采用原位拉伸扫描电镜试验，对高能硝酸酯增塑聚醚（NEPE）推进剂/衬层/绝热层的拉伸破坏过程进行了原位观测。通过标记点的方法，定量获得了NEPE推进剂、衬层和绝热层的变形。结果表明：在NEPE推进剂/端羟基聚丁二烯（HTPB）衬层界面处存在厚约40 μm的高模量层，该高模量层对于NEPE推进剂/衬层界面的黏结性能有重要作用。原位拉伸试验有助于了解界面区的黏结状态，可为配方改进和老化性能研究提供支撑。

By means of in-situ scanning electron microscopy tests, the process of tensile fracture of nitrate ester plasticized polyether (NEPE) propellant/lining layer/heat insulating layer was observed and measured in situ. By the marker point displacement processing technology, quantitative strain of NEPE propellant, lining layer and heat insulating layer was gained. The results show that:the high modulus layer (thickness 40 μm) lied on the interface of NEPE propellant and hydroxyl-terminated polybutadiene (HTPB), which was important to adhesive property of the interface of NEPE propellant and lining layer. In-situ tensile tests were helpful to learn the adhesive condition of the interface and could provide support for formula improvement and aging property research.