GO/HTPB composite liner for anti-migration of small molecules  

作　　者：Hao Li Jie Wei Ya-nan Zhang Yu-bing Hu Wei Jiang Teng-yue Zhang 

机构地区：[1]College of Materials Science and Engineering,Nanjing Tech University,Nanjing,211816,China [2]National Special Superfine Powder Engineering Research Center of China,Nanjing University of Science and Technology,Nanjing,210014,China [3]Key Laboratory of Special Energy Materials,Nanjing University of Science and Technology,Ministry of Education,Nanjing,210094,China [4]China Research and Development Academy of Machinery Equipment,Beijing,100089,China

出　　处：《Defence Technology（防务技术）》2023年第4期156-165,共10页Defence Technology

基　　金：the financial support of the National Natural Science Foundation of China(grant number 22005145);the Natural Science Foundation of Jiangsu Province(grant number BK20180495,BK20180698);the Opening Project of Key Laboratory of Special Energy Materials(Nanjing University of Science and Technology);the Fundamental Research Funds for the Priority Academic Program Development of Jiangsu Higher Education Institutions(grant number 30919011404)。

摘　　要：Hydroxyl-terminated polybutadiene/toluene diisocyanate(HTPB/TDI)system is widely used in composite solid propellants.The migrations of plasticizers and water molecules from solid propellants and surrounding environment to the inhibitor have always been the important issues.This study focuses on the preparation,characterization and anti-migration behavior of graphene oxide(GO)/HTPB nanocomposite liner.The GO/HTPB(GH)composite liners affect the migration of small molecules through a tighter cross-linked structure and weakening function of small molecule adsorption.The anti-migration performance of the liner at different temperatures was analyzed,and the influence of the added amount of GO on the anti-migration performance and adhesion performance was also systematically studied.The overall performance of the liner is optimized when the amount of GO filler is 0.3 wt%.After adding 0.3 wt%GO,the concentration of dioctyl sebacate(DOS)migrated into the liner is decreased by 23.28%,and the concentration of water molecules is decreased by 51.89%,indicating that the introduction of GO can significantly improve the anti-migration performance of the liner.In addition,the bond strength is greatly increased from 0.25 MPa to 0.95 MPa,which meets the application requirements of the current propellant system.This research provides an important way for the preparation of structure-function synergistic anti-migration composite liners.

关 键 词：Graphene oxide LINER STRUCTURE-FUNCTION Anti-migration Bonding 

分 类 号：V25[一般工业技术—材料科学与工程]