New polymer to endure volatile decompression and harsh chemical environment

LANXESS has developed a new polymer THERBAN® XT HXNBR which is characterized by increased tear strength, abrasion resistance, high tensile strength and high elongation at high temperatures. The polymer is ideal for use in explosive decompression and harsh chemical environments such as in oil well drilling applications. With its excellent adhesion to metals, plastics, natural and synthetic fibers, it is beneficial for high performance belts. LANXESS uses a highly selective catalyst to create the new polymer that hydrogenates only the carbon-carbon double bonds of a carboxylated nitrile rubber (XNBR). This highly controlled process preserves both the functionality and the random distribution of the XNBR carboxyl moieties and can be crosslinked by either peroxide or sulphur cure systems. The polymer's high tear strength at high temperature makes it perfect for use in rubber components for tough engineering applications while the high abrasion resistance of THERBAN® XT polymer makes it useful for rubber rolls, shaft seals, and track pads. The blending of THERBAN® XT polymer with regular THERBAN® HNBR in the presence of ZDA (Zinc Diacrylate) in a peroxide cured compound increases the mechanical properties, adhesion, and Pico abrasion resistance while maintaining very good low temperature performance.
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