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Natural rubber aging.

Natural rubber aging. This report presents information on a recently completed comprehensive natural aging and physical testing program on 19 rubber compounds, stored in controlled conditions for a period of 40 years. Rubbers studied include natural rubber, styrene butadiene rubber, butyl rubber, polychloroprene, nitrile rubber, acrylate rubber, chlorosulfonated polyethylene, polysulfide rubber and silicone rubber. Samples were stored under temperate and tropic climatic conditions, and at various intervals properties were measured, including hardness, volume change, resilience, volume and surface resistivity, tensile strength, elongation at break, modulus at 100% and 300% elongation, long and short term compression set, and low temperature stiffness. (Rapra Technology Ltd.)

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Publication:Rubber World
Date:May 1, 2000
Words:107
Previous Article:Processing of Composites.
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