A coloring method of glass includes coating a layer of background color, such as white paint, on the glass blank by soaking or spraying, drying, coating a layer of transparent bright oil, pasting colored paper with colors, patterns, patterns and characters on the surface of the glass blank, high-temperature treatment, and tearing off the colored paper. Se su found that if 0.4 ~ 0.7% colorant is added to the composition of ordinary glass, the glass can be colored. Colorants are mainly metal oxides. We already know that each metal element has its unique "spectral characteristics", so different metal oxides can show different colors. If these oxides are added to the glass batch, the glass will be colored. For example, when chromium oxide (Cr2O3) is added, the glass turns green; Manganese dioxide (MnO2 _ 2) was added to make the glass purple. When cobalt oxide (Co2O3) is added, the glass is blue, which is the protective eyepiece used by steel workers and welders.

In fact, the color of glass depends not only on the added colorant, but also on the melting temperature and the properties of furnace flame to adjust the valence of elements, so that the glass presents different colors. For example, copper in glass, if high-priced copper oxide exists, the glass appears blue-green; In the presence of cuprous oxide (Cu2O), glass is red. Sometimes, the first melting can't make the glass show well, and it needs secondary heating to make the glass show color. This is the case with precious golden red glass, which is made by adding a small amount of gold to ordinary glass components and firing. After the first melting, gold is distributed in the glass in the form of atoms, and the glass does not develop color at this time; When heated to a temperature close to softening again, the gold atoms in it polymerize into colloidal particles, and then the glass appears beautiful red.

Nowadays, people use oxides of rare earth elements as colorants to make various high-grade colored glasses. Colored glass doped with rare earth elements has clear tone and bright color, and even changes color under different light. For example, neodymium oxide glass has this characteristic. It's purple in the sun and blue-purple in the fluorescent light, which is very beautiful. There is a kind of glass that changes color with the intensity of light. People use it as lenses for glasses and window glass for houses. Using this kind of glass as window glass can keep a certain brightness indoors, and it is no longer necessary to use curtains to shade the sun, so some people call it "automatic curtains". It can also block the passage of ultraviolet rays in the sun. After installing this glass in libraries and museums, books and cultural relics can be protected from ultraviolet rays.

In addition to rare earth elements, directly adding tungsten and platinum into glass can also be used to make color-changing glass or propylene oil painting pigment, but the cooling time may be longer.

Just do it, and you can draw on your clothes, hehe.

I suggest using propylene pigment, because it is cheap and effective.

Acrylic pigments are very popular with painters. Compared with oil painting pigments, it has the following characteristics:

(1) can be released by water, which is beneficial to cleaning.

(2) Quick drying. Pigment can be dried in a few minutes after putting pen to paper, instead of waiting for months to polish it like oil painting. Painters who like slow-drying pigments can use retarders to delay the drying time of pigments.

(3) After drying, the colored layer will quickly lose its solubility and form a tough, elastic and impermeable film. This film is similar to rubber.

(4) The color is full, dense and fresh, and no matter how it is blended, it will not feel "dirty" or "gray". The color layer will never be stained by oil absorption.

(5) The durability of the work is long. The oil film in oil painting is easy to oxidize, yellow and harden, and it is easy to crack the picture after a long time. Theoretically, acrylic films will never become brittle and yellow.

(6) The biggest difference between acrylic pigment and oil painting is that it has the operational characteristics of general water-based pigment, which can be used as both watercolor and gouache.

(7) There are particles, coarse particles and fine particles in the acrylic plastic ointment, which provides convenience for making texture.

(8) Propylene pigment is nontoxic and will not cause harm to human body.

It should be noted that acrylic painting should be painted on the base made of acrylic primer (gypsum), and oily base painting cannot be used. Material experts also don't advocate the mixed use of propylene and oil painting colors, especially don't paint oil paintings on propylene base, mainly for the permanent preservation of works. Propylene has no adverse reaction with oil painting pigments, and its adhesion needs time to be tested when it is used alternately. Hmm! I don't know how the color of glass came from. Window film is easier and cheaper.

In the big family of glass, in addition to the colorless transparent glass that we often see in our daily life, there are many colored glasses, including black glass, such as purple-black car window glass and blue architectural glass. At traffic intersections, traffic lights should have red, yellow and green glasses as lampshades; There are lanterns and colorful decorations everywhere on holiday nights. Nowadays, people use colored light bulbs (mostly made of various colors of glass) to decorate the appearance of festivals. To take an artistic photo, you have to put a color filter on the camera lens, which has different shades of yellow, red, blue and green. Drivers, field workers, steel workers and welders should carry protective eyepieces of different colors. Without colorful lights, the performance effect of a touching drama will be greatly reduced. In a very musical ballroom, if there are no lasers of various colors, the dynamic atmosphere of music will be weakened.

How did these beautiful glass colors come from?

Ordinary glass is made by melting quartz sand, soda ash and limestone together. It is a mixture of silicates and its composition is uncertain. The first glass made by people was small pieces of glass with poor transparency and some colors. Its color is not consciously added, but the result of impure raw materials and impurities. At that time, stained glass was only used as an ornament, and the requirements were not high. People only produced colored glass by accident. The colored glass we require today is very scientific and can only be made after the secret of glass coloring is uncovered.

It is found that if 0.4 ~ 0.7% colorant is added to the composition of ordinary glass, the glass can be colored. Colorants are mainly metal oxides. We already know that each metal element has its unique "spectral characteristics", so different metal oxides can show different colors. If these oxides are added to the glass batch, the glass will be colored. For example, when chromium oxide (Cr2O3) is added, the glass turns green; Manganese dioxide (MnO2 _ 2) was added to make the glass purple. When cobalt oxide (Co2O3) is added, the glass is blue, which is the protective eyepiece used by steel workers and welders.

In fact, the color of glass depends not only on the added colorant, but also on the melting temperature and the properties of furnace flame to adjust the valence of elements, so that the glass presents different colors. For example, copper in glass, if high-priced copper oxide exists, the glass appears blue-green; In the presence of cuprous oxide (Cu2O), glass is red. Sometimes, the first melting can't make the glass show well, and it needs secondary heating to make the glass show color. This is the case with precious golden red glass, which is made by adding a small amount of gold to ordinary glass components and firing. After the first melting, gold is distributed in the glass in the form of atoms, and the glass does not develop color at this time; When heated to a temperature close to softening again, the gold atoms in it polymerize into colloidal particles, and then the glass appears beautiful red.

Nowadays, people use oxides of rare earth elements as colorants to make various high-grade colored glasses. Colored glass doped with rare earth elements has clear tone and bright color, and even changes color under different light. For example, neodymium oxide glass has this characteristic. It's purple in the sun and blue-purple in the fluorescent light, which is very beautiful. There is a kind of glass that changes color with the intensity of light. People use it as lenses for glasses and window glass for houses. Using this kind of glass as window glass can keep a certain brightness indoors, and it is no longer necessary to use curtains to shade the sun, so some people call it "automatic curtains". It can also block the passage of ultraviolet rays in the sun. After installing this glass in libraries and museums, books and cultural relics can be protected from ultraviolet rays.

In addition to rare earth elements, tungsten and platinum can be directly added to the glass, and it can also be made into color-changing glass.

Ordinary pigments fade due to the irradiation of ultraviolet rays from the sun or the action of oxygen and sulfur dioxide in the air; However, stained glass can withstand the sun and rain and keep a beautiful youthful appearance forever, because oxides such as metals that play a coloring role have been integrated with glass. With the development of science and technology, the varieties of stained glass will become more and more colorful, and our life will become colorful because of its embellishment and decoration. The glass surface can be frosted, just like the frosted interior decoration. Take over.

Come on, you can color it.