High temperature luminous glazing and its production process and application in luminous glazed tile

Abstract

The high temperature luminous glazing consists of SrAl2O4EuDy 50-68 wt%, SiO2 25-40 wt%, Al2O3 4-6 wt%, CaO 1.5-3.0 wt%, MgO 0.5-1.0 wt% and Fe2O3 0.1-0.8 wt%, and is prepared through mixing, grinding, high temperature baking, crushing and other steps. It may be used in producing luminous glazed tile. It contains no any matter harmful to human body, produces no any harmful matter during use and has no harm to human body and environment. The luminous glazed tile has short light absorbing time, long afterglow time and high adaptability to weather and environment.

Description

technical field [0001] The invention relates to a luminous material technology, in particular to a luminous glaze production technology and its application in the production of luminous ceramic tiles. Background technique [0002] Although there are many kinds of luminescent products for warning or prompting at night, they are all inseparable from the most basic luminescent materials, which are mostly sulfide luminescent materials with a small amount of radiation added, so It is easy to produce radioactive pollution; at the same time, due to the existence of sulfur, harmful gases such as sulfur dioxide and other sulfides are often produced during production and use, which will cause damage to the human body and the environment; in addition, sulfide luminescent materials are exposed to light for a long time It is easy to decompose, and its stability is poor. After long-term use, it cannot maintain a stable illuminance. [0003] In addition, most of the above-mentioned existi...

AI Technical Summary

Problems solved by technology

[0002] Although there are many kinds of luminescent products for warning or prompting at night, they are all inseparable from the most basic luminescent materials, which are mostly sulfide luminescent materials with a small amount of radiation added, so It is easy to produce radioactive pollution; at the same time, due to the existence of sulfur, harmful gases such as sulfur dioxide and other sulfides are often produced during production and use, which will cause damage to the human body and the environment; in addition, sulfide luminescent materials are exposed to light for a long time Easy to decompose, its stability is poor, after long-term use, it cannot maintain a stable illuminance

[0003] In addition, most of the above-mentioned existing luminescent materials can only be applied to plastic and organic materials due to their own characteristics, which is not conducive to the production of flame-retardant or non-combustible products, such as the production of warning signs or signs that meet fire protection requirements; although, some people try The luminescent material is used in ceramics to meet the requirements of fire protection. However, since ceramics need to be fired at high temperature, the luminous pigments are easy to lose their luster after secondary firing. This is the main technical problem to be overcome in order to produce luminescent ceramics.