A brand new green coating technology for realizing the regulation of spherical propellant energy release process  

作　　者：Wenhao Fan Yajun Ding Zhongliang Xiao 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [2]Key Laboratory of Special Energy Materials,Nanjing University of Science and Technology,Ministry of Education,Nanjing 210094,China

出　　处：《Defence Technology（防务技术）》2024年第6期78-94,共17页Defence Technology

基　　金：supported by the National Natural Science Foundation of China (Grant No.22005143);Young Elite Scientists Sponsorship Program by CAST (Grant No.2022QNRC001)。

摘　　要：To achieve the controllable release of energy of nitrocellulose-based propellants,this paper combines the cellulose-based nanocomposites aqueous coating(Surelease®-NC)with fluidized bed coating equipment to successfully prepare the coated spherical propellant for the first time.The effects of fluidized bed coating temperature,air velocity,flow speed and atomization pressure on the adhesion rate,coating integrity and coating uniformity of the coated spherical propellant were investigated,and the preparation of coated spherical propellant with homogeneous size and structural integrity was achieved for the first time.The microscopic morphology,chemical structure,water vapor adsorption behavior,combustion performance,and ageing resistance property of the coated spherical propellant were systematically investigated by,Fourier transforms infrared spectroscopy(FTIR),Micro confocal raman spectrometer,field scanning electron microscopy(SEM),dynamic vapor adsorption techniques,and closed bomb test,confirming the surface core-shell structure and the tightly bonded interfacial structure of coated spherical propellant.Meanwhile,the coated spherical propellant has good hygroscopic,excellent progressive burning and long storage stability.

关 键 词：Nanocomposites aqueous coating Fluidized bed coating equipment Coated spherical propellant Controllable release of energy Long storage stability 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]