Life of Ship Flexhose
To develop concepts for affordable flexhoses that meet the Navy military specification requirements for MIL-H-24135B and that last the average life of a ship (40 years), Phase I will (a) apply a"useful lifetime estimation"experimental method to characterize existing MIL-H-24135B hose compounds; (b) design candidate new compounds formulated to be cost-comparable and performance-improved relative to current compounds; (c) validate cost/performance of new compounds via testing of key properties, e.g, compression set, abrasion, and UV/sunlight weatherability. The"useful lifetime estimation"method has been previously successfully applied to EPDM and nitrile rubber (NBR) motor mounts. The candidate new compounds are based on recent publications presenting advances in blends of EPDM and nitrile, as well as blends of NBR and HNBR (hydrogenated nitrile rubber).
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