How to use raw lacquer?

1, which can 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 utensils are often immersed in sunlight, wind and rain, humidity and seawater, they are oxidized with air and are easy to rot. Rust and weathering, painted with raw lacquer can play a protective role.

2. It can 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, raw lacquer is an ideal coating for spinning-grade packages. 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.

3. It can be used as a good insulating material for electrical equipment.

Due to its excellent electrical insulation and certain radiation resistance, the paint film of raw lacquer is a good insulating coatings for electrical equipment such as motors and enameled wires of submarine cables, and also a good coating for some radiation test and research equipment. Moreover, due to its oil resistance and organic solvent resistance, it is also a good coating for the inner wall of aviation fuel tanks.

4. It is a good coating for lacquerware products.

China's lacquerware crafts are world-renowned and are traditional export commodities, such as Fuzhou bodiless and Beijing carved lacquer. 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.

5. Dry paint is also an important traditional Chinese medicine, which can be used to treat diseases and stop bleeding after brewing. Li Shizhen, a famous doctor in ancient China, said in Compendium of Materia Medica: "Dry lacquer is mainly used to treat diseases of middle energizer, to continue bones and muscles, to fill marrow cells, to strengthen five internal organs, to invade six acute diseases, and to catch spleen due to wind-cold." .

I. Overview of Raw Lacquer

1. Raw lacquer (natural lacquer), also known as "earth lacquer" or "national lacquer" or "raw lacquer", is a milky white colloidal liquid cut from knee wood. Once exposed to the air, it will turn brown, and after a few hours, the surface will dry and harden, forming patent leather.

2. Raw lacquer has good corrosion resistance, wear resistance, acid resistance, solvent resistance, heat resistance, water resistance and insulation, and is full of luster. It is a high-quality polyester material for military industry, industrial equipment, agricultural machinery, infrastructure, handicrafts and civil furniture. It is also one of the important materials traditionally exported by China, which is famous for its quantity and quality.

Second, the matters needing attention of raw paint

1, paint cutting

Raw lacquer is the resin flowing from the bark of sumac. After the raw lacquer is harvested, it should be noted that the wound can be directly rubbed with calluses antiseptic film, which can make the wound quickly form a tough soft film, cling to wood, protect the growth of wound healing tissue, prevent the infection of rot, prevent soil and rain pollution, prevent freezing and prevent the wound from cracking. At the same time, you can also use the tree protector to brush trees all the year round to prevent tree cortex diseases and insect pests.

2, the preservation method

(1) It is advisable to cut the paint from April to August every year, and it is best to cut the paint in dog days, because the water evaporates quickly and the sun is abundant in midsummer, and the paint produced is the best.

(2) Before sunrise every day is the best time to cut paint. Lacquer agricultural mussel shell is cut to expose the wood and cut into oblique edges. Insert clam shells or bamboo chips under the knife edge, and seal them with oil paper after the paint liquid flows into the barrel.

Step 3 dislike

(1) Raw lacquer can produce different degrees of allergy, which is mainly caused by the sensitization of urushiol and various volatiles in raw lacquer. The main ways for raw lacquer allergens to invade the human body are the skin and the wage film of the real cavity and oral cavity. Therefore, not only contact with raw lacquer and lacquer trees will lead to lacquer sores, but some people will also be allergic to raw lacquer.

(2) People who are slightly allergic to raw lacquer are only exposed parts of the skin, such as face, back of hand, fingers, etc., and then develop to neck, genitals and other parts. They begin to feel swollen and itchy, and red mounds will appear after scratching. In severe cases, blisters the size of chicken pox will appear locally on the skin. If the skin is scratched, it is easy to get infected and fester. But after treatment, it can be cured without leaving any trace.