Is the lacquer toxic? The lacquer is a paint that is cut directly from the lacquer tree and contains mainly urushiol, gum, nitrogen, moisture, and trace amounts of volatile acids. It has no toxic elements and is in the process of processing lacquer. Nor does it add any toxic substances, so lacquer is not poisonous. However, some people with idiosyncrasy may have allergies to lacquer and are not poisoned. Many people are very interested in lacquer poisoning. At the same time, many of them have atopic dermatitis after touching raw lacquer. Therefore, they are skeptical about the use of lacquer. Is that lacquer really toxic ? Let's take a closer look at it.
What is lacquer
In Chinese traditional furniture, the use of lacquer has a long history. As far back as ancient times, there were records of lacquer trees. "Shangshu Yugong" said: "Cangzhou Yugong lacquer silk". According to the Shanhai Jing Xi Shan Jing, “The Lushan Mountain is painted with brown wood. The mountain of Ying Lu is painted with more wood.†The above-mentioned Luzhou and Lushan refer to the lacquer trees in Shandong and Gansu Provinces. Years ago, paint wire was used as a tribute.
Nanxun lacquer was used as a royal tribute during the Ming and Qing Dynasties. It was known as "tribute lacquer." Once it was exported to Southeast Asian countries. “Fuzhi County Chronicle†and “Dejiang County Chronicle†introduce the characteristics of Nanxun lacquer and its quality is very good. There is a poem saying: "The net of lacquer is oily, and Baoguang shines on the head of the people; it shakes, and the fishing hook is raised;
Is lacquer toxic?
Raw lacquer, more common in ancient doors and windows, furniture, supplies. It is the only paint method in ancient China. The emperor of the Imperial Palace in Beijing depends on it from the gates, columns, and furniture. Its source is lacquer tree. It is a milky colloidal cut taken from the knee tree. Once exposed to air, it turns brown, and after a few hours the surface is hardened to form a patent leather. The economic value of raw lacquer is very heavy. It is corrosion-resistant, wear-resistant, acid-resistant, solvent-resistant, heat-resistant, water-repellent, insulation-resistant, shiny, and wait-resilient. It is military, industrial equipment, agricultural cypress, basic construction, handicrafts, and High-quality polyester materials such as civil furniture. These lacquerware not only have the unique national style of our country, but also because the lacquer lacquer film is bright, durable in color, and excellent in gloss retention performance, and therefore has the characteristics of being long-lasting without discoloration, non-polluting, not afraid of insect frogs and unaffected by temperature.
Pharmacological effects: For people with certain qualities, exposure to lacquer can cause severe allergic dermatitis. Tao Hongjing: The lacquer is poisonous, and people use chickens and white kimonos to get rid of worms, and even those who suffer from injuring the stomach are afraid of lacquer but are dead. Outside air can also make the body sore and have other treatments.
Lacquer preservation method
The time for cutting paint every year is appropriate from April to August. The paint quality cut by the three days is the best, because the moisture evaporates quickly during the summer and the sun shines. The quality of the paint produced is the best! Every day before the sunrise is the cut paint. The best time is for the lacquer farmer to cut the lacquer bark with a clam shell and expose the wooden incision to a sloping knife edge, inserting the clam shell or bamboo blade under the incision so that the lacquer liquid flows into the crate and is sealed with oil paper.
At this time, the paint liquid was gray-cream color, became chestnut color after contact with air, and brown after drying. "Bai Sai Xue, red blood, black as iron" means that the natural paint from the liquid state to the oxidation solidification, the color from light to deep, and finally the process of forming a strong paint film. When it comes to the color of lacquer, there is an old saying in ancient times: "All painters are black." Today, people described poor visibility in darkness and used darkness to describe the dark night.
The main purpose of lacquer
1. The anticorrosion performance of lacquer has good anticorrosion effect for wood, houses, appliances, steel, pipe fittings, vehicles and ships. These artifacts are often exposed to sunlight, wind and rain, moisture, and seawater, as well as oxidizing with the air. They are prone to rot, rust, and weathering, and are coated with lacquer to protect them.
2. Because the sealing, heat resistance and abrasion resistance of lacquer are good, the coefficient of expansion is similar to that of wood, and cracks and deformation will not occur. Therefore, lacquer is a very ideal coating for spinning grade bobbin, in chemical fiber production and In the silk printing and dyeing industry, the use of lacquer or lacquer to modify the ten-coat roller and print plate has the same effect.
3, China's lacquerware crafts world-renowned, is a traditional export goods, such as Fuzhou born, Beijing lacquer and so on. These lacquerware not only have the unique national style of our country, but also because the lacquer lacquer film is bright, durable in color, and excellent in gloss retention performance, and therefore has the characteristics of being long-term non-discoloring, non-polluting, not afraid of gallbladder and not affected by temperature.
Are the raw lacquers shared by the furniture network poisonous and what are the uses of lacquer? Do you understand this?
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