摘要
以挤出沉积技术为核心、针对发射药黏度高、不能高温加热的性质,设计了发射药挤出沉积快速成型系统,并搭建了完整样机。以硝化棉为主的某ZY发射药为原料,制备出27.3%、33.3%、38.5%、42.9%、46.7%、50%等不同浓度物料,通过3D打印挤出实验,发现针头内径与物料浓度之间存在多项式函数关系,确定了填充速度范围为2~4 mm·s^(-1)、填充率范围为70%~90%、底板温度范围为25~45℃;在此基础上,使用发射药3D打印机打印发射药,并进行压缩实验,结果表明发射药压缩强度最高可达为230 MPa。
With extrusion deposition technology as the core,based on the features of high viscosity and no‑resistant to high tem‑perature for propellant,the extrusion deposition rapid prototyping system for propellant was designed and a complete prototype was built.Using a certain ZY propellant as raw material,different materials with concentrations of 27.3%,33.3%,38.5%,42.9%,46.7%and 50%were prepared.Through 3D printing extrusion experiments,it is found that there is a polynomial function relationship between the inner diameter of the needle and the material concentration.The filling speed range is 2-4 mm·s^(-1),the filling rate range is 70%-90%,and the temperature range of the bottom plate is 25-45℃.On this basis,the propellant 3D printer was used to print the propellant,and the compression test was carried out.The results showed that the compression strength of the propellant could reach up to 230 MPa.
作者
周梦蕾
南风强
何卫东
王沫茹
ZHOU Meng-lei;NAN Feng-qiang;HE Wei-dong;WANG Mo-ru(School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2021年第6期530-534,I0008,共6页
Chinese Journal of Energetic Materials
关键词
挤出沉积
发射药
3D打印
extrusion deposition
propellant
3D printing
