Method for improving lighting effect and stability of light-storing ceramics simultaneously

Abstract

The invention discloses a method for improving lighting effect and stability of light-storing ceramics simultaneously. The method comprises the following steps: firstly adding an alcohol solution of calcium into titanium precursor liquid, adding dispersant oleic acid, adding pure water and light-storing powder later on to obtain light-storing powder-calcium titanate gel, drying, crushing and sieving to obtain dry gel powder; putting a glass matrix raw material, sieved dry gel powder and a dispersant into a pelletizer, adding pure water, then mechanically stirring and pelleting directly, adding a plasticizer after stirring for 4-8 hours, continuing to stir for 1-3 hours to obtain a mixed material, tabletting, drying and firing in a furnace. Through introducing calcium titanate as a second phase to wrap the light-storing powder to form a core-shell structure in a manually controllable way, the light-storing powder can be protected from hydrolysis or high-temperature oxidation; the calcium titanate, as plating of the light-storing powder, can also change the propagation path of fluorescence inside the ceramics, and improve the efficiency of light absorption and fluorescent output; meanwhile, the light-storing powder with a calcium titanate surface improves the poor quality of ceramic slurry, thus being beneficial to ceramic forming.

Description

Technical field [0001] The invention relates to the field of light-storing ceramics, in particular to a method for simultaneously improving the light efficiency and stability of the light-storing ceramics. Background technique [0002] Light-storing self-luminous materials can use daylight or light to store light at night or in the dark, and are widely used in night emergency indications, optoelectronic devices or components, instrument displays, low-level lighting, home decoration, and many aspects of national defense and military. [0003] The carrier materials of the light-storing products used at home and abroad include thin aluminum plates (printed with light-storing material patterns), plastics, inks, resins and other materials that can be shaped after normal or lower temperature treatment. Since the luminescent material is simply coated or mixed into the matrix, it will cause the problem of poor thermal shock. Especially in the event of a fire, the high temperature will eas...

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Problems solved by technology

[0004] However, although this solution has obvious advantages, it will inevitably cause birefringence inside the ceramic due to the difference in the refractive index of the medium (refractive index of aluminate phosphor: ~1.6, refractive index of quartz-based ceramics: ~1.45-1.50) , leading to the scattering loss of excitation light and fluorescence, and the decrease of the overall transmittance

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