduced, the material is endowed with hydrophobicity, light-emitting characteristics and heat shielding capacity, and the material is suitable for large-scale production. And the intelligent building has the functions of photo-thermal management, self-cleaning and decoration, so that diversified application requirements are met.

The invention belongs to but is not limited to the technical field of self-luminescent materials, and discloses a coated modified long-afterglow luminescent material as well as a preparation method and application thereof, the organic-inorganic coated modified material comprises SiO2 and a coupling agent, and the coating thickness is 10-20nm; the long-afterglow fluorescent powder comprises the following components: SrAl2O3: Eu < 2 + >, Dy < 3 + >; the rare earth strontium aluminate material is subjected to organic-inorganic coating, so that the water resistance of the material is greatly improved. The luminescent powder is doped into concrete instead of a part of a cementing material, so that a self-luminescent cement-based material with stable and excellent luminescent property can be obtained. The hydrophobic modification performance is excellent, and the luminous concrete with poor water resistance is not easy to deliquesce, so that the luminous concrete has better luminous performance.

A luminescent heat-resistant and flame-retardant coating, its preparation method and application belong to the technical field of heat-resistant and flame-retardant materials. The coating comprises the following raw materials in percentage by weight: 30-40% of a first hydroxy acrylic resin, 10-15% of a second hydroxy acrylic resin, 5-10% of an amino resin, 20-30% of a modified flame retardant, 2-5% of a coated luminescent powder, 5-10% of hollow glass microspheres and the balance of a solvent; wherein, the modified flame retardant is an inorganic flame retardant modified by an amino silane coupling agent and hexachlorocyclotriphosphazene; the coated luminescent powder comprises an inner layer and a coating layer, the inner layer is strontium aluminate doped with europium and dysprosium, and the coating layer is alumina. The luminescent heat-resistant and flame-retardant coating of the invention has excellent flame retardant and smoke suppression effects, good heat resistance, water resistance and mechanical properties, and at the same time, the luminescent performance of the coating is stable, and it is suitable for use in fire-fighting equipment.

The application discloses a high-entropy rare earth strontium aluminate thermal barrier coating material with high fracture toughness and a preparation method thereof, and belongs to the technical field of thermal barrier coatings. 0.2 Nd 0.2 Sm 0.2 Eu 0.2 Gd 0.2 )2SrAl2O7. The high-entropy rare earth strontium aluminate thermal barrier coating material is synthesized by a solid phase method. According to the high-entropy design of the rare earth strontium aluminate, five different rare earth elements are doped in the rare earth position, the dislocation resistance of the ceramic is increased by using the serious lattice distortion effect, and the mechanical properties are improved. Through nanoindentation test, the fracture toughness reaches 2.15MPa.m 0.5 , so that the high-entropy rare earth strontium aluminate thermal barrier coating can better prevent the growth and extension of cracks.

The application discloses a kind of landscape flowerpot production polyester degradable plastics and preparation method thereof, belong to degradable plastics production technical field, first, landscape flowerpot production polyester degradable plastics includes following mass parts raw materials: polylactic acid 50~70 parts, polybutylene succinate 20~35 parts, modified polyhydroxy fatty acid ester 10~15 parts, rare earth strontium aluminate coated cerium oxide core-shell powder 0.8~1.2 parts, antioxidant 0.3~0.8 parts, lubricant 0.5~1.0 parts.The application is improved by modification PHA (promote interface compatibilization and low temperature toughness) and core-shell powder (enhance anti-ultraviolet and degradation control), combined with PLA / PBS basic system, comprehensively solve the core defects of landscape flowerpot material. Example data confirms that its low-temperature impact strength is increased by more than 50%, yellowing rate is reduced by more than 80%, rigidity remains stable, degradation rate is controllable, has outstanding environmental protection and market value.

The invention provides embossed noctilucent leather with luminous pattern groove bottoms and a preparation method of the embossed noctilucent leather, and belongs to the technical field of synthetic leather. The preparation method of the embossed noctilucent leather with luminous pattern groove bottoms comprises the following steps: S1, treating base cloth; s2, embossing and shaping; s3, groove bottom noctilucent slurry filling is conducted, specifically, the noctilucent slurry is prepared from, by weight, 50-60 parts of waterborne acrylic resin, 30-40 parts of rare earth aluminate light storage powder, 2-4 parts of bentonite, 1-3 parts of a waterborne dispersing agent, 8-12 parts of a strontium aluminate exciting agent and 20-30 parts of deionized water, and the viscosity of the noctilucent slurry is 800-1200 mPa.s; and S4, curing and cleaning. The prepared embossed noctilucent leather is accurate in noctilucent effect positioning, environment-friendly and long in afterglow time, and the noctilucent layer is high in adhesive force.

Artificial flowers and bunches of flowers that have self-glowing properties include a flower portion and optionally one or more stems and leaves. At least the flower portion includes a self-glowing material, which includes phosphorescent compounds, such as strontium aluminate or zinc sulfide, optionally doped with rare earth elements to enhance glow intensity and duration. The luminescent material may be embedded within the base structure or applied as a surface coating or both, and is bound using a suitable medium such as acrylic or epoxy resin. Optional integration of conventional lighting elements, such as LEDs, is also contemplated

According to the light-storing cement-based material and the preparation method thereof, through the synergistic effect of multiple light-emitting systems of the zinc sulfide particles, the strontium aluminate and the waste luminous ceramic powder, the light-emitting performance of high brightness and long afterglow is achieved, and the afterglow time can reach 12 hours or above; by adding the Fe3O4 / C composite nanoparticles, the light absorption efficiency and the energy conversion rate of the material are remarkably improved, and the luminous intensity is improved by more than 2 times compared with that of the traditional light storage cement; meanwhile, a three-dimensional light-transmitting network constructed by the light-transmitting glass aggregate and the organic transparent fiber tubes not only ensures the structural strength of the material, but also realizes efficient transmission and uniform luminescence of light; in addition, waste noctilucent ceramic powder is used as a raw material, so that the production cost is reduced, resource recycling is realized, remarkable environmental protection benefits are achieved, and the light storage cement can be widely applied to the fields of building decoration, road marking, emergency lighting and the like.

A ceramic material, a method of forming a ceramic material, and a ceramic substrate are disclosed, the ceramic material including surface-modified zirconia whiskers dispersed in an alumina matrix wherein the alumina matrix and the surface-modified zirconia whiskers are in a weight ratio of 97: 3 to 80: 20; wherein the surface of the surface-modified zirconium oxide whisker is provided with a strengthening phase microstructure, and the strengthening phase microstructure comprises strontium aluminate in a crystal phase.

This invention discloses a color-difference-free, uniformly luminescent concrete and its preparation method. Addressing the problems of easy hydrolysis and sedimentation of luminescent powder in alkaline cement, and the significant reduction in luminescence efficiency due to physical coating, the invention uses white silicate cement, refined quartz sand, uncoated rare-earth-doped strontium aluminate luminescent powder, and rutile titanium dioxide as the base mixed raw materials. During preparation, a multi-component liquid phase containing sodium polyacrylate, sodium gluconate, sodium aluminate, strontium nitrate, polyvinyl alcohol, and sodium tetraborate is added to the slurry in a stepwise manner and stirred. This invention utilizes the interfacial adsorption and local common ion effect of sodium polyacrylate to construct a thermodynamically balanced microenvironment around the luminescent powder, preventing hydrolysis. Simultaneously, the cross-linking of polyvinyl alcohol and sodium tetraborate forms an in-situ transient rheological network to prevent luminescent powder sedimentation. As cement hydration proceeds, the gel automatically disintegrates, and titanium dioxide approaches the luminescent interface, generating light scattering to eliminate color difference. High-brightness, uniform luminescence in concrete can be achieved without physical coating.

The invention relates to the manufacture of a ceramic assembly, in particular to a method for manufacturing a ceramic powder for a watch or jewelry component. The method comprises a stage of manufacturing a ceramic powder comprising: a first stage of preparing a ceramic powder based on zirconium and / or aluminum oxide and / or strontium aluminate; a deposition step comprising depositing at least one added element or compound on the ceramic powder by atomic layer deposition; a second stage of integrating a binder of organic material type into the ceramic powder; after the deposition step, the manufacturing method proceeds with: a third stage of temporarily shaping the ceramic powder with binder comprising the at least one added element or compound; a fourth stage comprising a step of debinding the temporarily shaped ceramic assembly and a step of sintering the ceramic assembly to manufacture a gray watch or jewelry component with two parameters a* and b* of -3 to 3.

The invention discloses a bamboo fiber reinforced degradable composite material master batch and a preparation method thereof in the field of bio-based degradable materials, the master batch takes polylactic acid as a matrix and natural bamboo fiber as a reinforcement, and a silane modified nano titanium dioxide attapulgite hybrid material and a strontium aluminate loaded mesoporous silica nano activator are introduced. During preparation, firstly, the bamboo fibers are subjected to alkali treatment pretreatment to improve the reaction activity of the bamboo fibers; polylactic acid, polybutylene terephthalate adipate, a plasticizer, a lubricant, two inorganic modified compounds and the pretreated bamboo fibers are mixed at a high speed, melt blending and extrusion are carried out through a double-screw extruder, cooling and pelletizing are carried out, and the composite material is obtained. The obtained master batch has good processability and comprehensive performance, is suitable for injection molding, extrusion and other molding processes, can be widely applied to the fields of environment-friendly packaging, daily products and the like, and is green and environment-friendly in the whole process.

The invention discloses a long-acting fluorescent antibacterial coating and a preparation method thereof, and belongs to the technical field of chemical materials. The coating consists of polyurethane and SrAl2O4: Eu < 3 + > and Dy < 3 + > powder dispersed in the polyurethane, according to the invention, the polyurethane-strontium aluminate coating is formed on the surface of the substrate, so that the adhesive force of the coating on the surface of the substrate can be enhanced, the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder can continuously release trace active oxygen free radicals in an illumination environment, and the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder can emit fluorescence in the dark and continuously release the active oxygen free radicals for 2 hours, thereby realizing continuous antibacterial effect. The polyurethane-strontium aluminate coating is prepared in the mode that the polyurethane coating and the SrAl2O4: Eu < 3 + > and Dy < 3 + > powder are mixed and coated, lasting fluorescence is achieved, meanwhile, the long-acting antibacterial effect is achieved, and the existence of the antibacterial effect of the coating can be verified through the existence of fluorescence when no illumination exists; and moreover, no heavy metal ions are released, the environment-friendly effect is achieved, and the problems of bacterium attachment and pollution on the surface of a solid base material are effectively solved.

The application discloses a preparation method of a bite plate based on a force-induced luminescent material. It belongs to the technical field of oral bite plates and can prepare a bite plate capable of directly and real-timely converting bite force into a visible light signal through a simple process, so that the visualization and semi-quantitative detection of bite contact are realized. The preparation method of the bite plate based on the force-induced luminescent material is characterized in that the method comprises the following steps: (1) synthesizing europium / dysprosium co-doped strontium aluminate force-induced luminescent material SAOED by using a high-temperature solid-phase method, wherein the doping concentration of europium is 2%, and the doping concentration of dysprosium is 1%; (2) mixing the SAOED powder obtained in the step (1) with denture powder according to a mass ratio of 1:7, adding ethanol for dispersion and grinding; (3) adding denture water in a proportion corresponding to the denture powder to the mixture in the step (2), uniformly stirring, and then performing compression molding; and (4) performing water bath heating solidification on the compression molded material, and then performing polishing to obtain the bite plate.

The invention provides a superlattice electro-optical thin film material and a composite film layer and an electro-optical component comprising the same. The superlattice electro-optical thin film material is composed of dielectric material layers and barium titanate layers which grow periodically and alternately, in each period, each barium titanate layer is provided with m unit cell layers, each dielectric material layer is provided with n unit cell layers, m is in the range of 5-50, and n is in the range of 1-20; wherein the material for the dielectric material layer is selected from scandate or strontium tantalum lanthanum aluminate. The electro-optical composite film layer based on the barium titanate superlattice structure solves the problem that the electro-optical performance of traditional barium titanate is degraded, and the electro-optical coefficient of the barium titanate film approaches or even exceeds the level of block barium titanate.

The invention discloses a flexible barium zirconate photoelectric film and a preparation method and application thereof. The preparation method of the flexible barium zirconate photoelectric film comprises the following steps: preparing a water-soluble strontium aluminate sacrificial layer on a substrate; depositing barium zirconate on the water-soluble strontium aluminate sacrificial layer by adopting a sol-gel method or a radio frequency magnetron sputtering method to obtain a barium zirconate film grown on the sacrificial layer; and immersing the barium zirconate film grown on the sacrificial layer and the flexible substrate into water, and transferring the barium zirconate film to the flexible substrate after the sacrificial layer is dissolved to obtain the flexible barium zirconate photoelectric film. Water-soluble strontium aluminate is used as a sacrificial layer, the BZO film is prepared by a sol-gel method or a radio frequency magnetron sputtering method, and the obtained BZO film has good photoelectric properties, crystallinity and thermal stability and is suitable for being applied to high-performance photoelectric devices.

The present invention provides a quantum dot enhanced long afterglow synergistic photocatalytic material and a preparation method thereof, which belongs to the field of photocatalytic semiconductor technology, and comprises the following raw materials: fluorescent component I and photocatalytic material component II; the fluorescent component I comprises the following raw materials in parts by weight: 1-2 parts of citric acid or ammonium citrate, 2-3 parts of strontium aluminate, 2-3 parts of strontium silicate, 2-3 parts of sodium tungstate, 2-3 parts of bismuth nitrate, 2-3 parts of cuprous sulfide, 10-25 parts of water, and 40-45 parts of ethylene glycol; the photocatalytic material component II comprises the following raw materials in parts by weight: 2-3 parts of urea, 2-3 parts of ammonium sulfate, 2-3 parts of melamine, 2-4 parts of dicyandiamide, 2-3 parts of cyanuric acid, 2-3 parts of nano titanium dioxide, 2-3 parts of zinc oxide, and 10-15 parts of water and a preparation method thereof. The present invention provides a quantum dot enhanced long afterglow synergistic photocatalytic material and a preparation method thereof, and realizes obtaining a composite material with stable catalytic activity and strong fluorescence ability.

The present invention relates to a method for manufacturing a watch bezel having phosphorescent performance, comprising the steps of: (a) mixing 100 parts by weight of zirconia powder and 1 to 35 parts by weight of strontium aluminate-based phosphorescent powder to obtain a mixture; (b) molding the mixture of step (a) to obtain a molded article; and (c) firing the molded article of step (b) to obtain a fired article.

The present invention discloses a rare earth long-lasting luminous luminous silk screen ink and a preparation method thereof. The rare earth long-lasting luminous luminous silk screen ink comprises the following components in parts by weight: 40-60 parts of acrylic resin or polyester resin, 40-60 parts of rare earth doped strontium aluminate luminous powder, 1-2 parts of light stabilizer, 1-2 parts of ultraviolet absorber, 1-2 parts of anti-settling agent, 1-2 parts of leveling agent, and 1-2 parts of defoaming agent. The addition of rare earth doped strontium aluminate luminous powder in the technical solution of the present invention can make the silk screen ink emit luminescence at night. After applying it to a sign nameplate, the sign nameplate can emit luminescence for marking when there is no light at night, and the luminescence effect is obvious, the luminescence time is long, the service life is long, and the anti-aging performance is good.

This invention discloses a method for preparing flexible self-supporting silver niobate thin films. The method involves first pretreating a strontium titanate substrate; then, using pulsed laser deposition, a strontium aluminate sacrificial layer and a silver niobate functional layer are sequentially sputtered onto the strontium titanate substrate to form an STO / SAO / ANO heterostructure; finally, polydimethylsiloxane is attached to the surface of the silver niobate functional layer, and the strontium aluminate sacrificial layer is dissolved in deionized water to obtain a self-supporting silver niobate thin film. This invention achieves damage-free exfoliation of the silver niobate thin film by introducing a water-soluble strontium aluminate sacrificial layer. The prepared flexible self-supporting thin film exhibits good polarization characteristics, double hysteresis loop features, and excellent electrical stability, making it suitable for the development of perovskite-based oxide flexible functional devices. This method is controllable and reproducible, providing high-quality self-supporting functional thin film materials for flexible electronic devices.

The invention relates to a luminescent artificial vegetation element comprising one or more bodies made from a material or raw material mixed with a mixture of dye pigments and with an additive filler with luminescent properties. The additive filler with luminescent properties is preferably an additive filler with phosphorescent properties and, even more preferably, a strontium aluminate filler.

The application discloses a water transfer ferroelectric thin film silicon-based waveguide modulator. Taking barium titanate material as an example, the water transfer method is to immerse the grown strontium aluminate / strontium titanate heterojunction into deionized water to dissolve the strontium aluminate layer to obtain a barium titanate layer, and then transfer the barium titanate layer to the silicon-based waveguide modulator. At present, the existing barium titanate silicon-based waveguide modulator is mostly prepared by the method of epitaxially depositing barium titanate on the strontium titanate oxide layer. Compared with the existing method of preparing barium titanate thin film by an oxide buffer layer, the water transfer method can prepare high-quality barium titanate thin film with good ferroelectricity and epitaxy, excellent flexibility and can be transferred to the substrate without damage. In the application, an embodiment of a barium titanate electro-optic silicon-based waveguide modulator is listed, and it can be found that the barium titanate prepared by the water transfer method can be used in the silicon-based waveguide modulator to obtain a modulator with excellent electro-optic performance, which proves the feasibility and high efficiency of the water transfer barium titanate method for modulation.

The invention provides a light-heat dual response intelligent long afterglow coating which is prepared from the following components in parts by mass: 15 to 25 parts of coated strontium europium dysprosium aluminate, 10 to 20 parts of thermochromic microcapsules, 5 to 15 parts of tungsten-copper heterojunction filler, 30 to 40 parts of organic silicon modified acrylic resin, 3 to 8 parts of interface bridging agent and 2 to 5 parts of modified boron nitride. According to the invention, stable long afterglow performance is ensured, organic unification of photo-thermal response and long-acting luminescence is successfully realized, and the technical problems of mutual interference of components and poor environmental stability in a traditional multifunctional coating are effectively solved.

The application provides a strontium aluminate long-afterglow stress luminescence ceramic and a preparation method thereof. 2+ , x%Dy 3+ , y%Zr 4+ , wherein 0<=x<=2 and 0<=y<=3. The application can increase the afterglow duration and stress luminescence intensity of the material.

The application discloses an electrolyte for a lithium metal battery and a lithium metal battery comprising the same. In the application, strontium aluminate is used as an electrolyte additive for a lithium metal battery. In the electrolyte, a small amount of strontium aluminate is added, and the strontium aluminate can be oxidized at a low voltage. Through a simple pre-circulation process, the strontium aluminate participates in the formation of an SEI film. The introduction of a small amount of strontium aluminate does not affect the normal charging and discharging of the battery. Through a simple pre-circulation, the composition of the SEI film can be improved in situ, the formation of a stable lithium metal and electrolyte interface is realized, and the energy utilization rate and cycle life of the battery are improved. This can not only inhibit the growth of lithium dendrites, but also reduce the occurrence of side reactions, improve the coulombic efficiency of the battery to 99%, prolong the cycle life, and after 300 cycles, the discharge capacity is only 93.5% of the initial capacity.

Artificial flowers and bunches of flowers that have self-glowing properties include a flower portion and optionally one or more stems and leaves. At least the flower portion includes a self-glowing material, which includes phosphorescent compounds, such as strontium aluminate or zinc sulfide, optionally doped with rare earth elements to enhance glow intensity and duration. The luminescent material may be embedded within the base structure or applied as a surface coating, and is bound using a suitable medium such as acrylic or epoxy resin. Optional integration of conventional lighting elements, such as LEDs, is also contemplated.

The application provides a luminescent material for enhancing stress luminescence and photoluminescence of SrAl2O4 and a preparation method thereof.The chemical general formula of the luminescent material is SrAl2O4:m%Eu-n%Dy-z%B4C;0.001<=m<=10;0.001<=n<=10;0.125<=z<=5;m, n and z represent the molar percentage content.By introducing B4C inorganic compounds and regulating the concentration of the doped B4C, the stress luminescence and photoluminescence performance of the SrAl2O4-based luminescent material is enhanced, and the luminescent material has great potential for commercial application value of strontium aluminate material.

An earplug includes a body made of a silicone material containing a phosphorescent material that causes the earplug to glow in the dark after exposure to light. A filter for reducing sound is positioned within the body. The silicone material includes 80-90% polydimethylsiloxane and 5-15% of the phosphorescent material, such as zinc sulfide, strontium aluminate, or rare-earth metal chelates. A fin extends from the body and fits into folds of an outer ear to secure the earplug in place. The body has a layered design with multiple sections that gradually decrease in diameter toward a tip of the earplug.

The present application discloses a novel magnetic insulator epitaxial film based on Fe3Ga alloy and a preparation method thereof, which belongs to the field of spin storage and logic operation technology in spin electronics. First, the bulk Fe3Ga target is set to the DC power supply position, and the substrate is fixed to the center of the dial using high-temperature resistant silver glue so that the target corresponds to the substrate strontium tantalum aluminate (LSAT), and then vacuum is evacuated; then the DC power supply is turned on, and pre-sputtering preparation is performed on the surface of the target. After the glow is stable, formal sputtering begins. After the sputtering is completed, a magnetic insulator epitaxial film can be obtained. The magnetic insulator epitaxial film obtained in the present application has excellent electrical properties, and its resistivity reaches 400mΩ.cm at room temperature; through the measurement of the hysteresis loop, it is found that its in-plane saturation magnetization is about 1100emu / cm 3 , its effective magnetic anisotropy constant K eff Larger, about 0.6×10 7 erg / cm 3 .

An earplug includes a body made of a silicone material containing a phosphorescent material that causes the earplug to glow in the dark after exposure to light. A filter for reducing sound is positioned within the body. The silicone material includes 80-90% polydimethylsiloxane and 5-15% of the phosphorescent material, such as zinc sulfide, strontium aluminate, or rare-earth metal chelates. A fin extends from the body and fits into folds of an outer ear to secure the earplug in place. The body has a layered design with multiple sections that gradually decrease in diameter toward a tip of the earplug.