固体火箭技术2026，Vol.49Issue(2)：275-282,8.DOI:10.7673/j.issn.1006-2793.2026.02.012
环氧化端羟基聚丁二烯在衬层中的应用及其对衬层性能影响
Application on epoxidized hydroxyl terminated polybutadiene in liner and its effect on liner properties
摘要
Abstract
To investigate the application of epoxidized hydroxyl-terminated polybutadiene(EHTPB)in the liner of solid rocket motors and its effect on properties of liner,experimental characterization and molecular simulation were combined to systematically evaluate the mechanical properties,curing behavior,interfacial adhesion performance,and nitrate migration resistance of EHTPB-based liners.The results indicate that replacing hydroxyl-terminated polybutadiene(HTPB)with EHTPB effectively reduces the curing reaction activation energy,accelerates the curing rate,and enhances the intrinsic mechanical strength of the liner.The EHTPB liner exhibits good interfacial adhesion with NEPE propellant,showing tensile and peel strengths of 1.14 MPa and 2.45 N·mm-1,respectively.However,nitrate migration tests and molecular dynamics simulations reveal that the nitrate migration resistance of EHTPB liners decreases,with the migrated contents of NG and BTTN increasing to 2.99%and 2.46%,respectively.The introduction of epoxy groups improves the reactivity with isocyanates,while simultaneously increasing the diffusion coefficient of nitrate esters in the liner.关键词
固体火箭发动机/衬层/环氧化端羟基聚丁二烯/界面粘接/分子模拟/分子动力学模拟Key words
solid rocket motor/liner/EHTPB/interface bonding/molecular simulation/molecular dynamics simulation分类
航空航天引用本文复制引用
袁野,王玉,梁夏敏,李悦,李东峰,刘性辉,冯锐..环氧化端羟基聚丁二烯在衬层中的应用及其对衬层性能影响[J].固体火箭技术,2026,49(2):275-282,8.基金项目
湖北省自然科学基金联合基金项目(2025AFD130) （2025AFD130）
钱学森青年创新基金项目(QXSCXJJ2023020). （QXSCXJJ2023020）
