Aug 26 , 2021
Diy blue pigments – How do you make blue pigments?
Before describing to you how to make blue pigment（Diy blue pigments）, the author first talks about the origin of blue pigment and the popularity of blue.
The Origin of Blue pigments
In the early 20th century, since many artists recognized the emotional power of blue, they have made it a core element of painting. After a long time, blue became one of the three primary colors of painting and traditional color theory and pigments in the RGB color model.
How much do people like blue?
1.Historical records indicate that many countries consider blue as their national or local color.
2. It is a popular color in public opinion tests in the United States and Europe, with almost half of men and women choosing blue as their favorite color. The same survey report also shows that blue is the color most relevant to men, second only to black, and also the color related to intelligence, knowledge, composure, and concentration.
How do you make blue pigments?
Step 1: Things that you will need (10 materials)
(1)Blue pea flowers; (2)A container (to collect your flowers); (3)A big basin; (4)Two perforated containers (for washing and keeping the petals); (5)A towel; A metal strainer (optional); (6)Some clean water.
Step 2: Started making(Diy blue pigments)
1.Harvest the Clitoria ternatea (Bunga telang). They are very easy to grow. I grew mine on sandy, clay-ey medium and made them crawl on my gate. It willingly complied. It willingly complied. I usually pick at night. The more you pick it, the stronger it will grow.
2.What to do is separate the blue petals from the calyx. The method is to gently hold the petals and calyx with each hand and then gently pull them in the opposite way.(Diy blue pigments)
Note: Handling all petals needs to make sure they are clean.
3.Washing the petals is a very critical step.
In the case of many petals, you can consider cleaning with a larger box with small holes or gaps.
Note: Water should flow over the flowers.
4. After processing all the flowers, place the opaque bag in a glass or dry plastic container in the refrigerator. Try it for a week and add a saddle bag if it can.
Step3: How to extract blue pigment?
(1)Soak all petals in water. The longer you soak, the darker the blue. Take out after soaking for 20 minutes. If it takes too long, it may become dark.
(2)After bringing out the more satisfactory hue, take out the blue petals. If you think the color is too dark, you can dilute it at any time.
After reading the above article, do you all know how to make blue pigments? Let ’s spread the knowledge for everyone: how did the ancients make pigments?(Diy blue pigments)
1.At the very beginning
As far back as the peak cave age, pigments appeared, decorating the beautiful world. “The mountains and rivers are clear at night, and the trees are crimson and pale yellow.” “Red cherry, green banana, easy to throw people.” This colorful color has attracted countless scholars and chemists. .
The so-called “royal purple” is the purple snail. At first sight, Caesar the Great was so fond of this gorgeous purple in Egypt that he designated it as a Roman royal color. But the extraction process of this dye is not just a “nausea” description.
Put rotten snails in a mixture of urine and water. Clothes dyed with this dye have a unique smell of fish and the sea. The yield of this method is particularly small. A Roman robe requires 250,000 snails. Because 250,000 snails can only extract 2.5 ounces of dye.
This nauseating production process continued until 1856, when an 18-year-old chemist, William Henry Perkin (W.H. Perkin), synthesized aniline violet dye. However, what Perkin wanted to synthesize was quinine, a drug used to treat malaria, but accidentally invented aniline violet, which can be described as “inadvertently inserting willows and willows.”
2.Step into the second stage
In 1856, A.W.Hoffmann keenly foresaw the application of organic chemistry in medicine, proposed the idea of artificially synthesized quinine, and told his student Perkin. The newborn calf is not afraid of tigers. Perkin, who knew nothing about Quinine, boldly told Huffman that he would solve the problem of quinine synthesis.
At the time, Perkin was working on coal tar. He thought that since the elemental composition of acrylmethylaniline extracted from coal tar is the same as that of quinine, if two acrylmethylaniline molecules can be combined, add some potassium dichromate to make up for the lack of oxygen Atom, can’t we make quinine?
He did the “ideal experiment” in his mind, that is, adding potassium dichromate to acrylmethylaniline to get a beautiful purple mucus! In fact, many chemists have obtained it before, but they have thrown away this “dirty” thing in disgust, but Perkin has unique wisdom and extracted aniline violet dye from it.
Once aniline violet was invented, it swept the world, and even Queen Victoria liked it. Perkin later established the world’s first synthetic dye factory to produce aniline violet in Harrow, and thus became the world’s richest man.
Three words shouted in my heart: Chemistry makes me happy, chemistry makes me rich, chemistry gives me strength ~~~ It seems to be a cult
Origin of materials
At first, the precious lapis lazuli can only be mashed and mixed with a vehicle (oil, egg white or gum) to make the ultramarine pigments required for various types of painting.
Lapis lazuli is produced in distant Afghanistan, and it takes a long time to reach Europe by boat. The distant origin and rarity make it almost the most expensive pigment of the Renaissance.
“The lapis lazuli looks like heaven, or the gold dust is scattered and splendid, if the stars are beautiful in the sky.” Ultramarine is extremely beautiful, giving a sense of nobility, no wonder it has become the exclusive color of the Virgin.
3.Step into the third stage
In the 1920s, the French government offered a prize of 6,000 francs to encourage chemists to develop a lower-cost ultramarine. The chemists did it, and the famous French ultramarine ever came out. This pigment has the same chemical structure as natural ultramarine, and because it has no natural ultramarine impurities, its color is more pure.
4.Transform more mature extraction methods
Chinese blue is an artificially synthesized blue compound with a chemical formula of BaCuSi4O10, which first appeared in the Warring States Period. The Freer Institute in the United States analyzed blue and purple barium copper silicates from painted pigments such as Chinese Warring States to Han Dynasty pottery and bronzes, and named them Chinese blue and Chinese purple, respectively.
In 1900 Le Chatelier prepared two crystals, BaCuSi4O10 and BaCuSi2O6, and applied for a patent at the Berlin Patent Office. However, the academic community generally believes that the Chinese blue pigment used for cultural relics is synthetic and related to ancient Chinese glass manufacturing technology and raw materials.