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Vulcanized rubber and its application
Editor:Zoe  Post Time:2012-09-11  Click:

Before vulcanization was discovered, natural rubber could be coagulated with acid and made malleable so that it could be shaped and formed. At high temperatures, though, the rubber would become sticky or melt. At low temperatures, the rubber would become brittle. These qualities made this type of rubber impractical to use in industrial settings.

Vulcanized rubber has come to be used to make a wide variety of products. Among the most common of these are automobile tires, rubber seals and gaskets, transmission belts, shoe soles and hockey pucks. The Goodyear Tire and Rubber Company, a well-known manufacturer of automobile tires and other rubber products, was named in honor of Charles Goodyear, although there are no family connections.

Vulcanized rubber is a natural elastomer that has been made more durable by a biochemical process that cures the rubber. During  vulcanization, the milky latex from a rubber tree is combined with a curing ingredient — usually sulfur — and heated under pressure.  vulcanization chemically combines the rubber and sulfur. At high pressure and high temperatures, the sulfur atoms form links or bridges between long chains of the rubber molecules. This increases the rubber's strength and durability and reduces its stickiness. It also makes the rubber retain its elasticity at a much wider range of temperatures, making vulcanized rubber more useful for many purposes.

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