防老剂H对丁羟推进剂粘合剂体系形态结构和力学性能的影响

EFFECT OF ANTIOXIDANT H ON MORPHOLOGICAL STRUCTURE AND MECHANICAL PROPERTIES OF HTPB PROPELLANT BINDERS

关键词:  端羟基聚丁二烯推进剂  推进剂粘合剂  推进剂防老剂  形态结构~+  力学性能

Key words:  Hydroxy terminated polybutadiene propellant  Propellant binder  Propellant antioxidant  Morphological structure  Mechanical perfomance

摘要:

运用透射电镜（TEM）和动态力学分析（DMA）研究了丁羟推进剂粘合剂体系的形态结构,发现在该体系中存在硬段、软段两相分离结构；防老剂H（N,N’-二苯基对苯二胺）的加入,引入了更多的硬段微区,使两相结构更为清晰；解释了防老剂H能大幅度提高粘合剂体系力学性能的原因。

Abstract:

The morphological structures of HTPB propellant binders have been studied bytransmission electron microscopy (TEM ) and dynamic mechanical analysis (DMA). It is found thatthere are microphase segregation structures of hard and soft segments in the binders. Harder segmentdomains are brought in binders by adding antioxidant H (N, N’-diphenyl-p-phenylene dlamine)andthe microphase segregation structures become clearer. We have explained the reason that antioxidantH can greatly improve mechanical properties of HTPB propellant binders.