20 results about "Strontium aluminate" patented technology

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.

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 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.

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 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.

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.

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.

This invention relates to the field of advanced petrochemical new materials technology, and discloses a luminescent composite material, its preparation method, and its application. The composite material comprises the following components: homopolymer polypropylene, polybutylene succinate, a compatibility modification system, double-modified rare-earth strontium aluminate luminescent powder, dispersant, antioxidant, weathering agent, toughening agent, nucleating agent, and silane coupling agent. This invention employs a compatibility modification system composed of maleic anhydride-grafted PP-g-PBS copolymer and double-modified nano-montmorillonite. The maleic anhydride-grafted PP-g-PBS copolymer constructs a chemical link between the polypropylene and polybutylene succinate molecular chains through a grafting reaction, reducing the interfacial tension between the two resins. The double-modified nano-montmorillonite, after ionic liquid intercalation and silane grafting treatment, exhibits increased interlayer spacing and improved surface activity, uniformly dispersed in the matrix, and acts as a physical crosslinking point, improving the compatibility of the matrix resin and preventing phase separation.

This invention provides a novel strontium aluminate compound having afterglow luminescence based on strontium aluminate, afterglow luminescent particles comprising the compound, and a method for producing afterglow luminescent particles. [Solution] A strontium aluminate compound having residual luminescence and doped with at least europium, silicon, and nitrogen, wherein in the XPS spectrum, the maximum peak of the 2p electron binding energy of aluminum is in the range of 70 eV to 75 eV, two peaks including the maximum peak of the 3d electron binding energy of strontium are in the range of 130 eV to 137 eV, and the maximum peak of the 2p electron binding energy of silicon is in the range of 101 eV to 105 eV.

The invention relates to the technical field of flexible electronic device preparation, and particularly provides a method for lossless transfer of a large-area perovskite oxide film based on a PPC support layer, and the method comprises the steps: preparing a high-quality flexible perovskite oxide film through employing a water-soluble sacrificial layer strontium aluminate, preparing a PPC solution, and carrying out the spin coating of a flat PPC film with the thickness of 1-3 [mu] m through a spin coater, an acetone / ethanol solution is used for cleaning the PPC supporting layer, and the crystal structure and the physical property of the thin film are not damaged after transferring. The size of the oxide thin film transferred by the method reaches the millimeter level, the thin film keeps excellent single crystal characteristics, an atomic level flat surface and good ferroelectric performance, and the oxide thin film can be used as a flexible electronic material.

A phosphorescent endodontic post includes a fiber-reinforced composite material including a polymeric matrix and reinforcing fibers; and phosphorescent particles dispersed within the polymer matrix. The phosphorescent particles are configured to emit visible light for about 5 minutes to about 10 minutes following activation by a standard dental curing lamp operating in the 400 nm-500 nm spectrum. In an embodiment, the phosphorescent particles can include europium-doped strontium aluminate. In an embodiment, phosphorescent particles are uniformly dispersed throughout the polymer matrix.