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One easily understood definition of a rubber or elastomers is a material which at room temperature can be stretched repeatedly to at least twice its original length and upon immediate release of the stress, will return with force to approximately its original length. This article looks at the different types of rubber, both natural and synthetic. “a material that can be stretched to at least twice its original length and will retract rapidly and forcibly to substantially its original dimensions upon release of the force.” where?

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Rubber will not corrode and normally requires no lubrication. Rubber has been in use for thousands of years in its natural form, but most types of modern rubber are synthetic, created from different polymers manufactured from petroleum byproducts Structure characterization in the science and technology of elastomers

The molecular basis of rubberlike elasticity

The viscoelastic behavior of rubber and dynamics of blends Rheological behavior and processing of unvulcanized rubber Reinforcement of elastomers by particulate fillers