采用原位拉伸扫描电镜观测不同温度下NEPE推进剂/衬层粘接界面裂纹扩展规律,得出不同温度下裂纹产生位置均出现在推进剂和衬层连接处,且裂纹的扩展存在相互竞争关系；粘接性能较好时,粘接界面的好坏主要取决于推进剂/衬层界面附近推进剂性能.重点考察了会引起推进剂“脱湿”的HMX界面,利用纳米压痕仪及动态力学实验,得出当推进剂中含NPBA时,HMX周围存在一高模量层,且该高模量层的动态储能模量与温度呈反向关系.该高模量层的存在或消失会引起推进剂在宏观性能上发生变化,进而影响推进剂/衬层试件宏观力学性能.%In-situ observations in scanning electron microscope were employed to study the tensile fracture behavior of the NEPE solid propellant/liner interface at differente temperature. It was found that the fracture start developing from the joint of propellant and underlayer. and the fracture spread exist competition connection one another; finally, the adhesive capability stand or fail mostly lie on the propellant that hereabout the propellant /liner interface when interface is well. Review the interface of HMX which bring dewetting of propellant, the results showed that there is high modulus layer around HMX when propellant contain NPBA by nano-impress and dynamic experiment, and the dynamic storage modulus of high modulus layer attend temperature assume reverse inverse relation. This high modulus layer existence or disappear can introduce propellants change of macro performance, more effect macro mechanics performance of propellant/underlayer adhesives sample.
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