Waterproof, high temperature resistant, low-illuminance yellow-green luminous powder and production method

Abstract

The invention discloses waterproof, heat-resistant and low-illumination yellow green luminous powder and a production method thereof, so that salts or oxides of strontium, aluminum, europium, dysprosium and boron are fully mixed, and the problem that a traditional solid mixture cannot be easily mechanically mixed evenly is overcome. Fully dispersed mixtures are subjected to solid-phase reaction in a kiln with a reducing atmosphere at 1350-1450 DEG C for three hours; the generated fluorescent block material is subjected to mechanical machining such as crushing, ball-milling and sieving to form powder with one particle size; the powder is treated by inorganic acid; the particle surface is smooth; a transparent film of a molecular layer wraps the surface of a tiny particle with a special solvent; the film coating is capable of isolating water vapor from oxygen, has good waterproof property, moisture resistance and oxidation resistance; due to the light reflection of the transparent film, the brightness is improved; and the light-absorbing energy level is lowered.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to waterproof, high temperature resistant, low-illuminance yellow-green luminous powder and a production method. Background technique [0002] Luminous powder is currently widely used in paints, coatings, inks, plastics and other industries, as well as in fields such as luminous markings, luminous clothing, luminous crafts, luminous household items, luminous kitchen and bathroom building materials, etc. However, the current luminous powder generally has the following defects: [0003] 1) Poor moisture resistance, not waterproof, easy to agglomerate, and short storage time; [0004] 2) Poor high temperature resistance, for example, in the production of luminous glass, luminous ceramics, etc., it is easy to oxidize at high temperature and partially or completely loses its luminous performance; [0005] 3) The excitation energy level is high, low illuminatio...

AI Technical Summary

Problems solved by technology

[0003] 1) Poor moisture resistance, not waterproof, easy to agglomerate, and short storage time;

[0004] 2) Poor high temperature resistance, for example, in the production of luminous glass, luminous ceramics, etc., it is easy to oxidize at high temperature and partially or completely loses its luminous performance;

[0005] 3) The excitation energy level is high, low illumination and LED energy-saving lamp lighting environment cannot be effectively excited, and the afterglow luminous effect is poor. Only after sufficiently high illuminance and energy excitation can it effectively emit light, and the afterglow brightness is also low, etc.

[0006] In order to overcome the above shortcomings, the researchers developed a blue-green luminous powder, which partially solved the problems of moisture resistance and high temperature resistance. With the widespread use of LED energy-saving lamps, the blue-green luminous powder is not effective in the lighting environment of LED lamps. The problem of insufficient excitation and afterglow brightness limits its application range and cannot meet the needs of users in practical applications.

At present, there is no yellow-green luminous powder in the market that is waterproof, high temperature resistant, low illumination, and long afterglow