Colored glass, also known as endothermic glass, refers to glass with different colors after adding coloring agent to colored art glass. Colored glass can absorb the visible light of the sun and weaken the intensity of the sun. Glass can absorb the light of the sun and increase its temperature, which is prone to thermal cracking.
Colored glass is made of ordinary glass by adding colorant. The amount of coloring dose, melting time and melting temperature will affect the depth of firing color in varying degrees. Colloidal colorants, such as gold, silver, copper, selenium and sulfur, are used to suspend very small particles in the glass and make the glass colored. In the process of firing, no matter which colorant is added, flux is added.
