表面脉冲激光处理对三元乙丙绝热层粘接性能的影响研究

打开文本图片集

中图分类号：TQ437+.4 文献标志码：A文章编号：1001-5922（2026）1-0001-04

Abstract：To enhance the interfacial bonding strength between the thermal insulation layer andthe liner，surface treatment methods such as grinding and sandblasting are commonly adopted.However，the degree of such surface treatment is highlysusceptible to human intervention，and itcannotbe separated from manual operations to forman intellgentandautomatedprocess，whichpresentscertain limitations.Asaneficient，uniform，andstablesurface treatment method，laser treatment can providea brand-newsolutionfor thesurface treatmentof thermal insulation layers.Ontheone hand，itcan achieveuniform and stable modification of thesurface morphology of the thermal insulationlayerby controlling the laser powerand treatment duration，ssentiallyimproving the consistencyof surface microstructures （such as protrusions，pits，grooves，porous structures，or periodic structures）and the stability of bonding strength.On the other hand，itcan reduce the content of hydroxyl and silanol groups onthe surface of the thermal insulation layer，thereby mitigating their adverse effects on the isocyanate curing agent in the liner curing systemandenhancing thecuring eficiencyand stabilityof the liner.Inthisstudy，the effects of pulsedlaser treatment on the surface micromorphology and bonding strength ofthe thermal insulation layer were analyzed using techniques including scanning electron microscopy（SEM），Fourier transform infrared spectroscopy（FT-IR），and peel strength testing.The results showed that when the black ethylene propylene diene monomer （EPDM）thermal insulation layer J2 was treated with a laser power of $2 0 0 ～ ＼mathrm { ＼textW }$ and a scanning spacing of 100μm ，it achieved the optimal bonding effect with the typical hydroxyl-terminated polybutadiene（HTPB）liner，with anaveragepeel strength reaching 3.02N/mm

Key Words ： Insulation layer; lining layer;pulsed laser ; microstructure ;peeling strength

固体火箭发动机的装药燃烧室是发动机的关键组成部件之一，负责将推进剂中的化学能通过燃烧转换为发动机的推力，是固体火箭发动机的动力源。（剩余5397字）