关键词: 端羟基聚丁二烯推进剂;固体火箭推进剂粘合剂;推进剂防老剂;低温力学性能

Abstract: The effect of antioxidant H(N,N′ diphenyl p phenylene diamine)on low temperature mechanical performance of IPDI type HTPB propellants(including HTPB/AP/Al propellant with moderate and high burning rate and HTPB/AP/HMX/Al propellant)has been investigated.Keeping constant tensile strenth at room temperature,with the increase of antioxidant H the tensile strenth σ m is increased and the elongation ε m is decreased at low temerature for IPDI propellants.The phenomenon is attributed to tensile dewetting of the propellants,which is resulted from the increase of hard segment domain type physical crosslinks in binder matrix with the adding and increasing of antioxidant H in the propellants

Key words: Hydroxyl terminated polybutadiene propellant;Solid rocket propellant binder;Propellant antioxidant;Performance of low temperature mechanics