Add FeS, Na2S2, NaFeS2, etc. to the glass raw material, and then heat and reduce it in a reducing atmosphere, it will be brown.Can be used as a decorative material.
Colored glass is a kind of energy-saving decorative glass that can not only absorb heat rays from sunlight, but also maintain good transparency. Colored glass usually has a certain color, so it is also called colored endothermic glass.
Colored glass has blue, brown, gray, green, gold and other colors. Colored glass can effectively absorb the radiant heat of the sun and produce a "cold room effect" to achieve the effect of heat shielding and energy saving. It is the sunlight that passes through becomes soft, avoiding glare. It can effectively absorb the sun's ultraviolet rays and effectively prevent the fading and deterioration of indoor items. The color is bright and durable, which can increase the appearance of the building.
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