Manganese dioxide itself is black, why as a colorant added to the glass to show purple it
Ordinary pigments are faded by exposure to ultraviolet light in the sun or in the presence of oxygen and sulfur dioxide in the air; but the color glass is melted with glass because of the metal that acts as a coloring agent, so it can withstand sun and rain With the growing development of science and technology, the variety of color glass will be more and more colorful, our life will be because of its embellishment and decoration and become colorful.
The color of the glass depends not only on the added colorants, but also by adjusting the temperature of the melts and the properties of the flame to adjust the valence of the elements so that the glass exhibits a different color, such as copper in the glass, if the glass is present in the presence of expensive copper oxide When the low-cost cuprous oxide (Cu2O) is present, the glass is red, and sometimes it is not possible to make the glass appear well and the second time it is heated to make the glass appear. Jinhong glass is the case, it is in the ordinary glass ingredients by adding a trace of gold made of the first firing after the gold in the form of atomic distribution in the glass, then the glass is not color; when heated again To close to the softening of the temperature, where the gold atoms into colloidal particles, then the glass will show a beautiful red.
Ordinary glass is made of quartz sand, soda ash and limestone, which is a mixture of silicate that is not fixed. The first glass produced by people is some of the poor transparency, with some small color The color of the glass is not used to make the ornaments, the requirements are not high, people just accidentally produced the color of the glass is not used to do the decoration, Out of the color of the glass, but today we require the color glass has a very high scientific requirements, which only opened the glass after the secret, can be made out.
In the glass of this wide variety of large family, in addition to our daily life often see the colorless transparent glass, there are many stained glass, black glass, such as car window glass is purple , There are blue architectural glass, etc. At the crossroads of traffic, the traffic lights have red, yellow and green three kinds of glass for the shade; the festive night is everywhere, and now people use color bulbs A variety of colors made of glass) to decorate the festive appearance; take an art photo in the camera lens put a certain color of the color filter, it has different shades of yellow, red, blue, green and other colors; Field workers, steelmakers, welders to carry different colors of protective eyepiece, a touching drama, if there is no colorful lights with the performance of the effect will be greatly less; in the music of the ballroom, if there is no laser chaos Turn the various colors, will make the music dynamic atmosphere weakened.
