Glass colorants usually use inorganic pigments. Compared with organic pigments, inorganic pigments have good physical and chemical properties, high thermal stability and excellent mechanical strength. In addition, inorganic pigments are more cost-effective and simple in process. Or it is more widely used in some fields with special requirements.

Now, in addition to adding a small amount of glass colorant when melting glass to make various colored glasses, it is also possible to use glass screen printing, that is, use glass frit, to perform decorative printing on glass products. Glass glaze, also known as glass ink, is made by mixing and stirring colorants and binders. The coloring material is composed of inorganic pigments and low-melting flux. The printed glass products should be fired in a furnace at a temperature of 520~600°C. In order to ensure the color effect, it is necessary to use high temperature resistant inorganic pigments.

Through the use of different additives in the manufacturing process of glass coloring, a range of different colors and shades of stained glass can be created. In architectural decoration, stained glass is often stitched together to create an Art Deco effect, filtering light and penetrating a particular structure or building. As an architectural element, it is both decorative and fulfills the function of a window, both aesthetically pleasing and functional.

In terms of the use of glassware, attention should be paid to the precipitation of harmful substances. If lead-containing crystal glassware is used to hold acidic beverages such as wine, cola, honey and fruit juices containing fruit acids or other acidic foods, lead ions may form soluble lead. Salt is ingested by the human body along with drinks or food, which seriously endangers health. For health and environmental protection, daily

The glassware used should be lead-free glassware, so be careful not to use lead-containing colorants when coloring the glass.

In terms of glass optical applications, the requirements for glass color are more refined, and the concentration of glass colorants will affect the degree of glass absorption of light. For example, cobalt blue, cobalt green, titanium nickel yellow, titanium chrome brown, iron chrome black and other pigments in environmentally friendly inorganic pigments have outstanding infrared reflection functions. In glass optics that require specific wavelength absorption or ultraviolet and infrared reflection requirements There are applications. Depending on the color and spectral transmittance requirements, the selection and usage of glass colorants will also be different.