What is raw lacquer? Let you know more about raw lacquer in one minute.

Most friends may know about paint, but they seldom hear about raw paint. Raw lacquer, also known as "earth lacquer" or "lacquer", is a milky white colloidal liquid cut from lacquer trees. Once exposed to the air, it will turn brown, and after a few hours, the surface will dry and harden, forming patent leather. Raw lacquer is an important material for China's national economic construction and one of China's traditional export products. Today, Bian Xiao will give you a general introduction to what raw lacquer is. Let's have a look!

First, the introduction of raw lacquer

In the traditional furniture of China, the use of lacquer has a long history. As early as ancient times, there were records about lacquer trees. Shangshu Gong Yu said, "Yanzhou digs palaces and paints silks"? . Shan Hai Jing ·Xi· Shan Jing said: "Guo Shan, its wood is painted brown. The base of the British cymbal is covered with lacquer wood. " Yanzhou and Guo Shan mentioned above refer to many sumac trees in Shandong and Gansu, which used lacquer silk as a tribute thousands of years ago.

As a royal tribute, Nangan Raw Lacquer Ming and Qing Dynasties was known as "Tribute Lacquer" and was once exported to Southeast Asian countries. Nangan raw lacquer introduced in Guizhou Fuzhi and Dejiang County Records has its own characteristics and excellent quality. There is a poem praising: "Raw lacquer is as clean as oil, and precious light shines on people's heads;" Shake the tiger's patches and lift the hook; Wood is three points thick and its luster lasts forever. "

Second, the growth area of raw lacquer

Rhus verniciflua is mainly distributed in eastern and central Asia. There are sumac trees in Vietnam, Korea, Japan, Myanmar and other countries, but the output and quality are not as good as those in China. Lacquer trees in China grow from southern Gansu to southern Shandong. The humid temperature and environment in these areas are very suitable for the growth of sumac.

Three. Brief introduction of raw lacquer modeling

Rhus verniciflua is a deciduous tree with a height of 20 meters. In Tiankeng National Forest Park, Fangshan District, Beijing, there is a sumac tree about 30 meters high, and its leaves are oval, oval or oval-lanceolate. Yellow-green flowers in early summer, oblate fruit in autumn, smooth and yellow in appearance. Rhus verniciflua can cut lacquer liquid after eight years, and 40-year-old Rhus verniciflua can also cut lacquer liquid. The natural lacquer liquid cut from the lacquer tree is called raw lacquer, also known as lacquer and national lacquer, also known as gold lacquer. Cooked lacquer refers to the raw lacquer after sun exposure, stirring and oxidation with tung oil.

Fourth, the preservation method of raw lacquer

The paint is cut from April to August every year, and the paint cut in dog days has the best quality, because in midsummer, the water evaporates quickly and the sunshine is sufficient, and the paint produced has the best quality! Every day before sunrise is the best time to cut paint. Lacquer agricultural mussel shell cut open lacquer bark to expose wood, cut into oblique knife edge. Insert mussel shells or bamboo chips under the knife edge, then let the paint flow into the barrel and seal it with oil paper.

At this time, the paint liquid is grayish milky white, turns into chestnut shell color after contacting with air, and turns brown after drying. "Snow-covered, red as blood and black as iron" refers to the process of natural paint from liquid to oxidative drying, from light color to dark color, and finally forms a solid paint film. When it comes to the color of paint, there is an ancient saying: "Anyone who paints without showing the color is black". Today, people describe the poor visibility in the dark, and often use it to describe the extreme darkness.

Verb (abbreviation of verb) the use of raw lacquer

Natural raw lacquer has many excellent characteristics, so it is widely used. It can be used as an important coating for military, chemical, textile, light industry, shipbuilding, electromechanical and craft products.

Now its use is briefly described as follows:

(1) Can it be used as an excellent preservative? The anticorrosion performance of raw lacquer has a good anticorrosion effect on wood, houses, appliances, steel, pipe fittings, vehicles and ships. Because these articles are often soaked in sunlight, wind and rain, humidity and seawater, they react with air and are easy to rot. Rust and weathering, painted with raw lacquer can play a protective role.

(2) Can it be used as an ideal coating for textile printing and dyeing industry? The spinning bobbin rotates at the speed of 16000 to 20000 revolutions per minute, and the yarn will break as long as the tow changes slightly. Therefore, the wooden spool must be wear-resistant, heat-resistant, moisture-proof, deformation-free, and have a certain tensile strength. Because of its good sealing, heat resistance and wear resistance, and its expansion coefficient is close to that of wood, it will not crack and deform. Therefore, it is an ideal coating for spinning bobbin. In chemical fiber production and silk printing and dyeing industry, the effect of modifying and coating ten coated leather rollers and printing plates with raw lacquer or raw lacquer is the same.

(4) Is it a good coating for lacquerware products? China's lacquerware crafts are world-famous and are traditional export commodities, such as Fuzhou bodiless, Beijing carved lacquerware, meticulous I* square lacquerware, etc. These lacquerware not only has the unique national style of our country, but also has the characteristics of long-term non-discoloration, no pollution, no fear of insects and no influence of temperature because of its bright paint film, lasting color and excellent light retention.

In addition, dry paint is an important traditional Chinese medicine, which can be used to treat diseases and stop bleeding after soaking. Li Shizhen, a famous doctor in ancient China, said in Compendium of Materia Medica: "Dry lacquer is mainly used to treat brain injuries, continue bones and muscles, fill marrow cells, consolidate five internal organs, invade six emergencies, and pinch spleen due to cold, and so on." .

To sum up, raw lacquer has many excellent properties, so it is widely used. With the development of modified coatings, the demand for raw lacquer in national economic construction will increase day by day. Vigorously developing raw lacquer production is of great significance to supporting socialist modernization and developing mountain economy. After reading Bian Xiao's introduction above, you must know more about raw lacquer. If you want to know more about raw lacquer, please continue to pay attention to our website.

Tubatu Online provides you with "every decoration quotation, 1-4 local decoration companies, 3 sets of decoration design schemes" and the decoration pit avoidance strategy for free! Click this link:/Zhu Ye /zxbj-cszy.php? to8to _ from = SEO _ zhidao _ m _ jiare & amp； Wb, you can get it for free ~