How is pine resin produced? What s the use?

The formation of pine resin is generally believed that the chloroplasts in the leaves of pine trees absorb and use light energy for photosynthesis under the irradiation of sunlight, and under the action of chlorophyll and enzymes, the carbon dioxide and water obtained from the surrounding environment are synthesized into energy-rich organic compounds, namely sugars and proteins, and oxygen is released at the same time. Pine trees form sugars through photosynthesis, and then through a complex biochemical reaction, through a series of intermediate products, pine resin is formed in xylem secretory cells. Pine resin is infiltrated by secretory cells through the cell wall into the resin tract, and when the resin tract is cut when it is filled with pine resin, the resin flows out of the incision of the resin tract.

Due to the expansion of secretory cells, the resin opening shrinks, the flow of pine resin decreases, and the turpentine in the pine resin volatilizes, resulting in the dry solidification of pine resin, blocking the resin opening, and the pine resin stops flowing out. The secretory cells begin to form new pine resin and refill the resin tracts. When the resin channel is cut again, the pine resin flows out again, and the pine resin is harvested rhythmically and so on, which is the reason why the pine tree can continue to produce fat.

The roots, stems and leaves of the pine tree are densely packed with many small pipes, which are the intercellular spaces of the pine tree. The sugars formed and formed by photosynthesis in the pine needles are then subjected to complex biochemical changes to form pine resin in the parenchyma cells of the wood, which penetrates into the resin tracts through the lipid cell wall. The resin tract is a structure unique to the pine tree, forming three separate systems in the xylem, conifer, and primary cortex.

There are two types of resin channels in the xylem, longitudinal and transverse, which communicate with each other in the wood to form a resin channel. When harvesting pine resin, as long as the xylem of the outer edge of the trunk is cut, the pine resin will flow out through the resin system. Pine resin is mainly composed of resin acids and terpene hydrocarbons, in addition to containing small amounts of impurities and moisture.

The content of resin acids and terpenes varies depending on the species, the place of origin, the method of resin harvesting, and the storage period. Masson pine resin generally contains about 75 resin acids and 20 terpene hydrocarbons, and the rest is moisture and impurities. There are two types of resin acids in pine resin:

Abietic acid, including abietic acid, L-sea pine acid, longifoliic acid, neoabietic acid, and dehydroabietic acid, is the main part of resin acid. Maritime pine acidic acids, including sea pine acid, isosea pine acid. Masson pine resin contains more L-sea pine acid, but in the process of processing, it is heated to form other abietic acid, so rosin basically does not contain L-sea pine acid, and contains more other abie acid, especially abietic acid.

Pinus sinensis contains dicarboxyl resin acids. The terpene hydrocarbons in pine resin are mainly a-pinene and -pinene. The contents of the two varied greatly with the species and region.

In addition, there are -phellylene, camphene, geranidene, prene, longphyllene, caryophyllene, etc. China's pine resin contains very little carbonene. <>

Oleoresin coming out of the pine tree after cutting it. The product of the physiological activity of trees, which is mainly composed of terpene compounds. Freshly effluent pine resin is a colorless and transparent oily liquid that thickens with the gradual volatilization of terpene hydrocarbons after exposure to air, and finally becomes a white or yellow solid substance of hairy rosin.

Pine resin is the raw material for the manufacture of rosin and turpentine.

Pine resin is a light yellow or dark brown liquid, which can be used for iron, mild steel, copper or aluminum container storage, used for washing, fabric dyeing and coatings, varnishes, oils and other solvents, and can also be used as mineral flotation agent, alcohol denaturant, antifoaming agent and wetting agent.

If pine resin is exposed to air and light for a long time, it is easy to produce resinous substances, so you can pack pine resin in iron, mild steel, copper or aluminum containers, place it in a cool and ventilated place to avoid light, seal and store, and pay attention to avoid contact with **.

Pine resin, also known as pine oil, has strong emulsifying effect, good wetness, permeability and leveling, and has the effects of dispelling wind, killing insects, draining pus, pulling out poison, building muscle, and relieving pain, as well as dissolving stones and relaxing airways.

Pine resin is an oleoresin in the wood of Pinus massoniana and Pinus tabuliformis or its congenera. Pinus massoniana is distributed in Shaanxi, Jiangsu, Anhui, Zhejiang, Jiangxi, Fujian, Taiwan, Henan, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan and other places. Pinus tabuliformis is distributed in Northeast China, North China, Northwest China, Henan, Shandong, Jiangsu and other places.

Gather. There are ascending and descending resin harvesting methods and chemical treatment methods. In China, the descending lipid collection method is mainly adopted.

Choose a pine tree with a diameter of 20 to 50 centimeters and make a cut in the trunk at a height of 2 meters above the ground. Before the cutting opening, the rough skin should be scraped off, but do not damage the xylem, the length of the scraping surface is 50 to 60 cm, the width is 25 to 40 cm, and the length of the scraping surface is 35 to 50 cm, the width is 1 to centimeter, and the xylem is 1 to centimeter deep.

It is advisable to harvest from 30 to 35, that is, from May to October in the south of the Yangtze River, and from June to September in North China and Northeast China.

1. What is the role of pine resin?

2. What is the function of coarse pine resin?

3. What is the main use of pine resin?

4. What is pine resin?

1.Pine spike co-fat is also known as pine oil, it has strong emulsifying effect, good wetness, permeability and leveling, and has the effects of dispelling wind, killing insects, draining pus, pulling out poisonous rock beard, building muscle, and relieving pain, and also has the effect of dissolving stones and airway relaxation.

Uses of Pine Resin:

1. Clean the soldering iron tip when using the electric soldering iron.

2. If you use charcoal and carbon sticks to paint your paintings, you will use a certain proportion of rosin mixed with alcohol to spray on the painting for setting liquid.

3. People who play the violin will often rub the strings with rosin when they are playing the erhu.

4. If the naturally dripping pine sap happens to wrap a small insect and bury it in the ground, it will form amber after a hundred years, and now it can also be artificially made.

5. In the shipyard, before the newly built hull is launched, rosin and butter are laid below, when the ship is launched, the rosin will be crushed, and the lubrication of the butter will slide into the water, the rosin is to prevent the hull from directly rubbing the support, like a ball, but it is crushed when the flow is matched with Zen repentance, so it can ensure that the hull is not damaged.

6. In the soap industry, rosin is steamed with soda ash or caustic soda to form rosin soap.

7. Rosin is used as a papermaking rubber in the paper industry.

8. Rosin is soluble in various organic solvents, and it is easy to form a film and is shiny, which is one of the basic raw materials for paints and coatings.

9. Rosin is mainly used as a color carrier in printing inks, and enhances the adhesion of ink to paper.