Nature's marvelous and infinite is always beyond our imagination, each plant from the beginning of the growth has been used by people to make the best use of it, there are a lot of modern society and life in the common items are extracted from plants, natural rubber is extracted from plants. Natural rubber is widely used in human life. So, what is natural rubber? Its functional use in where and how much the market price? Below, by the editor in the following for you to introduce natural rubber.
Introduction of natural rubber
Often what we call natural rubber, refers to the natural latex collected from the Brazilian rubber tree, after solidification, drying and other processing procedures and made of elastic solids. Natural rubber is a cis-1,4-polyisoprene as the main component of the natural polymer compounds, the rubber hydrocarbon (cis-1,4-polyisoprene) content of more than 90%, but also contains a small amount of proteins, fatty acids, sugars and ash, etc..
Main uses of natural rubber
Because of a series of physical and chemical properties of natural rubber, especially its excellent resilience, insulation, water insulation and plasticity and other characteristics, and, after appropriate treatment also has oil resistance, acid resistance, alkali resistance, heat resistance, cold resistance, pressure resistance, abrasion resistance, etc. Valuable properties, so there is a wide range of Therefore, it has a wide range of uses. For example, daily life in the use of rain shoes, warm water bags, elastic bands; medical and health care industry used by the surgeon's gloves, blood vessels; transportation on the use of a variety of tires; industrial use of conveyor belts, conveyor belts, acid and alkali gloves; agricultural use of irrigation hoses, ammonia bags; meteorological measurements of the sounding balloon; scientific experiments with the sealing, anti-vibration equipment; national defense use of airplanes, tanks, artillery
Natural rubber properties
(1) the chemical properties of natural rubber. Natural rubber is unsaturated rubber, easy to vulcanize with the vulcanizing agent (structuring reaction), bromine and oxygen, ozone oxidation, cracking reaction, and halogen chlorination, chemical reaction, chemical reaction under the action of catalysts and acids and so on.
(2) Natural rubber has excellent comprehensive physical and mechanical properties. Natural rubber has good elasticity at room temperature. This is due to the natural rubber molecular chain at room temperature is amorphous state, the molecular chain flexibility is good. Its density is 0.913g/cm, the modulus of elasticity is 2-4MPa, about one-third of steel, while the elongation is 300 times that of steel, up to 1000%. In the range of 0-100 degrees, the resilience of natural rubber can reach more than 50%-85%.
(3) heat aging natural rubber at room temperature for the high elastomer, glass transition temperature of -72 degrees, slowly softened by heat, 130-140 degrees in the beginning of the flow, about 200 degrees began to decompose, 270 degrees violent decomposition.
(4) media resistance. Medium refers to oil, liquid chemicals and so on. Natural rubber is not resistant to cyclohexane, gasoline, benzene and other media, insoluble in polar acetone, ethanol, etc., insoluble in water, resistant to 10% hydrofluoric acid, 20% hydrochloric acid, 30% sulfuric acid, 50% sodium hydroxide, etc.. It is not resistant to concentrated strong acid and oxidizing potassium permanganate and potassium bicarbonate.
(5) good processing performance. Natural rubber due to the high relative molecular mass, quite a wide distribution of molecular mass, the molecular chain is easy to break, coupled with the presence of a certain number of gel molecules in the raw rubber, so it is easy to plasticizing, mixing, calendering, pressing out, molding, etc..
Latest natural rubber market price
The current market price of natural rubber is 10,300 yuan per ton. (Prices from the network, for reference only)
The above is the editor of the natural rubber in the functional characteristics as well as the market offer and other aspects for you to do the relevant introduction. Each part of the plant is a treasure, each part has a great benefit. Through the above introduction, we can see that the use of natural rubber performance is very large, in real life has a very wide range of uses, coupled with a suitable price, overall, the natural rubber cost-effective is very high, if there is a need for friends can be purchased.
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