HTPE/PCL四组元推进剂药浆的流变性能  

Rheological Properties of HTPE/PCL Four-component Propellant Slurry

作　　者：袁申 赵越 罗运军[1,2] YUAN Shen;ZHAO Yue;LUO Yun-jun(School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;Key Laboratory for Ministry of Education of High Energy Density Materials, Beijing 100081, China)

机构地区：[1]北京理工大学材料学院,北京100081 [2]高能量密度材料教育部重点实验室,北京100081

出　　处：《火炸药学报》2021年第3期301-307,共7页Chinese Journal of Explosives & Propellants

摘　　要：为研究聚ε-己内酯(PCL)加至推进剂配方后的流变特性,采用流变测试仪对比了HTPE和HTPE/PCL四组元推进剂药浆在不同温度及剪切速率下的流变性能,并优化工艺参数。结果表明,HTPE和HTPE/PCL推进剂药浆的剪切应力与剪切速率呈指数增长,表观黏度呈假塑性流体剪切变稀的流动特性;温度升高能降低药浆的剪切应力、表观黏度及黏度系数,增加剪切速率指数;HTPE/PCL推进剂药浆的流动活化能为3.90×104kJ/mol,略高于HTPE推进剂药浆(2.75×104kJ/mol)。引入PCL对推进剂药浆工艺性能无明显影响,HTPE/PCL推进剂药浆较佳的工艺温度为50~60℃,适用期为270~329min。To study the rheological behaviors after introducing polyε-caprolactone(PCL)to the propellant formulation,the rheometer was used to compare the rheological properties of HTPE and HTPE/PCL four-component propellant slurries under different temperatures and shear rates,and the process parameters were optimized.The results show that the shear stress and shear rate of HTPE and HTPE/PCL propellant slurries increase exponentially,and their apparent viscosities present pseudoplastic fluid with shear thinning.Increasing temperature can reduce the shear stress,apparent viscosity and viscosity coefficient,while increase the shear rate index.The flow activation energy of HTPE/PCL propellant slurry is 3.90×104kJ/mol,which is a bit higher than that of HTPE(2.75×104kJ/mol).The introduction of PCL has no significant effect on the process performance of HTPE/PCL propellant slurry,the best process temperature is 50-60℃,and the pot life is 270-329min.

关 键 词：宽温域 HTPE/PCL推进剂 流变性能 聚Ε-己内酯 PCL 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]