键合剂结构对AlH_(3)推进剂流变性能和力学性能的影响  

Effect of bonding agent structure on rheological and mechanical performance of AlH_(3)propellant

作　　者：菅晓霞[1] 谢五喜[2] 张亮亮 李雅津 安琦 张翔[1] Jian Xiaoxia;Xie Wuxi;Zhang Liangliang;Li Yajin;An Qi;Zhang Xiang(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Xi’an Modern Chemistry Research Institute,Xi’an 710065,China;Liaoning North Huafeng Special Chemical Co.,Ltd.,Fushun 113003,China)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094 [2]西安近代化学研究所,陕西西安710065 [3]辽宁北方华丰特种化工有限公司,辽宁抚顺113003

出　　处：《化学推进剂与高分子材料》2024年第6期39-43,55,共6页Chemical Propellants & Polymeric Materials

摘　　要：针对三氢化铝(AlH_(3))在固体推进剂中的应用问题,采用自制和市售的不同结构键合剂对其进行表面处理,并浇注制备了AlH_(3)基固体推进剂。对比了不同键合剂对推进剂的流变性能、力学性能、热性能和断面形貌等的影响。结果表明:自制聚多巴胺键合剂使推进剂浇注浆料的黏度增大,却提高了推进剂的力学性能,拉伸强度从0.62 MPa提高到1.87 MPa,断裂伸长率从17.50%提高到18.56%;自制聚氨酯键合剂显著降低了推进剂浇注浆料的黏度,在20 s^(–1)的剪切速率下,黏度从0.68 Pa·s降到0.002 Pa·s,而推进剂的拉伸强度保持在0.45 MPa,断裂伸长率保持在43.99%。In response to the application problems of aluminum trihydride(AlH_(3))in solid propellants,AlH_(3)-based solid propellants were prepared by surface treatment with self-made and commercially available bonding agents with different structure and then casting.The effects of different bonding agents on the rheological performance,mechanical performance,thermal performance and fraction morphology of the propellants were compared.The results showed that the self-made polydopamine bonding agent increased the viscosity of the propellant casting slurry,but improved the mechanical performance of the propellant.The tensile strength increased from 0.62 MPa to 1.87 MPa,and the elongation at break increased from 17.50%to 18.56%.The self-made polyurethane bonding agent significantly reduced the viscosity of the propellant casting slurry.Under the shear rate of 20 s^(–1),the viscosity decreased from 0.68 Pa·s to 0.002 Pa·s,while the tensile strength of the propellant still remained at 0.45 MPa,and the elongation at break remained at 43.99%.

关 键 词：三氢化铝 键合剂 流变性能 力学性能 推进剂 

分 类 号：V512.3[航空宇航科学与技术—航空宇航推进理论与工程]