固体火箭技术2026，Vol.49Issue(2)：267-274,8.DOI:10.7673/j.issn.1006-2793.2026.02.011
硝化端羟基聚丁二烯的制备及性能
Synthesis and properties of nitro-HTPB
常亚丽 1袁剑民 2邓剑如 1张平安1
作者信息
- 1. 湖南大学 化学化工学院,长沙 410082
- 2. 湖南大学 材料科学与工程学院,长沙 410082
- 折叠
摘要
Abstract
To enhance the energy density of hydroxyl-terminated polybutadiene(HTPB)propellants,a series of nitro-functionalized HTPB(NHTPB)binders were synthesized via I2-Na2O2-mediated nitration of HTPB.The chemical structures of the products were characterized by FT-IR and 1H NMR spectroscopy.Physicochemical properties including nitration degree,viscosity,hydroxyl value,molecular weight distribution,and glass transition temperature(Tg)were then determined.Furthermore,the compatibility of NHTPB with energetic plasticizers was evaluated,while the mechanical and combustion properties of NHTPB-based elastomers were also investigated.The results show that the NHTPB elastomer with a 7.5%nitration degree exhibits excellent mechanical properties,achieving a tensile strength of 1.88 MPa and an elongation at break of 690.6%.Meanwhile,its energy characteristics are significantly improved,combustion heat is increased by 60%and the burning rate at 0.1 MPa is doubled compared with HTPB elastomer.Moreover,NHTPB exhibits good compatibility with Bu-NENA,laying the foundation for its subsequent application in HTPB propellants.关键词
硝化端羟基聚丁二烯(NHTPB)/力学性能/燃烧特性/含能增塑剂/相容性Key words
nitro-hydroxyl-terminated polybutadiene(NHTPB)/mechanical properties/combustion performance/energetic plasticizer/compatibility分类
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常亚丽,袁剑民,邓剑如,张平安..硝化端羟基聚丁二烯的制备及性能[J].固体火箭技术,2026,49(2):267-274,8.
