The caoutchouc

Word caoutchouc comes from the Indian word "caou" - tree and "tchouc" - cry. Notched bark of the tree Hevea, the Indians of South America made it "cry" and collected effluent juice - latex when heated latex smallest contained therein resin beads combined and precipitated. Washing the precipitate and maintaining it over the fire, the Indians received caoutchouc pieces. The caoutchouc opened de la Condamine in Quito (Ecuador) in 1751, while in Europe the caoutchouc became known only in the early 19th century. In England started to make raincoats and galoshes soaked in oil paint caoutchouc, but such products are not widely used - they cracked in the cold, the summer is softened and stuck to the body. I had to make a caoutchouc that would preserve the elasticity and strength at different temperatures.

Caoutchouc opened de la Condamine in Quito (Ecuador) in 1751, while in Europe the caoutchouc became known only in the early 19th century

Thousands of experiments were put by the American C. Goodyear, he mixed caoutchouc with various substances. And in 1839 he accidentally dropped a piece of Caoutchouc, mixed with sulfur, on a hot plate. The piece was charred, but in the middle of it a strip of unusual material brightened, which turned out to possess all the desirable properties: strength, elasticity and others. So for the first time, rubber was obtained. The process of obtaining rubber by heating caoutchouc with sulfur was called vulcanization.

In raw form apply no more than 1% of extracted natural caoutchouc (caoutchouc glue). More than 60% of natural caoutchouc is used for making automobile tires. Made of caoutchouc special rubber seals huge variety of purposes for thermal, acoustic, airtight and waterproof detachable elements of buildings, sanitary and ventilation engineering, hydraulic, pneumatic and vacuum technology. The rocket engineering synthetic caoutchoucs are used as the polymer base in the manufacture of solid rocket fuel, in which they play the role of the fuel, and as a filler used nitrate powder (ammonium or potassium) or ammonium perchlorate, the fuel which plays the role of an oxidant. On an industrial scale, natural caoutchouc is produced in Indonesia, Malaysia, Vietnam and Thailand.

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