GAP推进剂/衬层粘接界面研究进展OA

The material characteristics of glycidyl azide polymer(GAP)propellants and their hydroxyl-terminated polybuta-diene(HTPB)liner adhesives were reviewed,their blending and curing behavior as well as interfacial chemical reaction behav-ior were analyzed,the factors leading to interfacial debonding,and concludes the recent research progress in curing reaction regulation,migration-resistant modification of the liner,and interfacial performance control:in terms of binder system optimi-zation were summarized,From the optimization of binder system aspect,the green synthesis of GAP,the regulation of branched architectures,and non-isocyanate curing pathways have effectively improved the mechanical properties and processing stability of the propellant.In terms of component migration suppression,the introduction of nanofillers significantly enhances the migration resistance of the liner by lengthening the diffusion path.Future efforts should strengthen investigations on the molecu-lar structure design of binders,the multi-field coupling failure mechanisms involving stress-migration-aging,as well as the char-acterization of interfacial behavior.Such endeavors are essential to provide theoretical and technical support for the construc-tion of high-stable and reliable GAP propellant/liner interfaces.105 references were attached.